mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 19:53:32 +08:00
i386: Remove bcopy optimizations
The symbols is not present in current POSIX specification and compiler already generates memmove call.
This commit is contained in:
Adhemerval Zanella
parent
86a82cd57c
commit
8bad328203
@ -1,4 +0,0 @@
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#define USE_AS_MEMMOVE
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#define USE_AS_BCOPY
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#define MEMCPY bcopy
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#include "memcpy.S"
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@ -1,3 +0,0 @@
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#define USE_AS_BCOPY
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#define memmove bcopy
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#include <sysdeps/i386/i686/memmove.S>
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@ -25,22 +25,16 @@
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.text
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#ifdef USE_AS_BCOPY
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# define SRC RTN
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# define DEST SRC+4
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# define LEN DEST+4
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#else
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# define DEST RTN
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# define SRC DEST+4
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# define LEN SRC+4
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#define DEST RTN
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#define SRC DEST+4
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#define LEN SRC+4
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# if defined PIC && IS_IN (libc)
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#if defined PIC && IS_IN (libc)
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ENTRY_CHK (__memmove_chk)
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movl 12(%esp), %eax
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cmpl %eax, 16(%esp)
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jb HIDDEN_JUMPTARGET (__chk_fail)
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END_CHK (__memmove_chk)
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# endif
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#endif
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ENTRY (memmove)
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@ -71,9 +65,7 @@ ENTRY (memmove)
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movsl
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movl %edx, %esi
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cfi_restore (esi)
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#ifndef USE_AS_BCOPY
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movl DEST(%esp), %eax
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#endif
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popl %edi
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cfi_adjust_cfa_offset (-4)
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@ -103,9 +95,7 @@ ENTRY (memmove)
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movsl
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movl %edx, %esi
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cfi_restore (esi)
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#ifndef USE_AS_BCOPY
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movl DEST(%esp), %eax
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#endif
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cld
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popl %edi
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@ -114,6 +104,4 @@ ENTRY (memmove)
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ret
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END (memmove)
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#ifndef USE_AS_BCOPY
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libc_hidden_builtin_def (memmove)
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#endif
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@ -2,7 +2,7 @@ ifeq ($(subdir),string)
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gen-as-const-headers += locale-defines.sym
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sysdep_routines += bzero-sse2 memset-sse2 memcpy-ssse3 mempcpy-ssse3 \
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memmove-ssse3 memcpy-ssse3-rep mempcpy-ssse3-rep \
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memmove-ssse3-rep bcopy-ssse3 bcopy-ssse3-rep \
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memmove-ssse3-rep \
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memset-sse2-rep bzero-sse2-rep strcmp-ssse3 \
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strcmp-sse4 strncmp-c strncmp-ssse3 strncmp-sse4 \
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memcmp-ssse3 memcmp-sse4 varshift \
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@ -18,10 +18,10 @@ sysdep_routines += bzero-sse2 memset-sse2 memcpy-ssse3 mempcpy-ssse3 \
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strcasecmp_l-c strcasecmp-c strcasecmp_l-ssse3 \
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strncase_l-c strncase-c strncase_l-ssse3 \
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strcasecmp_l-sse4 strncase_l-sse4 \
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bcopy-sse2-unaligned memcpy-sse2-unaligned \
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memcpy-sse2-unaligned \
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mempcpy-sse2-unaligned memmove-sse2-unaligned \
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strcspn-c strpbrk-c strspn-c \
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bcopy-ia32 bzero-ia32 rawmemchr-ia32 \
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bzero-ia32 rawmemchr-ia32 \
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memchr-ia32 memcmp-ia32 memcpy-ia32 memmove-ia32 \
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mempcpy-ia32 memset-ia32 strcat-ia32 strchr-ia32 \
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strrchr-ia32 strcpy-ia32 strcmp-ia32 strcspn-ia32 \
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@ -1,20 +0,0 @@
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/* bcopy optimized for i686.
