/home/ntakagi/work/STLport-5.1.5/src/sparc_atomic64.s
Go to the documentation of this file.00001 .section ".text",#alloc,#execinstr 00002 .align 8 00003 .skip 16 00004 00005 ! int _STLP_atomic_exchange (void *pvalue, int value) 00006 ! 00007 00008 .type _STLP_atomic_exchange,#function 00009 .global _STLP_atomic_exchange 00010 .align 8 00011 00012 _STLP_atomic_exchange: 00013 1: 00014 ldx [%o0], %o2 ! Set the current value 00015 mov %o1, %o3 ! Set the new value 00016 casx [%o0], %o2, %o3 ! Do the compare and swap 00017 cmp %o2, %o3 ! Check whether successful 00018 bne 1b ! Retry upon failure 00019 membar #LoadLoad | #LoadStore ! Ensure the cas finishes before 00020 ! returning 00021 retl ! return 00022 mov %o2, %o0 ! Set the new value 00023 .size _STLP_atomic_exchange,(.-_STLP_atomic_exchange) 00024 00025 00026 ! int _STLP_atomic_increment (void *pvalue) 00027 00028 .type _STLP_atomic_increment,#function 00029 .global _STLP_atomic_increment 00030 .align 8 00031 _STLP_atomic_increment: 00032 0: 00033 ldx [%o0], %o2 ! set the current 00034 addx %o2, 0x1, %o3 ! Increment and store current 00035 casx [%o0], %o2, %o3 ! Do the compare and swap 00036 cmp %o3, %o2 ! Check whether successful 00037 bne 0b 00038 membar #LoadLoad | #LoadStore ! Ensure the cas finishes before 00039 ! returning 00040 retl ! return 00041 mov %o1, %o0 ! Set the return value 00042 00043 .size _STLP_atomic_increment,(.-_STLP_atomic_increment) 00044 00045 00046 ! /* int _STLP_atomic_decrement (void *pvalue) */ 00047 .type _STLP_atomic_decrement,#function 00048 .global _STLP_atomic_decrement 00049 .align 8 00050 00051 _STLP_atomic_decrement: 00052 0: 00053 ldx [%o0], %o2 ! set the current 00054 subx %o2, 0x1, %o3 ! decrement and store current 00055 casx [%o0], %o2, %o3 ! Do the compare and swap 00056 cmp %o3, %o2 ! Check whether successful 00057 bne 0b 00058 membar #LoadLoad | #LoadStore ! Ensure the cas finishes before 00059 ! returning 00060 retl ! return 00061 nop 00062 .size _STLP_atomic_decrement,(.-_STLP_atomic_decrement) 00063 00064 00065
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