mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-13 23:00:22 +00:00
79 lines
2.4 KiB
ArmAsm
79 lines
2.4 KiB
ArmAsm
/* Multiple versions of memcpy
|
|
All versions must be listed in ifunc-impl-list.c.
|
|
Copyright (C) 2010-2017 Free Software Foundation, Inc.
|
|
Contributed by Intel Corporation.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <sysdep.h>
|
|
#include <init-arch.h>
|
|
|
|
/* Define multiple versions only for the definition in lib and for
|
|
DSO. In static binaries we need memcpy before the initialization
|
|
happened. */
|
|
#if defined SHARED && IS_IN (libc)
|
|
.text
|
|
ENTRY(memcpy)
|
|
.type memcpy, @gnu_indirect_function
|
|
LOAD_GOT_AND_RTLD_GLOBAL_RO
|
|
LOAD_FUNC_GOT_EAX (__memcpy_ia32)
|
|
HAS_CPU_FEATURE (SSE2)
|
|
jz 2f
|
|
LOAD_FUNC_GOT_EAX (__memcpy_sse2_unaligned)
|
|
HAS_ARCH_FEATURE (Fast_Unaligned_Load)
|
|
jnz 2f
|
|
HAS_CPU_FEATURE (SSSE3)
|
|
jz 2f
|
|
LOAD_FUNC_GOT_EAX (__memcpy_ssse3)
|
|
HAS_ARCH_FEATURE (Fast_Rep_String)
|
|
jz 2f
|
|
LOAD_FUNC_GOT_EAX (__memcpy_ssse3_rep)
|
|
2: ret
|
|
END(memcpy)
|
|
|
|
# undef ENTRY
|
|
# define ENTRY(name) \
|
|
.type __memcpy_ia32, @function; \
|
|
.p2align 4; \
|
|
.globl __memcpy_ia32; \
|
|
.hidden __memcpy_ia32; \
|
|
__memcpy_ia32: cfi_startproc; \
|
|
CALL_MCOUNT
|
|
# undef END
|
|
# define END(name) \
|
|
cfi_endproc; .size __memcpy_ia32, .-__memcpy_ia32
|
|
|
|
# undef ENTRY_CHK
|
|
# define ENTRY_CHK(name) \
|
|
.type __memcpy_chk_ia32, @function; \
|
|
.globl __memcpy_chk_ia32; \
|
|
.p2align 4; \
|
|
__memcpy_chk_ia32: cfi_startproc; \
|
|
CALL_MCOUNT
|
|
# undef END_CHK
|
|
# define END_CHK(name) \
|
|
cfi_endproc; .size __memcpy_chk_ia32, .-__memcpy_chk_ia32
|
|
|
|
# undef libc_hidden_builtin_def
|
|
/* IFUNC doesn't work with the hidden functions in shared library since
|
|
they will be called without setting up EBX needed for PLT which is
|
|
used by IFUNC. */
|
|
# define libc_hidden_builtin_def(name) \
|
|
.globl __GI_memcpy; __GI_memcpy = __memcpy_ia32
|
|
#endif
|
|
|
|
#include "../memcpy.S"
|