src/pkg/sync/atomic/asm_freebsd

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// Copyright 2012 The Go Authors.  All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "../../../cmd/ld/textflag.h"

// FreeBSD/ARM atomic operations.
// TODO(minux): this only supports ARMv6K or higher.

TEXT ·CompareAndSwapInt32(SB),NOSPLIT,$0
        B ·CompareAndSwapUint32(SB)

TEXT ·CompareAndSwapUint32(SB),NOSPLIT,$0
        B ·armCompareAndSwapUint32(SB)

TEXT ·CompareAndSwapUintptr(SB),NOSPLIT,$0
        B ·CompareAndSwapUint32(SB)

TEXT ·CompareAndSwapPointer(SB),NOSPLIT,$0
        B ·CompareAndSwapUint32(SB)

TEXT ·AddInt32(SB),NOSPLIT,$0
        B ·AddUint32(SB)

TEXT ·AddUint32(SB),NOSPLIT,$0
        B ·armAddUint32(SB)

TEXT ·AddUintptr(SB),NOSPLIT,$0
        B ·AddUint32(SB)

TEXT ·SwapInt32(SB),NOSPLIT,$0
        B ·SwapUint32(SB)

TEXT ·SwapUint32(SB),NOSPLIT,$0
        B ·armSwapUint32(SB)

TEXT ·SwapUintptr(SB),NOSPLIT,$0
        B ·SwapUint32(SB)

TEXT ·SwapPointer(SB),NOSPLIT,$0
        B ·SwapUint32(SB)

TEXT ·CompareAndSwapInt64(SB),NOSPLIT,$0
        B ·CompareAndSwapUint64(SB)

TEXT ·CompareAndSwapUint64(SB),NOSPLIT,$-4
        B ·armCompareAndSwapUint64(SB)

TEXT ·AddInt64(SB),NOSPLIT,$0
        B ·addUint64(SB)

TEXT ·AddUint64(SB),NOSPLIT,$0
        B ·addUint64(SB)

TEXT ·SwapInt64(SB),NOSPLIT,$0
        B ·swapUint64(SB)

TEXT ·SwapUint64(SB),NOSPLIT,$0
        B ·swapUint64(SB)

TEXT ·LoadInt32(SB),NOSPLIT,$0
        B ·LoadUint32(SB)

TEXT ·LoadUint32(SB),NOSPLIT,$0-8
        MOVW addr+0(FP), R1
load32loop:
        LDREX (R1), R2          // loads R2
        STREX R2, (R1), R0      // stores R2
        CMP $0, R0
        BNE load32loop
        MOVW R2, val+4(FP)
        RET

TEXT ·LoadInt64(SB),NOSPLIT,$0
        B ·loadUint64(SB)

TEXT ·LoadUint64(SB),NOSPLIT,$0
        B ·loadUint64(SB)

TEXT ·LoadUintptr(SB),NOSPLIT,$0
        B ·LoadUint32(SB)

TEXT ·LoadPointer(SB),NOSPLIT,$0
        B ·LoadUint32(SB)

TEXT ·StoreInt32(SB),NOSPLIT,$0
        B ·StoreUint32(SB)

TEXT ·StoreUint32(SB),NOSPLIT,$0-8
        MOVW addr+0(FP), R1
        MOVW val+4(FP), R2
storeloop:
        LDREX (R1), R4          // loads R4
        STREX R2, (R1), R0      // stores R2
        CMP $0, R0
        BNE storeloop
        RET

TEXT ·StoreInt64(SB),NOSPLIT,$0
        B ·storeUint64(SB)

TEXT ·StoreUint64(SB),NOSPLIT,$0
        B ·storeUint64(SB)

TEXT ·StoreUintptr(SB),NOSPLIT,$0
        B ·StoreUint32(SB)

TEXT ·StorePointer(SB),NOSPLIT,$0
        B ·StoreUint32(SB)
/* [<][>][^][v][top][bottom][index][help] */
root/src/pkg/sync/atomic/asm_freebsd_arm.s
