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Fix AVX check

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Andreas Schwab 2011-07-22 14:33:47 -04:00 committed by Ulrich Drepper
parent a65c0b7a32
commit 1d002f2539
2 changed files with 21 additions and 6 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2011-07-21 Andreas Schwab <schwab@redhat.com>
* sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Fix last
change.
(_dl_x86_64_save_sse): Use correct AVX check.
2011-07-21 Ulrich Drepper <drepper@gmail.com> 2011-07-21 Ulrich Drepper <drepper@gmail.com>
* string/tester.c (test_strcat): Add tests for different alignments * string/tester.c (test_strcat): Add tests for different alignments

21
sysdeps/x86_64/dl-trampoline.S
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@ -150,7 +150,8 @@ L(have_avx):
cmpl $0x6, %eax cmpl $0x6, %eax
// Nonzero if SSE and AVX state saving is enabled. // Nonzero if SSE and AVX state saving is enabled.
sete %al sete %al
2: movl %eax, L(have_avx)(%rip) 2: leal -1(%eax,%eax), %eax
movl %eax, L(have_avx)(%rip)
cmpl $0, %eax cmpl $0, %eax
1: js L(no_avx) 1: js L(no_avx)
@ -183,11 +184,19 @@ _dl_x86_64_save_sse:
movl $1, %eax movl $1, %eax
cpuid cpuid
movq %r11,%rbx # Restore rbx movq %r11,%rbx # Restore rbx
movl $1, %eax xorl %eax, %eax
testl $(1 << 28), %ecx // AVX and XSAVE supported?
jne 2f testl $((1 << 28) | (1 << 27)), %ecx
negl %eax je 2f
2: movl %eax, L(have_avx)(%rip) xorl %ecx, %ecx
// Get XFEATURE_ENABLED_MASK
xgetbv
andl $0x6, %eax
cmpl $0x6, %eax
// Nonzero if SSE and AVX state saving is enabled.
sete %al
2: leal -1(%eax,%eax), %eax
movl %eax, L(have_avx)(%rip)
cmpl $0, %eax cmpl $0, %eax
1: js L(no_avx5) 1: js L(no_avx5)