Add STLport 5.1.4

[polintos/scott/priv.git] / lib / c++ / stlport / sparc_atomic.s

diff --git a/lib/c++/stlport/sparc_atomic.s b/lib/c++/stlport/sparc_atomic.s
new file mode 100644 (file)
index 0000000..67e41d6
--- /dev/null
+++ b/lib/c++/stlport/sparc_atomic.s
@@ -0,0 +1,68 @@
+        .section        ".text",#alloc,#execinstr
+          .align 8
+          .skip 16
+
+
+  /*
+  **  int _STLP_atomic_exchange (void *pvalue, int value)
+  */
+
+          .type   _STLP_atomic_exchange,#function
+          .global _STLP_atomic_exchange
+          .align  8
+
+_STLP_atomic_exchange:
+0:
+          ld      [%o0], %o2              ! Set the current value
+          mov     %o1, %o3                ! Set the new value
+!          swap     [%o0], %o3             ! Do the compare and swap
+          cas     [%o0], %o2, %o3
+          cmp     %o2, %o3                ! Check whether successful
+          bne     0b                      ! Retry upon failure
+          stbar
+          mov     %o2, %o0                ! Set the new value
+          retl                            ! return
+          nop
+          .size   _STLP_atomic_exchange,(.-_STLP_atomic_exchange)
+
+  /* int _STLP_atomic_increment (void *pvalue) */
+
+          .type   _STLP_atomic_increment,#function
+          .global _STLP_atomic_increment
+          .align  8
+_STLP_atomic_increment:
+1:
+          ld      [%o0], %o2              ! set the current
+          add             %o2, 0x1, %o3                   ! Increment and store current
+!          swap     [%o0], %o3         ! Do the compare and swap
+          cas     [%o0], %o2, %o3
+          cmp     %o3, %o2                ! Check whether successful
+          bne     1b                                         ! Retry if we failed.
+          membar  #LoadLoad | #LoadStore  ! Ensure the cas finishes before
+                                          ! returning
+          nop
+          retl                            ! return
+          nop
+
+          .size   _STLP_atomic_increment,(.-_STLP_atomic_increment)
+
+
+  /* int _STLP_atomic_decrement (void *pvalue) */
+          .type   _STLP_atomic_decrement,#function
+          .global _STLP_atomic_decrement
+          .align  8
+
+_STLP_atomic_decrement:
+2:
+          ld      [%o0], %o2              ! set the current
+          sub     %o2, 0x1, %o3                   ! decrement and store current
+!          swap    [%o0], %o3         ! Do the compare and swap
+          cas     [%o0], %o2, %o3
+          cmp     %o3, %o2                ! Check whether successful
+          bne     2b                                         ! Retry if we failed.
+          membar  #LoadLoad | #LoadStore  ! Ensure the cas finishes before
+          nop
+                                          ! returning
+          retl                            ! return
+          nop
+          .size   _STLP_atomic_decrement,(.-_STLP_atomic_decrement)