Update to 2.1.x development version cvs/libc-970218 cvs/libc-970217 cvs/libc-970216 cvs/libc-970215

1997-02-15 02:41  Miles Bader  <miles@gnu.ai.mit.edu>

	* argp/argp-help.c: Gettextize sources.
	* argp/argp-parse.c: Likewise.

1997-02-13 22:32  Ulrich Drepper  <drepper@cygnus.com>

	* features.h (__GLIBC_MINOR__): Bump to 1.

	* xlocale.h: New file.  Wrapper around locale/xlocale.h.
	* Makefile (distribute): Add xlocale.h.
	* locale/Makefile (routines): Add ctype_l.
	* locale/ctype-extn.c: Update copyright. De-ANSI-declfy.
	Add __isblank_l, __toascii_l and __isascii_l.
	* ctype/ctype.h: Add definitions and declarations for *_l functions.
	* locale/Makefile (headers): Add xlocale.h.
	(routines): Add newlocale, duplocale, and freelocale.
	* locale/localeinfo.h (MAX_USAGE_COUNT): New macro.
	(struct locale_data): Add new fields mmaped and usage_count.
	Correct various declarations.
	* locale/C-collate.c: Define value for new fields mmaped and
	usage_count.
	* locale/C-ctype.c: Likewise.
	* locale/C-messages.c: Likewise.
	* locale/C-monetary.c: Likewise.
	* locale/C-numeric.c: Likewise.
	* locale/C-time.c: Likewise.
	* locale/loadlocale.c (_nl_load_locale): Initialize mmaped and
	usage_count fields.
	* locale/locale.h: Don't define locale_t here (moved to xlocale.h).
	Correct prototypes for __newlocale and __freelocale.
	Add prototype for __duplocale.
	* locale/findlocale.c (copy): Remove function.  Use __strdup instead.
	(_nl_remove_locale): New function.
	* locale/nl_langinfo.c: Don't declare locale_data objects as const.
	* locale/setlocale.c: Likewise.
	* locale/weight.h: Change for use with locale objects.
	* locale/xlocale.h: New file.  Define __locale_t type.
	* locale/newlocale.c: New file.  Create new locale object.
	* locale/freelocale.c: New file.  Destroy locale object.
	* locale/duplocale.c: New file.  Create copy of locale object.
	* stdlib/Makefile (routines): Add strfmon_l.
	* stdlib/monetary.h [__USE_GNU]: Declare __strfmon_l.
	* stdlib/strfmon.c: Add support for use in extended locale model.
	* stdlib/strfmon_l.c: New file.
	* string/Makefile (routines): Add strcoll_l and strxfrm_l.
	* string/strcoll.c: Change for use in extended locale model.
	* string/strxfrm.c: Likewise.
	* string/strcoll_l.c: New file.  Implement __strcoll_l function.
	* string/strxfrm_l.c: New file.  Implement __strxfrm_l function.
	* wcsmbs/Makefile (routines): Add wcscoll_l and wcsxfrm_l.
	* wcsmbs/wchar.h [__USE_GNU]: Declare wcscoll_l and wcsxfrm_l.
	* wcsmbs/wcscoll.c: Change for use in extended locale model.
	* wcsmbs/wcscoll_l.c: New file.  Implement __wcscoll_l function.
	* wcsmbs/wcsxfrm_l.c: New file.  Implement __wcsxfrm_l function.
	* wctype/Makefile (routines): Add wcextra, wcfuncs_l, iswctype_l,
	and towctrans_l.
	* wctype/cname-lookup.h: Prepare for use in extended locale model.
	* wctype/iswctype_l.c: New file.  Implement character classification
	functions for use with locale objects.
	* wctype/wctype.h: Declare functions for use with locale objects.
	* wctype/towctrans_l.c: New file.  Implement __towctrans_l function
	for use with locale objects.
	* wctype/wcfuncs_l.c: New file.  Implement wide character
	classification functions for use with locale objects.
	* wctype/wcextra.c: New file.  Implement real functions for
	non-standard classification functions.

	* elf/ldd.bash.in: Don't use --data-relocs and --function-relocs
	parameters to ld.so.  Use environment variables.
	* elf/ldd.sh.in: Likewise.
	* elf/rtld.c: Remove handling of --data-relocs and --function-relocs
	options.  Instead read environment variables.

