--- /dev/null
+/* Copyright (C) 2022 Free Software Foundation, Inc.
+ 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, see
+ <https://www.gnu.org/licenses/>. */
+
+#include "../strchr.S"
--- /dev/null
+/* Copyright (C) 2022 Free Software Foundation, Inc.
+ 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, see
+ <https://www.gnu.org/licenses/>. */
+
+#include "../strchrnul.S"
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#if IS_IN (libc)
-# define strchr __strchr_sse2
+#if IS_IN (libc) || defined STRCHR
+# ifndef STRCHR
+# define STRCHR __strchr_sse2
+# endif
-# undef weak_alias
-# define weak_alias(strchr, index)
-# undef libc_hidden_builtin_def
-# define libc_hidden_builtin_def(strchr)
-#endif
+# include <sysdep.h>
+
+ .text
+ENTRY (STRCHR)
+ movd %esi, %xmm1
+ movl %edi, %eax
+ andl $4095, %eax
+ punpcklbw %xmm1, %xmm1
+ cmpl $4032, %eax
+ punpcklwd %xmm1, %xmm1
+ pshufd $0, %xmm1, %xmm1
+ jg L(cross_page)
+ movdqu (%rdi), %xmm0
+ pxor %xmm3, %xmm3
+ movdqa %xmm0, %xmm4
+ pcmpeqb %xmm1, %xmm0
+ pcmpeqb %xmm3, %xmm4
+ por %xmm4, %xmm0
+ pmovmskb %xmm0, %eax
+ test %eax, %eax
+ je L(next_48_bytes)
+ bsf %eax, %eax
+# ifdef AS_STRCHRNUL
+ leaq (%rdi,%rax), %rax
+# else
+ movl $0, %edx
+ leaq (%rdi,%rax), %rax
+ cmpb %sil, (%rax)
+ cmovne %rdx, %rax
+# endif
+ ret
+
+ .p2align 3
+L(next_48_bytes):
+ movdqu 16(%rdi), %xmm0
+ movdqa %xmm0, %xmm4
+ pcmpeqb %xmm1, %xmm0
+ pcmpeqb %xmm3, %xmm4
+ por %xmm4, %xmm0
+ pmovmskb %xmm0, %ecx
+ movdqu 32(%rdi), %xmm0
+ movdqa %xmm0, %xmm4
+ pcmpeqb %xmm1, %xmm0
+ salq $16, %rcx
+ pcmpeqb %xmm3, %xmm4
+ por %xmm4, %xmm0
+ pmovmskb %xmm0, %eax
+ movdqu 48(%rdi), %xmm0
+ pcmpeqb %xmm0, %xmm3
+ salq $32, %rax
+ pcmpeqb %xmm1, %xmm0
+ orq %rcx, %rax
+ por %xmm3, %xmm0
+ pmovmskb %xmm0, %ecx
+ salq $48, %rcx
+ orq %rcx, %rax
+ testq %rax, %rax
+ jne L(return)
+L(loop_start):
+ /* We use this alignment to force loop be aligned to 8 but not
+ 16 bytes. This gives better sheduling on AMD processors. */
+ .p2align 4
+ pxor %xmm6, %xmm6
+ andq $-64, %rdi
+ .p2align 3
+L(loop64):
+ addq $64, %rdi
+ movdqa (%rdi), %xmm5
+ movdqa 16(%rdi), %xmm2
+ movdqa 32(%rdi), %xmm3
+ pxor %xmm1, %xmm5
+ movdqa 48(%rdi), %xmm4
+ pxor %xmm1, %xmm2
+ pxor %xmm1, %xmm3
+ pminub (%rdi), %xmm5
+ pxor %xmm1, %xmm4
+ pminub 16(%rdi), %xmm2
+ pminub 32(%rdi), %xmm3
+ pminub %xmm2, %xmm5
+ pminub 48(%rdi), %xmm4
+ pminub %xmm3, %xmm5
+ pminub %xmm4, %xmm5
+ pcmpeqb %xmm6, %xmm5
+ pmovmskb %xmm5, %eax
+
+ testl %eax, %eax
+ je L(loop64)
-#include "../strchr.S"
+ movdqa (%rdi), %xmm5
+ movdqa %xmm5, %xmm0
+ pcmpeqb %xmm1, %xmm5
+ pcmpeqb %xmm6, %xmm0
+ por %xmm0, %xmm5
