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| author | H.J. Lu <hjl.tools@gmail.com> | 2016-08-26 08:57:42 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2016-08-26 08:57:54 -0700 |
| commit | 0ac8ee53e8efbfd6e1c37094b4653f5c2dad65b5 (patch) | |
| tree | 5cc57f266e6790c60fb2b3fe27986b6cbd4c04f7 | |
| parent | 6e263a27c4d911a9f4b68ed14852601b5c53b83d (diff) | |
| download | glibc-0ac8ee53e8efbfd6e1c37094b4653f5c2dad65b5.tar glibc-0ac8ee53e8efbfd6e1c37094b4653f5c2dad65b5.tar.gz glibc-0ac8ee53e8efbfd6e1c37094b4653f5c2dad65b5.tar.bz2 glibc-0ac8ee53e8efbfd6e1c37094b4653f5c2dad65b5.zip | |
X86-64: Correct CFA in _dl_runtime_resolve
When stack is re-aligned in _dl_runtime_resolve, there is no need to
adjust CFA when allocating register save area on stack.
* sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve): Don't
adjust CFA when allocating register save area on re-aligned
stack.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | sysdeps/x86_64/dl-trampoline.h | 2 |
2 files changed, 8 insertions, 0 deletions
@@ -1,3 +1,9 @@ +2016-08-26 H.J. Lu <hongjiu.lu@intel.com> + + * sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve): Don't + adjust CFA when allocating register save area on re-aligned + stack. + 2016-08-26 Florian Weimer <fweimer@redhat.com> * string/tst-cmp.c: New test. diff --git a/sysdeps/x86_64/dl-trampoline.h b/sysdeps/x86_64/dl-trampoline.h index b90836ab13..8161f96b94 100644 --- a/sysdeps/x86_64/dl-trampoline.h +++ b/sysdeps/x86_64/dl-trampoline.h @@ -69,7 +69,9 @@ _dl_runtime_resolve: and $-VEC_SIZE, %RSP_LP #endif sub $REGISTER_SAVE_AREA, %RSP_LP +#if !DL_RUNTIME_RESOLVE_REALIGN_STACK cfi_adjust_cfa_offset(REGISTER_SAVE_AREA) +#endif # Preserve registers otherwise clobbered. movq %rax, REGISTER_SAVE_RAX(%rsp) movq %rcx, REGISTER_SAVE_RCX(%rsp) |