	* elf/link.h (receiver_fct): Add new argument to take error code.
	* elf/dl-error.c (_dl_signal_error): Call receiver function with
	another argument.

	* elf/dl-object.c (_dl_new_object): Create new object with list of
	names in l_libname member.
	* elf/dl-load.c (_dl_map_object_from_fd): Add name which was used to
	find to object to the list in the link_map variable.
	(_dl_map_object): Use _dl_does_name_match_p to compare with all
	available names of the object.
	Optimize handling of LD_LIBRARY_PATH a bit.
	* elf/rtld.c: Initialize l_libname member of _dl_rtld_map.

	* elf/dl-lookup.c (_dl_elf_hash): Optimize function.

	* elf/Makefile (routines): Add dl-version.
	* elf/link.h (hash_name_pair): New type.  Group pointer to string
	and its hash value.
	(struct link_map): Change l_libname member to be a list of names,
	not a single pointer to a name.
	Add new members l_nversions and l_versions.
	(_dl_does_name_match_p): New function to test for all names of an
	object.
	Add prototypes for new lookup and versioning functions.
	* elf/dl-lookup.c (do_lookup): Add new argument and handle case
	when versioned symbol is requested.
	(_dl_lookup_symbol): Call do_lookup with another argument.
	(_dl_lookup_symbol_skip): Likewise.
	(_dl_lookup_versioned_symbol): New function.  Handle lookup of
	versioned symbol.
	(_dl_lookup_versioned_symbol_skip): Likewise, similar to
	_dl_lookup_symbol_skip.
	* elf/dl-reloc.c (RESOLVE): Call _dl_lookup_versioned_symbol or
	_dl_lookup_symbol depending on availability of version information.
	* elf/dl-runtime.c (RESOLVE): Likewise.
	(fixup): Call elf_machine_relplt with additional argument to point
	to versioning information if available.
	* elf/do-rel.h (elf_dynamic_do_rel): Likewise.
	* elf/dl-open.c (_dl_open): Call _dl_check_map_versions to check
	for correct versions.
	* elf/dl-version.c: New file.  Check library versions and extract
	version information for easier access.
	* elf/dlfcn.h [__USE_GNU]: Add prototype for dlvsym.
	* elf/dlvsym.c: New file.  Implementation of function similar to
	dlsym, but looks for versioned symbol.
	* elf/elf.h: Add types and macros for versioning.
	* elf/rtld.c (dl_main): Check availability of needed versions.
	* sysdeps/alpha/dl-machine.h (elf_machine_rela): Add additional
	argument for version information.  Call RESOLVE with additional
	argument.
	* sysdeps/i386/dl-machine.h: Likewise.
	* sysdeps/m68k/dl-machine.h: Likewise.
	* sysdeps/mips/dl-machine.h: Likewise.

	* elf/dlerror.c: Change comment to align with guidelines.
	* elf/dlopen.c: Likewise.
	* elf/dlsym.c: Likewise.

	* locale/programs/localedef.c: Implement --quiet option.
	* locale/programs/charset.h: Declare be_quiet variable.
	* locale/programs/locfile.h: Likewise.
	* locale/programs/charmap.c: Don't print warnings if quiet option
	was given.
	* locale/programs/ld-collate.c: Likewise.
	* locale/programs/ld-ctype.c: Likewise.
	* locale/programs/ld-messages.c: Likewise.
	* locale/programs/ld-monetary.c: Likewise.
	* locale/programs/ld-numeric.c: Likewise.
	* locale/programs/ld-time.c: Likewise.
	* locale/programs/locfile.c: Likewise.

	* Makefile (subdirs): Add argp.

	* catgets/catgets.c (catopen): Little code improvement.

	* posix/execl.c: Remove restriction to 1024 arguments.
	* posix/execle.c: Likewise.
	* posix/execlp.c: Likewise.

	* posix/getopt.c [_LIBC]: Define global objects with __ prefix
	and make regular names weak aliases.
	* posix/getopt1.c: Likewise.
	* posix/getopt.h [_LIBC]: Provide prototypes and declarations for
	__ protected forms.

	* posix/unistd.h: Add prototype for __sleep.
	* sysdeps/mach/sleep.c: Make sleep weak alias of __sleep.
	* sysdeps/posix/sleep.c: Likewise.
	* sysdeps/stub/sleep.c: Likewise.
	* sysdeps/unix/sysv/linux/sleep.c: Likewise.