+ pcmpeqb %xmm6, %xmm2
+ pcmpeqb %xmm6, %xmm3
+ pcmpeqb %xmm6, %xmm4
+
+ pmovmskb %xmm5, %ecx
+ pmovmskb %xmm2, %eax
+ salq $16, %rax
+ pmovmskb %xmm3, %r8d
+ pmovmskb %xmm4, %edx
+ salq $32, %r8
+ orq %r8, %rax
+ orq %rcx, %rax
+ salq $48, %rdx
+ orq %rdx, %rax
+ .p2align 3
+L(return):
+ bsfq %rax, %rax
+# ifdef AS_STRCHRNUL
+ leaq (%rdi,%rax), %rax
+# else
+ movl $0, %edx
+ leaq (%rdi,%rax), %rax
+ cmpb %sil, (%rax)
+ cmovne %rdx, %rax
+# endif
+ ret
+ .p2align 4
+
+L(cross_page):
+ movq %rdi, %rdx
+ pxor %xmm2, %xmm2
+ andq $-64, %rdx
+ movdqa %xmm1, %xmm0
+ movdqa (%rdx), %xmm3
+ movdqa %xmm3, %xmm4
+ pcmpeqb %xmm1, %xmm3
+ pcmpeqb %xmm2, %xmm4
+ por %xmm4, %xmm3
+ pmovmskb %xmm3, %r8d
+ movdqa 16(%rdx), %xmm3
+ movdqa %xmm3, %xmm4
+ pcmpeqb %xmm1, %xmm3
+ pcmpeqb %xmm2, %xmm4
+ por %xmm4, %xmm3
+ pmovmskb %xmm3, %eax
+ movdqa 32(%rdx), %xmm3
+ movdqa %xmm3, %xmm4
+ pcmpeqb %xmm1, %xmm3
+ salq $16, %rax
+ pcmpeqb %xmm2, %xmm4
+ por %xmm4, %xmm3
+ pmovmskb %xmm3, %r9d
+ movdqa 48(%rdx), %xmm3
+ pcmpeqb %xmm3, %xmm2
+ salq $32, %r9
+ pcmpeqb %xmm3, %xmm0
+ orq %r9, %rax
+ orq %r8, %rax
+ por %xmm2, %xmm0
+ pmovmskb %xmm0, %ecx
+ salq $48, %rcx
+ orq %rcx, %rax
+ movl %edi, %ecx
+ subb %dl, %cl
+ shrq %cl, %rax
+ testq %rax, %rax
+ jne L(return)
+ jmp L(loop_start)
+
+END (STRCHR)
+#endif
<https://www.gnu.org/licenses/>. */
#if IS_IN (libc)
-# define __strchrnul __strchrnul_sse2
-
-# undef weak_alias
-# define weak_alias(__strchrnul, strchrnul)
+# ifndef STRCHR
+# define STRCHR __strchrnul_sse2
+# endif
#endif
-#include "../strchrnul.S"
+#define AS_STRCHRNUL
+
+#include "strchr-sse2.S"
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#include <sysdep.h>
- .text
-ENTRY (strchr)
- movd %esi, %xmm1
- movl %edi, %eax
- andl $4095, %eax
- punpcklbw %xmm1, %xmm1
- cmpl $4032, %eax
- punpcklwd %xmm1, %xmm1
- pshufd $0, %xmm1, %xmm1
- jg L(cross_page)
- movdqu (%rdi), %xmm0
- pxor %xmm3, %xmm3
- movdqa %xmm0, %xmm4
- pcmpeqb %xmm1, %xmm0
- pcmpeqb %xmm3, %xmm4
- por %xmm4, %xmm0
- pmovmskb %xmm0, %eax
- test %eax, %eax
- je L(next_48_bytes)
- bsf %eax, %eax
-#ifdef AS_STRCHRNUL
- leaq (%rdi,%rax), %rax
-#else
- movl $0, %edx
- leaq (%rdi,%rax), %rax
- cmpb %sil, (%rax)
- cmovne %rdx, %rax
-#endif
- ret
-
- .p2align 3
- L(next_48_bytes):
- movdqu 16(%rdi), %xmm0
- movdqa %xmm0, %xmm4
- pcmpeqb %xmm1, %xmm0
- pcmpeqb %xmm3, %xmm4
- por %xmm4, %xmm0
- pmovmskb %xmm0, %ecx
- movdqu 32(%rdi), %xmm0
- movdqa %xmm0, %xmm4
- pcmpeqb %xmm1, %xmm0
- salq $16, %rcx
- pcmpeqb %xmm3, %xmm4
- por %xmm4, %xmm0
- pmovmskb %xmm0, %eax
- movdqu 48(%rdi), %xmm0
- pcmpeqb %xmm0, %xmm3
- salq $32, %rax
- pcmpeqb %xmm1, %xmm0
