glibc/sysdeps/alpha/dl-machine.h
Ulrich Drepper c84142e8fe Update to 2.1.x development version
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.
1997-02-15 04:31:36 +00:00

415 lines
12 KiB
C

/* Machine-dependent ELF dynamic relocation inline functions. Alpha version.
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <rth@tamu.edu>.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* This was written in the absence of an ABI -- don't expect
it to remain unchanged. */
#ifndef dl_machine_h
#define dl_machine_h 1
#define ELF_MACHINE_NAME "alpha"
#include <assert.h>
#include <string.h>
/* Return nonzero iff E_MACHINE is compatible with the running host. */
static inline int
elf_machine_matches_host (Elf64_Word e_machine)
{
return e_machine == EM_ALPHA;
}
/* Return the link-time address of _DYNAMIC. The multiple-got-capable
linker no longer allocates the first .got entry for this. But not to
worry, no special tricks are needed. */
static inline Elf64_Addr
elf_machine_dynamic (void)
{
#ifndef NO_AXP_MULTI_GOT_LD
return (Elf64_Addr) &_DYNAMIC;
#else
register Elf64_Addr *gp __asm__ ("$29");
return gp[-4096];
#endif
}
/* Return the run-time load address of the shared object. */
static inline Elf64_Addr
elf_machine_load_address (void)
{
/* NOTE: While it is generally unfriendly to put data in the text
segment, it is only slightly less so when the "data" is an
instruction. While we don't have to worry about GLD just yet, an
optimizing linker might decide that our "data" is an unreachable
instruction and throw it away -- with the right switches, DEC's
linker will do this. What ought to happen is we should add
something to GAS to allow us access to the new GPREL_HI32/LO32
relocation types stolen from OSF/1 3.0. */
/* This code relies on the fact that BRADDR relocations do not
appear in dynamic relocation tables. Not that that would be very
useful anyway -- br/bsr has a 4MB range and the shared libraries
are usually many many terabytes away. */
Elf64_Addr dot;
long zero_disp;
asm("br %0, 1f\n\t"
".weak __load_address_undefined\n\t"
"br $0, __load_address_undefined\n"
"1:"
: "=r"(dot));
zero_disp = *(int *)dot;
zero_disp = (zero_disp << 43) >> 41;
return dot + 4 + zero_disp;
}
/* Set up the loaded object described by L so its unrelocated PLT
entries will jump to the on-demand fixup code in dl-runtime.c. */
static inline void
elf_machine_runtime_setup (struct link_map *l, int lazy)
{
Elf64_Addr plt;
extern void _dl_runtime_resolve (void);
if (l->l_info[DT_JMPREL] && lazy)
{
/* The GOT entries for the functions in the PLT have not been
filled in yet. Their initial contents are directed to the
PLT which arranges for the dynamic linker to be called. */
plt = l->l_addr + l->l_info[DT_PLTGOT]->d_un.d_ptr;
/* This function will be called to perform the relocation. */
*(Elf64_Addr *)(plt + 16) = (Elf64_Addr) &_dl_runtime_resolve;
/* Identify this shared object */
*(Elf64_Addr *)(plt + 24) = (Elf64_Addr) l;
}
}
/* This code is used in dl-runtime.c to call the `fixup' function
and then redirect to the address it returns. */
#define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ( \
"/* Trampoline for _dl_runtime_resolver */
.globl _dl_runtime_resolve
.ent _dl_runtime_resolve
_dl_runtime_resolve:
lda $sp, -168($sp)
.frame $sp, 168, $26
/* Preserve all registers that C normally doesn't. */
stq $26, 0($sp)
stq $0, 8($sp)
stq $1, 16($sp)
stq $2, 24($sp)
stq $3, 32($sp)
stq $4, 40($sp)
stq $5, 48($sp)
stq $6, 56($sp)
stq $7, 64($sp)
stq $8, 72($sp)
stq $16, 80($sp)
stq $17, 88($sp)
stq $18, 96($sp)
stq $19, 104($sp)
stq $20, 112($sp)
stq $21, 120($sp)
stq $22, 128($sp)
stq $23, 136($sp)
stq $24, 144($sp)
stq $25, 152($sp)
stq $29, 160($sp)
.mask 0x27ff01ff, -168
/* Set up our $gp */
br $gp, 0f
0: ldgp $gp, 0($gp)
.prologue 1
/* Set up the arguments for _dl_runtime_resolve. */
/* $16 = link_map out of plt0 */
ldq $16, 8($27)
/* $17 = offset of reloc entry */
mov $28, $17
/* Do the fixup */
bsr $26, fixup..ng
/* Move the destination address into position. */
mov $0, $27
/* Restore program registers. */
ldq $26, 0($sp)
ldq $0, 8($sp)
ldq $1, 16($sp)
ldq $2, 24($sp)
ldq $3, 32($sp)
ldq $4, 40($sp)
ldq $5, 48($sp)
ldq $6, 56($sp)
ldq $7, 64($sp)
ldq $8, 72($sp)
ldq $16, 80($sp)
ldq $17, 88($sp)
ldq $18, 96($sp)
ldq $19, 104($sp)
ldq $20, 112($sp)
ldq $21, 120($sp)
ldq $22, 128($sp)
ldq $23, 136($sp)
ldq $24, 144($sp)
ldq $25, 152($sp)
ldq $29, 160($sp)
/* Flush the Icache after having modified the .plt code. */
imb
/* Clean up and turn control to the destination */
lda $sp, 168($sp)
jmp $31, ($27)
.end _dl_runtime_resolve");
/* The PLT uses Elf64_Rela relocs. */
#define elf_machine_relplt elf_machine_rela
/* Initial entry point code for the dynamic linker.
