File size: 7,908 Bytes
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// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build mips64 || mips64le
#include "textflag.h"
#define SYNC WORD $0xf
// func cas(ptr *uint32, old, new uint32) bool
// Atomically:
// if *ptr == old {
// *ptr = new
// return true
// } else {
// return false
// }
TEXT 路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)
// func Cas64(ptr *uint64, old, new uint64) bool
// Atomically:
// if *ptr == old {
// *ptr = new
// return true
// } else {
// return false
// }
TEXT 路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 路Casint32(SB), NOSPLIT, $0-17
JMP 路Cas(SB)
TEXT 路Casint64(SB), NOSPLIT, $0-25
JMP 路Cas64(SB)
TEXT 路Casuintptr(SB), NOSPLIT, $0-25
JMP 路Cas64(SB)
TEXT 路CasRel(SB), NOSPLIT, $0-17
JMP 路Cas(SB)
TEXT 路Loaduintptr(SB), NOSPLIT|NOFRAME, $0-16
JMP 路Load64(SB)
TEXT 路Loaduint(SB), NOSPLIT|NOFRAME, $0-16
JMP 路Load64(SB)
TEXT 路Storeint32(SB), NOSPLIT, $0-12
JMP 路Store(SB)
TEXT 路Storeint64(SB), NOSPLIT, $0-16
JMP 路Store64(SB)
TEXT 路Storeuintptr(SB), NOSPLIT, $0-16
JMP 路Store64(SB)
TEXT 路Xadduintptr(SB), NOSPLIT, $0-24
JMP 路Xadd64(SB)
TEXT 路Loadint32(SB), NOSPLIT, $0-12
JMP 路Load(SB)
TEXT 路Loadint64(SB), NOSPLIT, $0-16
JMP 路Load64(SB)
TEXT 路Xaddint32(SB), NOSPLIT, $0-20
JMP 路Xadd(SB)
TEXT 路Xaddint64(SB), NOSPLIT, $0-24
JMP 路Xadd64(SB)
// func Casp1(ptr *unsafe.Pointer, old, new unsafe.Pointer) bool
// Atomically:
// if *ptr == old {
// *ptr = new
// return true
// } else {
// return false
// }
TEXT 路Casp1(SB), NOSPLIT, $0-25
JMP 路Cas64(SB)
// uint32 xadd(uint32 volatile *ptr, int32 delta)
// Atomically:
// *val += delta;
// return *val;
TEXT 路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
// uint64 Xadd64(uint64 volatile *ptr, int64 delta)
// Atomically:
// *val += delta;
// return *val;
TEXT 路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
// uint8 Xchg(ptr *uint8, new uint8)
// Atomically:
// old := *ptr;
// *ptr = new;
// return old;
TEXT 路Xchg8(SB), NOSPLIT, $0-17
MOVV ptr+0(FP), R2
MOVBU new+8(FP), R5
#ifdef GOARCH_mips64
// Big endian. ptr = ptr ^ 3
XOR $3, R2
#endif
// R4 = ((ptr & 3) * 8)
AND $3, R2, R4
SLLV $3, R4
// Shift val for aligned ptr. R7 = (0xFF << R4) ^ (-1)
MOVV $0xFF, R7
SLLV R4, R7
XOR $-1, R7
AND $~3, R2
SLLV R4, R5
SYNC
LL (R2), R9
AND R7, R9, R8
OR R5, R8
SC R8, (R2)
BEQ R8, -5(PC)
SYNC
SRLV R4, R9
MOVBU R9, ret+16(FP)
RET
// uint32 Xchg(ptr *uint32, new uint32)
// Atomically:
// old := *ptr;
// *ptr = new;
// return old;
TEXT 路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
// uint64 Xchg64(ptr *uint64, new uint64)
// Atomically:
// old := *ptr;
// *ptr = new;
// return old;
TEXT 路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 路Xchgint32(SB), NOSPLIT, $0-20
JMP 路Xchg(SB)
TEXT 路Xchgint64(SB), NOSPLIT, $0-24
JMP 路Xchg64(SB)
TEXT 路Xchguintptr(SB), NOSPLIT, $0-24
JMP 路Xchg64(SB)
