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author | Liubov Dmitrieva <liubov.dmitrieva@gmail.com> | 2011-07-19 17:11:54 -0400 |
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committer | Ulrich Drepper <drepper@gmail.com> | 2011-07-19 17:11:54 -0400 |
commit | 99710781cc47002612e609c7dc5f34692b64e9b3 (patch) | |
tree | ac3c980ce57d0420fff758faffbd59d111026219 /sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S | |
parent | 7dc6bd90c569c49807462b0740b18e32fab4d8b7 (diff) | |
download | glibc-99710781cc47002612e609c7dc5f34692b64e9b3.tar.gz |
Improve 64 bit strcat functions with SSE2/SSSE3
Diffstat (limited to 'sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S')
-rw-r--r-- | sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S b/sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S new file mode 100644 index 0000000000..1150281fe4 --- /dev/null +++ b/sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S @@ -0,0 +1,55 @@ +/* strcat with SSE2 + Copyright (C) 2011 Free Software Foundation, Inc. + Contributed by Intel Corporation. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef NOT_IN_libc + +# include <sysdep.h> + +# ifndef STRCAT +# define STRCAT __strcat_sse2_unaligned +# endif + +# define USE_AS_STRCAT + +.text +ENTRY (STRCAT) + mov %rdi, %r9 +# ifdef USE_AS_STRNCAT + mov %rdx, %r8 +# endif + +# define RETURN jmp L(StartStrcpyPart) +# include "strlen-sse2-pminub.S" +# undef RETURN + +L(StartStrcpyPart): + lea (%r9, %rax), %rdi + mov %rsi, %rcx + mov %r9, %rax /* save result */ + +# ifdef USE_AS_STRNCAT + test %r8, %r8 + jz L(ExitZero) +# define USE_AS_STRNCPY +# endif + +# include "strcpy-sse2-unaligned.S" +#endif + |