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comparison: build/stlport/src/sparc_atomic.s
build/stlport/src/sparc_atomic.s
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
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replaced
| -1:000000000000 | 0:04b236a0a2a1 |
|---|---|
| 1 .section ".text",#alloc,#execinstr | |
| 2 .align 8 | |
| 3 .skip 16 | |
| 4 | |
| 5 | |
| 6 /* | |
| 7 ** int _STLP_atomic_exchange (void *pvalue, int value) | |
| 8 */ | |
| 9 | |
| 10 .type _STLP_atomic_exchange,#function | |
| 11 .global _STLP_atomic_exchange | |
| 12 .align 8 | |
| 13 | |
| 14 _STLP_atomic_exchange: | |
| 15 0: | |
| 16 ld [%o0], %o2 ! Set the current value | |
| 17 mov %o1, %o3 ! Set the new value | |
| 18 ! swap [%o0], %o3 ! Do the compare and swap | |
| 19 cas [%o0], %o2, %o3 | |
| 20 cmp %o2, %o3 ! Check whether successful | |
| 21 bne 0b ! Retry upon failure | |
| 22 stbar | |
| 23 mov %o2, %o0 ! Set the new value | |
| 24 retl ! return | |
| 25 nop | |
| 26 .size _STLP_atomic_exchange,(.-_STLP_atomic_exchange) | |
| 27 | |
| 28 /* int _STLP_atomic_increment (void *pvalue) */ | |
| 29 | |
| 30 .type _STLP_atomic_increment,#function | |
| 31 .global _STLP_atomic_increment | |
| 32 .align 8 | |
| 33 _STLP_atomic_increment: | |
| 34 1: | |
| 35 ld [%o0], %o2 ! set the current | |
| 36 add %o2, 0x1, %o3 ! Increment and store current | |
| 37 ! swap [%o0], %o3 ! Do the compare and swap | |
| 38 cas [%o0], %o2, %o3 | |
| 39 cmp %o3, %o2 ! Check whether successful | |
| 40 bne 1b ! Retry if we failed. | |
| 41 membar #LoadLoad | #LoadStore ! Ensure the cas finishes before | |
| 42 ! returning | |
| 43 nop | |
| 44 retl ! return | |
| 45 nop | |
| 46 | |
| 47 .size _STLP_atomic_increment,(.-_STLP_atomic_increment) | |
| 48 | |
| 49 | |
| 50 /* int _STLP_atomic_decrement (void *pvalue) */ | |
| 51 .type _STLP_atomic_decrement,#function | |
| 52 .global _STLP_atomic_decrement | |
| 53 .align 8 | |
| 54 | |
| 55 _STLP_atomic_decrement: | |
| 56 2: | |
| 57 ld [%o0], %o2 ! set the current | |
| 58 sub %o2, 0x1, %o3 ! decrement and store current | |
| 59 ! swap [%o0], %o3 ! Do the compare and swap | |
| 60 cas [%o0], %o2, %o3 | |
| 61 cmp %o3, %o2 ! Check whether successful | |
| 62 bne 2b ! Retry if we failed. | |
| 63 membar #LoadLoad | #LoadStore ! Ensure the cas finishes before | |
| 64 nop | |
| 65 ! returning | |
| 66 retl ! return | |
| 67 nop | |
| 68 .size _STLP_atomic_decrement,(.-_STLP_atomic_decrement) |