TEXT 路StorepNoWB(SB), NOSPLIT, $0-16
JMP 路Store64(SB)
TEXT 路StoreRel(SB), NOSPLIT, $0-12
JMP 路Store(SB)
TEXT 路StoreRel64(SB), NOSPLIT, $0-16
JMP 路Store64(SB)
TEXT 路StoreReluintptr(SB), NOSPLIT, $0-16
JMP 路Store64(SB)
TEXT 路Store(SB), NOSPLIT, $0-12
MOVV ptr+0(FP), R1
MOVW val+8(FP), R2
SYNC
MOVW R2, 0(R1)
SYNC
RET
TEXT 路Store8(SB), NOSPLIT, $0-9
MOVV ptr+0(FP), R1
MOVB val+8(FP), R2
SYNC
MOVB R2, 0(R1)
SYNC
RET
TEXT 路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 路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 路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
// func Or(addr *uint32, v uint32)
TEXT 路Or(SB), NOSPLIT, $0-12
MOVV ptr+0(FP), R1
MOVW val+8(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 路And(SB), NOSPLIT, $0-12
MOVV ptr+0(FP), R1
MOVW val+8(FP), R2
SYNC
LL (R1), R3
AND R2, R3
SC R3, (R1)
BEQ R3, -4(PC)
SYNC
RET
// func Or32(addr *uint32, v uint32) old uint32
TEXT 路Or32(SB), NOSPLIT, $0-20
MOVV ptr+0(FP), R1
MOVW val+8(FP), R2
SYNC
LL (R1), R3
OR R2, R3, R4
SC R4, (R1)
BEQ R4, -3(PC)
SYNC
MOVW R3, ret+16(FP)
RET
// func And32(addr *uint32, v uint32) old uint32
TEXT 路And32(SB), NOSPLIT, $0-20
MOVV ptr+0(FP), R1
MOVW val+8(FP), R2
SYNC
LL (R1), R3
AND R2, R3, R4
SC R4, (R1)
BEQ R4, -3(PC)
SYNC
MOVW R3, ret+16(FP)
RET
// func Or64(addr *uint64, v uint64) old uint64
TEXT 路Or64(SB), NOSPLIT, $0-24
MOVV ptr+0(FP), R1
MOVV val+8(FP), R2
SYNC
LLV (R1), R3
OR R2, R3, R4
SCV R4, (R1)
BEQ R4, -3(PC)
SYNC
MOVV R3, ret+16(FP)
RET
// func And64(addr *uint64, v uint64) old uint64
TEXT 路And64(SB), NOSPLIT, $0-24
MOVV ptr+0(FP), R1
MOVV val+8(FP), R2
SYNC
LLV (R1), R3
AND R2, R3, R4
SCV R4, (R1)
BEQ R4, -3(PC)
SYNC
MOVV R3, ret+16(FP)
RET
// func Anduintptr(addr *uintptr, v uintptr) old uintptr
TEXT 路Anduintptr(SB), NOSPLIT, $0-24
JMP 路And64(SB)
// func Oruintptr(addr *uintptr, v uintptr) old uintptr
TEXT 路Oruintptr(SB), NOSPLIT, $0-24
JMP 路Or64(SB)
// uint32 路Load(uint32 volatile* ptr)
TEXT 路Load(SB),NOSPLIT|NOFRAME,$0-12
MOVV ptr+0(FP), R1
SYNC
MOVWU 0(R1), R1
SYNC
MOVW R1, ret+8(FP)
RET
// uint8 路Load8(uint8 volatile* ptr)
TEXT 路Load8(SB),NOSPLIT|NOFRAME,$0-9
MOVV ptr+0(FP), R1
SYNC
MOVBU 0(R1), R1
SYNC
MOVB R1, ret+8(FP)
RET
// uint64 路Load64(uint64 volatile* ptr)
TEXT 路Load64(SB),NOSPLIT|NOFRAME,$0-16
MOVV ptr+0(FP), R1
SYNC
MOVV 0(R1), R1
SYNC
MOVV R1, ret+8(FP)
RET
// void *路Loadp(void *volatile *ptr)
TEXT 路Loadp(SB),NOSPLIT|NOFRAME,$0-16
MOVV ptr+0(FP), R1
SYNC
MOVV 0(R1), R1
SYNC
MOVV R1, ret+8(FP)
RET
// uint32 路LoadAcq(uint32 volatile* ptr)
TEXT 路LoadAcq(SB),NOSPLIT|NOFRAME,$0-12
JMP atomic路Load(SB)
// uint64 路LoadAcq64(uint64 volatile* ptr)
TEXT 路LoadAcq64(SB),NOSPLIT|NOFRAME,$0-16
JMP atomic路Load64(SB)
// uintptr 路LoadAcquintptr(uintptr volatile* ptr)
TEXT 路LoadAcquintptr(SB),NOSPLIT|NOFRAME,$0-16
JMP atomic路Load64(SB)
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