- Fixup for the PPC Power6/DFP instructions disassembly (BZ 230000).
- New testcase for the GCORE buffer overflow (for BZ 238285, formerly
235753).
- Related: rhbz#230000 rhbz#238285 rhbz#235753
This commit is contained in:
Jan Kratochvil
parent
1499556e03
commit
acb618c727
151
gdb-6.6-bz238285-gcore-strings-overflow.patch
Normal file
151
gdb-6.6-bz238285-gcore-strings-overflow.patch
Normal file
@ -0,0 +1,151 @@
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Failing on _FORTIFY_SOURCE=2 for `gdb.base/corefile.exp'.
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--- gdb-6.6/gdb/linux-nat.c-orig 2007-04-08 21:12:38.000000000 +0200
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+++ gdb-6.6/gdb/linux-nat.c 2007-04-09 20:05:43.000000000 +0200
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@@ -2838,7 +2838,9 @@ linux_nat_make_corefile_notes (bfd *obfd
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{
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struct linux_nat_corefile_thread_data thread_args;
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struct cleanup *old_chain;
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+ /* Length must be >= sizeof (prpsinfo_t.pr_fname). */
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char fname[16] = { '\0' };
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+ /* Length must be >= sizeof (prpsinfo_t.pr_psargs). */
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char psargs[80] = { '\0' };
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char *note_data = NULL;
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ptid_t current_ptid = inferior_ptid;
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@@ -2851,9 +2853,14 @@ linux_nat_make_corefile_notes (bfd *obfd
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strncpy (psargs, get_exec_file (0), sizeof (psargs));
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if (get_inferior_args ())
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{
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- strncat (psargs, " ", sizeof (psargs) - strlen (psargs));
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- strncat (psargs, get_inferior_args (),
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- sizeof (psargs) - strlen (psargs));
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+ /* linux_elfcore_write_prpsinfo () handles zero non-terminated
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+ strings right if they provide enough characters for its purposes.
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+ Handle to fully filled (=> zero non-terminated) strings here. */
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+ if (memchr (psargs, 0, sizeof (psargs)) != NULL)
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+ strncat (psargs, " ", sizeof (psargs) - strlen (psargs) - 1);
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+ if (memchr (psargs, 0, sizeof (psargs)) != NULL)
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+ strncat (psargs, get_inferior_args (),
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+ sizeof (psargs) - strlen (psargs) - 1);
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}
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note_data = (char *) linux_elfcore_write_prpsinfo (obfd, note_data,
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note_size, fname,
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2007-04-28 Jan Kratochvil <jan.kratochvil@redhat.com>
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* gdb.base/gcore-buffer-overflow.c, gdb.base/gcore-buffer-overflow.exp:
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New files.
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Index: ./gdb/testsuite/gdb.base/gcore-buffer-overflow.c
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===================================================================
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RCS file: gdb/testsuite/gdb.base/gcore-buffer-overflow.c
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diff -N gdb/testsuite/gdb.base/gcore-buffer-overflow.c
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--- /dev/null 1 Jan 1970 00:00:00 -0000
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+++ ./gdb/testsuite/gdb.base/gcore-buffer-overflow.c 28 Apr 2007 18:48:15 -0000
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@@ -0,0 +1,27 @@
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+/* Copyright 2007 Free Software Foundation, Inc.
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+
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+ This file is part of GDB.
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+
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+ This program is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published by
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+ the Free Software Foundation; either version 2 of the License, or (at
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+ your option) any later version.
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+
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+ This program is distributed in the hope that it will be useful, but
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+ WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ General Public License for more details.
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+
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+ You should have received a copy of the GNU General Public License
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+ along with this program; if not, write to the Free Software
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+ Foundation, Inc., 59 Temple Place - Suite 330,
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+ Boston, MA 02111-1307, USA. */
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+
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+/*
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+ * Test GDB's internal buffers safety for the GCORE command.
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+ */
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+
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+int main (void)
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+{
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+ return 0;
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+}
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Index: ./gdb/testsuite/gdb.base/gcore-buffer-overflow.exp
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===================================================================
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RCS file: gdb/testsuite/gdb.base/gcore-buffer-overflow.exp
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diff -N gdb/testsuite/gdb.base/gcore-buffer-overflow.exp
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--- /dev/null 1 Jan 1970 00:00:00 -0000
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+++ ./gdb/testsuite/gdb.base/gcore-buffer-overflow.exp 28 Apr 2007 18:48:15 -0000
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@@ -0,0 +1,70 @@
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+# Copyright 2007 Free Software Foundation, Inc.
