Sat Jan 6 16:39:14 1996 Roland McGrath <roland@churchy.gnu.ai.mit.edu>cvs/libc-960108cvs/libc-960107

	* Makefile (subdirs): Added db.

	* resolv/Makefile (routines): Add res_data.
	* resolv/res_data.c, resolv/res_debug.c, resolv/resolv.h:
	Updated from BIND 4.9.3 final release.

	* elf/dynamic-link.h (elf_get_dynamic_info): Handle
	processor-specific tags.
	(ELF_DYNAMIC_DO_REL, ELF_DYNAMIC_DO_RELA): Handle absent DT_PLTREL tag.

	* elf/elf.h (DT_MIPS_NUM, DT_PROCNUM): New macros.
	* elf/link.h (struct link_map): Extend `l_info' by DT_PROCNUM.

	* sysdeps/i386/dl-machine.h (elf_machine_runtime_setup): Take new
	arg LAZY.  Only do our work if LAZY and there is a DT_JMPREL record.
	* elf/dl-reloc.c (_dl_relocate_object): Call
	elf_machine_runtime_setup unconditionally, and pass it LAZY flag.

	* elf/dl-load.c: Fixed ELFMAG check to work for either byte order.
	Align end of load segment only to page size, not to segment alignment.

11 files changed, 191 insertions, 73 deletions

diff --git a/ChangeLog b/ChangeLog
index c7b7ded383..bc02d7114e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,26 @@
+Sat Jan  6 16:39:14 1996  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* Makefile (subdirs): Added db.
+
+	* resolv/Makefile (routines): Add res_data.
+	* resolv/res_data.c, resolv/res_debug.c, resolv/resolv.h:
+	Updated from BIND 4.9.3 final release.
+
+	* elf/dynamic-link.h (elf_get_dynamic_info): Handle
+	processor-specific tags.
+	(ELF_DYNAMIC_DO_REL, ELF_DYNAMIC_DO_RELA): Handle absent DT_PLTREL tag.
+
+	* elf/elf.h (DT_MIPS_NUM, DT_PROCNUM): New macros.
+	* elf/link.h (struct link_map): Extend `l_info' by DT_PROCNUM.
+
+	* sysdeps/i386/dl-machine.h (elf_machine_runtime_setup): Take new
+	arg LAZY.  Only do our work if LAZY and there is a DT_JMPREL record.
+	* elf/dl-reloc.c (_dl_relocate_object): Call
+	elf_machine_runtime_setup unconditionally, and pass it LAZY flag.
+
+	* elf/dl-load.c: Fixed ELFMAG check to work for either byte order.
+	Align end of load segment only to page size, not to segment alignment.
+
 Thu Jan  4 11:35:18 1996  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
 
 	* sysdeps/mach/hurd/setitimer.c: Code rearranged a bit to use new
diff --git a/Makefile b/Makefile
index f1aae8ed0b..4f1191de5b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+# Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -51,7 +51,7 @@ sysdep-subdirs := $(subst $(\n), ,$(sysdep-subdirs))
 endif
 
 # These are the subdirectories containing the library source.
-subdirs = csu assert ctype locale intl math setjmp signal stdlib	\
+subdirs = csu assert ctype db locale intl math setjmp signal stdlib	\
 	  stdio-common $(stdio) malloc string time dirent grp pwd	\
 	  posix io termios resource misc socket sysvipc gmon gnulib	\
 	  $(wildcard crypt) manual $(sysdep-subdirs) elf
diff --git a/elf/dl-reloc.c b/elf/dl-reloc.c
index 7e4f4992a7..b7d484d2df 100644
--- a/elf/dl-reloc.c
+++ b/elf/dl-reloc.c
@@ -1,5 +1,5 @@
 /* Relocate a shared object and resolve its references to other loaded objects.
-Copyright (C) 1995 Free Software Foundation, Inc.
+Copyright (C) 1995, 1996 Free Software Foundation, Inc.
 This file is part of the GNU C Library.
 
