mirror of
https://github.com/golang/go
synced 2024-11-20 03:04:40 -07:00
45c06b27a4
Replace the confusing game where a frame size of $-8 would suppress the implicit setting up of a stack frame with a nice explicit flag. The code to set up the function prologue is still a little confusing but better than it was. Change-Id: I1d49278ff42c6bc734ebfb079998b32bc53f8d9a Reviewed-on: https://go-review.googlesource.com/15670 Reviewed-by: Minux Ma <minux@golang.org>
48 lines
1.1 KiB
ArmAsm
48 lines
1.1 KiB
ArmAsm
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build ppc64 ppc64le
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#include "textflag.h"
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// uint32 runtime·atomicload(uint32 volatile* addr)
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TEXT ·atomicload(SB),NOSPLIT|NOFRAME,$0-12
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MOVD addr+0(FP), R3
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SYNC
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MOVWZ 0(R3), R3
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CMPW R3, R3, CR7
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BC 4, 30, 1(PC) // bne- cr7,0x4
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ISYNC
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MOVW R3, ret+8(FP)
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RET
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// uint64 runtime·atomicload64(uint64 volatile* addr)
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TEXT ·atomicload64(SB),NOSPLIT|NOFRAME,$0-16
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MOVD addr+0(FP), R3
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SYNC
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MOVD 0(R3), R3
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CMP R3, R3, CR7
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BC 4, 30, 1(PC) // bne- cr7,0x4
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ISYNC
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MOVD R3, ret+8(FP)
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RET
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// void *runtime·atomicloadp(void *volatile *addr)
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TEXT ·atomicloadp(SB),NOSPLIT|NOFRAME,$0-16
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MOVD addr+0(FP), R3
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SYNC
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MOVD 0(R3), R3
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CMP R3, R3, CR7
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BC 4, 30, 1(PC) // bne- cr7,0x4
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ISYNC
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MOVD R3, ret+8(FP)
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RET
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TEXT ·publicationBarrier(SB),NOSPLIT|NOFRAME,$0-0
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// LWSYNC is the "export" barrier recommended by Power ISA
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// v2.07 book II, appendix B.2.2.2.
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// LWSYNC is a load/load, load/store, and store/store barrier.
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WORD $0x7c2004ac // LWSYNC
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RET
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