	* ctype/ctype-info.c: Update copyright.
	* ctype/ctype.c: Likewise.
	* ctype/test_ctype.c: Likewise.
	* dirent/alphasort.c: Likewise.
	* dirent/list.c: Likewise.
	* gmon/bb_exit_func.c: Likewise.
	* grp/fgetgrent.c: Likewise.
	* grp/getgrent.c: Likewise.
	* grp/getgrent_r.c: Likewise.
	* grp/getgrgid.c: Likewise.
	* grp/getgrgid_r.c: Likewise.
	* grp/getgrnam.c: Likewise.
	* grp/getgrnam_r.c: Likewise.
	* hurd/alloc-fd.c: Likewise.
	* hurd/catch-exc.c: Likewise.
	* hurd/ctty-input.c: Likewise.
	* hurd/ctty-output.c: Likewise.
	* hurd/dtable.c: Likewise.
	* hurd/fchroot.c: Likewise.
	* hurd/fd-close.c: Likewise.
	* hurd/fd-read.c: Likewise.
	* hurd/fd-write.c: Likewise.
	* hurd/fopenport.c: Likewise.
	* hurd/get-host.c: Likewise.
	* hurd/getdport.c: Likewise.
	* hurd/getuids.c: Likewise.
	* hurd/getumask.c: Likewise.
	* hurd/hurd-raise.c: Likewise.
	* hurd/hurd.h: Likewise.
	* hurd/hurdauth.c: Likewise.
	* hurd/hurdexec.c: Likewise.
	* hurd/hurdhost.h: Likewise.
	* hurd/hurdid.c: Likewise.
	* hurd/hurdinit.c: Likewise.
	* hurd/hurdioctl.c: Likewise.
	* hurd/hurdkill.c: Likewise.
	* hurd/hurdlookup.c: Likewise.
	* hurd/hurdmsg.c: Likewise.
	* hurd/hurdpid.c: Likewise.
	* hurd/hurdports.c: Likewise.
	* hurd/hurdprio.c: Likewise.
	* hurd/hurdrlimit.c: Likewise.
	* hurd/hurdsock.c: Likewise.
	* hurd/hurdstartup.c: Likewise.
	* hurd/hurdstartup.h: Likewise.
	* hurd/intern-fd.c: Likewise.
	* hurd/intr-msg.c: Likewise.
	* hurd/intr-rpc.defs: Likewise.
	* hurd/intr-rpc.h: Likewise.
	* hurd/msgportdemux.c: Likewise.
	* hurd/new-fd.c: Likewise.
	* hurd/openport.c: Likewise.
	* hurd/pid2task.c: Likewise.
	* hurd/port-cleanup.c: Likewise.
	* hurd/port2fd.c: Likewise.
	* hurd/ports-get.c: Likewise.
	* hurd/ports-set.c: Likewise.
	* hurd/privports.c: Likewise.
	* hurd/report-wait.c: Likewise.
	* hurd/set-host.c: Likewise.
	* hurd/setauth.c: Likewise.
	* hurd/setuids.c: Likewise.
	* hurd/siginfo.c: Likewise.
	* hurd/sigunwind.c: Likewise.
	* hurd/task2pid.c: Likewise.
	* hurd/thread-cancel.c: Likewise.
	* hurd/thread-self.c: Likewise.
	* hurd/vpprintf.c: Likewise.
	* hurd/hurd/fd.h: Likewise.
	* hurd/hurd/id.h: Likewise.
	* hurd/hurd/ioctl.h: Likewise.
	* hurd/hurd/lookup.h: Likewise.
	* hurd/hurd/port.h: Likewise.
	* hurd/hurd/resource.h: Likewise.
	* hurd/hurd/threadvar.h: Likewise.
	* hurd/hurd/userlink.h: Likewise.
	* inet/ether_aton.c: Likewise.
	* inet/ether_aton_r.c: Likewise.
	* inet/ether_ntoa.c: Likewise.
	* inet/ether_ntoa_r.c: Likewise.
	* inet/gethstbyad.c: Likewise.
	* inet/gethstbyad_r.c: Likewise.
	* inet/gethstent.c: Likewise.
	* inet/getnetbyad.c: Likewise.
	* inet/getnetbyad_r.c: Likewise.
	* inet/getnetbynm.c: Likewise.
	* inet/getnetbynm_r.c: Likewise.
	* inet/getnetent.c: Likewise.
	* inet/getnetent_r.c: Likewise.
	* inet/getproto.c: Likewise.
	* inet/getproto_r.c: Likewise.
	* inet/getprtent.c: Likewise.
	* inet/getprtent_r.c: Likewise.
	* inet/getprtname.c: Likewise.
	* inet/getrpcbyname.c: Likewise.
	* inet/getrpcbyname_r.c: Likewise.
	* inet/getrpcbynumber.c: Likewise.
	* inet/getrpcbynumber_r.c: Likewise.
	* inet/getrpcent.c: Likewise.
	* inet/getrpcent_r.c: Likewise.
	* inet/getservent.c: Likewise.
	* inet/getservent_r.c: Likewise.
	* inet/getsrvbynm.c: Likewise.
	* inet/getsrvbynm_r.c: Likewise.
	* inet/getsrvbypt.c: Likewise.
	* inet/getsrvbypt_r.c: Likewise.
	* inet/herrno.c: Likewise.
	* inet/netgroup.h: Likewise.
	* ient/netinet/ether.h: Likewise.
	* intl/bindtextdom.c: Likewise.
