Remove HP-UX port.

HP-UX hardware is no longer produced, build farm coverage recently
ended, and there are no known active maintainers targeting this OS.
Since there is a major rewrite of the build system in the pipeline for
PostgreSQL 16, and that requires development, testing and maintainance
for each OS and tool chain, it seems like a good time to drop support
for:

 * HP-UX, the operating system.
 * HP aCC, the HP-UX native compiler.

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Andres Freund <andres@anarazel.de>
Reviewed-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Discussion: https://postgr.es/m/1415825.1656893299%40sss.pgh.pa.us

5 files changed, 5 insertions, 100 deletions

diff --git a/src/backend/libpq/ifaddr.c b/src/backend/libpq/ifaddr.c
index a41808aff0a..5494c9b3032 100644
--- a/src/backend/libpq/ifaddr.c
+++ b/src/backend/libpq/ifaddr.c
@@ -333,17 +333,11 @@ pg_foreach_ifaddr(PgIfAddrCallback callback, void *cb_data)
 #endif
 
 /*
- * SIOCGIFCONF does not return IPv6 addresses on Solaris
- * and HP/UX. So we prefer SIOCGLIFCONF if it's available.
- *
- * On HP/UX, however, it *only* returns IPv6 addresses,
- * and the structs are named slightly differently too.
- * We'd have to do another call with SIOCGIFCONF to get the
- * IPv4 addresses as well. We don't currently bother, just
- * fall back to SIOCGIFCONF on HP/UX.
+ * SIOCGIFCONF does not return IPv6 addresses on Solaris.
+ * So we prefer SIOCGLIFCONF if it's available.
  */
 
-#if defined(SIOCGLIFCONF) && !defined(__hpux)
+#if defined(SIOCGLIFCONF)
 
 /*
  * Enumerate the system's network interface addresses and call the callback
diff --git a/src/backend/port/hpux/tas.c.template b/src/backend/port/hpux/tas.c.template
deleted file mode 100644
index 5ccbbcde9aa..00000000000
--- a/src/backend/port/hpux/tas.c.template
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * 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.
- */
-
-int
-tas(lock)
-    int *lock;	/* LDCWX is a word instruction */
-{
-    /*
-     * LDCWX requires that we align the "semaphore" to a 16-byte
-     * boundary.  The actual datum is a single word (4 bytes).
-     */
-    lock = ((uintptr_t) lock + 15) & ~15;
-
-    /*
-     * The LDCWX instruction atomically clears the target word and
-     * returns the previous value.  Hence, if the instruction returns
-     * 0, someone else has already acquired the lock before we tested
-     * it (i.e., we have failed).
-     *
-     * Notice that this means that we actually clear the word to set
-     * the lock and set the word to clear the lock.  This is the
-     * opposite behavior from the SPARC LDSTUB instruction.  For some
-     * reason everything that H-P does is rather baroque...
-     */
-    if (*lock) {	/* this generates the LDW */
-	return(0);	/* success */
-    }
-    return(1);    	/* failure */
-}
diff --git a/src/backend/port/tas/hpux_hppa.s b/src/backend/port/tas/hpux_hppa.s
deleted file mode 100644
index d978a7cb030..00000000000
--- a/src/backend/port/tas/hpux_hppa.s
+++ /dev/null
@@ -1,28 +0,0 @@
-
-        .SPACE  $TEXT$,SORT=8
-        .SUBSPA $CODE$,QUAD=0,ALIGN=4,ACCESS=44,CODE_ONLY,SORT=24
-tas
-        .PROC
-        .CALLINFO CALLER,FRAME=0,ENTRY_SR=3
-        .ENTRY
-        LDO     15(%r26),%r31   ;offset 0x0
-        DEPI    0,31,4,%r31     ;offset 0x4
-        LDCWX   0(0,%r31),%r23  ;offset 0x8
-        COMICLR,=       0,%r23,%r0      ;offset 0xc
-        DEP,TR  %r0,31,32,%r28  ;offset 0x10
-$00000001
-        LDI     1,%r28  ;offset 0x14
-$L0
-        .EXIT
-        BV,N    %r0(%r2)        ;offset 0x18
-        .PROCEND ;in=26;out=28;
-
-
-        .SPACE  $TEXT$
-        .SUBSPA $CODE$
-        .SPACE  $PRIVATE$,SORT=16
-        .SUBSPA $DATA$,QUAD=1,ALIGN=8,ACCESS=31,SORT=16
-        .SPACE  $TEXT$
-        .SUBSPA $CODE$
-        .EXPORT tas,ENTRY,PRIV_LEV=3,ARGW0=GR,RTNVAL=GR
-        .END
diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c
index 5ab91c2c581..cbb0ec606f9 100644
--- a/src/backend/tcop/postgres.c
+++ b/src/backend/tcop/postgres.c
@@ -3396,7 +3396,7 @@ ProcessInterrupts(void)
 /*
  * IA64-specific code to fetch the AR.BSP register for stack depth checks.
  *
- * We currently support gcc, icc, and HP-UX's native compiler here.
+ * We currently support gcc and icc here.
  *
  * Note: while icc accepts gcc asm blocks on x86[_64], this is not true on
  * ia64 (at least not in icc versions before 12.x).  So we have to carry a
@@ -3404,11 +3404,7 @@ ProcessInterrupts(void)
  */
 #if defined(__ia64__) || defined(__ia64)
 