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+
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+# This program is free software; you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License as published by
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+# the Free Software Foundation; either version 2 of the License, or
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+# (at your option) any later version.
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+#
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+# GNU General Public License for more details.
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+#
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+# You should have received a copy of the GNU General Public License
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+# along with this program; if not, write to the Free Software
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+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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+
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+# Please email any bugs, comments, and/or additions to this file to:
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+# bug-gdb@prep.ai.mit.edu
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+
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+# Test GDB's internal buffers safety for the GCORE command.
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+
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+if $tracelevel then {
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+ strace $tracelevel
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+}
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+
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+set prms_id 0
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+set bug_id 0
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+
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+set testfile "gcore-buffer-overflow"
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+set srcfile ${testfile}.c
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+# The ${binfile} basename needs to exceed 80 characters (`sizeof (psargs)')
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+# plus some additional data to overwrite the stack frame.
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+set pattern 01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789
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+set binfile ${objdir}/${subdir}/${testfile}-${pattern}
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+
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+if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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+ untested gcore.exp
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+ return -1
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+}
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+
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+# Start with a fresh gdb.
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+
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+gdb_exit
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+gdb_start
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+gdb_reinitialize_dir $srcdir/$subdir
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+gdb_load ${binfile}
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+
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+gdb_test "set args ${pattern}" \
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+ "" \
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+ "Set buffer exceeding arguments"
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+
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+if { ! [ runto_main ] } then {
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+ untested gcore-buffer-overflow.exp
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+ return -1
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+}
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+
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+set escapedfilename [string_to_regexp ${objdir}/${subdir}/gcore-buffer-overflow.test]
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+
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+set test "save a corefile"
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+gdb_test_multiple "gcore ${objdir}/${subdir}/gcore-buffer-overflow.test" $test {
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+ -re "Saved corefile ${escapedfilename}\[\r\n\]+$gdb_prompt $" {
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+ pass $test
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+ }
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+ -re "Can't create a corefile\[\r\n\]+$gdb_prompt $" {
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+ unsupported $test
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+ }
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+ eof {
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+ fail $test
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+ }
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+}
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@ -552,3 +552,189 @@ https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=232353
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/* The objfile containing the symbol whose location we're computing. */
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/* Used (only???) by thread local variables. The objfile in which
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https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=230000
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Fixes embarrassing errors in the ppc dfp instructions committed some
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time ago. IBM numbers bits in architecture manuals starting from zero
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in the most signifigant bit. Fields are marked by numbering their
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most signifigant bit too. This means some translating is required when
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filling out new powerpc_operand entries. You can't just plug IBM
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numbers into the shift counts. Also, Z_MASK is too big for
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instructions that take RMC operands.
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* ppc-opc.c (DCM, DGM, TE, RMC, R, SP, S): Correct shift.
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(Z2_MASK): Define.
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(powerpc_opcodes): Use Z2_MASK in all insns taking RMC operand.
