Since HPUX now exists for Itanium, we should decouple the assumption

that OS=hpux is the same as CPU=hppa.  First steps at doing this.
With these patches, we still work on hppa with either gcc or HP's cc.
We might work on hpux/itanium with gcc, but I can't test it.  Definitely
will not work on hpux/itanium with non-gcc compiler, for lack of spinlock
code.

configure

@@ -1453,7 +1453,7 @@ PORTNAME=$template
 # assembler code in src/include/storage/s_lock.h, so we just use
 # a dummy file here.
 case $host in
-  *-*-hpux*)        need_tas=yes; tas_file=hpux.s ;;
+  hppa*-*-hpux*)        need_tas=yes; tas_file=hpux_hppa.s ;;
   sparc-*-solaris*) need_tas=yes; tas_file=solaris_sparc.s ;;
   i?86-*-solaris*)   need_tas=yes; tas_file=solaris_i386.s ;;
   *)                need_tas=no;  tas_file=dummy.s ;;

configure.in

@@ -1,5 +1,5 @@
 dnl Process this file with autoconf to produce a configure script.
-dnl $Header: /cvsroot/pgsql/configure.in,v 1.271 2003/08/01 03:10:03 momjian Exp $
+dnl $Header: /cvsroot/pgsql/configure.in,v 1.272 2003/08/01 19:12:52 tgl Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -108,7 +108,7 @@ AC_SUBST(PORTNAME)
 # assembler code in src/include/storage/s_lock.h, so we just use
 # a dummy file here.
 case $host in
-  *-*-hpux*)        need_tas=yes; tas_file=hpux.s ;;
+  hppa*-*-hpux*)        need_tas=yes; tas_file=hpux_hppa.s ;;
   sparc-*-solaris*) need_tas=yes; tas_file=solaris_sparc.s ;;
   i?86-*-solaris*)   need_tas=yes; tas_file=solaris_i386.s ;;
   *)                need_tas=no;  tas_file=dummy.s ;;

src/backend/port/hpux/tas.c.template

@@ -1,8 +1,12 @@
 /*
+ * tas() for HPPA.
+ *
  * To generate tas.s using this template:
  *	1. cc +O2 -S -c tas.c
  *	2. edit tas.s:
  *		- replace the LDW with LDCWX
+ *	3. install as src/backend/port/tas/hpux_hppa.s.
+ *
  * For details about the LDCWX instruction, see the "Precision
  * Architecture and Instruction Reference Manual" (09740-90014 of June
  * 1987), p. 5-38.

src/include/port/hpux.h

@@ -1,9 +1,3 @@
-#define HAS_TEST_AND_SET
-typedef struct
-{
-	int			sema[4];
-} slock_t;
-
 #ifndef			BIG_ENDIAN
 #define			BIG_ENDIAN		4321
 #endif
@@ -13,7 +7,28 @@ typedef struct
 #ifndef			PDP_ENDIAN
 #define			PDP_ENDIAN		3412
 #endif
+
+#if defined(__hppa)
+
+#define HAS_TEST_AND_SET
+typedef struct
+{
+	int			sema[4];
+} slock_t;
+
 #ifndef			BYTE_ORDER
 #define			BYTE_ORDER		BIG_ENDIAN
+#endif
+
+#elif defined(__ia64)
+
+#define HAS_TEST_AND_SET
+typedef unsigned int slock_t;
+
+#ifndef			BYTE_ORDER
+#define			BYTE_ORDER		LITTLE_ENDIAN
+#endif
 
+#else
+#error unrecognized CPU type for HP-UX
 #endif

src/include/storage/s_lock.h

@@ -63,7 +63,7 @@
  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- *	  $Id: s_lock.h,v 1.110 2003/07/20 04:31:32 momjian Exp $
+ *	  $Id: s_lock.h,v 1.111 2003/08/01 19:12:52 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -114,7 +114,7 @@ tas(volatile slock_t *lock)
 
 
 /* Intel Itanium */
-#ifdef __ia64__
+#if defined(__ia64__) || defined(__ia64)
 #define TAS(lock) tas(lock)
 
 static __inline__ int
@@ -131,7 +131,7 @@ tas(volatile slock_t *lock)
 	return (int) ret;
 }
 
-#endif	 /* __ia64__ */
+#endif	 /* __ia64__ || __ia64 */
 
 
 #if defined(__arm__) || defined(__arm__)
@@ -368,8 +368,9 @@ tas(volatile slock_t *s_lock)
 
 
 /*************************************************************************
- * These are the platforms that do not use inline assembler (and hence
- * have common code for gcc and non-gcc compilers, if both are available).
+ * These are the platforms that have only one compiler, or do not use inline
+ * assembler (and hence have common code for gcc and non-gcc compilers,
+ * if both are available).
  */
 
 
@@ -437,9 +438,9 @@ tas(volatile slock_t *lock)
 #endif	 /* __alpha */
 
 
-#if defined(__hpux)
+#if defined(__hppa)
 /*
- * HP-UX (PA-RISC)
+ * HP's PA-RISC
  *
  * Note that slock_t on PA-RISC is a structure instead of char
  * (see include/port/hpux.h).
@@ -459,7 +460,7 @@ tas(volatile slock_t *lock)
 
 #define S_LOCK_FREE(lock)	( *(int *) (((long) (lock) + 15) & ~15) != 0)
 
-#endif	 /* __hpux */
+#endif	 /* __hppa */
 
 #if defined(__QNX__) && defined(__WATCOMC__)
 /*