-#if defined(__hpux) && !defined(__GNUC__) && !defined(__INTEL_COMPILER)
-/* Assume it's HP-UX native compiler */
-#include <ia64/sys/inline.h>
-#define ia64_get_bsp() ((char *) (_Asm_mov_from_ar(_AREG_BSP, _NO_FENCE)))
-#elif defined(__INTEL_COMPILER)
+#if defined(__INTEL_COMPILER)
 /* icc */
 #include <asm/ia64regs.h>
 #define ia64_get_bsp() ((char *) __getReg(_IA64_REG_AR_BSP))
diff --git a/src/backend/utils/misc/ps_status.c b/src/backend/utils/misc/ps_status.c
index ec314c03f54..8520ce76bbd 100644
--- a/src/backend/utils/misc/ps_status.c
+++ b/src/backend/utils/misc/ps_status.c
@@ -15,9 +15,6 @@
 #include "postgres.h"
 
 #include <unistd.h>
-#ifdef HAVE_SYS_PSTAT_H
-#include <sys/pstat.h>			/* for HP-UX */
-#endif
 #ifdef HAVE_PS_STRINGS
 #include <machine/vmparam.h>	/* for old BSD */
 #include <sys/exec.h>
@@ -45,9 +42,6 @@ bool		update_process_title = true;
  * PS_USE_SETPROCTITLE
  *	   use the function setproctitle(const char *, ...)
  *	   (newer BSD systems)
- * PS_USE_PSTAT
- *	   use the pstat(PSTAT_SETCMD, )
- *	   (HPUX)
  * PS_USE_PS_STRINGS
  *	   assign PS_STRINGS->ps_argvstr = "string"
  *	   (some BSD systems)
@@ -67,8 +61,6 @@ bool		update_process_title = true;
 #define PS_USE_SETPROCTITLE_FAST
 #elif defined(HAVE_SETPROCTITLE)
 #define PS_USE_SETPROCTITLE
-#elif defined(HAVE_PSTAT) && defined(PSTAT_SETCMD)
-#define PS_USE_PSTAT
 #elif defined(HAVE_PS_STRINGS)
 #define PS_USE_PS_STRINGS
 #elif (defined(BSD) || defined(__hurd__)) && !defined(__darwin__)
@@ -376,15 +368,6 @@ set_ps_display(const char *activity)
 	setproctitle_fast("%s", ps_buffer);
 #endif
 
-#ifdef PS_USE_PSTAT
-	{
-		union pstun pst;
-
-		pst.pst_command = ps_buffer;
-		pstat(PSTAT_SETCMD, pst, ps_buffer_cur_len, 0, 0);
-	}
-#endif							/* PS_USE_PSTAT */
-
 #ifdef PS_USE_PS_STRINGS
 	PS_STRINGS->ps_nargvstr = 1;
 	PS_STRINGS->ps_argvstr = ps_buffer;