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7b46cf5620
mingw-binutils/0200-remove-provide-qualifiers.patch
Sandro Mani 7b46cf5620 Rebase patch
2018-06-14 16:31:47 +02:00

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diff -rupN binutils-2.30/ld/ChangeLog binutils-2.30-new/ld/ChangeLog
--- binutils-2.30/ld/ChangeLog 2018-01-27 16:08:54.000000000 +0100
+++ binutils-2.30-new/ld/ChangeLog 2018-06-14 16:31:29.314219791 +0200
@@ -1,3 +1,17 @@
+2018-02-05 Nick Clifton <nickc@redhat.com>
+
+ Import from mainline:
+
+ 2018-02-03 Nick Clifton <nickc@redhat.com>
+
+ PR 22762
+ * scripttempl/pe.sc: Remove PROVIDE()s from __CTOR_LIST__ and
+ __DTOR_LIST__ symbols. Add a comment explaining why this is
+ necessary.
+ * scripttemp/pep.sc: Likewise.
+ * ld.texinfo (PROVIDE): Add a note about the effect of common
+ symbols.
+
2018-01-27 Nick Clifton <nickc@redhat.com>
This is the 2.30 release:
diff -rupN binutils-2.30/ld/ChangeLog.orig binutils-2.30-new/ld/ChangeLog.orig
--- binutils-2.30/ld/ChangeLog.orig 2018-01-27 15:04:49.000000000 +0100
+++ binutils-2.30-new/ld/ChangeLog.orig 1970-01-01 01:00:00.000000000 +0100
@@ -1,285 +0,0 @@
-2018-01-25 Eric Botcazou <ebotcazou@adacore.com>
-
- * testsuite/ld-sparc/sparc.exp (32-bit: Helper shared library):
- Link with a version script.
- (32-bit: TLS -fpie): New test.
- (64-bit: Helper shared library): Link with a version script.
- (64-bit: TLS -fpie): New test.
- (64-bit: GOTDATA relocations): Pass -Av9 to the assembler.
- * testsuite/ld-sparc/tlslib.ver: New file.
- * testsuite/ld-sparc/tlspie32.dd: Likewise.
- * testsuite/ld-sparc/tlspie32.s: Likewise.
- * testsuite/ld-sparc/tlspie64.dd: Likewise.
- * testsuite/ld-sparc/tlspie64.s: Likewise.
- * testsuite/ld-sparc/tlssunbin32.dd: Adjust for versioned symbol.
- * testsuite/ld-sparc/tlssunbin32.rd: Likewise.
- * testsuite/ld-sparc/tlssunbin32.sd: Likewise.
- * testsuite/ld-sparc/tlssunbin64.dd: Likewise.
- * testsuite/ld-sparc/tlssunbin64.rd: Likewise.
- * testsuite/ld-sparc/tlssunbin64.sd: Likewise.
-
-2018-01-23 Nick Clifton <nickc@redhat.com>
-
- * configure: Regenerate.
-
-2018-01-20 H.J. Lu <hongjiu.lu@intel.com>
-
- PR ld/22721
- * testsuite/ld-plugin/lto.exp: Run PR ld/22721 tests.
- * testsuite/ld-plugin/pr22721.t: New file.
- * testsuite/ld-plugin/pr22721a.s: Likewise.
- * testsuite/ld-plugin/pr22721b.c: Likewise.
-
-2018-01-18 Alan Modra <amodra@gmail.com>
-
- * emultempl/ppc32elf.em: Support optional --plt-align arg.
- * emultempl/ppc64elf.em: Support negative --plt-align arg.
-
-2018-01-18 Alan Modra <amodra@gmail.com>
-
- * emultempl/ppc32elf.em (params): Init new field.
- (OPTION_SPECULATE_INDIRECT_JUMPS): Define.
- (OPTION_NO_SPECULATE_INDIRECT_JUMPS): Define.
- (PARSE_AND_LIST_LONGOPTS): Handle new options.
- (PARSE_AND_LIST_ARGS_CASES): Likewise.
- (PARSE_AND_LIST_OPTIONS): Likewise.
- * emultempl/ppc64elf.em (params): Init new field.
- (OPTION_SPECULATE_INDIRECT_JUMPS): Define.
- (OPTION_NO_SPECULATE_INDIRECT_JUMPS): Define.
- (PARSE_AND_LIST_LONGOPTS): Handle --speculate-indirect-jumps.
- (PARSE_AND_LIST_OPTIONS): Likewise.
- (PARSE_AND_LIST_ARGS_CASES): Likewise.
- * ld.texinfo (--no-plt-thread-safe): Correct itemx.
- (--speculate-indirect-jumps): Document.
- * testsuite/ld-powerpc/elfv2exe.d,
- * testsuite/ld-powerpc/elfv2so.d,
- * testsuite/ld-powerpc/relbrlt.d,
- * testsuite/ld-powerpc/powerpc.exp: Disable plt alignment and
- speculation barriers on various tests.
-
-2018-01-18 Alan Modra <amodra@gmail.com>
-
- * emultempl/ppc32elf.em (params): Init new field.
- (enum ppc32_opt): New enum to define OPTION_* values. Add
- OPTION_PLT_ALIGN and OPTION_NO_PLT_ALIGN.
- (PARSE_AND_LIST_LONGOPTS): Handle new options.
- (PARSE_AND_LIST_ARGS_CASES): Likewise.
- (PARSE_AND_LIST_OPTIONS): Likewise. Break up help output.
- * emultempl/ppc64elf.em (ppc_add_stub_section): Init alignment
- correctly for negative --plt-stub-align.
- * testsuite/ld-powerpc/elfv2exe.d,
- * testsuite/ld-powerpc/elfv2so.d,
- * testsuite/ld-powerpc/relbrlt.d,
- * testsuite/ld-powerpc/relbrlt.s,
- * testsuite/ld-powerpc/tlsexe.d,
- * testsuite/ld-powerpc/tlsexe.r,
- * testsuite/ld-powerpc/tlsexe32.d,
- * testsuite/ld-powerpc/tlsexe32.g,
- * testsuite/ld-powerpc/tlsexe32.r,
- * testsuite/ld-powerpc/tlsexetoc.d,
- * testsuite/ld-powerpc/tlsexetoc.r,
- * testsuite/ld-powerpc/tlsopt5_32.d,
- * testsuite/ld-powerpc/tlsso.d,
- * testsuite/ld-powerpc/tlstocso.d: Update for changed stub order.
-
-2018-01-16 Nick Clifton <nickc@redhat.com>
-
- * po/pt_BR.po: Updated Brazilian Portugese translation.
-
-2018-01-15 Nick Clifton <nickc@redhat.com>
-
- * po/uk.po: Updated Ukranian translation.
-
-2018-01-13 Nick Clifton <nickc@redhat.com>
-
- * po/ld.pot: Regenerate.
- * configure: Regenerate.
-
-2018-01-13 Nick Clifton <nickc@redhat.com>
-
- 2.30 branch created.
- * NEWS: Add marker for 2.30.
-
-2018-01-12 Alan Modra <amodra@gmail.com>
-
- * testsuite/ld-elf/elf.exp: xfail "pr22374 function pointer
- initialization" for currently failing targets.
-
-2018-01-12 Alan Modra <amodra@gmail.com>
-
- PR ld/22649
- * testsuite/ld-elf/pr22649.msg: Allow other messages.
- * testsuite/ld-elf/shared.exp: Check that --gc-sections is
- supported before running ld/22649 tests.
-
-2018-01-12 Nick Clifton <nickc@redhat.com>
-
- * emultempl/elf32.em (_handle_option): Add support for "-z undefs"
- as the opposite of "-z defs".
- * ld.texinfo: Document the new option. Update the description of
- the -z defs option to make it clear that it does generate an error
- if an undefined symbol reference is found in an object file whilst
- creating a shared library.
- * NEWS: Document this new feature.
-
-2018-01-11 H.J. Lu <hongjiu.lu@intel.com>
-
- * testsuite/ld-elf/pr22393-2a.rd: Replace "-z textonly" with
- "-z separate-code".
- * testsuite/ld-elf/pr22393-2b.rd: Likewise.
- * testsuite/ld-x86-64/pr22393-3a.rd: Likewise.
- * testsuite/ld-x86-64/pr22393-3b.rd: Likewise.
-
-2018-01-11 H.J. Lu <hongjiu.lu@intel.com>
-
- PR ld/22393
- * testsuite/ld-x86-64/pr22393-3a.c: New file.
- * testsuite/ld-x86-64/pr22393-3a.rd: Likewise.
- * testsuite/ld-x86-64/pr22393-3b.c: Likewise.
- * testsuite/ld-x86-64/pr22393-3b.rd: Likewise.
- * testsuite/ld-x86-64/x86-64.exp: Run tests for -z separate-code
- -z max-page-size=0x1000.
-
-2018-01-11 H.J. Lu <hongjiu.lu@intel.com>
-
- PR ld/22393
- * testsuite/ld-elf/pr16322.d: Add -z noseparate-code.
- * testsuite/ld-elf/pr22393-1.s: New file.
- * testsuite/ld-elf/pr22393-1a.d: Likewise.
- * testsuite/ld-elf/pr22393-1b.d: Likewise.
- * testsuite/ld-elf/pr22393-1c.d: Likewise.
- * testsuite/ld-elf/pr22393-1d.d: Likewise.
- * testsuite/ld-elf/pr22393-1e.d: Likewise.
- * testsuite/ld-elf/pr22393-1f.d: Likewise.
- * testsuite/ld-elf/pr22393-2a.c: Likewise.
- * testsuite/ld-elf/pr22393-2a.rd: Likewise.
- * testsuite/ld-elf/pr22393-2b.c: Likewise.
- * testsuite/ld-elf/pr22393-2b.rd: Likewise.
- * testsuite/ld-elf/shared.exp: Run tests for -z separate-code.
-
-2018-01-11 H.J. Lu <hongjiu.lu@intel.com>
-
- PR ld/22393
- * NEWS: Mention "-z separate-code".
- * emultempl/elf32.em (gld${EMULATION_NAME}_get_script): Get
- builtin linker scripts and return linker scripts from disk for
- "-z separate-code".
- (gld${EMULATION_NAME}_handle_option): Handle "-z separate-code"
- and "-z noseparate-code".
- * genscripts.sh: Generate linker scripts for "-z separate-code".
- (LD_FLAG): Set to *textonly for "-z separate-code".
- * ld.texinfo: Document "-z separate-code".
- * lexsup.c (elf_shlib_list_options): Add linker help messsages
- for "-z separate-code" and "-z noseparate-code".
- * scripttempl/elf.sc (SEPARATE_TEXT): New
- (TEXT_SEGMENT_ALIGN): Likewise.
- Use ${TEXT_SEGMENT_ALIGN} to align and pad text segment to
- ${MAXPAGESIZE}.
-
-2018-01-11 H.J. Lu <hongjiu.lu@intel.com>
-
- PR ld/22649
- * testsuite/ld-elf/pr22649-1.s: New file.
- * testsuite/ld-elf/pr22649-2a.s: Likewise.
- * testsuite/ld-elf/pr22649-2b.s: Likewise.
- * testsuite/ld-elf/pr22649.msg: Likewise.
- * testsuite/ld-elf/shared.exp: Run ld/22649 tests.
-
-2018-01-11 H.J. Lu <hongjiu.lu@intel.com>
-
- PR ld/22677
- * scripttempl/elf.sc (PREINIT_ARRAY): New.
- Don't add .preinit_array for ld -r.
- * testsuite/ld-elf/pr22677.d: New file.
- * testsuite/ld-elf/pr22677.s: Likewise.
-
-2018-01-11 Andrew Burgess <andrew.burgess@embecosm.com>
-
- * ldexp.h (union etree_union): Remove defsym field.
- * ldexp.c (exp_assop): Remove defsym parameter, and use of defsym
- parameter.
- (exp_assign): Remove passing of defsym parameter.
- (exp_defsym): Likewise.
- (exp_provide): Likewise.
-
-2018-01-11 Andrew Burgess <andrew.burgess@embecosm.com>
-
- * ldexp.c (exp_fold_tree_1): Rework condition underwhich provide
- nodes are ignored in the tree walk, and move the location at which
- we change provide nodes into provided nodes.
- (exp_init_os): Add etree_provided.
- * testsuite/ld-scripts/provide-6.d: New file.
- * testsuite/ld-scripts/provide-6.t: New file.
- * testsuite/ld-scripts/provide-7.d: New file.
- * testsuite/ld-scripts/provide-7.t: New file.
- * testsuite/ld-scripts/provide-8.d: New file.
- * testsuite/ld-scripts/provide-8.t: New file.
-
-2018-01-11 Andrew Burgess <andrew.burgess@embecosm.com>
-
- * testsuite/ld-scripts/provide-3.d: Add xfail directive.
- * testsuite/ld-scripts/provide-4.d: Use new map file name.
- * testsuite/ld-scripts/provide-5.d: Use new map file name.
- * testsuite/ld-scripts/provide-4-map.d: Renamed to...
- * testsuite/ld-scripts/provide-4.map: ...this.
- * testsuite/ld-scripts/provide-5-map.d: Renamed to...
- * testsuite/ld-scripts/provide-5.map: ...this.
- * testsuite/ld-scripts/provide.exp: Move xfail into provide-3.d
- file, and run tests in a loop.
-
-2018-01-11 Andrew Burgess <andrew.burgess@embecosm.com>
-
- * ldexp.c (exp_print_tree): Use '=' instead of ',' when printing
- PROVIDE statements.
- * testsuite/ld-scripts/provide-4.map: Update expected output.
- * testsuite/ld-scripts/provide-5.map: Likewise.
-
-2018-01-11 H.J. Lu <hongjiu.lu@intel.com>
-
- PR ld/22696
- * scripttempl/elf.sc: Fix the order of SHLIB_RODATA_ADDR.
-
-2018-01-09 Jim Wilson <jimw@sifive.com>
-
- * testsuite/ld-elf/eh-frame-hdr.d (#xfail): Delete
- (#alltargets): Renamed from #target. Add shared.
- * testsuite/lib/ld-lib.exp (run_dump_test): Document shared target.
- Document alltargets option. Add support for alltargets option.
- (istarget): Add support for shared target.
-
-2018-01-08 Jim Wilson <jimw@sifive.com>
-
- * testsuite/ld-riscv-elf/c-lui.d: Don't use -shared. Check for _start
- instead of .text.
- * testsuite/ld-riscv-elf/c-lui.s: Add _start label.
- * testsuite/ld-riscv-elf/ld-riscv-elf.exp: Before __global_pointer$
- tests, add call to check_shared_lib_support.
-
-2018-01-05 Jim Wilson <jimw@sifive.com>
-
- * testsuite/ld-riscv-elf/disas-jalr.d: New.
- * testsuite/ld-riscv-elf/disas-jalr.s: New.
- * testsuite/ld-riscv-elf/ld-riscv-elf.exp: Run new testcase.
-
- * emulparams/elf32lriscv-defs.sh (GENERATE_SHLIB_SCRIPT): Move inside
- case on $target, and don't set for riscv*-elf targets.
- (GENERATE_PIE_SCRIPT): Likewise.
-
-2018-01-03 Alan Modra <amodra@gmail.com>
-
- Update year range in copyright notice of all files.
-
-For older changes see ChangeLog-2017
-
-Copyright (C) 2018 Free Software Foundation, Inc.
-
-Copying and distribution of this file, with or without modification,
-are permitted in any medium without royalty provided the copyright
-notice and this notice are preserved.
-
-Local Variables:
-mode: change-log
-left-margin: 8
-fill-column: 74
-version-control: never
-End:
diff -rupN binutils-2.30/ld/ldlang.c.orig binutils-2.30-new/ld/ldlang.c.orig
--- binutils-2.30/ld/ldlang.c.orig 2018-01-13 14:31:16.000000000 +0100
+++ binutils-2.30-new/ld/ldlang.c.orig 1970-01-01 01:00:00.000000000 +0100
@@ -1,8782 +0,0 @@
-/* Linker command language support.
- Copyright (C) 1991-2018 Free Software Foundation, Inc.
-
- This file is part of the GNU Binutils.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
- MA 02110-1301, USA. */
-
-#include "sysdep.h"
-#include "bfd.h"
-#include "libiberty.h"
-#include "filenames.h"
-#include "safe-ctype.h"
-#include "obstack.h"
-#include "bfdlink.h"
-
-#include "ld.h"
-#include "ldmain.h"
-#include "ldexp.h"
-#include "ldlang.h"
-#include <ldgram.h>
-#include "ldlex.h"
-#include "ldmisc.h"
-#include "ldctor.h"
-#include "ldfile.h"
-#include "ldemul.h"
-#include "fnmatch.h"
-#include "demangle.h"
-#include "hashtab.h"
-#include "elf-bfd.h"
-#ifdef ENABLE_PLUGINS
-#include "plugin.h"
-#endif /* ENABLE_PLUGINS */
-
-#ifndef offsetof
-#define offsetof(TYPE, MEMBER) ((size_t) & (((TYPE*) 0)->MEMBER))
-#endif
-
-/* Convert between addresses in bytes and sizes in octets.
- For currently supported targets, octets_per_byte is always a power
- of two, so we can use shifts. */
-#define TO_ADDR(X) ((X) >> opb_shift)
-#define TO_SIZE(X) ((X) << opb_shift)
-
-/* Local variables. */
-static struct obstack stat_obstack;
-static struct obstack map_obstack;
-
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-static const char *entry_symbol_default = "start";
-static bfd_boolean map_head_is_link_order = FALSE;
-static lang_output_section_statement_type *default_common_section;
-static bfd_boolean map_option_f;
-static bfd_vma print_dot;
-static lang_input_statement_type *first_file;
-static const char *current_target;
-static lang_statement_list_type statement_list;
-static lang_statement_list_type *stat_save[10];
-static lang_statement_list_type **stat_save_ptr = &stat_save[0];
-static struct unique_sections *unique_section_list;
-static struct asneeded_minfo *asneeded_list_head;
-static unsigned int opb_shift = 0;
-
-/* Forward declarations. */
-static void exp_init_os (etree_type *);
-static lang_input_statement_type *lookup_name (const char *);
-static void insert_undefined (const char *);
-static bfd_boolean sort_def_symbol (struct bfd_link_hash_entry *, void *);
-static void print_statement (lang_statement_union_type *,
- lang_output_section_statement_type *);
-static void print_statement_list (lang_statement_union_type *,
- lang_output_section_statement_type *);
-static void print_statements (void);
-static void print_input_section (asection *, bfd_boolean);
-static bfd_boolean lang_one_common (struct bfd_link_hash_entry *, void *);
-static void lang_record_phdrs (void);
-static void lang_do_version_exports_section (void);
-static void lang_finalize_version_expr_head
- (struct bfd_elf_version_expr_head *);
-static void lang_do_memory_regions (void);
-
-/* Exported variables. */
-const char *output_target;
-lang_output_section_statement_type *abs_output_section;
-lang_statement_list_type lang_output_section_statement;
-lang_statement_list_type *stat_ptr = &statement_list;
-lang_statement_list_type file_chain = { NULL, NULL };
-lang_statement_list_type input_file_chain;
-struct bfd_sym_chain entry_symbol = { NULL, NULL };
-const char *entry_section = ".text";
-struct lang_input_statement_flags input_flags;
-bfd_boolean entry_from_cmdline;
-bfd_boolean undef_from_cmdline;
-bfd_boolean lang_has_input_file = FALSE;
-bfd_boolean had_output_filename = FALSE;
-bfd_boolean lang_float_flag = FALSE;
-bfd_boolean delete_output_file_on_failure = FALSE;
-struct lang_phdr *lang_phdr_list;
-struct lang_nocrossrefs *nocrossref_list;
-struct asneeded_minfo **asneeded_list_tail;
-
- /* Functions that traverse the linker script and might evaluate
- DEFINED() need to increment this at the start of the traversal. */
-int lang_statement_iteration = 0;
-
-/* Return TRUE if the PATTERN argument is a wildcard pattern.
- Although backslashes are treated specially if a pattern contains
- wildcards, we do not consider the mere presence of a backslash to
- be enough to cause the pattern to be treated as a wildcard.
- That lets us handle DOS filenames more naturally. */
-#define wildcardp(pattern) (strpbrk ((pattern), "?*[") != NULL)
-
-#define new_stat(x, y) \
- (x##_type *) new_statement (x##_enum, sizeof (x##_type), y)
-
-#define outside_section_address(q) \
- ((q)->output_offset + (q)->output_section->vma)
-
-#define outside_symbol_address(q) \
- ((q)->value + outside_section_address (q->section))
-
-#define SECTION_NAME_MAP_LENGTH (16)
-
-void *
-stat_alloc (size_t size)
-{
- return obstack_alloc (&stat_obstack, size);
-}
-
-static int
-name_match (const char *pattern, const char *name)
-{
- if (wildcardp (pattern))
- return fnmatch (pattern, name, 0);
- return strcmp (pattern, name);
-}
-
-/* If PATTERN is of the form archive:file, return a pointer to the
- separator. If not, return NULL. */
-
-static char *
-archive_path (const char *pattern)
-{
- char *p = NULL;
-
- if (link_info.path_separator == 0)
- return p;
-
- p = strchr (pattern, link_info.path_separator);
-#ifdef HAVE_DOS_BASED_FILE_SYSTEM
- if (p == NULL || link_info.path_separator != ':')
- return p;
-
- /* Assume a match on the second char is part of drive specifier,
- as in "c:\silly.dos". */
- if (p == pattern + 1 && ISALPHA (*pattern))
- p = strchr (p + 1, link_info.path_separator);
-#endif
- return p;
-}
-
-/* Given that FILE_SPEC results in a non-NULL SEP result from archive_path,
- return whether F matches FILE_SPEC. */
-
-static bfd_boolean
-input_statement_is_archive_path (const char *file_spec, char *sep,
- lang_input_statement_type *f)
-{
- bfd_boolean match = FALSE;
-
- if ((*(sep + 1) == 0
- || name_match (sep + 1, f->filename) == 0)
- && ((sep != file_spec)
- == (f->the_bfd != NULL && f->the_bfd->my_archive != NULL)))
- {
- match = TRUE;
-
- if (sep != file_spec)
- {
- const char *aname = f->the_bfd->my_archive->filename;
- *sep = 0;
- match = name_match (file_spec, aname) == 0;
- *sep = link_info.path_separator;
- }
- }
- return match;
-}
-
-static bfd_boolean
-unique_section_p (const asection *sec,
- const lang_output_section_statement_type *os)
-{
- struct unique_sections *unam;
- const char *secnam;
-
- if (!link_info.resolve_section_groups
- && sec->owner != NULL
- && bfd_is_group_section (sec->owner, sec))
- return !(os != NULL
- && strcmp (os->name, DISCARD_SECTION_NAME) == 0);
-
- secnam = sec->name;
- for (unam = unique_section_list; unam; unam = unam->next)
- if (name_match (unam->name, secnam) == 0)
- return TRUE;
-
- return FALSE;
-}
-
-/* Generic traversal routines for finding matching sections. */
-
-/* Return true if FILE matches a pattern in EXCLUDE_LIST, otherwise return
- false. */
-
-static bfd_boolean
-walk_wild_file_in_exclude_list (struct name_list *exclude_list,
- lang_input_statement_type *file)
-{
- struct name_list *list_tmp;
-
- for (list_tmp = exclude_list;
- list_tmp;
- list_tmp = list_tmp->next)
- {
- char *p = archive_path (list_tmp->name);
-
- if (p != NULL)
- {
- if (input_statement_is_archive_path (list_tmp->name, p, file))
- return TRUE;
- }
-
- else if (name_match (list_tmp->name, file->filename) == 0)
- return TRUE;
-
- /* FIXME: Perhaps remove the following at some stage? Matching
- unadorned archives like this was never documented and has
- been superceded by the archive:path syntax. */
- else if (file->the_bfd != NULL
- && file->the_bfd->my_archive != NULL
- && name_match (list_tmp->name,
- file->the_bfd->my_archive->filename) == 0)
- return TRUE;
- }
-
- return FALSE;
-}
-
-/* Try processing a section against a wildcard. This just calls
- the callback unless the filename exclusion list is present
- and excludes the file. It's hardly ever present so this
- function is very fast. */
-
-static void
-walk_wild_consider_section (lang_wild_statement_type *ptr,
- lang_input_statement_type *file,
- asection *s,
- struct wildcard_list *sec,
- callback_t callback,
- void *data)
-{
- /* Don't process sections from files which were excluded. */
- if (walk_wild_file_in_exclude_list (sec->spec.exclude_name_list, file))
- return;
-
- (*callback) (ptr, sec, s, ptr->section_flag_list, file, data);
-}
-
-/* Lowest common denominator routine that can handle everything correctly,
- but slowly. */
-
-static void
-walk_wild_section_general (lang_wild_statement_type *ptr,
- lang_input_statement_type *file,
- callback_t callback,
- void *data)
-{
- asection *s;
- struct wildcard_list *sec;
-
- for (s = file->the_bfd->sections; s != NULL; s = s->next)
- {
- sec = ptr->section_list;
- if (sec == NULL)
- (*callback) (ptr, sec, s, ptr->section_flag_list, file, data);
-
- while (sec != NULL)
- {
- bfd_boolean skip = FALSE;
-
- if (sec->spec.name != NULL)
- {
- const char *sname = bfd_get_section_name (file->the_bfd, s);
-
- skip = name_match (sec->spec.name, sname) != 0;
- }
-
- if (!skip)
- walk_wild_consider_section (ptr, file, s, sec, callback, data);
-
- sec = sec->next;
- }
- }
-}
-
-/* Routines to find a single section given its name. If there's more
- than one section with that name, we report that. */
-
-typedef struct
-{
- asection *found_section;
- bfd_boolean multiple_sections_found;
-} section_iterator_callback_data;
-
-static bfd_boolean
-section_iterator_callback (bfd *abfd ATTRIBUTE_UNUSED, asection *s, void *data)
-{
- section_iterator_callback_data *d = (section_iterator_callback_data *) data;
-
- if (d->found_section != NULL)
- {
- d->multiple_sections_found = TRUE;
- return TRUE;
- }
-
- d->found_section = s;
- return FALSE;
-}
-
-static asection *
-find_section (lang_input_statement_type *file,
- struct wildcard_list *sec,
- bfd_boolean *multiple_sections_found)
-{
- section_iterator_callback_data cb_data = { NULL, FALSE };
-
- bfd_get_section_by_name_if (file->the_bfd, sec->spec.name,
- section_iterator_callback, &cb_data);
- *multiple_sections_found = cb_data.multiple_sections_found;
- return cb_data.found_section;
-}
-
-/* Code for handling simple wildcards without going through fnmatch,
- which can be expensive because of charset translations etc. */
-
-/* A simple wild is a literal string followed by a single '*',
- where the literal part is at least 4 characters long. */
-
-static bfd_boolean
-is_simple_wild (const char *name)
-{
- size_t len = strcspn (name, "*?[");
- return len >= 4 && name[len] == '*' && name[len + 1] == '\0';
-}
-
-static bfd_boolean
-match_simple_wild (const char *pattern, const char *name)
-{
- /* The first four characters of the pattern are guaranteed valid
- non-wildcard characters. So we can go faster. */
- if (pattern[0] != name[0] || pattern[1] != name[1]
- || pattern[2] != name[2] || pattern[3] != name[3])
- return FALSE;
-
- pattern += 4;
- name += 4;
- while (*pattern != '*')
- if (*name++ != *pattern++)
- return FALSE;
-
- return TRUE;
-}
-
-/* Return the numerical value of the init_priority attribute from
- section name NAME. */
-
-static unsigned long
-get_init_priority (const char *name)
-{
- char *end;
- unsigned long init_priority;
-
- /* GCC uses the following section names for the init_priority
- attribute with numerical values 101 and 65535 inclusive. A
- lower value means a higher priority.
-
- 1: .init_array.NNNN/.fini_array.NNNN: Where NNNN is the
- decimal numerical value of the init_priority attribute.
- The order of execution in .init_array is forward and
- .fini_array is backward.
- 2: .ctors.NNNN/.dtors.NNNN: Where NNNN is 65535 minus the
- decimal numerical value of the init_priority attribute.
- The order of execution in .ctors is backward and .dtors
- is forward.
- */
- if (strncmp (name, ".init_array.", 12) == 0
- || strncmp (name, ".fini_array.", 12) == 0)
- {
- init_priority = strtoul (name + 12, &end, 10);
- return *end ? 0 : init_priority;
- }
- else if (strncmp (name, ".ctors.", 7) == 0
- || strncmp (name, ".dtors.", 7) == 0)
- {
- init_priority = strtoul (name + 7, &end, 10);
- return *end ? 0 : 65535 - init_priority;
- }
-
- return 0;
-}
-
-/* Compare sections ASEC and BSEC according to SORT. */
-
-static int
-compare_section (sort_type sort, asection *asec, asection *bsec)
-{
- int ret;
- unsigned long ainit_priority, binit_priority;
-
- switch (sort)
- {
- default:
- abort ();
-
- case by_init_priority:
- ainit_priority
- = get_init_priority (bfd_get_section_name (asec->owner, asec));
- binit_priority
- = get_init_priority (bfd_get_section_name (bsec->owner, bsec));
- if (ainit_priority == 0 || binit_priority == 0)
- goto sort_by_name;
- ret = ainit_priority - binit_priority;
- if (ret)
- break;
- else
- goto sort_by_name;
-
- case by_alignment_name:
- ret = (bfd_section_alignment (bsec->owner, bsec)
- - bfd_section_alignment (asec->owner, asec));
- if (ret)
- break;
- /* Fall through. */
-
- case by_name:
-sort_by_name:
- ret = strcmp (bfd_get_section_name (asec->owner, asec),
- bfd_get_section_name (bsec->owner, bsec));
- break;
-
- case by_name_alignment:
- ret = strcmp (bfd_get_section_name (asec->owner, asec),
- bfd_get_section_name (bsec->owner, bsec));
- if (ret)
- break;
- /* Fall through. */
-
- case by_alignment:
- ret = (bfd_section_alignment (bsec->owner, bsec)
- - bfd_section_alignment (asec->owner, asec));
- break;
- }
-
- return ret;
-}
-
-/* Build a Binary Search Tree to sort sections, unlike insertion sort
- used in wild_sort(). BST is considerably faster if the number of
- of sections are large. */
-
-static lang_section_bst_type **
-wild_sort_fast (lang_wild_statement_type *wild,
- struct wildcard_list *sec,
- lang_input_statement_type *file ATTRIBUTE_UNUSED,
- asection *section)
-{
- lang_section_bst_type **tree;
-
- tree = &wild->tree;
- if (!wild->filenames_sorted
- && (sec == NULL || sec->spec.sorted == none))
- {
- /* Append at the right end of tree. */
- while (*tree)
- tree = &((*tree)->right);
- return tree;
- }
-
- while (*tree)
- {
- /* Find the correct node to append this section. */
- if (compare_section (sec->spec.sorted, section, (*tree)->section) < 0)
- tree = &((*tree)->left);
- else
- tree = &((*tree)->right);
- }
-
- return tree;
-}
-
-/* Use wild_sort_fast to build a BST to sort sections. */
-
-static void
-output_section_callback_fast (lang_wild_statement_type *ptr,
- struct wildcard_list *sec,
- asection *section,
- struct flag_info *sflag_list ATTRIBUTE_UNUSED,
- lang_input_statement_type *file,
- void *output)
-{
- lang_section_bst_type *node;
- lang_section_bst_type **tree;
- lang_output_section_statement_type *os;
-
- os = (lang_output_section_statement_type *) output;
-
- if (unique_section_p (section, os))
- return;
-
- node = (lang_section_bst_type *) xmalloc (sizeof (lang_section_bst_type));
- node->left = 0;
- node->right = 0;
- node->section = section;
-
- tree = wild_sort_fast (ptr, sec, file, section);
- if (tree != NULL)
- *tree = node;
-}
-
-/* Convert a sorted sections' BST back to list form. */
-
-static void
-output_section_callback_tree_to_list (lang_wild_statement_type *ptr,
- lang_section_bst_type *tree,
- void *output)
-{
- if (tree->left)
- output_section_callback_tree_to_list (ptr, tree->left, output);
-
- lang_add_section (&ptr->children, tree->section, NULL,
- (lang_output_section_statement_type *) output);
-
- if (tree->right)
- output_section_callback_tree_to_list (ptr, tree->right, output);
-
- free (tree);
-}
-
-/* Specialized, optimized routines for handling different kinds of
- wildcards */
-
-static void
-walk_wild_section_specs1_wild0 (lang_wild_statement_type *ptr,
- lang_input_statement_type *file,
- callback_t callback,
- void *data)
-{
- /* We can just do a hash lookup for the section with the right name.