 The GNU C Library is free software; you can redistribute it and/or
@@ -93,10 +93,9 @@ _dl_relocate_object (struct link_map *l, int lazy)
       l->l_prev->l_next = l;
   }
 
-  if (l->l_info[DT_JMPREL] && lazy)
-    /* Set up the PLT so its unrelocated entries will
-       jump to _dl_runtime_resolve, which will relocate them.  */
-    elf_machine_runtime_setup (l);
+  /* Set up the PLT so its unrelocated entries will
+     jump to _dl_runtime_resolve, which will relocate them.  */
+  elf_machine_runtime_setup (l, lazy);
 
   l->l_relocated = 1;
 
diff --git a/elf/dynamic-link.h b/elf/dynamic-link.h
index 84d440ec5b..0c4e99d2b6 100644
--- a/elf/dynamic-link.h
+++ b/elf/dynamic-link.h
@@ -25,11 +25,11 @@ Cambridge, MA 02139, USA.  */
 /* Read the dynamic section at DYN and fill in INFO with indices DT_*.  */
 
 static inline void
-elf_get_dynamic_info (Elf32_Dyn *dyn, Elf32_Dyn *info[DT_NUM])
+elf_get_dynamic_info (Elf32_Dyn *dyn, Elf32_Dyn *info[DT_NUM + DT_PROCNUM])
 {
   unsigned int i;
 
-  for (i = 0; i < DT_NUM; ++i)
+  for (i = 0; i < DT_NUM + DT_PROCNUM; ++i)
     info[i] = NULL;
 
   if (! dyn)
@@ -37,8 +37,14 @@ elf_get_dynamic_info (Elf32_Dyn *dyn, Elf32_Dyn *info[DT_NUM])
 
   while (dyn->d_tag != DT_NULL)
     {
-      assert (dyn->d_tag < DT_NUM);
-      info[dyn->d_tag] = dyn++;
+      if (dyn->d_tag < DT_NUM)
+	info[dyn->d_tag] = dyn;
+      else if (dyn->d_tag >= DT_LOPROC &&
+	       dyn->d_tag < DT_LOPROC + DT_PROCNUM)
+	info[dyn->d_tag - DT_LOPROC + DT_NUM] = dyn;
+      else
+	assert (! "bad dynamic tag");	
+      dyn++;
     }
 
   if (info[DT_RELA])
@@ -60,7 +66,8 @@ elf_get_dynamic_info (Elf32_Dyn *dyn, Elf32_Dyn *info[DT_NUM])
 #define ELF_DYNAMIC_DO_REL(map, lazy, resolve)				      \
   if ((map)->l_info[DT_REL])						      \
     elf_dynamic_do_rel ((map), DT_REL, DT_RELSZ, (resolve), 0);		      \
-  if ((map)->l_info[DT_PLTREL]->d_un.d_val == DT_REL)			      \
+  if ((map)->l_info[DT_PLTREL] &&					      \
+      (map)->l_info[DT_PLTREL]->d_un.d_val == DT_REL)			      \
     elf_dynamic_do_rel ((map), DT_JMPREL, DT_PLTRELSZ, (resolve), (lazy));
 #else
 #define ELF_DYNAMIC_DO_RELA(map, lazy, resolve) /* Nothing to do.  */
@@ -72,7 +79,8 @@ elf_get_dynamic_info (Elf32_Dyn *dyn, Elf32_Dyn *info[DT_NUM])
 #define ELF_DYNAMIC_DO_RELA(map, lazy, resolve)				      \
   if ((map)->l_info[DT_RELA])						      \
     elf_dynamic_do_rela ((map), DT_RELA, DT_RELASZ, (resolve), 0);	      \
-  if ((map)->l_info[DT_PLTREL]->d_un.d_val == DT_RELA)			      \
+  if ((map)->l_info[DT_PLTREL] &&					      \
+      (map)->l_info[DT_PLTREL]->d_un.d_val == DT_RELA)			      \
     elf_dynamic_do_rela ((map), DT_JMPREL, DT_PLTRELSZ, (resolve), (lazy));
 #else
 #define ELF_DYNAMIC_DO_RELA(map, lazy, resolve) /* Nothing to do.  */
diff --git a/elf/elf.h b/elf/elf.h
index 85c992cf16..6eaf31fc08 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -1,5 +1,5 @@
 /* This file defines standard ELF types, structures, and macros.
-Copyright (C) 1995 Free Software Foundation, Inc.
+Copyright (C) 1995, 1996 Free Software Foundation, Inc.
 Contributed by Ian Lance Taylor (ian@cygnus.com).
 
