runtime/internal/atomic: add s390x operators for And/Or

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

For #61395

Change-Id: Ia9b4877048002d3d7d1dffa2311d0ec5f38e4ee5
GitHub-Last-Rev: 20dea11
GitHub-Pull-Request: #63318
Reviewed-on: https://go-review.googlesource.com/c/go/+/531678
TryBot-Result: Gopher Robot <[email protected]>
Reviewed-by: Keith Randall <[email protected]>
Reviewed-by: Michael Knyszek <[email protected]>
Reviewed-by: Keith Randall <[email protected]>
Run-TryBot: Mauri de Souza Meneguzzo <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Cherry Mui <[email protected]>

Author: mauri870

src/runtime/internal/atomic/atomic_andor_generic.go

@@ -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 || mips || mipsle || mips64 || mips64le || wasm
+//go:build arm || mips || mipsle || mips64 || mips64le || wasm
 
 package atomic
 

src/runtime/internal/atomic/atomic_s390x.go

@@ -98,6 +98,24 @@ 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 Xadd(ptr *uint32, delta int32) uint32
 

src/runtime/internal/atomic/atomic_s390x.s

@@ -246,3 +246,59 @@ TEXT ·And(SB), NOSPLIT, $0-12
 	MOVW	val+8(FP), R4
 	LAN	R4, R6, 0(R3)        // R6 = *R3; *R3 &= R4; (atomic)
 	RET
+
+// func Or32(addr *uint32, v uint32) old uint32
+TEXT ·Or32(SB), NOSPLIT, $0-20
+	MOVD	ptr+0(FP), R4
+	MOVW	val+8(FP), R5
+	MOVW	(R4), R3
+repeat:
+	OR	R5, R3, R6
+	CS	R3, R6, (R4) // if R3==(R4) then (R4)=R6 else R3=(R4)
+	BNE	repeat
+	MOVW	R3, ret+16(FP)
+	RET
+
+// func And32(addr *uint32, v uint32) old uint32
+TEXT ·And32(SB), NOSPLIT, $0-20
+	MOVD	ptr+0(FP), R4
+	MOVW	val+8(FP), R5
+	MOVW	(R4), R3
+repeat:
+	AND	R5, R3, R6
+	CS	R3, R6, (R4) // if R3==(R4) then (R4)=R6 else R3=(R4)
+	BNE	repeat
+	MOVW	R3, ret+16(FP)
+	RET
+
+// func Or64(addr *uint64, v uint64) old uint64
+TEXT ·Or64(SB), NOSPLIT, $0-24
+	MOVD	ptr+0(FP), R4
+	MOVD	val+8(FP), R5
+	MOVD	(R4), R3
+repeat:
+	OR	R5, R3, R6
+	CSG	R3, R6, (R4) // if R3==(R4) then (R4)=R6 else R3=(R4)
+	BNE	repeat
+	MOVD	R3, ret+16(FP)
+	RET
+
+// func And64(addr *uint64, v uint64) old uint64
+TEXT ·And64(SB), NOSPLIT, $0-24
+	MOVD	ptr+0(FP), R4
+	MOVD	val+8(FP), R5
+	MOVD	(R4), R3
+repeat:
+	AND	R5, R3, R6
+	CSG	R3, R6, (R4) // if R3==(R4) then (R4)=R6 else R3=(R4)
+	BNE	repeat
+	MOVD	R3, ret+16(FP)
+	RET
+
+// func Anduintptr(addr *uintptr, v uintptr) old uintptr
+TEXT ·Anduintptr(SB), NOSPLIT, $0-24
+	BR	·And64(SB)
+
+// func Oruintptr(addr *uintptr, v uintptr) old uintptr
+TEXT ·Oruintptr(SB), NOSPLIT, $0-24
+	BR	·Or64(SB)