- But if that lookup discovers more than one section with the name
- (should be rare), we fall back to the general algorithm because
- we would otherwise have to sort the sections to make sure they
- get processed in the bfd's order. */
- bfd_boolean multiple_sections_found;
- struct wildcard_list *sec0 = ptr->handler_data[0];
- asection *s0 = find_section (file, sec0, &multiple_sections_found);
-
- if (multiple_sections_found)
- walk_wild_section_general (ptr, file, callback, data);
- else if (s0)
- walk_wild_consider_section (ptr, file, s0, sec0, callback, data);
-}
-
-static void
-walk_wild_section_specs1_wild1 (lang_wild_statement_type *ptr,
- lang_input_statement_type *file,
- callback_t callback,
- void *data)
-{
- asection *s;
- struct wildcard_list *wildsec0 = ptr->handler_data[0];
-
- for (s = file->the_bfd->sections; s != NULL; s = s->next)
- {
- const char *sname = bfd_get_section_name (file->the_bfd, s);
- bfd_boolean skip = !match_simple_wild (wildsec0->spec.name, sname);
-
- if (!skip)
- walk_wild_consider_section (ptr, file, s, wildsec0, callback, data);
- }
-}
-
-static void
-walk_wild_section_specs2_wild1 (lang_wild_statement_type *ptr,
- lang_input_statement_type *file,
- callback_t callback,
- void *data)
-{
- asection *s;
- struct wildcard_list *sec0 = ptr->handler_data[0];
- struct wildcard_list *wildsec1 = ptr->handler_data[1];
- bfd_boolean multiple_sections_found;
- asection *s0 = find_section (file, sec0, &multiple_sections_found);
-
- if (multiple_sections_found)
- {
- walk_wild_section_general (ptr, file, callback, data);
- return;
- }
-
- /* Note that if the section was not found, s0 is NULL and
- we'll simply never succeed the s == s0 test below. */
- for (s = file->the_bfd->sections; s != NULL; s = s->next)
- {
- /* Recall that in this code path, a section cannot satisfy more
- than one spec, so if s == s0 then it cannot match
- wildspec1. */
- if (s == s0)
- walk_wild_consider_section (ptr, file, s, sec0, callback, data);
- else
- {
- const char *sname = bfd_get_section_name (file->the_bfd, s);
- bfd_boolean skip = !match_simple_wild (wildsec1->spec.name, sname);
-
- if (!skip)
- walk_wild_consider_section (ptr, file, s, wildsec1, callback,
- data);
- }
- }
-}
-
-static void
-walk_wild_section_specs3_wild2 (lang_wild_statement_type *ptr,
- lang_input_statement_type *file,
- callback_t callback,
- void *data)
-{
- asection *s;
- struct wildcard_list *sec0 = ptr->handler_data[0];
- struct wildcard_list *wildsec1 = ptr->handler_data[1];
- struct wildcard_list *wildsec2 = ptr->handler_data[2];
- bfd_boolean multiple_sections_found;
- asection *s0 = find_section (file, sec0, &multiple_sections_found);
-
- if (multiple_sections_found)
- {
- walk_wild_section_general (ptr, file, callback, data);
- return;
- }
-
- for (s = file->the_bfd->sections; s != NULL; s = s->next)
- {
- if (s == s0)
- walk_wild_consider_section (ptr, file, s, sec0, callback, data);
- else
- {
- const char *sname = bfd_get_section_name (file->the_bfd, s);
- bfd_boolean skip = !match_simple_wild (wildsec1->spec.name, sname);
-
- if (!skip)
- walk_wild_consider_section (ptr, file, s, wildsec1, callback, data);
- else
- {
- skip = !match_simple_wild (wildsec2->spec.name, sname);
- if (!skip)
- walk_wild_consider_section (ptr, file, s, wildsec2, callback,
- data);
- }
- }
- }
-}
-
-static void
-walk_wild_section_specs4_wild2 (lang_wild_statement_type *ptr,
- lang_input_statement_type *file,
- callback_t callback,
- void *data)
-{
- asection *s;
- struct wildcard_list *sec0 = ptr->handler_data[0];
- struct wildcard_list *sec1 = ptr->handler_data[1];
- struct wildcard_list *wildsec2 = ptr->handler_data[2];
- struct wildcard_list *wildsec3 = ptr->handler_data[3];
- bfd_boolean multiple_sections_found;
- asection *s0 = find_section (file, sec0, &multiple_sections_found), *s1;
-
- if (multiple_sections_found)
- {
- walk_wild_section_general (ptr, file, callback, data);
- return;
- }
-
- s1 = find_section (file, sec1, &multiple_sections_found);
- if (multiple_sections_found)
- {
- walk_wild_section_general (ptr, file, callback, data);
- return;
- }
-
- for (s = file->the_bfd->sections; s != NULL; s = s->next)
- {
- if (s == s0)
- walk_wild_consider_section (ptr, file, s, sec0, callback, data);
- else
- if (s == s1)
- walk_wild_consider_section (ptr, file, s, sec1, callback, data);
- else
- {
- const char *sname = bfd_get_section_name (file->the_bfd, s);
- bfd_boolean skip = !match_simple_wild (wildsec2->spec.name,
- sname);
-
- if (!skip)
- walk_wild_consider_section (ptr, file, s, wildsec2, callback,
- data);
- else
- {
- skip = !match_simple_wild (wildsec3->spec.name, sname);
- if (!skip)
- walk_wild_consider_section (ptr, file, s, wildsec3,
- callback, data);
- }
- }
- }
-}
-
-static void
-walk_wild_section (lang_wild_statement_type *ptr,
- lang_input_statement_type *file,
- callback_t callback,
- void *data)
-{
- if (file->flags.just_syms)
- return;
-
- (*ptr->walk_wild_section_handler) (ptr, file, callback, data);
-}
-
-/* Returns TRUE when name1 is a wildcard spec that might match
- something name2 can match. We're conservative: we return FALSE
- only if the prefixes of name1 and name2 are different up to the
- first wildcard character. */
-
-static bfd_boolean
-wild_spec_can_overlap (const char *name1, const char *name2)
-{
- size_t prefix1_len = strcspn (name1, "?*[");
- size_t prefix2_len = strcspn (name2, "?*[");
- size_t min_prefix_len;
-
- /* Note that if there is no wildcard character, then we treat the
- terminating 0 as part of the prefix. Thus ".text" won't match
- ".text." or ".text.*", for example. */
- if (name1[prefix1_len] == '\0')
- prefix1_len++;
- if (name2[prefix2_len] == '\0')
- prefix2_len++;
-
- min_prefix_len = prefix1_len < prefix2_len ? prefix1_len : prefix2_len;
-
- return memcmp (name1, name2, min_prefix_len) == 0;
-}
-
-/* Select specialized code to handle various kinds of wildcard
- statements. */
-
-static void
-analyze_walk_wild_section_handler (lang_wild_statement_type *ptr)
-{
- int sec_count = 0;
- int wild_name_count = 0;
- struct wildcard_list *sec;
- int signature;
- int data_counter;
-
- ptr->walk_wild_section_handler = walk_wild_section_general;
- ptr->handler_data[0] = NULL;
- ptr->handler_data[1] = NULL;
- ptr->handler_data[2] = NULL;
- ptr->handler_data[3] = NULL;
- ptr->tree = NULL;
-
- /* Count how many wildcard_specs there are, and how many of those
- actually use wildcards in the name. Also, bail out if any of the
- wildcard names are NULL. (Can this actually happen?
- walk_wild_section used to test for it.) And bail out if any
- of the wildcards are more complex than a simple string
- ending in a single '*'. */
- for (sec = ptr->section_list; sec != NULL; sec = sec->next)
- {
- ++sec_count;
- if (sec->spec.name == NULL)
- return;
- if (wildcardp (sec->spec.name))
- {
- ++wild_name_count;
- if (!is_simple_wild (sec->spec.name))
- return;
- }
- }
-
- /* The zero-spec case would be easy to optimize but it doesn't
- happen in practice. Likewise, more than 4 specs doesn't
- happen in practice. */
- if (sec_count == 0 || sec_count > 4)
- return;
-
- /* Check that no two specs can match the same section. */
- for (sec = ptr->section_list; sec != NULL; sec = sec->next)
- {
- struct wildcard_list *sec2;
- for (sec2 = sec->next; sec2 != NULL; sec2 = sec2->next)
- {
- if (wild_spec_can_overlap (sec->spec.name, sec2->spec.name))
- return;
- }
- }
-
- signature = (sec_count << 8) + wild_name_count;
- switch (signature)
- {
- case 0x0100:
- ptr->walk_wild_section_handler = walk_wild_section_specs1_wild0;
- break;
- case 0x0101:
- ptr->walk_wild_section_handler = walk_wild_section_specs1_wild1;
- break;
- case 0x0201:
- ptr->walk_wild_section_handler = walk_wild_section_specs2_wild1;
- break;
- case 0x0302:
- ptr->walk_wild_section_handler = walk_wild_section_specs3_wild2;
- break;
- case 0x0402:
- ptr->walk_wild_section_handler = walk_wild_section_specs4_wild2;
- break;
- default:
- return;
- }
-
- /* Now fill the data array with pointers to the specs, first the
- specs with non-wildcard names, then the specs with wildcard
- names. It's OK to process the specs in different order from the
- given order, because we've already determined that no section
- will match more than one spec. */
- data_counter = 0;
- for (sec = ptr->section_list; sec != NULL; sec = sec->next)
- if (!wildcardp (sec->spec.name))
- ptr->handler_data[data_counter++] = sec;
- for (sec = ptr->section_list; sec != NULL; sec = sec->next)
- if (wildcardp (sec->spec.name))
- ptr->handler_data[data_counter++] = sec;
-}
-
-/* Handle a wild statement for a single file F. */
-
-static void
-walk_wild_file (lang_wild_statement_type *s,
- lang_input_statement_type *f,
- callback_t callback,
- void *data)
-{
- if (walk_wild_file_in_exclude_list (s->exclude_name_list, f))
- return;
-
- if (f->the_bfd == NULL
- || !bfd_check_format (f->the_bfd, bfd_archive))
- walk_wild_section (s, f, callback, data);
- else
- {
- bfd *member;
-
- /* This is an archive file. We must map each member of the
- archive separately. */
- member = bfd_openr_next_archived_file (f->the_bfd, NULL);
- while (member != NULL)
- {
- /* When lookup_name is called, it will call the add_symbols
- entry point for the archive. For each element of the
- archive which is included, BFD will call ldlang_add_file,
- which will set the usrdata field of the member to the
- lang_input_statement. */
- if (member->usrdata != NULL)
- {
- walk_wild_section (s,
- (lang_input_statement_type *) member->usrdata,
- callback, data);
- }
-
- member = bfd_openr_next_archived_file (f->the_bfd, member);
- }
- }
-}
-
-static void
-walk_wild (lang_wild_statement_type *s, callback_t callback, void *data)
-{
- const char *file_spec = s->filename;
- char *p;
-
- if (file_spec == NULL)
- {
- /* Perform the iteration over all files in the list. */
- LANG_FOR_EACH_INPUT_STATEMENT (f)
- {
- walk_wild_file (s, f, callback, data);
- }
- }
- else if ((p = archive_path (file_spec)) != NULL)
- {
- LANG_FOR_EACH_INPUT_STATEMENT (f)
- {
- if (input_statement_is_archive_path (file_spec, p, f))
- walk_wild_file (s, f, callback, data);
- }
- }
- else if (wildcardp (file_spec))
- {
- LANG_FOR_EACH_INPUT_STATEMENT (f)
- {
- if (fnmatch (file_spec, f->filename, 0) == 0)
- walk_wild_file (s, f, callback, data);
- }
- }
- else
- {
- lang_input_statement_type *f;
-
- /* Perform the iteration over a single file. */
- f = lookup_name (file_spec);
- if (f)
- walk_wild_file (s, f, callback, data);
- }
-}
-
-/* lang_for_each_statement walks the parse tree and calls the provided
- function for each node, except those inside output section statements
- with constraint set to -1. */
-
-void
-lang_for_each_statement_worker (void (*func) (lang_statement_union_type *),
- lang_statement_union_type *s)
-{
- for (; s != NULL; s = s->header.next)
- {
- func (s);
-
- switch (s->header.type)
- {
- case lang_constructors_statement_enum:
- lang_for_each_statement_worker (func, constructor_list.head);
- break;
- case lang_output_section_statement_enum:
- if (s->output_section_statement.constraint != -1)
- lang_for_each_statement_worker
- (func, s->output_section_statement.children.head);
- break;
- case lang_wild_statement_enum:
- lang_for_each_statement_worker (func,
- s->wild_statement.children.head);
- break;
- case lang_group_statement_enum:
- lang_for_each_statement_worker (func,
- s->group_statement.children.head);
- break;
- case lang_data_statement_enum:
- case lang_reloc_statement_enum:
- case lang_object_symbols_statement_enum:
- case lang_output_statement_enum:
- case lang_target_statement_enum:
- case lang_input_section_enum:
- case lang_input_statement_enum:
- case lang_assignment_statement_enum:
- case lang_padding_statement_enum:
- case lang_address_statement_enum:
- case lang_fill_statement_enum:
- case lang_insert_statement_enum:
- break;
- default:
- FAIL ();
- break;
- }
- }
-}
-
-void
-lang_for_each_statement (void (*func) (lang_statement_union_type *))
-{
- lang_for_each_statement_worker (func, statement_list.head);
-}
-
-/*----------------------------------------------------------------------*/
-
-void
-lang_list_init (lang_statement_list_type *list)
-{
- list->head = NULL;
- list->tail = &list->head;
-}
-
-void
-push_stat_ptr (lang_statement_list_type *new_ptr)
-{
- if (stat_save_ptr >= stat_save + sizeof (stat_save) / sizeof (stat_save[0]))
- abort ();
- *stat_save_ptr++ = stat_ptr;
- stat_ptr = new_ptr;
-}
-
-void
-pop_stat_ptr (void)
-{
- if (stat_save_ptr <= stat_save)
- abort ();
- stat_ptr = *--stat_save_ptr;
-}
-
-/* Build a new statement node for the parse tree. */
-
-static lang_statement_union_type *
-new_statement (enum statement_enum type,
- size_t size,
- lang_statement_list_type *list)
-{
- lang_statement_union_type *new_stmt;
-
- new_stmt = (lang_statement_union_type *) stat_alloc (size);
- new_stmt->header.type = type;
- new_stmt->header.next = NULL;
- lang_statement_append (list, new_stmt, &new_stmt->header.next);
- return new_stmt;
-}
-
-/* Build a new input file node for the language. There are several
- ways in which we treat an input file, eg, we only look at symbols,
- or prefix it with a -l etc.
-
- We can be supplied with requests for input files more than once;
- they may, for example be split over several lines like foo.o(.text)
- foo.o(.data) etc, so when asked for a file we check that we haven't
- got it already so we don't duplicate the bfd. */
-
-static lang_input_statement_type *
-new_afile (const char *name,
- lang_input_file_enum_type file_type,
- const char *target,
- bfd_boolean add_to_list)
-{
- lang_input_statement_type *p;
-
- lang_has_input_file = TRUE;
-
- if (add_to_list)
- p = (lang_input_statement_type *) new_stat (lang_input_statement, stat_ptr);
- else
- {
- p = (lang_input_statement_type *)
- stat_alloc (sizeof (lang_input_statement_type));
- p->header.type = lang_input_statement_enum;
- p->header.next = NULL;
- }
-
- memset (&p->the_bfd, 0,
- sizeof (*p) - offsetof (lang_input_statement_type, the_bfd));
- p->target = target;
- p->flags.dynamic = input_flags.dynamic;
- p->flags.add_DT_NEEDED_for_dynamic = input_flags.add_DT_NEEDED_for_dynamic;
- p->flags.add_DT_NEEDED_for_regular = input_flags.add_DT_NEEDED_for_regular;
- p->flags.whole_archive = input_flags.whole_archive;
- p->flags.sysrooted = input_flags.sysrooted;
-
- switch (file_type)
- {
- case lang_input_file_is_symbols_only_enum:
- p->filename = name;
- p->local_sym_name = name;
- p->flags.real = TRUE;
- p->flags.just_syms = TRUE;
- break;
- case lang_input_file_is_fake_enum:
- p->filename = name;
- p->local_sym_name = name;
- break;
- case lang_input_file_is_l_enum:
- if (name[0] == ':' && name[1] != '\0')
- {
- p->filename = name + 1;
- p->flags.full_name_provided = TRUE;
- }
- else
- p->filename = name;
- p->local_sym_name = concat ("-l", name, (const char *) NULL);
- p->flags.maybe_archive = TRUE;
- p->flags.real = TRUE;
- p->flags.search_dirs = TRUE;
- break;
- case lang_input_file_is_marker_enum:
- p->filename = name;
- p->local_sym_name = name;
- p->flags.search_dirs = TRUE;
- break;
- case lang_input_file_is_search_file_enum:
- p->filename = name;
- p->local_sym_name = name;
- p->flags.real = TRUE;
- p->flags.search_dirs = TRUE;
- break;
- case lang_input_file_is_file_enum:
- p->filename = name;
- p->local_sym_name = name;
- p->flags.real = TRUE;
- break;
- default:
- FAIL ();
- }
-
- lang_statement_append (&input_file_chain,
- (lang_statement_union_type *) p,
- &p->next_real_file);
- return p;
-}
-
-lang_input_statement_type *
-lang_add_input_file (const char *name,
- lang_input_file_enum_type file_type,
- const char *target)
-{
- if (name != NULL
- && (*name == '=' || CONST_STRNEQ (name, "$SYSROOT")))
- {
- lang_input_statement_type *ret;
- char *sysrooted_name
- = concat (ld_sysroot,
- name + (*name == '=' ? 1 : strlen ("$SYSROOT")),
- (const char *) NULL);
-
- /* We've now forcibly prepended the sysroot, making the input
- file independent of the context. Therefore, temporarily
- force a non-sysrooted context for this statement, so it won't
- get the sysroot prepended again when opened. (N.B. if it's a
- script, any child nodes with input files starting with "/"
- will be handled as "sysrooted" as they'll be found to be
- within the sysroot subdirectory.) */
- unsigned int outer_sysrooted = input_flags.sysrooted;
- input_flags.sysrooted = 0;
- ret = new_afile (sysrooted_name, file_type, target, TRUE);
- input_flags.sysrooted = outer_sysrooted;
- return ret;
- }
-
- return new_afile (name, file_type, target, TRUE);
-}
-
-struct out_section_hash_entry
-{
- struct bfd_hash_entry root;
- lang_statement_union_type s;
-};
-
-/* The hash table. */
-
-static struct bfd_hash_table output_section_statement_table;
-
-/* Support routines for the hash table used by lang_output_section_find,
- initialize the table, fill in an entry and remove the table. */
-
-static struct bfd_hash_entry *
-output_section_statement_newfunc (struct bfd_hash_entry *entry,
- struct bfd_hash_table *table,
- const char *string)
-{
- lang_output_section_statement_type **nextp;
- struct out_section_hash_entry *ret;
-
- if (entry == NULL)
- {
- entry = (struct bfd_hash_entry *) bfd_hash_allocate (table,
- sizeof (*ret));
- if (entry == NULL)
- return entry;
- }
-
- entry = bfd_hash_newfunc (entry, table, string);
- if (entry == NULL)
- return entry;
-
- ret = (struct out_section_hash_entry *) entry;
- memset (&ret->s, 0, sizeof (ret->s));
- ret->s.header.type = lang_output_section_statement_enum;
- ret->s.output_section_statement.subsection_alignment = -1;
- ret->s.output_section_statement.section_alignment = -1;
- ret->s.output_section_statement.block_value = 1;
- lang_list_init (&ret->s.output_section_statement.children);
- lang_statement_append (stat_ptr, &ret->s, &ret->s.header.next);
-
- /* For every output section statement added to the list, except the
- first one, lang_output_section_statement.tail points to the "next"
- field of the last element of the list. */
- if (lang_output_section_statement.head != NULL)
- ret->s.output_section_statement.prev
- = ((lang_output_section_statement_type *)
- ((char *) lang_output_section_statement.tail
- - offsetof (lang_output_section_statement_type, next)));
-
- /* GCC's strict aliasing rules prevent us from just casting the
- address, so we store the pointer in a variable and cast that
- instead. */
- nextp = &ret->s.output_section_statement.next;
- lang_statement_append (&lang_output_section_statement,
- &ret->s,
- (lang_statement_union_type **) nextp);
- return &ret->root;
-}
-
-static void
-output_section_statement_table_init (void)
-{
- if (!bfd_hash_table_init_n (&output_section_statement_table,
- output_section_statement_newfunc,
- sizeof (struct out_section_hash_entry),
- 61))
- einfo (_("%P%F: can not create hash table: %E\n"));
-}
-
-static void
-output_section_statement_table_free (void)
-{
- bfd_hash_table_free (&output_section_statement_table);
-}
-
-/* Build enough state so that the parser can build its tree. */
-
-void
-lang_init (void)
-{
- obstack_begin (&stat_obstack, 1000);
-
- stat_ptr = &statement_list;
-
- output_section_statement_table_init ();
-
- lang_list_init (stat_ptr);
-
- lang_list_init (&input_file_chain);
- lang_list_init (&lang_output_section_statement);
- lang_list_init (&file_chain);
- first_file = lang_add_input_file (NULL, lang_input_file_is_marker_enum,
- NULL);
- abs_output_section =
- lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME, 0, TRUE);
-
- abs_output_section->bfd_section = bfd_abs_section_ptr;
-
- asneeded_list_head = NULL;
- asneeded_list_tail = &asneeded_list_head;
-}
-
-void
-lang_finish (void)
-{
- output_section_statement_table_free ();
-}
-
-/*----------------------------------------------------------------------
- A region is an area of memory declared with the
- MEMORY { name:org=exp, len=exp ... }
- syntax.
-
- We maintain a list of all the regions here.
-
- If no regions are specified in the script, then the default is used
- which is created when looked up to be the entire data space.
-
- If create is true we are creating a region inside a MEMORY block.
- In this case it is probably an error to create a region that has
- already been created. If we are not inside a MEMORY block it is
- dubious to use an undeclared region name (except DEFAULT_MEMORY_REGION)
- and so we issue a warning.
-
- Each region has at least one name. The first name is either
- DEFAULT_MEMORY_REGION or the name given in the MEMORY block. You can add
- alias names to an existing region within a script with
- REGION_ALIAS (alias, region_name). Each name corresponds to at most one
- region. */
-
-static lang_memory_region_type *lang_memory_region_list;
-static lang_memory_region_type **lang_memory_region_list_tail
- = &lang_memory_region_list;
-
-lang_memory_region_type *
-lang_memory_region_lookup (const char *const name, bfd_boolean create)
-{
- lang_memory_region_name *n;
- lang_memory_region_type *r;
- lang_memory_region_type *new_region;
-
- /* NAME is NULL for LMA memspecs if no region was specified. */
- if (name == NULL)
- return NULL;
-
- for (r = lang_memory_region_list; r != NULL; r = r->next)
- for (n = &r->name_list; n != NULL; n = n->next)
- if (strcmp (n->name, name) == 0)
- {
- if (create)
- einfo (_("%P:%S: warning: redeclaration of memory region `%s'\n"),
- NULL, name);
- return r;
- }
-
- if (!create && strcmp (name, DEFAULT_MEMORY_REGION))
- einfo (_("%P:%S: warning: memory region `%s' not declared\n"),
- NULL, name);
-
- new_region = (lang_memory_region_type *)
- stat_alloc (sizeof (lang_memory_region_type));
-
- new_region->name_list.name = xstrdup (name);
- new_region->name_list.next = NULL;
- new_region->next = NULL;
- new_region->origin_exp = NULL;
- new_region->origin = 0;
- new_region->length_exp = NULL;
- new_region->length = ~(bfd_size_type) 0;
- new_region->current = 0;
- new_region->last_os = NULL;
- new_region->flags = 0;
- new_region->not_flags = 0;
- new_region->had_full_message = FALSE;
-
- *lang_memory_region_list_tail = new_region;
- lang_memory_region_list_tail = &new_region->next;
-
- return new_region;
-}
-
-void
-lang_memory_region_alias (const char *alias, const char *region_name)
-{
- lang_memory_region_name *n;
- lang_memory_region_type *r;
- lang_memory_region_type *region;
-
- /* The default region must be unique. This ensures that it is not necessary
- to iterate through the name list if someone wants the check if a region is
- the default memory region. */
- if (strcmp (region_name, DEFAULT_MEMORY_REGION) == 0
- || strcmp (alias, DEFAULT_MEMORY_REGION) == 0)
- einfo (_("%F%P:%S: error: alias for default memory region\n"), NULL);
-
- /* Look for the target region and check if the alias is not already
- in use. */
- region = NULL;
- for (r = lang_memory_region_list; r != NULL; r = r->next)
- for (n = &r->name_list; n != NULL; n = n->next)
- {
- if (region == NULL && strcmp (n->name, region_name) == 0)
- region = r;
- if (strcmp (n->name, alias) == 0)
- einfo (_("%F%P:%S: error: redefinition of memory region "
- "alias `%s'\n"),
- NULL, alias);
- }
-
- /* Check if the target region exists. */
- if (region == NULL)
- einfo (_("%F%P:%S: error: memory region `%s' "
- "for alias `%s' does not exist\n"),
- NULL, region_name, alias);
-
- /* Add alias to region name list. */
- n = (lang_memory_region_name *) stat_alloc (sizeof (lang_memory_region_name));
- n->name = xstrdup (alias);
- n->next = region->name_list.next;
- region->name_list.next = n;
-}
-
-static lang_memory_region_type *
-lang_memory_default (asection *section)
-{
- lang_memory_region_type *p;
-
- flagword sec_flags = section->flags;
-
- /* Override SEC_DATA to mean a writable section. */
- if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC)
- sec_flags |= SEC_DATA;
-
- for (p = lang_memory_region_list; p != NULL; p = p->next)
- {
- if ((p->flags & sec_flags) != 0
- && (p->not_flags & sec_flags) == 0)
- {
- return p;
- }
- }
- return lang_memory_region_lookup (DEFAULT_MEMORY_REGION, FALSE);
-}
-
-/* Get the output section statement directly from the userdata. */
-
-lang_output_section_statement_type *
-lang_output_section_get (const asection *output_section)
-{
- return get_userdata (output_section);
-}
-
-/* Find or create an output_section_statement with the given NAME.
- If CONSTRAINT is non-zero match one with that constraint, otherwise
- match any non-negative constraint. If CREATE, always make a
- new output_section_statement for SPECIAL CONSTRAINT. */
-
-lang_output_section_statement_type *
-lang_output_section_statement_lookup (const char *name,
- int constraint,
- bfd_boolean create)
-{
- struct out_section_hash_entry *entry;
-
- entry = ((struct out_section_hash_entry *)
- bfd_hash_lookup (&output_section_statement_table, name,
- create, FALSE));
- if (entry == NULL)
- {
- if (create)
- einfo (_("%P%F: failed creating section `%s': %E\n"), name);
- return NULL;
- }
-
- if (entry->s.output_section_statement.name != NULL)
- {
- /* We have a section of this name, but it might not have the correct
- constraint. */
- struct out_section_hash_entry *last_ent;
-
- name = entry->s.output_section_statement.name;
- if (create && constraint == SPECIAL)
- /* Not traversing to the end reverses the order of the second
- and subsequent SPECIAL sections in the hash table chain,
- but that shouldn't matter. */
- last_ent = entry;
- else
- do
- {
- if (constraint == entry->s.output_section_statement.constraint
- || (constraint == 0
- && entry->s.output_section_statement.constraint >= 0))
- return &entry->s.output_section_statement;
- last_ent = entry;
- entry = (struct out_section_hash_entry *) entry->root.next;
- }
- while (entry != NULL
- && name == entry->s.output_section_statement.name);
-
- if (!create)
- return NULL;
-
- entry
- = ((struct out_section_hash_entry *)
- output_section_statement_newfunc (NULL,
- &output_section_statement_table,
- name));
- if (entry == NULL)
- {
- einfo (_("%P%F: failed creating section `%s': %E\n"), name);
- return NULL;
- }
- entry->root = last_ent->root;
- last_ent->root.next = &entry->root;
- }
-
- entry->s.output_section_statement.name = name;
- entry->s.output_section_statement.constraint = constraint;
- return &entry->s.output_section_statement;
-}
-
-/* Find the next output_section_statement with the same name as OS.
- If CONSTRAINT is non-zero, find one with that constraint otherwise
- match any non-negative constraint. */
-
-lang_output_section_statement_type *
-next_matching_output_section_statement (lang_output_section_statement_type *os,
- int constraint)
-{
- /* All output_section_statements are actually part of a
- struct out_section_hash_entry. */
- struct out_section_hash_entry *entry = (struct out_section_hash_entry *)
- ((char *) os
- - offsetof (struct out_section_hash_entry, s.output_section_statement));
- const char *name = os->name;
-
- ASSERT (name == entry->root.string);
- do
- {
- entry = (struct out_section_hash_entry *) entry->root.next;
- if (entry == NULL
- || name != entry->s.output_section_statement.name)
- return NULL;
- }
- while (constraint != entry->s.output_section_statement.constraint
- && (constraint != 0
- || entry->s.output_section_statement.constraint < 0));
-
- return &entry->s.output_section_statement;
-}
-
-/* A variant of lang_output_section_find used by place_orphan.
- Returns the output statement that should precede a new output
- statement for SEC. If an exact match is found on certain flags,
- sets *EXACT too. */
-
-lang_output_section_statement_type *
-lang_output_section_find_by_flags (const asection *sec,
- flagword sec_flags,
- lang_output_section_statement_type **exact,
- lang_match_sec_type_func match_type)
-{
- lang_output_section_statement_type *first, *look, *found;
- flagword look_flags, differ;
-
- /* We know the first statement on this list is *ABS*. May as well
- skip it. */
- first = &lang_output_section_statement.head->output_section_statement;
- first = first->next;
-
- /* First try for an exact match. */
- found = NULL;
- for (look = first; look; look = look->next)
- {
- look_flags = look->flags;
- if (look->bfd_section != NULL)
- {
- look_flags = look->bfd_section->flags;
- if (match_type && !match_type (link_info.output_bfd,
- look->bfd_section,
- sec->owner, sec))
- continue;
- }
- differ = look_flags ^ sec_flags;
- if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY
- | SEC_CODE | SEC_SMALL_DATA | SEC_THREAD_LOCAL)))
- found = look;
- }
- if (found != NULL)
- {
- if (exact != NULL)
- *exact = found;
- return found;
- }
-
- if ((sec_flags & SEC_CODE) != 0
- && (sec_flags & SEC_ALLOC) != 0)
- {
- /* Try for a rw code section. */
- for (look = first; look; look = look->next)
- {
- look_flags = look->flags;
- if (look->bfd_section != NULL)
- {
- look_flags = look->bfd_section->flags;
- if (match_type && !match_type (link_info.output_bfd,
- look->bfd_section,
- sec->owner, sec))
- continue;
- }
- differ = look_flags ^ sec_flags;
- if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
- | SEC_CODE | SEC_SMALL_DATA | SEC_THREAD_LOCAL)))
- found = look;
- }
- }
- else if ((sec_flags & SEC_READONLY) != 0
- && (sec_flags & SEC_ALLOC) != 0)
- {
- /* .rodata can go after .text, .sdata2 after .rodata. */
- for (look = first; look; look = look->next)
- {
- look_flags = look->flags;
- if (look->bfd_section != NULL)
- {
- look_flags = look->bfd_section->flags;
- if (match_type && !match_type (link_info.output_bfd,
- look->bfd_section,
- sec->owner, sec))
- continue;
- }
- differ = look_flags ^ sec_flags;
- if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
- | SEC_READONLY | SEC_SMALL_DATA))
- || (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
- | SEC_READONLY))
- && !(look_flags & SEC_SMALL_DATA)))
- found = look;
- }
- }
- else if ((sec_flags & SEC_THREAD_LOCAL) != 0
- && (sec_flags & SEC_ALLOC) != 0)
- {
- /* .tdata can go after .data, .tbss after .tdata. Treat .tbss
- as if it were a loaded section, and don't use match_type. */
- bfd_boolean seen_thread_local = FALSE;
-
- match_type = NULL;
- for (look = first; look; look = look->next)
- {
- look_flags = look->flags;
- if (look->bfd_section != NULL)
- look_flags = look->bfd_section->flags;
-
- differ = look_flags ^ (sec_flags | SEC_LOAD | SEC_HAS_CONTENTS);
- if (!(differ & (SEC_THREAD_LOCAL | SEC_ALLOC)))
- {
- /* .tdata and .tbss must be adjacent and in that order. */
- if (!(look_flags & SEC_LOAD)
- && (sec_flags & SEC_LOAD))
- /* ..so if we're at a .tbss section and we're placing
- a .tdata section stop looking and return the
- previous section. */
- break;
- found = look;
- seen_thread_local = TRUE;
- }
- else if (seen_thread_local)
- break;
- else if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD)))
- found = look;
- }
- }
- else if ((sec_flags & SEC_SMALL_DATA) != 0
- && (sec_flags & SEC_ALLOC) != 0)
- {
- /* .sdata goes after .data, .sbss after .sdata. */
- for (look = first; look; look = look->next)
- {
- look_flags = look->flags;
- if (look->bfd_section != NULL)
- {
- look_flags = look->bfd_section->flags;
- if (match_type && !match_type (link_info.output_bfd,
- look->bfd_section,
- sec->owner, sec))
- continue;
- }
- differ = look_flags ^ sec_flags;
- if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
- | SEC_THREAD_LOCAL))
- || ((look_flags & SEC_SMALL_DATA)
- && !(sec_flags & SEC_HAS_CONTENTS)))
- found = look;
- }
- }
- else if ((sec_flags & SEC_HAS_CONTENTS) != 0
- && (sec_flags & SEC_ALLOC) != 0)
- {
- /* .data goes after .rodata. */
- for (look = first; look; look = look->next)
- {
- look_flags = look->flags;
- if (look->bfd_section != NULL)
- {
- look_flags = look->bfd_section->flags;
- if (match_type && !match_type (link_info.output_bfd,
- look->bfd_section,
- sec->owner, sec))
- continue;
- }
- differ = look_flags ^ sec_flags;
- if (!(differ & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
- | SEC_SMALL_DATA | SEC_THREAD_LOCAL)))
- found = look;
- }
- }
- else if ((sec_flags & SEC_ALLOC) != 0)
- {
- /* .bss goes after any other alloc section. */
- for (look = first; look; look = look->next)
- {
- look_flags = look->flags;
- if (look->bfd_section != NULL)
- {
- look_flags = look->bfd_section->flags;
- if (match_type && !match_type (link_info.output_bfd,
- look->bfd_section,
- sec->owner, sec))
- continue;
- }
- differ = look_flags ^ sec_flags;
- if (!(differ & SEC_ALLOC))
- found = look;
- }
- }
- else
- {
- /* non-alloc go last. */
- for (look = first; look; look = look->next)
- {
- look_flags = look->flags;
- if (look->bfd_section != NULL)
- look_flags = look->bfd_section->flags;
- differ = look_flags ^ sec_flags;
- if (!(differ & SEC_DEBUGGING))
- found = look;
- }
- return found;
- }
-
- if (found || !match_type)
- return found;
-
- return lang_output_section_find_by_flags (sec, sec_flags, NULL, NULL);
-}
-
-/* Find the last output section before given output statement.
- Used by place_orphan. */
-
-static asection *
-output_prev_sec_find (lang_output_section_statement_type *os)
-{
- lang_output_section_statement_type *lookup;
-
- for (lookup = os->prev; lookup != NULL; lookup = lookup->prev)
- {
- if (lookup->constraint < 0)
- continue;
-
- if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL)
- return lookup->bfd_section;
- }
-
- return NULL;
-}
-
-/* Look for a suitable place for a new output section statement. The
- idea is to skip over anything that might be inside a SECTIONS {}
- statement in a script, before we find another output section
- statement. Assignments to "dot" before an output section statement
- are assumed to belong to it, except in two cases; The first
- assignment to dot, and assignments before non-alloc sections.
