Xchg64 - Code Search

src/internal/runtime/atomic/atomic_amd64.s

	MOVL	AX, ret+16(FP)
	RET

// uint64 Xchg64(ptr *uint64, new uint64)
// Atomically:
//	old := *ptr;
//	*ptr = new;
//	return old;
TEXT ·Xchg64(SB), NOSPLIT, $0-24
	MOVQ	ptr+0(FP), BX
	MOVQ	new+8(FP), AX
	XCHGQ	AX, 0(BX)
	MOVQ	AX, ret+16(FP)
	RET

TEXT ·Xchgint32(SB), NOSPLIT, $0-20
	JMP	·Xchg(SB)

TEXT ·Xchgint64(SB), NOSPLIT, $0-24
	JMP	·Xchg64(SB)

TEXT ·Xchguintptr(SB), NOSPLIT, $0-24

Registered: Wed Jun 12 16:32:35 UTC 2024

- Last Modified: Mon Mar 25 19:53:03 UTC 2024

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github.com/golang/go

src/internal/runtime/atomic/atomic_mipsx.go

// license that can be found in the LICENSE file.

//go:build mips || mipsle

// Export some functions via linkname to assembly in sync/atomic.
//
//go:linkname Xadd64
//go:linkname Xchg64
//go:linkname Cas64
//go:linkname Load64
//go:linkname Store64
//go:linkname Or64
//go:linkname And64

package atomic

import (
	"internal/cpu"
	"unsafe"
)

// TODO implement lock striping

Registered: Wed Jun 12 16:32:35 UTC 2024

- Last Modified: Fri May 17 20:08:37 UTC 2024

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github.com/golang/go

src/internal/runtime/atomic/atomic_mips64x.s

	MOVW	new+8(FP), R5

	SYNC
	MOVV	R5, R3
	LL	(R2), R1
	SC	R3, (R2)
	BEQ	R3, -3(PC)
	MOVW	R1, ret+16(FP)
	SYNC
	RET

// uint64 Xchg64(ptr *uint64, new uint64)
// Atomically:
//	old := *ptr;
//	*ptr = new;
//	return old;
TEXT ·Xchg64(SB), NOSPLIT, $0-24
	MOVV	ptr+0(FP), R2
	MOVV	new+8(FP), R5

	SYNC
	MOVV	R5, R3
	LLV	(R2), R1
	SCV	R3, (R2)
	BEQ	R3, -3(PC)

Registered: Wed Jun 12 16:32:35 UTC 2024

- Last Modified: Sat May 11 21:29:34 UTC 2024

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github.com/golang/go

src/internal/runtime/atomic/atomic_s390x.s

	MOVD	ptr+0(FP), R4
	MOVW	new+8(FP), R3
	MOVW	(R4), R6
repeat:
	CS	R6, R3, (R4) // if R6==(R4) then (R4)=R3 else R6=(R4)
	BNE	repeat
	MOVW	R6, ret+16(FP)
	RET

// func Xchg64(ptr *uint64, new uint64) uint64
TEXT ·Xchg64(SB), NOSPLIT, $0-24
	MOVD	ptr+0(FP), R4
	MOVD	new+8(FP), R3
	MOVD	(R4), R6
repeat:
	CSG	R6, R3, (R4) // if R6==(R4) then (R4)=R3 else R6=(R4)
	BNE	repeat
	MOVD	R6, ret+16(FP)
	RET

Registered: Wed Jun 12 16:32:35 UTC 2024

- Last Modified: Mon Mar 25 19:53:03 UTC 2024

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github.com/golang/go

src/internal/runtime/atomic/atomic_riscv64.s

// func Xchg(ptr *uint32, new uint32) uint32
TEXT ·Xchg(SB), NOSPLIT, $0-20
	MOV	ptr+0(FP), A0
	MOVW	new+8(FP), A1
	AMOSWAPW A1, (A0), A1
	MOVW	A1, ret+16(FP)
	RET

// func Xchg64(ptr *uint64, new uint64) uint64
TEXT ·Xchg64(SB), NOSPLIT, $0-24
	MOV	ptr+0(FP), A0
	MOV	new+8(FP), A1
	AMOSWAPD A1, (A0), A1
	MOV	A1, ret+16(FP)
	RET

// Atomically:
//      *val += delta;
//      return *val;

