mirror of https://github.com/golang/go.git
85 lines
1.5 KiB
ArmAsm
85 lines
1.5 KiB
ArmAsm
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build mips64 mips64le
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#include "go_asm.h"
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#include "textflag.h"
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#define REGCTXT R22
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TEXT ·Equal(SB),NOSPLIT,$0-49
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MOVV a_len+8(FP), R3
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MOVV b_len+32(FP), R4
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BNE R3, R4, noteq // unequal lengths are not equal
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MOVV a_base+0(FP), R1
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MOVV b_base+24(FP), R2
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ADDV R1, R3 // end
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loop:
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BEQ R1, R3, equal // reached the end
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MOVBU (R1), R6
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ADDV $1, R1
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MOVBU (R2), R7
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ADDV $1, R2
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BEQ R6, R7, loop
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noteq:
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MOVB R0, ret+48(FP)
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RET
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equal:
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MOVV $1, R1
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MOVB R1, ret+48(FP)
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RET
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TEXT bytes·Equal(SB),NOSPLIT,$0-49
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FUNCDATA $0, ·Equal·args_stackmap(SB)
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JMP ·Equal(SB)
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// memequal(a, b unsafe.Pointer, size uintptr) bool
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TEXT runtime·memequal(SB),NOSPLIT|NOFRAME,$0-25
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MOVV a+0(FP), R1
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MOVV b+8(FP), R2
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BEQ R1, R2, eq
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MOVV size+16(FP), R3
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ADDV R1, R3, R4
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loop:
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BNE R1, R4, test
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MOVV $1, R1
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MOVB R1, ret+24(FP)
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RET
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test:
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MOVBU (R1), R6
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ADDV $1, R1
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MOVBU (R2), R7
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ADDV $1, R2
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BEQ R6, R7, loop
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MOVB R0, ret+24(FP)
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RET
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eq:
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MOVV $1, R1
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MOVB R1, ret+24(FP)
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RET
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// memequal_varlen(a, b unsafe.Pointer) bool
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TEXT runtime·memequal_varlen(SB),NOSPLIT,$40-17
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MOVV a+0(FP), R1
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MOVV b+8(FP), R2
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BEQ R1, R2, eq
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MOVV 8(REGCTXT), R3 // compiler stores size at offset 8 in the closure
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MOVV R1, 8(R29)
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MOVV R2, 16(R29)
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MOVV R3, 24(R29)
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JAL runtime·memequal(SB)
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MOVBU 32(R29), R1
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MOVB R1, ret+16(FP)
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RET
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eq:
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MOVV $1, R1
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MOVB R1, ret+16(FP)
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RET
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