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Copyright (C) 2017-2022 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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#define bcopy __bcopy_ia32
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#include <sysdeps/i386/i686/bcopy.S>
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@ -1,4 +0,0 @@
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#define USE_AS_MEMMOVE
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#define USE_AS_BCOPY
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#define MEMCPY __bcopy_sse2_unaligned
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#include "memcpy-sse2-unaligned.S"
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@ -1,4 +0,0 @@
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#define USE_AS_MEMMOVE
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#define USE_AS_BCOPY
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#define MEMCPY __bcopy_ssse3_rep
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#include "memcpy-ssse3-rep.S"
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@ -1,4 +0,0 @@
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#define USE_AS_MEMMOVE
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#define USE_AS_BCOPY
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#define MEMCPY __bcopy_ssse3
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#include "memcpy-ssse3.S"
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@ -1,30 +0,0 @@
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/* Multiple versions of bcopy.
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All versions must be listed in ifunc-impl-list.c.
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Copyright (C) 2017-2022 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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/* Define multiple versions only for the definition in libc. */
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#if IS_IN (libc)
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# define bcopy __redirect_bcopy
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# include <string.h>
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# undef bcopy
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# define SYMBOL_NAME bcopy
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# include "ifunc-memmove.h"
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libc_ifunc_redirected (__redirect_bcopy, bcopy, IFUNC_SELECTOR ());
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#endif
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@ -36,16 +36,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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size_t i = 0;
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/* Support sysdeps/i386/i686/multiarch/bcopy.S. */
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IFUNC_IMPL (i, name, bcopy,
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IFUNC_IMPL_ADD (array, i, bcopy, CPU_FEATURE_USABLE (SSSE3),
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__bcopy_ssse3_rep)
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IFUNC_IMPL_ADD (array, i, bcopy, CPU_FEATURE_USABLE (SSSE3),
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__bcopy_ssse3)
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IFUNC_IMPL_ADD (array, i, bcopy, CPU_FEATURE_USABLE (SSE2),
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__bcopy_sse2_unaligned)
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IFUNC_IMPL_ADD (array, i, bcopy, 1, __bcopy_ia32))
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/* Support sysdeps/i386/i686/multiarch/bzero.S. */
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IFUNC_IMPL (i, name, bzero,
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IFUNC_IMPL_ADD (array, i, bzero, CPU_FEATURE_USABLE (SSE2),
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@ -29,15 +29,9 @@
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# define MEMCPY_CHK __memcpy_chk_sse2_unaligned
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# endif
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# ifdef USE_AS_BCOPY
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# define SRC PARMS
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# define DEST SRC+4
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# define LEN DEST+4
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# else
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# define DEST PARMS
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# define SRC DEST+4
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# define LEN SRC+4
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# endif
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# define DEST PARMS
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# define SRC DEST+4
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# define LEN SRC+4
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# define CFI_PUSH(REG) \
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cfi_adjust_cfa_offset (4); \
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@ -56,7 +50,7 @@
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# define RETURN RETURN_END; CFI_PUSH (%ebx)
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.section .text.sse2,"ax",@progbits
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# if !defined USE_AS_BCOPY && defined SHARED
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# if defined SHARED
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ENTRY (MEMCPY_CHK)
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movl 12(%esp), %eax
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cmpl %eax, 16(%esp)
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@ -671,7 +665,7 @@ L(len_5_8_bytes):
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L(return):
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movl %edx, %eax
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# if !defined USE_AS_BCOPY && defined USE_AS_MEMPCPY