Registered: Wed Jun 12 16:32:35 UTC 2024

- Last Modified: Mon Mar 25 19:53:03 UTC 2024

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github.com/golang/go

src/internal/runtime/atomic/atomic_arm64.s

#ifndef GOARM64_LSE
load_store_loop:
	LDAXRW	(R0), R2
	STLXRW	R1, (R0), R3
	CBNZ	R3, load_store_loop
	MOVW	R2, ret+16(FP)
	RET
#endif

// uint64 Xchg64(ptr *uint64, new uint64)
// Atomically:
//	old := *ptr;
//	*ptr = new;
//	return old;
TEXT ·Xchg64(SB), NOSPLIT, $0-24
	MOVD	ptr+0(FP), R0
	MOVD	new+8(FP), R1
#ifndef GOARM64_LSE
	MOVBU	internal∕cpu·ARM64+const_offsetARM64HasATOMICS(SB), R4

Registered: Wed Jun 12 16:32:35 UTC 2024

- Last Modified: Mon Mar 25 19:53:03 UTC 2024

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github.com/golang/go

src/internal/runtime/atomic/atomic_ppc64x.s

	MOVW	new+8(FP), R5
	LWSYNC
	LWAR	(R4), R3
	STWCCC	R5, (R4)
	BNE	-2(PC)
	ISYNC
	MOVW	R3, ret+16(FP)
	RET

// uint64 Xchg64(ptr *uint64, new uint64)
// Atomically:
//	old := *ptr;
//	*ptr = new;
//	return old;
TEXT ·Xchg64(SB), NOSPLIT, $0-24
	MOVD	ptr+0(FP), R4
	MOVD	new+8(FP), R5
	LWSYNC
	LDAR	(R4), R3
	STDCCC	R5, (R4)
	BNE	-2(PC)
	ISYNC
	MOVD	R3, ret+16(FP)

Registered: Wed Jun 12 16:32:35 UTC 2024

- Last Modified: Mon Mar 25 19:53:03 UTC 2024

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github.com/golang/go

src/internal/runtime/atomic/atomic_wasm.go

//go:linkname Loaduintptr
//go:linkname LoadAcquintptr
//go:linkname Xadd
//go:linkname Xaddint32
//go:linkname Xaddint64
//go:linkname Xadd64
//go:linkname Xadduintptr
//go:linkname Xchg
//go:linkname Xchg64
//go:linkname Xchgint32
//go:linkname Xchgint64
//go:linkname Xchguintptr
//go:linkname Cas
//go:linkname Cas64
//go:linkname Casint32
//go:linkname Casint64
//go:linkname Casuintptr
//go:linkname Store

Registered: Wed Jun 12 16:32:35 UTC 2024

- Last Modified: Wed May 15 19:57:43 UTC 2024

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github.com/golang/go

src/internal/runtime/atomic/atomic_mips64x.go

//go:noescape
func Xadd64(ptr *uint64, delta int64) uint64

//go:noescape
func Xadduintptr(ptr *uintptr, delta uintptr) uintptr

//go:noescape
func Xchg(ptr *uint32, new uint32) uint32

//go:noescape
func Xchg64(ptr *uint64, new uint64) uint64

//go:noescape
func Xchguintptr(ptr *uintptr, new uintptr) uintptr

//go:noescape
func Load(ptr *uint32) uint32

//go:noescape
func Load8(ptr *uint8) uint8

Registered: Wed Jun 12 16:32:35 UTC 2024

- Last Modified: Sat May 11 21:29:34 UTC 2024

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github.com/golang/go

src/internal/runtime/atomic/atomic_386.go

//go:noescape
func Xadd64(ptr *uint64, delta int64) uint64

//go:noescape
func Xadduintptr(ptr *uintptr, delta uintptr) uintptr

//go:noescape
func Xadd(ptr *uint32, delta int32) uint32

//go:noescape
func Xchg64(ptr *uint64, new uint64) uint64

//go:noescape
func Xchg(ptr *uint32, new uint32) uint32

//go:noescape
func Xchguintptr(ptr *uintptr, new uintptr) uintptr

//go:noescape
func Load64(ptr *uint64) uint64

Registered: Wed Jun 12 16:32:35 UTC 2024

- Last Modified: Wed May 15 19:57:43 UTC 2024

- 2.2K bytes

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