glibc/sysdeps/x86_64
H.J. Lu 8d9c92017d [x86_64] Set DL_RUNTIME_UNALIGNED_VEC_SIZE to 8
Due to GCC bug:

   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58066

__tls_get_addr may be called with 8-byte stack alignment.  Although
this bug has been fixed in GCC 4.9.4, 5.3 and 6, we can't assume
that stack will be always aligned at 16 bytes.  Since SSE optimized
memory/string functions with aligned SSE register load and store are
used in the dynamic linker, we must set DL_RUNTIME_UNALIGNED_VEC_SIZE
to 8 so that _dl_runtime_resolve_sse will align the stack before
calling _dl_fixup:

Dump of assembler code for function _dl_runtime_resolve_sse:
   0x00007ffff7deea90 <+0>:	push   %rbx
   0x00007ffff7deea91 <+1>:	mov    %rsp,%rbx
   0x00007ffff7deea94 <+4>:	and    $0xfffffffffffffff0,%rsp
                                ^^^^^^^^^^^ Align stack to 16 bytes
   0x00007ffff7deea98 <+8>:	sub    $0x100,%rsp
   0x00007ffff7deea9f <+15>:	mov    %rax,0xc0(%rsp)
   0x00007ffff7deeaa7 <+23>:	mov    %rcx,0xc8(%rsp)
   0x00007ffff7deeaaf <+31>:	mov    %rdx,0xd0(%rsp)
   0x00007ffff7deeab7 <+39>:	mov    %rsi,0xd8(%rsp)
   0x00007ffff7deeabf <+47>:	mov    %rdi,0xe0(%rsp)
   0x00007ffff7deeac7 <+55>:	mov    %r8,0xe8(%rsp)
   0x00007ffff7deeacf <+63>:	mov    %r9,0xf0(%rsp)
   0x00007ffff7deead7 <+71>:	movaps %xmm0,(%rsp)
   0x00007ffff7deeadb <+75>:	movaps %xmm1,0x10(%rsp)
   0x00007ffff7deeae0 <+80>:	movaps %xmm2,0x20(%rsp)
   0x00007ffff7deeae5 <+85>:	movaps %xmm3,0x30(%rsp)
   0x00007ffff7deeaea <+90>:	movaps %xmm4,0x40(%rsp)
   0x00007ffff7deeaef <+95>:	movaps %xmm5,0x50(%rsp)
   0x00007ffff7deeaf4 <+100>:	movaps %xmm6,0x60(%rsp)
   0x00007ffff7deeaf9 <+105>:	movaps %xmm7,0x70(%rsp)

	[BZ #19679]
	* sysdeps/x86_64/dl-trampoline.S (DL_RUNIME_UNALIGNED_VEC_SIZE):
	Renamed to ...
	(DL_RUNTIME_UNALIGNED_VEC_SIZE): This.  Set to 8.
	(DL_RUNIME_RESOLVE_REALIGN_STACK): Renamed to ...
	(DL_RUNTIME_RESOLVE_REALIGN_STACK): This.  Updated.
	(DL_RUNIME_RESOLVE_REALIGN_STACK): Renamed to ...
	(DL_RUNTIME_RESOLVE_REALIGN_STACK): This.
	* sysdeps/x86_64/dl-trampoline.h
	(DL_RUNIME_RESOLVE_REALIGN_STACK): Renamed to ...
	(DL_RUNTIME_RESOLVE_REALIGN_STACK): This.
2016-02-19 15:45:09 -08:00
..
64
fpu Use PIC relocation in ALIAS_IMPL 2016-02-17 14:23:32 -08:00
multiarch Fixed build with assembler w/o AVX-512 support. 2016-01-19 14:34:53 +03:00
nptl 2016-01-20 Paul Pluzhnikov <ppluzhnikov@google.com> 2016-01-20 13:39:20 -08:00
x32 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Implies
Makefile Remove configure tests for -mno-vzeroupper support. 2015-10-09 16:03:48 +00:00
Versions
____longjmp_chk.S
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abort-instr.h
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dl-runtime.c
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dl-tlsdesc.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
dl-trampoline.S [x86_64] Set DL_RUNTIME_UNALIGNED_VEC_SIZE to 8 2016-02-19 15:45:09 -08:00
dl-trampoline.h [x86_64] Set DL_RUNTIME_UNALIGNED_VEC_SIZE to 8 2016-02-19 15:45:09 -08:00
ffs.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
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l10nflist.c
ldbl2mpn.c
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link-defines.sym
locale-defines.sym
localplt.data Support PLT and GOT references in local PIC check 2015-10-14 06:00:02 -07:00
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mp_clz_tab.c
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preconfigure
preconfigure.ac
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rshift.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
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stack-aliasing.h
stackguard-macros.h
stackinfo.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
start.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
stpcpy.S
strcasecmp.S
strcasecmp_l-nonascii.c
strcasecmp_l.S
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strlen.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
strncase.S
strncase_l-nonascii.c
strncase_l.S
strncmp.S
strnlen.S
strpbrk.S
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tls-macros.h
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tlsdesc.sym
tst-audit.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
tst-audit3.c
tst-audit4.c
tst-audit5.c
tst-audit6.c Modify several tests to use test-skeleton.c 2015-07-15 15:10:23 +05:30
tst-audit7.c
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tst-auditmod3a.c
tst-auditmod3b.c
tst-auditmod4a.c
tst-auditmod4b.c Add la_symbind32 to x86-64 audit tests 2015-07-07 06:09:29 -07:00
tst-auditmod5a.c
tst-auditmod5b.c Add la_symbind32 to x86-64 audit tests 2015-07-07 06:09:29 -07:00
tst-auditmod6a.c
tst-auditmod6b.c Add la_symbind32 to x86-64 audit tests 2015-07-07 06:09:29 -07:00
tst-auditmod6c.c Add la_symbind32 to x86-64 audit tests 2015-07-07 06:09:29 -07:00
tst-auditmod7a.c
tst-auditmod7b.c Add la_symbind32 to x86-64 audit tests 2015-07-07 06:09:29 -07:00
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tst-quad1pie.c
tst-quad2.c
tst-quad2pie.c
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tst-quadmod1pie.S
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tst-quadmod2pie.S
tst-split-dynreloc.c Fix dynamic linker issue with bind-now 2015-08-19 05:37:01 -07:00
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