1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/build/stlport/src/sparc_atomic.s Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,68 @@
1.4 + .section ".text",#alloc,#execinstr
1.5 + .align 8
1.6 + .skip 16
1.7 +
1.8 +
1.9 + /*
1.10 + ** int _STLP_atomic_exchange (void *pvalue, int value)
1.11 + */
1.12 +
1.13 + .type _STLP_atomic_exchange,#function
1.14 + .global _STLP_atomic_exchange
1.15 + .align 8
1.16 +
1.17 +_STLP_atomic_exchange:
1.18 +0:
1.19 + ld [%o0], %o2 ! Set the current value
1.20 + mov %o1, %o3 ! Set the new value
1.21 +! swap [%o0], %o3 ! Do the compare and swap
1.22 + cas [%o0], %o2, %o3
1.23 + cmp %o2, %o3 ! Check whether successful
1.24 + bne 0b ! Retry upon failure
1.25 + stbar
1.26 + mov %o2, %o0 ! Set the new value
1.27 + retl ! return
1.28 + nop
1.29 + .size _STLP_atomic_exchange,(.-_STLP_atomic_exchange)
1.30 +
1.31 + /* int _STLP_atomic_increment (void *pvalue) */
1.32 +
1.33 + .type _STLP_atomic_increment,#function
1.34 + .global _STLP_atomic_increment
1.35 + .align 8
1.36 +_STLP_atomic_increment:
1.37 +1:
1.38 + ld [%o0], %o2 ! set the current
1.39 + add %o2, 0x1, %o3 ! Increment and store current
1.40 +! swap [%o0], %o3 ! Do the compare and swap
1.41 + cas [%o0], %o2, %o3
1.42 + cmp %o3, %o2 ! Check whether successful
1.43 + bne 1b ! Retry if we failed.
1.44 + membar #LoadLoad | #LoadStore ! Ensure the cas finishes before
1.45 + ! returning
1.46 + nop
1.47 + retl ! return
1.48 + nop
1.49 +
1.50 + .size _STLP_atomic_increment,(.-_STLP_atomic_increment)
1.51 +
1.52 +
1.53 + /* int _STLP_atomic_decrement (void *pvalue) */
1.54 + .type _STLP_atomic_decrement,#function
1.55 + .global _STLP_atomic_decrement
1.56 + .align 8
1.57 +
1.58 +_STLP_atomic_decrement:
1.59 +2:
1.60 + ld [%o0], %o2 ! set the current
1.61 + sub %o2, 0x1, %o3 ! decrement and store current
1.62 +! swap [%o0], %o3 ! Do the compare and swap
1.63 + cas [%o0], %o2, %o3
1.64 + cmp %o3, %o2 ! Check whether successful
1.65 + bne 2b ! Retry if we failed.
1.66 + membar #LoadLoad | #LoadStore ! Ensure the cas finishes before
1.67 + nop
1.68 + ! returning
1.69 + retl ! return
1.70 + nop
1.71 + .size _STLP_atomic_decrement,(.-_STLP_atomic_decrement)