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# ifdef USE_AS_MEMPCPY
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movl LEN(%esp), %ecx
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add %ecx, %eax
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# endif
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@ -30,15 +30,9 @@
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# define MEMCPY_CHK __memcpy_chk_ssse3_rep
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#endif
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#ifdef USE_AS_BCOPY
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# define SRC PARMS
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# define DEST SRC+4
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# define LEN DEST+4
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#else
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# define DEST PARMS
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# define SRC DEST+4
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# define LEN SRC+4
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#endif
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#define DEST PARMS
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#define SRC DEST+4
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#define LEN SRC+4
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#define CFI_PUSH(REG) \
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cfi_adjust_cfa_offset (4); \
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@ -99,7 +93,7 @@
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#endif
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.section .text.ssse3,"ax",@progbits
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#if !defined USE_AS_BCOPY && defined SHARED
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#ifdef SHARED
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ENTRY (MEMCPY_CHK)
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movl 12(%esp), %eax
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cmpl %eax, 16(%esp)
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@ -1097,12 +1091,10 @@ L(fwd_write_4bytes):
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movl -4(%eax), %ecx
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movl %ecx, -4(%edx)
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L(fwd_write_0bytes):
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#ifndef USE_AS_BCOPY
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# ifdef USE_AS_MEMPCPY
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#ifdef USE_AS_MEMPCPY
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movl %edx, %eax
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# else
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#else
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movl DEST(%esp), %eax
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# endif
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#endif
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RETURN
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@ -1112,12 +1104,10 @@ L(fwd_write_5bytes):
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movl -4(%eax), %eax
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movl %ecx, -5(%edx)
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movl %eax, -4(%edx)
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#ifndef USE_AS_BCOPY
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# ifdef USE_AS_MEMPCPY
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#ifdef USE_AS_MEMPCPY
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movl %edx, %eax
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# else
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#else
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movl DEST(%esp), %eax
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# endif
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#endif
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RETURN
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@ -1157,12 +1147,10 @@ L(fwd_write_9bytes):
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L(fwd_write_1bytes):
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movzbl -1(%eax), %ecx
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movb %cl, -1(%edx)
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#ifndef USE_AS_BCOPY
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# ifdef USE_AS_MEMPCPY
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#ifdef USE_AS_MEMPCPY
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movl %edx, %eax
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# else
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#else
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movl DEST(%esp), %eax
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# endif
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#endif
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RETURN
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@ -1203,12 +1191,10 @@ L(fwd_write_6bytes):
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L(fwd_write_2bytes):
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movzwl -2(%eax), %ecx
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movw %cx, -2(%edx)
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#ifndef USE_AS_BCOPY
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# ifdef USE_AS_MEMPCPY
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#ifdef USE_AS_MEMPCPY
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movl %edx, %eax
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# else
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#else
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movl DEST(%esp), %eax
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# endif
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#endif
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RETURN
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@ -1251,12 +1237,10 @@ L(fwd_write_3bytes):
