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sync/atomic: added support for mips64{,le}

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Change-Id: Ibe6c345afd4cbae7e2542a350043fbb6b81d5678
Reviewed-on: https://go-review.googlesource.com/14450
Reviewed-by: Minux Ma <minux@golang.org>
This commit is contained in:
Yao Zhang 2015-09-10 08:08:48 -04:00 committed by Minux Ma
parent 4f19cb7011
commit d58081cf0a
1 changed files with 181 additions and 0 deletions
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181
src/sync/atomic/asm_mips64x.s Normal file
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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build mips64 mips64le
#include "textflag.h"
#define LL(base, rt) WORD $((060<<26)|((base)<<21)|((rt)<<16))
#define LLV(base, rt) WORD $((064<<26)|((base)<<21)|((rt)<<16))
#define SC(base, rt) WORD $((070<<26)|((base)<<21)|((rt)<<16))
#define SCV(base, rt) WORD $((074<<26)|((base)<<21)|((rt)<<16))
#define SYNC WORD $0xf
TEXT ·SwapInt32(SB),NOSPLIT,$0-20
JMP ·SwapUint32(SB)
TEXT ·SwapUint32(SB),NOSPLIT,$0-20
MOVV addr+0(FP), R2
MOVW new+8(FP), R5
SYNC
MOVV R5, R3
LL(2, 1) // R1 = *R2
SC(2, 3) // *R2 = R3
BEQ R3, -3(PC)
MOVW R1, old+16(FP)
SYNC
RET
TEXT ·SwapInt64(SB),NOSPLIT,$0-24
JMP ·SwapUint64(SB)
TEXT ·SwapUint64(SB),NOSPLIT,$0-24
MOVV addr+0(FP), R2
MOVV new+8(FP), R5
SYNC
MOVV R5, R3
LLV(2, 1) // R1 = *R2
SCV(2, 3) // *R2 = R3
BEQ R3, -3(PC)
MOVV R1, old+16(FP)
SYNC
RET
TEXT ·SwapUintptr(SB),NOSPLIT,$0-24
JMP ·SwapUint64(SB)
TEXT ·CompareAndSwapInt32(SB),NOSPLIT,$0-17
JMP ·CompareAndSwapUint32(SB)
TEXT ·CompareAndSwapUint32(SB),NOSPLIT,$0-17
MOVV addr+0(FP), R1
MOVW old+8(FP), R2
MOVW new+12(FP), R5
SYNC
cas_again:
MOVV R5, R3
LL(1, 4) // R4 = *R1
BNE R2, R4, cas_fail
SC(1, 3) // *R1 = R3
BEQ R3, cas_again
MOVV $1, R1
MOVB R1, swapped+16(FP)
SYNC
RET
cas_fail:
MOVV $0, R1
JMP -4(PC)
TEXT ·CompareAndSwapUintptr(SB),NOSPLIT,$0-25
JMP ·CompareAndSwapUint64(SB)
TEXT ·CompareAndSwapInt64(SB),NOSPLIT,$0-25
JMP ·CompareAndSwapUint64(SB)
TEXT ·CompareAndSwapUint64(SB),NOSPLIT,$0-25
MOVV addr+0(FP), R1
MOVV old+8(FP), R2
MOVV new+16(FP), R5
SYNC
cas64_again:
MOVV R5, R3
LLV(1, 4) // R4 = *R1
BNE R2, R4, cas64_fail
SCV(1, 3) // *R1 = R3
BEQ R3, cas64_again
MOVV $1, R1
MOVB R1, swapped+24(FP)
SYNC
RET
cas64_fail:
MOVV $0, R1
JMP -4(PC)
TEXT ·AddInt32(SB),NOSPLIT,$0-20
JMP ·AddUint32(SB)
TEXT ·AddUint32(SB),NOSPLIT,$0-20
MOVV addr+0(FP), R2
MOVW delta+8(FP), R3
SYNC
LL(2, 1) // R1 = *R2
ADDU R1, R3, R4
MOVV R4, R1
SC(2, 4) // *R2 = R4
BEQ R4, -4(PC)
MOVW R1, ret+16(FP)
SYNC
RET
TEXT ·AddUintptr(SB),NOSPLIT,$0-24
JMP ·AddUint64(SB)
TEXT ·AddInt64(SB),NOSPLIT,$0-24
JMP ·AddUint64(SB)
TEXT ·AddUint64(SB),NOSPLIT,$0-24
MOVV addr+0(FP), R2
MOVV delta+8(FP), R3
SYNC
LLV(2, 1) // R1 = *R2
ADDVU R1, R3, R4
MOVV R4, R1
SCV(2, 4) // *R2 = R4
BEQ R4, -4(PC)
MOVV R1, ret+16(FP)
SYNC
RET
TEXT ·LoadInt32(SB),NOSPLIT,$0-12
JMP ·LoadUint32(SB)
TEXT ·LoadUint32(SB),NOSPLIT,$0-12
MOVV addr+0(FP), R1
SYNC
MOVWU 0(R1), R1
SYNC
MOVW R1, val+8(FP)
RET
TEXT ·LoadInt64(SB),NOSPLIT,$0-16
JMP ·LoadUint64(SB)
TEXT ·LoadUint64(SB),NOSPLIT,$0-16
MOVV addr+0(FP), R1
SYNC
MOVV 0(R1), R1
SYNC
MOVV R1, val+8(FP)
RET
TEXT ·LoadUintptr(SB),NOSPLIT,$0-16
JMP ·LoadPointer(SB)
TEXT ·LoadPointer(SB),NOSPLIT,$0-16
JMP ·LoadUint64(SB)
TEXT ·StoreInt32(SB),NOSPLIT,$0-12
JMP ·StoreUint32(SB)
TEXT ·StoreUint32(SB),NOSPLIT,$0-12
MOVV addr+0(FP), R1
MOVW val+8(FP), R2
SYNC
MOVW R2, 0(R1)
SYNC
RET
TEXT ·StoreInt64(SB),NOSPLIT,$0-16
JMP ·StoreUint64(SB)
TEXT ·StoreUint64(SB),NOSPLIT,$0-16
MOVV addr+0(FP), R1
MOVV val+8(FP), R2
SYNC
MOVV R2, 0(R1)
SYNC
RET
TEXT ·StoreUintptr(SB),NOSPLIT,$0-16
JMP ·StoreUint64(SB)