mkLinux patches from Tatsuo Ishii.

2 files changed, 69 insertions, 2 deletions

diff --git a/src/backend/storage/ipc/s_lock.c b/src/backend/storage/ipc/s_lock.c
index 449b34d12c7..de9b8689f09 100644
--- a/src/backend/storage/ipc/s_lock.c
+++ b/src/backend/storage/ipc/s_lock.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/backend/storage/ipc/Attic/s_lock.c,v 1.14 1997/06/06 01:37:14 scrappy Exp $
+ *    $Header: /cvsroot/pgsql/src/backend/storage/ipc/Attic/s_lock.c,v 1.15 1997/07/29 14:07:48 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -521,5 +521,45 @@ S_INIT_LOCK(slock_t *lock)
 
 #endif /* NEED_NS32K_TAS_ASM */
 
+#if defined(linux) && defined(PPC)
+
+static int tas_dummy()
+{
+	__asm__("
+tas:			/* r3 points to the location of p */
+	lwarx	5,0,3	/* r5 = *p */
+	cmpwi	5,0	/* r5 == 0 ? */
+	bne	fail	/* if not 0, jump to fail */
+	addi	5,5,1	/* set 1 to r5 */
+        stwcx.  5,0,3	/* try update p atomically */
+        beq	success	/* jump if scceed */
+fail:	li	3,1	/* set 1 to r3 */
+	blr
+success:
+	li 3,0		/* set 0 to r3 */
+        blr
+	");
+}
+ 
+void
+S_LOCK(slock_t *lock)
+{
+    while (tas(lock))
+	;
+}
+
+void
+S_UNLOCK(slock_t *lock)
+{
+    *lock = 0;
+}
+
+void
+S_INIT_LOCK(slock_t *lock)
+{
+    S_UNLOCK(lock);
+}
+
+#endif /* defined(linux) && defined(PPC) */
 
 #endif /* HAS_TEST_AND_SET */
diff --git a/src/backend/utils/adt/dt.c b/src/backend/utils/adt/dt.c
index 4c45d85753c..bf4bb3feb83 100644
--- a/src/backend/utils/adt/dt.c
+++ b/src/backend/utils/adt/dt.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/backend/utils/adt/Attic/dt.c,v 1.29 1997/07/24 20:15:53 momjian Exp $
+ *    $Header: /cvsroot/pgsql/src/backend/utils/adt/Attic/dt.c,v 1.30 1997/07/29 14:07:54 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -3758,3 +3758,30 @@ printf( "EncodeTimeSpan- result is %s\n", str);
 
     return 0;
 } /* EncodeTimeSpan() */
+
+
+#if defined(linux) && defined(PPC)
+int datetime_is_epoch(double j)
+{
+  static union {
+    double epoch;
+    unsigned char c[8];
+  } u;
+
+  u.c[0] = 0x80;	/* sign bit */
+  u.c[1] = 0x10;	/* DBL_MIN */
+
+  return(j == u.epoch);
+}
+int datetime_is_current(double j)
+{
+  static union {
+    double current;
+    unsigned char c[8];
+  } u;
+
+  u.c[1] = 0x10;	/* DBL_MIN */
+
+  return(j == u.current);
+}
+#endif