	* intl/dcgettext.c: Likewise.
	* intl/dgettext.c: Likewise.
	* intl/gettext.c: Likewise.
	* intl/gettext.h: Likewise.
	* intl/gettextP.h: Likewise.
	* intl/hash-string.h: Likewise.
	* intl/loadmsgcat.c: Likewise.
	* intl/localealias.c: Likewise.
	* intl/textdomain.c: Likewise.
	* io/creat.c: Likewise.
	* io/getdirname.c: Likewise.
	* io/lockf.c: Likewise.
	* io/pwd.c: Likewise.
	* io/test-utime.c: Likewise.
	* locale/categories.def: Likewise.
	* locale/codeset_name.c: Likewise.
	* locale/lc-collate.c: Likewise.
	* locale/lc-ctype.c: Likewise.
	* locale/lc-messages.c: Likewise.
	* locale/lc-monetary.c: Likewise.
	* locale/lc-numeric.c: Likewise.
	* locale/lc-time.c: Likewise.
	* locale/loadlocale.c: Likewise.
	* locale/localeconv.c: Likewise.
	* locale/nl_langinfo.c: Likewise.
	* locale/setlocale.c: Likewise.
	* locale/strlen-hash.h: Likewise.
	* locale/programs/charmap-kw.gperf: Likewise.
	* locale/programs/charmap-kw.h: Likewise.
	* locale/programs/charset.c: Likewise.
	* locale/programs/ld-ctype.c: Likewise.
	* locale/programs/ld-messages.c: Likewise.
	* locale/programs/ld-monetary.c: Likewise.
	* locale/programs/linereader.h: Likewise.
	* locale/programs/locale-spec.c: Likewise.
	* locale/programs/locales.h: Likewise.
	* locale/programs/locfile-kw.gperf: Likewise.
	* locale/programs/locfile-kw.h: Likewise.
	* locale/programs/locfile-token.h: Likewise.
	* locale/programs/simple-hash.h: Likewise.
	* locale/programs/stringtrans.c: Likewise.
	* locale/programs/stringtrans.h: Likewise.
	* login/logout.c: Likewise.
	* mach/bootprivport.c: Likewise.
	* mach/devstream.c: Likewise.
	* mach/hello.c: Likewise.
	* mach/mach.h: Likewise.
	* mach/mach_init.c: Likewise.
	* mach/mach_init.h: Likewise.
	* mach/mig-alloc.c: Likewise.
	* mach/mig-dealloc.c: Likewise.
	* mach/mutex-init.c: Likewise.
	* mach/mutex-solid.c: Likewise.
	* mach/setup-thread.c: Likewise.
	* mach/spin-lock.h: Likewise.
	* mach/spin-solid.c: Likewise.
	* mach/mach/mig_support.h: Likewise.
	* md5-crypt/md5-crypt.c: Likewise.
	* misc/nlist.h: Likewise.
	* nss/nss_files/files-ether.c: Likewise.
	* posix/confstr.c: Likewise.
	* posix/execl.c: Likewise.
	* posix/execle.c: Likewise.
	* posix/execlp.c: Likewise.
	* posix/execv.c: Likewise.
	* posix/execvp.c: Likewise.
	* posix/fnmatch.c: Likewise.
	* posix/getopt.c: Likewise.
	* posix/getopt.h: Likewise.
	* posix/getopt1.c: Likewise.
	* posix/id.c: Likewise.
	* posix/regex.c: Likewise.
	* posix/setpgrp.c: Likewise.
	* posix/unistd.h: Likewise.
	* posix/wordexp.c: Likewise.
	* pwd/fgetpwent.c: Likewise.
	* pwd/getpwent.c: Likewise.
	* pwd/getpwent_r.c: Likewise.
	* pwd/getpwnam.c: Likewise.
	* pwd/getpwnam_r.c: Likewise.
	* pwd/getpwuid.c: Likewise.
	* pwd/getpwuid_r.c: Likewise.
	* pwd/putpwent.c: Likewise.
	* resolv/gethnamaddr.c: Likewise.
	* resolv/res_hconf.c: Likewise.
	* resolv/res_hconf.h: Likewise.
	* setjmp/longjmp.c: Likewise.
	* setjmp/sigjmp.c: Likewise.
	* setjmp/tst-setjmp.c: Likewise.
	* stdio/clearerr.c: Likewise.
	* stdio/ferror.c: Likewise.
	* stdio/fgetc.c: Likewise.
	* stdio/fgetpos.c: Likewise.
	* stdio/fgets.c: Likewise.
	* stdio/fileno.c: Likewise.
	* stdio/fmemopen.c: Likewise.
	* stdio/fopen.c: Likewise.
	* stdio/fopncook.c: Likewise.
	* stdio/fputc.c: Likewise.
	* stdio/fputs.c: Likewise.
	* stdio/fread.c: Likewise.
	* stdio/freopen.c: Likewise.
	* stdio/fseek.c: Likewise.
	* stdio/fsetpos.c: Likewise.
	* stdio/ftell.c: Likewise.
	* stdio/fwrite.c: Likewise.
