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Merge in most PPC fixes.

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This commit is contained in:
cagney 2004-12-02 18:30:25 +00:00
parent f56d3db504
commit 43873a6422
5 changed files with 286 additions and 18 deletions
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31
gdb-6.3-framepczero-20040927.patch Normal file
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@ -0,0 +1,31 @@
2004-09-27 Andrew Cagney <cagney@gnu.org>
* frame.c (get_prev_frame): Stop backtrace when a zero PC and
successive normal frames.
Index: ./gdb/frame.c
===================================================================
RCS file: /cvs/src/src/gdb/frame.c,v
retrieving revision 1.191
diff -p -u -r1.191 frame.c
--- ./gdb/frame.c 1 Sep 2004 14:13:33 -0000 1.191
+++ ./gdb/frame.c 28 Sep 2004 02:45:58 -0000
@@ -1235,6 +1235,18 @@ get_prev_frame (struct frame_info *this_
return NULL;
}
+ if (this_frame->level > 0
+#if 0
+ && backtrace_past_zero_pc
+#endif
+ && get_frame_type (this_frame) == NORMAL_FRAME
+ && get_frame_type (get_next_frame (this_frame)) == NORMAL_FRAME
+ && get_frame_pc (this_frame) == 0)
+ {
+ frame_debug_got_null_frame (gdb_stdlog, this_frame, "zero PC");
+ return NULL;
+ }
+
return get_prev_frame_1 (this_frame);
}

28
gdb-6.3-ppc64displaysymbol-20041124.patch Normal file
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@ -0,0 +1,28 @@
2004-11-24 Andrew Cagney <cagney@gnu.org>
* printcmd.c (build_address_symbolic): Find a section for the
address.
--- ./gdb/printcmd.c.1 2004-11-24 17:54:27.316295608 -0500
+++ ./gdb/printcmd.c 2004-11-24 17:59:20.069790312 -0500
@@ -615,6 +615,20 @@
addr = overlay_mapped_address (addr, section);
}
}
+ /* To ensure that the symbol returned belongs to the correct setion
+ (and that the last [random] symbol from the previous section
+ isn't returned) try to find the section containing PC. First try
+ the overlay code (which by default returns NULL); and second try
+ the normal section code (which almost always succeeds). */
+ section = find_pc_overlay (addr);
+ if (section == NULL)
+ {
+ struct obj_section *obj_section = find_pc_section (addr);
+ if (obj_section == NULL)
+ section = NULL;
+ else
+ section = obj_section->the_bfd_section;
+ }
/* First try to find the address in the symbol table, then
in the minsyms. Take the closest one. */

99
gdb-6.3-ppc64section-20041026.patch Normal file
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@ -0,0 +1,99 @@
2004-10-26 Andrew Cagney <cagney@gnu.org>
* blockframe.c (find_pc_function): Use find_pc_section to find the
pc's section.
* block.c, symfile.c: Ditto.
*** ./gdb/blockframe.c.1 2004-10-26 21:21:46.517866240 -0400
--- ./gdb/blockframe.c 2004-10-26 21:24:16.345089040 -0400
***************
*** 288,294 ****
struct symbol *
find_pc_function (CORE_ADDR pc)
{
! return find_pc_sect_function (pc, find_pc_mapped_section (pc));
}
/* These variables are used to cache the most recent result
--- 288,311 ----
struct symbol *
find_pc_function (CORE_ADDR pc)
{
! struct bfd_section *section;
! struct symbol *symbol;
! /* To ensure that the symbol returned belongs to the correct setion
! (and that the last [random] symbol from the previous section
! isn't returned) try to find the section containing PC. First try
! the overlay code (which by default returns NULL); and second try
! the normal section code (which almost always succeeds). */
! section = find_pc_overlay (pc);
! if (section == NULL)
! {
! struct obj_section *obj_section = find_pc_section (pc);
! if (obj_section == NULL)
! section = NULL;
! else
! section = obj_section->the_bfd_section;
! }
! symbol = find_pc_sect_function (pc, section);
! return symbol;
}
/* These variables are used to cache the most recent result
--- ./gdb/symtab.c.1 2004-10-26 22:47:13.650423616 -0400
+++ ./gdb/symtab.c 2004-10-26 22:50:10.239577984 -0400
@@ -2176,7 +2176,20 @@
{
asection *section;
+ /* To ensure that the symbol returned belongs to the correct setion
+ (and that the last [random] symbol from the previous section
+ isn't returned) try to find the section containing PC. First try
+ the overlay code (which by default returns NULL); and second try
+ the normal section code (which almost always succeeds). */
section = find_pc_overlay (pc);
+ if (section == NULL)
+ {
+ struct obj_section *obj_section = find_pc_section (pc);
+ if (obj_section == NULL)
+ section = NULL;
+ else
+ section = obj_section->the_bfd_section;
+ }
if (pc_in_unmapped_range (pc, section))
pc = overlay_mapped_address (pc, section);
return find_pc_sect_line (pc, section, notcurrent);
--- ./gdb/block.c.1 2004-10-27 00:22:56.881319808 -0400
+++ ./gdb/block.c 2004-10-27 00:24:17.364084568 -0400
@@ -25,6 +25,7 @@
#include "symfile.h"
#include "gdb_obstack.h"
#include "cp-support.h"
+#include "objfiles.h"
/* This is used by struct block to store namespace-related info for
C++ files, namely using declarations and the current namespace in
@@ -153,7 +154,22 @@
struct block *
block_for_pc (CORE_ADDR pc)
{
- return block_for_pc_sect (pc, find_pc_mapped_section (pc));
+ struct bfd_section *section;
+ /* To ensure that the symbol returned belongs to the correct setion
+ (and that the last [random] symbol from the previous section
+ isn't returned) try to find the section containing PC. First try
+ the overlay code (which by default returns NULL); and second try
+ the normal section code (which almost always succeeds). */
+ section = find_pc_overlay (pc);
+ if (section == NULL)
+ {
+ struct obj_section *obj_section = find_pc_section (pc);
+ if (obj_section == NULL)
+ section = NULL;
+ else
+ section = obj_section->the_bfd_section;
+ }
+ return block_for_pc_sect (pc, section);
}
/* Now come some functions designed to deal with C++ namespace issues.

