1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_RUNTIME_ARCH_MIPS_MEMCMP16_MIPS_S_
18#define ART_RUNTIME_ARCH_MIPS_MEMCMP16_MIPS_S_
19
20#include "asm_support_mips.S"
21
22// u4 __memcmp16(const u2*, const u2*, size_t);
23ENTRY_NO_GP __memcmp16
24  li  $t0,0
25  li  $t1,0
26  beqz  $a2,done   /* 0 length string */
27  beq $a0,$a1,done    /* strings are identical */
28
29  /* Unoptimized... */
301:  lhu $t0,0($a0)
31  lhu $t1,0($a1)
32  addu  $a1,2
33  bne $t0,$t1,done
34  addu  $a0,2
35  subu  $a2,1
36  bnez  $a2,1b
37
38done:
39  subu  $v0,$t0,$t1
40  j $ra
41END __memcmp16
42
43#endif  // ART_RUNTIME_ARCH_MIPS_MEMCMP16_MIPS_S_
44