- Otherwise we might put an orphan before . = . + SIZEOF_HEADERS or
- similar assignments that set the initial address, or we might
- insert non-alloc note sections among assignments setting end of
- image symbols. */
-
-static lang_statement_union_type **
-insert_os_after (lang_output_section_statement_type *after)
-{
- lang_statement_union_type **where;
- lang_statement_union_type **assign = NULL;
- bfd_boolean ignore_first;
-
- ignore_first
- = after == &lang_output_section_statement.head->output_section_statement;
-
- for (where = &after->header.next;
- *where != NULL;
- where = &(*where)->header.next)
- {
- switch ((*where)->header.type)
- {
- case lang_assignment_statement_enum:
- if (assign == NULL)
- {
- lang_assignment_statement_type *ass;
-
- ass = &(*where)->assignment_statement;
- if (ass->exp->type.node_class != etree_assert
- && ass->exp->assign.dst[0] == '.'
- && ass->exp->assign.dst[1] == 0
- && !ignore_first)
- assign = where;
- }
- ignore_first = FALSE;
- continue;
- case lang_wild_statement_enum:
- case lang_input_section_enum:
- case lang_object_symbols_statement_enum:
- case lang_fill_statement_enum:
- case lang_data_statement_enum:
- case lang_reloc_statement_enum:
- case lang_padding_statement_enum:
- case lang_constructors_statement_enum:
- assign = NULL;
- continue;
- case lang_output_section_statement_enum:
- if (assign != NULL)
- {
- asection *s = (*where)->output_section_statement.bfd_section;
-
- if (s == NULL
- || s->map_head.s == NULL
- || (s->flags & SEC_ALLOC) != 0)
- where = assign;
- }
- break;
- case lang_input_statement_enum:
- case lang_address_statement_enum:
- case lang_target_statement_enum:
- case lang_output_statement_enum:
- case lang_group_statement_enum:
- case lang_insert_statement_enum:
- continue;
- }
- break;
- }
-
- return where;
-}
-
-lang_output_section_statement_type *
-lang_insert_orphan (asection *s,
- const char *secname,
- int constraint,
- lang_output_section_statement_type *after,
- struct orphan_save *place,
- etree_type *address,
- lang_statement_list_type *add_child)
-{
- lang_statement_list_type add;
- lang_output_section_statement_type *os;
- lang_output_section_statement_type **os_tail;
-
- /* If we have found an appropriate place for the output section
- statements for this orphan, add them to our own private list,
- inserting them later into the global statement list. */
- if (after != NULL)
- {
- lang_list_init (&add);
- push_stat_ptr (&add);
- }
-
- if (bfd_link_relocatable (&link_info)
- || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
- address = exp_intop (0);
-
- os_tail = ((lang_output_section_statement_type **)
- lang_output_section_statement.tail);
- os = lang_enter_output_section_statement (secname, address, normal_section,
- NULL, NULL, NULL, constraint, 0);
-
- if (add_child == NULL)
- add_child = &os->children;
- lang_add_section (add_child, s, NULL, os);
-
- if (after && (s->flags & (SEC_LOAD | SEC_ALLOC)) != 0)
- {
- const char *region = (after->region
- ? after->region->name_list.name
- : DEFAULT_MEMORY_REGION);
- const char *lma_region = (after->lma_region
- ? after->lma_region->name_list.name
- : NULL);
- lang_leave_output_section_statement (NULL, region, after->phdrs,
- lma_region);
- }
- else
- lang_leave_output_section_statement (NULL, DEFAULT_MEMORY_REGION, NULL,
- NULL);
-
- /* Restore the global list pointer. */
- if (after != NULL)
- pop_stat_ptr ();
-
- if (after != NULL && os->bfd_section != NULL)
- {
- asection *snew, *as;
-
- snew = os->bfd_section;
-
- /* Shuffle the bfd section list to make the output file look
- neater. This is really only cosmetic. */
- if (place->section == NULL
- && after != (&lang_output_section_statement.head
- ->output_section_statement))
- {
- asection *bfd_section = after->bfd_section;
-
- /* If the output statement hasn't been used to place any input
- sections (and thus doesn't have an output bfd_section),
- look for the closest prior output statement having an
- output section. */
- if (bfd_section == NULL)
- bfd_section = output_prev_sec_find (after);
-
- if (bfd_section != NULL && bfd_section != snew)
- place->section = &bfd_section->next;
- }
-
- if (place->section == NULL)
- place->section = &link_info.output_bfd->sections;
-
- as = *place->section;
-
- if (!as)
- {
- /* Put the section at the end of the list. */
-
- /* Unlink the section. */
- bfd_section_list_remove (link_info.output_bfd, snew);
-
- /* Now tack it back on in the right place. */
- bfd_section_list_append (link_info.output_bfd, snew);
- }
- else if (as != snew && as->prev != snew)
- {
- /* Unlink the section. */
- bfd_section_list_remove (link_info.output_bfd, snew);
-
- /* Now tack it back on in the right place. */
- bfd_section_list_insert_before (link_info.output_bfd, as, snew);
- }
-
- /* Save the end of this list. Further ophans of this type will
- follow the one we've just added. */
- place->section = &snew->next;
-
- /* The following is non-cosmetic. We try to put the output
- statements in some sort of reasonable order here, because they
- determine the final load addresses of the orphan sections.
- In addition, placing output statements in the wrong order may
- require extra segments. For instance, given a typical
- situation of all read-only sections placed in one segment and
- following that a segment containing all the read-write
- sections, we wouldn't want to place an orphan read/write
- section before or amongst the read-only ones. */
- if (add.head != NULL)
- {
- lang_output_section_statement_type *newly_added_os;
-
- if (place->stmt == NULL)
- {
- lang_statement_union_type **where = insert_os_after (after);
-
- *add.tail = *where;
- *where = add.head;
-
- place->os_tail = &after->next;
- }
- else
- {
- /* Put it after the last orphan statement we added. */
- *add.tail = *place->stmt;
- *place->stmt = add.head;
- }
-
- /* Fix the global list pointer if we happened to tack our
- new list at the tail. */
- if (*stat_ptr->tail == add.head)
- stat_ptr->tail = add.tail;
-
- /* Save the end of this list. */
- place->stmt = add.tail;
-
- /* Do the same for the list of output section statements. */
- newly_added_os = *os_tail;
- *os_tail = NULL;
- newly_added_os->prev = (lang_output_section_statement_type *)
- ((char *) place->os_tail
- - offsetof (lang_output_section_statement_type, next));
- newly_added_os->next = *place->os_tail;
- if (newly_added_os->next != NULL)
- newly_added_os->next->prev = newly_added_os;
- *place->os_tail = newly_added_os;
- place->os_tail = &newly_added_os->next;
-
- /* Fixing the global list pointer here is a little different.
- We added to the list in lang_enter_output_section_statement,
- trimmed off the new output_section_statment above when
- assigning *os_tail = NULL, but possibly added it back in
- the same place when assigning *place->os_tail. */
- if (*os_tail == NULL)
- lang_output_section_statement.tail
- = (lang_statement_union_type **) os_tail;
- }
- }
- return os;
-}
-
-static void
-lang_print_asneeded (void)
-{
- struct asneeded_minfo *m;
-
- if (asneeded_list_head == NULL)
- return;
-
- minfo (_("\nAs-needed library included to satisfy reference by file (symbol)\n\n"));
-
- for (m = asneeded_list_head; m != NULL; m = m->next)
- {
- size_t len;
-
- minfo ("%s", m->soname);
- len = strlen (m->soname);
-
- if (len >= 29)
- {
- print_nl ();
- len = 0;
- }
- while (len < 30)
- {
- print_space ();
- ++len;
- }
-
- if (m->ref != NULL)
- minfo ("%B ", m->ref);
- minfo ("(%T)\n", m->name);
- }
-}
-
-static void
-lang_map_flags (flagword flag)
-{
- if (flag & SEC_ALLOC)
- minfo ("a");
-
- if (flag & SEC_CODE)
- minfo ("x");
-
- if (flag & SEC_READONLY)
- minfo ("r");
-
- if (flag & SEC_DATA)
- minfo ("w");
-
- if (flag & SEC_LOAD)
- minfo ("l");
-}
-
-void
-lang_map (void)
-{
- lang_memory_region_type *m;
- bfd_boolean dis_header_printed = FALSE;
-
- LANG_FOR_EACH_INPUT_STATEMENT (file)
- {
- asection *s;
-
- if ((file->the_bfd->flags & (BFD_LINKER_CREATED | DYNAMIC)) != 0
- || file->flags.just_syms)
- continue;
-
- for (s = file->the_bfd->sections; s != NULL; s = s->next)
- if ((s->output_section == NULL
- || s->output_section->owner != link_info.output_bfd)
- && (s->flags & (SEC_LINKER_CREATED | SEC_KEEP)) == 0)
- {
- if (!dis_header_printed)
- {
- fprintf (config.map_file, _("\nDiscarded input sections\n\n"));
- dis_header_printed = TRUE;
- }
-
- print_input_section (s, TRUE);
- }
- }
-
- minfo (_("\nMemory Configuration\n\n"));
- fprintf (config.map_file, "%-16s %-18s %-18s %s\n",
- _("Name"), _("Origin"), _("Length"), _("Attributes"));
-
- for (m = lang_memory_region_list; m != NULL; m = m->next)
- {
- char buf[100];
- int len;
-
- fprintf (config.map_file, "%-16s ", m->name_list.name);
-
- sprintf_vma (buf, m->origin);
- minfo ("0x%s ", buf);
- len = strlen (buf);
- while (len < 16)
- {
- print_space ();
- ++len;
- }
-
- minfo ("0x%V", m->length);
- if (m->flags || m->not_flags)
- {
-#ifndef BFD64
- minfo (" ");
-#endif
- if (m->flags)
- {
- print_space ();
- lang_map_flags (m->flags);
- }
-
- if (m->not_flags)
- {
- minfo (" !");
- lang_map_flags (m->not_flags);
- }
- }
-
- print_nl ();
- }
-
- fprintf (config.map_file, _("\nLinker script and memory map\n\n"));
-
- if (!link_info.reduce_memory_overheads)
- {
- obstack_begin (&map_obstack, 1000);
- bfd_link_hash_traverse (link_info.hash, sort_def_symbol, 0);
- }
- lang_statement_iteration++;
- print_statements ();
-
- ldemul_extra_map_file_text (link_info.output_bfd, &link_info,
- config.map_file);
-}
-
-static bfd_boolean
-sort_def_symbol (struct bfd_link_hash_entry *hash_entry,
- void *info ATTRIBUTE_UNUSED)
-{
- if ((hash_entry->type == bfd_link_hash_defined
- || hash_entry->type == bfd_link_hash_defweak)
- && hash_entry->u.def.section->owner != link_info.output_bfd
- && hash_entry->u.def.section->owner != NULL)
- {
- input_section_userdata_type *ud;
- struct map_symbol_def *def;
-
- ud = ((input_section_userdata_type *)
- get_userdata (hash_entry->u.def.section));
- if (!ud)
- {
- ud = (input_section_userdata_type *) stat_alloc (sizeof (*ud));
- get_userdata (hash_entry->u.def.section) = ud;
- ud->map_symbol_def_tail = &ud->map_symbol_def_head;
- ud->map_symbol_def_count = 0;
- }
- else if (!ud->map_symbol_def_tail)
- ud->map_symbol_def_tail = &ud->map_symbol_def_head;
-
- def = (struct map_symbol_def *) obstack_alloc (&map_obstack, sizeof *def);
- def->entry = hash_entry;
- *(ud->map_symbol_def_tail) = def;
- ud->map_symbol_def_tail = &def->next;
- ud->map_symbol_def_count++;
- }
- return TRUE;
-}
-
-/* Initialize an output section. */
-
-static void
-init_os (lang_output_section_statement_type *s, flagword flags)
-{
- if (strcmp (s->name, DISCARD_SECTION_NAME) == 0)
- einfo (_("%P%F: Illegal use of `%s' section\n"), DISCARD_SECTION_NAME);
-
- if (s->constraint != SPECIAL)
- s->bfd_section = bfd_get_section_by_name (link_info.output_bfd, s->name);
- if (s->bfd_section == NULL)
- s->bfd_section = bfd_make_section_anyway_with_flags (link_info.output_bfd,
- s->name, flags);
- if (s->bfd_section == NULL)
- {
- einfo (_("%P%F: output format %s cannot represent section"
- " called %s: %E\n"),
- link_info.output_bfd->xvec->name, s->name);
- }
- s->bfd_section->output_section = s->bfd_section;
- s->bfd_section->output_offset = 0;
-
- /* Set the userdata of the output section to the output section
- statement to avoid lookup. */
- get_userdata (s->bfd_section) = s;
-
- /* If there is a base address, make sure that any sections it might
- mention are initialized. */
- if (s->addr_tree != NULL)
- exp_init_os (s->addr_tree);
-
- if (s->load_base != NULL)
- exp_init_os (s->load_base);
-
- /* If supplied an alignment, set it. */
- if (s->section_alignment != -1)
- s->bfd_section->alignment_power = s->section_alignment;
-}
-
-/* Make sure that all output sections mentioned in an expression are
- initialized. */
-
-static void
-exp_init_os (etree_type *exp)
-{
- switch (exp->type.node_class)
- {
- case etree_assign:
- case etree_provide:
- case etree_provided:
- exp_init_os (exp->assign.src);
- break;
-
- case etree_binary:
- exp_init_os (exp->binary.lhs);
- exp_init_os (exp->binary.rhs);
- break;
-
- case etree_trinary:
- exp_init_os (exp->trinary.cond);
- exp_init_os (exp->trinary.lhs);
- exp_init_os (exp->trinary.rhs);
- break;
-
- case etree_assert:
- exp_init_os (exp->assert_s.child);
- break;
-
- case etree_unary:
- exp_init_os (exp->unary.child);
- break;
-
- case etree_name:
- switch (exp->type.node_code)
- {
- case ADDR:
- case LOADADDR:
- case SIZEOF:
- {
- lang_output_section_statement_type *os;
-
- os = lang_output_section_find (exp->name.name);
- if (os != NULL && os->bfd_section == NULL)
- init_os (os, 0);
- }
- }
- break;
-
- default:
- break;
- }
-}
-
-static void
-section_already_linked (bfd *abfd, asection *sec, void *data)
-{
- lang_input_statement_type *entry = (lang_input_statement_type *) data;
-
- /* If we are only reading symbols from this object, then we want to
- discard all sections. */
- if (entry->flags.just_syms)
- {
- bfd_link_just_syms (abfd, sec, &link_info);
- return;
- }
-
- /* Deal with SHF_EXCLUDE ELF sections. */
- if (!bfd_link_relocatable (&link_info)
- && (abfd->flags & BFD_PLUGIN) == 0
- && (sec->flags & (SEC_GROUP | SEC_KEEP | SEC_EXCLUDE)) == SEC_EXCLUDE)
- sec->output_section = bfd_abs_section_ptr;
-
- if (!(abfd->flags & DYNAMIC))
- bfd_section_already_linked (abfd, sec, &link_info);
-}
-
-
-/* Returns true if SECTION is one we know will be discarded based on its
- section flags, otherwise returns false. */
-
-static bfd_boolean
-lang_discard_section_p (asection *section)
-{
- bfd_boolean discard;
- flagword flags = section->flags;
-
- /* Discard sections marked with SEC_EXCLUDE. */
- discard = (flags & SEC_EXCLUDE) != 0;
-
- /* Discard the group descriptor sections when we're finally placing the
- sections from within the group. */
- if ((flags & SEC_GROUP) != 0
- && link_info.resolve_section_groups)
- discard = TRUE;
-
- /* Discard debugging sections if we are stripping debugging
- information. */
- if ((link_info.strip == strip_debugger || link_info.strip == strip_all)
- && (flags & SEC_DEBUGGING) != 0)
- discard = TRUE;
-
- return discard;
-}
-
-/* The wild routines.
-
- These expand statements like *(.text) and foo.o to a list of
- explicit actions, like foo.o(.text), bar.o(.text) and
- foo.o(.text, .data). */
-
-/* Add SECTION to the output section OUTPUT. Do this by creating a
- lang_input_section statement which is placed at PTR. */
-
-void
-lang_add_section (lang_statement_list_type *ptr,
- asection *section,
- struct flag_info *sflag_info,
- lang_output_section_statement_type *output)
-{
- flagword flags = section->flags;
-
- bfd_boolean discard;
- lang_input_section_type *new_section;
- bfd *abfd = link_info.output_bfd;
-
- /* Is this section one we know should be discarded? */
- discard = lang_discard_section_p (section);
-
- /* Discard input sections which are assigned to a section named
- DISCARD_SECTION_NAME. */
- if (strcmp (output->name, DISCARD_SECTION_NAME) == 0)
- discard = TRUE;
-
- if (discard)
- {
- if (section->output_section == NULL)
- {
- /* This prevents future calls from assigning this section. */
- section->output_section = bfd_abs_section_ptr;
- }
- return;
- }
-
- if (sflag_info)
- {
- bfd_boolean keep;
-
- keep = bfd_lookup_section_flags (&link_info, sflag_info, section);
- if (!keep)
- return;
- }
-
- if (section->output_section != NULL)
- return;
-
- /* We don't copy the SEC_NEVER_LOAD flag from an input section
- to an output section, because we want to be able to include a
- SEC_NEVER_LOAD section in the middle of an otherwise loaded
- section (I don't know why we want to do this, but we do).
- build_link_order in ldwrite.c handles this case by turning
- the embedded SEC_NEVER_LOAD section into a fill. */
- flags &= ~ SEC_NEVER_LOAD;
-
- /* If final link, don't copy the SEC_LINK_ONCE flags, they've
- already been processed. One reason to do this is that on pe
- format targets, .text$foo sections go into .text and it's odd
- to see .text with SEC_LINK_ONCE set. */
- if ((flags & (SEC_LINK_ONCE | SEC_GROUP)) == (SEC_LINK_ONCE | SEC_GROUP))
- {
- if (link_info.resolve_section_groups)
- flags &= ~(SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_RELOC);
- else
- flags &= ~(SEC_LINK_DUPLICATES | SEC_RELOC);
- }
- else if (!bfd_link_relocatable (&link_info))
- flags &= ~(SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_RELOC);
-
- switch (output->sectype)
- {
- case normal_section:
- case overlay_section:
- break;
- case noalloc_section:
- flags &= ~SEC_ALLOC;
- break;
- case noload_section:
- flags &= ~SEC_LOAD;
- flags |= SEC_NEVER_LOAD;
- /* Unfortunately GNU ld has managed to evolve two different
- meanings to NOLOAD in scripts. ELF gets a .bss style noload,
- alloc, no contents section. All others get a noload, noalloc
- section. */
- if (bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour)
- flags &= ~SEC_HAS_CONTENTS;
- else
- flags &= ~SEC_ALLOC;
- break;
- }
-
- if (output->bfd_section == NULL)
- init_os (output, flags);
-
- /* If SEC_READONLY is not set in the input section, then clear
- it from the output section. */
- output->bfd_section->flags &= flags | ~SEC_READONLY;
-
- if (output->bfd_section->linker_has_input)
- {
- /* Only set SEC_READONLY flag on the first input section. */
- flags &= ~ SEC_READONLY;
-
- /* Keep SEC_MERGE and SEC_STRINGS only if they are the same. */
- if ((output->bfd_section->flags & (SEC_MERGE | SEC_STRINGS))
- != (flags & (SEC_MERGE | SEC_STRINGS))
- || ((flags & SEC_MERGE) != 0
- && output->bfd_section->entsize != section->entsize))
- {
- output->bfd_section->flags &= ~ (SEC_MERGE | SEC_STRINGS);
- flags &= ~ (SEC_MERGE | SEC_STRINGS);
- }
- }
- output->bfd_section->flags |= flags;
-
- if (!output->bfd_section->linker_has_input)
- {
- output->bfd_section->linker_has_input = 1;
- /* This must happen after flags have been updated. The output
- section may have been created before we saw its first input
- section, eg. for a data statement. */
- bfd_init_private_section_data (section->owner, section,
- link_info.output_bfd,
- output->bfd_section,
- &link_info);
- if ((flags & SEC_MERGE) != 0)
- output->bfd_section->entsize = section->entsize;
- }
-
- if ((flags & SEC_TIC54X_BLOCK) != 0
- && bfd_get_arch (section->owner) == bfd_arch_tic54x)
- {
- /* FIXME: This value should really be obtained from the bfd... */
- output->block_value = 128;
- }
-
- if (section->alignment_power > output->bfd_section->alignment_power)
- output->bfd_section->alignment_power = section->alignment_power;
-
- section->output_section = output->bfd_section;
-
- if (!map_head_is_link_order)
- {
- asection *s = output->bfd_section->map_tail.s;
- output->bfd_section->map_tail.s = section;
- section->map_head.s = NULL;
- section->map_tail.s = s;
- if (s != NULL)
- s->map_head.s = section;
- else
- output->bfd_section->map_head.s = section;
- }
-
- /* Add a section reference to the list. */
- new_section = new_stat (lang_input_section, ptr);
- new_section->section = section;
-}
-
-/* Handle wildcard sorting. This returns the lang_input_section which
- should follow the one we are going to create for SECTION and FILE,
- based on the sorting requirements of WILD. It returns NULL if the
- new section should just go at the end of the current list. */
-
-static lang_statement_union_type *
-wild_sort (lang_wild_statement_type *wild,
- struct wildcard_list *sec,
- lang_input_statement_type *file,
- asection *section)
-{
- lang_statement_union_type *l;
-
- if (!wild->filenames_sorted
- && (sec == NULL || sec->spec.sorted == none))
- return NULL;
-
- for (l = wild->children.head; l != NULL; l = l->header.next)
- {
- lang_input_section_type *ls;
-
- if (l->header.type != lang_input_section_enum)
- continue;
- ls = &l->input_section;
-
- /* Sorting by filename takes precedence over sorting by section
- name. */
-
- if (wild->filenames_sorted)
- {
- const char *fn, *ln;
- bfd_boolean fa, la;
- int i;
-
- /* The PE support for the .idata section as generated by
- dlltool assumes that files will be sorted by the name of
- the archive and then the name of the file within the
- archive. */
-
- if (file->the_bfd != NULL
- && file->the_bfd->my_archive != NULL)
- {
- fn = bfd_get_filename (file->the_bfd->my_archive);
- fa = TRUE;
- }
- else
- {
- fn = file->filename;
- fa = FALSE;
- }
-
- if (ls->section->owner->my_archive != NULL)
- {
- ln = bfd_get_filename (ls->section->owner->my_archive);
- la = TRUE;
- }
- else
- {
- ln = ls->section->owner->filename;
- la = FALSE;
- }
-
- i = filename_cmp (fn, ln);
- if (i > 0)
- continue;
- else if (i < 0)
- break;
-
- if (fa || la)
- {
- if (fa)
- fn = file->filename;
- if (la)
- ln = ls->section->owner->filename;
-
- i = filename_cmp (fn, ln);
- if (i > 0)
- continue;
- else if (i < 0)
- break;
- }
- }
-
- /* Here either the files are not sorted by name, or we are
- looking at the sections for this file. */
-
- if (sec != NULL
- && sec->spec.sorted != none
- && sec->spec.sorted != by_none)
- if (compare_section (sec->spec.sorted, section, ls->section) < 0)
- break;
- }
-
- return l;
-}
-
-/* Expand a wild statement for a particular FILE. SECTION may be
- NULL, in which case it is a wild card. */
-
-static void
-output_section_callback (lang_wild_statement_type *ptr,
- struct wildcard_list *sec,
- asection *section,
- struct flag_info *sflag_info,
- lang_input_statement_type *file,
- void *output)
-{
- lang_statement_union_type *before;
- lang_output_section_statement_type *os;
-
- os = (lang_output_section_statement_type *) output;
-
- /* Exclude sections that match UNIQUE_SECTION_LIST. */
- if (unique_section_p (section, os))
- return;
-
- before = wild_sort (ptr, sec, file, section);
-
- /* Here BEFORE points to the lang_input_section which
- should follow the one we are about to add. If BEFORE
- is NULL, then the section should just go at the end
- of the current list. */
-
- if (before == NULL)
- lang_add_section (&ptr->children, section, sflag_info, os);
- else
- {
- lang_statement_list_type list;
- lang_statement_union_type **pp;
-
- lang_list_init (&list);
- lang_add_section (&list, section, sflag_info, os);
-
- /* If we are discarding the section, LIST.HEAD will
- be NULL. */
- if (list.head != NULL)
- {
- ASSERT (list.head->header.next == NULL);
-
- for (pp = &ptr->children.head;
- *pp != before;
- pp = &(*pp)->header.next)
- ASSERT (*pp != NULL);
-
- list.head->header.next = *pp;
- *pp = list.head;
- }
- }
-}
-
-/* Check if all sections in a wild statement for a particular FILE
- are readonly. */
-
-static void
-check_section_callback (lang_wild_statement_type *ptr ATTRIBUTE_UNUSED,
- struct wildcard_list *sec ATTRIBUTE_UNUSED,
- asection *section,
- struct flag_info *sflag_info ATTRIBUTE_UNUSED,
- lang_input_statement_type *file ATTRIBUTE_UNUSED,
- void *output)
-{
- lang_output_section_statement_type *os;
-
- os = (lang_output_section_statement_type *) output;
-
- /* Exclude sections that match UNIQUE_SECTION_LIST. */
- if (unique_section_p (section, os))
- return;
-
- if (section->output_section == NULL && (section->flags & SEC_READONLY) == 0)
- os->all_input_readonly = FALSE;
-}
-
-/* This is passed a file name which must have been seen already and
- added to the statement tree. We will see if it has been opened
- already and had its symbols read. If not then we'll read it. */
-
-static lang_input_statement_type *
-lookup_name (const char *name)
-{
- lang_input_statement_type *search;
-
- for (search = (lang_input_statement_type *) input_file_chain.head;
- search != NULL;
- search = (lang_input_statement_type *) search->next_real_file)
- {
- /* Use the local_sym_name as the name of the file that has
- already been loaded as filename might have been transformed
- via the search directory lookup mechanism. */
- const char *filename = search->local_sym_name;
-
- if (filename != NULL
- && filename_cmp (filename, name) == 0)
- break;
- }
-
- if (search == NULL)
- search = new_afile (name, lang_input_file_is_search_file_enum,
- default_target, FALSE);
-
- /* If we have already added this file, or this file is not real
- don't add this file. */
- if (search->flags.loaded || !search->flags.real)
- return search;
-
- if (!load_symbols (search, NULL))
- return NULL;
-
- return search;
-}
-
-/* Save LIST as a list of libraries whose symbols should not be exported. */
-
-struct excluded_lib
-{
- char *name;
- struct excluded_lib *next;
-};
-static struct excluded_lib *excluded_libs;
-
-void
-add_excluded_libs (const char *list)
-{
- const char *p = list, *end;
-
- while (*p != '\0')
- {
- struct excluded_lib *entry;
- end = strpbrk (p, ",:");
- if (end == NULL)
- end = p + strlen (p);
- entry = (struct excluded_lib *) xmalloc (sizeof (*entry));
- entry->next = excluded_libs;
- entry->name = (char *) xmalloc (end - p + 1);
- memcpy (entry->name, p, end - p);
- entry->name[end - p] = '\0';
- excluded_libs = entry;
- if (*end == '\0')
- break;
- p = end + 1;
- }
-}
-
-static void
-check_excluded_libs (bfd *abfd)
-{
- struct excluded_lib *lib = excluded_libs;
-
- while (lib)
- {
- int len = strlen (lib->name);
- const char *filename = lbasename (abfd->filename);
-
- if (strcmp (lib->name, "ALL") == 0)
- {
- abfd->no_export = TRUE;
- return;
- }
-
- if (filename_ncmp (lib->name, filename, len) == 0
- && (filename[len] == '\0'
- || (filename[len] == '.' && filename[len + 1] == 'a'
- && filename[len + 2] == '\0')))
- {
- abfd->no_export = TRUE;
- return;
- }
-
- lib = lib->next;
- }
-}
-
-/* Get the symbols for an input file. */
-
-bfd_boolean
-load_symbols (lang_input_statement_type *entry,
- lang_statement_list_type *place)
-{
- char **matching;
-
- if (entry->flags.loaded)
- return TRUE;
-
- ldfile_open_file (entry);
-
- /* Do not process further if the file was missing. */
- if (entry->flags.missing_file)
- return TRUE;
-
- if (!bfd_check_format (entry->the_bfd, bfd_archive)
- && !bfd_check_format_matches (entry->the_bfd, bfd_object, &matching))
- {
- bfd_error_type err;
- struct lang_input_statement_flags save_flags;
- extern FILE *yyin;
-
- err = bfd_get_error ();
-
- /* See if the emulation has some special knowledge. */
- if (ldemul_unrecognized_file (entry))
- return TRUE;
-
- if (err == bfd_error_file_ambiguously_recognized)
- {
- char **p;
-
- einfo (_("%B: file not recognized: %E\n"), entry->the_bfd);
- einfo (_("%B: matching formats:"), entry->the_bfd);
- for (p = matching; *p != NULL; p++)
- einfo (" %s", *p);
- einfo ("%F\n");
- }
- else if (err != bfd_error_file_not_recognized
- || place == NULL)
- einfo (_("%F%B: file not recognized: %E\n"), entry->the_bfd);
-
- bfd_close (entry->the_bfd);
- entry->the_bfd = NULL;
-
- /* Try to interpret the file as a linker script. */
- save_flags = input_flags;
- ldfile_open_command_file (entry->filename);
-
- push_stat_ptr (place);
- input_flags.add_DT_NEEDED_for_regular
- = entry->flags.add_DT_NEEDED_for_regular;
- input_flags.add_DT_NEEDED_for_dynamic
- = entry->flags.add_DT_NEEDED_for_dynamic;
- input_flags.whole_archive = entry->flags.whole_archive;
- input_flags.dynamic = entry->flags.dynamic;
-
- ldfile_assumed_script = TRUE;
- parser_input = input_script;
- yyparse ();
- ldfile_assumed_script = FALSE;
-
- /* missing_file is sticky. sysrooted will already have been
- restored when seeing EOF in yyparse, but no harm to restore
- again. */
- save_flags.missing_file |= input_flags.missing_file;
- input_flags = save_flags;
- pop_stat_ptr ();
- fclose (yyin);
- yyin = NULL;
- entry->flags.loaded = TRUE;
-
- return TRUE;
- }
-
- if (ldemul_recognized_file (entry))
- return TRUE;
-
- /* We don't call ldlang_add_file for an archive. Instead, the
- add_symbols entry point will call ldlang_add_file, via the
- add_archive_element callback, for each element of the archive
- which is used. */
- switch (bfd_get_format (entry->the_bfd))
- {
- default:
- break;
-
- case bfd_object:
- if (!entry->flags.reload)
- ldlang_add_file (entry);
- if (trace_files || verbose)
- info_msg ("%I\n", entry);
- break;
-
- case bfd_archive:
- check_excluded_libs (entry->the_bfd);
-
- entry->the_bfd->usrdata = entry;
- if (entry->flags.whole_archive)
- {
- bfd *member = NULL;
- bfd_boolean loaded = TRUE;
-
- for (;;)
- {
- bfd *subsbfd;
- member = bfd_openr_next_archived_file (entry->the_bfd, member);
-
- if (member == NULL)
- break;
-
- if (!bfd_check_format (member, bfd_object))
- {
- einfo (_("%F%B: member %B in archive is not an object\n"),
- entry->the_bfd, member);
- loaded = FALSE;
- }
-
- subsbfd = member;
- if (!(*link_info.callbacks
- ->add_archive_element) (&link_info, member,
- "--whole-archive", &subsbfd))
- abort ();
-
- /* Potentially, the add_archive_element hook may have set a
- substitute BFD for us. */
- if (!bfd_link_add_symbols (subsbfd, &link_info))
- {
- einfo (_("%F%B: error adding symbols: %E\n"), member);
- loaded = FALSE;
- }
- }
-
- entry->flags.loaded = loaded;
- return loaded;
- }
- break;
- }
-
- if (bfd_link_add_symbols (entry->the_bfd, &link_info))
- entry->flags.loaded = TRUE;
- else
- einfo (_("%F%B: error adding symbols: %E\n"), entry->the_bfd);
-
- return entry->flags.loaded;
-}
-
-/* Handle a wild statement. S->FILENAME or S->SECTION_LIST or both
- may be NULL, indicating that it is a wildcard. Separate
- lang_input_section statements are created for each part of the
- expansion; they are added after the wild statement S. OUTPUT is
- the output section. */
-
-static void
-wild (lang_wild_statement_type *s,
- const char *target ATTRIBUTE_UNUSED,
- lang_output_section_statement_type *output)
-{
- struct wildcard_list *sec;
-
- if (s->handler_data[0]
- && s->handler_data[0]->spec.sorted == by_name
- && !s->filenames_sorted)
- {
- lang_section_bst_type *tree;
-
- walk_wild (s, output_section_callback_fast, output);
-
- tree = s->tree;
- if (tree)
- {
- output_section_callback_tree_to_list (s, tree, output);
- s->tree = NULL;
- }
- }
- else
- walk_wild (s, output_section_callback, output);
-
- if (default_common_section == NULL)
- for (sec = s->section_list; sec != NULL; sec = sec->next)
- if (sec->spec.name != NULL && strcmp (sec->spec.name, "COMMON") == 0)
- {
- /* Remember the section that common is going to in case we
- later get something which doesn't know where to put it. */
- default_common_section = output;
- break;
- }
-}
-
-/* Return TRUE iff target is the sought target. */
-
-static int
-get_target (const bfd_target *target, void *data)
-{
- const char *sought = (const char *) data;
-
- return strcmp (target->name, sought) == 0;
-}
-
-/* Like strcpy() but convert to lower case as well. */
-
-static void
-stricpy (char *dest, char *src)
-{
- char c;
-
- while ((c = *src++) != 0)
- *dest++ = TOLOWER (c);
-
- *dest = 0;
-}
-
-/* Remove the first occurrence of needle (if any) in haystack
- from haystack. */
-
-static void
-strcut (char *haystack, char *needle)
-{
- haystack = strstr (haystack, needle);
-
- if (haystack)
- {
- char *src;
-
- for (src = haystack + strlen (needle); *src;)
- *haystack++ = *src++;
-
- *haystack = 0;
- }
-}
-
-/* Compare two target format name strings.
