mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-02 17:50:20 +00:00
5a82c74822
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
725 lines
11 KiB
ArmAsm
725 lines
11 KiB
ArmAsm
/* Optimized memrchr with sse2 without bsf
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Copyright (C) 2011-2019 Free Software Foundation, Inc.
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Contributed by Intel Corporation.
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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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#if IS_IN (libc)
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# include <sysdep.h>
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# define CFI_PUSH(REG) \
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cfi_adjust_cfa_offset (4); \
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cfi_rel_offset (REG, 0)
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# define CFI_POP(REG) \
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cfi_adjust_cfa_offset (-4); \
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cfi_restore (REG)
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# define PUSH(REG) pushl REG; CFI_PUSH (REG)
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# define POP(REG) popl REG; CFI_POP (REG)
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# define PARMS 4
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# define STR1 PARMS
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# define STR2 STR1+4
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# define LEN STR2+4
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atom_text_section
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ENTRY (__memrchr_sse2)
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mov STR1(%esp), %ecx
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movd STR2(%esp), %xmm1
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mov LEN(%esp), %edx
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sub $16, %edx
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jbe L(length_less16)
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punpcklbw %xmm1, %xmm1
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add %edx, %ecx
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punpcklbw %xmm1, %xmm1
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movdqu (%ecx), %xmm0
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pshufd $0, %xmm1, %xmm1
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pcmpeqb %xmm1, %xmm0
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pmovmskb %xmm0, %eax
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test %eax, %eax
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jnz L(exit_dispatch)
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sub $64, %ecx
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mov %ecx, %eax
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and $15, %eax
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jz L(loop_prolog)
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lea 16(%ecx), %ecx
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lea 16(%edx), %edx
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sub %eax, %edx
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and $-16, %ecx
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.p2align 4
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/* Loop start on aligned string. */
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L(loop_prolog):
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sub $64, %edx
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jbe L(exit_loop)
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movdqa 48(%ecx), %xmm0
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pcmpeqb %xmm1, %xmm0
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pmovmskb %xmm0, %eax
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test %eax, %eax
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jnz L(matches48)
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movdqa 32(%ecx), %xmm2
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pcmpeqb %xmm1, %xmm2
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pmovmskb %xmm2, %eax
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test %eax, %eax
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jnz L(matches32)
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movdqa 16(%ecx), %xmm3
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pcmpeqb %xmm1, %xmm3
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pmovmskb %xmm3, %eax
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test %eax, %eax
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jnz L(matches16)
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movdqa (%ecx), %xmm4
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pcmpeqb %xmm1, %xmm4
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pmovmskb %xmm4, %eax
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test %eax, %eax
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jnz L(exit_dispatch)
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sub $64, %ecx
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sub $64, %edx
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jbe L(exit_loop)
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movdqa 48(%ecx), %xmm0
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pcmpeqb %xmm1, %xmm0
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pmovmskb %xmm0, %eax
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test %eax, %eax
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jnz L(matches48)
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movdqa 32(%ecx), %xmm2
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pcmpeqb %xmm1, %xmm2
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pmovmskb %xmm2, %eax
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test %eax, %eax
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jnz L(matches32)
