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TEXT ainc(SB), 1, $0 /* int ainc(int *); */
ainclp:
MOVL (RARG), AX /* exp */
MOVL AX, BX
INCL BX /* new */
LOCK; CMPXCHGL BX, (RARG)
JNZ ainclp
MOVL BX, AX
RET
TEXT adec(SB), 1, $0 /* int adec(int*); */
adeclp:
MOVL (RARG), AX
MOVL AX, BX
DECL BX
LOCK; CMPXCHGL BX, (RARG)
JNZ adeclp
MOVL BX, AX
RET
/*
* int cas32(u32int *p, u32int ov, u32int nv);
* int cas(uint *p, int ov, int nv);
* int casl(ulong *p, ulong ov, ulong nv);
*/
TEXT cas32(SB), 1, $0
TEXT cas(SB), 1, $0
TEXT casul(SB), 1, $0
TEXT casl(SB), 1, $0 /* back compat */
MOVL exp+8(FP), AX
MOVL new+16(FP), BX
LOCK; CMPXCHGL BX, (RARG)
MOVL $1, AX /* use CMOVLEQ etc. here? */
JNZ _cas32r0
_cas32r1:
RET
_cas32r0:
DECL AX
RET
/*
* int cas64(u64int *p, u64int ov, u64int nv);
* int casp(void **p, void *ov, void *nv);
*/
TEXT cas64(SB), 1, $0
TEXT casp(SB), 1, $0
MOVQ exp+8(FP), AX
MOVQ new+16(FP), BX
LOCK; CMPXCHGQ BX, (RARG)
MOVL $1, AX /* use CMOVLEQ etc. here? */
JNZ _cas64r0
_cas64r1:
RET
_cas64r0:
DECL AX
RET
TEXT fas64(SB), 1, $-4
TEXT fasp(SB), 1, $-4
MOVQ p+8(FP), AX
LOCK; XCHGQ AX, (RARG) /* */
RET
TEXT fas32(SB), 1, $-4
MOVL p+8(FP), AX
LOCK; XCHGL AX, (RARG) /* */
RET
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