 This file is part of the GNU C Library.
@@ -326,9 +326,10 @@ typedef struct
 #define DT_DEBUG	21		/* For debugging; unspecified */
 #define DT_TEXTREL	22		/* Reloc might modify .text */
 #define DT_JMPREL	23		/* Address of PLT relocs */
-#define	DT_NUM		24		/* Number used.  */
+#define	DT_NUM		24		/* Number used */
 #define DT_LOPROC	0x70000000	/* Start of processor-specific */
 #define DT_HIPROC	0x7fffffff	/* End of processor-specific */
+#define	DT_PROCNUM	DT_MIPS_NUM	/* Most used by any processor */
 
 /* Standard 64 bit ELF types.  */
 
@@ -573,6 +574,7 @@ typedef struct
 #define DT_MIPS_UNREFEXTNO   0x70000012	/* First external DYNSYM */
 #define DT_MIPS_GOTSYM	     0x70000013	/* First GOT entry in DYNSYM */
 #define DT_MIPS_HIPAGENO     0x70000014	/* Number of GOT page table entries */
+#define DT_MIPS_NUM	     0x15
 
 /* Legal values for DT_MIPS_FLAG Elf32_Dyn entry.  */
 
diff --git a/elf/link.h b/elf/link.h
index 4848f4b99b..bdcfcf27f4 100644
--- a/elf/link.h
+++ b/elf/link.h
@@ -1,5 +1,5 @@
 /* Run-time dynamic linker data structures for loaded ELF shared objects.
-Copyright (C) 1995 Free Software Foundation, Inc.
+Copyright (C) 1995, 1996 Free Software Foundation, Inc.
 This file is part of the GNU C Library.
 
 The GNU C Library is free software; you can redistribute it and/or
@@ -82,7 +82,10 @@ struct link_map
        They may change without notice.  */
 
     const char *l_libname;	/* Name requested (before search).  */
-    Elf32_Dyn *l_info[DT_NUM];	/* Indexed pointers to dynamic section.  */
+    /* Indexed pointers to dynamic section.
+       [0,DT_NUM) are indexed by the processor-independent tags.
+       [DT_NUM,DT_NUM+DT_PROCNUM] are indexed by the tag minus DT_LOPROC.  */
+    Elf32_Dyn *l_info[DT_NUM + DT_PROCNUM];
     const Elf32_Phdr *l_phdr;	/* Pointer to program header table in core.  */
     Elf32_Word l_phnum;		/* Number of program header entries.  */
     Elf32_Addr l_entry;		/* Entry point location.  */
@@ -141,7 +144,7 @@ extern int _dl_secure;
    zero; OBJECT is the name of the problematical shared object, or null if
    it is a general problem; ERRSTRING is a string describing the specific
    problem.  */
-   
+
 extern void _dl_signal_error (int errcode,
 			      const char *object,
 			      const char *errstring)
diff --git a/resolv/Makefile b/resolv/Makefile
index f1a8701017..db90dc7e4b 100644
--- a/resolv/Makefile
+++ b/resolv/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1994, 1995 Free Software Foundation, Inc.
+# Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -25,7 +25,7 @@ headers	:= resolv.h netdb.h arpa/nameser.h sys/bitypes.h
 distribute := ../conf/portability.h
 