- Return a value indicating how "similar" they are. */
-
-static int
-name_compare (char *first, char *second)
-{
- char *copy1;
- char *copy2;
- int result;
-
- copy1 = (char *) xmalloc (strlen (first) + 1);
- copy2 = (char *) xmalloc (strlen (second) + 1);
-
- /* Convert the names to lower case. */
- stricpy (copy1, first);
- stricpy (copy2, second);
-
- /* Remove size and endian strings from the name. */
- strcut (copy1, "big");
- strcut (copy1, "little");
- strcut (copy2, "big");
- strcut (copy2, "little");
-
- /* Return a value based on how many characters match,
- starting from the beginning. If both strings are
- the same then return 10 * their length. */
- for (result = 0; copy1[result] == copy2[result]; result++)
- if (copy1[result] == 0)
- {
- result *= 10;
- break;
- }
-
- free (copy1);
- free (copy2);
-
- return result;
-}
-
-/* Set by closest_target_match() below. */
-static const bfd_target *winner;
-
-/* Scan all the valid bfd targets looking for one that has the endianness
- requirement that was specified on the command line, and is the nearest
- match to the original output target. */
-
-static int
-closest_target_match (const bfd_target *target, void *data)
-{
- const bfd_target *original = (const bfd_target *) data;
-
- if (command_line.endian == ENDIAN_BIG
- && target->byteorder != BFD_ENDIAN_BIG)
- return 0;
-
- if (command_line.endian == ENDIAN_LITTLE
- && target->byteorder != BFD_ENDIAN_LITTLE)
- return 0;
-
- /* Must be the same flavour. */
- if (target->flavour != original->flavour)
- return 0;
-
- /* Ignore generic big and little endian elf vectors. */
- if (strcmp (target->name, "elf32-big") == 0
- || strcmp (target->name, "elf64-big") == 0
- || strcmp (target->name, "elf32-little") == 0
- || strcmp (target->name, "elf64-little") == 0)
- return 0;
-
- /* If we have not found a potential winner yet, then record this one. */
- if (winner == NULL)
- {
- winner = target;
- return 0;
- }
-
- /* Oh dear, we now have two potential candidates for a successful match.
- Compare their names and choose the better one. */
- if (name_compare (target->name, original->name)
- > name_compare (winner->name, original->name))
- winner = target;
-
- /* Keep on searching until wqe have checked them all. */
- return 0;
-}
-
-/* Return the BFD target format of the first input file. */
-
-static char *
-get_first_input_target (void)
-{
- char *target = NULL;
-
- LANG_FOR_EACH_INPUT_STATEMENT (s)
- {
- if (s->header.type == lang_input_statement_enum
- && s->flags.real)
- {
- ldfile_open_file (s);
-
- if (s->the_bfd != NULL
- && bfd_check_format (s->the_bfd, bfd_object))
- {
- target = bfd_get_target (s->the_bfd);
-
- if (target != NULL)
- break;
- }
- }
- }
-
- return target;
-}
-
-const char *
-lang_get_output_target (void)
-{
- const char *target;
-
- /* Has the user told us which output format to use? */
- if (output_target != NULL)
- return output_target;
-
- /* No - has the current target been set to something other than
- the default? */
- if (current_target != default_target && current_target != NULL)
- return current_target;
-
- /* No - can we determine the format of the first input file? */
- target = get_first_input_target ();
- if (target != NULL)
- return target;
-
- /* Failed - use the default output target. */
- return default_target;
-}
-
-/* Open the output file. */
-
-static void
-open_output (const char *name)
-{
- output_target = lang_get_output_target ();
-
- /* Has the user requested a particular endianness on the command
- line? */
- if (command_line.endian != ENDIAN_UNSET)
- {
- /* Get the chosen target. */
- const bfd_target *target
- = bfd_iterate_over_targets (get_target, (void *) output_target);
-
- /* If the target is not supported, we cannot do anything. */
- if (target != NULL)
- {
- enum bfd_endian desired_endian;
-
- if (command_line.endian == ENDIAN_BIG)
- desired_endian = BFD_ENDIAN_BIG;
- else
- desired_endian = BFD_ENDIAN_LITTLE;
-
- /* See if the target has the wrong endianness. This should
- not happen if the linker script has provided big and
- little endian alternatives, but some scrips don't do
- this. */
- if (target->byteorder != desired_endian)
- {
- /* If it does, then see if the target provides
- an alternative with the correct endianness. */
- if (target->alternative_target != NULL
- && (target->alternative_target->byteorder == desired_endian))
- output_target = target->alternative_target->name;
- else
- {
- /* Try to find a target as similar as possible to
- the default target, but which has the desired
- endian characteristic. */
- bfd_iterate_over_targets (closest_target_match,
- (void *) target);
-
- /* Oh dear - we could not find any targets that
- satisfy our requirements. */
- if (winner == NULL)
- einfo (_("%P: warning: could not find any targets"
- " that match endianness requirement\n"));
- else
- output_target = winner->name;
- }
- }
- }
- }
-
- link_info.output_bfd = bfd_openw (name, output_target);
-
- if (link_info.output_bfd == NULL)
- {
- if (bfd_get_error () == bfd_error_invalid_target)
- einfo (_("%P%F: target %s not found\n"), output_target);
-
- einfo (_("%P%F: cannot open output file %s: %E\n"), name);
- }
-
- delete_output_file_on_failure = TRUE;
-
- if (!bfd_set_format (link_info.output_bfd, bfd_object))
- einfo (_("%P%F:%s: can not make object file: %E\n"), name);
- if (!bfd_set_arch_mach (link_info.output_bfd,
- ldfile_output_architecture,
- ldfile_output_machine))
- einfo (_("%P%F:%s: can not set architecture: %E\n"), name);
-
- link_info.hash = bfd_link_hash_table_create (link_info.output_bfd);
- if (link_info.hash == NULL)
- einfo (_("%P%F: can not create hash table: %E\n"));
-
- bfd_set_gp_size (link_info.output_bfd, g_switch_value);
-}
-
-static void
-ldlang_open_output (lang_statement_union_type *statement)
-{
- switch (statement->header.type)
- {
- case lang_output_statement_enum:
- ASSERT (link_info.output_bfd == NULL);
- open_output (statement->output_statement.name);
- ldemul_set_output_arch ();
- if (config.magic_demand_paged
- && !bfd_link_relocatable (&link_info))
- link_info.output_bfd->flags |= D_PAGED;
- else
- link_info.output_bfd->flags &= ~D_PAGED;
- if (config.text_read_only)
- link_info.output_bfd->flags |= WP_TEXT;
- else
- link_info.output_bfd->flags &= ~WP_TEXT;
- if (link_info.traditional_format)
- link_info.output_bfd->flags |= BFD_TRADITIONAL_FORMAT;
- else
- link_info.output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT;
- break;
-
- case lang_target_statement_enum:
- current_target = statement->target_statement.target;
- break;
- default:
- break;
- }
-}
-
-static void
-init_opb (void)
-{
- unsigned x = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
- ldfile_output_machine);
- opb_shift = 0;
- if (x > 1)
- while ((x & 1) == 0)
- {
- x >>= 1;
- ++opb_shift;
- }
- ASSERT (x == 1);
-}
-
-/* Open all the input files. */
-
-enum open_bfd_mode
- {
- OPEN_BFD_NORMAL = 0,
- OPEN_BFD_FORCE = 1,
- OPEN_BFD_RESCAN = 2
- };
-#ifdef ENABLE_PLUGINS
-static lang_input_statement_type *plugin_insert = NULL;
-#endif
-
-static void
-open_input_bfds (lang_statement_union_type *s, enum open_bfd_mode mode)
-{
- for (; s != NULL; s = s->header.next)
- {
- switch (s->header.type)
- {
- case lang_constructors_statement_enum:
- open_input_bfds (constructor_list.head, mode);
- break;
- case lang_output_section_statement_enum:
- open_input_bfds (s->output_section_statement.children.head, mode);
- break;
- case lang_wild_statement_enum:
- /* Maybe we should load the file's symbols. */
- if ((mode & OPEN_BFD_RESCAN) == 0
- && s->wild_statement.filename
- && !wildcardp (s->wild_statement.filename)
- && !archive_path (s->wild_statement.filename))
- lookup_name (s->wild_statement.filename);
- open_input_bfds (s->wild_statement.children.head, mode);
- break;
- case lang_group_statement_enum:
- {
- struct bfd_link_hash_entry *undefs;
-
- /* We must continually search the entries in the group
- until no new symbols are added to the list of undefined
- symbols. */
-
- do
- {
- undefs = link_info.hash->undefs_tail;
- open_input_bfds (s->group_statement.children.head,
- mode | OPEN_BFD_FORCE);
- }
- while (undefs != link_info.hash->undefs_tail);
- }
- break;
- case lang_target_statement_enum:
- current_target = s->target_statement.target;
- break;
- case lang_input_statement_enum:
- if (s->input_statement.flags.real)
- {
- lang_statement_union_type **os_tail;
- lang_statement_list_type add;
- bfd *abfd;
-
- s->input_statement.target = current_target;
-
- /* If we are being called from within a group, and this
- is an archive which has already been searched, then
- force it to be researched unless the whole archive
- has been loaded already. Do the same for a rescan.
- Likewise reload --as-needed shared libs. */
- if (mode != OPEN_BFD_NORMAL
-#ifdef ENABLE_PLUGINS
- && ((mode & OPEN_BFD_RESCAN) == 0
- || plugin_insert == NULL)
-#endif
- && s->input_statement.flags.loaded
- && (abfd = s->input_statement.the_bfd) != NULL
- && ((bfd_get_format (abfd) == bfd_archive
- && !s->input_statement.flags.whole_archive)
- || (bfd_get_format (abfd) == bfd_object
- && ((abfd->flags) & DYNAMIC) != 0
- && s->input_statement.flags.add_DT_NEEDED_for_regular
- && bfd_get_flavour (abfd) == bfd_target_elf_flavour
- && (elf_dyn_lib_class (abfd) & DYN_AS_NEEDED) != 0)))
- {
- s->input_statement.flags.loaded = FALSE;
- s->input_statement.flags.reload = TRUE;
- }
-
- os_tail = lang_output_section_statement.tail;
- lang_list_init (&add);
-
- if (!load_symbols (&s->input_statement, &add))
- config.make_executable = FALSE;
-
- if (add.head != NULL)
- {
- /* If this was a script with output sections then
- tack any added statements on to the end of the
- list. This avoids having to reorder the output
- section statement list. Very likely the user
- forgot -T, and whatever we do here will not meet
- naive user expectations. */
- if (os_tail != lang_output_section_statement.tail)
- {
- einfo (_("%P: warning: %s contains output sections;"
- " did you forget -T?\n"),
- s->input_statement.filename);
- *stat_ptr->tail = add.head;
- stat_ptr->tail = add.tail;
- }
- else
- {
- *add.tail = s->header.next;
- s->header.next = add.head;
- }
- }
- }
-#ifdef ENABLE_PLUGINS
- /* If we have found the point at which a plugin added new
- files, clear plugin_insert to enable archive rescan. */
- if (&s->input_statement == plugin_insert)
- plugin_insert = NULL;
-#endif
- break;
- case lang_assignment_statement_enum:
- if (s->assignment_statement.exp->type.node_class != etree_assert)
- exp_fold_tree_no_dot (s->assignment_statement.exp);
- break;
- default:
- break;
- }
- }
-
- /* Exit if any of the files were missing. */
- if (input_flags.missing_file)
- einfo ("%F");
-}
-
-/* Add the supplied name to the symbol table as an undefined reference.
- This is a two step process as the symbol table doesn't even exist at
- the time the ld command line is processed. First we put the name
- on a list, then, once the output file has been opened, transfer the
- name to the symbol table. */
-
-typedef struct bfd_sym_chain ldlang_undef_chain_list_type;
-
-#define ldlang_undef_chain_list_head entry_symbol.next
-
-void
-ldlang_add_undef (const char *const name, bfd_boolean cmdline)
-{
- ldlang_undef_chain_list_type *new_undef;
-
- undef_from_cmdline = undef_from_cmdline || cmdline;
- new_undef = (ldlang_undef_chain_list_type *) stat_alloc (sizeof (*new_undef));
- new_undef->next = ldlang_undef_chain_list_head;
- ldlang_undef_chain_list_head = new_undef;
-
- new_undef->name = xstrdup (name);
-
- if (link_info.output_bfd != NULL)
- insert_undefined (new_undef->name);
-}
-
-/* Insert NAME as undefined in the symbol table. */
-
-static void
-insert_undefined (const char *name)
-{
- struct bfd_link_hash_entry *h;
-
- h = bfd_link_hash_lookup (link_info.hash, name, TRUE, FALSE, TRUE);
- if (h == NULL)
- einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
- if (h->type == bfd_link_hash_new)
- {
- h->type = bfd_link_hash_undefined;
- h->u.undef.abfd = NULL;
- if (is_elf_hash_table (link_info.hash))
- ((struct elf_link_hash_entry *) h)->mark = 1;
- bfd_link_add_undef (link_info.hash, h);
- }
-}
-
-/* Run through the list of undefineds created above and place them
- into the linker hash table as undefined symbols belonging to the
- script file. */
-
-static void
-lang_place_undefineds (void)
-{
- ldlang_undef_chain_list_type *ptr;
-
- for (ptr = ldlang_undef_chain_list_head; ptr != NULL; ptr = ptr->next)
- insert_undefined (ptr->name);
-}
-
-/* Structure used to build the list of symbols that the user has required
- be defined. */
-
-struct require_defined_symbol
-{
- const char *name;
- struct require_defined_symbol *next;
-};
-
-/* The list of symbols that the user has required be defined. */
-
-static struct require_defined_symbol *require_defined_symbol_list;
-
-/* Add a new symbol NAME to the list of symbols that are required to be
- defined. */
-
-void
-ldlang_add_require_defined (const char *const name)
-{
- struct require_defined_symbol *ptr;
-
- ldlang_add_undef (name, TRUE);
- ptr = (struct require_defined_symbol *) stat_alloc (sizeof (*ptr));
- ptr->next = require_defined_symbol_list;
- ptr->name = strdup (name);
- require_defined_symbol_list = ptr;
-}
-
-/* Check that all symbols the user required to be defined, are defined,
- raise an error if we find a symbol that is not defined. */
-
-static void
-ldlang_check_require_defined_symbols (void)
-{
- struct require_defined_symbol *ptr;
-
- for (ptr = require_defined_symbol_list; ptr != NULL; ptr = ptr->next)
- {
- struct bfd_link_hash_entry *h;
-
- h = bfd_link_hash_lookup (link_info.hash, ptr->name,
- FALSE, FALSE, TRUE);
- if (h == NULL
- || (h->type != bfd_link_hash_defined
- && h->type != bfd_link_hash_defweak))
- einfo(_("%P%X: required symbol `%s' not defined\n"), ptr->name);
- }
-}
-
-/* Check for all readonly or some readwrite sections. */
-
-static void
-check_input_sections
- (lang_statement_union_type *s,
- lang_output_section_statement_type *output_section_statement)
-{
- for (; s != (lang_statement_union_type *) NULL; s = s->header.next)
- {
- switch (s->header.type)
- {
- case lang_wild_statement_enum:
- walk_wild (&s->wild_statement, check_section_callback,
- output_section_statement);
- if (!output_section_statement->all_input_readonly)
- return;
- break;
- case lang_constructors_statement_enum:
- check_input_sections (constructor_list.head,
- output_section_statement);
- if (!output_section_statement->all_input_readonly)
- return;
- break;
- case lang_group_statement_enum:
- check_input_sections (s->group_statement.children.head,
- output_section_statement);
- if (!output_section_statement->all_input_readonly)
- return;
- break;
- default:
- break;
- }
- }
-}
-
-/* Update wildcard statements if needed. */
-
-static void
-update_wild_statements (lang_statement_union_type *s)
-{
- struct wildcard_list *sec;
-
- switch (sort_section)
- {
- default:
- FAIL ();
-
- case none:
- break;
-
- case by_name:
- case by_alignment:
- for (; s != NULL; s = s->header.next)
- {
- switch (s->header.type)
- {
- default:
- break;
-
- case lang_wild_statement_enum:
- for (sec = s->wild_statement.section_list; sec != NULL;
- sec = sec->next)
- {
- switch (sec->spec.sorted)
- {
- case none:
- sec->spec.sorted = sort_section;
- break;
- case by_name:
- if (sort_section == by_alignment)
- sec->spec.sorted = by_name_alignment;
- break;
- case by_alignment:
- if (sort_section == by_name)
- sec->spec.sorted = by_alignment_name;
- break;
- default:
- break;
- }
- }
- break;
-
- case lang_constructors_statement_enum:
- update_wild_statements (constructor_list.head);
- break;
-
- case lang_output_section_statement_enum:
- /* Don't sort .init/.fini sections. */
- if (strcmp (s->output_section_statement.name, ".init") != 0
- && strcmp (s->output_section_statement.name, ".fini") != 0)
- update_wild_statements
- (s->output_section_statement.children.head);
- break;
-
- case lang_group_statement_enum:
- update_wild_statements (s->group_statement.children.head);
- break;
- }
- }
- break;
- }
-}
-
-/* Open input files and attach to output sections. */
-
-static void
-map_input_to_output_sections
- (lang_statement_union_type *s, const char *target,
- lang_output_section_statement_type *os)
-{
- for (; s != NULL; s = s->header.next)
- {
- lang_output_section_statement_type *tos;
- flagword flags;
-
- switch (s->header.type)
- {
- case lang_wild_statement_enum:
- wild (&s->wild_statement, target, os);
- break;
- case lang_constructors_statement_enum:
- map_input_to_output_sections (constructor_list.head,
- target,
- os);
- break;
- case lang_output_section_statement_enum:
- tos = &s->output_section_statement;
- if (tos->constraint != 0)
- {
- if (tos->constraint != ONLY_IF_RW
- && tos->constraint != ONLY_IF_RO)
- break;
- tos->all_input_readonly = TRUE;
- check_input_sections (tos->children.head, tos);
- if (tos->all_input_readonly != (tos->constraint == ONLY_IF_RO))
- {
- tos->constraint = -1;
- break;
- }
- }
- map_input_to_output_sections (tos->children.head,
- target,
- tos);
- break;
- case lang_output_statement_enum:
- break;
- case lang_target_statement_enum:
- target = s->target_statement.target;
- break;
- case lang_group_statement_enum:
- map_input_to_output_sections (s->group_statement.children.head,
- target,
- os);
- break;
- case lang_data_statement_enum:
- /* Make sure that any sections mentioned in the expression
- are initialized. */
- exp_init_os (s->data_statement.exp);
- /* The output section gets CONTENTS, ALLOC and LOAD, but
- these may be overridden by the script. */
- flags = SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD;
- switch (os->sectype)
- {
- case normal_section:
- case overlay_section:
- break;
- case noalloc_section:
- flags = SEC_HAS_CONTENTS;
- break;
- case noload_section:
- if (bfd_get_flavour (link_info.output_bfd)
- == bfd_target_elf_flavour)
- flags = SEC_NEVER_LOAD | SEC_ALLOC;
- else
- flags = SEC_NEVER_LOAD | SEC_HAS_CONTENTS;
- break;
- }
- if (os->bfd_section == NULL)
- init_os (os, flags);
- else
- os->bfd_section->flags |= flags;
- break;
- case lang_input_section_enum:
- break;
- case lang_fill_statement_enum:
- case lang_object_symbols_statement_enum:
- case lang_reloc_statement_enum:
- case lang_padding_statement_enum:
- case lang_input_statement_enum:
- if (os != NULL && os->bfd_section == NULL)
- init_os (os, 0);
- break;
- case lang_assignment_statement_enum:
- if (os != NULL && os->bfd_section == NULL)
- init_os (os, 0);
-
- /* Make sure that any sections mentioned in the assignment
- are initialized. */
- exp_init_os (s->assignment_statement.exp);
- break;
- case lang_address_statement_enum:
- /* Mark the specified section with the supplied address.
- If this section was actually a segment marker, then the
- directive is ignored if the linker script explicitly
- processed the segment marker. Originally, the linker
- treated segment directives (like -Ttext on the
- command-line) as section directives. We honor the
- section directive semantics for backwards compatibility;
- linker scripts that do not specifically check for
- SEGMENT_START automatically get the old semantics. */
- if (!s->address_statement.segment
- || !s->address_statement.segment->used)
- {
- const char *name = s->address_statement.section_name;
-
- /* Create the output section statement here so that
- orphans with a set address will be placed after other
- script sections. If we let the orphan placement code
- place them in amongst other sections then the address
- will affect following script sections, which is
- likely to surprise naive users. */
- tos = lang_output_section_statement_lookup (name, 0, TRUE);
- tos->addr_tree = s->address_statement.address;
- if (tos->bfd_section == NULL)
- init_os (tos, 0);
- }
- break;
- case lang_insert_statement_enum:
- break;
- }
- }
-}
-
-/* An insert statement snips out all the linker statements from the
- start of the list and places them after the output section
- statement specified by the insert. This operation is complicated
- by the fact that we keep a doubly linked list of output section
- statements as well as the singly linked list of all statements. */
-
-static void
-process_insert_statements (void)
-{
- lang_statement_union_type **s;
- lang_output_section_statement_type *first_os = NULL;
- lang_output_section_statement_type *last_os = NULL;
- lang_output_section_statement_type *os;
-
- /* "start of list" is actually the statement immediately after
- the special abs_section output statement, so that it isn't
- reordered. */
- s = &lang_output_section_statement.head;
- while (*(s = &(*s)->header.next) != NULL)
- {
- if ((*s)->header.type == lang_output_section_statement_enum)
- {
- /* Keep pointers to the first and last output section
- statement in the sequence we may be about to move. */
- os = &(*s)->output_section_statement;
-
- ASSERT (last_os == NULL || last_os->next == os);
- last_os = os;
-
- /* Set constraint negative so that lang_output_section_find
- won't match this output section statement. At this
- stage in linking constraint has values in the range
- [-1, ONLY_IN_RW]. */
- last_os->constraint = -2 - last_os->constraint;
- if (first_os == NULL)
- first_os = last_os;
- }
- else if ((*s)->header.type == lang_insert_statement_enum)
- {
- lang_insert_statement_type *i = &(*s)->insert_statement;
- lang_output_section_statement_type *where;
- lang_statement_union_type **ptr;
- lang_statement_union_type *first;
-
- where = lang_output_section_find (i->where);
- if (where != NULL && i->is_before)
- {
- do
- where = where->prev;
- while (where != NULL && where->constraint < 0);
- }
- if (where == NULL)
- {
- einfo (_("%F%P: %s not found for insert\n"), i->where);
- return;
- }
-
- /* Deal with reordering the output section statement list. */
- if (last_os != NULL)
- {
- asection *first_sec, *last_sec;
- struct lang_output_section_statement_struct **next;
-
- /* Snip out the output sections we are moving. */
- first_os->prev->next = last_os->next;
- if (last_os->next == NULL)
- {
- next = &first_os->prev->next;
- lang_output_section_statement.tail
- = (lang_statement_union_type **) next;
- }
- else
- last_os->next->prev = first_os->prev;
- /* Add them in at the new position. */
- last_os->next = where->next;
- if (where->next == NULL)
- {
- next = &last_os->next;
- lang_output_section_statement.tail
- = (lang_statement_union_type **) next;
- }
- else
- where->next->prev = last_os;
- first_os->prev = where;
- where->next = first_os;
-
- /* Move the bfd sections in the same way. */
- first_sec = NULL;
- last_sec = NULL;
- for (os = first_os; os != NULL; os = os->next)
- {
- os->constraint = -2 - os->constraint;
- if (os->bfd_section != NULL
- && os->bfd_section->owner != NULL)
- {
- last_sec = os->bfd_section;
- if (first_sec == NULL)
- first_sec = last_sec;
- }
- if (os == last_os)
- break;
- }
- if (last_sec != NULL)
- {
- asection *sec = where->bfd_section;
- if (sec == NULL)
- sec = output_prev_sec_find (where);
-
- /* The place we want to insert must come after the
- sections we are moving. So if we find no
- section or if the section is the same as our
- last section, then no move is needed. */
- if (sec != NULL && sec != last_sec)
- {
- /* Trim them off. */
- if (first_sec->prev != NULL)
- first_sec->prev->next = last_sec->next;
- else
- link_info.output_bfd->sections = last_sec->next;
- if (last_sec->next != NULL)
- last_sec->next->prev = first_sec->prev;
- else
- link_info.output_bfd->section_last = first_sec->prev;
- /* Add back. */
- last_sec->next = sec->next;
- if (sec->next != NULL)
- sec->next->prev = last_sec;
- else
- link_info.output_bfd->section_last = last_sec;
- first_sec->prev = sec;
- sec->next = first_sec;
- }
- }
-
- first_os = NULL;
- last_os = NULL;
- }
-
- ptr = insert_os_after (where);
- /* Snip everything after the abs_section output statement we
- know is at the start of the list, up to and including
- the insert statement we are currently processing. */
- first = lang_output_section_statement.head->header.next;
- lang_output_section_statement.head->header.next = (*s)->header.next;
- /* Add them back where they belong. */
- *s = *ptr;
- if (*s == NULL)
- statement_list.tail = s;
- *ptr = first;
- s = &lang_output_section_statement.head;
- }
- }
-
- /* Undo constraint twiddling. */
- for (os = first_os; os != NULL; os = os->next)
- {
- os->constraint = -2 - os->constraint;
- if (os == last_os)
- break;
- }
-}
-
-/* An output section might have been removed after its statement was
- added. For example, ldemul_before_allocation can remove dynamic
- sections if they turn out to be not needed. Clean them up here. */
-
-void
-strip_excluded_output_sections (void)
-{
- lang_output_section_statement_type *os;
-
- /* Run lang_size_sections (if not already done). */
- if (expld.phase != lang_mark_phase_enum)
- {
- expld.phase = lang_mark_phase_enum;
- expld.dataseg.phase = exp_seg_none;
- one_lang_size_sections_pass (NULL, FALSE);
- lang_reset_memory_regions ();
- }
-
- for (os = &lang_output_section_statement.head->output_section_statement;
- os != NULL;
- os = os->next)
- {
- asection *output_section;
- bfd_boolean exclude;
-
- if (os->constraint < 0)
- continue;
-
- output_section = os->bfd_section;
- if (output_section == NULL)
- continue;
-
- exclude = (output_section->rawsize == 0
- && (output_section->flags & SEC_KEEP) == 0
- && !bfd_section_removed_from_list (link_info.output_bfd,
- output_section));
-
- /* Some sections have not yet been sized, notably .gnu.version,
- .dynsym, .dynstr and .hash. These all have SEC_LINKER_CREATED
- input sections, so don't drop output sections that have such
- input sections unless they are also marked SEC_EXCLUDE. */
- if (exclude && output_section->map_head.s != NULL)
- {
- asection *s;
-
- for (s = output_section->map_head.s; s != NULL; s = s->map_head.s)
- if ((s->flags & SEC_EXCLUDE) == 0
- && ((s->flags & SEC_LINKER_CREATED) != 0
- || link_info.emitrelocations))
- {
- exclude = FALSE;
- break;
- }
- }
-
- if (exclude)
- {
- /* We don't set bfd_section to NULL since bfd_section of the
- removed output section statement may still be used. */
- if (!os->update_dot)
- os->ignored = TRUE;
- output_section->flags |= SEC_EXCLUDE;
- bfd_section_list_remove (link_info.output_bfd, output_section);
- link_info.output_bfd->section_count--;
- }
- }
-}
-
-/* Called from ldwrite to clear out asection.map_head and
- asection.map_tail for use as link_orders in ldwrite.