112
gdb-6.3-ppc64syscall-20040622.patch Normal file
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@ -0,0 +1,112 @@
2004-06-22 Andrew Cagney <cagney@gnu.org>
* rs6000-tdep.c (struct rs6000_framedata): Add field "func_start".
(skip_prologue): Delete local variable "orig_pc", use
"func_start". Add local variable "num_skip_linux_syscall_insn",
use to skip over first half of a GNU/Linux syscall and update
"func_start".
Index: ./gdb/rs6000-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/rs6000-tdep.c,v
retrieving revision 1.215
diff -p -u -r1.215 rs6000-tdep.c
--- ./gdb/rs6000-tdep.c 20 Jun 2004 17:18:06 -0000 1.215
+++ ./gdb/rs6000-tdep.c 22 Jun 2004 19:06:46 -0000
@@ -71,6 +71,7 @@
struct rs6000_framedata
{
+ CORE_ADDR func_start; /* True function start. */
int offset; /* total size of frame --- the distance
by which we decrement sp to allocate
the frame */
@@ -694,7 +695,6 @@ store_param_on_stack_p (unsigned long op
static CORE_ADDR
skip_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct rs6000_framedata *fdata)
{
- CORE_ADDR orig_pc = pc;
CORE_ADDR last_prologue_pc = pc;
CORE_ADDR li_found_pc = 0;
char buf[4];
@@ -712,6 +712,7 @@ skip_prologue (CORE_ADDR pc, CORE_ADDR l
int minimal_toc_loaded = 0;
int prev_insn_was_prologue_insn = 1;
int num_skip_non_prologue_insns = 0;
+ int num_skip_ppc64_gnu_linux_syscall_insn = 0;
int r0_contains_arg = 0;
const struct bfd_arch_info *arch_info = gdbarch_bfd_arch_info (current_gdbarch);
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
@@ -732,6 +733,7 @@ skip_prologue (CORE_ADDR pc, CORE_ADDR l
lim_pc = refine_prologue_limit (pc, lim_pc);
memset (fdata, 0, sizeof (struct rs6000_framedata));
+ fdata->func_start = pc;
fdata->saved_gpr = -1;
fdata->saved_fpr = -1;
fdata->saved_vr = -1;
@@ -760,6 +762,55 @@ skip_prologue (CORE_ADDR pc, CORE_ADDR l
break;
op = extract_signed_integer (buf, 4);
+ /* A PPC64 GNU/Linux system call function is split into two
+ sub-functions: a non-threaded fast-path (__NAME_nocancel)
+ which does not use a frame; and a threaded slow-path
+ (Lpseudo_cancel) that does create a frame. Ref:
+ nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
+
+ *INDENT-OFF*
+ NAME:
+ SINGLE_THREAD_P
+ bne- .Lpseudo_cancel
+ __NAME_nocancel:
+ li r0,162
+ sc
+ bnslr+
+ b 0x7fe014ef64 <.__syscall_error>
+ Lpseudo_cancel:
+ stdu r1,-128(r1)
+ ...
+ *INDENT-ON*
+
+ Unfortunatly, because the latter case uses a local label (not
+ in the symbol table) a PC in "Lpseudo_cancel" appears to be
+ in "__NAME_nocancel". The following code recognizes this,
+ adjusting FUNC_START to point to where "Lpseudo_cancel"
+ should be, and parsing the prologue sequence as if
+ "Lpseudo_cancel" was the entry point. */
+
+ if (((op & 0xffff0000) == 0x38000000 /* li r0,N */
+ && pc == fdata->func_start + 0
+ && num_skip_ppc64_gnu_linux_syscall_insn == 0)
+ || (op == 0x44000002 /* sc */
+ && pc == fdata->func_start + 4
+ && num_skip_ppc64_gnu_linux_syscall_insn == 1)
+ || (op == 0x4ca30020 /* bnslr+ */
+ && pc == fdata->func_start + 8
+ && num_skip_ppc64_gnu_linux_syscall_insn == 2))
+ {
+ num_skip_ppc64_gnu_linux_syscall_insn++;
+ continue;
+ }
+ else if ((op & 0xfc000003) == 0x48000000 /* b __syscall_error */
+ && pc == fdata->func_start + 12
+ && num_skip_ppc64_gnu_linux_syscall_insn == 3)
+ {
+ num_skip_ppc64_gnu_linux_syscall_insn = -1;
+ fdata->func_start = pc;
+ continue;
+ }
+
if ((op & 0xfc1fffff) == 0x7c0802a6)
{ /* mflr Rx */
/* Since shared library / PIC code, which needs to get its
@@ -913,7 +964,7 @@ skip_prologue (CORE_ADDR pc, CORE_ADDR l
fdata->frameless = 0;
/* Don't skip over the subroutine call if it is not within
the first three instructions of the prologue. */
- if ((pc - orig_pc) > 8)
+ if ((pc - fdata->func_start) > 8)
break;
op = read_memory_integer (pc + 4, 4);