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--- ./opcodes/ppc-opc.c 19 Apr 2007 01:39:31 -0000 1.91
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+++ ./opcodes/ppc-opc.c 20 Apr 2007 09:52:09 -0000
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@@ -530,8 +530,9 @@ const struct powerpc_operand powerpc_ope
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#define SIMM VD + 1
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{ 5, 16, NULL, NULL, PPC_OPERAND_SIGNED},
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- /* The UIMM field in a VX form instruction. */
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+ /* The UIMM field in a VX form instruction, and TE in Z form. */
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#define UIMM SIMM + 1
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+#define TE UIMM
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{ 5, 16, NULL, NULL, 0 },
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/* The SHB field in a VA form instruction. */
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@@ -564,31 +565,23 @@ const struct powerpc_operand powerpc_ope
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#define A_L MTMSRD_L
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{ 1, 16, NULL, NULL, PPC_OPERAND_OPTIONAL },
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- /* The DCM field in a Z form instruction. */
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-#define DCM MTMSRD_L + 1
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- { 6, 16, NULL, NULL, 0 },
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-
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- /* Likewise, the DGM field in a Z form instruction. */
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-#define DGM DCM + 1
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- { 6, 16, NULL, NULL, 0 },
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-
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-#define TE DGM + 1
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- { 5, 11, NULL, NULL, 0 },
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-
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-#define RMC TE + 1
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- { 2, 21, NULL, NULL, 0 },
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+#define RMC A_L + 1
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+ { 2, 9, NULL, NULL, 0 },
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#define R RMC + 1
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- { 1, 15, NULL, NULL, 0 },
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+ { 1, 16, NULL, NULL, 0 },
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#define SP R + 1
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- { 2, 11, NULL, NULL, 0 },
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+ { 2, 19, NULL, NULL, 0 },
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#define S SP + 1
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- { 1, 11, NULL, NULL, 0 },
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+ { 1, 20, NULL, NULL, 0 },
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/* SH field starting at bit position 16. */
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#define SH16 S + 1
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+ /* The DCM and DGM fields in a Z form instruction. */
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+#define DCM SH16
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+#define DGM DCM
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{ 6, 10, NULL, NULL, 0 },
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/* The L field in an X form with the RT field fixed instruction. */
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@@ -1683,6 +1676,7 @@ extract_tbr (unsigned long insn,
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/* The mask for a Z form instruction. */
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#define Z_MASK ZRC (0x3f, 0x1ff, 1)
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+#define Z2_MASK ZRC (0x3f, 0xff, 1)
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/* An X_MASK with the RA field fixed. */
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#define XRA_MASK (X_MASK | RA_MASK)
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@@ -4639,8 +4633,8 @@ const struct powerpc_opcode powerpc_opco