- FIXME: Except for sh64elf.em which starts creating link_orders in
- its after_allocation routine so needs to call it early. */
-
-void
-lang_clear_os_map (void)
-{
- lang_output_section_statement_type *os;
-
- if (map_head_is_link_order)
- return;
-
- for (os = &lang_output_section_statement.head->output_section_statement;
- os != NULL;
- os = os->next)
- {
- asection *output_section;
-
- if (os->constraint < 0)
- continue;
-
- output_section = os->bfd_section;
- if (output_section == NULL)
- continue;
-
- /* TODO: Don't just junk map_head.s, turn them into link_orders. */
- output_section->map_head.link_order = NULL;
- output_section->map_tail.link_order = NULL;
- }
-
- /* Stop future calls to lang_add_section from messing with map_head
- and map_tail link_order fields. */
- map_head_is_link_order = TRUE;
-}
-
-static void
-print_output_section_statement
- (lang_output_section_statement_type *output_section_statement)
-{
- asection *section = output_section_statement->bfd_section;
- int len;
-
- if (output_section_statement != abs_output_section)
- {
- minfo ("\n%s", output_section_statement->name);
-
- if (section != NULL)
- {
- print_dot = section->vma;
-
- len = strlen (output_section_statement->name);
- if (len >= SECTION_NAME_MAP_LENGTH - 1)
- {
- print_nl ();
- len = 0;
- }
- while (len < SECTION_NAME_MAP_LENGTH)
- {
- print_space ();
- ++len;
- }
-
- minfo ("0x%V %W", section->vma, TO_ADDR (section->size));
-
- if (section->vma != section->lma)
- minfo (_(" load address 0x%V"), section->lma);
-
- if (output_section_statement->update_dot_tree != NULL)
- exp_fold_tree (output_section_statement->update_dot_tree,
- bfd_abs_section_ptr, &print_dot);
- }
-
- print_nl ();
- }
-
- print_statement_list (output_section_statement->children.head,
- output_section_statement);
-}
-
-static void
-print_assignment (lang_assignment_statement_type *assignment,
- lang_output_section_statement_type *output_section)
-{
- unsigned int i;
- bfd_boolean is_dot;
- etree_type *tree;
- asection *osec;
-
- for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
- print_space ();
-
- if (assignment->exp->type.node_class == etree_assert)
- {
- is_dot = FALSE;
- tree = assignment->exp->assert_s.child;
- }
- else
- {
- const char *dst = assignment->exp->assign.dst;
-
- is_dot = (dst[0] == '.' && dst[1] == 0);
- if (!is_dot)
- expld.assign_name = dst;
- tree = assignment->exp->assign.src;
- }
-
- osec = output_section->bfd_section;
- if (osec == NULL)
- osec = bfd_abs_section_ptr;
-
- if (assignment->exp->type.node_class != etree_provide)
- exp_fold_tree (tree, osec, &print_dot);
- else
- expld.result.valid_p = FALSE;
-
- if (expld.result.valid_p)
- {
- bfd_vma value;
-
- if (assignment->exp->type.node_class == etree_assert
- || is_dot
- || expld.assign_name != NULL)
- {
- value = expld.result.value;
-
- if (expld.result.section != NULL)
- value += expld.result.section->vma;
-
- minfo ("0x%V", value);
- if (is_dot)
- print_dot = value;
- }
- else
- {
- struct bfd_link_hash_entry *h;
-
- h = bfd_link_hash_lookup (link_info.hash, assignment->exp->assign.dst,
- FALSE, FALSE, TRUE);
- if (h)
- {
- value = h->u.def.value;
- value += h->u.def.section->output_section->vma;
- value += h->u.def.section->output_offset;
-
- minfo ("[0x%V]", value);
- }
- else
- minfo ("[unresolved]");
- }
- }
- else
- {
- if (assignment->exp->type.node_class == etree_provide)
- minfo ("[!provide]");
- else
- minfo ("*undef* ");
-#ifdef BFD64
- minfo (" ");
-#endif
- }
- expld.assign_name = NULL;
-
- minfo (" ");
- exp_print_tree (assignment->exp);
- print_nl ();
-}
-
-static void
-print_input_statement (lang_input_statement_type *statm)
-{
- if (statm->filename != NULL
- && (statm->the_bfd == NULL
- || (statm->the_bfd->flags & BFD_LINKER_CREATED) == 0))
- fprintf (config.map_file, "LOAD %s\n", statm->filename);
-}
-
-/* Print all symbols defined in a particular section. This is called
- via bfd_link_hash_traverse, or by print_all_symbols. */
-
-static bfd_boolean
-print_one_symbol (struct bfd_link_hash_entry *hash_entry, void *ptr)
-{
- asection *sec = (asection *) ptr;
-
- if ((hash_entry->type == bfd_link_hash_defined
- || hash_entry->type == bfd_link_hash_defweak)
- && sec == hash_entry->u.def.section)
- {
- int i;
-
- for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
- print_space ();
- minfo ("0x%V ",
- (hash_entry->u.def.value
- + hash_entry->u.def.section->output_offset
- + hash_entry->u.def.section->output_section->vma));
-
- minfo (" %T\n", hash_entry->root.string);
- }
-
- return TRUE;
-}
-
-static int
-hash_entry_addr_cmp (const void *a, const void *b)
-{
- const struct bfd_link_hash_entry *l = *(const struct bfd_link_hash_entry **)a;
- const struct bfd_link_hash_entry *r = *(const struct bfd_link_hash_entry **)b;
-
- if (l->u.def.value < r->u.def.value)
- return -1;
- else if (l->u.def.value > r->u.def.value)
- return 1;
- else
- return 0;
-}
-
-static void
-print_all_symbols (asection *sec)
-{
- input_section_userdata_type *ud
- = (input_section_userdata_type *) get_userdata (sec);
- struct map_symbol_def *def;
- struct bfd_link_hash_entry **entries;
- unsigned int i;
-
- if (!ud)
- return;
-
- *ud->map_symbol_def_tail = 0;
-
- /* Sort the symbols by address. */
- entries = (struct bfd_link_hash_entry **)
- obstack_alloc (&map_obstack,
- ud->map_symbol_def_count * sizeof (*entries));
-
- for (i = 0, def = ud->map_symbol_def_head; def; def = def->next, i++)
- entries[i] = def->entry;
-
- qsort (entries, ud->map_symbol_def_count, sizeof (*entries),
- hash_entry_addr_cmp);
-
- /* Print the symbols. */
- for (i = 0; i < ud->map_symbol_def_count; i++)
- print_one_symbol (entries[i], sec);
-
- obstack_free (&map_obstack, entries);
-}
-
-/* Print information about an input section to the map file. */
-
-static void
-print_input_section (asection *i, bfd_boolean is_discarded)
-{
- bfd_size_type size = i->size;
- int len;
- bfd_vma addr;
-
- init_opb ();
-
- print_space ();
- minfo ("%s", i->name);
-
- len = 1 + strlen (i->name);
- if (len >= SECTION_NAME_MAP_LENGTH - 1)
- {
- print_nl ();
- len = 0;
- }
- while (len < SECTION_NAME_MAP_LENGTH)
- {
- print_space ();
- ++len;
- }
-
- if (i->output_section != NULL
- && i->output_section->owner == link_info.output_bfd)
- addr = i->output_section->vma + i->output_offset;
- else
- {
- addr = print_dot;
- if (!is_discarded)
- size = 0;
- }
-
- minfo ("0x%V %W %B\n", addr, size, i->owner);
-
- if (size != i->rawsize && i->rawsize != 0)
- {
- len = SECTION_NAME_MAP_LENGTH + 3;
-#ifdef BFD64
- len += 16;
-#else
- len += 8;
-#endif
- while (len > 0)
- {
- print_space ();
- --len;
- }
-
- minfo (_("%W (size before relaxing)\n"), i->rawsize);
- }
-
- if (i->output_section != NULL
- && i->output_section->owner == link_info.output_bfd)
- {
- if (link_info.reduce_memory_overheads)
- bfd_link_hash_traverse (link_info.hash, print_one_symbol, i);
- else
- print_all_symbols (i);
-
- /* Update print_dot, but make sure that we do not move it
- backwards - this could happen if we have overlays and a
- later overlay is shorter than an earier one. */
- if (addr + TO_ADDR (size) > print_dot)
- print_dot = addr + TO_ADDR (size);
- }
-}
-
-static void
-print_fill_statement (lang_fill_statement_type *fill)
-{
- size_t size;
- unsigned char *p;
- fputs (" FILL mask 0x", config.map_file);
- for (p = fill->fill->data, size = fill->fill->size; size != 0; p++, size--)
- fprintf (config.map_file, "%02x", *p);
- fputs ("\n", config.map_file);
-}
-
-static void
-print_data_statement (lang_data_statement_type *data)
-{
- int i;
- bfd_vma addr;
- bfd_size_type size;
- const char *name;
-
- init_opb ();
- for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
- print_space ();
-
- addr = data->output_offset;
- if (data->output_section != NULL)
- addr += data->output_section->vma;
-
- switch (data->type)
- {
- default:
- abort ();
- case BYTE:
- size = BYTE_SIZE;
- name = "BYTE";
- break;
- case SHORT:
- size = SHORT_SIZE;
- name = "SHORT";
- break;
- case LONG:
- size = LONG_SIZE;
- name = "LONG";
- break;
- case QUAD:
- size = QUAD_SIZE;
- name = "QUAD";
- break;
- case SQUAD:
- size = QUAD_SIZE;
- name = "SQUAD";
- break;
- }
-
- if (size < TO_SIZE ((unsigned) 1))
- size = TO_SIZE ((unsigned) 1);
- minfo ("0x%V %W %s 0x%v", addr, TO_ADDR (size), name, data->value);
-
- if (data->exp->type.node_class != etree_value)
- {
- print_space ();
- exp_print_tree (data->exp);
- }
-
- print_nl ();
-
- print_dot = addr + TO_ADDR (size);
-}
-
-/* Print an address statement. These are generated by options like
- -Ttext. */
-
-static void
-print_address_statement (lang_address_statement_type *address)
-{
- minfo (_("Address of section %s set to "), address->section_name);
- exp_print_tree (address->address);
- print_nl ();
-}
-
-/* Print a reloc statement. */
-
-static void
-print_reloc_statement (lang_reloc_statement_type *reloc)
-{
- int i;
- bfd_vma addr;
- bfd_size_type size;
-
- init_opb ();
- for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
- print_space ();
-
- addr = reloc->output_offset;
- if (reloc->output_section != NULL)
- addr += reloc->output_section->vma;
-
- size = bfd_get_reloc_size (reloc->howto);
-
- minfo ("0x%V %W RELOC %s ", addr, TO_ADDR (size), reloc->howto->name);
-
- if (reloc->name != NULL)
- minfo ("%s+", reloc->name);
- else
- minfo ("%s+", reloc->section->name);
-
- exp_print_tree (reloc->addend_exp);
-
- print_nl ();
-
- print_dot = addr + TO_ADDR (size);
-}
-
-static void
-print_padding_statement (lang_padding_statement_type *s)
-{
- int len;
- bfd_vma addr;
-
- init_opb ();
- minfo (" *fill*");
-
- len = sizeof " *fill*" - 1;
- while (len < SECTION_NAME_MAP_LENGTH)
- {
- print_space ();
- ++len;
- }
-
- addr = s->output_offset;
- if (s->output_section != NULL)
- addr += s->output_section->vma;
- minfo ("0x%V %W ", addr, TO_ADDR (s->size));
-
- if (s->fill->size != 0)
- {
- size_t size;
- unsigned char *p;
- for (p = s->fill->data, size = s->fill->size; size != 0; p++, size--)
- fprintf (config.map_file, "%02x", *p);
- }
-
- print_nl ();
-
- print_dot = addr + TO_ADDR (s->size);
-}
-
-static void
-print_wild_statement (lang_wild_statement_type *w,
- lang_output_section_statement_type *os)
-{
- struct wildcard_list *sec;
-
- print_space ();
-
- if (w->exclude_name_list)
- {
- name_list *tmp;
- minfo ("EXCLUDE_FILE(%s", w->exclude_name_list->name);
- for (tmp = w->exclude_name_list->next; tmp; tmp = tmp->next)
- minfo (" %s", tmp->name);
- minfo (") ");
- }
-
- if (w->filenames_sorted)
- minfo ("SORT_BY_NAME(");
- if (w->filename != NULL)
- minfo ("%s", w->filename);
- else
- minfo ("*");
- if (w->filenames_sorted)
- minfo (")");
-
- minfo ("(");
- for (sec = w->section_list; sec; sec = sec->next)
- {
- int closing_paren = 0;
-
- switch (sec->spec.sorted)
- {
- case none:
- break;
-
- case by_name:
- minfo ("SORT_BY_NAME(");
- closing_paren = 1;
- break;
-
- case by_alignment:
- minfo ("SORT_BY_ALIGNMENT(");
- closing_paren = 1;
- break;
-
- case by_name_alignment:
- minfo ("SORT_BY_NAME(SORT_BY_ALIGNMENT(");
- closing_paren = 2;
- break;
-
- case by_alignment_name:
- minfo ("SORT_BY_ALIGNMENT(SORT_BY_NAME(");
- closing_paren = 2;
- break;
-
- case by_none:
- minfo ("SORT_NONE(");
- closing_paren = 1;
- break;
-
- case by_init_priority:
- minfo ("SORT_BY_INIT_PRIORITY(");
- closing_paren = 1;
- break;
- }
-
- if (sec->spec.exclude_name_list != NULL)
- {
- name_list *tmp;
- minfo ("EXCLUDE_FILE(%s", sec->spec.exclude_name_list->name);
- for (tmp = sec->spec.exclude_name_list->next; tmp; tmp = tmp->next)
- minfo (" %s", tmp->name);
- minfo (") ");
- }
- if (sec->spec.name != NULL)
- minfo ("%s", sec->spec.name);
- else
- minfo ("*");
- for (;closing_paren > 0; closing_paren--)
- minfo (")");
- if (sec->next)
- minfo (" ");
- }
- minfo (")");
-
- print_nl ();
-
- print_statement_list (w->children.head, os);
-}
-
-/* Print a group statement. */
-
-static void
-print_group (lang_group_statement_type *s,
- lang_output_section_statement_type *os)
-{
- fprintf (config.map_file, "START GROUP\n");
- print_statement_list (s->children.head, os);
- fprintf (config.map_file, "END GROUP\n");
-}
-
-/* Print the list of statements in S.
- This can be called for any statement type. */
-
-static void
-print_statement_list (lang_statement_union_type *s,
- lang_output_section_statement_type *os)
-{
- while (s != NULL)
- {
- print_statement (s, os);
- s = s->header.next;
- }
-}
-
-/* Print the first statement in statement list S.
- This can be called for any statement type. */
-
-static void
-print_statement (lang_statement_union_type *s,
- lang_output_section_statement_type *os)
-{
- switch (s->header.type)
- {
- default:
- fprintf (config.map_file, _("Fail with %d\n"), s->header.type);
- FAIL ();
- break;
- case lang_constructors_statement_enum:
- if (constructor_list.head != NULL)
- {
- if (constructors_sorted)
- minfo (" SORT (CONSTRUCTORS)\n");
- else
- minfo (" CONSTRUCTORS\n");
- print_statement_list (constructor_list.head, os);
- }
- break;
- case lang_wild_statement_enum:
- print_wild_statement (&s->wild_statement, os);
- break;
- case lang_address_statement_enum:
- print_address_statement (&s->address_statement);
- break;
- case lang_object_symbols_statement_enum:
- minfo (" CREATE_OBJECT_SYMBOLS\n");
- break;
- case lang_fill_statement_enum:
- print_fill_statement (&s->fill_statement);
- break;
- case lang_data_statement_enum:
- print_data_statement (&s->data_statement);
- break;
- case lang_reloc_statement_enum:
- print_reloc_statement (&s->reloc_statement);
- break;
- case lang_input_section_enum:
- print_input_section (s->input_section.section, FALSE);
- break;
- case lang_padding_statement_enum:
- print_padding_statement (&s->padding_statement);
- break;
- case lang_output_section_statement_enum:
- print_output_section_statement (&s->output_section_statement);
- break;
- case lang_assignment_statement_enum:
- print_assignment (&s->assignment_statement, os);
- break;
- case lang_target_statement_enum:
- fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target);
- break;
- case lang_output_statement_enum:
- minfo ("OUTPUT(%s", s->output_statement.name);
- if (output_target != NULL)
- minfo (" %s", output_target);
- minfo (")\n");
- break;
- case lang_input_statement_enum:
- print_input_statement (&s->input_statement);
- break;
- case lang_group_statement_enum:
- print_group (&s->group_statement, os);
- break;
- case lang_insert_statement_enum:
- minfo ("INSERT %s %s\n",
- s->insert_statement.is_before ? "BEFORE" : "AFTER",
- s->insert_statement.where);
- break;
- }
-}
-
-static void
-print_statements (void)
-{
- print_statement_list (statement_list.head, abs_output_section);
-}
-
-/* Print the first N statements in statement list S to STDERR.
- If N == 0, nothing is printed.
- If N < 0, the entire list is printed.
- Intended to be called from GDB. */
-
-void
-dprint_statement (lang_statement_union_type *s, int n)
-{
- FILE *map_save = config.map_file;
-
- config.map_file = stderr;
-
- if (n < 0)
- print_statement_list (s, abs_output_section);
- else
- {
- while (s && --n >= 0)
- {
- print_statement (s, abs_output_section);
- s = s->header.next;
- }
- }
-
- config.map_file = map_save;
-}
-
-static void
-insert_pad (lang_statement_union_type **ptr,
- fill_type *fill,
- bfd_size_type alignment_needed,
- asection *output_section,
- bfd_vma dot)
-{
- static fill_type zero_fill;
- lang_statement_union_type *pad = NULL;
-
- if (ptr != &statement_list.head)
- pad = ((lang_statement_union_type *)
- ((char *) ptr - offsetof (lang_statement_union_type, header.next)));
- if (pad != NULL
- && pad->header.type == lang_padding_statement_enum
- && pad->padding_statement.output_section == output_section)
- {
- /* Use the existing pad statement. */
- }
- else if ((pad = *ptr) != NULL
- && pad->header.type == lang_padding_statement_enum
- && pad->padding_statement.output_section == output_section)
- {
- /* Use the existing pad statement. */
- }
- else
- {
- /* Make a new padding statement, linked into existing chain. */
- pad = (lang_statement_union_type *)
- stat_alloc (sizeof (lang_padding_statement_type));
- pad->header.next = *ptr;
- *ptr = pad;
- pad->header.type = lang_padding_statement_enum;
- pad->padding_statement.output_section = output_section;
- if (fill == NULL)
- fill = &zero_fill;
- pad->padding_statement.fill = fill;
- }
- pad->padding_statement.output_offset = dot - output_section->vma;
- pad->padding_statement.size = alignment_needed;
- output_section->size = TO_SIZE (dot + TO_ADDR (alignment_needed)
- - output_section->vma);
-}
-
-/* Work out how much this section will move the dot point. */
-
-static bfd_vma
-size_input_section
- (lang_statement_union_type **this_ptr,
- lang_output_section_statement_type *output_section_statement,
- fill_type *fill,
- bfd_vma dot)
-{
- lang_input_section_type *is = &((*this_ptr)->input_section);
- asection *i = is->section;
- asection *o = output_section_statement->bfd_section;
-
- if (i->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
- i->output_offset = i->vma - o->vma;
- else if (((i->flags & SEC_EXCLUDE) != 0)
- || output_section_statement->ignored)
- i->output_offset = dot - o->vma;
- else
- {
- bfd_size_type alignment_needed;
-
- /* Align this section first to the input sections requirement,
- then to the output section's requirement. If this alignment
- is greater than any seen before, then record it too. Perform
- the alignment by inserting a magic 'padding' statement. */
-
- if (output_section_statement->subsection_alignment != -1)
- i->alignment_power = output_section_statement->subsection_alignment;
-
- if (o->alignment_power < i->alignment_power)
- o->alignment_power = i->alignment_power;
-
- alignment_needed = align_power (dot, i->alignment_power) - dot;
-
- if (alignment_needed != 0)
- {
- insert_pad (this_ptr, fill, TO_SIZE (alignment_needed), o, dot);
- dot += alignment_needed;
- }
-
- /* Remember where in the output section this input section goes. */
- i->output_offset = dot - o->vma;
-
- /* Mark how big the output section must be to contain this now. */
- dot += TO_ADDR (i->size);
- o->size = TO_SIZE (dot - o->vma);
- }
-
- return dot;
-}
-
-struct check_sec
-{
- asection *sec;
- bfd_boolean warned;
-};
-
-static int
-sort_sections_by_lma (const void *arg1, const void *arg2)
-{
- const asection *sec1 = ((const struct check_sec *) arg1)->sec;
- const asection *sec2 = ((const struct check_sec *) arg2)->sec;
-
- if (sec1->lma < sec2->lma)
- return -1;
- else if (sec1->lma > sec2->lma)
- return 1;
- else if (sec1->id < sec2->id)
- return -1;
- else if (sec1->id > sec2->id)
- return 1;
-
- return 0;
-}
-
-static int
-sort_sections_by_vma (const void *arg1, const void *arg2)
-{
- const asection *sec1 = ((const struct check_sec *) arg1)->sec;
- const asection *sec2 = ((const struct check_sec *) arg2)->sec;
-
- if (sec1->vma < sec2->vma)
- return -1;
- else if (sec1->vma > sec2->vma)
- return 1;
- else if (sec1->id < sec2->id)
- return -1;
- else if (sec1->id > sec2->id)
- return 1;
-
- return 0;
-}
-
-#define IS_TBSS(s) \
- ((s->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == SEC_THREAD_LOCAL)
-
-#define IGNORE_SECTION(s) \
- ((s->flags & SEC_ALLOC) == 0 || IS_TBSS (s))
-
-/* Check to see if any allocated sections overlap with other allocated
- sections. This can happen if a linker script specifies the output
- section addresses of the two sections. Also check whether any memory
- region has overflowed. */
-
-static void
-lang_check_section_addresses (void)
-{
- asection *s, *p;
- struct check_sec *sections;
- size_t i, count;
- bfd_vma addr_mask;
- bfd_vma s_start;
- bfd_vma s_end;
- bfd_vma p_start = 0;
- bfd_vma p_end = 0;
- lang_memory_region_type *m;
- bfd_boolean overlays;
-
- /* Detect address space overflow on allocated sections. */
- addr_mask = ((bfd_vma) 1 <<
- (bfd_arch_bits_per_address (link_info.output_bfd) - 1)) - 1;
- addr_mask = (addr_mask << 1) + 1;
- for (s = link_info.output_bfd->sections; s != NULL; s = s->next)
- if ((s->flags & SEC_ALLOC) != 0)
- {
- s_end = (s->vma + s->size) & addr_mask;
- if (s_end != 0 && s_end < (s->vma & addr_mask))
- einfo (_("%X%P: section %s VMA wraps around address space\n"),
- s->name);
- else
- {
- s_end = (s->lma + s->size) & addr_mask;
- if (s_end != 0 && s_end < (s->lma & addr_mask))
- einfo (_("%X%P: section %s LMA wraps around address space\n"),
- s->name);
- }
- }
-
- if (bfd_count_sections (link_info.output_bfd) <= 1)
- return;
-
- count = bfd_count_sections (link_info.output_bfd);
- sections = XNEWVEC (struct check_sec, count);
-
- /* Scan all sections in the output list. */
- count = 0;
- for (s = link_info.output_bfd->sections; s != NULL; s = s->next)
- {
- if (IGNORE_SECTION (s)
- || s->size == 0)
- continue;
-
- sections[count].sec = s;
- sections[count].warned = FALSE;
- count++;
- }
-
- if (count <= 1)
- {
- free (sections);
- return;
- }
-
- qsort (sections, count, sizeof (*sections), sort_sections_by_lma);
-
- /* First check section LMAs. There should be no overlap of LMAs on
- loadable sections, even with overlays. */
- for (p = NULL, i = 0; i < count; i++)
- {
- s = sections[i].sec;
- if ((s->flags & SEC_LOAD) != 0)
- {
- s_start = s->lma;
- s_end = s_start + TO_ADDR (s->size) - 1;
-
- /* Look for an overlap. We have sorted sections by lma, so
- we know that s_start >= p_start. Besides the obvious
- case of overlap when the current section starts before
- the previous one ends, we also must have overlap if the
- previous section wraps around the address space. */
- if (p != NULL
- && (s_start <= p_end
- || p_end < p_start))
- {
- einfo (_("%X%P: section %s LMA [%V,%V]"
- " overlaps section %s LMA [%V,%V]\n"),
- s->name, s_start, s_end, p->name, p_start, p_end);
- sections[i].warned = TRUE;
- }
- p = s;
- p_start = s_start;
- p_end = s_end;
- }
- }
-
- /* If any non-zero size allocated section (excluding tbss) starts at
- exactly the same VMA as another such section, then we have
- overlays. Overlays generated by the OVERLAY keyword will have
- this property. It is possible to intentionally generate overlays
- that fail this test, but it would be unusual. */
- qsort (sections, count, sizeof (*sections), sort_sections_by_vma);
- overlays = FALSE;
- p_start = sections[0].sec->vma;
- for (i = 1; i < count; i++)
- {
- s_start = sections[i].sec->vma;
- if (p_start == s_start)
- {
- overlays = TRUE;
- break;
- }
- p_start = s_start;
- }
-
- /* Now check section VMAs if no overlays were detected. */
- if (!overlays)
- {
- for (p = NULL, i = 0; i < count; i++)
- {
- s = sections[i].sec;
- s_start = s->vma;
- s_end = s_start + TO_ADDR (s->size) - 1;
-
- if (p != NULL
- && !sections[i].warned
- && (s_start <= p_end
- || p_end < p_start))
- einfo (_("%X%P: section %s VMA [%V,%V]"
- " overlaps section %s VMA [%V,%V]\n"),
- s->name, s_start, s_end, p->name, p_start, p_end);
- p = s;
- p_start = s_start;
- p_end = s_end;
- }
- }
-
- free (sections);
-
- /* If any memory region has overflowed, report by how much.
- We do not issue this diagnostic for regions that had sections
- explicitly placed outside their bounds; os_region_check's
- diagnostics are adequate for that case.
-
- FIXME: It is conceivable that m->current - (m->origin + m->length)
- might overflow a 32-bit integer. There is, alas, no way to print
- a bfd_vma quantity in decimal. */
- for (m = lang_memory_region_list; m; m = m->next)
- if (m->had_full_message)
- {
- unsigned long over = m->current - (m->origin + m->length);
- einfo (ngettext ("%X%P: region `%s' overflowed by %lu byte\n",
- "%X%P: region `%s' overflowed by %lu bytes\n",
- over),
- m->name_list.name, over);
- }
-}
-
-/* Make sure the new address is within the region. We explicitly permit the
- current address to be at the exact end of the region when the address is
- non-zero, in case the region is at the end of addressable memory and the
- calculation wraps around. */
-
-static void
-os_region_check (lang_output_section_statement_type *os,
- lang_memory_region_type *region,
- etree_type *tree,
- bfd_vma rbase)
-{
- if ((region->current < region->origin
- || (region->current - region->origin > region->length))
- && ((region->current != region->origin + region->length)
- || rbase == 0))
- {
- if (tree != NULL)
- {
- einfo (_("%X%P: address 0x%v of %B section `%s'"
- " is not within region `%s'\n"),
- region->current,
- os->bfd_section->owner,
- os->bfd_section->name,
- region->name_list.name);
- }
- else if (!region->had_full_message)
- {
- region->had_full_message = TRUE;
-
- einfo (_("%X%P: %B section `%s' will not fit in region `%s'\n"),
- os->bfd_section->owner,
- os->bfd_section->name,
- region->name_list.name);
- }
- }
-}
-
-static void
-ldlang_check_relro_region (lang_statement_union_type *s,
- seg_align_type *seg)
-{
- if (seg->relro == exp_seg_relro_start)
- {
- if (!seg->relro_start_stat)
- seg->relro_start_stat = s;
- else
- {
- ASSERT (seg->relro_start_stat == s);
- }
- }
- else if (seg->relro == exp_seg_relro_end)
- {
- if (!seg->relro_end_stat)
- seg->relro_end_stat = s;
- else
- {
- ASSERT (seg->relro_end_stat == s);
- }
- }
-}
-
-/* Set the sizes for all the output sections. */
-
-static bfd_vma
-lang_size_sections_1
- (lang_statement_union_type **prev,
- lang_output_section_statement_type *output_section_statement,
- fill_type *fill,
- bfd_vma dot,
- bfd_boolean *relax,
- bfd_boolean check_regions)
-{
- lang_statement_union_type *s;
-
- /* Size up the sections from their constituent parts. */
- for (s = *prev; s != NULL; s = s->header.next)
- {
- switch (s->header.type)
- {
- case lang_output_section_statement_enum:
- {
- bfd_vma newdot, after, dotdelta;
- lang_output_section_statement_type *os;
- lang_memory_region_type *r;
- int section_alignment = 0;
-
- os = &s->output_section_statement;
- if (os->constraint == -1)
- break;
-
- /* FIXME: We shouldn't need to zero section vmas for ld -r
- here, in lang_insert_orphan, or in the default linker scripts.
- This is covering for coff backend linker bugs. See PR6945. */
- if (os->addr_tree == NULL
- && bfd_link_relocatable (&link_info)
- && (bfd_get_flavour (link_info.output_bfd)
- == bfd_target_coff_flavour))
- os->addr_tree = exp_intop (0);
- if (os->addr_tree != NULL)
- {
- os->processed_vma = FALSE;
- exp_fold_tree (os->addr_tree, bfd_abs_section_ptr, &dot);
-
- if (expld.result.valid_p)
- {
- dot = expld.result.value;
- if (expld.result.section != NULL)
- dot += expld.result.section->vma;
- }
- else if (expld.phase != lang_mark_phase_enum)
- einfo (_("%F%S: non constant or forward reference"
- " address expression for section %s\n"),
- os->addr_tree, os->name);
- }
-
- if (os->bfd_section == NULL)
- /* This section was removed or never actually created. */
- break;
-
- /* If this is a COFF shared library section, use the size and
- address from the input section. FIXME: This is COFF
- specific; it would be cleaner if there were some other way
- to do this, but nothing simple comes to mind. */
- if (((bfd_get_flavour (link_info.output_bfd)
- == bfd_target_ecoff_flavour)
- || (bfd_get_flavour (link_info.output_bfd)
- == bfd_target_coff_flavour))
- && (os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0)
- {
- asection *input;
-
- if (os->children.head == NULL
- || os->children.head->header.next != NULL
- || (os->children.head->header.type
- != lang_input_section_enum))
- einfo (_("%P%X: Internal error on COFF shared library"
- " section %s\n"), os->name);
-
- input = os->children.head->input_section.section;
- bfd_set_section_vma (os->bfd_section->owner,
- os->bfd_section,
- bfd_section_vma (input->owner, input));
- os->bfd_section->size = input->size;
- break;
- }
-
- newdot = dot;
- dotdelta = 0;
- if (bfd_is_abs_section (os->bfd_section))
- {
- /* No matter what happens, an abs section starts at zero. */
- ASSERT (os->bfd_section->vma == 0);
- }
- else
- {
- if (os->addr_tree == NULL)
- {
- /* No address specified for this section, get one
- from the region specification. */
- if (os->region == NULL
- || ((os->bfd_section->flags & (SEC_ALLOC | SEC_LOAD))
- && os->region->name_list.name[0] == '*'
- && strcmp (os->region->name_list.name,
- DEFAULT_MEMORY_REGION) == 0))
- {
- os->region = lang_memory_default (os->bfd_section);
- }
-
- /* If a loadable section is using the default memory
- region, and some non default memory regions were
- defined, issue an error message. */
- if (!os->ignored
- && !IGNORE_SECTION (os->bfd_section)
- && !bfd_link_relocatable (&link_info)
- && check_regions
- && strcmp (os->region->name_list.name,
- DEFAULT_MEMORY_REGION) == 0
- && lang_memory_region_list != NULL
- && (strcmp (lang_memory_region_list->name_list.name,
- DEFAULT_MEMORY_REGION) != 0
- || lang_memory_region_list->next != NULL)
- && expld.phase != lang_mark_phase_enum)
- {
- /* By default this is an error rather than just a
- warning because if we allocate the section to the
- default memory region we can end up creating an
- excessively large binary, or even seg faulting when
- attempting to perform a negative seek. See
- sources.redhat.com/ml/binutils/2003-04/msg00423.html
- for an example of this. This behaviour can be
- overridden by the using the --no-check-sections
- switch. */
- if (command_line.check_section_addresses)
- einfo (_("%P%F: error: no memory region specified"
- " for loadable section `%s'\n"),
- bfd_get_section_name (link_info.output_bfd,
- os->bfd_section));
- else
- einfo (_("%P: warning: no memory region specified"
- " for loadable section `%s'\n"),
- bfd_get_section_name (link_info.output_bfd,
- os->bfd_section));
- }
-
- newdot = os->region->current;
- section_alignment = os->bfd_section->alignment_power;
- }
- else
- section_alignment = os->section_alignment;
-
- /* Align to what the section needs. */
- if (section_alignment > 0)
- {
- bfd_vma savedot = newdot;
- newdot = align_power (newdot, section_alignment);
-
- dotdelta = newdot - savedot;
- if (dotdelta != 0
- && (config.warn_section_align
- || os->addr_tree != NULL)
- && expld.phase != lang_mark_phase_enum)
- einfo (ngettext ("%P: warning: changing start of "
- "section %s by %lu byte\n",
- "%P: warning: changing start of "
- "section %s by %lu bytes\n",
- (unsigned long) dotdelta),
- os->name, (unsigned long) dotdelta);
- }
-
- bfd_set_section_vma (0, os->bfd_section, newdot);
-
- os->bfd_section->output_offset = 0;
- }
-
- lang_size_sections_1 (&os->children.head, os,
- os->fill, newdot, relax, check_regions);
-
- os->processed_vma = TRUE;
-
- if (bfd_is_abs_section (os->bfd_section) || os->ignored)
- /* Except for some special linker created sections,
- no output section should change from zero size
- after strip_excluded_output_sections. A non-zero
- size on an ignored section indicates that some
- input section was not sized early enough. */
- ASSERT (os->bfd_section->size == 0);
- else
- {
- dot = os->bfd_section->vma;
-
- /* Put the section within the requested block size, or
- align at the block boundary. */
- after = ((dot
- + TO_ADDR (os->bfd_section->size)
- + os->block_value - 1)
- & - (bfd_vma) os->block_value);
-
- os->bfd_section->size = TO_SIZE (after - os->bfd_section->vma);
- }
-
- /* Set section lma. */
- r = os->region;
- if (r == NULL)
- r = lang_memory_region_lookup (DEFAULT_MEMORY_REGION, FALSE);
-
- if (os->load_base)
- {
- bfd_vma lma = exp_get_abs_int (os->load_base, 0, "load base");
- os->bfd_section->lma = lma;
- }
- else if (os->lma_region != NULL)
- {
- bfd_vma lma = os->lma_region->current;
-
- if (os->align_lma_with_input)
- lma += dotdelta;
- else
- {
- /* When LMA_REGION is the same as REGION, align the LMA
- as we did for the VMA, possibly including alignment
- from the bfd section. If a different region, then
- only align according to the value in the output
- statement. */
- if (os->lma_region != os->region)
- section_alignment = os->section_alignment;
- if (section_alignment > 0)
- lma = align_power (lma, section_alignment);
- }
- os->bfd_section->lma = lma;
- }
- else if (r->last_os != NULL
- && (os->bfd_section->flags & SEC_ALLOC) != 0)
- {
- bfd_vma lma;
- asection *last;
-
- last = r->last_os->output_section_statement.bfd_section;
-
- /* A backwards move of dot should be accompanied by
- an explicit assignment to the section LMA (ie.
- os->load_base set) because backwards moves can
- create overlapping LMAs. */
- if (dot < last->vma
- && os->bfd_section->size != 0
- && dot + TO_ADDR (os->bfd_section->size) <= last->vma)
- {
- /* If dot moved backwards then leave lma equal to
- vma. This is the old default lma, which might
- just happen to work when the backwards move is
- sufficiently large. Nag if this changes anything,
- so people can fix their linker scripts. */
-
- if (last->vma != last->lma)
- einfo (_("%P: warning: dot moved backwards "
- "before `%s'\n"), os->name);
- }
- else
- {
- /* If this is an overlay, set the current lma to that
- at the end of the previous section. */
- if (os->sectype == overlay_section)
- lma = last->lma + TO_ADDR (last->size);
-
- /* Otherwise, keep the same lma to vma relationship
- as the previous section. */
- else
- lma = dot + last->lma - last->vma;
-
- if (section_alignment > 0)
- lma = align_power (lma, section_alignment);
- os->bfd_section->lma = lma;
- }
- }
- os->processed_lma = TRUE;
-
- /* Keep track of normal sections using the default
- lma region. We use this to set the lma for
- following sections. Overlays or other linker
- script assignment to lma might mean that the
- default lma == vma is incorrect.
- To avoid warnings about dot moving backwards when using
- -Ttext, don't start tracking sections until we find one
- of non-zero size or with lma set differently to vma.
- Do this tracking before we short-cut the loop so that we
- track changes for the case where the section size is zero,
- but the lma is set differently to the vma. This is
- important, if an orphan section is placed after an
- otherwise empty output section that has an explicit lma
- set, we want that lma reflected in the orphans lma. */
- if (!IGNORE_SECTION (os->bfd_section)
- && (os->bfd_section->size != 0
- || (r->last_os == NULL
- && os->bfd_section->vma != os->bfd_section->lma)
- || (r->last_os != NULL
- && dot >= (r->last_os->output_section_statement
- .bfd_section->vma)))
- && os->lma_region == NULL
- && !bfd_link_relocatable (&link_info))
- r->last_os = s;
-
- if (bfd_is_abs_section (os->bfd_section) || os->ignored)
- break;
-
- /* .tbss sections effectively have zero size. */
- if (!IS_TBSS (os->bfd_section)
- || bfd_link_relocatable (&link_info))
- dotdelta = TO_ADDR (os->bfd_section->size);
- else
- dotdelta = 0;
- dot += dotdelta;
-
- if (os->update_dot_tree != 0)
- exp_fold_tree (os->update_dot_tree, bfd_abs_section_ptr, &dot);
-
- /* Update dot in the region ?
- We only do this if the section is going to be allocated,
- since unallocated sections do not contribute to the region's
- overall size in memory. */
- if (os->region != NULL
- && (os->bfd_section->flags & (SEC_ALLOC | SEC_LOAD)))
- {
- os->region->current = dot;
-
- if (check_regions)
- /* Make sure the new address is within the region. */
- os_region_check (os, os->region, os->addr_tree,
- os->bfd_section->vma);
-
- if (os->lma_region != NULL && os->lma_region != os->region
- && ((os->bfd_section->flags & SEC_LOAD)
- || os->align_lma_with_input))
- {
- os->lma_region->current = os->bfd_section->lma + dotdelta;
-
- if (check_regions)
- os_region_check (os, os->lma_region, NULL,
- os->bfd_section->lma);
- }
- }
- }
- break;
-
- case lang_constructors_statement_enum:
- dot = lang_size_sections_1 (&constructor_list.head,
- output_section_statement,
- fill, dot, relax, check_regions);
- break;
-
- case lang_data_statement_enum:
- {
- unsigned int size = 0;
-
- s->data_statement.output_offset =
- dot - output_section_statement->bfd_section->vma;
- s->data_statement.output_section =
- output_section_statement->bfd_section;
-
- /* We might refer to provided symbols in the expression, and
- need to mark them as needed. */
- exp_fold_tree (s->data_statement.exp, bfd_abs_section_ptr, &dot);
-
- switch (s->data_statement.type)
- {
- default:
- abort ();
- case QUAD:
- case SQUAD:
- size = QUAD_SIZE;
- break;
- case LONG:
- size = LONG_SIZE;
- break;
- case SHORT:
- size = SHORT_SIZE;
- break;
- case BYTE:
- size = BYTE_SIZE;
- break;
- }
- if (size < TO_SIZE ((unsigned) 1))
- size = TO_SIZE ((unsigned) 1);
- dot += TO_ADDR (size);
- output_section_statement->bfd_section->size
- = TO_SIZE (dot - output_section_statement->bfd_section->vma);
-
- }
- break;
-
- case lang_reloc_statement_enum:
- {
- int size;
-
- s->reloc_statement.output_offset =
- dot - output_section_statement->bfd_section->vma;
- s->reloc_statement.output_section =
- output_section_statement->bfd_section;
- size = bfd_get_reloc_size (s->reloc_statement.howto);
- dot += TO_ADDR (size);
- output_section_statement->bfd_section->size
- = TO_SIZE (dot - output_section_statement->bfd_section->vma);
- }
- break;
-
- case lang_wild_statement_enum:
- dot = lang_size_sections_1 (&s->wild_statement.children.head,
- output_section_statement,
- fill, dot, relax, check_regions);
- break;
-
- case lang_object_symbols_statement_enum:
- link_info.create_object_symbols_section =
- output_section_statement->bfd_section;
- break;
-
- case lang_output_statement_enum:
- case lang_target_statement_enum:
- break;
-
- case lang_input_section_enum:
- {
- asection *i;
-
- i = s->input_section.section;
- if (relax)
- {
- bfd_boolean again;
-
- if (!bfd_relax_section (i->owner, i, &link_info, &again))
- einfo (_("%P%F: can't relax section: %E\n"));
- if (again)
- *relax = TRUE;
- }
- dot = size_input_section (prev, output_section_statement,
- fill, dot);
- }
- break;
-
- case lang_input_statement_enum:
- break;
-
- case lang_fill_statement_enum:
- s->fill_statement.output_section =
- output_section_statement->bfd_section;
-
- fill = s->fill_statement.fill;
- break;
-
- case lang_assignment_statement_enum:
- {
- bfd_vma newdot = dot;
- etree_type *tree = s->assignment_statement.exp;
-
- expld.dataseg.relro = exp_seg_relro_none;
-
- exp_fold_tree (tree,
- output_section_statement->bfd_section,
- &newdot);
-
- ldlang_check_relro_region (s, &expld.dataseg);
-
- expld.dataseg.relro = exp_seg_relro_none;
-
- /* This symbol may be relative to this section. */
- if ((tree->type.node_class == etree_provided
- || tree->type.node_class == etree_assign)
- && (tree->assign.dst [0] != '.'
