runtime/internal/atomic: add riscv64 operators for And/Or

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

For #61395

Change-Id: I4062d6317e01afd94d3588f5425237723ab15ade
GitHub-Last-Rev: c0a8d8f
GitHub-Pull-Request: #63272
Reviewed-on: https://go-review.googlesource.com/c/go/+/531575
Reviewed-by: Than McIntosh <[email protected]>
Run-TryBot: Mauri de Souza Meneguzzo <[email protected]>
Reviewed-by: Mark Ryan <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Reviewed-by: Joel Sing <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>

Author: mauri870

src/runtime/internal/atomic/atomic_andor_test.go

@@ -1,4 +1,4 @@
-//go:build wasm || ppc64 || ppc64le
+//go:build ppc64 || ppc64le || riscv64 || wasm
 
 //
 // Copyright 2023 The Go Authors. All rights reserved.

src/runtime/internal/atomic/atomic_riscv64.go

@@ -57,6 +57,24 @@ func And(ptr *uint32, val uint32)
 //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
+
 //go:noescape
 func Cas64(ptr *uint64, old, new uint64) bool
 

src/runtime/internal/atomic/atomic_riscv64.s

@@ -282,3 +282,43 @@ TEXT ·Or(SB), NOSPLIT, $0-12
 	MOVW	val+8(FP), A1
 	AMOORW	A1, (A0), ZERO
 	RET
+
+// func Or32(ptr *uint32, val uint32) uint32
+TEXT ·Or32(SB), NOSPLIT, $0-20
+	MOV	ptr+0(FP), A0
+	MOVW	val+8(FP), A1
+	AMOORW	A1, (A0), A2
+	MOVW	A2, ret+16(FP)
+	RET
+
+// func And32(ptr *uint32, val uint32) uint32
+TEXT ·And32(SB), NOSPLIT, $0-20
+	MOV	ptr+0(FP), A0
+	MOVW	val+8(FP), A1
+	AMOANDW	A1, (A0), A2
+	MOVW	A2, ret+16(FP)
+	RET
+
+// func Or64(ptr *uint64, val uint64) uint64
+TEXT ·Or64(SB), NOSPLIT, $0-24
+	MOV	ptr+0(FP), A0
+	MOV	val+8(FP), A1
+	AMOORD	A1, (A0), A2
+	MOV	A2, ret+16(FP)
+	RET
+
+// func And64(ptr *uint64, val uint64) uint64
+TEXT ·And64(SB), NOSPLIT, $0-24
+	MOV	ptr+0(FP), A0
+	MOV	val+8(FP), A1
+	AMOANDD	A1, (A0), A2
+	MOV	A2, ret+16(FP)
+	RET
+
+// func Anduintptr(ptr *uintptr, val uintptr) uintptr
+TEXT ·Anduintptr(SB), NOSPLIT, $0-24
+	JMP	·And64(SB)
+
+// func Oruintptr(ptr *uintptr, val uintptr) uintptr
+TEXT ·Oruintptr(SB), NOSPLIT, $0-24
+	JMP	·Or64(SB)