| // 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. |
| |
| // +build mips mipsle |
| |
| #include "textflag.h" |
| |
| 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: |
| 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 ·Load(SB),NOSPLIT,$0-8 |
| MOVW ptr+0(FP), R1 |
| SYNC |
| MOVW 0(R1), R1 |
| SYNC |
| MOVW R1, ret+4(FP) |
| RET |
| |
| 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 |
| |
| 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 ·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 ·Storeuintptr(SB),NOSPLIT,$0-8 |
| JMP ·Store(SB) |
| |
| TEXT ·Xadduintptr(SB),NOSPLIT,$0-12 |
| JMP ·Xadd(SB) |
| |
| TEXT ·Loadint64(SB),NOSPLIT,$0-12 |
| JMP ·Load64(SB) |
| |
| TEXT ·Xaddint64(SB),NOSPLIT,$0-20 |
| JMP ·Xadd64(SB) |
| |
| TEXT ·Casp1(SB),NOSPLIT,$0-13 |
| JMP ·Cas(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) |
| |
| // 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 |
