mirror of
https://github.com/golang/go
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runtime/internal/atomic: added mips64 support.
Change-Id: I2eaf0658771a0ff788429e2f503d116531166315 Reviewed-on: https://go-review.googlesource.com/16834 Reviewed-by: Minux Ma <minux@golang.org>
This commit is contained in:
Yao Zhang
Minux Ma
parent
424738e43e
commit
b2b8559987
9
src/runtime/internal/atomic/arch1_mips64.go
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9
src/runtime/internal/atomic/arch1_mips64.go
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@ -0,0 +1,9 @@
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// Copyright 2015 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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package atomic
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const (
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_CacheLineSize = 32
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)
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9
src/runtime/internal/atomic/arch1_mips64le.go
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9
src/runtime/internal/atomic/arch1_mips64le.go
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@ -0,0 +1,9 @@
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// Copyright 2015 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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package atomic
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const (
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_CacheLineSize = 32
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)
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231
src/runtime/internal/atomic/asm_mips64x.s
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231
src/runtime/internal/atomic/asm_mips64x.s
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@ -0,0 +1,231 @@
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// Copyright 2015 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 "textflag.h"
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#define LL(base, rt) WORD $((060<<26)|((base)<<21)|((rt)<<16))
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#define LLV(base, rt) WORD $((064<<26)|((base)<<21)|((rt)<<16))
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#define SC(base, rt) WORD $((070<<26)|((base)<<21)|((rt)<<16))
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#define SCV(base, rt) WORD $((074<<26)|((base)<<21)|((rt)<<16))
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#define SYNC WORD $0xf
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// bool cas(uint32 *ptr, uint32 old, uint32 new)
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// Atomically:
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// if(*val == old){
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// *val = new;
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// return 1;
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// } else
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// return 0;
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TEXT ·Cas(SB), NOSPLIT, $0-17
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MOVV ptr+0(FP), R1
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MOVW old+8(FP), R2
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MOVW new+12(FP), R5
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SYNC
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cas_again:
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MOVV R5, R3
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LL(1, 4) // R4 = *R1
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BNE R2, R4, cas_fail
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SC(1, 3) // *R1 = R3
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BEQ R3, cas_again
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MOVV $1, R1
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MOVB R1, ret+16(FP)
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SYNC
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RET
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cas_fail:
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MOVV $0, R1
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JMP -4(PC)
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// bool cas64(uint64 *ptr, uint64 old, uint64 new)
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// Atomically:
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// if(*val == *old){
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// *val = new;
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// return 1;
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// } else {
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// return 0;
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// }
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TEXT ·Cas64(SB), NOSPLIT, $0-25
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MOVV ptr+0(FP), R1
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MOVV old+8(FP), R2
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MOVV new+16(FP), R5
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SYNC
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cas64_again:
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MOVV R5, R3
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LLV(1, 4) // R4 = *R1
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BNE R2, R4, cas64_fail
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SCV(1, 3) // *R1 = R3
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BEQ R3, cas64_again
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MOVV $1, R1
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MOVB R1, ret+24(FP)
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SYNC
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RET
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cas64_fail:
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MOVV $0, R1
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JMP -4(PC)
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TEXT ·Casuintptr(SB), NOSPLIT, $0-25
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JMP ·Cas64(SB)
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TEXT ·Loaduintptr(SB), NOSPLIT|NOFRAME, $0-16
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JMP ·Load64(SB)
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TEXT ·Loaduint(SB), NOSPLIT|NOFRAME, $0-16
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JMP ·Load64(SB)
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TEXT ·Storeuintptr(SB), NOSPLIT, $0-16
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JMP ·Store64(SB)
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TEXT ·Xadduintptr(SB), NOSPLIT, $0-24
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JMP ·Xadd64(SB)
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TEXT ·Loadint64(SB), NOSPLIT, $0-16
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JMP ·Load64(SB)
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TEXT ·Xaddint64(SB), NOSPLIT, $0-16
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JMP ·Xadd64(SB)
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// bool casp(void **val, void *old, void *new)
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// Atomically:
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// if(*val == old){
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// *val = new;
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// return 1;
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// } else
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// return 0;
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TEXT ·Casp1(SB), NOSPLIT, $0-25
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JMP runtime∕internal∕atomic·Cas64(SB)
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// uint32 xadd(uint32 volatile *ptr, int32 delta)
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// Atomically:
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// *val += delta;
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// return *val;
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TEXT ·Xadd(SB), NOSPLIT, $0-20
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MOVV ptr+0(FP), R2
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MOVW delta+8(FP), R3
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SYNC
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LL(2, 1) // R1 = *R2
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ADDU R1, R3, R4
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MOVV R4, R1
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SC(2, 4) // *R2 = R4
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BEQ R4, -4(PC)
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MOVW R1, ret+16(FP)
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SYNC
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RET
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TEXT ·Xadd64(SB), NOSPLIT, $0-24
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MOVV ptr+0(FP), R2
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MOVV delta+8(FP), R3
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SYNC
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LLV(2, 1) // R1 = *R2
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ADDVU R1, R3, R4
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MOVV R4, R1
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SCV(2, 4) // *R2 = R4
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BEQ R4, -4(PC)
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MOVV R1, ret+16(FP)
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SYNC
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RET
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TEXT ·Xchg(SB), NOSPLIT, $0-20
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MOVV ptr+0(FP), R2
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MOVW new+8(FP), R5
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SYNC
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MOVV R5, R3
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LL(2, 1) // R1 = *R2
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SC(2, 3) // *R2 = R3
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BEQ R3, -3(PC)
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MOVW R1, ret+16(FP)
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SYNC
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RET
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TEXT ·Xchg64(SB), NOSPLIT, $0-24
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MOVV ptr+0(FP), R2
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MOVV new+8(FP), R5
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SYNC
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MOVV R5, R3
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LLV(2, 1) // R1 = *R2
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SCV(2, 3) // *R2 = R3
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BEQ R3, -3(PC)
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MOVV R1, ret+16(FP)
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SYNC
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RET
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TEXT ·Xchguintptr(SB), NOSPLIT, $0-24
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JMP ·Xchg64(SB)
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TEXT ·Storep1(SB), NOSPLIT, $0-16
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JMP ·Store64(SB)
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TEXT ·Store(SB), NOSPLIT, $0-12
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MOVV ptr+0(FP), R1
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MOVW val+8(FP), R2
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SYNC
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MOVW R2, 0(R1)
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SYNC
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RET
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TEXT ·Store64(SB), NOSPLIT, $0-16
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MOVV ptr+0(FP), R1
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MOVV val+8(FP), R2
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SYNC
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MOVV R2, 0(R1)
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SYNC
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RET
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// void Or8(byte volatile*, byte);
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TEXT ·Or8(SB), NOSPLIT, $0-9
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MOVV ptr+0(FP), R1
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MOVBU val+8(FP), R2
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// Align ptr down to 4 bytes so we can use 32-bit load/store.