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{ "dadd", XRC(59,2,0), X_MASK, POWER6, { FRT, FRA, FRB } },
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{ "dadd.", XRC(59,2,1), X_MASK, POWER6, { FRT, FRA, FRB } },
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-{ "dqua", ZRC(59,3,0), Z_MASK, POWER6, { FRT, FRA, FRB, RMC } },
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-{ "dqua.", ZRC(59,3,1), Z_MASK, POWER6, { FRT, FRA, FRB, RMC } },
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||||
+{ "dqua", ZRC(59,3,0), Z2_MASK, POWER6, { FRT, FRA, FRB, RMC } },
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+{ "dqua.", ZRC(59,3,1), Z2_MASK, POWER6, { FRT, FRA, FRB, RMC } },
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||||
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{ "fdivs", A(59,18,0), AFRC_MASK, PPC, { FRT, FRA, FRB } },
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{ "fdivs.", A(59,18,1), AFRC_MASK, PPC, { FRT, FRA, FRB } },
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||||
@@ -4678,20 +4672,20 @@ const struct powerpc_opcode powerpc_opco
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||||
{ "dmul", XRC(59,34,0), X_MASK, POWER6, { FRT, FRA, FRB } },
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{ "dmul.", XRC(59,34,1), X_MASK, POWER6, { FRT, FRA, FRB } },
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||||
|
||||
-{ "drrnd", ZRC(59,35,0), Z_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
-{ "drrnd.", ZRC(59,35,1), Z_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
+{ "drrnd", ZRC(59,35,0), Z2_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
+{ "drrnd.", ZRC(59,35,1), Z2_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
|
||||
{ "dscli", ZRC(59,66,0), Z_MASK, POWER6, { FRT, FRA, SH16 } },
|
||||
{ "dscli.", ZRC(59,66,1), Z_MASK, POWER6, { FRT, FRA, SH16 } },
|
||||
|
||||
-{ "dquai", ZRC(59,67,0), Z_MASK, POWER6, { TE, FRT, FRB, RMC } },
|
||||
-{ "dquai.", ZRC(59,67,1), Z_MASK, POWER6, { TE, FRT, FRB, RMC } },
|
||||
+{ "dquai", ZRC(59,67,0), Z2_MASK, POWER6, { TE, FRT, FRB, RMC } },
|
||||
+{ "dquai.", ZRC(59,67,1), Z2_MASK, POWER6, { TE, FRT, FRB, RMC } },
|
||||
|
||||
{ "dscri", ZRC(59,98,0), Z_MASK, POWER6, { FRT, FRA, SH16 } },
|
||||
{ "dscri.", ZRC(59,98,1), Z_MASK, POWER6, { FRT, FRA, SH16 } },
|
||||
|
||||
-{ "drintx", ZRC(59,99,0), Z_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
-{ "drintx.", ZRC(59,99,1), Z_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
+{ "drintx", ZRC(59,99,0), Z2_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
+{ "drintx.", ZRC(59,99,1), Z2_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
|
||||
{ "dcmpo", X(59,130), X_MASK, POWER6, { BF, FRA, FRB } },
|
||||
|
||||
@@ -4699,8 +4693,8 @@ const struct powerpc_opcode powerpc_opco
|
||||
{ "dtstdc", Z(59,194), Z_MASK, POWER6, { BF, FRA, DCM } },
|
||||
{ "dtstdg", Z(59,226), Z_MASK, POWER6, { BF, FRA, DGM } },
|
||||
|
||||
-{ "drintn", ZRC(59,227,0), Z_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
-{ "drintn.", ZRC(59,227,1), Z_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
+{ "drintn", ZRC(59,227,0), Z2_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
+{ "drintn.", ZRC(59,227,1), Z2_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
|
||||
{ "dctdp", XRC(59,258,0), X_MASK, POWER6, { FRT, FRB } },
|
||||
{ "dctdp.", XRC(59,258,1), X_MASK, POWER6, { FRT, FRB } },
|
||||
@@ -4766,8 +4760,8 @@ const struct powerpc_opcode powerpc_opco
|
||||
{ "daddq", XRC(63,2,0), X_MASK, POWER6, { FRT, FRA, FRB } },
|
||||
{ "daddq.", XRC(63,2,1), X_MASK, POWER6, { FRT, FRA, FRB } },
|
||||
|
||||
-{ "dquaq", ZRC(63,3,0), Z_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
-{ "dquaq.", ZRC(63,3,1), Z_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
+{ "dquaq", ZRC(63,3,0), Z2_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
+{ "dquaq.", ZRC(63,3,1), Z2_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
|
||||
{ "fcpsgn", XRC(63,8,0), X_MASK, POWER6, { FRT, FRA, FRB } },
|
||||
{ "fcpsgn.", XRC(63,8,1), X_MASK, POWER6, { FRT, FRA, FRB } },
|
||||
@@ -4842,8 +4836,8 @@ const struct powerpc_opcode powerpc_opco
|
||||
{ "dmulq", XRC(63,34,0), X_MASK, POWER6, { FRT, FRA, FRB } },
|
||||
{ "dmulq.", XRC(63,34,1), X_MASK, POWER6, { FRT, FRA, FRB } },
|
||||
|
||||
-{ "drrndq", ZRC(63,35,0), Z_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
-{ "drrndq.", ZRC(63,35,1), Z_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