- || tree->assign.dst [1] != '\0'))
- output_section_statement->update_dot = 1;
-
- if (!output_section_statement->ignored)
- {
- if (output_section_statement == abs_output_section)
- {
- /* If we don't have an output section, then just adjust
- the default memory address. */
- lang_memory_region_lookup (DEFAULT_MEMORY_REGION,
- FALSE)->current = newdot;
- }
- else if (newdot != dot)
- {
- /* Insert a pad after this statement. We can't
- put the pad before when relaxing, in case the
- assignment references dot. */
- insert_pad (&s->header.next, fill, TO_SIZE (newdot - dot),
- output_section_statement->bfd_section, dot);
-
- /* Don't neuter the pad below when relaxing. */
- s = s->header.next;
-
- /* If dot is advanced, this implies that the section
- should have space allocated to it, unless the
- user has explicitly stated that the section
- should not be allocated. */
- if (output_section_statement->sectype != noalloc_section
- && (output_section_statement->sectype != noload_section
- || (bfd_get_flavour (link_info.output_bfd)
- == bfd_target_elf_flavour)))
- output_section_statement->bfd_section->flags |= SEC_ALLOC;
- }
- dot = newdot;
- }
- }
- break;
-
- case lang_padding_statement_enum:
- /* If this is the first time lang_size_sections is called,
- we won't have any padding statements. If this is the
- second or later passes when relaxing, we should allow
- padding to shrink. If padding is needed on this pass, it
- will be added back in. */
- s->padding_statement.size = 0;
-
- /* Make sure output_offset is valid. If relaxation shrinks
- the section and this pad isn't needed, it's possible to
- have output_offset larger than the final size of the
- section. bfd_set_section_contents will complain even for
- a pad size of zero. */
- s->padding_statement.output_offset
- = dot - output_section_statement->bfd_section->vma;
- break;
-
- case lang_group_statement_enum:
- dot = lang_size_sections_1 (&s->group_statement.children.head,
- output_section_statement,
- fill, dot, relax, check_regions);
- break;
-
- case lang_insert_statement_enum:
- break;
-
- /* We can only get here when relaxing is turned on. */
- case lang_address_statement_enum:
- break;
-
- default:
- FAIL ();
- break;
- }
- prev = &s->header.next;
- }
- return dot;
-}
-
-/* Callback routine that is used in _bfd_elf_map_sections_to_segments.
- The BFD library has set NEW_SEGMENT to TRUE iff it thinks that
- CURRENT_SECTION and PREVIOUS_SECTION ought to be placed into different
- segments. We are allowed an opportunity to override this decision. */
-
-bfd_boolean
-ldlang_override_segment_assignment (struct bfd_link_info *info ATTRIBUTE_UNUSED,
- bfd *abfd ATTRIBUTE_UNUSED,
- asection *current_section,
- asection *previous_section,
- bfd_boolean new_segment)
-{
- lang_output_section_statement_type *cur;
- lang_output_section_statement_type *prev;
-
- /* The checks below are only necessary when the BFD library has decided
- that the two sections ought to be placed into the same segment. */
- if (new_segment)
- return TRUE;
-
- /* Paranoia checks. */
- if (current_section == NULL || previous_section == NULL)
- return new_segment;
-
- /* If this flag is set, the target never wants code and non-code
- sections comingled in the same segment. */
- if (config.separate_code
- && ((current_section->flags ^ previous_section->flags) & SEC_CODE))
- return TRUE;
-
- /* Find the memory regions associated with the two sections.
- We call lang_output_section_find() here rather than scanning the list
- of output sections looking for a matching section pointer because if
- we have a large number of sections then a hash lookup is faster. */
- cur = lang_output_section_find (current_section->name);
- prev = lang_output_section_find (previous_section->name);
-
- /* More paranoia. */
- if (cur == NULL || prev == NULL)
- return new_segment;
-
- /* If the regions are different then force the sections to live in
- different segments. See the email thread starting at the following
- URL for the reasons why this is necessary:
- http://sourceware.org/ml/binutils/2007-02/msg00216.html */
- return cur->region != prev->region;
-}
-
-void
-one_lang_size_sections_pass (bfd_boolean *relax, bfd_boolean check_regions)
-{
- lang_statement_iteration++;
- lang_size_sections_1 (&statement_list.head, abs_output_section,
- 0, 0, relax, check_regions);
-}
-
-static bfd_boolean
-lang_size_segment (seg_align_type *seg)
-{
- /* If XXX_SEGMENT_ALIGN XXX_SEGMENT_END pair was seen, check whether
- a page could be saved in the data segment. */
- bfd_vma first, last;
-
- first = -seg->base & (seg->pagesize - 1);
- last = seg->end & (seg->pagesize - 1);
- if (first && last
- && ((seg->base & ~(seg->pagesize - 1))
- != (seg->end & ~(seg->pagesize - 1)))
- && first + last <= seg->pagesize)
- {
- seg->phase = exp_seg_adjust;
- return TRUE;
- }
-
- seg->phase = exp_seg_done;
- return FALSE;
-}
-
-static bfd_vma
-lang_size_relro_segment_1 (seg_align_type *seg)
-{
- bfd_vma relro_end, desired_end;
- asection *sec;
-
- /* Compute the expected PT_GNU_RELRO/PT_LOAD segment end. */
- relro_end = ((seg->relro_end + seg->pagesize - 1)
- & ~(seg->pagesize - 1));
-
- /* Adjust by the offset arg of XXX_SEGMENT_RELRO_END. */
- desired_end = relro_end - seg->relro_offset;
-
- /* For sections in the relro segment.. */
- for (sec = link_info.output_bfd->section_last; sec; sec = sec->prev)
- if ((sec->flags & SEC_ALLOC) != 0
- && sec->vma >= seg->base
- && sec->vma < seg->relro_end - seg->relro_offset)
- {
- /* Where do we want to put this section so that it ends as
- desired? */
- bfd_vma start, end, bump;
-
- end = start = sec->vma;
- if (!IS_TBSS (sec))
- end += TO_ADDR (sec->size);
- bump = desired_end - end;
- /* We'd like to increase START by BUMP, but we must heed
- alignment so the increase might be less than optimum. */
- start += bump;
- start &= ~(((bfd_vma) 1 << sec->alignment_power) - 1);
- /* This is now the desired end for the previous section. */
- desired_end = start;
- }
-
- seg->phase = exp_seg_relro_adjust;
- ASSERT (desired_end >= seg->base);
- seg->base = desired_end;
- return relro_end;
-}
-
-static bfd_boolean
-lang_size_relro_segment (bfd_boolean *relax, bfd_boolean check_regions)
-{
- bfd_boolean do_reset = FALSE;
- bfd_boolean do_data_relro;
- bfd_vma data_initial_base, data_relro_end;
-
- if (link_info.relro && expld.dataseg.relro_end)
- {
- do_data_relro = TRUE;
- data_initial_base = expld.dataseg.base;
- data_relro_end = lang_size_relro_segment_1 (&expld.dataseg);
- }
- else
- {
- do_data_relro = FALSE;
- data_initial_base = data_relro_end = 0;
- }
-
- if (do_data_relro)
- {
- lang_reset_memory_regions ();
- one_lang_size_sections_pass (relax, check_regions);
-
- /* Assignments to dot, or to output section address in a user
- script have increased padding over the original. Revert. */
- if (do_data_relro && expld.dataseg.relro_end > data_relro_end)
- {
- expld.dataseg.base = data_initial_base;;
- do_reset = TRUE;
- }
- }
-
- if (!do_data_relro && lang_size_segment (&expld.dataseg))
- do_reset = TRUE;
-
- return do_reset;
-}
-
-void
-lang_size_sections (bfd_boolean *relax, bfd_boolean check_regions)
-{
- expld.phase = lang_allocating_phase_enum;
- expld.dataseg.phase = exp_seg_none;
-
- one_lang_size_sections_pass (relax, check_regions);
-
- if (expld.dataseg.phase != exp_seg_end_seen)
- expld.dataseg.phase = exp_seg_done;
-
- if (expld.dataseg.phase == exp_seg_end_seen)
- {
- bfd_boolean do_reset
- = lang_size_relro_segment (relax, check_regions);
-
- if (do_reset)
- {
- lang_reset_memory_regions ();
- one_lang_size_sections_pass (relax, check_regions);
- }
-
- if (link_info.relro && expld.dataseg.relro_end)
- {
- link_info.relro_start = expld.dataseg.base;
- link_info.relro_end = expld.dataseg.relro_end;
- }
- }
-}
-
-static lang_output_section_statement_type *current_section;
-static lang_assignment_statement_type *current_assign;
-static bfd_boolean prefer_next_section;
-
-/* Worker function for lang_do_assignments. Recursiveness goes here. */
-
-static bfd_vma
-lang_do_assignments_1 (lang_statement_union_type *s,
- lang_output_section_statement_type *current_os,
- fill_type *fill,
- bfd_vma dot,
- bfd_boolean *found_end)
-{
- for (; s != NULL; s = s->header.next)
- {
- switch (s->header.type)
- {
- case lang_constructors_statement_enum:
- dot = lang_do_assignments_1 (constructor_list.head,
- current_os, fill, dot, found_end);
- break;
-
- case lang_output_section_statement_enum:
- {
- lang_output_section_statement_type *os;
- bfd_vma newdot;
-
- os = &(s->output_section_statement);
- os->after_end = *found_end;
- if (os->bfd_section != NULL && !os->ignored)
- {
- if ((os->bfd_section->flags & SEC_ALLOC) != 0)
- {
- current_section = os;
- prefer_next_section = FALSE;
- }
- dot = os->bfd_section->vma;
- }
- newdot = lang_do_assignments_1 (os->children.head,
- os, os->fill, dot, found_end);
- if (!os->ignored)
- {
- if (os->bfd_section != NULL)
- {
- /* .tbss sections effectively have zero size. */
- if (!IS_TBSS (os->bfd_section)
- || bfd_link_relocatable (&link_info))
- dot += TO_ADDR (os->bfd_section->size);
-
- if (os->update_dot_tree != NULL)
- exp_fold_tree (os->update_dot_tree,
- bfd_abs_section_ptr, &dot);
- }
- else
- dot = newdot;
- }
- }
- break;
-
- case lang_wild_statement_enum:
-
- dot = lang_do_assignments_1 (s->wild_statement.children.head,
- current_os, fill, dot, found_end);
- break;
-
- case lang_object_symbols_statement_enum:
- case lang_output_statement_enum:
- case lang_target_statement_enum:
- break;
-
- case lang_data_statement_enum:
- exp_fold_tree (s->data_statement.exp, bfd_abs_section_ptr, &dot);
- if (expld.result.valid_p)
- {
- s->data_statement.value = expld.result.value;
- if (expld.result.section != NULL)
- s->data_statement.value += expld.result.section->vma;
- }
- else if (expld.phase == lang_final_phase_enum)
- einfo (_("%F%P: invalid data statement\n"));
- {
- unsigned int size;
- switch (s->data_statement.type)
- {
- default:
- abort ();
- case QUAD:
- case SQUAD:
- size = QUAD_SIZE;
- break;
- case LONG:
- size = LONG_SIZE;
- break;
- case SHORT:
- size = SHORT_SIZE;
- break;
- case BYTE:
- size = BYTE_SIZE;
- break;
- }
- if (size < TO_SIZE ((unsigned) 1))
- size = TO_SIZE ((unsigned) 1);
- dot += TO_ADDR (size);
- }
- break;
-
- case lang_reloc_statement_enum:
- exp_fold_tree (s->reloc_statement.addend_exp,
- bfd_abs_section_ptr, &dot);
- if (expld.result.valid_p)
- s->reloc_statement.addend_value = expld.result.value;
- else if (expld.phase == lang_final_phase_enum)
- einfo (_("%F%P: invalid reloc statement\n"));
- dot += TO_ADDR (bfd_get_reloc_size (s->reloc_statement.howto));
- break;
-
- case lang_input_section_enum:
- {
- asection *in = s->input_section.section;
-
- if ((in->flags & SEC_EXCLUDE) == 0)
- dot += TO_ADDR (in->size);
- }
- break;
-
- case lang_input_statement_enum:
- break;
-
- case lang_fill_statement_enum:
- fill = s->fill_statement.fill;
- break;
-
- case lang_assignment_statement_enum:
- current_assign = &s->assignment_statement;
- if (current_assign->exp->type.node_class != etree_assert)
- {
- const char *p = current_assign->exp->assign.dst;
-
- if (current_os == abs_output_section && p[0] == '.' && p[1] == 0)
- prefer_next_section = TRUE;
-
- while (*p == '_')
- ++p;
- if (strcmp (p, "end") == 0)
- *found_end = TRUE;
- }
- exp_fold_tree (s->assignment_statement.exp,
- (current_os->bfd_section != NULL
- ? current_os->bfd_section : bfd_und_section_ptr),
- &dot);
- break;
-
- case lang_padding_statement_enum:
- dot += TO_ADDR (s->padding_statement.size);
- break;
-
- case lang_group_statement_enum:
- dot = lang_do_assignments_1 (s->group_statement.children.head,
- current_os, fill, dot, found_end);
- break;
-
- case lang_insert_statement_enum:
- break;
-
- case lang_address_statement_enum:
- break;
-
- default:
- FAIL ();
- break;
- }
- }
- return dot;
-}
-
-void
-lang_do_assignments (lang_phase_type phase)
-{
- bfd_boolean found_end = FALSE;
-
- current_section = NULL;
- prefer_next_section = FALSE;
- expld.phase = phase;
- lang_statement_iteration++;
- lang_do_assignments_1 (statement_list.head,
- abs_output_section, NULL, 0, &found_end);
-}
-
-/* For an assignment statement outside of an output section statement,
- choose the best of neighbouring output sections to use for values
- of "dot". */
-
-asection *
-section_for_dot (void)
-{
- asection *s;
-
- /* Assignments belong to the previous output section, unless there
- has been an assignment to "dot", in which case following
- assignments belong to the next output section. (The assumption
- is that an assignment to "dot" is setting up the address for the
- next output section.) Except that past the assignment to "_end"
- we always associate with the previous section. This exception is
- for targets like SH that define an alloc .stack or other
- weirdness after non-alloc sections. */
- if (current_section == NULL || prefer_next_section)
- {
- lang_statement_union_type *stmt;
- lang_output_section_statement_type *os;
-
- for (stmt = (lang_statement_union_type *) current_assign;
- stmt != NULL;
- stmt = stmt->header.next)
- if (stmt->header.type == lang_output_section_statement_enum)
- break;
-
- os = &stmt->output_section_statement;
- while (os != NULL
- && !os->after_end
- && (os->bfd_section == NULL
- || (os->bfd_section->flags & SEC_EXCLUDE) != 0
- || bfd_section_removed_from_list (link_info.output_bfd,
- os->bfd_section)))
- os = os->next;
-
- if (current_section == NULL || os == NULL || !os->after_end)
- {
- if (os != NULL)
- s = os->bfd_section;
- else
- s = link_info.output_bfd->section_last;
- while (s != NULL
- && ((s->flags & SEC_ALLOC) == 0
- || (s->flags & SEC_THREAD_LOCAL) != 0))
- s = s->prev;
- if (s != NULL)
- return s;
-
- return bfd_abs_section_ptr;
- }
- }
-
- s = current_section->bfd_section;
-
- /* The section may have been stripped. */
- while (s != NULL
- && ((s->flags & SEC_EXCLUDE) != 0
- || (s->flags & SEC_ALLOC) == 0
- || (s->flags & SEC_THREAD_LOCAL) != 0
- || bfd_section_removed_from_list (link_info.output_bfd, s)))
- s = s->prev;
- if (s == NULL)
- s = link_info.output_bfd->sections;
- while (s != NULL
- && ((s->flags & SEC_ALLOC) == 0
- || (s->flags & SEC_THREAD_LOCAL) != 0))
- s = s->next;
- if (s != NULL)
- return s;
-
- return bfd_abs_section_ptr;
-}
-
-/* Array of __start/__stop/.startof./.sizeof/ symbols. */
-
-static struct bfd_link_hash_entry **start_stop_syms;
-static size_t start_stop_count = 0;
-static size_t start_stop_alloc = 0;
-
-/* Give start/stop SYMBOL for SEC a preliminary definition, and add it
- to start_stop_syms. */
-
-static void
-lang_define_start_stop (const char *symbol, asection *sec)
-{
- struct bfd_link_hash_entry *h;
-
- h = bfd_define_start_stop (link_info.output_bfd, &link_info, symbol, sec);
- if (h != NULL)
- {
- if (start_stop_count == start_stop_alloc)
- {
- start_stop_alloc = 2 * start_stop_alloc + 10;
- start_stop_syms
- = xrealloc (start_stop_syms,
- start_stop_alloc * sizeof (*start_stop_syms));
- }
- start_stop_syms[start_stop_count++] = h;
- }
-}
-
-/* Check for input sections whose names match references to
- __start_SECNAME or __stop_SECNAME symbols. Give the symbols
- preliminary definitions. */
-
-static void
-lang_init_start_stop (void)
-{
- bfd *abfd;
- asection *s;
- char leading_char = bfd_get_symbol_leading_char (link_info.output_bfd);
-
- for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link.next)
- for (s = abfd->sections; s != NULL; s = s->next)
- {
- const char *ps;
- const char *secname = s->name;
-
- for (ps = secname; *ps != '\0'; ps++)
- if (!ISALNUM ((unsigned char) *ps) && *ps != '_')
- break;
- if (*ps == '\0')
- {
- char *symbol = (char *) xmalloc (10 + strlen (secname));
-
- symbol[0] = leading_char;
- sprintf (symbol + (leading_char != 0), "__start_%s", secname);
- lang_define_start_stop (symbol, s);
-
- symbol[1] = leading_char;
- memcpy (symbol + 1 + (leading_char != 0), "__stop", 6);
- lang_define_start_stop (symbol + 1, s);
-
- free (symbol);
- }
- }
-}
-
-/* Iterate over start_stop_syms. */
-
-static void
-foreach_start_stop (void (*func) (struct bfd_link_hash_entry *))
-{
- size_t i;
-
- for (i = 0; i < start_stop_count; ++i)
- func (start_stop_syms[i]);
-}
-
-/* __start and __stop symbols are only supposed to be defined by the
- linker for orphan sections, but we now extend that to sections that
- map to an output section of the same name. The symbols were
- defined early for --gc-sections, before we mapped input to output
- sections, so undo those that don't satisfy this rule. */
-
-static void
-undef_start_stop (struct bfd_link_hash_entry *h)
-{
- if (h->ldscript_def)
- return;
-
- if (h->u.def.section->output_section == NULL
- || h->u.def.section->output_section->owner != link_info.output_bfd
- || strcmp (h->u.def.section->name,
- h->u.def.section->output_section->name) != 0)
- {
- h->type = bfd_link_hash_undefined;
- h->u.undef.abfd = NULL;
- }
-}
-
-static void
-lang_undef_start_stop (void)
-{
- foreach_start_stop (undef_start_stop);
-}
-
-/* Check for output sections whose names match references to
- .startof.SECNAME or .sizeof.SECNAME symbols. Give the symbols
- preliminary definitions. */
-
-static void
-lang_init_startof_sizeof (void)
-{
- asection *s;
-
- for (s = link_info.output_bfd->sections; s != NULL; s = s->next)
- {
- const char *secname = s->name;
- char *symbol = (char *) xmalloc (10 + strlen (secname));
-
- sprintf (symbol, ".startof.%s", secname);
- lang_define_start_stop (symbol, s);
-
- memcpy (symbol + 1, ".size", 5);
- lang_define_start_stop (symbol + 1, s);
- free (symbol);
- }
-}
-
-/* Set .startof., .sizeof., __start and __stop symbols final values. */
-
-static void
-set_start_stop (struct bfd_link_hash_entry *h)
-{
- if (h->ldscript_def
- || h->type != bfd_link_hash_defined)
- return;
-
- if (h->root.string[0] == '.')
- {
- /* .startof. or .sizeof. symbol.
- .startof. already has final value. */
- if (h->root.string[2] == 'i')
- {
- /* .sizeof. */
- h->u.def.value = TO_ADDR (h->u.def.section->size);
- h->u.def.section = bfd_abs_section_ptr;
- }
- }
- else
- {
- /* __start or __stop symbol. */
- int has_lead = bfd_get_symbol_leading_char (link_info.output_bfd) != 0;
-
- h->u.def.section = h->u.def.section->output_section;
- if (h->root.string[4 + has_lead] == 'o')
- {
- /* __stop_ */
- h->u.def.value = TO_ADDR (h->u.def.section->size);
- }
- }
-}
-
-static void
-lang_finalize_start_stop (void)
-{
- foreach_start_stop (set_start_stop);
-}
-
-static void
-lang_end (void)
-{
- struct bfd_link_hash_entry *h;
- bfd_boolean warn;
-
- if ((bfd_link_relocatable (&link_info) && !link_info.gc_sections)
- || bfd_link_dll (&link_info))
- warn = entry_from_cmdline;
- else
- warn = TRUE;
-
- /* Force the user to specify a root when generating a relocatable with
- --gc-sections. */
- if (link_info.gc_sections && bfd_link_relocatable (&link_info)
- && !(entry_from_cmdline || undef_from_cmdline))
- einfo (_("%P%F: gc-sections requires either an entry or "
- "an undefined symbol\n"));
-
- if (entry_symbol.name == NULL)
- {
- /* No entry has been specified. Look for the default entry, but
- don't warn if we don't find it. */
- entry_symbol.name = entry_symbol_default;
- warn = FALSE;
- }
-
- h = bfd_link_hash_lookup (link_info.hash, entry_symbol.name,
- FALSE, FALSE, TRUE);
- if (h != NULL
- && (h->type == bfd_link_hash_defined
- || h->type == bfd_link_hash_defweak)
- && h->u.def.section->output_section != NULL)
- {
- bfd_vma val;
-
- val = (h->u.def.value
- + bfd_get_section_vma (link_info.output_bfd,
- h->u.def.section->output_section)
- + h->u.def.section->output_offset);
- if (!bfd_set_start_address (link_info.output_bfd, val))
- einfo (_("%P%F:%s: can't set start address\n"), entry_symbol.name);
- }
- else
- {
- bfd_vma val;
- const char *send;
-
- /* We couldn't find the entry symbol. Try parsing it as a
- number. */
- val = bfd_scan_vma (entry_symbol.name, &send, 0);
- if (*send == '\0')
- {
- if (!bfd_set_start_address (link_info.output_bfd, val))
- einfo (_("%P%F: can't set start address\n"));
- }
- else
- {
- asection *ts;
-
- /* Can't find the entry symbol, and it's not a number. Use
- the first address in the text section. */
- ts = bfd_get_section_by_name (link_info.output_bfd, entry_section);
- if (ts != NULL)
- {
- if (warn)
- einfo (_("%P: warning: cannot find entry symbol %s;"
- " defaulting to %V\n"),
- entry_symbol.name,
- bfd_get_section_vma (link_info.output_bfd, ts));
- if (!(bfd_set_start_address
- (link_info.output_bfd,
- bfd_get_section_vma (link_info.output_bfd, ts))))
- einfo (_("%P%F: can't set start address\n"));
- }
- else
- {
- if (warn)
- einfo (_("%P: warning: cannot find entry symbol %s;"
- " not setting start address\n"),
- entry_symbol.name);
- }
- }
- }
-}
-
-/* This is a small function used when we want to ignore errors from
- BFD. */
-
-static void
-ignore_bfd_errors (const char *fmt ATTRIBUTE_UNUSED,
- va_list ap ATTRIBUTE_UNUSED)
-{
- /* Don't do anything. */
-}
-
-/* Check that the architecture of all the input files is compatible
- with the output file. Also call the backend to let it do any
- other checking that is needed. */
-
-static void
-lang_check (void)
-{
- lang_statement_union_type *file;
- bfd *input_bfd;
- const bfd_arch_info_type *compatible;
-
- for (file = file_chain.head; file != NULL; file = file->input_statement.next)
- {
-#ifdef ENABLE_PLUGINS
- /* Don't check format of files claimed by plugin. */
- if (file->input_statement.flags.claimed)
- continue;
-#endif /* ENABLE_PLUGINS */
- input_bfd = file->input_statement.the_bfd;
- compatible
- = bfd_arch_get_compatible (input_bfd, link_info.output_bfd,
- command_line.accept_unknown_input_arch);
-
- /* In general it is not possible to perform a relocatable
- link between differing object formats when the input
- file has relocations, because the relocations in the
- input format may not have equivalent representations in
- the output format (and besides BFD does not translate
- relocs for other link purposes than a final link). */
- if ((bfd_link_relocatable (&link_info)
- || link_info.emitrelocations)
- && (compatible == NULL
- || (bfd_get_flavour (input_bfd)
- != bfd_get_flavour (link_info.output_bfd)))
- && (bfd_get_file_flags (input_bfd) & HAS_RELOC) != 0)
- {
- einfo (_("%P%F: Relocatable linking with relocations from"
- " format %s (%B) to format %s (%B) is not supported\n"),
- bfd_get_target (input_bfd), input_bfd,
- bfd_get_target (link_info.output_bfd), link_info.output_bfd);
- /* einfo with %F exits. */
- }
-
- if (compatible == NULL)
- {
- if (command_line.warn_mismatch)
- einfo (_("%P%X: %s architecture of input file `%B'"
- " is incompatible with %s output\n"),
- bfd_printable_name (input_bfd), input_bfd,
- bfd_printable_name (link_info.output_bfd));
- }
- else if (bfd_count_sections (input_bfd))
- {
- /* If the input bfd has no contents, it shouldn't set the
- private data of the output bfd. */
-
- bfd_error_handler_type pfn = NULL;
-
- /* If we aren't supposed to warn about mismatched input
- files, temporarily set the BFD error handler to a
- function which will do nothing. We still want to call
- bfd_merge_private_bfd_data, since it may set up
- information which is needed in the output file. */
- if (!command_line.warn_mismatch)
- pfn = bfd_set_error_handler (ignore_bfd_errors);
- if (!bfd_merge_private_bfd_data (input_bfd, &link_info))
- {
- if (command_line.warn_mismatch)
- einfo (_("%P%X: failed to merge target specific data"
- " of file %B\n"), input_bfd);
- }
- if (!command_line.warn_mismatch)
- bfd_set_error_handler (pfn);
- }
- }
-}
-
-/* Look through all the global common symbols and attach them to the
- correct section. The -sort-common command line switch may be used
- to roughly sort the entries by alignment. */
-
-static void
-lang_common (void)
-{
- if (link_info.inhibit_common_definition)
- return;
- if (bfd_link_relocatable (&link_info)
- && !command_line.force_common_definition)
- return;
-
- if (!config.sort_common)
- bfd_link_hash_traverse (link_info.hash, lang_one_common, NULL);
- else
- {
- unsigned int power;
-
- if (config.sort_common == sort_descending)
- {
- for (power = 4; power > 0; power--)
- bfd_link_hash_traverse (link_info.hash, lang_one_common, &power);
-
- power = 0;
- bfd_link_hash_traverse (link_info.hash, lang_one_common, &power);
- }
- else
- {
- for (power = 0; power <= 4; power++)
- bfd_link_hash_traverse (link_info.hash, lang_one_common, &power);
-
- power = (unsigned int) -1;
- bfd_link_hash_traverse (link_info.hash, lang_one_common, &power);
- }
- }
-}
-
-/* Place one common symbol in the correct section. */
-
-static bfd_boolean
-lang_one_common (struct bfd_link_hash_entry *h, void *info)
-{
- unsigned int power_of_two;
- bfd_vma size;
- asection *section;
-
- if (h->type != bfd_link_hash_common)
- return TRUE;
-
- size = h->u.c.size;
- power_of_two = h->u.c.p->alignment_power;
-
- if (config.sort_common == sort_descending
- && power_of_two < *(unsigned int *) info)
- return TRUE;
- else if (config.sort_common == sort_ascending
- && power_of_two > *(unsigned int *) info)
- return TRUE;
-
- section = h->u.c.p->section;
- if (!bfd_define_common_symbol (link_info.output_bfd, &link_info, h))
- einfo (_("%P%F: Could not define common symbol `%T': %E\n"),
- h->root.string);
-
- if (config.map_file != NULL)
- {
- static bfd_boolean header_printed;
- int len;
- char *name;
- char buf[50];
-
- if (!header_printed)
- {
- minfo (_("\nAllocating common symbols\n"));
- minfo (_("Common symbol size file\n\n"));
- header_printed = TRUE;
- }
-
- name = bfd_demangle (link_info.output_bfd, h->root.string,
- DMGL_ANSI | DMGL_PARAMS);
- if (name == NULL)
- {
- minfo ("%s", h->root.string);
- len = strlen (h->root.string);
- }
- else
- {
- minfo ("%s", name);
- len = strlen (name);
- free (name);
- }
-
- if (len >= 19)
- {
- print_nl ();
- len = 0;
- }
- while (len < 20)
- {
- print_space ();
- ++len;
- }
-
- minfo ("0x");
- if (size <= 0xffffffff)
- sprintf (buf, "%lx", (unsigned long) size);
- else
- sprintf_vma (buf, size);
- minfo ("%s", buf);
- len = strlen (buf);
-
- while (len < 16)
- {
- print_space ();
- ++len;
- }
-
- minfo ("%B\n", section->owner);
- }
-
- return TRUE;
-}
-
-/* Handle a single orphan section S, placing the orphan into an appropriate
- output section. The effects of the --orphan-handling command line
- option are handled here. */
-
-static void
-ldlang_place_orphan (asection *s)
-{
- if (config.orphan_handling == orphan_handling_discard)
- {
- lang_output_section_statement_type *os;
- os = lang_output_section_statement_lookup (DISCARD_SECTION_NAME, 0,
- TRUE);
- if (os->addr_tree == NULL
- && (bfd_link_relocatable (&link_info)
- || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0))
- os->addr_tree = exp_intop (0);
- lang_add_section (&os->children, s, NULL, os);
- }
- else
- {
- lang_output_section_statement_type *os;
- const char *name = s->name;
- int constraint = 0;
-
- if (config.orphan_handling == orphan_handling_error)
- einfo (_("%X%P: error: unplaced orphan section `%A' from `%B'.\n"),
- s, s->owner);
-
- if (config.unique_orphan_sections || unique_section_p (s, NULL))
- constraint = SPECIAL;
-
- os = ldemul_place_orphan (s, name, constraint);
- if (os == NULL)
- {
- os = lang_output_section_statement_lookup (name, constraint, TRUE);
- if (os->addr_tree == NULL
- && (bfd_link_relocatable (&link_info)
- || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0))
- os->addr_tree = exp_intop (0);
- lang_add_section (&os->children, s, NULL, os);
- }
-
- if (config.orphan_handling == orphan_handling_warn)
- einfo (_("%P: warning: orphan section `%A' from `%B' being "
- "placed in section `%s'.\n"),
- s, s->owner, os->name);
- }
-}
-
-/* Run through the input files and ensure that every input section has
- somewhere to go. If one is found without a destination then create
- an input request and place it into the statement tree. */
-
-static void
-lang_place_orphans (void)
-{
- LANG_FOR_EACH_INPUT_STATEMENT (file)
- {
- asection *s;
-
- for (s = file->the_bfd->sections; s != NULL; s = s->next)
- {
- if (s->output_section == NULL)
- {
- /* This section of the file is not attached, root
- around for a sensible place for it to go. */
-
- if (file->flags.just_syms)
- bfd_link_just_syms (file->the_bfd, s, &link_info);
- else if (lang_discard_section_p (s))
- s->output_section = bfd_abs_section_ptr;
- else if (strcmp (s->name, "COMMON") == 0)
- {
- /* This is a lonely common section which must have
- come from an archive. We attach to the section
- with the wildcard. */
- if (!bfd_link_relocatable (&link_info)
- || command_line.force_common_definition)
- {
- if (default_common_section == NULL)
- default_common_section
- = lang_output_section_statement_lookup (".bss", 0,
- TRUE);
- lang_add_section (&default_common_section->children, s,
- NULL, default_common_section);
- }
- }
- else
- ldlang_place_orphan (s);
- }
- }
- }
-}
-
-void
-lang_set_flags (lang_memory_region_type *ptr, const char *flags, int invert)
-{
- flagword *ptr_flags;
-
- ptr_flags = invert ? &ptr->not_flags : &ptr->flags;
-
- while (*flags)
- {
- switch (*flags)
- {
- /* PR 17900: An exclamation mark in the attributes reverses
- the sense of any of the attributes that follow. */
- case '!':
