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Merge branch 'master' of ssh://sourceware.org/git/glibc
Conflicts: ChangeLog
This commit is contained in:
Ulrich Drepper
commit
2ee5518515
@ -14,6 +14,12 @@
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change.
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(_dl_x86_64_save_sse): Use correct AVX check.
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2011-07-21 Liubov Dmitrieva <liubov.dmitrieva@gmail.com>
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* sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S: Fix overfow
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bug in strncpy/strncat.
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* sysdeps/x86_64/multiarch/strcpy-ssse3.S: Likewise.
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2011-07-21 Ulrich Drepper <drepper@gmail.com>
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* string/tester.c (test_strcat): Add tests for different alignments
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@ -52,24 +52,28 @@ ENTRY (STRCPY)
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# endif
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and $15, %rcx
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jz L(SourceStringAlignmentZero)
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and $63, %rcx
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cmp $32, %rcx
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jbe L(SourceStringAlignmentLess32)
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and $-16, %rsi
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and $15, %rcx
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pxor %xmm0, %xmm0
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pxor %xmm1, %xmm1
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pcmpeqb (%rsi), %xmm1
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# ifdef USE_AS_STRNCPY
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add %rcx, %r8
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# endif
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pmovmskb %xmm1, %rdx
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shr %cl, %rdx
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# ifdef USE_AS_STRNCPY
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# if defined USE_AS_STPCPY || defined USE_AS_STRCAT
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cmp $16, %r8
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mov $16, %r10
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sub %rcx, %r10
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cmp %r10, %r8
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# else
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cmp $17, %r8
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mov $17, %r10
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sub %rcx, %r10
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cmp %r10, %r8
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# endif
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jbe L(CopyFrom1To16BytesTailCase2OrCase3)
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# endif
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@ -78,12 +82,10 @@ ENTRY (STRCPY)
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pcmpeqb 16(%rsi), %xmm0
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pmovmskb %xmm0, %rdx
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# ifdef USE_AS_STRNCPY
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# if defined USE_AS_STPCPY || defined USE_AS_STRCAT
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cmp $32, %r8
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# else
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cmp $33, %r8
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# endif
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add $16, %r10
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cmp %r10, %r8
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jbe L(CopyFrom1To32BytesCase2OrCase3)
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# endif
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test %rdx, %rdx
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@ -92,11 +94,13 @@ ENTRY (STRCPY)
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movdqu (%rsi, %rcx), %xmm1 /* copy 16 bytes */
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movdqu %xmm1, (%rdi)
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sub %rcx, %rdi
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/* If source adress alignment != destination adress alignment */
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.p2align 4
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L(Unalign16Both):
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sub %rcx, %rdi
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# ifdef USE_AS_STRNCPY
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add %rcx, %r8
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# endif
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mov $16, %rcx
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movdqa (%rsi, %rcx), %xmm1
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movaps 16(%rsi, %rcx), %xmm2
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@ -288,9 +292,10 @@ L(Unaligned64Leave):
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/* If source adress alignment == destination adress alignment */
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L(SourceStringAlignmentZero):
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L(SourceStringAlignmentLess32):
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pxor %xmm0, %xmm0
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movdqa (%rsi), %xmm1
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movdqu (%rsi), %xmm1
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movdqu 16(%rsi), %xmm2
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pcmpeqb %xmm1, %xmm0
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pmovmskb %xmm0, %rdx
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@ -305,7 +310,7 @@ L(SourceStringAlignmentZero):
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test %rdx, %rdx
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jnz L(CopyFrom1To16BytesTail1)
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pcmpeqb 16(%rsi), %xmm0
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pcmpeqb %xmm2, %xmm0
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movdqu %xmm1, (%rdi)
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pmovmskb %xmm0, %rdx
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@ -319,6 +324,9 @@ L(SourceStringAlignmentZero):
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# endif
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test %rdx, %rdx
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jnz L(CopyFrom1To32Bytes1)
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and $-16, %rsi
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and $15, %rcx
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jmp L(Unalign16Both)
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/*------End of main part with loops---------------------*/
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@ -335,9 +343,6 @@ L(CopyFrom1To16Bytes):
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# endif
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.p2align 4
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L(CopyFrom1To16BytesTail):
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# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
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sub %rcx, %r8
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# endif
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add %rcx, %rsi
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bsf %rdx, %rdx
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BRANCH_TO_JMPTBL_ENTRY (L(ExitTable), %rdx, 4)
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@ -355,9 +360,6 @@ L(CopyFrom1To16BytesTail1):
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.p2align 4
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L(CopyFrom1To32Bytes):
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# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
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sub %rcx, %r8
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# endif
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bsf %rdx, %rdx
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add %rcx, %rsi
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add $16, %rdx
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@ -465,7 +467,6 @@ L(CopyFrom1To16BytesCase2):
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.p2align 4
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L(CopyFrom1To32BytesCase2):
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sub %rcx, %r8
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add %rcx, %rsi
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bsf %rdx, %rdx
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add $16, %rdx
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@ -475,7 +476,6 @@ L(CopyFrom1To32BytesCase2):
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BRANCH_TO_JMPTBL_ENTRY (L(ExitStrncpyTable), %r8, 4)
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L(CopyFrom1To16BytesTailCase2):
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sub %rcx, %r8
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add %rcx, %rsi
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bsf %rdx, %rdx
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cmp %r8, %rdx
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@ -504,7 +504,6 @@ L(CopyFrom1To16BytesCase3):
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L(CopyFrom1To32BytesCase2OrCase3):
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test %rdx, %rdx
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jnz L(CopyFrom1To32BytesCase2)
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sub %rcx, %r8
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add %rcx, %rsi
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BRANCH_TO_JMPTBL_ENTRY (L(ExitStrncpyTable), %r8, 4)
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@ -512,7 +511,6 @@ L(CopyFrom1To32BytesCase2OrCase3):
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L(CopyFrom1To16BytesTailCase2OrCase3):
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test %rdx, %rdx
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jnz L(CopyFrom1To16BytesTailCase2)
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sub %rcx, %r8
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add %rcx, %rsi
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BRANCH_TO_JMPTBL_ENTRY (L(ExitStrncpyTable), %r8, 4)
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@ -84,10 +84,10 @@ ENTRY (STRCPY)
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# ifdef USE_AS_STRNCPY
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mov %rcx, %rsi
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sub $16, %r8
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and $0xf, %rsi
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/* add 16 bytes rcx_shift to r8 */
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add %rsi, %r8
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# endif
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lea 16(%rcx), %rsi
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@ -120,7 +120,7 @@ ENTRY (STRCPY)
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/* rax = 0: there isn't end of string from position rsi to rsi+15 */
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# ifdef USE_AS_STRNCPY
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sub $32, %r8
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sub $16, %r8
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jbe L(CopyFrom1To16BytesCase2OrCase3)
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# endif
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test %rax, %rax
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