diff options
Diffstat (limited to 'runtime/arch/mips/memcmp16_mips.S')
| -rw-r--r-- | runtime/arch/mips/memcmp16_mips.S | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/runtime/arch/mips/memcmp16_mips.S b/runtime/arch/mips/memcmp16_mips.S new file mode 100644 index 0000000..571ad75 --- /dev/null +++ b/runtime/arch/mips/memcmp16_mips.S @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2014 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef ART_RUNTIME_ARCH_MIPS_MEMCMP16_MIPS_S_ +#define ART_RUNTIME_ARCH_MIPS_MEMCMP16_MIPS_S_ + +#include "asm_support_mips.h" + +// u4 __memcmp16(const u2*, const u2*, size_t); +ENTRY(__memcmp16) + li t0,0 + li t1,0 + beqz a2,done /* 0 length string */ + beq a0,a1,done /* strings are identical */ + + /* Unoptimised... */ +1: lhu t0,0(a0) + lhu t1,0(a1) + addu a1,2 + bne t0,t1,done + addu a0,2 + subu a2,1 + bnez a2,1b + +done: + subu v0,t0,t1 + j ra +END(__memcmp16) + +#endif // ART_RUNTIME_ARCH_MIPS_MEMCMP16_MIPS_S_ |