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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

Change-Id: I64b2e599e4f91412e0342aa01f5fd53271e9a333
GitHub-Last-Rev: 9755db5406
GitHub-Pull-Request: golang/go#63314
Reviewed-on: https://go-review.googlesource.com/c/go/+/531895
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Mauri de Souza Meneguzzo 2024-01-24 10:19:30 +00:00 committed by Keith Randall
parent e8d87728bd
commit 76ff0caa59
3 changed files with 79 additions and 1 deletions
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2
src/runtime/internal/atomic/atomic_andor_generic.go
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build arm || s390x || loong64 || mips || mipsle || mips64 || mips64le || wasm
//go:build arm || s390x || mips || mipsle || mips64 || mips64le || wasm
package atomic

18
src/runtime/internal/atomic/atomic_loong64.go
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@ -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