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- TEXT ainc(SB), 1, $0 /* long ainc(long *); */
- 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 /* long adec(long*); */
- 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 casul(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
- /*
- * void mfence(void);
- */
- TEXT mfence(SB),0,$0
- MFENCE
- RET
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