- invert = !invert;
- ptr_flags = invert ? &ptr->not_flags : &ptr->flags;
- break;
-
- case 'A': case 'a':
- *ptr_flags |= SEC_ALLOC;
- break;
-
- case 'R': case 'r':
- *ptr_flags |= SEC_READONLY;
- break;
-
- case 'W': case 'w':
- *ptr_flags |= SEC_DATA;
- break;
-
- case 'X': case 'x':
- *ptr_flags |= SEC_CODE;
- break;
-
- case 'L': case 'l':
- case 'I': case 'i':
- *ptr_flags |= SEC_LOAD;
- break;
-
- default:
- einfo (_("%P%F: invalid character %c (%d) in flags\n"),
- *flags, *flags);
- break;
- }
- flags++;
- }
-}
-
-/* Call a function on each input file. This function will be called
- on an archive, but not on the elements. */
-
-void
-lang_for_each_input_file (void (*func) (lang_input_statement_type *))
-{
- lang_input_statement_type *f;
-
- for (f = &input_file_chain.head->input_statement;
- f != NULL;
- f = &f->next_real_file->input_statement)
- func (f);
-}
-
-/* Call a function on each file. The function will be called on all
- the elements of an archive which are included in the link, but will
- not be called on the archive file itself. */
-
-void
-lang_for_each_file (void (*func) (lang_input_statement_type *))
-{
- LANG_FOR_EACH_INPUT_STATEMENT (f)
- {
- func (f);
- }
-}
-
-void
-ldlang_add_file (lang_input_statement_type *entry)
-{
- lang_statement_append (&file_chain,
- (lang_statement_union_type *) entry,
- &entry->next);
-
- /* The BFD linker needs to have a list of all input BFDs involved in
- a link. */
- ASSERT (entry->the_bfd->link.next == NULL);
- ASSERT (entry->the_bfd != link_info.output_bfd);
-
- *link_info.input_bfds_tail = entry->the_bfd;
- link_info.input_bfds_tail = &entry->the_bfd->link.next;
- entry->the_bfd->usrdata = entry;
- bfd_set_gp_size (entry->the_bfd, g_switch_value);
-
- /* Look through the sections and check for any which should not be
- included in the link. We need to do this now, so that we can
- notice when the backend linker tries to report multiple
- definition errors for symbols which are in sections we aren't
- going to link. FIXME: It might be better to entirely ignore
- symbols which are defined in sections which are going to be
- discarded. This would require modifying the backend linker for
- each backend which might set the SEC_LINK_ONCE flag. If we do
- this, we should probably handle SEC_EXCLUDE in the same way. */
-
- bfd_map_over_sections (entry->the_bfd, section_already_linked, entry);
-}
-
-void
-lang_add_output (const char *name, int from_script)
-{
- /* Make -o on command line override OUTPUT in script. */
- if (!had_output_filename || !from_script)
- {
- output_filename = name;
- had_output_filename = TRUE;
- }
-}
-
-static int
-topower (int x)
-{
- unsigned int i = 1;
- int l;
-
- if (x < 0)
- return -1;
-
- for (l = 0; l < 32; l++)
- {
- if (i >= (unsigned int) x)
- return l;
- i <<= 1;
- }
-
- return 0;
-}
-
-lang_output_section_statement_type *
-lang_enter_output_section_statement (const char *output_section_statement_name,
- etree_type *address_exp,
- enum section_type sectype,
- etree_type *align,
- etree_type *subalign,
- etree_type *ebase,
- int constraint,
- int align_with_input)
-{
- lang_output_section_statement_type *os;
-
- os = lang_output_section_statement_lookup (output_section_statement_name,
- constraint, TRUE);
- current_section = os;
-
- if (os->addr_tree == NULL)
- {
- os->addr_tree = address_exp;
- }
- os->sectype = sectype;
- if (sectype != noload_section)
- os->flags = SEC_NO_FLAGS;
- else
- os->flags = SEC_NEVER_LOAD;
- os->block_value = 1;
-
- /* Make next things chain into subchain of this. */
- push_stat_ptr (&os->children);
-
- os->align_lma_with_input = align_with_input == ALIGN_WITH_INPUT;
- if (os->align_lma_with_input && align != NULL)
- einfo (_("%F%P:%S: error: align with input and explicit align specified\n"),
- NULL);
-
- os->subsection_alignment =
- topower (exp_get_value_int (subalign, -1, "subsection alignment"));
- os->section_alignment =
- topower (exp_get_value_int (align, -1, "section alignment"));
-
- os->load_base = ebase;
- return os;
-}
-
-void
-lang_final (void)
-{
- lang_output_statement_type *new_stmt;
-
- new_stmt = new_stat (lang_output_statement, stat_ptr);
- new_stmt->name = output_filename;
-}
-
-/* Reset the current counters in the regions. */
-
-void
-lang_reset_memory_regions (void)
-{
- lang_memory_region_type *p = lang_memory_region_list;
- asection *o;
- lang_output_section_statement_type *os;
-
- for (p = lang_memory_region_list; p != NULL; p = p->next)
- {
- p->current = p->origin;
- p->last_os = NULL;
- }
-
- for (os = &lang_output_section_statement.head->output_section_statement;
- os != NULL;
- os = os->next)
- {
- os->processed_vma = FALSE;
- os->processed_lma = FALSE;
- }
-
- for (o = link_info.output_bfd->sections; o != NULL; o = o->next)
- {
- /* Save the last size for possible use by bfd_relax_section. */
- o->rawsize = o->size;
- o->size = 0;
- }
-}
-
-/* Worker for lang_gc_sections_1. */
-
-static void
-gc_section_callback (lang_wild_statement_type *ptr,
- struct wildcard_list *sec ATTRIBUTE_UNUSED,
- asection *section,
- struct flag_info *sflag_info ATTRIBUTE_UNUSED,
- lang_input_statement_type *file ATTRIBUTE_UNUSED,
- void *data ATTRIBUTE_UNUSED)
-{
- /* If the wild pattern was marked KEEP, the member sections
- should be as well. */
- if (ptr->keep_sections)
- section->flags |= SEC_KEEP;
-}
-
-/* Iterate over sections marking them against GC. */
-
-static void
-lang_gc_sections_1 (lang_statement_union_type *s)
-{
- for (; s != NULL; s = s->header.next)
- {
- switch (s->header.type)
- {
- case lang_wild_statement_enum:
- walk_wild (&s->wild_statement, gc_section_callback, NULL);
- break;
- case lang_constructors_statement_enum:
- lang_gc_sections_1 (constructor_list.head);
- break;
- case lang_output_section_statement_enum:
- lang_gc_sections_1 (s->output_section_statement.children.head);
- break;
- case lang_group_statement_enum:
- lang_gc_sections_1 (s->group_statement.children.head);
- break;
- default:
- break;
- }
- }
-}
-
-static void
-lang_gc_sections (void)
-{
- /* Keep all sections so marked in the link script. */
- lang_gc_sections_1 (statement_list.head);
-
- /* SEC_EXCLUDE is ignored when doing a relocatable link, except in
- the special case of debug info. (See bfd/stabs.c)
- Twiddle the flag here, to simplify later linker code. */
- if (bfd_link_relocatable (&link_info))
- {
- LANG_FOR_EACH_INPUT_STATEMENT (f)
- {
- asection *sec;
-#ifdef ENABLE_PLUGINS
- if (f->flags.claimed)
- continue;
-#endif
- for (sec = f->the_bfd->sections; sec != NULL; sec = sec->next)
- if ((sec->flags & SEC_DEBUGGING) == 0)
- sec->flags &= ~SEC_EXCLUDE;
- }
- }
-
- if (link_info.gc_sections)
- bfd_gc_sections (link_info.output_bfd, &link_info);
-}
-
-/* Worker for lang_find_relro_sections_1. */
-
-static void
-find_relro_section_callback (lang_wild_statement_type *ptr ATTRIBUTE_UNUSED,
- struct wildcard_list *sec ATTRIBUTE_UNUSED,
- asection *section,
- struct flag_info *sflag_info ATTRIBUTE_UNUSED,
- lang_input_statement_type *file ATTRIBUTE_UNUSED,
- void *data)
-{
- /* Discarded, excluded and ignored sections effectively have zero
- size. */
- if (section->output_section != NULL
- && section->output_section->owner == link_info.output_bfd
- && (section->output_section->flags & SEC_EXCLUDE) == 0
- && !IGNORE_SECTION (section)
- && section->size != 0)
- {
- bfd_boolean *has_relro_section = (bfd_boolean *) data;
- *has_relro_section = TRUE;
- }
-}
-
-/* Iterate over sections for relro sections. */
-
-static void
-lang_find_relro_sections_1 (lang_statement_union_type *s,
- seg_align_type *seg,
- bfd_boolean *has_relro_section)
-{
- if (*has_relro_section)
- return;
-
- for (; s != NULL; s = s->header.next)
- {
- if (s == seg->relro_end_stat)
- break;
-
- switch (s->header.type)
- {
- case lang_wild_statement_enum:
- walk_wild (&s->wild_statement,
- find_relro_section_callback,
- has_relro_section);
- break;
- case lang_constructors_statement_enum:
- lang_find_relro_sections_1 (constructor_list.head,
- seg, has_relro_section);
- break;
- case lang_output_section_statement_enum:
- lang_find_relro_sections_1 (s->output_section_statement.children.head,
- seg, has_relro_section);
- break;
- case lang_group_statement_enum:
- lang_find_relro_sections_1 (s->group_statement.children.head,
- seg, has_relro_section);
- break;
- default:
- break;
- }
- }
-}
-
-static void
-lang_find_relro_sections (void)
-{
- bfd_boolean has_relro_section = FALSE;
-
- /* Check all sections in the link script. */
-
- lang_find_relro_sections_1 (expld.dataseg.relro_start_stat,
- &expld.dataseg, &has_relro_section);
-
- if (!has_relro_section)
- link_info.relro = FALSE;
-}
-
-/* Relax all sections until bfd_relax_section gives up. */
-
-void
-lang_relax_sections (bfd_boolean need_layout)
-{
- if (RELAXATION_ENABLED)
- {
- /* We may need more than one relaxation pass. */
- int i = link_info.relax_pass;
-
- /* The backend can use it to determine the current pass. */
- link_info.relax_pass = 0;
-
- while (i--)
- {
- /* Keep relaxing until bfd_relax_section gives up. */
- bfd_boolean relax_again;
-
- link_info.relax_trip = -1;
- do
- {
- link_info.relax_trip++;
-
- /* Note: pe-dll.c does something like this also. If you find
- you need to change this code, you probably need to change
- pe-dll.c also. DJ */
-
- /* Do all the assignments with our current guesses as to
- section sizes. */
- lang_do_assignments (lang_assigning_phase_enum);
-
- /* We must do this after lang_do_assignments, because it uses
- size. */
- lang_reset_memory_regions ();
-
- /* Perform another relax pass - this time we know where the
- globals are, so can make a better guess. */
- relax_again = FALSE;
- lang_size_sections (&relax_again, FALSE);
- }
- while (relax_again);
-
- link_info.relax_pass++;
- }
- need_layout = TRUE;
- }
-
- if (need_layout)
- {
- /* Final extra sizing to report errors. */
- lang_do_assignments (lang_assigning_phase_enum);
- lang_reset_memory_regions ();
- lang_size_sections (NULL, TRUE);
- }
-}
-
-#ifdef ENABLE_PLUGINS
-/* Find the insert point for the plugin's replacement files. We
- place them after the first claimed real object file, or if the
- first claimed object is an archive member, after the last real
- object file immediately preceding the archive. In the event
- no objects have been claimed at all, we return the first dummy
- object file on the list as the insert point; that works, but
- the callee must be careful when relinking the file_chain as it
- is not actually on that chain, only the statement_list and the
- input_file list; in that case, the replacement files must be
- inserted at the head of the file_chain. */
-
-static lang_input_statement_type *
-find_replacements_insert_point (void)
-{
- lang_input_statement_type *claim1, *lastobject;
- lastobject = &input_file_chain.head->input_statement;
- for (claim1 = &file_chain.head->input_statement;
- claim1 != NULL;
- claim1 = &claim1->next->input_statement)
- {
- if (claim1->flags.claimed)
- return claim1->flags.claim_archive ? lastobject : claim1;
- /* Update lastobject if this is a real object file. */
- if (claim1->the_bfd != NULL && claim1->the_bfd->my_archive == NULL)
- lastobject = claim1;
- }
- /* No files were claimed by the plugin. Choose the last object
- file found on the list (maybe the first, dummy entry) as the
- insert point. */
- return lastobject;
-}
-
-/* Find where to insert ADD, an archive element or shared library
- added during a rescan. */
-
-static lang_statement_union_type **
-find_rescan_insertion (lang_input_statement_type *add)
-{
- bfd *add_bfd = add->the_bfd;
- lang_input_statement_type *f;
- lang_input_statement_type *last_loaded = NULL;
- lang_input_statement_type *before = NULL;
- lang_statement_union_type **iter = NULL;
-
- if (add_bfd->my_archive != NULL)
- add_bfd = add_bfd->my_archive;
-
- /* First look through the input file chain, to find an object file
- before the one we've rescanned. Normal object files always
- appear on both the input file chain and the file chain, so this
- lets us get quickly to somewhere near the correct place on the
- file chain if it is full of archive elements. Archives don't
- appear on the file chain, but if an element has been extracted
- then their input_statement->next points at it. */
- for (f = &input_file_chain.head->input_statement;
- f != NULL;
- f = &f->next_real_file->input_statement)
- {
- if (f->the_bfd == add_bfd)
- {
- before = last_loaded;
- if (f->next != NULL)
- return &f->next->input_statement.next;
- }
- if (f->the_bfd != NULL && f->next != NULL)
- last_loaded = f;
- }
-
- for (iter = before ? &before->next : &file_chain.head->input_statement.next;
- *iter != NULL;
- iter = &(*iter)->input_statement.next)
- if ((*iter)->input_statement.the_bfd->my_archive == NULL)
- break;
-
- return iter;
-}
-
-/* Insert SRCLIST into DESTLIST after given element by chaining
- on FIELD as the next-pointer. (Counterintuitively does not need
- a pointer to the actual after-node itself, just its chain field.) */
-
-static void
-lang_list_insert_after (lang_statement_list_type *destlist,
- lang_statement_list_type *srclist,
- lang_statement_union_type **field)
-{
- *(srclist->tail) = *field;
- *field = srclist->head;
- if (destlist->tail == field)
- destlist->tail = srclist->tail;
-}
-
-/* Detach new nodes added to DESTLIST since the time ORIGLIST
- was taken as a copy of it and leave them in ORIGLIST. */
-
-static void
-lang_list_remove_tail (lang_statement_list_type *destlist,
- lang_statement_list_type *origlist)
-{
- union lang_statement_union **savetail;
- /* Check that ORIGLIST really is an earlier state of DESTLIST. */
- ASSERT (origlist->head == destlist->head);
- savetail = origlist->tail;
- origlist->head = *(savetail);
- origlist->tail = destlist->tail;
- destlist->tail = savetail;
- *savetail = NULL;
-}
-#endif /* ENABLE_PLUGINS */
-
-/* Add NAME to the list of garbage collection entry points. */
-
-void
-lang_add_gc_name (const char *name)
-{
- struct bfd_sym_chain *sym;
-
- if (name == NULL)
- return;
-
- sym = (struct bfd_sym_chain *) stat_alloc (sizeof (*sym));
-
- sym->next = link_info.gc_sym_list;
- sym->name = name;
- link_info.gc_sym_list = sym;
-}
-
-/* Check relocations. */
-
-static void
-lang_check_relocs (void)
-{
- if (link_info.check_relocs_after_open_input)
- {
- bfd *abfd;
-
- for (abfd = link_info.input_bfds;
- abfd != (bfd *) NULL; abfd = abfd->link.next)
- if (!bfd_link_check_relocs (abfd, &link_info))
- {
- /* No object output, fail return. */
- config.make_executable = FALSE;
- /* Note: we do not abort the loop, but rather
- continue the scan in case there are other
- bad relocations to report. */
- }
- }
-}
-
-/* Look through all output sections looking for places where we can
- propagate forward the lma region. */
-
-static void
-lang_propagate_lma_regions (void)
-{
- lang_output_section_statement_type *os;
-
- for (os = &lang_output_section_statement.head->output_section_statement;
- os != NULL;
- os = os->next)
- {
- if (os->prev != NULL
- && os->lma_region == NULL
- && os->load_base == NULL
- && os->addr_tree == NULL
- && os->region == os->prev->region)
- os->lma_region = os->prev->lma_region;
- }
-}
-
-void
-lang_process (void)
-{
- /* Finalize dynamic list. */
- if (link_info.dynamic_list)
- lang_finalize_version_expr_head (&link_info.dynamic_list->head);
-
- current_target = default_target;
-
- /* Open the output file. */
- lang_for_each_statement (ldlang_open_output);
- init_opb ();
-
- ldemul_create_output_section_statements ();
-
- /* Add to the hash table all undefineds on the command line. */
- lang_place_undefineds ();
-
- if (!bfd_section_already_linked_table_init ())
- einfo (_("%P%F: Failed to create hash table\n"));
-
- /* Create a bfd for each input file. */
- current_target = default_target;
- lang_statement_iteration++;
- open_input_bfds (statement_list.head, OPEN_BFD_NORMAL);
-
-#ifdef ENABLE_PLUGINS
- if (link_info.lto_plugin_active)
- {
- lang_statement_list_type added;
- lang_statement_list_type files, inputfiles;
-
- /* Now all files are read, let the plugin(s) decide if there
- are any more to be added to the link before we call the
- emulation's after_open hook. We create a private list of
- input statements for this purpose, which we will eventually
- insert into the global statement list after the first claimed
- file. */
- added = *stat_ptr;
- /* We need to manipulate all three chains in synchrony. */
- files = file_chain;
- inputfiles = input_file_chain;
- if (plugin_call_all_symbols_read ())
- einfo (_("%P%F: %s: plugin reported error after all symbols read\n"),
- plugin_error_plugin ());
- /* Open any newly added files, updating the file chains. */
- open_input_bfds (*added.tail, OPEN_BFD_NORMAL);
- /* Restore the global list pointer now they have all been added. */
- lang_list_remove_tail (stat_ptr, &added);
- /* And detach the fresh ends of the file lists. */
- lang_list_remove_tail (&file_chain, &files);
- lang_list_remove_tail (&input_file_chain, &inputfiles);
- /* Were any new files added? */
- if (added.head != NULL)
- {
- /* If so, we will insert them into the statement list immediately
- after the first input file that was claimed by the plugin. */
- plugin_insert = find_replacements_insert_point ();
- /* If a plugin adds input files without having claimed any, we
- don't really have a good idea where to place them. Just putting
- them at the start or end of the list is liable to leave them
- outside the crtbegin...crtend range. */
- ASSERT (plugin_insert != NULL);
- /* Splice the new statement list into the old one. */
- lang_list_insert_after (stat_ptr, &added,
- &plugin_insert->header.next);
- /* Likewise for the file chains. */
- lang_list_insert_after (&input_file_chain, &inputfiles,
- &plugin_insert->next_real_file);
- /* We must be careful when relinking file_chain; we may need to
- insert the new files at the head of the list if the insert
- point chosen is the dummy first input file. */
- if (plugin_insert->filename)
- lang_list_insert_after (&file_chain, &files, &plugin_insert->next);
- else
- lang_list_insert_after (&file_chain, &files, &file_chain.head);
-
- /* Rescan archives in case new undefined symbols have appeared. */
- files = file_chain;
- lang_statement_iteration++;
- open_input_bfds (statement_list.head, OPEN_BFD_RESCAN);
- lang_list_remove_tail (&file_chain, &files);
- while (files.head != NULL)
- {
- lang_statement_union_type **insert;
- lang_statement_union_type **iter, *temp;
- bfd *my_arch;
-
- insert = find_rescan_insertion (&files.head->input_statement);
- /* All elements from an archive can be added at once. */
- iter = &files.head->input_statement.next;
- my_arch = files.head->input_statement.the_bfd->my_archive;
- if (my_arch != NULL)
- for (; *iter != NULL; iter = &(*iter)->input_statement.next)
- if ((*iter)->input_statement.the_bfd->my_archive != my_arch)
- break;
- temp = *insert;
- *insert = files.head;
- files.head = *iter;
- *iter = temp;
- if (my_arch != NULL)
- {
- lang_input_statement_type *parent = my_arch->usrdata;
- if (parent != NULL)
- parent->next = (lang_statement_union_type *)
- ((char *) iter
- - offsetof (lang_input_statement_type, next));
- }
- }
- }
- }
-#endif /* ENABLE_PLUGINS */
-
- /* Make sure that nobody has tried to add a symbol to this list
- before now. */
- ASSERT (link_info.gc_sym_list == NULL);
-
- link_info.gc_sym_list = &entry_symbol;
-
- if (entry_symbol.name == NULL)
- {
- link_info.gc_sym_list = ldlang_undef_chain_list_head;
-
- /* entry_symbol is normally initialied by a ENTRY definition in the
- linker script or the -e command line option. But if neither of
- these have been used, the target specific backend may still have
- provided an entry symbol via a call to lang_default_entry().
- Unfortunately this value will not be processed until lang_end()
- is called, long after this function has finished. So detect this
- case here and add the target's entry symbol to the list of starting
- points for garbage collection resolution. */
- lang_add_gc_name (entry_symbol_default);
- }
-
- lang_add_gc_name (link_info.init_function);
- lang_add_gc_name (link_info.fini_function);
-
- ldemul_after_open ();
- if (config.map_file != NULL)
- lang_print_asneeded ();
-
- bfd_section_already_linked_table_free ();
-
- /* Make sure that we're not mixing architectures. We call this
- after all the input files have been opened, but before we do any
- other processing, so that any operations merge_private_bfd_data
- does on the output file will be known during the rest of the
- link. */
- lang_check ();
-
- /* Handle .exports instead of a version script if we're told to do so. */
- if (command_line.version_exports_section)
- lang_do_version_exports_section ();
-
- /* Build all sets based on the information gathered from the input
- files. */
- ldctor_build_sets ();
-
- /* Give initial values for __start and __stop symbols, so that ELF
- gc_sections will keep sections referenced by these symbols. Must
- be done before lang_do_assignments below. */
- if (config.build_constructors)
- lang_init_start_stop ();
-
- /* PR 13683: We must rerun the assignments prior to running garbage
- collection in order to make sure that all symbol aliases are resolved. */
- lang_do_assignments (lang_mark_phase_enum);
-
- lang_do_memory_regions();
- expld.phase = lang_first_phase_enum;
-
- /* Size up the common data. */
- lang_common ();
-
- /* Remove unreferenced sections if asked to. */
- lang_gc_sections ();
-
- /* Check relocations. */
- lang_check_relocs ();
-
- ldemul_after_check_relocs ();
-
- /* Update wild statements. */
- update_wild_statements (statement_list.head);
-
- /* Run through the contours of the script and attach input sections
- to the correct output sections. */
- lang_statement_iteration++;
- map_input_to_output_sections (statement_list.head, NULL, NULL);
-
- process_insert_statements ();
-
- /* Find any sections not attached explicitly and handle them. */
- lang_place_orphans ();
-
- if (!bfd_link_relocatable (&link_info))
- {
- asection *found;
-
- /* Merge SEC_MERGE sections. This has to be done after GC of
- sections, so that GCed sections are not merged, but before
- assigning dynamic symbols, since removing whole input sections
- is hard then. */
- bfd_merge_sections (link_info.output_bfd, &link_info);
-
- /* Look for a text section and set the readonly attribute in it. */
- found = bfd_get_section_by_name (link_info.output_bfd, ".text");
-
- if (found != NULL)
- {
- if (config.text_read_only)
- found->flags |= SEC_READONLY;
- else
- found->flags &= ~SEC_READONLY;
- }
- }
-
- /* Copy forward lma regions for output sections in same lma region. */
- lang_propagate_lma_regions ();
-
- /* Defining __start/__stop symbols early for --gc-sections to work
- around a glibc build problem can result in these symbols being
- defined when they should not be. Fix them now. */
- if (config.build_constructors)
- lang_undef_start_stop ();
-
- /* Define .startof./.sizeof. symbols with preliminary values before
- dynamic symbols are created. */
- if (!bfd_link_relocatable (&link_info))
- lang_init_startof_sizeof ();
-
- /* Do anything special before sizing sections. This is where ELF
- and other back-ends size dynamic sections. */
- ldemul_before_allocation ();
-
- /* We must record the program headers before we try to fix the
- section positions, since they will affect SIZEOF_HEADERS. */
- lang_record_phdrs ();
-
- /* Check relro sections. */
- if (link_info.relro && !bfd_link_relocatable (&link_info))
- lang_find_relro_sections ();
-
- /* Size up the sections. */
- lang_size_sections (NULL, !RELAXATION_ENABLED);
-
- /* See if anything special should be done now we know how big
- everything is. This is where relaxation is done. */
- ldemul_after_allocation ();
-
- /* Fix any __start, __stop, .startof. or .sizeof. symbols. */
- lang_finalize_start_stop ();
-
- /* Do all the assignments, now that we know the final resting places
- of all the symbols. */
- lang_do_assignments (lang_final_phase_enum);
-
- ldemul_finish ();
-
- /* Convert absolute symbols to section relative. */
- ldexp_finalize_syms ();
-
- /* Make sure that the section addresses make sense. */
- if (command_line.check_section_addresses)
- lang_check_section_addresses ();
-
- /* Check any required symbols are known. */
- ldlang_check_require_defined_symbols ();
-
- lang_end ();
-}
-
-/* EXPORTED TO YACC */
-
-void
-lang_add_wild (struct wildcard_spec *filespec,
- struct wildcard_list *section_list,
- bfd_boolean keep_sections)
-{
- struct wildcard_list *curr, *next;
- lang_wild_statement_type *new_stmt;
-
- /* Reverse the list as the parser puts it back to front. */
- for (curr = section_list, section_list = NULL;
- curr != NULL;
- section_list = curr, curr = next)
- {
- next = curr->next;
- curr->next = section_list;
- }
-
- if (filespec != NULL && filespec->name != NULL)
- {
- if (strcmp (filespec->name, "*") == 0)
- filespec->name = NULL;
- else if (!wildcardp (filespec->name))
- lang_has_input_file = TRUE;
- }
-
- new_stmt = new_stat (lang_wild_statement, stat_ptr);
- new_stmt->filename = NULL;
- new_stmt->filenames_sorted = FALSE;
- new_stmt->section_flag_list = NULL;
- new_stmt->exclude_name_list = NULL;
- if (filespec != NULL)
- {
- new_stmt->filename = filespec->name;
- new_stmt->filenames_sorted = filespec->sorted == by_name;
- new_stmt->section_flag_list = filespec->section_flag_list;
- new_stmt->exclude_name_list = filespec->exclude_name_list;
- }
- new_stmt->section_list = section_list;
- new_stmt->keep_sections = keep_sections;
- lang_list_init (&new_stmt->children);
- analyze_walk_wild_section_handler (new_stmt);
-}
-
-void
-lang_section_start (const char *name, etree_type *address,
- const segment_type *segment)
-{
- lang_address_statement_type *ad;
-
- ad = new_stat (lang_address_statement, stat_ptr);
- ad->section_name = name;
- ad->address = address;
- ad->segment = segment;
-}
-
-/* Set the start symbol to NAME. CMDLINE is nonzero if this is called
- because of a -e argument on the command line, or zero if this is
- called by ENTRY in a linker script. Command line arguments take
- precedence. */
-
-void
-lang_add_entry (const char *name, bfd_boolean cmdline)
-{
- if (entry_symbol.name == NULL
- || cmdline
- || !entry_from_cmdline)
- {
- entry_symbol.name = name;
- entry_from_cmdline = cmdline;
- }
-}
-
-/* Set the default start symbol to NAME. .em files should use this,
- not lang_add_entry, to override the use of "start" if neither the
- linker script nor the command line specifies an entry point. NAME
- must be permanently allocated. */
-void
-lang_default_entry (const char *name)
-{
- entry_symbol_default = name;
-}
-
-void
-lang_add_target (const char *name)
-{
- lang_target_statement_type *new_stmt;
-
- new_stmt = new_stat (lang_target_statement, stat_ptr);
- new_stmt->target = name;
-}
-
-void
-lang_add_map (const char *name)
-{
- while (*name)
- {
- switch (*name)
- {
- case 'F':
- map_option_f = TRUE;
- break;
- }
- name++;
- }
-}
-
-void
-lang_add_fill (fill_type *fill)
-{
- lang_fill_statement_type *new_stmt;
-
- new_stmt = new_stat (lang_fill_statement, stat_ptr);
- new_stmt->fill = fill;
-}
-
-void
-lang_add_data (int type, union etree_union *exp)
-{
- lang_data_statement_type *new_stmt;
-
- new_stmt = new_stat (lang_data_statement, stat_ptr);
- new_stmt->exp = exp;
- new_stmt->type = type;
-}
-
-/* Create a new reloc statement. RELOC is the BFD relocation type to
- generate. HOWTO is the corresponding howto structure (we could
- look this up, but the caller has already done so). SECTION is the
- section to generate a reloc against, or NAME is the name of the
- symbol to generate a reloc against. Exactly one of SECTION and
- NAME must be NULL. ADDEND is an expression for the addend. */
-
-void
-lang_add_reloc (bfd_reloc_code_real_type reloc,
- reloc_howto_type *howto,
- asection *section,
- const char *name,
- union etree_union *addend)
-{
- lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr);
-
- p->reloc = reloc;
- p->howto = howto;
- p->section = section;
- p->name = name;
- p->addend_exp = addend;
-
- p->addend_value = 0;
- p->output_section = NULL;
- p->output_offset = 0;
-}
-
-lang_assignment_statement_type *
-lang_add_assignment (etree_type *exp)
-{
- lang_assignment_statement_type *new_stmt;
-
- new_stmt = new_stat (lang_assignment_statement, stat_ptr);
- new_stmt->exp = exp;
- return new_stmt;
-}
-
-void
-lang_add_attribute (enum statement_enum attribute)
-{
- new_statement (attribute, sizeof (lang_statement_header_type), stat_ptr);
-}
-
-void
-lang_startup (const char *name)
-{
- if (first_file->filename != NULL)
- {
- einfo (_("%P%F: multiple STARTUP files\n"));
- }
- first_file->filename = name;
- first_file->local_sym_name = name;
- first_file->flags.real = TRUE;
-}
-
-void
-lang_float (bfd_boolean maybe)
-{
- lang_float_flag = maybe;
-}
-
-
-/* Work out the load- and run-time regions from a script statement, and
- store them in *LMA_REGION and *REGION respectively.
-
- MEMSPEC is the name of the run-time region, or the value of
- DEFAULT_MEMORY_REGION if the statement didn't specify one.
- LMA_MEMSPEC is the name of the load-time region, or null if the
- statement didn't specify one.HAVE_LMA_P is TRUE if the statement
- had an explicit load address.