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movdqa 16(%ecx), %xmm3
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pcmpeqb %xmm1, %xmm3
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pmovmskb %xmm3, %eax
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test %eax, %eax
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jnz L(matches16)
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movdqa (%ecx), %xmm3
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pcmpeqb %xmm1, %xmm3
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pmovmskb %xmm3, %eax
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test %eax, %eax
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jnz L(exit_dispatch)
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mov %ecx, %eax
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and $63, %eax
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test %eax, %eax
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jz L(align64_loop)
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lea 64(%ecx), %ecx
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lea 64(%edx), %edx
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and $-64, %ecx
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sub %eax, %edx
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.p2align 4
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L(align64_loop):
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sub $64, %ecx
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sub $64, %edx
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jbe L(exit_loop)
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movdqa (%ecx), %xmm0
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movdqa 16(%ecx), %xmm2
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movdqa 32(%ecx), %xmm3
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movdqa 48(%ecx), %xmm4
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pcmpeqb %xmm1, %xmm0
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pcmpeqb %xmm1, %xmm2
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pcmpeqb %xmm1, %xmm3
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pcmpeqb %xmm1, %xmm4
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pmaxub %xmm3, %xmm0
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pmaxub %xmm4, %xmm2
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pmaxub %xmm0, %xmm2
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pmovmskb %xmm2, %eax
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test %eax, %eax
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jz L(align64_loop)
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pmovmskb %xmm4, %eax
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test %eax, %eax
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jnz L(matches48)
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pmovmskb %xmm3, %eax
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test %eax, %eax
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jnz L(matches32)
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movdqa 16(%ecx), %xmm2
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pcmpeqb %xmm1, %xmm2
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pcmpeqb (%ecx), %xmm1
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pmovmskb %xmm2, %eax
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test %eax, %eax
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jnz L(matches16)
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pmovmskb %xmm1, %eax
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test %ah, %ah
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jnz L(exit_dispatch_high)
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mov %al, %dl
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and $15 << 4, %dl
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jnz L(exit_dispatch_8)
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test $0x08, %al
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jnz L(exit_4)
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test $0x04, %al
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jnz L(exit_3)
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test $0x02, %al
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jnz L(exit_2)
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mov %ecx, %eax
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ret
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.p2align 4
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L(exit_loop):
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add $64, %edx
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cmp $32, %edx
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jbe L(exit_loop_32)
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movdqa 48(%ecx), %xmm0
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pcmpeqb %xmm1, %xmm0
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pmovmskb %xmm0, %eax
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test %eax, %eax
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jnz L(matches48)
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movdqa 32(%ecx), %xmm2
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pcmpeqb %xmm1, %xmm2
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pmovmskb %xmm2, %eax
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test %eax, %eax
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jnz L(matches32)
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movdqa 16(%ecx), %xmm3
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pcmpeqb %xmm1, %xmm3
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pmovmskb %xmm3, %eax
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test %eax, %eax
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jnz L(matches16_1)
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cmp $48, %edx
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jbe L(return_null)