 routines := gethnamaddr getnetbyaddr getnetbyname getnetent getnetnamadr \
-	    herror nsap_addr res_comp res_debug res_init res_mkquery \
+	    herror nsap_addr res_comp res_debug res_data res_init res_mkquery \
 	    res_query res_send sethostent inet_addr
 
 include ../Rules
diff --git a/resolv/res_data.c b/resolv/res_data.c
new file mode 100644
index 0000000000..18dbc83477
--- /dev/null
+++ b/resolv/res_data.c
@@ -0,0 +1,114 @@
+/*
+ * ++Copyright++ 1995
+ * -
+ * Copyright (c) 1995
+ *    The Regents of the University of California.  All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ * 	This product includes software developed by the University of
+ * 	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * -
+ * Portions Copyright (c) 1993 by Digital Equipment Corporation.
+ * 
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies, and that
+ * the name of Digital Equipment Corporation not be used in advertising or
+ * publicity pertaining to distribution of the document or software without
+ * specific, written prior permission.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
+ * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ * -
+ * --Copyright--
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char rcsid[] = "$Id$";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+
+#include <stdio.h>
+#include <ctype.h>
+#include <resolv.h>
+#if defined(BSD) && (BSD >= 199103)
+# include <unistd.h>
+# include <stdlib.h>
+# include <string.h>
+#else
+# include "../conf/portability.h"
+#endif
+
+const char *_res_opcodes[] = {
+	"QUERY",
+	"IQUERY",
+	"CQUERYM",
+	"CQUERYU",	/* experimental */
+	"NOTIFY",	/* experimental */
+	"5",
+	"6",
+	"7",
+	"8",
+	"UPDATEA",
+	"UPDATED",
+	"UPDATEDA",
+	"UPDATEM",
+	"UPDATEMA",
+	"ZONEINIT",
+	"ZONEREF",
+};
+
+const char *_res_resultcodes[] = {
+	"NOERROR",
+	"FORMERR",
+	"SERVFAIL",
+	"NXDOMAIN",
+	"NOTIMP",
+	"REFUSED",
+	"6",
+	"7",
+	"8",
+	"9",
+	"10",
+	"11",
+	"12",
+	"13",
+	"14",
+	"NOCHANGE",
+};
diff --git a/resolv/res_debug.c b/resolv/res_debug.c
index c5e68e36e9..b3dfcdf8f6 100644
--- a/resolv/res_debug.c
+++ b/resolv/res_debug.c
@@ -76,43 +76,8 @@ static char rcsid[] = "$Id$";
 # include "../conf/options.h"
 #endif
 
-const char *_res_opcodes[] = {
-	"QUERY",
-	"IQUERY",
-	"CQUERYM",
-	"CQUERYU",	/* experimental */
-	"NOTIFY",	/* experimental */
-	"5",
-	"6",
-	"7",
-	"8",
-	"UPDATEA",
-	"UPDATED",
-	"UPDATEDA",
-	"UPDATEM",
-	"UPDATEMA",
-	"ZONEINIT",
-	"ZONEREF",
-};
-
-const char *_res_resultcodes[] = {
-	"NOERROR",
-	"FORMERR",
-	"SERVFAIL",
-	"NXDOMAIN",
-	"NOTIMP",
-	"REFUSED",
-	"6",
-	"7",
-	"8",
-	"9",
-	"10",
-	"11",
-	"12",
-	"13",
-	"14",
-	"NOCHANGE",
-};
+extern const char *_res_opcodes[];
+extern const char *_res_resultcodes[];
 
