1 // Copyright 2014 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // +build ppc64 ppc64le 6 7 #include "textflag.h" 8 9 // uint32 runtimeatomicload(uint32 volatile* addr) 10 TEXT atomicload(SB),NOSPLIT,$-8-12 11 MOVD addr+0(FP), R3 12 SYNC 13 MOVWZ 0(R3), R3 14 CMPW R3, R3, CR7 15 BC 4, 30, 1(PC) // bne- cr7,0x4 16 ISYNC 17 MOVW R3, ret+8(FP) 18 RET 19 20 // uint64 runtimeatomicload64(uint64 volatile* addr) 21 TEXT atomicload64(SB),NOSPLIT,$-8-16 22 MOVD addr+0(FP), R3 23 SYNC 24 MOVD 0(R3), R3 25 CMP R3, R3, CR7 26 BC 4, 30, 1(PC) // bne- cr7,0x4 27 ISYNC 28 MOVD R3, ret+8(FP) 29 RET 30 31 // void *runtimeatomicloadp(void *volatile *addr) 32 TEXT atomicloadp(SB),NOSPLIT,$-8-16 33 MOVD addr+0(FP), R3 34 SYNC 35 MOVD 0(R3), R3 36 CMP R3, R3, CR7 37 BC 4, 30, 1(PC) // bne- cr7,0x4 38 ISYNC 39 MOVD R3, ret+8(FP) 40 RET 41 42 TEXT publicationBarrier(SB),NOSPLIT,$-8-0 43 // LWSYNC is the "export" barrier recommended by Power ISA 44 // v2.07 book II, appendix B.2.2.2. 45 // LWSYNC is a load/load, load/store, and store/store barrier. 46 WORD $0x7c2004ac // LWSYNC 47 RET 48