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movzbl -1(%eax), %eax
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movw %cx, -3(%edx)
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movb %al, -1(%edx)
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#ifndef USE_AS_BCOPY
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# ifdef USE_AS_MEMPCPY
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#ifdef USE_AS_MEMPCPY
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movl %edx, %eax
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# else
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#else
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movl DEST(%esp), %eax
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# endif
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#endif
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RETURN_END
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@ -1357,12 +1341,10 @@ L(copy_page_by_rep_left_1):
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L(copy_page_by_rep_exit):
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POP (%esi)
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POP (%edi)
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#ifndef USE_AS_BCOPY
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movl DEST(%esp), %eax
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# ifdef USE_AS_MEMPCPY
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#ifdef USE_AS_MEMPCPY
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movl LEN(%esp), %ecx
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add %ecx, %eax
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# endif
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#endif
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RETURN
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@ -1401,12 +1383,10 @@ L(bk_write_4bytes):
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movl (%eax), %ecx
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movl %ecx, (%edx)
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L(bk_write_0bytes):
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#ifndef USE_AS_BCOPY
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movl DEST(%esp), %eax
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# ifdef USE_AS_MEMPCPY
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#ifdef USE_AS_MEMPCPY
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movl LEN(%esp), %ecx
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add %ecx, %eax
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# endif
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#endif
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RETURN
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@ -1447,12 +1427,10 @@ L(bk_write_5bytes):
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L(bk_write_1bytes):
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movzbl (%eax), %ecx
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movb %cl, (%edx)
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#ifndef USE_AS_BCOPY
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movl DEST(%esp), %eax
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# ifdef USE_AS_MEMPCPY
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#ifdef USE_AS_MEMPCPY
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movl LEN(%esp), %ecx
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add %ecx, %eax
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# endif
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#endif
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RETURN
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@ -1493,12 +1471,10 @@ L(bk_write_6bytes):
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L(bk_write_2bytes):
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movzwl (%eax), %ecx
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movw %cx, (%edx)
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#ifndef USE_AS_BCOPY
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movl DEST(%esp), %eax
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# ifdef USE_AS_MEMPCPY
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#ifdef USE_AS_MEMPCPY
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movl LEN(%esp), %ecx
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add %ecx, %eax
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# endif
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#endif
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RETURN
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@ -1541,12 +1517,10 @@ L(bk_write_3bytes):
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movw %cx, 1(%edx)
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movzbl (%eax), %eax
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movb %al, (%edx)
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#ifndef USE_AS_BCOPY
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movl DEST(%esp), %eax
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# ifdef USE_AS_MEMPCPY
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#ifdef USE_AS_MEMPCPY
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movl LEN(%esp), %ecx
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add %ecx, %eax
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# endif
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#endif
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RETURN_END
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@ -29,15 +29,9 @@
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# define MEMCPY_CHK __memcpy_chk_ssse3
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# endif
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# ifdef USE_AS_BCOPY
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# define SRC PARMS
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# define DEST SRC+4
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# define LEN DEST+4
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# else
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# define DEST PARMS