 /* XXX: we should use getservbyport() instead. */
 static const char *
@@ -310,7 +275,7 @@ __fp_nquery(msg, len, file)
 		putc('\n', file);
 	}
 	if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEADX))
-	putc(';', file);
+		putc(';', file);
 	if ((!_res.pfcode) || (_res.pfcode & RES_PRF_HEAD2)) {
 		fprintf(file, "; flags:");
 		if (hp->qr)
@@ -342,10 +307,10 @@ __fp_nquery(msg, len, file)
 			fprintf(file, ";; QUESTIONS:\n");
 		while (--n >= 0) {
 			if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
-			fprintf(file, ";;\t");
+				fprintf(file, ";;\t");
 			TruncTest(cp);
 			if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
-			cp = p_cdnname(cp, msg, len, file);
+				cp = p_cdnname(cp, msg, len, file);
 			else {
 				int n;
 				char name[MAXDNAME];
@@ -368,7 +333,7 @@ __fp_nquery(msg, len, file)
 					__p_class(_getshort((u_char*)cp)));
 			cp += INT16SZ;
 			if ((!_res.pfcode) || (_res.pfcode & RES_PRF_QUES))
-			putc('\n', file);
+				putc('\n', file);
 		}
 	}
 	/*
diff --git a/resolv/resolv.h b/resolv/resolv.h
index af92be4c05..fb3de282b2 100644
--- a/resolv/resolv.h
+++ b/resolv/resolv.h
@@ -78,7 +78,7 @@
  * is new enough to contain a certain feature.
  */
 
-#define	__RES	19950621
+#define	__RES	19951031
 
 /*
  * Resolver configuration file.
@@ -121,6 +121,7 @@ struct __res_state {
 		struct in_addr	addr;
 		u_int32_t	mask;
 	} sort_list[MAXRESOLVSORT];
+	char	pad[72];		/* On an i38this means 512b total. */
 };
 
 /*
diff --git a/sysdeps/i386/dl-machine.h b/sysdeps/i386/dl-machine.h
index 7c22305307..4ce4d4b001 100644
--- a/sysdeps/i386/dl-machine.h
+++ b/sysdeps/i386/dl-machine.h
@@ -1,5 +1,5 @@
 /* Machine-dependent ELF dynamic relocation inline functions.  i386 version.
-Copyright (C) 1995 Free Software Foundation, Inc.
+Copyright (C) 1995, 1996 Free Software Foundation, Inc.
 This file is part of the GNU C Library.
 
 The GNU C Library is free software; you can redistribute it and/or
@@ -140,20 +140,23 @@ elf_machine_lazy_rel (struct link_map *map, const Elf32_Rel *reloc)
    entries will jump to the on-demand fixup code in dl-runtime.c.  */
 
 static inline void
-elf_machine_runtime_setup (struct link_map *l)
+elf_machine_runtime_setup (struct link_map *l, int lazy)
 {
   Elf32_Addr *got;
   extern void _dl_runtime_resolve (Elf32_Word);
 
-  /* The GOT entries for functions in the PLT have not yet been filled
-     in.  Their initial contents will arrange when called to push an
-     offset into the .rel.plt section, push _GLOBAL_OFFSET_TABLE_[1],
-     and then jump to _GLOBAL_OFFSET_TABLE[2].  */
-  got = (Elf32_Addr *) (l->l_addr + l->l_info[DT_PLTGOT]->d_un.d_ptr);
-  got[1] = (Elf32_Addr) l;	/* Identify this shared object.  */
-  /* This function will get called to fix up the GOT entry indicated by
-     the offset on the stack, and then jump to the resolved address.  */
-  got[2] = (Elf32_Addr) &_dl_runtime_resolve;
+  if (l->l_info[DT_JMPREL] && lazy)
+    {
+      /* The GOT entries for functions in the PLT have not yet been filled
+	 in.  Their initial contents will arrange when called to push an
+	 offset into the .rel.plt section, push _GLOBAL_OFFSET_TABLE_[1],
+	 and then jump to _GLOBAL_OFFSET_TABLE[2].  */
+      got = (Elf32_Addr *) (l->l_addr + l->l_info[DT_PLTGOT]->d_un.d_ptr);
+      got[1] = (Elf32_Addr) l;	/* Identify this shared object.  */
+      /* This function will get called to fix up the GOT entry indicated by
+	 the offset on the stack, and then jump to the resolved address.  */
+      got[2] = (Elf32_Addr) &_dl_runtime_resolve;
+    }
 }