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pcmpeqb (%ecx), %xmm1
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pmovmskb %xmm1, %eax
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test %eax, %eax
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jnz L(matches0_1)
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xor %eax, %eax
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ret
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.p2align 4
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L(exit_loop_32):
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movdqa 48(%ecx), %xmm0
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pcmpeqb %xmm1, %xmm0
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pmovmskb %xmm0, %eax
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test %eax, %eax
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jnz L(matches48_1)
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cmp $16, %edx
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jbe L(return_null)
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pcmpeqb 32(%ecx), %xmm1
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pmovmskb %xmm1, %eax
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test %eax, %eax
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jnz L(matches32_1)
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xor %eax, %eax
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ret
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.p2align 4
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L(matches16):
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lea 16(%ecx), %ecx
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test %ah, %ah
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jnz L(exit_dispatch_high)
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mov %al, %dl
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and $15 << 4, %dl
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jnz L(exit_dispatch_8)
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test $0x08, %al
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jnz L(exit_4)
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test $0x04, %al
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jnz L(exit_3)
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test $0x02, %al
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jnz L(exit_2)
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mov %ecx, %eax
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ret
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.p2align 4
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L(matches32):
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lea 32(%ecx), %ecx
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test %ah, %ah
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jnz L(exit_dispatch_high)
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mov %al, %dl
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and $15 << 4, %dl
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jnz L(exit_dispatch_8)
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test $0x08, %al
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jnz L(exit_4)
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test $0x04, %al
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jnz L(exit_3)
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test $0x02, %al
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jnz L(exit_2)
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mov %ecx, %eax
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ret
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.p2align 4
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L(matches48):
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lea 48(%ecx), %ecx
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.p2align 4
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L(exit_dispatch):
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test %ah, %ah
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jnz L(exit_dispatch_high)
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mov %al, %dl
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and $15 << 4, %dl
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jnz L(exit_dispatch_8)
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test $0x08, %al
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jnz L(exit_4)
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test $0x04, %al
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jnz L(exit_3)
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test $0x02, %al
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jnz L(exit_2)
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mov %ecx, %eax
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ret
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.p2align 4
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L(exit_dispatch_8):
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test $0x80, %al
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jnz L(exit_8)
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test $0x40, %al
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|
jnz L(exit_7)
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test $0x20, %al
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jnz L(exit_6)
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lea 4(%ecx), %eax
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ret
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|
|
.p2align 4
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L(exit_dispatch_high):
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mov %ah, %dh
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and $15 << 4, %dh
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jnz L(exit_dispatch_high_8)
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test $0x08, %ah
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jnz L(exit_12)
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test $0x04, %ah
