X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fppc-arch.h;h=515335f7b52e1cb38ac157643e0c78a233c49b7a;hb=c8617f57d0413beb2890e94dabe227cef9c5ddad;hp=be871d8c3e7055ceedf902f177bc1ae621217498;hpb=4023b1bec2412344e5eea4a33cd85dd662149c67;p=sbcl.git

diff --git a/src/runtime/ppc-arch.h b/src/runtime/ppc-arch.h
index be871d8..515335f 100644
--- a/src/runtime/ppc-arch.h
+++ b/src/runtime/ppc-arch.h
@@ -1,21 +1,58 @@
 #ifndef _PPC_ARCH_H
 #define _PPC_ARCH_H
 
-static inline void
+static inline long
 get_spinlock(lispobj *word,long value)
 {
-    *word=value;                /* FIXME for threads */
+#ifdef LISP_FEATURE_SB_THREAD
+    long temp;
+
+    asm volatile("1: lwarx %0,0,%1;"
+                 "   cmpwi %0,0;"
+                 "   bne- 1b;"
+                 "   stwcx. %2,0,%1;"
+                 "   bne- 1b;"
+                 "   isync"
+                 : "=&r" (temp)
+                 : "r" (word), "r" (value)
+                 : "cr0", "memory");
+    return temp;
+#else
+    *word=value;
+    return 0;
+#endif
 }
 
 static inline void
 release_spinlock(lispobj *word)
 {
+#ifdef LISP_FEATURE_SB_THREAD
+    asm volatile ("sync" : : : "memory");
+#endif
     *word=0;
 }
 
+#ifdef LISP_FEATURE_SB_THREAD
+static inline lispobj
+swap_lispobjs(volatile lispobj *dest, lispobj value)
+{
+    lispobj old_value;
+    asm volatile ("1: lwarx %0,0,%1;"
+                  "   stwcx. %2,0,%1;"
+                  "   bne- 1b;"
+                  "   isync"
+         : "=&r" (old_value)
+         : "r" (dest), "r" (value)
+         : "cr0", "memory");
+    return old_value;
+}
+#endif
 
 #define ARCH_HAS_LINK_REGISTER
 
 extern void ppc_flush_icache(os_vm_address_t address, os_vm_size_t length);
 
+os_context_register_t *os_context_ctr_addr(os_context_t *context);
+os_context_register_t *os_context_cr_addr(os_context_t *context);
+
 #endif /* _PPC_ARCH_H */