* src/mm/boehm-gc/autogen.sh: Adapted for inclusion in CACAO repository.

[cacao.git] / src / mm / boehm-gc / libatomic_ops-1.2 / src / atomic_ops / sysdeps / msftc / x86_64.h

diff --git a/src/mm/boehm-gc/libatomic_ops-1.2/src/atomic_ops/sysdeps/msftc/x86_64.h b/src/mm/boehm-gc/libatomic_ops-1.2/src/atomic_ops/sysdeps/msftc/x86_64.h
index 7f0b647269467dfae9e84b69ebb19a6cd93b78b1..ca1a682e1e64eb7a6cbcbb0e2f464b26586e59a6 100644 (file)
--- a/src/mm/boehm-gc/libatomic_ops-1.2/src/atomic_ops/sysdeps/msftc/x86_64.h
+++ b/src/mm/boehm-gc/libatomic_ops-1.2/src/atomic_ops/sysdeps/msftc/x86_64.h
@@ -152,5 +152,35 @@ AO_test_and_set_full(volatile AO_TS_t *addr)
 }
 
 #define AO_HAVE_test_and_set_full
-#endif
+
+FIXME: (__asm not supported)
+NEC LE-IT: Don't have a working Win64 environment here at the moment.
+AO_compare_double_and_swap_double_full needs implementation for Win64
+But there is no _InterlockedCompareExchange128 in the WinAPI, so we
+need basically whats given below.
+Also see gcc/x86_64.h for partial old opteron workaround:
+
+#ifndef AO_CASDOUBLE_MISSING
+
+AO_INLINE int
+AO_compare_double_and_swap_double_full(volatile AO_double_t *addr,
+                                      AO_t old_val1, AO_t old_val2,
+                                      AO_t new_val1, AO_t new_val2)
+{
+       char result;
+       __asm
+       {
+               mov     rdx,QWORD PTR [old_val]
+               mov     rax,QWORD PTR [old_val + 8]
+               mov     rcx,QWORD PTR [new_val]
+               mov     rbx,QWORD PTR [new_val + 8]
+               lock cmpxchg16b [addr]
+               setz result;
+       }
+       return result;
+}
+#endif // AO_CASDOUBLE_MISSING
+#define AO_HAVE_compare_double_and_swap_double_full
+
+#endif /* 0 */