34
gdb.spec
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@ -56,12 +56,7 @@ Patch4: gdb-6.3-rh-testlibunwind1fix-20041202.patch
####### ABI fixes and updates
#Broken: Patch19: gdb-6.1post-abi-ppccfi-nov2004.patch
#Broken: Patch20: gdb-6.1post-abi-ppc64-oct2004.patch
Patch21: gdb-6.1post-abi-ppc64syscall-jun2004.patch
#Broken: Patch23: gdb-6.1post-abi-ppc64main-aug2004.patch
Patch24: gdb-6.1post-frame-zeropc-sep2004.patch
Patch26: gdb-6.1post-abi-ppc64fpscr-oct2004.patch
Patch28: gdb-6.1post-abi-ppc64section-oct2004.patch
###### Testsuite merge, fixes, and local RH hack
# Get selftest working with sep-debug-info
@ -97,12 +92,8 @@ Patch79: gdb-6.1post-constructor-nov2004.patch
# Add --readnever hack, and gstack script
#Broken: Patch82: gdb-6.1post-readnever-nov2004.patch
Patch83: gdb-6.1post-gstack-nov2004.patch
# Add PPC register groups.
Patch84: gdb-6.1post-abi-ppcreggroups-nov2004.patch
# No longer a need to set .malloc on ppc64.
#Broken: Patch85: gdb-6.1post-abi-ppcmalloc-nov2004.patch
# display and x needed to look for a section symbol.
Patch86: gdb-6.1post-abi-ppc64displaysymbol-nov2004.patch
# Continue removing breakpoints even when failure occurs.
Patch87: gdb-6.1post-remove-bp-nov2004.patch
@ -110,8 +101,16 @@ Patch87: gdb-6.1post-remove-bp-nov2004.patch
Patch100: gdb-6.3-dwoppiecewarning-20041202.patch
Patch101: gdb-6.3-sigx86-20040621.patch
Patch102: gdb-6.3-sigsymtramp-20040621.patch
Patch103: gdb-6.3-sigppc-20040621.patch
Patch103: gdb-6.3-ppcsignals-20040621.patch
Patch104: gdb-6.3-ppcdotsolib-20041022.patch
Patch105: gdb-6.3-ppc64syscall-20040622.patch
Patch106: gdb-6.3-framepczero-20040927.patch
Patch107: gdb-6.3-ppc64fpscrhack-20041026.patch
Patch108: gdb-6.3-ppc64section-20041026.patch
Patch109: gdb-6.3-ppcreggroups-20041124.patch
Patch110: gdb-6.3-ppc64abi-20040621.patch
Patch111: gdb-6.3-ppc64displaysymbol-20041124.patch
%ifarch ia64
BuildRequires: ncurses-devel glibc-devel gcc make gzip texinfo dejagnu libunwind >= 0.96-3
@ -150,12 +149,13 @@ and printing their data.
%patch102 -p1
%patch103 -p1
%patch104 -p1
%patch21 -p1
%patch24 -p1
%patch25 -p1
%patch26 -p1
%patch28 -p1
%patch105 -p1
%patch106 -p1
%patch107 -p1
%patch108 -p1
%patch109 -p1
%patch110 -p1
%patch111 -p1
%patch50 -p1
@ -163,8 +163,6 @@ and printing their data.
%patch78 -p1
%patch79 -p1
%patch83 -p1
%patch84 -p1
%patch86 -p1
%patch87 -p1
# Change the version that gets printed at GDB startup, so it is RedHat