	* stdio/getchar.c: Likewise.
	* stdio/getdelim.c: Likewise.
	* stdio/gets.c: Likewise.
	* stdio/glue.c: Likewise.
	* stdio/internals.c: Likewise.
	* stdio/linewrap.c: Likewise.
	* stdio/linewrap.h: Likewise.
	* stdio/memstream.c: Likewise.
	* stdio/newstream.c: Likewise.
	* stdio/putchar.c: Likewise.
	* stdio/puts.c: Likewise.
	* stdio/rewind.c: Likewise.
	* stdio/setbuf.c: Likewise.
	* stdio/setbuffer.c: Likewise.
	* stdio/setlinebuf.c: Likewise.
	* stdio/setvbuf.c: Likewise.
	* stdio/ungetc.c: Likewise.
	* stdio/vasprintf.c: Likewise.
	* stdio/vscanf.c: Likewise.
	* stdio/vsnprintf.c: Likewise.
	* stdio/vsprintf.c: Likewise.
	* stdio/vsscanf.c: Likewise.
	* stdio-common/asprintf.c: Likewise.
	* stdio-common/dprintf.c: Likewise.
	* stdio-common/errnobug.c: Likewise.
	* stdio-common/fprintf.c: Likewise.
	* stdio-common/getline.c: Likewise.
	* stdio-common/getw.c: Likewise.
	* stdio-common/perror.c: Likewise.
	* stdio-common/psignal.c: Likewise.
	* stdio-common/putw.c: Likewise.
	* stdio-common/reg-printf.c: Likewise.
	* stdio-common/scanf.c: Likewise.
	* stdio-common/snprintf.c: Likewise.
	* stdio-common/sprintf.c: Likewise.
	* stdio-common/tempnam.c: Likewise.
	* stdio-common/test_rdwr.c: Likewise.
	* stdio-common/tst-fileno.c: Likewise.
	* stdio-common/tst-printf.c: Likewise.
	* stdio-common/tstgetln.c: Likewise.
	* stdio-common/vprintf.c: Likewise.
	* stdlib/drand48.c: Likewise.
	* stdlib/drand48_r.c: Likewise.
	* stdlib/erand48.c: Likewise.
	* stdlib/erand48_r.c: Likewise.
	* stdlib/exit.h: Likewise.
	* stdlib/strtoq.c: Likewise.
	* stdlib/strtoul.c: Likewise.
	* stdlib/strtouq.c: Likewise.
	* stdlib/test-canon.c: Likewise.
	* stdlib/testdiv.c: Likewise.
	* stdlib/testrand.c: Likewise.
	* string/argz-append.c: Likewise.
	* string/argz-count.c: Likewise.
	* string/argz-create.c: Likewise.
	* string/argz-ctsep.c: Likewise.
	* string/argz-delete.c: Likewise.
	* string/argz-extract.c: Likewise.
	* string/argz-insert.c: Likewise.
	* string/argz-next.c: Likewise.
	* string/argz-stringify.c: Likewise.
	* string/basename.c: Likewise.
	* string/envz.c: Likewise.
	* string/memfrob.c: Likewise.
	* string/strcoll.c: Likewise.
	* string/strdup.c: Likewise.
	* string/string.h: Likewise.
	* string/strndup.c: Likewise.
	* string/strnlen.c: Likewise.
	* string/strsignal.c: Likewise.
	* string/strxfrm.c: Likewise.
	* string/test-ffs.c: Likewise.
	* string/testcopy.c: Likewise.
	* sysdeps/generic/enbl-secure.c: Likewise.
	* sysdeps/generic/memcopy.h: Likewise.
	* sysdeps/generic/stpncpy.c: Likewise.
	* sysdeps/generic/strcasecmp.c: Likewise.
	* sysdeps/generic/strcat.c: Likewise.
	* sysdeps/generic/strchr.c: Likewise.
	* sysdeps/generic/strcpy.c: Likewise.
	* sysdeps/generic/strcspn.c: Likewise.
	* sysdeps/generic/strlen.c: Likewise.
	* sysdeps/generic/strncase.c: Likewise.
	* sysdeps/generic/strncat.c: Likewise.
	* sysdeps/generic/strncpy.c: Likewise.
	* sysdeps/generic/strpbrk.c: Likewise.
	* sysdeps/generic/strsep.c: Likewise.
	* sysdeps/generic/strspn.c: Likewise.
	* sysdeps/generic/strstr.c: Likewise.
	* sysdeps/generic/strtok.c: Likewise.
	* sysdeps/generic/strtok_r.c: Likewise.
	* sysdeps/mach/sleep.c: Likewise.
	* sysdeps/posix/sleep.c: Likewise.
	* sysdeps/stub/sleep.c: Likewise.
	* time/date.c: Likewise.
	* time/test_time.c: Likewise.
	* wcsmbs/wmemcpy.c: Likewise.
	* wctye/test_wctype.c: Likewise.
	* wctye/towctrans.c: Likewise.
	* wctye/wcfuncs.c: Likewise.
	* wctye/wctrans.c: Likewise.