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# define SRC DEST+4
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# define LEN SRC+4
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# endif
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# define DEST PARMS
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# define SRC DEST+4
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# define LEN SRC+4
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# define CFI_PUSH(REG) \
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cfi_adjust_cfa_offset (4); \
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@ -88,7 +82,7 @@
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# endif
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.section .text.ssse3,"ax",@progbits
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# if !defined USE_AS_BCOPY && defined SHARED
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# ifdef SHARED
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ENTRY (MEMCPY_CHK)
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movl 12(%esp), %eax
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cmpl %eax, 16(%esp)
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@ -1979,12 +1973,10 @@ L(fwd_write_12bytes):
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L(fwd_write_4bytes):
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movl -4(%eax), %ecx
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movl %ecx, -4(%edx)
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# ifndef USE_AS_BCOPY
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# ifdef USE_AS_MEMPCPY
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# ifdef USE_AS_MEMPCPY
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movl %edx, %eax
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# else
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# else
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movl DEST(%esp), %eax
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# endif
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# endif
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RETURN
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@ -2005,12 +1997,10 @@ L(fwd_write_8bytes):
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movq -8(%eax), %xmm0
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movq %xmm0, -8(%edx)
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L(fwd_write_0bytes):
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# ifndef USE_AS_BCOPY
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# ifdef USE_AS_MEMPCPY
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# ifdef USE_AS_MEMPCPY
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movl %edx, %eax
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# else
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# else
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movl DEST(%esp), %eax
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# endif
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# endif
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RETURN
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@ -2020,12 +2010,10 @@ L(fwd_write_5bytes):
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movl -4(%eax), %eax
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movl %ecx, -5(%edx)
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movl %eax, -4(%edx)
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# ifndef USE_AS_BCOPY
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# ifdef USE_AS_MEMPCPY
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# ifdef USE_AS_MEMPCPY
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movl %edx, %eax
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# else
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# else
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movl DEST(%esp), %eax
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# endif
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# endif
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RETURN
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@ -2049,12 +2037,10 @@ L(fwd_write_13bytes):
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movl %ecx, -5(%edx)
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movzbl -1(%eax), %ecx
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movb %cl, -1(%edx)
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# ifndef USE_AS_BCOPY
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# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2077,12 +2063,10 @@ L(fwd_write_9bytes):
|
||||
L(fwd_write_1bytes):
|
||||
movzbl -1(%eax), %ecx
|
||||
movb %cl, -1(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2107,12 +2091,10 @@ L(fwd_write_6bytes):
|
||||
movl %ecx, -6(%edx)
|
||||
movzwl -2(%eax), %ecx
|
||||
movw %cx, -2(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2135,12 +2117,10 @@ L(fwd_write_10bytes):
|
||||
L(fwd_write_2bytes):
|
||||
movzwl -2(%eax), %ecx
|
||||
movw %cx, -2(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2167,12 +2147,10 @@ L(fwd_write_7bytes):
|
||||
movzbl -1(%eax), %eax
|
||||
movw %cx, -3(%edx)
|
||||
movb %al, -1(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2197,12 +2175,10 @@ L(fwd_write_3bytes):
|
||||
movzbl -1(%eax), %eax
|
||||
movw %cx, -3(%edx)
|
||||
movb %al, -1(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2217,12 +2193,10 @@ L(fwd_write_8bytes_align):
|
||||
movq -8(%eax), %xmm0
|
||||
movq %xmm0, -8(%edx)
|
||||
L(fwd_write_0bytes_align):
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2233,12 +2207,10 @@ L(fwd_write_32bytes_align):
|
||||
L(fwd_write_16bytes_align):
|
||||
movdqa -16(%eax), %xmm0
|
||||
movdqa %xmm0, -16(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2248,12 +2220,10 @@ L(fwd_write_5bytes_align):
|
||||
movl -4(%eax), %eax
|
||||
movl %ecx, -5(%edx)
|
||||
movl %eax, -4(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2271,12 +2241,10 @@ L(fwd_write_13bytes_align):
|
||||
movl %ecx, -5(%edx)
|
||||