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MOVV $~3, R3
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AND R1, R3
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// Compute val shift.
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#ifdef GOARCH_mips64
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// Big endian. ptr = ptr ^ 3
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XOR $3, R1
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#endif
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// R4 = ((ptr & 3) * 8)
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AND $3, R1, R4
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SLLV $3, R4
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// Shift val for aligned ptr. R2 = val << R4
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SLLV R4, R2
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SYNC
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LL(3, 4) // R4 = *R3
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OR R2, R4
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SC(3, 4) // *R3 = R4
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BEQ R4, -4(PC)
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SYNC
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RET
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// void And8(byte volatile*, byte);
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TEXT ·And8(SB), NOSPLIT, $0-9
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MOVV ptr+0(FP), R1
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MOVBU val+8(FP), R2
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// Align ptr down to 4 bytes so we can use 32-bit load/store.
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MOVV $~3, R3
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AND R1, R3
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// Compute val shift.
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#ifdef GOARCH_mips64
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// Big endian. ptr = ptr ^ 3
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XOR $3, R1
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#endif
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// R4 = ((ptr & 3) * 8)
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AND $3, R1, R4
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SLLV $3, R4
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// Shift val for aligned ptr. R2 = val << R4 | ^(0xFF << R4)
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MOVV $0xFF, R5
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SLLV R4, R2
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SLLV R4, R5
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NOR R0, R5
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OR R5, R2
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SYNC
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LL(3, 4) // R4 = *R3
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AND R2, R4
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SC(3, 4) // *R3 = R4
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BEQ R4, -4(PC)
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SYNC
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RET
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56
src/runtime/internal/atomic/atomic_mips64x.go
Normal file
56
src/runtime/internal/atomic/atomic_mips64x.go
Normal file
@ -0,0 +1,56 @@
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// Copyright 2015 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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package atomic
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import "unsafe"
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//go:noescape
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func Xadd(ptr *uint32, delta int32) uint32
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//go:noescape
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func Xadd64(ptr *uint64, delta int64) uint64
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//go:noescape
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func Xadduintptr(ptr *uintptr, delta uintptr) uintptr
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//go:noescape
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func Xchg(ptr *uint32, new uint32) uint32
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//go:noescape
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func Xchg64(ptr *uint64, new uint64) uint64
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//go:noescape
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func Xchguintptr(ptr *uintptr, new uintptr) uintptr
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//go:noescape
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func Load(ptr *uint32) uint32
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//go:noescape
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func Load64(ptr *uint64) uint64
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//go:noescape
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func Loadp(ptr unsafe.Pointer) unsafe.Pointer
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//go:noescape
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func And8(ptr *uint8, val uint8)
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//go:noescape
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func Or8(ptr *uint8, val uint8)
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// NOTE: Do not add atomicxor8 (XOR is not idempotent).
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//go:noescape
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func Cas64(ptr *uint64, old, new uint64) bool
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//go:noescape
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func Store(ptr *uint32, val uint32)
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//go:noescape
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func Store64(ptr *uint64, val uint64)
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// NO go:noescape annotation; see atomic_pointer.go.
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func Storep1(ptr unsafe.Pointer, val unsafe.Pointer)
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36
src/runtime/internal/atomic/atomic_mips64x.s
Normal file
36
src/runtime/internal/atomic/atomic_mips64x.s
Normal file
@ -0,0 +1,36 @@
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// Copyright 2015 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 "textflag.h"
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#define SYNC WORD $0xf
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// uint32 runtime∕internal∕atomic·Load(uint32 volatile* addr)
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TEXT ·Load(SB),NOSPLIT,$-8-12
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MOVV addr+0(FP), R1
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SYNC
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MOVWU 0(R1), R1
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SYNC
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MOVW R1, ret+8(FP)
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RET
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// uint64 runtime∕internal∕atomic·Load64(uint64 volatile* addr)
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TEXT ·Load64(SB),NOSPLIT,$-8-16
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MOVV addr+0(FP), R1
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SYNC
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MOVV 0(R1), R1
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SYNC
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MOVV R1, ret+8(FP)
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RET
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// void *runtime∕internal∕atomic·Loadp(void *volatile *addr)
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TEXT ·Loadp(SB),NOSPLIT,$-8-16
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MOVV addr+0(FP), R1
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SYNC
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MOVV 0(R1), R1
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SYNC
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MOVV R1, ret+8(FP)
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RET
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