1997-02-13 22:15  Miles Bader  <miles@gnu.ai.mit.edu>

	* argp/Makefile: New file.
	* argp/argp.h: Likewise.
	* argp/argp-ba.c: Likewise.
	* argp/argp-fmtstream.c: Likewise.
	* argp/argp-fmtstream.h: Likewise.
	* argp/argp-fs-xinl.c: Likewise.
	* argp/argp-help.c: Likewise.
	* argp/argp-namefrob.h: Likewise.
	* argp/argp-parse.c: Likewise.
	* argp/argp-pv.c: Likewise.
	* argp/argp-pvh.c: Likewise.
	* argp/argp-test.c: Likewise.
	* argp/argp-xinl.c: Likewise.

	* libio/_G_config.h: Make sure wint_t is also defined for old gcc
1997-02-09 04:35  Ulrich Drepper  <drepper@cygnus.com>

	* stdio-common/_itoa.h: Update copyright.

1 files changed, 144 insertions, 15 deletions

diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c
index 1000a52e0d..06d1d09b90 100644
--- a/elf/dl-lookup.c
+++ b/elf/dl-lookup.c
@@ -1,5 +1,5 @@
 /* Look up a symbol in the loaded objects.
-   Copyright (C) 1995, 1996 Free Software Foundation, Inc.
+   Copyright (C) 1995, 1996, 1997 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
@@ -22,6 +22,9 @@
 #include <assert.h>
 #include <string.h>
 
+#include "../stdio-common/_itoa.h"
+
+#define VERSTAG(tag)	(DT_NUM + DT_PROCNUM + DT_VERSIONTAGIDX (tag))
 
 struct sym_val
   {
@@ -30,22 +33,46 @@ struct sym_val
   };
 
