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

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

For #61395

Author: mauri870

src/runtime/internal/atomic/atomic_andor_test.go

@@ -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) {
 		}
 	}
 }
-

src/runtime/internal/atomic/atomic_loong64.go

@@ -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

src/runtime/internal/atomic/atomic_loong64.s

@@ -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