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runtime/internal/atomic: add loong64 operators for And/Or

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These primitives will be used by the new And/Or sync/atomic apis.

For #61395
This commit is contained in:
Mauri de Souza Meneguzzo 2023-09-30 12:25:09 -03:00
parent 36e75f67ab
commit 0d0fca82b0
3 changed files with 82 additions and 3 deletions
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7
src/runtime/internal/atomic/atomic_andor_test.go
View File

@ -1,4 +1,6 @@
// +build wasm
//go:build wasm || loong64
// +build wasm loong64
//
// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
@ -9,8 +11,8 @@
package atomic_test
import (
"testing"
"runtime/internal/atomic"
"testing"
)
func TestAnd32(t *testing.T) {
@ -166,4 +168,3 @@ func TestOr64(t *testing.T) {
}
}
}

18
src/runtime/internal/atomic/atomic_loong64.go
View File

@ -59,6 +59,24 @@ func Or8(ptr *uint8, val uint8)
//go:noescape
func Or(ptr *uint32, val uint32)
//go:noescape
func And32(ptr *uint32, val uint32) uint32
//go:noescape
func Or32(ptr *uint32, val uint32) uint32
//go:noescape
func And64(ptr *uint64, val uint64) uint64
//go:noescape
func Or64(ptr *uint64, val uint64) uint64
//go:noescape
func Anduintptr(ptr *uintptr, val uintptr) uintptr
//go:noescape
func Oruintptr(ptr *uintptr, val uintptr) uintptr
// NOTE: Do not add atomicxor8 (XOR is not idempotent).
//go:noescape

60
src/runtime/internal/atomic/atomic_loong64.s
View File

@ -256,6 +256,66 @@ TEXT ·And(SB), NOSPLIT, $0-12
DBAR
RET
// func Or32(addr *uint32, v uint32) old uint32
TEXT ·Or32(SB), NOSPLIT, $0-20
MOVV ptr+0(FP), R4
MOVW val+8(FP), R5
DBAR
LL (R4), R6
OR R5, R6, R7
SC R7, (R4)
BEQ R7, -4(PC)
DBAR
MOVW R6, ret+16(FP)
RET
// func And32(addr *uint32, v uint32) old uint32
TEXT ·And32(SB), NOSPLIT, $0-20
MOVV ptr+0(FP), R4
MOVW val+8(FP), R5
DBAR
LL (R4), R6
AND R5, R6, R7
SC R7, (R4)
BEQ R7, -4(PC)
DBAR
MOVW R6, ret+16(FP)
RET
// func Or64(addr *uint64, v uint64) old uint64
TEXT ·Or64(SB), NOSPLIT, $0-24
MOVV ptr+0(FP), R4
MOVV val+8(FP), R5
DBAR
LLV (R4), R6
OR R5, R6, R7
SCV R7, (R4)
BEQ R7, -4(PC)
DBAR
MOVV R6, ret+16(FP)
RET
// func And64(addr *uint64, v uint64) old uint64
TEXT ·And64(SB), NOSPLIT, $0-24
MOVV ptr+0(FP), R4
MOVV val+8(FP), R5
DBAR
LLV (R4), R6
AND R5, R6, R7
SCV R7, (R4)
BEQ R7, -4(PC)
DBAR
MOVV R6, ret+16(FP)
RET
// func Anduintptr(addr *uintptr, v uintptr) old uintptr
TEXT ·Anduintptr(SB), NOSPLIT, $0-24
JMP ·And64(SB)
// func Oruintptr(addr *uintptr, v uintptr) old uintptr
TEXT ·Oruintptr(SB), NOSPLIT, $0-24
JMP ·Or64(SB)
// uint32 runtime∕internal∕atomic·Load(uint32 volatile* ptr)
TEXT ·Load(SB),NOSPLIT|NOFRAME,$0-12
MOVV ptr+0(FP), R19