Get the ultrix4 ports back in sync...

src/backend/port/dynloader/ultrix4.c

@@ -0,0 +1,75 @@
+/*-------------------------------------------------------------------------
+ *
+ * dynloader.c--
+ *	  This dynamic loader uses Andrew Yu's libdl-1.0 package for Ultrix 4.x.
+ *	  (Note that pg_dlsym and pg_dlclose are actually macros defined in
+ *	  "port-protos.h".)
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ *	  $Header: /cvsroot/pgsql/src/backend/port/dynloader/ultrix4.c,v 1.1 1998/03/10 05:23:40 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#include <stdio.h>
+#include <postgres.h>
+#include "dl.h"
+#include <utils/dynamic_loader.h>
+#include "c.h"
+#include "fmgr.h"
+#include "port-protos.h"
+#include "utils/elog.h"
+
+extern char pg_pathname[];
+
+void *
+pg_dlopen(char *filename)
+{
+	static int	dl_initialized = 0;
+	void	   *handle;
+
+	/*
+	 * initializes the dynamic loader with the executable's pathname.
+	 * (only needs to do this the first time pg_dlopen is called.)
+	 */
+	if (!dl_initialized)
+	{
+		if (!dl_init(pg_pathname))
+		{
+			return NULL;
+		}
+
+		/*
+		 * if there are undefined symbols, we want dl to search from the
+		 * following libraries also.
+		 */
+		dl_setLibraries("/usr/lib/libm_G0.a:/usr/lib/libc_G0.a");
+		dl_initialized = 1;
+	}
+
+	/*
+	 * open the file. We do the symbol resolution right away so that we
+	 * will know if there are undefined symbols. (This is in fact the same
+	 * semantics as "ld -A". ie. you cannot have undefined symbols.
+	 */
+	if ((handle = dl_open(filename, DL_NOW)) == NULL)
+	{
+		int			count;
+		char	  **list = dl_undefinedSymbols(&count);
+
+		/* list the undefined symbols, if any */
+		if (count)
+		{
+			elog(NOTICE, "dl: Undefined:");
+			while (*list)
+			{
+				elog(NOTICE, "  %s", *list);
+				list++;
+			}
+		}
+	}
+
+	return (void *) handle;
+}

src/backend/port/dynloader/ultrix4.h

@@ -0,0 +1,123 @@
+/*-------------------------------------------------------------------------
+ *
+ * dl.h--
+ *
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: ultrix4.h,v 1.1 1998/03/10 05:23:46 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+/*
+ *	Ultrix 4.x Dynamic Loader Library Version 1.0
+ *
+ *	dl.h--
+ *		header file for the Dynamic Loader Library
+ *
+ *
+ *	Copyright (c) 1993 Andrew K. Yu, University of California at Berkeley
+ *	All rights reserved.
+ *
+ *	Permission to use, copy, modify, and distribute this software and its
+ *	documentation for educational, research, and non-profit purposes and
+ *	without fee is hereby granted, provided that the above copyright
+ *	notice appear in all copies and that both that copyright notice and
+ *	this permission notice appear in supporting documentation. Permission
+ *	to incorporate this software into commercial products can be obtained
+ *	from the author. The University of California and the author make
+ *	no representations about the suitability of this software for any
+ *	purpose. It is provided "as is" without express or implied warranty.
+ *
+ */
+#ifndef _DL_HEADER_
+#define _DL_HEADER_
+
+#include <stdio.h>				/* needed to declare FILE for ldfcn.h */
+#include <filehdr.h>
+#include <syms.h>
+#include <ldfcn.h>
+#include <reloc.h>
+#include <scnhdr.h>
+
+
+typedef long CoreAddr;
+
+
+typedef struct ScnInfo
+{
+	CoreAddr	addr;			/* starting address of the section */
+	SCNHDR		hdr;			/* section header */
+	RELOC	   *relocEntries;	/* relocation entries */
+}			ScnInfo;
+
+typedef enum
+{
+	DL_NEEDRELOC,				/* still need relocation */
+	DL_RELOCATED,				/* no relocation necessary */
+	DL_INPROG					/* relocation in progress */
+}			dlRStatus;
+
+typedef struct JmpTbl
+{
+	char	   *block;			/* the jump table memory block */
+	struct JmpTbl *next;		/* next block */
+}			JmpTbl;
+
+typedef struct dlFile
+{
+	char	   *filename;		/* file name of the object file */
+
+	int			textSize;		/* used by mprotect */
+	CoreAddr	textAddress;	/* start addr of text section */
+	long		textVaddr;		/* vaddr of text section in obj file */
+	CoreAddr	rdataAddress;	/* start addr of rdata section */
+	long		rdataVaddr;		/* vaddr of text section in obj file */
+	CoreAddr	dataAddress;	/* start addr of data section */
+	long		dataVaddr;		/* vaddr of text section in obj file */
+	CoreAddr	bssAddress;		/* start addr of bss section */
+	long		bssVaddr;		/* vaddr of text section in obj file */
+
+	int			nsect;			/* number of sections */
+	ScnInfo    *sect;			/* details of each section (array) */
+
+	int			issExtMax;		/* size of string space */
+	char	   *extss;			/* extern sym string space (in core) */
+	int			iextMax;		/* maximum number of Symbols */
+	pEXTR		extsyms;		/* extern syms */
+
+	dlRStatus	relocStatus;	/* what relocation needed? */
+	int			needReloc;
+
+	JmpTbl	   *jmptable;		/* the jump table for R_JMPADDR */
+
+	struct dlFile *next;		/* next member of the archive */
+}			dlFile;
+
+typedef struct dlSymbol
+{
+	char	   *name;			/* name of the symbol */
+	long		addr;			/* address of the symbol */
+	dlFile	   *objFile;		/* from which file */
+}			dlSymbol;
+
+/*
+ * prototypes for the dl* interface
+ */
+extern void *dl_open( /* char *filename, int mode */ );
+extern void *dl_sym( /* void *handle, char *name */ );
+extern void dl_close( /* void *handle */ );
+extern char *dl_error( /* void */ );
+
+#define   DL_LAZY		0		/* lazy resolution */
+#define   DL_NOW		1		/* immediate resolution */
+
+/*
+ * Miscellaneous utility routines:
+ */
+extern char **dl_undefinedSymbols( /* int *count */ );
+extern void dl_printAllSymbols( /* void *handle */ );
+extern void dl_setLibraries( /* char *libs */ );
+
+#endif							/* _DL_HEADER_ */