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* [Bug tdep/12352] New: Displaced stepping doesn't work for str pc, [Rd, #imm]
@ 2010-12-28 6:43 qiyao at gcc dot gnu.org
2010-12-29 11:56 ` [Bug tdep/12352] " qiyao at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: qiyao at gcc dot gnu.org @ 2010-12-28 6:43 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=12352
Summary: Displaced stepping doesn't work for str pc, [Rd, #imm]
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: tdep
AssignedTo: unassigned@sourceware.org
ReportedBy: qiyao@gcc.gnu.org
Created attachment 5171
--> http://sourceware.org/bugzilla/attachment.cgi?id=5171
test case
Steps to reproduce:
$ gcc -march=armv7-a -marm asm1.S -g -o asm.exe
$ ./gdb ~/asm.exe
(gdb) b test_str_pc
Breakpoint 1 at 0x837c: file asm1.S, line 10.
(gdb) run
Starting program: /home/yao/asm.exe
Breakpoint 1, main () at asm1.S:10
10 str pc, [sp, #0]
(gdb) set displaced-stepping on
(gdb) set debug displaced 1
(gdb) c
Continuing.
displaced: stepping process 18618 now
displaced: saved 0x8304: 5d f8 04 1b 6a 46 4d f8 04 2d 4d f8 04 0d df f8 14 c0
4d f8 04 cd 04 48 04 4b ff f7 e2 ef ff f7
displaced: stepping insn e58df000 at 0000837c
displaced: copying str insn e58df000
displaced: read r0 value 00000001
displaced: read r2 value bebe5d2c
displaced: read r4 value 00000000
displaced: read pc value 00008384
displaced: read r13 value bebe5bd4
displaced: writing r0 value 00008384
displaced: writing r2 value bebe5bd4
displaced: writing insn e58ff014 at 00008304
displaced: writing insn e59f4010 at 00008308
displaced: writing insn e044400f at 0000830c
displaced: writing insn e2844008 at 00008310
displaced: writing insn e0800004 at 00008314
displaced: writing insn e5820000 at 00008318
displaced: copy 0x837c->0x8304: displaced: displaced pc to 0x8304
displaced: run 0x8304: 14 f0 8f e5
displaced: restored 0x8304
Program received signal SIGILL, Illegal instruction.
main () at asm1.S:10
10 str pc, [sp, #0]
------------------------------------------
Run the same case on the other ARM board, SIGSEGV is got.
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* [Bug tdep/12352] Displaced stepping doesn't work for str pc, [Rd, #imm]
2010-12-28 6:43 [Bug tdep/12352] New: Displaced stepping doesn't work for str pc, [Rd, #imm] qiyao at gcc dot gnu.org
@ 2010-12-29 11:56 ` qiyao at gcc dot gnu.org
2011-01-06 8:29 ` qiyao at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: qiyao at gcc dot gnu.org @ 2010-12-29 11:56 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=12352
Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |armv7l-unknown-linux-gnueab
| |i
CC| |qiyao at gcc dot gnu.org
Host| |armv7l-unknown-linux-gnueab
| |i
Build| |armv7l-unknown-linux-gnueab
| |i
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* [Bug tdep/12352] Displaced stepping doesn't work for str pc, [Rd, #imm]
2010-12-28 6:43 [Bug tdep/12352] New: Displaced stepping doesn't work for str pc, [Rd, #imm] qiyao at gcc dot gnu.org
2010-12-29 11:56 ` [Bug tdep/12352] " qiyao at gcc dot gnu.org
@ 2011-01-06 8:29 ` qiyao at gcc dot gnu.org
2011-01-06 8:31 ` qiyao at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: qiyao at gcc dot gnu.org @ 2011-01-06 8:29 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=12352
--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> 2011-01-06 08:29:21 UTC ---
Patch is submitted http://sourceware.org/ml/gdb-patches/2010-12/msg00514.html
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* [Bug tdep/12352] Displaced stepping doesn't work for str pc, [Rd, #imm]
2010-12-28 6:43 [Bug tdep/12352] New: Displaced stepping doesn't work for str pc, [Rd, #imm] qiyao at gcc dot gnu.org
2010-12-29 11:56 ` [Bug tdep/12352] " qiyao at gcc dot gnu.org
2011-01-06 8:29 ` qiyao at gcc dot gnu.org
@ 2011-01-06 8:31 ` qiyao at gcc dot gnu.org
2011-02-15 14:27 ` cvs-commit at gcc dot gnu.org
2011-02-15 15:01 ` qiyao at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: qiyao at gcc dot gnu.org @ 2011-01-06 8:31 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=12352
Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at sourceware |qiyao at gcc dot gnu.org
|dot org |
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tdep/12352] Displaced stepping doesn't work for str pc, [Rd, #imm]
2010-12-28 6:43 [Bug tdep/12352] New: Displaced stepping doesn't work for str pc, [Rd, #imm] qiyao at gcc dot gnu.org
` (2 preceding siblings ...)
2011-01-06 8:31 ` qiyao at gcc dot gnu.org
@ 2011-02-15 14:27 ` cvs-commit at gcc dot gnu.org
2011-02-15 15:01 ` qiyao at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2011-02-15 14:27 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=12352
--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> 2011-02-15 14:26:37 UTC ---
CVSROOT: /cvs/src
Module name: src
Changes by: qiyao@sourceware.org 2011-02-15 14:26:34
Modified files:
gdb : ChangeLog arm-tdep.c
gdb/testsuite : ChangeLog
gdb/testsuite/gdb.arch: arm-disp-step.exp arm-disp-step.S
Log message:
2011-02-15 Yao Qi <yao@codesourcery.com>
PR tdep/12352
* arm-tdep.c (copy_ldr_str_ldrb_strb): Replace PC with SP in
order to store PC value on stack instead of text section.
2011-02-15 Yao Qi <yao@codesourcery.com>
PR tdep/12352
* gdb.arch/arm-disp-step.S : New test for str instruction.
* gdb.arch/arm-disp-step.exp : Likewise
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.12582&r2=1.12583
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/arm-tdep.c.diff?cvsroot=src&r1=1.325&r2=1.326
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&r1=1.2584&r2=1.2585
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.arch/arm-disp-step.exp.diff?cvsroot=src&r1=1.2&r2=1.3
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.arch/arm-disp-step.S.diff?cvsroot=src&r1=1.2&r2=1.3
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* [Bug tdep/12352] Displaced stepping doesn't work for str pc, [Rd, #imm]
2010-12-28 6:43 [Bug tdep/12352] New: Displaced stepping doesn't work for str pc, [Rd, #imm] qiyao at gcc dot gnu.org
` (3 preceding siblings ...)
2011-02-15 14:27 ` cvs-commit at gcc dot gnu.org
@ 2011-02-15 15:01 ` qiyao at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: qiyao at gcc dot gnu.org @ 2011-02-15 15:01 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=12352
Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #3 from Yao Qi <qiyao at gcc dot gnu.org> 2011-02-15 15:01:11 UTC ---
Patch is checked in to mainline. Close.
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2010-12-28 6:43 [Bug tdep/12352] New: Displaced stepping doesn't work for str pc, [Rd, #imm] qiyao at gcc dot gnu.org
2010-12-29 11:56 ` [Bug tdep/12352] " qiyao at gcc dot gnu.org
2011-01-06 8:29 ` qiyao at gcc dot gnu.org
2011-01-06 8:31 ` qiyao at gcc dot gnu.org
2011-02-15 14:27 ` cvs-commit at gcc dot gnu.org
2011-02-15 15:01 ` qiyao at gcc dot gnu.org
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