50 lines
1.2 KiB
ArmAsm
50 lines
1.2 KiB
ArmAsm
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_RUNTIME_ARCH_MIPS64_MEMCMP16_MIPS64_S_
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#define ART_RUNTIME_ARCH_MIPS64_MEMCMP16_MIPS64_S_
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#include "asm_support_mips64.S"
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.set noreorder
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// u4 __memcmp16(const u2*, const u2*, size_t);
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ENTRY_NO_GP __memcmp16
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move $t0, $zero
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move $t1, $zero
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beqz $a2, done /* 0 length string */
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nop
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beq $a0, $a1, done /* addresses are identical */
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nop
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1:
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lhu $t0, 0($a0)
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lhu $t1, 0($a1)
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bne $t0, $t1, done
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nop
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daddu $a0, 2
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daddu $a1, 2
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dsubu $a2, 1
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bnez $a2, 1b
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nop
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done:
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dsubu $v0, $t0, $t1
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j $ra
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nop
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END __memcmp16
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#endif // ART_RUNTIME_ARCH_MIPS64_MEMCMP16_MIPS64_S_
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