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|
jnz L(exit_11)
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test $0x02, %ah
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jnz L(exit_10)
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lea 8(%ecx), %eax
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ret
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|
.p2align 4
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L(exit_dispatch_high_8):
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test $0x80, %ah
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jnz L(exit_16)
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|
test $0x40, %ah
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|
jnz L(exit_15)
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test $0x20, %ah
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jnz L(exit_14)
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lea 12(%ecx), %eax
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ret
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|
|
|
.p2align 4
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|
L(exit_2):
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|
lea 1(%ecx), %eax
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|
ret
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|
|
|
.p2align 4
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|
L(exit_3):
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|
lea 2(%ecx), %eax
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|
ret
|
|
|
|
.p2align 4
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|
L(exit_4):
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|
lea 3(%ecx), %eax
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|
ret
|
|
|
|
.p2align 4
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|
L(exit_6):
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|
lea 5(%ecx), %eax
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|
ret
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|
|
|
.p2align 4
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|
L(exit_7):
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|
lea 6(%ecx), %eax
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|
ret
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|
|
|
.p2align 4
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|
L(exit_8):
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|
lea 7(%ecx), %eax
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|
ret
|
|
|
|
.p2align 4
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|
L(exit_10):
|
|
lea 9(%ecx), %eax
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|
ret
|
|
|
|
.p2align 4
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|
L(exit_11):
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|
lea 10(%ecx), %eax
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|
ret
|
|
|
|
.p2align 4
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|
L(exit_12):
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|
lea 11(%ecx), %eax
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|
ret
|
|
|
|
.p2align 4
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|
L(exit_14):
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|
lea 13(%ecx), %eax
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|
ret
|
|
|
|
.p2align 4
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|
L(exit_15):
|
|
lea 14(%ecx), %eax
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|
ret
|
|
|
|
.p2align 4
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|
L(exit_16):
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|
lea 15(%ecx), %eax
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|
ret
|
|
|
|
.p2align 4
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|
L(matches0_1):
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|
lea -64(%edx), %edx
|
|
|
|
test %ah, %ah
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|
jnz L(exit_dispatch_1_high)
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|
mov %al, %ah
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|
and $15 << 4, %ah
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|
jnz L(exit_dispatch_1_8)
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|
test $0x08, %al
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|
jnz L(exit_1_4)
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|
test $0x04, %al
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|
jnz L(exit_1_3)
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|
test $0x02, %al
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|
jnz L(exit_1_2)
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|
add $0, %edx
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jl L(return_null)
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mov %ecx, %eax
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ret
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|
|
|
.p2align 4
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|
L(matches16_1):
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|
lea -48(%edx), %edx
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lea 16(%ecx), %ecx
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|
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|
test %ah, %ah
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jnz L(exit_dispatch_1_high)
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|
mov %al, %ah
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|
and $15 << 4, %ah
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|
jnz L(exit_dispatch_1_8)
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|
test $0x08, %al
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|
jnz L(exit_1_4)
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|
test $0x04, %al
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|
jnz L(exit_1_3)
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|
test $0x02, %al
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|
jnz L(exit_1_2)