-
- It is an error to specify both a load region and a load address. */
-
-static void
-lang_get_regions (lang_memory_region_type **region,
- lang_memory_region_type **lma_region,
- const char *memspec,
- const char *lma_memspec,
- bfd_boolean have_lma,
- bfd_boolean have_vma)
-{
- *lma_region = lang_memory_region_lookup (lma_memspec, FALSE);
-
- /* If no runtime region or VMA has been specified, but the load region
- has been specified, then use the load region for the runtime region
- as well. */
- if (lma_memspec != NULL
- && !have_vma
- && strcmp (memspec, DEFAULT_MEMORY_REGION) == 0)
- *region = *lma_region;
- else
- *region = lang_memory_region_lookup (memspec, FALSE);
-
- if (have_lma && lma_memspec != 0)
- einfo (_("%X%P:%S: section has both a load address and a load region\n"),
- NULL);
-}
-
-void
-lang_leave_output_section_statement (fill_type *fill, const char *memspec,
- lang_output_section_phdr_list *phdrs,
- const char *lma_memspec)
-{
- lang_get_regions (&current_section->region,
- &current_section->lma_region,
- memspec, lma_memspec,
- current_section->load_base != NULL,
- current_section->addr_tree != NULL);
-
- current_section->fill = fill;
- current_section->phdrs = phdrs;
- pop_stat_ptr ();
-}
-
-void
-lang_statement_append (lang_statement_list_type *list,
- lang_statement_union_type *element,
- lang_statement_union_type **field)
-{
- *(list->tail) = element;
- list->tail = field;
-}
-
-/* Set the output format type. -oformat overrides scripts. */
-
-void
-lang_add_output_format (const char *format,
- const char *big,
- const char *little,
- int from_script)
-{
- if (output_target == NULL || !from_script)
- {
- if (command_line.endian == ENDIAN_BIG
- && big != NULL)
- format = big;
- else if (command_line.endian == ENDIAN_LITTLE
- && little != NULL)
- format = little;
-
- output_target = format;
- }
-}
-
-void
-lang_add_insert (const char *where, int is_before)
-{
- lang_insert_statement_type *new_stmt;
-
- new_stmt = new_stat (lang_insert_statement, stat_ptr);
- new_stmt->where = where;
- new_stmt->is_before = is_before;
- saved_script_handle = previous_script_handle;
-}
-
-/* Enter a group. This creates a new lang_group_statement, and sets
- stat_ptr to build new statements within the group. */
-
-void
-lang_enter_group (void)
-{
- lang_group_statement_type *g;
-
- g = new_stat (lang_group_statement, stat_ptr);
- lang_list_init (&g->children);
- push_stat_ptr (&g->children);
-}
-
-/* Leave a group. This just resets stat_ptr to start writing to the
- regular list of statements again. Note that this will not work if
- groups can occur inside anything else which can adjust stat_ptr,
- but currently they can't. */
-
-void
-lang_leave_group (void)
-{
- pop_stat_ptr ();
-}
-
-/* Add a new program header. This is called for each entry in a PHDRS
- command in a linker script. */
-
-void
-lang_new_phdr (const char *name,
- etree_type *type,
- bfd_boolean filehdr,
- bfd_boolean phdrs,
- etree_type *at,
- etree_type *flags)
-{
- struct lang_phdr *n, **pp;
- bfd_boolean hdrs;
-
- n = (struct lang_phdr *) stat_alloc (sizeof (struct lang_phdr));
- n->next = NULL;
- n->name = name;
- n->type = exp_get_value_int (type, 0, "program header type");
- n->filehdr = filehdr;
- n->phdrs = phdrs;
- n->at = at;
- n->flags = flags;
-
- hdrs = n->type == 1 && (phdrs || filehdr);
-
- for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next)
- if (hdrs
- && (*pp)->type == 1
- && !((*pp)->filehdr || (*pp)->phdrs))
- {
- einfo (_("%X%P:%S: PHDRS and FILEHDR are not supported"
- " when prior PT_LOAD headers lack them\n"), NULL);
- hdrs = FALSE;
- }
-
- *pp = n;
-}
-
-/* Record the program header information in the output BFD. FIXME: We
- should not be calling an ELF specific function here. */
-
-static void
-lang_record_phdrs (void)
-{
- unsigned int alc;
- asection **secs;
- lang_output_section_phdr_list *last;
- struct lang_phdr *l;
- lang_output_section_statement_type *os;
-
- alc = 10;
- secs = (asection **) xmalloc (alc * sizeof (asection *));
- last = NULL;
-
- for (l = lang_phdr_list; l != NULL; l = l->next)
- {
- unsigned int c;
- flagword flags;
- bfd_vma at;
-
- c = 0;
- for (os = &lang_output_section_statement.head->output_section_statement;
- os != NULL;
- os = os->next)
- {
- lang_output_section_phdr_list *pl;
-
- if (os->constraint < 0)
- continue;
-
- pl = os->phdrs;
- if (pl != NULL)
- last = pl;
- else
- {
- if (os->sectype == noload_section
- || os->bfd_section == NULL
- || (os->bfd_section->flags & SEC_ALLOC) == 0)
- continue;
-
- /* Don't add orphans to PT_INTERP header. */
- if (l->type == 3)
- continue;
-
- if (last == NULL)
- {
- lang_output_section_statement_type *tmp_os;
-
- /* If we have not run across a section with a program
- header assigned to it yet, then scan forwards to find
- one. This prevents inconsistencies in the linker's
- behaviour when a script has specified just a single
- header and there are sections in that script which are
- not assigned to it, and which occur before the first
- use of that header. See here for more details:
- http://sourceware.org/ml/binutils/2007-02/msg00291.html */
- for (tmp_os = os; tmp_os; tmp_os = tmp_os->next)
- if (tmp_os->phdrs)
- {
- last = tmp_os->phdrs;
- break;
- }
- if (last == NULL)
- einfo (_("%F%P: no sections assigned to phdrs\n"));
- }
- pl = last;
- }
-
- if (os->bfd_section == NULL)
- continue;
-
- for (; pl != NULL; pl = pl->next)
- {
- if (strcmp (pl->name, l->name) == 0)
- {
- if (c >= alc)
- {
- alc *= 2;
- secs = (asection **) xrealloc (secs,
- alc * sizeof (asection *));
- }
- secs[c] = os->bfd_section;
- ++c;
- pl->used = TRUE;
- }
- }
- }
-
- if (l->flags == NULL)
- flags = 0;
- else
- flags = exp_get_vma (l->flags, 0, "phdr flags");
-
- if (l->at == NULL)
- at = 0;
- else
- at = exp_get_vma (l->at, 0, "phdr load address");
-
- if (!bfd_record_phdr (link_info.output_bfd, l->type,
- l->flags != NULL, flags, l->at != NULL,
- at, l->filehdr, l->phdrs, c, secs))
- einfo (_("%F%P: bfd_record_phdr failed: %E\n"));
- }
-
- free (secs);
-
- /* Make sure all the phdr assignments succeeded. */
- for (os = &lang_output_section_statement.head->output_section_statement;
- os != NULL;
- os = os->next)
- {
- lang_output_section_phdr_list *pl;
-
- if (os->constraint < 0
- || os->bfd_section == NULL)
- continue;
-
- for (pl = os->phdrs;
- pl != NULL;
- pl = pl->next)
- if (!pl->used && strcmp (pl->name, "NONE") != 0)
- einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"),
- os->name, pl->name);
- }
-}
-
-/* Record a list of sections which may not be cross referenced. */
-
-void
-lang_add_nocrossref (lang_nocrossref_type *l)
-{
- struct lang_nocrossrefs *n;
-
- n = (struct lang_nocrossrefs *) xmalloc (sizeof *n);
- n->next = nocrossref_list;
- n->list = l;
- n->onlyfirst = FALSE;
- nocrossref_list = n;
-
- /* Set notice_all so that we get informed about all symbols. */
- link_info.notice_all = TRUE;
-}
-
-/* Record a section that cannot be referenced from a list of sections. */
-
-void
-lang_add_nocrossref_to (lang_nocrossref_type *l)
-{
- lang_add_nocrossref (l);
- nocrossref_list->onlyfirst = TRUE;
-}
-
-/* Overlay handling. We handle overlays with some static variables. */
-
-/* The overlay virtual address. */
-static etree_type *overlay_vma;
-/* And subsection alignment. */
-static etree_type *overlay_subalign;
-
-/* An expression for the maximum section size seen so far. */
-static etree_type *overlay_max;
-
-/* A list of all the sections in this overlay. */
-
-struct overlay_list {
- struct overlay_list *next;
- lang_output_section_statement_type *os;
-};
-
-static struct overlay_list *overlay_list;
-
-/* Start handling an overlay. */
-
-void
-lang_enter_overlay (etree_type *vma_expr, etree_type *subalign)
-{
- /* The grammar should prevent nested overlays from occurring. */
- ASSERT (overlay_vma == NULL
- && overlay_subalign == NULL
- && overlay_max == NULL);
-
- overlay_vma = vma_expr;
- overlay_subalign = subalign;
-}
-
-/* Start a section in an overlay. We handle this by calling
- lang_enter_output_section_statement with the correct VMA.
- lang_leave_overlay sets up the LMA and memory regions. */
-
-void
-lang_enter_overlay_section (const char *name)
-{
- struct overlay_list *n;
- etree_type *size;
-
- lang_enter_output_section_statement (name, overlay_vma, overlay_section,
- 0, overlay_subalign, 0, 0, 0);
-
- /* If this is the first section, then base the VMA of future
- sections on this one. This will work correctly even if `.' is
- used in the addresses. */
- if (overlay_list == NULL)
- overlay_vma = exp_nameop (ADDR, name);
-
- /* Remember the section. */
- n = (struct overlay_list *) xmalloc (sizeof *n);
- n->os = current_section;
- n->next = overlay_list;
- overlay_list = n;
-
- size = exp_nameop (SIZEOF, name);
-
- /* Arrange to work out the maximum section end address. */
- if (overlay_max == NULL)
- overlay_max = size;
- else
- overlay_max = exp_binop (MAX_K, overlay_max, size);
-}
-
-/* Finish a section in an overlay. There isn't any special to do
- here. */
-
-void
-lang_leave_overlay_section (fill_type *fill,
- lang_output_section_phdr_list *phdrs)
-{
- const char *name;
- char *clean, *s2;
- const char *s1;
- char *buf;
-
- name = current_section->name;
-
- /* For now, assume that DEFAULT_MEMORY_REGION is the run-time memory
- region and that no load-time region has been specified. It doesn't
- really matter what we say here, since lang_leave_overlay will
- override it. */
- lang_leave_output_section_statement (fill, DEFAULT_MEMORY_REGION, phdrs, 0);
-
- /* Define the magic symbols. */
-
- clean = (char *) xmalloc (strlen (name) + 1);
- s2 = clean;
- for (s1 = name; *s1 != '\0'; s1++)
- if (ISALNUM (*s1) || *s1 == '_')
- *s2++ = *s1;
- *s2 = '\0';
-
- buf = (char *) xmalloc (strlen (clean) + sizeof "__load_start_");
- sprintf (buf, "__load_start_%s", clean);
- lang_add_assignment (exp_provide (buf,
- exp_nameop (LOADADDR, name),
- FALSE));
-
- buf = (char *) xmalloc (strlen (clean) + sizeof "__load_stop_");
- sprintf (buf, "__load_stop_%s", clean);
- lang_add_assignment (exp_provide (buf,
- exp_binop ('+',
- exp_nameop (LOADADDR, name),
- exp_nameop (SIZEOF, name)),
- FALSE));
-
- free (clean);
-}
-
-/* Finish an overlay. If there are any overlay wide settings, this
- looks through all the sections in the overlay and sets them. */
-
-void
-lang_leave_overlay (etree_type *lma_expr,
- int nocrossrefs,
- fill_type *fill,
- const char *memspec,
- lang_output_section_phdr_list *phdrs,
- const char *lma_memspec)
-{
- lang_memory_region_type *region;
- lang_memory_region_type *lma_region;
- struct overlay_list *l;
- lang_nocrossref_type *nocrossref;
-
- lang_get_regions (&region, &lma_region,
- memspec, lma_memspec,
- lma_expr != NULL, FALSE);
-
- nocrossref = NULL;
-
- /* After setting the size of the last section, set '.' to end of the
- overlay region. */
- if (overlay_list != NULL)
- {
- overlay_list->os->update_dot = 1;
- overlay_list->os->update_dot_tree
- = exp_assign (".", exp_binop ('+', overlay_vma, overlay_max), FALSE);
- }
-
- l = overlay_list;
- while (l != NULL)
- {
- struct overlay_list *next;
-
- if (fill != NULL && l->os->fill == NULL)
- l->os->fill = fill;
-
- l->os->region = region;
- l->os->lma_region = lma_region;
-
- /* The first section has the load address specified in the
- OVERLAY statement. The rest are worked out from that.
- The base address is not needed (and should be null) if
- an LMA region was specified. */
- if (l->next == 0)
- {
- l->os->load_base = lma_expr;
- l->os->sectype = normal_section;
- }
- if (phdrs != NULL && l->os->phdrs == NULL)
- l->os->phdrs = phdrs;
-
- if (nocrossrefs)
- {
- lang_nocrossref_type *nc;
-
- nc = (lang_nocrossref_type *) xmalloc (sizeof *nc);
- nc->name = l->os->name;
- nc->next = nocrossref;
- nocrossref = nc;
- }
-
- next = l->next;
- free (l);
- l = next;
- }
-
- if (nocrossref != NULL)
- lang_add_nocrossref (nocrossref);
-
- overlay_vma = NULL;
- overlay_list = NULL;
- overlay_max = NULL;
- overlay_subalign = NULL;
-}
-
-/* Version handling. This is only useful for ELF. */
-
-/* If PREV is NULL, return first version pattern matching particular symbol.
- If PREV is non-NULL, return first version pattern matching particular
- symbol after PREV (previously returned by lang_vers_match). */
-
-static struct bfd_elf_version_expr *
-lang_vers_match (struct bfd_elf_version_expr_head *head,
- struct bfd_elf_version_expr *prev,
- const char *sym)
-{
- const char *c_sym;
- const char *cxx_sym = sym;
- const char *java_sym = sym;
- struct bfd_elf_version_expr *expr = NULL;
- enum demangling_styles curr_style;
-
- curr_style = CURRENT_DEMANGLING_STYLE;
- cplus_demangle_set_style (no_demangling);
- c_sym = bfd_demangle (link_info.output_bfd, sym, DMGL_NO_OPTS);
- if (!c_sym)
- c_sym = sym;
- cplus_demangle_set_style (curr_style);
-
- if (head->mask & BFD_ELF_VERSION_CXX_TYPE)
- {
- cxx_sym = bfd_demangle (link_info.output_bfd, sym,
- DMGL_PARAMS | DMGL_ANSI);
- if (!cxx_sym)
- cxx_sym = sym;
- }
- if (head->mask & BFD_ELF_VERSION_JAVA_TYPE)
- {
- java_sym = bfd_demangle (link_info.output_bfd, sym, DMGL_JAVA);
- if (!java_sym)
- java_sym = sym;
- }
-
- if (head->htab && (prev == NULL || prev->literal))
- {
- struct bfd_elf_version_expr e;
-
- switch (prev ? prev->mask : 0)
- {
- case 0:
- if (head->mask & BFD_ELF_VERSION_C_TYPE)
- {
- e.pattern = c_sym;
- expr = (struct bfd_elf_version_expr *)
- htab_find ((htab_t) head->htab, &e);
- while (expr && strcmp (expr->pattern, c_sym) == 0)
- if (expr->mask == BFD_ELF_VERSION_C_TYPE)
- goto out_ret;
- else
- expr = expr->next;
- }
- /* Fallthrough */
- case BFD_ELF_VERSION_C_TYPE:
- if (head->mask & BFD_ELF_VERSION_CXX_TYPE)
- {
- e.pattern = cxx_sym;
- expr = (struct bfd_elf_version_expr *)
- htab_find ((htab_t) head->htab, &e);
- while (expr && strcmp (expr->pattern, cxx_sym) == 0)
- if (expr->mask == BFD_ELF_VERSION_CXX_TYPE)
- goto out_ret;
- else
- expr = expr->next;
- }
- /* Fallthrough */
- case BFD_ELF_VERSION_CXX_TYPE:
- if (head->mask & BFD_ELF_VERSION_JAVA_TYPE)
- {
- e.pattern = java_sym;
- expr = (struct bfd_elf_version_expr *)
- htab_find ((htab_t) head->htab, &e);
- while (expr && strcmp (expr->pattern, java_sym) == 0)
- if (expr->mask == BFD_ELF_VERSION_JAVA_TYPE)
- goto out_ret;
- else
- expr = expr->next;
- }
- /* Fallthrough */
- default:
- break;
- }
- }
-
- /* Finally, try the wildcards. */
- if (prev == NULL || prev->literal)
- expr = head->remaining;
- else
- expr = prev->next;
- for (; expr; expr = expr->next)
- {
- const char *s;
-
- if (!expr->pattern)
- continue;
-
- if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
- break;
-
- if (expr->mask == BFD_ELF_VERSION_JAVA_TYPE)
- s = java_sym;
- else if (expr->mask == BFD_ELF_VERSION_CXX_TYPE)
- s = cxx_sym;
- else
- s = c_sym;
- if (fnmatch (expr->pattern, s, 0) == 0)
- break;
- }
-
- out_ret:
- if (c_sym != sym)
- free ((char *) c_sym);
- if (cxx_sym != sym)
- free ((char *) cxx_sym);
- if (java_sym != sym)
- free ((char *) java_sym);
- return expr;
-}
-
-/* Return NULL if the PATTERN argument is a glob pattern, otherwise,
- return a pointer to the symbol name with any backslash quotes removed. */
-
-static const char *
-realsymbol (const char *pattern)
-{
- const char *p;
- bfd_boolean changed = FALSE, backslash = FALSE;
- char *s, *symbol = (char *) xmalloc (strlen (pattern) + 1);
-
- for (p = pattern, s = symbol; *p != '\0'; ++p)
- {
- /* It is a glob pattern only if there is no preceding
- backslash. */
- if (backslash)
- {
- /* Remove the preceding backslash. */
- *(s - 1) = *p;
- backslash = FALSE;
- changed = TRUE;
- }
- else
- {
- if (*p == '?' || *p == '*' || *p == '[')
- {
- free (symbol);
- return NULL;
- }
-
- *s++ = *p;
- backslash = *p == '\\';
- }
- }
-
- if (changed)
- {
- *s = '\0';
- return symbol;
- }
- else
- {
- free (symbol);
- return pattern;
- }
-}
-
-/* This is called for each variable name or match expression. NEW_NAME is
- the name of the symbol to match, or, if LITERAL_P is FALSE, a glob
- pattern to be matched against symbol names. */
-
-struct bfd_elf_version_expr *
-lang_new_vers_pattern (struct bfd_elf_version_expr *orig,
- const char *new_name,
- const char *lang,
- bfd_boolean literal_p)
-{
- struct bfd_elf_version_expr *ret;
-
- ret = (struct bfd_elf_version_expr *) xmalloc (sizeof *ret);
- ret->next = orig;
- ret->symver = 0;
- ret->script = 0;
- ret->literal = TRUE;
- ret->pattern = literal_p ? new_name : realsymbol (new_name);
- if (ret->pattern == NULL)
- {
- ret->pattern = new_name;
- ret->literal = FALSE;
- }
-
- if (lang == NULL || strcasecmp (lang, "C") == 0)
- ret->mask = BFD_ELF_VERSION_C_TYPE;
- else if (strcasecmp (lang, "C++") == 0)
- ret->mask = BFD_ELF_VERSION_CXX_TYPE;
- else if (strcasecmp (lang, "Java") == 0)
- ret->mask = BFD_ELF_VERSION_JAVA_TYPE;
- else
- {
- einfo (_("%X%P: unknown language `%s' in version information\n"),
- lang);
- ret->mask = BFD_ELF_VERSION_C_TYPE;
- }
-
- return ldemul_new_vers_pattern (ret);
-}
-
-/* This is called for each set of variable names and match
- expressions. */
-
-struct bfd_elf_version_tree *
-lang_new_vers_node (struct bfd_elf_version_expr *globals,
- struct bfd_elf_version_expr *locals)
-{
- struct bfd_elf_version_tree *ret;
-
- ret = (struct bfd_elf_version_tree *) xcalloc (1, sizeof *ret);
- ret->globals.list = globals;
- ret->locals.list = locals;
- ret->match = lang_vers_match;
- ret->name_indx = (unsigned int) -1;
- return ret;
-}
-
-/* This static variable keeps track of version indices. */
-
-static int version_index;
-
-static hashval_t
-version_expr_head_hash (const void *p)
-{
- const struct bfd_elf_version_expr *e =
- (const struct bfd_elf_version_expr *) p;
-
- return htab_hash_string (e->pattern);
-}
-
-static int
-version_expr_head_eq (const void *p1, const void *p2)
-{
- const struct bfd_elf_version_expr *e1 =
- (const struct bfd_elf_version_expr *) p1;
- const struct bfd_elf_version_expr *e2 =
- (const struct bfd_elf_version_expr *) p2;
-
- return strcmp (e1->pattern, e2->pattern) == 0;
-}
-
-static void
-lang_finalize_version_expr_head (struct bfd_elf_version_expr_head *head)
-{
- size_t count = 0;
- struct bfd_elf_version_expr *e, *next;
- struct bfd_elf_version_expr **list_loc, **remaining_loc;
-
- for (e = head->list; e; e = e->next)
- {
- if (e->literal)
- count++;
- head->mask |= e->mask;
- }
-
- if (count)
- {
- head->htab = htab_create (count * 2, version_expr_head_hash,
- version_expr_head_eq, NULL);
- list_loc = &head->list;
- remaining_loc = &head->remaining;
- for (e = head->list; e; e = next)
- {
- next = e->next;
- if (!e->literal)
- {
- *remaining_loc = e;
- remaining_loc = &e->next;
- }
- else
- {
- void **loc = htab_find_slot ((htab_t) head->htab, e, INSERT);
-
- if (*loc)
- {
- struct bfd_elf_version_expr *e1, *last;
-
- e1 = (struct bfd_elf_version_expr *) *loc;
- last = NULL;
- do
- {
- if (e1->mask == e->mask)
- {
- last = NULL;
- break;
- }
- last = e1;
- e1 = e1->next;
- }
- while (e1 && strcmp (e1->pattern, e->pattern) == 0);
-
- if (last == NULL)
- {
- /* This is a duplicate. */
- /* FIXME: Memory leak. Sometimes pattern is not
- xmalloced alone, but in larger chunk of memory. */
- /* free (e->pattern); */
- free (e);
- }
- else
- {
- e->next = last->next;
- last->next = e;
- }
- }
- else
- {
- *loc = e;
- *list_loc = e;
- list_loc = &e->next;
- }
- }
- }
- *remaining_loc = NULL;
- *list_loc = head->remaining;
- }
- else
- head->remaining = head->list;
-}
-
-/* This is called when we know the name and dependencies of the
- version. */
-
-void
-lang_register_vers_node (const char *name,
- struct bfd_elf_version_tree *version,
- struct bfd_elf_version_deps *deps)
-{
- struct bfd_elf_version_tree *t, **pp;
- struct bfd_elf_version_expr *e1;
-
- if (name == NULL)
- name = "";
-
- if (link_info.version_info != NULL
- && (name[0] == '\0' || link_info.version_info->name[0] == '\0'))
- {
- einfo (_("%X%P: anonymous version tag cannot be combined"
- " with other version tags\n"));
- free (version);
- return;
- }
-
- /* Make sure this node has a unique name. */
- for (t = link_info.version_info; t != NULL; t = t->next)
- if (strcmp (t->name, name) == 0)
- einfo (_("%X%P: duplicate version tag `%s'\n"), name);
-
- lang_finalize_version_expr_head (&version->globals);
- lang_finalize_version_expr_head (&version->locals);
-
- /* Check the global and local match names, and make sure there
- aren't any duplicates. */
-
- for (e1 = version->globals.list; e1 != NULL; e1 = e1->next)
- {
- for (t = link_info.version_info; t != NULL; t = t->next)
- {
- struct bfd_elf_version_expr *e2;
-
- if (t->locals.htab && e1->literal)
- {
- e2 = (struct bfd_elf_version_expr *)
- htab_find ((htab_t) t->locals.htab, e1);
- while (e2 && strcmp (e1->pattern, e2->pattern) == 0)
- {
- if (e1->mask == e2->mask)
- einfo (_("%X%P: duplicate expression `%s'"
- " in version information\n"), e1->pattern);
- e2 = e2->next;
- }
- }
- else if (!e1->literal)
- for (e2 = t->locals.remaining; e2 != NULL; e2 = e2->next)
- if (strcmp (e1->pattern, e2->pattern) == 0
- && e1->mask == e2->mask)
- einfo (_("%X%P: duplicate expression `%s'"
- " in version information\n"), e1->pattern);
- }
- }
-
- for (e1 = version->locals.list; e1 != NULL; e1 = e1->next)
- {
- for (t = link_info.version_info; t != NULL; t = t->next)
- {
- struct bfd_elf_version_expr *e2;
-
- if (t->globals.htab && e1->literal)
- {
- e2 = (struct bfd_elf_version_expr *)
- htab_find ((htab_t) t->globals.htab, e1);
- while (e2 && strcmp (e1->pattern, e2->pattern) == 0)
- {
- if (e1->mask == e2->mask)
- einfo (_("%X%P: duplicate expression `%s'"
- " in version information\n"),
- e1->pattern);
- e2 = e2->next;
- }
- }
- else if (!e1->literal)
- for (e2 = t->globals.remaining; e2 != NULL; e2 = e2->next)
- if (strcmp (e1->pattern, e2->pattern) == 0
- && e1->mask == e2->mask)
- einfo (_("%X%P: duplicate expression `%s'"
- " in version information\n"), e1->pattern);
- }
- }
-
- version->deps = deps;
- version->name = name;
- if (name[0] != '\0')
- {
- ++version_index;
- version->vernum = version_index;
- }
- else
- version->vernum = 0;
-
- for (pp = &link_info.version_info; *pp != NULL; pp = &(*pp)->next)
- ;
- *pp = version;
-}
-
-/* This is called when we see a version dependency. */
-
-struct bfd_elf_version_deps *
-lang_add_vers_depend (struct bfd_elf_version_deps *list, const char *name)
-{
- struct bfd_elf_version_deps *ret;
- struct bfd_elf_version_tree *t;
-
- ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret);
- ret->next = list;
-
- for (t = link_info.version_info; t != NULL; t = t->next)
- {
- if (strcmp (t->name, name) == 0)
- {
- ret->version_needed = t;
- return ret;
- }
- }
-
- einfo (_("%X%P: unable to find version dependency `%s'\n"), name);
-
- ret->version_needed = NULL;
- return ret;
-}
-
-static void
-lang_do_version_exports_section (void)
-{
- struct bfd_elf_version_expr *greg = NULL, *lreg;
-
- LANG_FOR_EACH_INPUT_STATEMENT (is)
- {
- asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports");
- char *contents, *p;
- bfd_size_type len;
-
- if (sec == NULL)
- continue;
-
- len = sec->size;
- contents = (char *) xmalloc (len);
- if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len))
- einfo (_("%X%P: unable to read .exports section contents\n"), sec);
-
- p = contents;
- while (p < contents + len)
- {
- greg = lang_new_vers_pattern (greg, p, NULL, FALSE);
- p = strchr (p, '\0') + 1;
- }
-
- /* Do not free the contents, as we used them creating the regex. */
-
- /* Do not include this section in the link. */
- sec->flags |= SEC_EXCLUDE | SEC_KEEP;
- }
-
- lreg = lang_new_vers_pattern (NULL, "*", NULL, FALSE);
- lang_register_vers_node (command_line.version_exports_section,
- lang_new_vers_node (greg, lreg), NULL);
-}
-
-/* Evaluate LENGTH and ORIGIN parts of MEMORY spec */
-
-static void
-lang_do_memory_regions (void)
-{
- lang_memory_region_type *r = lang_memory_region_list;
-
- for (; r != NULL; r = r->next)
- {
- if (r->origin_exp)
- {
- exp_fold_tree_no_dot (r->origin_exp);
- if (expld.result.valid_p)
- {
- r->origin = expld.result.value;
- r->current = r->origin;
- }
- else
- einfo (_("%F%P: invalid origin for memory region %s\n"),
- r->name_list.name);
- }
- if (r->length_exp)
- {
- exp_fold_tree_no_dot (r->length_exp);
- if (expld.result.valid_p)
- r->length = expld.result.value;
- else
- einfo (_("%F%P: invalid length for memory region %s\n"),
- r->name_list.name);
- }
- }
-}
-
-void
-lang_add_unique (const char *name)
-{
- struct unique_sections *ent;
-
- for (ent = unique_section_list; ent; ent = ent->next)
- if (strcmp (ent->name, name) == 0)
- return;
-
- ent = (struct unique_sections *) xmalloc (sizeof *ent);
- ent->name = xstrdup (name);
- ent->next = unique_section_list;
- unique_section_list = ent;
-}
-
-/* Append the list of dynamic symbols to the existing one. */
-
-void
-lang_append_dynamic_list (struct bfd_elf_version_expr *dynamic)
-{
- if (link_info.dynamic_list)
- {
- struct bfd_elf_version_expr *tail;
- for (tail = dynamic; tail->next != NULL; tail = tail->next)
- ;
- tail->next = link_info.dynamic_list->head.list;
- link_info.dynamic_list->head.list = dynamic;
- }
- else
- {
- struct bfd_elf_dynamic_list *d;
-
- d = (struct bfd_elf_dynamic_list *) xcalloc (1, sizeof *d);
- d->head.list = dynamic;
- d->match = lang_vers_match;
- link_info.dynamic_list = d;
- }
-}
-
-/* Append the list of C++ typeinfo dynamic symbols to the existing
- one. */
-
-void
-lang_append_dynamic_list_cpp_typeinfo (void)
-{
- const char *symbols[] =
- {
- "typeinfo name for*",
- "typeinfo for*"
- };
- struct bfd_elf_version_expr *dynamic = NULL;
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE (symbols); i++)
- dynamic = lang_new_vers_pattern (dynamic, symbols [i], "C++",
- FALSE);
-
- lang_append_dynamic_list (dynamic);
-}
-
-/* Append the list of C++ operator new and delete dynamic symbols to the
- existing one. */
-
-void
-lang_append_dynamic_list_cpp_new (void)
-{
- const char *symbols[] =
- {
- "operator new*",
- "operator delete*"
- };
- struct bfd_elf_version_expr *dynamic = NULL;
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE (symbols); i++)
- dynamic = lang_new_vers_pattern (dynamic, symbols [i], "C++",
- FALSE);
-
- lang_append_dynamic_list (dynamic);
-}
-
-/* Scan a space and/or comma separated string of features. */
-
-void
-lang_ld_feature (char *str)
-{
- char *p, *q;
-
- p = str;
- while (*p)
- {
- char sep;
- while (*p == ',' || ISSPACE (*p))
- ++p;
- if (!*p)
- break;
- q = p + 1;
- while (*q && *q != ',' && !ISSPACE (*q))
- ++q;
- sep = *q;
- *q = 0;
- if (strcasecmp (p, "SANE_EXPR") == 0)
- config.sane_expr = TRUE;
- else
- einfo (_("%X%P: unknown feature `%s'\n"), p);
- *q = sep;
- p = q;
- }
-}
-
-/* Pretty print memory amount. */
-
-static void
-lang_print_memory_size (bfd_vma sz)
-{
- if ((sz & 0x3fffffff) == 0)
- printf ("%10" BFD_VMA_FMT "u GB", sz >> 30);
- else if ((sz & 0xfffff) == 0)
- printf ("%10" BFD_VMA_FMT "u MB", sz >> 20);
- else if ((sz & 0x3ff) == 0)
- printf ("%10" BFD_VMA_FMT "u KB", sz >> 10);
- else
- printf (" %10" BFD_VMA_FMT "u B", sz);
-}
-
-/* Implement --print-memory-usage: disply per region memory usage. */
-
-void
-lang_print_memory_usage (void)
-{
- lang_memory_region_type *r;
-
- printf ("Memory region Used Size Region Size %%age Used\n");
- for (r = lang_memory_region_list; r->next != NULL; r = r->next)
- {
- bfd_vma used_length = r->current - r->origin;
- double percent;
-
- printf ("%16s: ",r->name_list.name);
- lang_print_memory_size (used_length);
- lang_print_memory_size ((bfd_vma) r->length);
-
- percent = used_length * 100.0 / r->length;
-
- printf (" %6.2f%%\n", percent);
- }
-}
diff -rupN binutils-2.30/ld/ld.texinfo binutils-2.30-new/ld/ld.texinfo
--- binutils-2.30/ld/ld.texinfo 2018-01-19 11:15:20.000000000 +0100
+++ binutils-2.30-new/ld/ld.texinfo 2018-06-14 16:31:29.315219791 +0200
@@ -4001,6 +4001,12 @@ underscore), the linker will silently us
If the program references @samp{etext} but does not define it, the
linker will use the definition in the linker script.
+Note - the @code{PROVIDE} directive considers a common symbol to be
+defined, even though such a symbol could be combined with the symbol
+that the @code{PROVIDE} would create. This is particularly important
+when considering constructor and destructor list symbols such as
+@samp{__CTOR_LIST__} as these are often defined as common symbols.
+
@node PROVIDE_HIDDEN
@subsection PROVIDE_HIDDEN
@cindex PROVIDE_HIDDEN
diff -rupN binutils-2.30/ld/scripttempl/pep.sc binutils-2.30-new/ld/scripttempl/pep.sc
--- binutils-2.30/ld/scripttempl/pep.sc 2018-01-13 14:31:16.000000000 +0100
+++ binutils-2.30-new/ld/scripttempl/pep.sc 2018-06-14 16:31:29.316219791 +0200
@@ -99,8 +99,22 @@ SECTIONS
${RELOCATING+*(.glue_7)}
${CONSTRUCTING+. = ALIGN(8);}
${CONSTRUCTING+
- PROVIDE(___CTOR_LIST__ = .);
- PROVIDE(__CTOR_LIST__ = .);
+ /* Note: we always define __CTOR_LIST__ and ___CTOR_LIST__ here,
+ we do not PROVIDE them. This is because the ctors.o startup
+ code in libgcc defines them as common symbols, with the
+ expectation that they will be overridden by the definitions
+ here. If we PROVIDE the symbols then they will not be
+ overridden and global constructors will not be run.
+
+ This does mean that it is not possible for a user to define
+ their own __CTOR_LIST__ and __DTOR_LIST__ symbols. If that
+ ability is needed a custom linker script will have to be
+ used. (The custom script can just be a copy of this script
+ with the PROVIDE() qualifiers added).
+
+ See PR 22762 for more details. */
+ ___CTOR_LIST__ = .;
+ __CTOR_LIST__ = .;
LONG (-1); LONG (-1);
KEEP (*(.ctors));
KEEP (*(.ctor));
@@ -108,8 +122,10 @@ SECTIONS
LONG (0); LONG (0);
}
${CONSTRUCTING+
- PROVIDE(___DTOR_LIST__ = .);
- PROVIDE(__DTOR_LIST__ = .);
+ /* See comment about __CTOR_LIST__ above. The same reasoning
+ applies here too. */
+ ___DTOR_LIST__ = .;
+ __DTOR_LIST__ = .;
LONG (-1); LONG (-1);
KEEP (*(.dtors));
KEEP (*(.dtor));
diff -rupN binutils-2.30/ld/scripttempl/pe.sc binutils-2.30-new/ld/scripttempl/pe.sc
--- binutils-2.30/ld/scripttempl/pe.sc 2018-01-13 14:31:16.000000000 +0100
+++ binutils-2.30-new/ld/scripttempl/pe.sc 2018-06-14 16:31:29.316219791 +0200
@@ -98,8 +98,22 @@ SECTIONS
${RELOCATING+*(.glue_7t)}
${RELOCATING+*(.glue_7)}
${CONSTRUCTING+
- PROVIDE(___CTOR_LIST__ = .);
- PROVIDE(__CTOR_LIST__ = .);
+ /* Note: we always define __CTOR_LIST__ and ___CTOR_LIST__ here,
+ we do not PROVIDE them. This is because the ctors.o startup
+ code in libgcc defines them as common symbols, with the
+ expectation that they will be overridden by the definitions
+ here. If we PROVIDE the symbols then they will not be
+ overridden and global constructors will not be run.
+
+ This does mean that it is not possible for a user to define
+ their own __CTOR_LIST__ and __DTOR_LIST__ symbols. If that
+ ability is needed a custom linker script will have to be
+ used. (The custom script can just be a copy of this script
+ with the PROVIDE() qualifiers added).
+
+ See PR 22762 for more details. */
+ ___CTOR_LIST__ = .;
+ __CTOR_LIST__ = .;
LONG (-1);
KEEP(*(.ctors));
KEEP(*(.ctor));
@@ -107,8 +121,10 @@ SECTIONS
LONG (0);
}
${CONSTRUCTING+
- PROVIDE(___DTOR_LIST__ = .);
- PROVIDE(__DTOR_LIST__ = .);
+ /* See comment about __CTOR_LIST__ above. The same reasoning
+ applies here too. */
+ ___DTOR_LIST__ = .;
+ __DTOR_LIST__ = .;
LONG (-1);
KEEP(*(.dtors));
KEEP(*(.dtor));
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