H.J. Lu
207a72e298
x86-64: Properly align La_x86_64_retval to VEC_SIZE [BZ #22715 ] ...
_dl_runtime_profile calls _dl_call_pltexit, passing a pointer to
La_x86_64_retval which is allocated on stack. The lrv_vector0
field in La_x86_64_retval must be aligned to size of vector register.
When allocating stack space for La_x86_64_retval, we need to make sure
that the address of La_x86_64_retval + RV_VECTOR0_OFFSET is aligned to
VEC_SIZE. This patch checks the alignment of the lrv_vector0 field
and pads the stack space if needed.
Tested with x32 and x86-64 on SSE4, AVX and AVX512 machines. It fixed
FAIL: elf/tst-audit10
FAIL: elf/tst-audit4
FAIL: elf/tst-audit5
FAIL: elf/tst-audit6
FAIL: elf/tst-audit7
on x32 AVX512 machine.
[BZ #22715 ]
* sysdeps/x86_64/dl-trampoline.h (_dl_runtime_profile): Properly
align La_x86_64_retval to VEC_SIZE.
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207a72e298