1 #define CLREX WORD $0xf57ff01f
2 #define LDREX(a,r) WORD $(0xe<<28|0x01900f9f | (a)<<16 | (r)<<12)
3 /* `The order of operands is from left to right in dataflow order' - asm man */
4 #define STREX(v,a,r) WORD $(0xe<<28|0x01800f90 | (a)<<16 | (r)<<12 | (v)<<0)
7 * int cas(ulong *p, ulong ov, ulong nv);
10 TEXT cas+0(SB),0,$0 /* r0 holds p */
11 TEXT casp+0(SB),0,$0 /* r0 holds p */
15 LDREX(0,3) /* LDREX 0(R0),R3 */
18 STREX(2,0,4) /* STREX 0(R0),R2,R4 */
28 TEXT _xinc(SB), $0 /* void _xinc(long *); */
29 TEXT ainc(SB), $0 /* long ainc(long *); */
31 LDREX(0,3) /* LDREX 0(R0),R3 */
33 STREX(3,0,4) /* STREX 0(R0),R3,R4 */
39 TEXT _xdec(SB), $0 /* long _xdec(long *); */
40 TEXT adec(SB), $0 /* long adec(long *); */
42 LDREX(0,3) /* LDREX 0(R0),R3 */
44 STREX(3,0,4) /* STREX 0(R0),R3,R4 */
50 TEXT loadlinked(SB), $0 /* long loadlinked(long *); */
51 LDREX(0,0) /* LDREX 0(R0),R0 */
54 TEXT storecond(SB), $0 /* int storecond(long *, long); */
56 STREX(3,0,0) /* STREX 0(R0),R3,R0 */