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| author | Ulrich Drepper <drepper@gmail.com> | 2011-07-21 12:32:36 -0400 |
|---|---|---|
| committer | Ulrich Drepper <drepper@gmail.com> | 2011-07-21 12:32:36 -0400 |
| commit | 21137f89c574de2cadda332ad874b2e6b624f950 (patch) | |
| tree | ce590a19201cbd8d198c9e1dd594dd8449c0b748 /sysdeps/x86_64/multiarch/strcpy-ssse3.S | |
| parent | a65c0b7a322d0084672bc7fc4b51af8f2a054d57 (diff) | |
| download | glibc-21137f89c574de2cadda332ad874b2e6b624f950.tar.gz glibc-21137f89c574de2cadda332ad874b2e6b624f950.tar.xz glibc-21137f89c574de2cadda332ad874b2e6b624f950.zip | |
Fix overflow bug is optimized strncat for x86-64
Diffstat (limited to 'sysdeps/x86_64/multiarch/strcpy-ssse3.S')
| -rw-r--r-- | sysdeps/x86_64/multiarch/strcpy-ssse3.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sysdeps/x86_64/multiarch/strcpy-ssse3.S b/sysdeps/x86_64/multiarch/strcpy-ssse3.S index 05faf0dfc2..c4ec54cd21 100644 --- a/sysdeps/x86_64/multiarch/strcpy-ssse3.S +++ b/sysdeps/x86_64/multiarch/strcpy-ssse3.S @@ -84,10 +84,10 @@ ENTRY (STRCPY) # ifdef USE_AS_STRNCPY mov %rcx, %rsi + sub $16, %r8 and $0xf, %rsi /* add 16 bytes rcx_shift to r8 */ - add %rsi, %r8 # endif lea 16(%rcx), %rsi @@ -120,7 +120,7 @@ ENTRY (STRCPY) /* rax = 0: there isn't end of string from position rsi to rsi+15 */ # ifdef USE_AS_STRNCPY - sub $32, %r8 + sub $16, %r8 jbe L(CopyFrom1To16BytesCase2OrCase3) # endif test %rax, %rax |