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|
add $0, %edx
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|
jl L(return_null)
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|
mov %ecx, %eax
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|
ret
|
|
|
|
.p2align 4
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|
L(matches32_1):
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|
lea -32(%edx), %edx
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|
lea 32(%ecx), %ecx
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|
|
|
test %ah, %ah
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|
jnz L(exit_dispatch_1_high)
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|
mov %al, %ah
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|
and $15 << 4, %ah
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|
jnz L(exit_dispatch_1_8)
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|
test $0x08, %al
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|
jnz L(exit_1_4)
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|
test $0x04, %al
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|
jnz L(exit_1_3)
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|
test $0x02, %al
|
|
jnz L(exit_1_2)
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|
add $0, %edx
|
|
jl L(return_null)
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|
mov %ecx, %eax
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|
ret
|
|
|
|
.p2align 4
|
|
L(matches48_1):
|
|
lea -16(%edx), %edx
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|
lea 48(%ecx), %ecx
|
|
|
|
.p2align 4
|
|
L(exit_dispatch_1):
|
|
test %ah, %ah
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|
jnz L(exit_dispatch_1_high)
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|
mov %al, %ah
|
|
and $15 << 4, %ah
|
|
jnz L(exit_dispatch_1_8)
|
|
test $0x08, %al
|
|
jnz L(exit_1_4)
|
|
test $0x04, %al
|
|
jnz L(exit_1_3)
|
|
test $0x02, %al
|
|
jnz L(exit_1_2)
|
|
add $0, %edx
|
|
jl L(return_null)
|
|
mov %ecx, %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_dispatch_1_8):
|
|
test $0x80, %al
|
|
jnz L(exit_1_8)
|
|
test $0x40, %al
|
|
jnz L(exit_1_7)
|
|
test $0x20, %al
|
|
jnz L(exit_1_6)
|
|
add $4, %edx
|
|
jl L(return_null)
|
|
lea 4(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_dispatch_1_high):
|
|
mov %ah, %al
|
|
and $15 << 4, %al
|
|
jnz L(exit_dispatch_1_high_8)
|
|
test $0x08, %ah
|
|
jnz L(exit_1_12)
|
|
test $0x04, %ah
|
|
jnz L(exit_1_11)
|
|
test $0x02, %ah
|
|
jnz L(exit_1_10)
|
|
add $8, %edx
|
|
jl L(return_null)
|
|
lea 8(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_dispatch_1_high_8):
|
|
test $0x80, %ah
|
|
jnz L(exit_1_16)
|
|
test $0x40, %ah
|
|
jnz L(exit_1_15)
|
|
test $0x20, %ah
|
|
jnz L(exit_1_14)
|
|
add $12, %edx
|
|
jl L(return_null)
|
|
lea 12(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_1_2):
|
|
add $1, %edx
|
|
jl L(return_null)
|
|
lea 1(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_1_3):
|
|
add $2, %edx
|
|
jl L(return_null)
|
|
lea 2(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_1_4):
|
|
add $3, %edx
|
|
jl L(return_null)
|
|
lea 3(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_1_6):
|
|
add $5, %edx
|
|
jl L(return_null)
|
|
lea 5(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_1_7):
|
|
add $6, %edx
|
|
jl L(return_null)
|
|
lea 6(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_1_8):
|
|
add $7, %edx
|
|
jl L(return_null)
|
|
lea 7(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_1_10):
|
|
add $9, %edx
|
|
jl L(return_null)
|
|
lea 9(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_1_11):
|
|
add $10, %edx
|
|
jl L(return_null)
|
|
lea 10(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_1_12):
|
|
add $11, %edx
|
|
jl L(return_null)
|
|
lea 11(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_1_14):
|
|
add $13, %edx
|
|
jl L(return_null)
|
|
lea 13(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_1_15):
|
|
add $14, %edx
|
|
jl L(return_null)
|
|
lea 14(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(exit_1_16):
|
|
add $15, %edx
|
|
jl L(return_null)
|
|
lea 15(%ecx), %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(return_null):
|
|
xor %eax, %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(length_less16_offset0):
|
|
mov %dl, %cl
|
|
pcmpeqb (%eax), %xmm1
|
|
|
|
mov $1, %edx
|
|
sal %cl, %edx
|
|
sub $1, %edx
|
|
|
|
mov %eax, %ecx
|
|
pmovmskb %xmm1, %eax
|
|
|
|
and %edx, %eax
|
|
test %eax, %eax
|
|
jnz L(exit_dispatch)
|
|
|
|
xor %eax, %eax
|
|
ret
|
|
|
|
.p2align 4
|
|
L(length_less16):
|
|
punpcklbw %xmm1, %xmm1
|
|
add $16, %edx
|
|
je L(return_null)
|
|
punpcklbw %xmm1, %xmm1
|
|
|
|
mov %ecx, %eax
|
|
pshufd $0, %xmm1, %xmm1
|
|
|
|
and $15, %ecx
|
|
jz L(length_less16_offset0)
|
|
|
|
PUSH (%edi)
|
|
|
|
mov %cl, %dh
|
|
add %dl, %dh
|
|
and $-16, %eax
|
|
|
|
sub $16, %dh
|
|
ja L(length_less16_part2)
|
|
|
|
pcmpeqb (%eax), %xmm1
|
|
pmovmskb %xmm1, %edi
|
|
|
|
sar %cl, %edi
|
|
add %ecx, %eax
|
|
mov %dl, %cl
|
|
|
|
mov $1, %edx
|
|
sal %cl, %edx
|
|
sub $1, %edx
|
|
|
|
and %edx, %edi
|
|
test %edi, %edi
|
|
jz L(ret_null)
|
|
|
|
bsr %edi, %edi
|
|
add %edi, %eax
|
|
POP (%edi)
|
|
ret
|
|
|
|
CFI_PUSH (%edi)
|
|
|
|
.p2align 4
|
|
L(length_less16_part2):
|
|
movdqa 16(%eax), %xmm2
|
|
pcmpeqb %xmm1, %xmm2
|
|
pmovmskb %xmm2, %edi
|
|
|
|
mov %cl, %ch
|
|
|
|
mov %dh, %cl
|
|
mov $1, %edx
|
|
sal %cl, %edx
|
|
sub $1, %edx
|
|
|
|
and %edx, %edi
|
|
|
|
test %edi, %edi
|
|
jnz L(length_less16_part2_return)
|
|
|
|
pcmpeqb (%eax), %xmm1
|
|
pmovmskb %xmm1, %edi
|
|
|
|
mov %ch, %cl
|
|
sar %cl, %edi
|
|
test %edi, %edi
|
|
jz L(ret_null)
|
|
|
|
bsr %edi, %edi
|
|
add %edi, %eax
|
|
xor %ch, %ch
|
|
add %ecx, %eax
|
|
POP (%edi)
|
|
ret
|
|
|
|
CFI_PUSH (%edi)
|
|
|
|
.p2align 4
|
|
L(length_less16_part2_return):
|
|
bsr %edi, %edi
|
|
lea 16(%eax, %edi), %eax
|
|
POP (%edi)
|
|
ret
|
|
|
|
CFI_PUSH (%edi)
|
|
|
|
.p2align 4
|
|
L(ret_null):
|
|
xor %eax, %eax
|
|
POP (%edi)
|
|
ret
|
|
|
|
END (__memrchr_sse2)
|
|
#endif
|