‰PNG  IHDRôxÔúsBIT|dˆ pHYsÄÄ•+tEXtSoftwarewww.inkscape.org›î<,àtEXtComment // Copyright 2016 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. //go:build mips || mipsle #include "textflag.h" // bool Cas(int32 *val, int32 old, int32 new) // Atomically: // if(*val == old){ // *val = new; // return 1; // } else // return 0; TEXT ·Cas(SB),NOSPLIT,$0-13 MOVW ptr+0(FP), R1 MOVW old+4(FP), R2 MOVW new+8(FP), R5 SYNC try_cas: MOVW R5, R3 LL (R1), R4 // R4 = *R1 BNE R2, R4, cas_fail SC R3, (R1) // *R1 = R3 BEQ R3, try_cas SYNC MOVB R3, ret+12(FP) RET cas_fail: SYNC MOVB R0, ret+12(FP) RET TEXT ·Store(SB),NOSPLIT,$0-8 MOVW ptr+0(FP), R1 MOVW val+4(FP), R2 SYNC MOVW R2, 0(R1) SYNC RET TEXT ·Store8(SB),NOSPLIT,$0-5 MOVW ptr+0(FP), R1 MOVB val+4(FP), R2 SYNC MOVB R2, 0(R1) SYNC RET TEXT ·Load(SB),NOSPLIT,$0-8 MOVW ptr+0(FP), R1 SYNC MOVW 0(R1), R1 SYNC MOVW R1, ret+4(FP) RET TEXT ·Load8(SB),NOSPLIT,$0-5 MOVW ptr+0(FP), R1 SYNC MOVB 0(R1), R1 SYNC MOVB R1, ret+4(FP) RET // uint32 Xadd(uint32 volatile *val, int32 delta) // Atomically: // *val += delta; // return *val; TEXT ·Xadd(SB),NOSPLIT,$0-12 MOVW ptr+0(FP), R2 MOVW delta+4(FP), R3 SYNC try_xadd: LL (R2), R1 // R1 = *R2 ADDU R1, R3, R4 MOVW R4, R1 SC R4, (R2) // *R2 = R4 BEQ R4, try_xadd SYNC MOVW R1, ret+8(FP) RET // uint32 Xchg(ptr *uint32, new uint32) // Atomically: // old := *ptr; // *ptr = new; // return old; TEXT ·Xchg(SB),NOSPLIT,$0-12 MOVW ptr+0(FP), R2 MOVW new+4(FP), R5 SYNC try_xchg: MOVW R5, R3 LL (R2), R1 // R1 = *R2 SC R3, (R2) // *R2 = R3 BEQ R3, try_xchg SYNC MOVW R1, ret+8(FP) RET TEXT ·Casint32(SB),NOSPLIT,$0-13 JMP ·Cas(SB) TEXT ·Casint64(SB),NOSPLIT,$0-21 JMP ·Cas64(SB) TEXT ·Casuintptr(SB),NOSPLIT,$0-13 JMP ·Cas(SB) TEXT ·CasRel(SB),NOSPLIT,$0-13 JMP ·Cas(SB) TEXT ·Loaduintptr(SB),NOSPLIT,$0-8 JMP ·Load(SB) TEXT ·Loaduint(SB),NOSPLIT,$0-8 JMP ·Load(SB) TEXT ·Loadp(SB),NOSPLIT,$-0-8 JMP ·Load(SB) TEXT ·Storeint32(SB),NOSPLIT,$0-8 JMP ·Store(SB) TEXT ·Storeint64(SB),NOSPLIT,$0-12 JMP ·Store64(SB) TEXT ·Storeuintptr(SB),NOSPLIT,$0-8 JMP ·Store(SB) TEXT ·Xadduintptr(SB),NOSPLIT,$0-12 JMP ·Xadd(SB) TEXT ·Loadint32(SB),NOSPLIT,$0-8 JMP ·Load(SB) TEXT ·Loadint64(SB),NOSPLIT,$0-12 JMP ·Load64(SB) TEXT ·Xaddint32(SB),NOSPLIT,$0-12 JMP ·Xadd(SB) TEXT ·Xaddint64(SB),NOSPLIT,$0-20 JMP ·Xadd64(SB) TEXT ·Casp1(SB),NOSPLIT,$0-13 JMP ·Cas(SB) TEXT ·Xchgint32(SB),NOSPLIT,$0-12 JMP ·Xchg(SB) TEXT ·Xchgint64(SB),NOSPLIT,$0-20 JMP ·Xchg64(SB) TEXT ·Xchguintptr(SB),NOSPLIT,$0-12 JMP ·Xchg(SB) TEXT ·StorepNoWB(SB),NOSPLIT,$0-8 JMP ·Store(SB) TEXT ·StoreRel(SB),NOSPLIT,$0-8 JMP ·Store(SB) TEXT ·StoreReluintptr(SB),NOSPLIT,$0-8 JMP ·Store(SB) // void Or8(byte volatile*, byte); TEXT ·Or8(SB),NOSPLIT,$0-5 MOVW ptr+0(FP), R1 MOVBU val+4(FP), R2 MOVW $~3, R3 // Align ptr down to 4 bytes so we can use 32-bit load/store. AND R1, R3 #ifdef GOARCH_mips // Big endian. ptr = ptr ^ 3 XOR $3, R1 #endif AND $3, R1, R4 // R4 = ((ptr & 3) * 8) SLL $3, R4 SLL R4, R2, R2 // Shift val for aligned ptr. R2 = val << R4 SYNC try_or8: LL (R3), R4 // R4 = *R3 OR R2, R4 SC R4, (R3) // *R3 = R4 BEQ R4, try_or8 SYNC RET // void And8(byte volatile*, byte); TEXT ·And8(SB),NOSPLIT,$0-5 MOVW ptr+0(FP), R1 MOVBU val+4(FP), R2 MOVW $~3, R3 AND R1, R3 #ifdef GOARCH_mips // Big endian. ptr = ptr ^ 3 XOR $3, R1 #endif AND $3, R1, R4 // R4 = ((ptr & 3) * 8) SLL $3, R4 MOVW $0xFF, R5 SLL R4, R2 SLL R4, R5 NOR R0, R5 OR R5, R2 // Shift val for aligned ptr. R2 = val << R4 | ^(0xFF << R4) SYNC try_and8: LL (R3), R4 // R4 = *R3 AND R2, R4 SC R4, (R3) // *R3 = R4 BEQ R4, try_and8 SYNC RET // func Or(addr *uint32, v uint32) TEXT ·Or(SB), NOSPLIT, $0-8 MOVW ptr+0(FP), R1 MOVW val+4(FP), R2 SYNC LL (R1), R3 OR R2, R3 SC R3, (R1) BEQ R3, -4(PC) SYNC RET // func And(addr *uint32, v uint32) TEXT ·And(SB), NOSPLIT, $0-8 MOVW ptr+0(FP), R1 MOVW val+4(FP), R2 SYNC LL (R1), R3 AND R2, R3 SC R3, (R1) BEQ R3, -4(PC) SYNC RET TEXT ·spinLock(SB),NOSPLIT,$0-4 MOVW state+0(FP), R1 MOVW $1, R2 SYNC try_lock: MOVW R2, R3 check_again: LL (R1), R4 BNE R4, check_again SC R3, (R1) BEQ R3, try_lock SYNC RET TEXT ·spinUnlock(SB),NOSPLIT,$0-4 MOVW state+0(FP), R1 SYNC MOVW R0, (R1) SYNC RET