 
-/* This is the hashing function specified by the ELF ABI.  */
+/* This is the hashing function specified by the ELF ABI.  In the
+   first five operations now overflow is possible so we optimized it a
+   bit.  */
 static inline unsigned
 _dl_elf_hash (const char *name)
 {
   unsigned long int hash = 0;
-  while (*name != '\0')
+  if (*name != '\0')
     {
-      unsigned long int hi;
       hash = (hash << 4) + *name++;
-      hi = hash & 0xf0000000;
-      if (hi != 0)
+      if (*name != '\0')
 	{
-	  hash ^= hi >> 24;
-	  /* The ELF ABI says `hash &= ~hi', but this is equivalent
-	     in this case and on some machines one insn instead of two.  */
-	  hash ^= hi;
+	  hash = (hash << 4) + *name++;
+	  if (*name != '\0')
+	    {
+	      hash = (hash << 4) + *name++;
+	      if (*name != '\0')
+		{
+		  hash = (hash << 4) + *name++;
+		  if (*name != '\0')
+		    {
+		      hash = (hash << 4) + *name++;
+		      while (*name != '\0')
+			{
+			  unsigned long int hi;
+			  hash = (hash << 4) + *name++;
+			  hi = hash & 0xf0000000;
+			  if (hi != 0)
+			    {
+			      hash ^= hi >> 24;
+			      /* The ELF ABI says `hash &= ~hi', but
+				 this is equivalent in this case and
+				 on some machines one insn instead of
+				 two.  */
+			      hash ^= hi;
+			    }
+			}
+		    }
+		}
+	    }
 	}
     }
   return hash;
@@ -57,7 +84,8 @@ static inline ElfW(Addr)
 do_lookup (const char *undef_name, unsigned long int hash,
 	   const ElfW(Sym) **ref, struct sym_val *result,
 	   struct link_map *list[], size_t i, size_t n,
-	   const char *reference_name, struct link_map *skip, int flags)
+	   const char *reference_name, const hash_name_pair *version,
+	   struct link_map *skip, int flags)
 {
   struct link_map *map;
 
@@ -65,6 +93,7 @@ do_lookup (const char *undef_name, unsigned long int hash,
     {
       const ElfW(Sym) *symtab;
       const char *strtab;
+      const ElfW(Half) *verstab;
       ElfW(Symndx) symidx;
 
       map = list[i];
@@ -79,6 +108,12 @@ do_lookup (const char *undef_name, unsigned long int hash,
 
       symtab = ((void *) map->l_addr + map->l_info[DT_SYMTAB]->d_un.d_ptr);
       strtab = ((void *) map->l_addr + map->l_info[DT_STRTAB]->d_un.d_ptr);
+      if (version != NULL
+	  && map->l_nversions > 0 && map->l_info[VERSTAG (DT_VERSYM)] != NULL)
+	verstab = ((void *) map->l_addr
+		   + map->l_info[VERSTAG (DT_VERSYM)]->d_un.d_ptr);
+      else
+	verstab = NULL;
 
       /* Search the appropriate hash bucket in this object's symbol table
 	 for a definition for the same symbol name.  */
@@ -108,6 +143,15 @@ do_lookup (const char *undef_name, unsigned long int hash,
 	    /* Not the symbol we are looking for.  */
 	    continue;
 
+	  if (verstab != NULL)
+	    {
+	      /* We can match the version information.  */
+	      ElfW(Half) ndx = verstab[symidx] & 0x7fff;
+	      if (map->l_versions[ndx].hash != version->hash
+		  || strcmp (map->l_versions[ndx].name, version->name))
+	      continue;
+	    }
+
 	  switch (ELFW(ST_BIND) (sym->st_info))
 	    {
 	    case STB_GLOBAL:
@@ -155,14 +199,14 @@ _dl_lookup_symbol (const char *undef_name, const ElfW(Sym) **ref,
   for (scope = symbol_scope; *scope; ++scope)
     if (do_lookup (undef_name, hash, ref, &current_value,
 		   (*scope)->l_searchlist, 0, (*scope)->l_nsearchlist,
-		   reference_name, NULL, flags))
+		   reference_name, NULL, NULL, flags))
       break;
 
   if (current_value.s == NULL &&
       (*ref == NULL || ELFW(ST_BIND) ((*ref)->st_info) != STB_WEAK))
     {
       /* We could find no value for a strong reference.  */
-      const char msg[] = "undefined symbol: ";
+      static const char msg[] = "undefined symbol: ";
       const size_t len = strlen (undef_name);
       char buf[sizeof msg + len];
       memcpy (buf, msg, sizeof msg - 1);
@@ -199,11 +243,96 @@ _dl_lookup_symbol_skip (const char *undef_name, const ElfW(Sym) **ref,
 
