| /* Multiple versions of memcpy |
| All versions must be listed in ifunc-impl-list.c. |
| Copyright (C) 2013-2014 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* Thumb requires excess IT instructions here. */ |
| #define NO_THUMB |
| #include <sysdep.h> |
| #include <rtld-global-offsets.h> |
| |
| #ifndef NOT_IN_libc |
| /* Under __ARM_NEON__, memcpy_neon.S defines the name memcpy. */ |
| # ifndef __ARM_NEON__ |
| .text |
| ENTRY(memcpy) |
| .type memcpy, %gnu_indirect_function |
| # ifdef __SOFTFP__ |
| ldr r1, .Lmemcpy_arm |
| tst r0, #HWCAP_ARM_VFP |
| ldrne r1, .Lmemcpy_vfp |
| # else |
| ldr r1, .Lmemcpy_vfp |
| # endif |
| tst r0, #HWCAP_ARM_NEON |
| ldrne r1, .Lmemcpy_neon |
| 1: |
| add r0, r1, pc |
| DO_RET(lr) |
| |
| # ifdef __SOFTFP__ |
| .Lmemcpy_arm: |
| .long C_SYMBOL_NAME(__memcpy_arm) - 1b - PC_OFS |
| # endif |
| .Lmemcpy_neon: |
| .long C_SYMBOL_NAME(__memcpy_neon) - 1b - PC_OFS |
| .Lmemcpy_vfp: |
| .long C_SYMBOL_NAME(__memcpy_vfp) - 1b - PC_OFS |
| |
| END(memcpy) |
| |
| libc_hidden_builtin_def (memcpy) |
| #endif /* Not __ARM_NEON__. */ |
| |
| /* These versions of memcpy are defined not to clobber any VFP or NEON |
| registers so they must always call the ARM variant of the memcpy code. */ |
| strong_alias (__memcpy_arm, __aeabi_memcpy) |
| strong_alias (__memcpy_arm, __aeabi_memcpy4) |
| strong_alias (__memcpy_arm, __aeabi_memcpy8) |
| libc_hidden_def (__memcpy_arm) |
| |
| #undef libc_hidden_builtin_def |
| #define libc_hidden_builtin_def(name) |
| #undef weak_alias |
| #define weak_alias(x, y) |
| #undef libc_hidden_def |
| #define libc_hidden_def(name) |
| |
| #define memcpy __memcpy_arm |
| |
| #endif |
| |
| #include "memcpy_impl.S" |