movzbl -1(%eax), %ecx
|
||||
movb %cl, -1(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2291,12 +2259,10 @@ L(fwd_write_21bytes_align):
|
||||
movl %ecx, -5(%edx)
|
||||
movzbl -1(%eax), %ecx
|
||||
movb %cl, -1(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2313,12 +2279,10 @@ L(fwd_write_9bytes_align):
|
||||
L(fwd_write_1bytes_align):
|
||||
movzbl -1(%eax), %ecx
|
||||
movb %cl, -1(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2331,12 +2295,10 @@ L(fwd_write_17bytes_align):
|
||||
movdqa %xmm0, -17(%edx)
|
||||
movzbl -1(%eax), %ecx
|
||||
movb %cl, -1(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2355,12 +2317,10 @@ L(fwd_write_6bytes_align):
|
||||
movl %ecx, -6(%edx)
|
||||
movzwl -2(%eax), %ecx
|
||||
movw %cx, -2(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2375,12 +2335,10 @@ L(fwd_write_22bytes_align):
|
||||
movl %ecx, -6(%edx)
|
||||
movzwl -2(%eax), %ecx
|
||||
movw %cx, -2(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2397,12 +2355,10 @@ L(fwd_write_10bytes_align):
|
||||
L(fwd_write_2bytes_align):
|
||||
movzwl -2(%eax), %ecx
|
||||
movw %cx, -2(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2415,12 +2371,10 @@ L(fwd_write_18bytes_align):
|
||||
movdqa %xmm0, -18(%edx)
|
||||
movzwl -2(%eax), %ecx
|
||||
movw %cx, -2(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2441,12 +2395,10 @@ L(fwd_write_7bytes_align):
|
||||
movzbl -1(%eax), %eax
|
||||
movw %cx, -3(%edx)
|
||||
movb %al, -1(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2463,12 +2415,10 @@ L(fwd_write_23bytes_align):
|
||||
movzbl -1(%eax), %eax
|
||||
movw %cx, -3(%edx)
|
||||
movb %al, -1(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2487,12 +2437,10 @@ L(fwd_write_3bytes_align):
|
||||
movzbl -1(%eax), %eax
|
||||
movw %cx, -3(%edx)
|
||||
movb %al, -1(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2507,12 +2455,10 @@ L(fwd_write_19bytes_align):
|
||||
movzbl -1(%eax), %eax
|
||||
movw %cx, -3(%edx)
|
||||
movb %al, -1(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2529,12 +2475,10 @@ L(fwd_write_12bytes_align):
|
||||
L(fwd_write_4bytes_align):
|
||||
movl -4(%eax), %ecx
|
||||
movl %ecx, -4(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2547,12 +2491,10 @@ L(fwd_write_20bytes_align):
|
||||
movdqa %xmm0, -20(%edx)
|
||||
movl -4(%eax), %ecx
|
||||
movl %ecx, -4(%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl %edx, %eax
|
||||
# else
|
||||
# else
|
||||
movl DEST(%esp), %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN_END
|
||||
|
||||
@ -2646,12 +2588,10 @@ L(bk_write_4bytes):
|
||||
movl (%eax), %ecx
|
||||
movl %ecx, (%edx)
|
||||
L(bk_write_0bytes):
|
||||
# ifndef USE_AS_BCOPY
|
||||
movl DEST(%esp), %eax
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl LEN(%esp), %ecx
|
||||
add %ecx, %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2671,12 +2611,10 @@ L(bk_write_16bytes):
|
||||
L(bk_write_8bytes):
|
||||
movq (%eax), %xmm0
|
||||
movq %xmm0, (%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
movl DEST(%esp), %eax
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl LEN(%esp), %ecx
|
||||
add %ecx, %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2702,12 +2640,10 @@ L(bk_write_5bytes):
|
||||
L(bk_write_1bytes):
|
||||
movzbl (%eax), %ecx
|
||||
movb %cl, (%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
movl DEST(%esp), %eax
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl LEN(%esp), %ecx
|
||||
add %ecx, %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2729,12 +2665,10 @@ L(bk_write_9bytes):
|
||||
movq %xmm0, 1(%edx)
|
||||
movzbl (%eax), %ecx
|
||||
movb %cl, (%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
movl DEST(%esp), %eax
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl LEN(%esp), %ecx
|
||||
add %ecx, %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2759,12 +2693,10 @@ L(bk_write_6bytes):
|
||||
movl %ecx, 2(%edx)
|
||||
movzwl (%eax), %ecx
|
||||
movw %cx, (%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
movl DEST(%esp), %eax
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl LEN(%esp), %ecx
|
||||
add %ecx, %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2787,12 +2719,10 @@ L(bk_write_10bytes):
|
||||
L(bk_write_2bytes):
|
||||
movzwl (%eax), %ecx
|
||||
movw %cx, (%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
movl DEST(%esp), %eax
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl LEN(%esp), %ecx
|
||||
add %ecx, %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2819,12 +2749,10 @@ L(bk_write_7bytes):
|
||||
movw %cx, 1(%edx)
|
||||
movzbl (%eax), %eax
|
||||
movb %al, (%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
movl DEST(%esp), %eax
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl LEN(%esp), %ecx
|
||||
add %ecx, %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN
|
||||
|
||||
@ -2849,12 +2777,10 @@ L(bk_write_3bytes):
|
||||
movw %cx, 1(%edx)
|
||||
movzbl (%eax), %eax
|
||||
movb %al, (%edx)
|
||||
# ifndef USE_AS_BCOPY
|
||||
movl DEST(%esp), %eax
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
# ifdef USE_AS_MEMPCPY
|
||||
movl LEN(%esp), %ecx
|
||||
add %ecx, %eax
|
||||
# endif
|
||||
# endif
|
||||
RETURN_END
|
||||
|
||||
|
||||
@ -24,15 +24,9 @@
|
||||
# define MEMCPY_CHK __memcpy_chk
|
||||
#endif
|
||||
|
||||
#ifdef USE_AS_BCOPY
|
||||
# define STR2 12
|
||||
# define STR1 STR2+4
|
||||
# define N STR1+4
|
||||
#else
|
||||
# define STR1 12
|
||||
# define STR2 STR1+4
|
||||
# define N STR2+4
|
||||
#endif
|
||||
#define STR1 12
|
||||
#define STR2 STR1+4
|
||||
#define N STR2+4
|
||||
|
||||
#define CFI_PUSH(REG) \
|
||||
cfi_adjust_cfa_offset (4); \
|
||||
@ -46,7 +40,7 @@
|
||||
#define POP(REG) popl REG; CFI_POP (REG)
|
||||
|
||||
.text
|
||||
#if defined SHARED && IS_IN (libc) && !defined USE_AS_BCOPY
|
||||
#if defined SHARED && IS_IN (libc)
|
||||
ENTRY (MEMCPY_CHK)
|
||||
movl 12(%esp), %eax
|
||||
cmpl %eax, 16(%esp)
|
||||
@ -90,6 +84,4 @@ L(bwd_write_0bytes):
|
||||
|
||||
END (MEMCPY)
|
||||
|
||||
#ifndef USE_AS_BCOPY
|
||||
libc_hidden_builtin_def (MEMCPY)
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user