+{ "drrndq", ZRC(63,35,0), Z2_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
+{ "drrndq.", ZRC(63,35,1), Z2_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
|
||||
{ "mtfsb1", XRC(63,38,0), XRARB_MASK, COM, { BT } },
|
||||
{ "mtfsb1.", XRC(63,38,1), XRARB_MASK, COM, { BT } },
|
||||
@@ -4856,8 +4850,8 @@ const struct powerpc_opcode powerpc_opco
|
||||
{ "dscliq", ZRC(63,66,0), Z_MASK, POWER6, { FRT, FRA, SH16 } },
|
||||
{ "dscliq.", ZRC(63,66,1), Z_MASK, POWER6, { FRT, FRA, SH16 } },
|
||||
|
||||
-{ "dquaiq", ZRC(63,67,0), Z_MASK, POWER6, { TE, FRT, FRB, RMC } },
|
||||
-{ "dquaiq.", ZRC(63,67,1), Z_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
+{ "dquaiq", ZRC(63,67,0), Z2_MASK, POWER6, { TE, FRT, FRB, RMC } },
|
||||
+{ "dquaiq.", ZRC(63,67,1), Z2_MASK, POWER6, { FRT, FRA, FRB, RMC } },
|
||||
|
||||
{ "mtfsb0", XRC(63,70,0), XRARB_MASK, COM, { BT } },
|
||||
{ "mtfsb0.", XRC(63,70,1), XRARB_MASK, COM, { BT } },
|
||||
@@ -4868,8 +4862,8 @@ const struct powerpc_opcode powerpc_opco
|
||||
{ "dscriq", ZRC(63,98,0), Z_MASK, POWER6, { FRT, FRA, SH16 } },
|
||||
{ "dscriq.", ZRC(63,98,1), Z_MASK, POWER6, { FRT, FRA, SH16 } },
|
||||
|
||||
-{ "drintxq", ZRC(63,99,0), Z_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
-{ "drintxq.",ZRC(63,99,1), Z_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
+{ "drintxq", ZRC(63,99,0), Z2_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
+{ "drintxq.",ZRC(63,99,1), Z2_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
|
||||
{ "dcmpoq", X(63,130), X_MASK, POWER6, { BF, FRA, FRB } },
|
||||
|
||||
@@ -4883,8 +4877,8 @@ const struct powerpc_opcode powerpc_opco
|
||||
{ "dtstdcq", Z(63,194), Z_MASK, POWER6, { BF, FRA, DCM } },
|
||||
{ "dtstdgq", Z(63,226), Z_MASK, POWER6, { BF, FRA, DGM } },
|
||||
|
||||
-{ "drintnq", ZRC(63,227,0), Z_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
-{ "drintnq.",ZRC(63,227,1), Z_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
+{ "drintnq", ZRC(63,227,0), Z2_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
+{ "drintnq.",ZRC(63,227,1), Z2_MASK, POWER6, { R, FRT, FRB, RMC } },
|
||||
|
||||
{ "dctqpq", XRC(63,258,0), X_MASK, POWER6, { FRT, FRB } },
|
||||
{ "dctqpq.", XRC(63,258,1), X_MASK, POWER6, { FRT, FRB } },
|
||||
|
||||
--
|
||||
Alan Modra
|
||||
IBM OzLabs - Linux Technology Centre
|
||||
|
||||
12
gdb.spec
12
gdb.spec
@ -11,7 +11,7 @@ Name: gdb
|
||||
Version: 6.6
|
||||
|
||||
# The release always contains a leading reserved number, start it at 1.
|
||||
Release: 13%{?dist}
|
||||
Release: 14%{?dist}
|
||||
|
||||
License: GPL
|
||||
Group: Development/Debuggers
|
||||
@ -323,8 +323,8 @@ Patch240: gdb-6.6-bz225783-prelink-path.patch
|
||||
# Fix debugging GDB itself - the compiled in source files paths (BZ 225783).
|
||||
Patch241: gdb-6.6-bz225783-gdb-debuginfo-paths.patch
|
||||
|
||||
# Fix harmless GCORE stack buffer overflow, by _FORTIFY_SOURCE=2 (BZ 235753).
|
||||
Patch243: gdb-6.6-bz235753-gcore-strings-overflow.patch
|
||||
# Fix harmless GCORE stack buffer overflow, by _FORTIFY_SOURCE=2 (BZ 238285).
|
||||
Patch243: gdb-6.6-bz238285-gcore-strings-overflow.patch
|
||||
|
||||
# Use the runtime variant of `libunwind-ARCH.so.7' rather than the `.so' one.
|
||||
Patch244: gdb-6.6-libunwind-major-version.patch
|
||||
@ -637,6 +637,10 @@ fi
|
||||
# don't include the files in include, they are part of binutils
|
||||
|
||||
%changelog
|
||||
* Sat Apr 28 2007 Jan Kratochvil <jan.kratochvil@redhat.com> - 6.6-14
|
||||
- Fixup for the PPC Power6/DFP instructions disassembly (BZ 230000).
|
||||
- New testcase for the GCORE buffer overflow (for BZ 238285, formerly 235753).
|
||||
|
||||
* Wed Apr 25 2007 Jan Kratochvil <jan.kratochvil@redhat.com> - 6.6-13
|
||||
- Fix `gcore' command for 32bit PPC inferiors on 64bit PPC hosts (BZ 232015).
|
||||
|
||||
@ -648,7 +652,7 @@ fi
|
||||
- Package review, analysed by Ralf Corsepius (BZ 225783).
|
||||
- Fix prelink(8) testcase for non-root $PATH missing `/usr/sbin' (BZ 225783).
|
||||
- Fix debugging GDB itself - the compiled in source files paths (BZ 225783).
|
||||
- Fix harmless GCORE stack buffer overflow, by _FORTIFY_SOURCE=2 (BZ 235753).
|
||||
- Fix harmless GCORE stack buffer overflow, by _FORTIFY_SOURCE=2 (BZ 238285).
|
||||
- Fix XML support - the build was missing `expat-devel'.
|
||||
- Updated the `info' files handling by the spec file.
|
||||
- Building now with the standard Fedora code protections - _FORTIFY_SOURCE=2.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user