1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/genericopenlibs/cppstdlib/stl/src/sparc_atomic64.s	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,65 @@
     1.4 +        .section        ".text",#alloc,#execinstr
     1.5 +        .align 8
     1.6 +        .skip 16
     1.7 +
     1.8 +!  int _STLP_atomic_exchange (void *pvalue, int value)
     1.9 +!
    1.10 +
    1.11 +        .type   _STLP_atomic_exchange,#function
    1.12 +        .global _STLP_atomic_exchange
    1.13 +        .align  8
    1.14 +
    1.15 +_STLP_atomic_exchange:
    1.16 +1:
    1.17 +  ldx      [%o0], %o2              ! Set the current value
    1.18 +        mov      %o1, %o3                ! Set the new value
    1.19 +        casx     [%o0], %o2, %o3         ! Do the compare and swap
    1.20 +        cmp      %o2, %o3                ! Check whether successful
    1.21 +        bne      1b                  ! Retry upon failure
    1.22 +        membar  #LoadLoad | #LoadStore  ! Ensure the cas finishes before
    1.23 +                                        ! returning
    1.24 +        retl                            ! return
    1.25 +        mov     %o2, %o0                                ! Set the new value
    1.26 +        .size   _STLP_atomic_exchange,(.-_STLP_atomic_exchange)
    1.27 +
    1.28 +
    1.29 +! int _STLP_atomic_increment (void *pvalue)
    1.30 +
    1.31 +        .type   _STLP_atomic_increment,#function
    1.32 +        .global _STLP_atomic_increment
    1.33 +        .align  8
    1.34 +_STLP_atomic_increment:
    1.35 +0:
    1.36 +        ldx      [%o0], %o2              ! set the current
    1.37 +        addx     %o2, 0x1, %o3                   ! Increment and store current
    1.38 +        casx     [%o0], %o2, %o3         ! Do the compare and swap
    1.39 +        cmp     %o3, %o2                ! Check whether successful
    1.40 +        bne     0b
    1.41 +        membar  #LoadLoad | #LoadStore  ! Ensure the cas finishes before
    1.42 +                                        ! returning
    1.43 +        retl                            ! return
    1.44 +        mov    %o1, %o0                                 ! Set the return value
    1.45 +
    1.46 +        .size   _STLP_atomic_increment,(.-_STLP_atomic_increment)
    1.47 +
    1.48 +
    1.49 +!        /* int _STLP_atomic_decrement (void *pvalue) */
    1.50 +        .type   _STLP_atomic_decrement,#function
    1.51 +        .global _STLP_atomic_decrement
    1.52 +        .align  8
    1.53 +
    1.54 +_STLP_atomic_decrement:
    1.55 +0:
    1.56 +        ldx      [%o0], %o2              ! set the current
    1.57 +        subx             %o2, 0x1, %o3                   ! decrement and store current
    1.58 +        casx     [%o0], %o2, %o3         ! Do the compare and swap
    1.59 +        cmp     %o3, %o2                ! Check whether successful
    1.60 +        bne     0b
    1.61 +        membar  #LoadLoad | #LoadStore  ! Ensure the cas finishes before
    1.62 +                                        ! returning
    1.63 +        retl                            ! return
    1.64 +  nop
    1.65 +        .size   _STLP_atomic_decrement,(.-_STLP_atomic_decrement)
    1.66 +
    1.67 +
    1.68 +