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581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
156 lines
2.9 KiB
ArmAsm
156 lines
2.9 KiB
ArmAsm
/* wcschr with SSSE3
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Copyright (C) 2011-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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.text
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ENTRY (__wcschr)
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movd %rsi, %xmm1
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pxor %xmm2, %xmm2
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mov %rdi, %rcx
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punpckldq %xmm1, %xmm1
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punpckldq %xmm1, %xmm1
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and $63, %rcx
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cmp $48, %rcx
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ja L(cross_cache)
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movdqu (%rdi), %xmm0
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pcmpeqd %xmm0, %xmm2
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add $16, %rdi
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pcmpeqd %xmm1, %xmm0
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pmovmskb %xmm2, %rdx
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pmovmskb %xmm0, %rax
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or %rax, %rdx
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jnz L(matches)
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and $-16, %rdi
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movdqa (%rdi), %xmm0
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pcmpeqd %xmm0, %xmm2
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add $16, %rdi
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pcmpeqd %xmm1, %xmm0
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pmovmskb %xmm2, %rdx
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pmovmskb %xmm0, %rax
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or %rax, %rdx
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jnz L(matches)
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jmp L(loop)
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L(cross_cache):
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and $15, %rcx
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and $-16, %rdi
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movdqa (%rdi), %xmm0
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pcmpeqd %xmm0, %xmm2
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pcmpeqd %xmm1, %xmm0
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pmovmskb %xmm2, %rdx
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pmovmskb %xmm0, %rax
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sar %cl, %rdx
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sar %cl, %rax
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test %rax, %rax
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je L(unaligned_no_match)
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bsf %rax, %rax
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test %rdx, %rdx
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je L(unaligned_match)
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bsf %rdx, %rdx
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cmp %rdx, %rax
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ja L(return_null)
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L(unaligned_match):
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add %rdi, %rax
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add %rcx, %rax
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ret
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.p2align 4
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L(unaligned_no_match):
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test %rdx, %rdx
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jne L(return_null)
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pxor %xmm2, %xmm2
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add $16, %rdi
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.p2align 4
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/* Loop start on aligned string. */
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L(loop):
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movdqa (%rdi), %xmm0
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pcmpeqd %xmm0, %xmm2
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add $16, %rdi
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pcmpeqd %xmm1, %xmm0
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pmovmskb %xmm2, %rdx
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pmovmskb %xmm0, %rax
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or %rax, %rdx
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jnz L(matches)
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movdqa (%rdi), %xmm0
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pcmpeqd %xmm0, %xmm2
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add $16, %rdi
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pcmpeqd %xmm1, %xmm0
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pmovmskb %xmm2, %rdx
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pmovmskb %xmm0, %rax
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or %rax, %rdx
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jnz L(matches)
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movdqa (%rdi), %xmm0
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pcmpeqd %xmm0, %xmm2
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add $16, %rdi
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pcmpeqd %xmm1, %xmm0
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pmovmskb %xmm2, %rdx
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pmovmskb %xmm0, %rax
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or %rax, %rdx
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jnz L(matches)
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movdqa (%rdi), %xmm0
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pcmpeqd %xmm0, %xmm2
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add $16, %rdi
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pcmpeqd %xmm1, %xmm0
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pmovmskb %xmm2, %rdx
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pmovmskb %xmm0, %rax
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or %rax, %rdx
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jnz L(matches)
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jmp L(loop)
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.p2align 4
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L(matches):
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pmovmskb %xmm2, %rdx
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test %rax, %rax
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jz L(return_null)
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bsf %rax, %rax
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test %rdx, %rdx
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je L(match)
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bsf %rdx, %rcx
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cmp %rcx, %rax
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ja L(return_null)
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L(match):
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sub $16, %rdi
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add %rdi, %rax
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ret
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.p2align 4
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L(return_null):
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xor %rax, %rax
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ret
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END (__wcschr)
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libc_hidden_def(__wcschr)
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weak_alias (__wcschr, wcschr)
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libc_hidden_weak (wcschr)
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