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_MIPS64_MEMCMP16_MIPS64_S_ 18 #define ART_RUNTIME_ARCH_MIPS64_MEMCMP16_MIPS64_S_ 19 20 #include "asm_support_mips64.S" 21 22 .set noreorder 23 24 // u4 __memcmp16(const u2*, const u2*, size_t); 25 ENTRY_NO_GP __memcmp16 26 move $t0, $zero 27 move $t1, $zero 28 beqz $a2, done /* 0 length string */ 29 nop 30 beq $a0, $a1, done /* addresses are identical */ 31 nop 32 33 1: 34 lhu $t0, 0($a0) 35 lhu $t1, 0($a1) 36 bne $t0, $t1, done 37 nop 38 daddu $a0, 2 39 daddu $a1, 2 40 dsubu $a2, 1 41 bnez $a2, 1b 42 nop 43 44 done: 45 dsubu $v0, $t0, $t1 46 j $ra 47 nop 48 END __memcmp16 49 50 #endif // ART_RUNTIME_ARCH_MIPS64_MEMCMP16_MIPS64_S_ 51