   if (! do_lookup (undef_name, hash, ref, &current_value,
 		   (*scope)->l_dupsearchlist, i, (*scope)->l_ndupsearchlist,
-		   reference_name, skip_map, flags))
+		   reference_name, NULL, skip_map, flags))
+    while (*++scope)
+      if (do_lookup (undef_name, hash, ref, &current_value,
+		     (*scope)->l_dupsearchlist, 0, (*scope)->l_ndupsearchlist,
+		     reference_name, NULL, skip_map, flags))
+	break;
+
+  *ref = current_value.s;
+  return current_value.a;
+}
+
+
+/* This function works like _dl_lookup_symbol but it takes an
+   additional arguement with the version number of the requested
+   symbol.
+
+   XXX We'll see whether we need this separate function.  */
+ElfW(Addr)
+_dl_lookup_versioned_symbol (const char *undef_name, const ElfW(Sym) **ref,
+			     struct link_map *symbol_scope[],
+			     const char *reference_name,
+			     const hash_name_pair *version, int flags)
+{
+  const unsigned long int hash = _dl_elf_hash (undef_name);
+  struct sym_val current_value = { 0, NULL };
+  struct link_map **scope;
+
+  /* Search the relevant loaded objects for a definition.  */
+  for (scope = symbol_scope; *scope; ++scope)
+    if (do_lookup (undef_name, hash, ref, &current_value,
+		   (*scope)->l_searchlist, 0, (*scope)->l_nsearchlist,
+		   reference_name, version, NULL, flags))
+      break;
+
+  if (current_value.s == NULL &&
+      (*ref == NULL || ELFW(ST_BIND) ((*ref)->st_info) != STB_WEAK))
+    {
+      /* We could find no value for a strong reference.  */
+      static const char msg1[] = "undefined symbol: ";
+      const size_t len = strlen (undef_name);
+      static const char msg2[] = ", version ";
+      const size_t verslen = strlen (version->name ?: "") + 1;
+      char buf[sizeof msg1 - 1 + len + sizeof msg2 - 1 + verslen];
+
+      memcpy (buf, msg1, sizeof msg1 - 1);
+      memcpy (&buf[sizeof msg1 - 1], undef_name, len + 1);
+      memcpy (&buf[sizeof msg1 - 1 + len], msg2, sizeof msg2 - 1);
+      memcpy (&buf[sizeof msg1 - 1 + len + sizeof msg2 - 1], version->name,
+	      verslen);
+      _dl_signal_error (0, reference_name, buf);
+    }
+
+  *ref = current_value.s;
+  return current_value.a;
+}
+
+
+/* Similar to _dl_lookup_symbol_skip but takes an additional argument
+   with the version we are looking for.  */
+ElfW(Addr)
+_dl_lookup_versioned_symbol_skip (const char *undef_name,
+				  const ElfW(Sym) **ref,
+				  struct link_map *symbol_scope[],
+				  const char *reference_name,
+				  const char *version_name,
+				  struct link_map *skip_map,
+				  int flags)
+{
+  const unsigned long int hash = _dl_elf_hash (undef_name);
+  struct sym_val current_value = { 0, NULL };
+  struct link_map **scope;
+  hash_name_pair version;
+  size_t i;
+
+  /* First convert the VERSION_NAME into a `hash_name_pair' value.  */
+  version.hash = _dl_elf_hash (version_name);
+  version.name = version_name;
+
+  /* Search the relevant loaded objects for a definition.  */
+  scope = symbol_scope;
+  for (i = 0; (*scope)->l_dupsearchlist[i] != skip_map; ++i)
+    assert (i < (*scope)->l_ndupsearchlist);
+
+  if (! do_lookup (undef_name, hash, ref, &current_value,
+		   (*scope)->l_dupsearchlist, i, (*scope)->l_ndupsearchlist,
+		   reference_name, &version, skip_map, flags))
     while (*++scope)
       if (do_lookup (undef_name, hash, ref, &current_value,
 		     (*scope)->l_dupsearchlist, 0, (*scope)->l_ndupsearchlist,
-		     reference_name, skip_map, flags))
+		     reference_name, &version, skip_map, flags))
 	break;
 
   *ref = current_value.s;