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// Copyright 2015 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 mips64 mips64le
#include "textflag.h"
// bool cas(uint32 *ptr, uint32 old, uint32 new)
// Atomically:
// if(*val == old){
// *val = new;
// return 1;
// } else
// return 0;
TEXT ·Cas(SB), NOSPLIT, $0-17
MOVV ptr+0(FP), R1
MOVW old+8(FP), R2
MOVW new+12(FP), R5
SYNC
cas_again:
MOVV R5, R3
LL (R1), R4
BNE R2, R4, cas_fail
SC R3, (R1)
BEQ R3, cas_again
MOVV $1, R1
MOVB R1, ret+16(FP)
SYNC
RET
cas_fail:
MOVV $0, R1
JMP -4(PC)
// bool cas64(uint64 *ptr, uint64 old, uint64 new)
// Atomically:
// if(*val == *old){
// *val = new;
// return 1;
// } else {
// return 0;
// }
TEXT ·Cas64(SB), NOSPLIT, $0-25
MOVV ptr+0(FP), R1
MOVV old+8(FP), R2
MOVV new+16(FP), R5
SYNC
cas64_again:
MOVV R5, R3
LLV (R1), R4
BNE R2, R4, cas64_fail
SCV R3, (R1)
BEQ R3, cas64_again
MOVV $1, R1
MOVB R1, ret+24(FP)
SYNC
RET
cas64_fail:
MOVV $0, R1
JMP -4(PC)
TEXT ·Casuintptr(SB), NOSPLIT, $0-25
JMP ·Cas64(SB)
TEXT ·CasRel(SB), NOSPLIT, $0-17
JMP ·Cas(SB)
TEXT ·Loaduintptr(SB), NOSPLIT|NOFRAME, $0-16
JMP ·Load64(SB)
TEXT ·Loaduint(SB), NOSPLIT|NOFRAME, $0-16
JMP ·Load64(SB)
TEXT ·Storeuintptr(SB), NOSPLIT, $0-16
JMP ·Store64(SB)
TEXT ·Xadduintptr(SB), NOSPLIT, $0-24
JMP ·Xadd64(SB)
TEXT ·Loadint64(SB), NOSPLIT, $0-16
JMP ·Load64(SB)
TEXT ·Xaddint64(SB), NOSPLIT, $0-24
JMP ·Xadd64(SB)
// bool casp(void **val, void *old, void *new)
// Atomically:
// if(*val == old){
// *val = new;
// return 1;
// } else
// return 0;
TEXT ·Casp1(SB), NOSPLIT, $0-25
JMP runtime∕internal∕atomic·Cas64(SB)
// uint32 xadd(uint32 volatile *ptr, int32 delta)
// Atomically:
// *val += delta;
// return *val;
TEXT ·Xadd(SB), NOSPLIT, $0-20
MOVV ptr+0(FP), R2
MOVW delta+8(FP), R3
SYNC
LL (R2), R1
ADDU R1, R3, R4
MOVV R4, R1
SC R4, (R2)
BEQ R4, -4(PC)
MOVW R1, ret+16(FP)
SYNC
RET
TEXT ·Xadd64(SB), NOSPLIT, $0-24
MOVV ptr+0(FP), R2
MOVV delta+8(FP), R3
SYNC
LLV (R2), R1
ADDVU R1, R3, R4
MOVV R4, R1
SCV R4, (R2)
BEQ R4, -4(PC)
MOVV R1, ret+16(FP)
SYNC
RET
TEXT ·Xchg(SB), NOSPLIT, $0-20
MOVV ptr+0(FP), R2
MOVW new+8(FP), R5
SYNC
MOVV R5, R3
LL (R2), R1
SC R3, (R2)
BEQ R3, -3(PC)
MOVW R1, ret+16(FP)
SYNC
RET
TEXT ·Xchg64(SB), NOSPLIT, $0-24
MOVV ptr+0(FP), R2
MOVV new+8(FP), R5
SYNC
MOVV R5, R3
LLV (R2), R1
SCV R3, (R2)
BEQ R3, -3(PC)
MOVV R1, ret+16(FP)
SYNC
RET
TEXT ·Xchguintptr(SB), NOSPLIT, $0-24
JMP ·Xchg64(SB)
TEXT ·StorepNoWB(SB), NOSPLIT, $0-16
JMP ·Store64(SB)
TEXT ·StoreRel(SB), NOSPLIT, $0-12
JMP ·Store(SB)
TEXT ·Store(SB), NOSPLIT, $0-12
MOVV ptr+0(FP), R1
MOVW val+8(FP), R2
SYNC
MOVW R2, 0(R1)
SYNC
RET
TEXT ·Store8(SB), NOSPLIT, $0-9
MOVV ptr+0(FP), R1
MOVB val+8(FP), R2
SYNC
MOVB R2, 0(R1)
SYNC
RET
TEXT ·Store64(SB), NOSPLIT, $0-16
MOVV ptr+0(FP), R1
MOVV val+8(FP), R2
SYNC
MOVV R2, 0(R1)
SYNC
RET
// void Or8(byte volatile*, byte);
TEXT ·Or8(SB), NOSPLIT, $0-9
MOVV ptr+0(FP), R1
MOVBU val+8(FP), R2
// Align ptr down to 4 bytes so we can use 32-bit load/store.
MOVV $~3, R3
AND R1, R3
// Compute val shift.
#ifdef GOARCH_mips64
// Big endian. ptr = ptr ^ 3
XOR $3, R1
#endif
// R4 = ((ptr & 3) * 8)
AND $3, R1, R4
SLLV $3, R4
// Shift val for aligned ptr. R2 = val << R4
SLLV R4, R2
SYNC
LL (R3), R4
OR R2, R4
SC R4, (R3)
BEQ R4, -4(PC)
SYNC
RET
// void And8(byte volatile*, byte);
TEXT ·And8(SB), NOSPLIT, $0-9
MOVV ptr+0(FP), R1
MOVBU val+8(FP), R2
// Align ptr down to 4 bytes so we can use 32-bit load/store.
MOVV $~3, R3
AND R1, R3
// Compute val shift.
#ifdef GOARCH_mips64
// Big endian. ptr = ptr ^ 3
XOR $3, R1
#endif
// R4 = ((ptr & 3) * 8)
AND $3, R1, R4
SLLV $3, R4
// Shift val for aligned ptr. R2 = val << R4 | ^(0xFF << R4)
MOVV $0xFF, R5
SLLV R4, R2
SLLV R4, R5
NOR R0, R5
OR R5, R2
SYNC
LL (R3), R4
AND R2, R4
SC R4, (R3)
BEQ R4, -4(PC)
SYNC
RET
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