- orq %rcx, %rax
- por %xmm3, %xmm0
- pmovmskb %xmm0, %ecx
- salq $48, %rcx
- orq %rcx, %rax
- testq %rax, %rax
- jne L(return)
-L(loop_start):
- /* We use this alignment to force loop be aligned to 8 but not
- 16 bytes. This gives better sheduling on AMD processors. */
- .p2align 4
- pxor %xmm6, %xmm6
- andq $-64, %rdi
- .p2align 3
-L(loop64):
- addq $64, %rdi
- movdqa (%rdi), %xmm5
- movdqa 16(%rdi), %xmm2
- movdqa 32(%rdi), %xmm3
- pxor %xmm1, %xmm5
- movdqa 48(%rdi), %xmm4
- pxor %xmm1, %xmm2
- pxor %xmm1, %xmm3
- pminub (%rdi), %xmm5
- pxor %xmm1, %xmm4
- pminub 16(%rdi), %xmm2
- pminub 32(%rdi), %xmm3
- pminub %xmm2, %xmm5
- pminub 48(%rdi), %xmm4
- pminub %xmm3, %xmm5
- pminub %xmm4, %xmm5
- pcmpeqb %xmm6, %xmm5
- pmovmskb %xmm5, %eax
-
- testl %eax, %eax
- je L(loop64)
-
- movdqa (%rdi), %xmm5
- movdqa %xmm5, %xmm0
- pcmpeqb %xmm1, %xmm5
- pcmpeqb %xmm6, %xmm0
- por %xmm0, %xmm5
- pcmpeqb %xmm6, %xmm2
- pcmpeqb %xmm6, %xmm3
- pcmpeqb %xmm6, %xmm4
-
- pmovmskb %xmm5, %ecx
- pmovmskb %xmm2, %eax
- salq $16, %rax
- pmovmskb %xmm3, %r8d
- pmovmskb %xmm4, %edx
- salq $32, %r8
- orq %r8, %rax
- orq %rcx, %rax
- salq $48, %rdx
- orq %rdx, %rax
- .p2align 3
-L(return):
- bsfq %rax, %rax
-#ifdef AS_STRCHRNUL
- leaq (%rdi,%rax), %rax
-#else
- movl $0, %edx
- leaq (%rdi,%rax), %rax
- cmpb %sil, (%rax)
- cmovne %rdx, %rax
-#endif
- ret
- .p2align 4
-
-L(cross_page):
- movq %rdi, %rdx
- pxor %xmm2, %xmm2
- andq $-64, %rdx
- movdqa %xmm1, %xmm0
- movdqa (%rdx), %xmm3
- movdqa %xmm3, %xmm4
- pcmpeqb %xmm1, %xmm3
- pcmpeqb %xmm2, %xmm4
- por %xmm4, %xmm3
- pmovmskb %xmm3, %r8d
- movdqa 16(%rdx), %xmm3
- movdqa %xmm3, %xmm4
- pcmpeqb %xmm1, %xmm3
- pcmpeqb %xmm2, %xmm4
- por %xmm4, %xmm3
- pmovmskb %xmm3, %eax
- movdqa 32(%rdx), %xmm3
- movdqa %xmm3, %xmm4
- pcmpeqb %xmm1, %xmm3
- salq $16, %rax
- pcmpeqb %xmm2, %xmm4
- por %xmm4, %xmm3
- pmovmskb %xmm3, %r9d
- movdqa 48(%rdx), %xmm3
- pcmpeqb %xmm3, %xmm2
- salq $32, %r9
- pcmpeqb %xmm3, %xmm0
- orq %r9, %rax
- orq %r8, %rax
- por %xmm2, %xmm0
- pmovmskb %xmm0, %ecx
- salq $48, %rcx
- orq %rcx, %rax
- movl %edi, %ecx
- subb %dl, %cl
- shrq %cl, %rax
- testq %rax, %rax
- jne L(return)
- jmp L(loop_start)
-
-END (strchr)
-
-#ifndef AS_STRCHRNUL
+#define STRCHR strchr
+#include "multiarch/strchr-sse2.S"
weak_alias (strchr, index)
libc_hidden_builtin_def (strchr)
-#endif
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#include <sysdep.h>
-
-#define strchr __strchrnul
-#define AS_STRCHRNUL
-#include "strchr.S"
+#define STRCHR __strchrnul
+#include "multiarch/strchrnul-sse2.S"
weak_alias (__strchrnul, strchrnul)
projects / thirdparty / glibc.git / commitdiff
