| 28ea229bb29f3ee82991ca8b5ac5f7a9b7b89fdc |
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04-Sep-2014 |
Elliott Hughes <enh@google.com> |
Don't mask out SA_RESTORER from sa_flags.
glibc doesn't do this, and we probably shouldn't either.
Bug: 16703540
Bug: 17436734
(cherry picked from commit afe58ad9892de27a7acb0aaded6312ee0f958314)
Change-Id: Iada5d0ae814f438cb276f056b2b5e3675f0e3666
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| e5e61a0a920a8e6560735b2e565c3bd7a1e35ba5 |
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17-Sep-2014 |
Elliott Hughes <enh@google.com> |
Use the kernel's sa_restorer for aarch64.
gdb was happy with what we had, but libgcc and libunwind weren't.
libgcc is happy with the kernel's restorer (because of the extra nop),
though libunwind looks like it's going to need code changes regardless.
We could make our restorer more like the kernel's one, but why bother
when we can just let the kernel supply the canonical one?
Bug: 17436734
(cherry picked from commit 1cff9a89645a8f362a9ce19c7f9544e98c1fd9e7)
Change-Id: Ie13d73fd97395e1979a67c2294e036a97c50000d
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| 7dc2b7b30ddc158a5e7aa6945526eb65d354b96c |
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11-Sep-2014 |
Elliott Hughes <enh@google.com> |
Fix signal trampolines.
* LP32 should use sa_restorer too. gdb expects this, and future (>= 3.15) x86
kernels will apparently stop supporting the case where SA_RESTORER isn't
set.
* gdb and libunwind care about the exact instruction sequences, so we need to
modify the code slightly in a few cases to match what they're looking for.
* gdb also cares about the exact function names (for some architectures),
so we need to use __restore and __restore_rt rather than __sigreturn and
__rt_sigreturn.
* It's possible that we don't have a VDSO; dl_iterate_phdr shouldn't assume
that getauxval(AT_SYSINFO_EHDR) will return a non-null pointer.
This fixes unwinding through a signal handler in gdb for all architectures.
It doesn't fix libunwind for arm and arm64. I'll keep investigating that...
(cherry picked from commit 36f451a6d93b6807944d99fa23396e039c47e845)
Bug: 17436734
Change-Id: Ic1ea1184db6655c5d96180dc07bcc09628e647cb
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| 1cff9a89645a8f362a9ce19c7f9544e98c1fd9e7 |
|
17-Sep-2014 |
Elliott Hughes <enh@google.com> |
Use the kernel's sa_restorer for aarch64.
gdb was happy with what we had, but libgcc and libunwind weren't.
libgcc is happy with the kernel's restorer (because of the extra nop),
though libunwind looks like it's going to need code changes regardless.
We could make our restorer more like the kernel's one, but why bother
when we can just let the kernel supply the canonical one?
Bug: 17436734
Change-Id: I330fa5e68f23b1cf8133aa552896657b0b873ed3
|
| 36f451a6d93b6807944d99fa23396e039c47e845 |
|
11-Sep-2014 |
Elliott Hughes <enh@google.com> |
Fix signal trampolines.
* LP32 should use sa_restorer too. gdb expects this, and future (>= 3.15) x86
kernels will apparently stop supporting the case where SA_RESTORER isn't
set.
* gdb and libunwind care about the exact instruction sequences, so we need to
modify the code slightly in a few cases to match what they're looking for.
* gdb also cares about the exact function names (for some architectures),
so we need to use __restore and __restore_rt rather than __sigreturn and
__rt_sigreturn.
* It's possible that we don't have a VDSO; dl_iterate_phdr shouldn't assume
that getauxval(AT_SYSINFO_EHDR) will return a non-null pointer.
This fixes unwinding through a signal handler in gdb for all architectures.
It doesn't fix libunwind for arm and arm64. I'll keep investigating that...
Bug: 17436734
Change-Id: Ic1ea1184db6655c5d96180dc07bcc09628e647cb
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| afe58ad9892de27a7acb0aaded6312ee0f958314 |
|
04-Sep-2014 |
Elliott Hughes <enh@google.com> |
Don't mask out SA_RESTORER from sa_flags.
glibc doesn't do this, and we probably shouldn't either.
Bug: 16703540
Change-Id: Id5b93c3782e34024a9916463348e8f3caff191bf
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| 46f3db6bb81b3368783ea3748df46c2d7d2f7b2f |
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31-Jan-2014 |
Chris Dearman <chris.dearman@imgtec.com> |
[MIPS] SA_RESTORER support is not needed for MIPS
Change-Id: I1c000c94973e811193c80c9770da4f3157594f90
Signed-off-by: Chris Dearman <chris.dearman@imgtec.com>
Signed-off-by: Duane Sand <duane.sand@imgtec.com>
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| c7e9b2331771e5e87c34a8ee3dc6cc41d35b02fe |
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17-Oct-2013 |
Elliott Hughes <enh@google.com> |
Fix sigaction(3) for 64-bit.
Also clean up <signal.h> and revert the hacks that were necessary
for 64-bit in linker/debugger.cpp until now.
Change-Id: I3b0554ca8a49ee1c97cda086ce2c1954ebc11892
|