locks.h: Formatting.

	* sysdep/powerpc/locks.h: Formatting.
	(_LARX): Define.
	(_STCX): Define.
	(compare_and_swap): Use _LARX and _STCX.
	(compare_and_swap_release): Likewise.

From-SVN: r55855

libjava/ChangeLog

+2002-07-27  Alan Modra  <amodra@bigpond.net.au>
+
+	* sysdep/powerpc/locks.h: Formatting.
+	(_LARX): Define.
+	(_STCX): Define.
+	(compare_and_swap): Use _LARX and _STCX.
+	(compare_and_swap_release): Likewise.
+
 2002-07-26  Tom Tromey  <tromey@redhat.com>
 
 	* java/net/Authenticator.java: New version from Classpath.

libjava/sysdep/powerpc/locks.h

@@ -11,26 +11,38 @@ details.  */
 #ifndef __SYSDEP_LOCKS_H__
 #define __SYSDEP_LOCKS_H__
 
+#ifdef __powerpc64__
+#define _LARX "ldarx "
+#define _STCX "stdcx. "
+#else
+#define _LARX "lwarx "
+#ifdef __PPC405__
+#define _STCX "sync; stwcx. "
+#else
+#define _STCX "stwcx. "
+#endif
+#endif
+
 typedef size_t obj_addr_t;	/* Integer type big enough for object	*/
 				/* address.				*/
 
 inline static bool
-compare_and_swap(volatile obj_addr_t *addr,
-		  			      obj_addr_t old,
+compare_and_swap (volatile obj_addr_t *addr, obj_addr_t old,
 		  obj_addr_t new_val) 
 {
   int ret;
 
   __asm__ __volatile__ (
-	   "0:    lwarx %0,0,%1 ;"
+	   "0:    " _LARX "%0,0,%1 ;"
 	   "      xor. %0,%3,%0;"
 	   "      bne 1f;"
-	   "      stwcx. %2,0,%1;"
+	   "      " _STCX "%2,0,%1;"
 	   "      bne- 0b;"
 	   "1:    "
-	: "=&r"(ret)
-	: "r"(addr), "r"(new_val), "r"(old)
+	: "=&r" (ret)
+	: "r" (addr), "r" (new_val), "r" (old)
 	: "cr0", "memory");
+
   /* This version of __compare_and_swap is to be used when acquiring
      a lock, so we don't need to worry about whether other memory
      operations have completed, but we do need to be sure that any loads
@@ -40,37 +52,38 @@ compare_and_swap(volatile obj_addr_t *addr,
 }
 
 inline static void
-release_set(volatile obj_addr_t *addr, obj_addr_t new_val)
+release_set (volatile obj_addr_t *addr, obj_addr_t new_val)
 {
   __asm__ __volatile__ ("sync" : : : "memory");
-  *(addr) = new_val;
+  *addr = new_val;
 }
 
 inline static bool
-compare_and_swap_release(volatile obj_addr_t *addr,
-		  				     obj_addr_t old,
+compare_and_swap_release (volatile obj_addr_t *addr, obj_addr_t old,
 			  obj_addr_t new_val)
 {
   int ret;
 
   __asm__ __volatile__ ("sync" : : : "memory");
+
   __asm__ __volatile__ (
-	   "0:    lwarx %0,0,%1 ;"
+	   "0:    " _LARX "%0,0,%1 ;"
 	   "      xor. %0,%3,%0;"
 	   "      bne 1f;"
-	   "      stwcx. %2,0,%1;"
+	   "      " _STCX "%2,0,%1;"
 	   "      bne- 0b;"
 	   "1:    "
-	: "=&r"(ret)
-	: "r"(addr), "r"(new_val), "r"(old)
+	: "=&r" (ret)
+	: "r" (addr), "r" (new_val), "r" (old)
 	: "cr0", "memory");
+
   return ret == 0;
 }
 
 // Ensure that subsequent instructions do not execute on stale
 // data that was loaded from memory before the barrier.
 inline static void
-read_barrier()
+read_barrier ()
 {
   __asm__ __volatile__ ("isync" : : : "memory");
 }
@@ -78,7 +91,7 @@ read_barrier()
 // Ensure that prior stores to memory are completed with respect to other
 // processors.
 inline static void
-write_barrier()
+write_barrier ()
 {
   __asm__ __volatile__ ("sync" : : : "memory");
 }