diff options
Diffstat (limited to 'sysdeps/x86_64/multiarch/strlen-sse2-pminub.S')
| -rw-r--r-- | sysdeps/x86_64/multiarch/strlen-sse2-pminub.S | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/sysdeps/x86_64/multiarch/strlen-sse2-pminub.S b/sysdeps/x86_64/multiarch/strlen-sse2-pminub.S new file mode 100644 index 0000000000..57778cf2d1 --- /dev/null +++ b/sysdeps/x86_64/multiarch/strlen-sse2-pminub.S @@ -0,0 +1,260 @@ +/* strlen 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. */ + +#if !defined NOT_IN_libc && (defined SHARED || defined USE_AS_STRCAT) + +# ifndef USE_AS_STRCAT + +# include <sysdep.h> + +# define RETURN ret + + .section .text.sse2,"ax",@progbits +ENTRY (__strlen_sse2_pminub) + +# endif + xor %rax, %rax + mov %edi, %ecx + and $0x3f, %ecx + pxor %xmm0, %xmm0 + cmp $0x30, %ecx + ja L(next) + movdqu (%rdi), %xmm1 + pcmpeqb %xmm1, %xmm0 + pmovmskb %xmm0, %edx + test %edx, %edx + jnz L(exit_less16) + mov %rdi, %rax + and $-16, %rax + jmp L(align16_start) +L(next): + mov %rdi, %rax + and $-16, %rax + pcmpeqb (%rax), %xmm0 + mov $-1, %r10d + sub %rax, %rcx + shl %cl, %r10d + pmovmskb %xmm0, %edx + and %r10d, %edx + jnz L(exit) +L(align16_start): + pxor %xmm0, %xmm0 + pxor %xmm1, %xmm1 + pxor %xmm2, %xmm2 + pxor %xmm3, %xmm3 + pcmpeqb 16(%rax), %xmm0 + pmovmskb %xmm0, %edx + test %edx, %edx + jnz L(exit16) + + pcmpeqb 32(%rax), %xmm1 + pmovmskb %xmm1, %edx + test %edx, %edx + jnz L(exit32) + + pcmpeqb 48(%rax), %xmm2 + pmovmskb %xmm2, %edx + test %edx, %edx + jnz L(exit48) + + pcmpeqb 64(%rax), %xmm3 + pmovmskb %xmm3, %edx + test %edx, %edx + jnz L(exit64) + + pcmpeqb 80(%rax), %xmm0 + add $64, %rax + pmovmskb %xmm0, %edx + test %edx, %edx + jnz L(exit16) + + pcmpeqb 32(%rax), %xmm1 + pmovmskb %xmm1, %edx + test %edx, %edx + jnz L(exit32) + + pcmpeqb 48(%rax), %xmm2 + pmovmskb %xmm2, %edx + test %edx, %edx + jnz L(exit48) + + pcmpeqb 64(%rax), %xmm3 + pmovmskb %xmm3, %edx + test %edx, %edx + jnz L(exit64) + + pcmpeqb 80(%rax), %xmm0 + add $64, %rax + pmovmskb %xmm0, %edx + test %edx, %edx + jnz L(exit16) + + pcmpeqb 32(%rax), %xmm1 + pmovmskb %xmm1, %edx + test %edx, %edx + jnz L(exit32) + + pcmpeqb 48(%rax), %xmm2 + pmovmskb %xmm2, %edx + test %edx, %edx + jnz L(exit48) + + pcmpeqb 64(%rax), %xmm3 + pmovmskb %xmm3, %edx + test %edx, %edx + jnz L(exit64) + + pcmpeqb 80(%rax), %xmm0 + add $64, %rax + pmovmskb %xmm0, %edx + test %edx, %edx + jnz L(exit16) + + pcmpeqb 32(%rax), %xmm1 + pmovmskb %xmm1, %edx + test %edx, %edx + jnz L(exit32) + + pcmpeqb 48(%rax), %xmm2 + pmovmskb %xmm2, %edx + test %edx, %edx + jnz L(exit48) + + pcmpeqb 64(%rax), %xmm3 + pmovmskb %xmm3, %edx + test %edx, %edx + jnz L(exit64) + + + test $0x3f, %rax + jz L(align64_loop) + + pcmpeqb 80(%rax), %xmm0 + add $80, %rax + pmovmskb %xmm0, %edx + test %edx, %edx + jnz L(exit) + + test $0x3f, %rax + jz L(align64_loop) + + pcmpeqb 16(%rax), %xmm1 + add $16, %rax + pmovmskb %xmm1, %edx + test %edx, %edx + jnz L(exit) + + test $0x3f, %rax + jz L(align64_loop) + + pcmpeqb 16(%rax), %xmm2 + add $16, %rax + pmovmskb %xmm2, %edx + test %edx, %edx + jnz L(exit) + + test $0x3f, %rax + jz L(align64_loop) + + pcmpeqb 16(%rax), %xmm3 + add $16, %rax + pmovmskb %xmm3, %edx + test %edx, %edx + jnz L(exit) + + add $16, %rax + .p2align 4 + L(align64_loop): + movaps (%rax), %xmm4 + pminub 16(%rax), %xmm4 + movaps 32(%rax), %xmm5 + pminub 48(%rax), %xmm5 + add $64, %rax + pminub %xmm4, %xmm5 + pcmpeqb %xmm0, %xmm5 + pmovmskb %xmm5, %edx + test %edx, %edx + jz L(align64_loop) + + + pcmpeqb -64(%rax), %xmm0 + sub $80, %rax + pmovmskb %xmm0, %edx + test %edx, %edx + jnz L(exit16) + + pcmpeqb 32(%rax), %xmm1 + pmovmskb %xmm1, %edx + test %edx, %edx + jnz L(exit32) + + pcmpeqb 48(%rax), %xmm2 + pmovmskb %xmm2, %edx + test %edx, %edx + jnz L(exit48) + + pcmpeqb 64(%rax), %xmm3 + pmovmskb %xmm3, %edx + sub %rdi, %rax + bsf %rdx, %rdx + add %rdx, %rax + add $64, %rax + RETURN + + .p2align 4 +L(exit): + sub %rdi, %rax +L(exit_less16): + bsf %rdx, %rdx + add %rdx, %rax + RETURN + .p2align 4 +L(exit16): + sub %rdi, %rax + bsf %rdx, %rdx + add %rdx, %rax + add $16, %rax + RETURN + .p2align 4 +L(exit32): + sub %rdi, %rax + bsf %rdx, %rdx + add %rdx, %rax + add $32, %rax + RETURN + .p2align 4 +L(exit48): + sub %rdi, %rax + bsf %rdx, %rdx + add %rdx, %rax + add $48, %rax + RETURN + .p2align 4 +L(exit64): + sub %rdi, %rax + bsf %rdx, %rdx + add %rdx, %rax + add $64, %rax +# ifndef USE_AS_STRCAT + RETURN + +END (__strlen_sse2_pminub) +# endif +#endif |