The C function `_dl_start' is the real entry point;
its return value is the user program's entry point. */
#define RTLD_START asm ("\
.text
.globl _start
.ent _start
_start:
br $gp, 0f
0: ldgp $gp, 0($gp)
/* Pass pointer to argument block to _dl_start. */
mov $sp, $16
bsr $26, _dl_start..ng
.end _start
/* FALLTHRU */
.globl _dl_start_user
.ent _dl_start_user
_dl_start_user:
/* Save the user entry point address in s0. */
mov $0, $9
/* See if we were run as a command with the executable file
name as an extra leading argument. If so, adjust the stack
pointer to skip _dl_skip_args words. */
ldl $1, _dl_skip_args
beq $1, 0f
ldq $2, 0($sp)
subq $2, $1, $2
s8addq $1, $sp, $sp
stq $2, 0($sp)
/* Load _dl_default_scope[2] into s1 to pass to _dl_init_next. */
0: ldq $10, _dl_default_scope+16
/* Call _dl_init_next to return the address of an initializer
function to run. */
1: mov $10, $16
jsr $26, _dl_init_next
ldgp $gp, 0($26)
beq $0, 2f
mov $0, $27
jsr $26, ($0)
ldgp $gp, 0($26)
br 1b
2: /* Clear the startup flag. */
.set at
stl $31, _dl_starting_up
.set noat
/* Pass our finalizer function to the user in $0. */
lda $0, _dl_fini
/* Jump to the user's entry point. */
mov $9, $27
jmp ($9)
.end _dl_start_user");
/* Nonzero iff TYPE describes relocation of a PLT entry, so
PLT entries should not be allowed to define the value. */
#define elf_machine_pltrel_p(type) ((type) == R_ALPHA_JMP_SLOT)
/* The alpha never uses Elf64_Rel relocations. */
#define ELF_MACHINE_NO_REL 1
#endif /* !dl_machine_h */
#ifdef RESOLVE
/* Fix up the instructions of a PLT entry to invoke the function
rather than the dynamic linker. */
static inline void
elf_alpha_fix_plt(struct link_map *l,
const Elf64_Rela *reloc,
Elf64_Addr got_addr,
Elf64_Addr value)
{
const Elf64_Rela *rela_plt;
Elf64_Word *plte;
long edisp;
/* Recover the PLT entry address by calculating reloc's index into the
.rela.plt, and finding that entry in the .plt. */
rela_plt = (void *)(l->l_addr + l->l_info[DT_JMPREL]->d_un.d_ptr);
plte = (void *)(l->l_addr + l->l_info[DT_PLTGOT]->d_un.d_ptr + 32);
plte += 3 * (reloc - rela_plt);
/* Find the displacement from the plt entry to the function. */
edisp = (long)(value - (Elf64_Addr)&plte[3]) / 4;
if (edisp >= -0x100000 && edisp < 0x100000)
{
/* If we are in range, use br to perfect branch prediction and
elide the dependency on the address load. This case happens,
e.g., when a shared library call is resolved to the same library. */
int hi, lo;
hi = value - (Elf64_Addr)&plte[0];
lo = (short)hi;
hi = (hi - lo) >> 16;
/* Emit "ldah $27,H($27)" */
plte[0] = 0x277b0000 | (hi & 0xffff);
/* Emit "lda $27,L($27)" */
plte[1] = 0x237b0000 | (lo & 0xffff);
/* Emit "br $31,function" */
plte[2] = 0xc3e00000 | (edisp & 0x1fffff);
}
else
{
/* Don't bother with the hint since we already know the hint is
wrong. Eliding it prevents the wrong page from getting pulled
into the cache. */
int hi, lo;
hi = got_addr - (Elf64_Addr)&plte[0];
lo = (short)hi;
hi = (hi - lo) >> 16;
/* Emit "ldah $27,H($27)" */
plte[0] = 0x277b0000 | (hi & 0xffff);
/* Emit "ldq $27,L($27)" */
plte[1] = 0xa77b0000 | (lo & 0xffff);
/* Emit "jmp $31,($27)" */
plte[2] = 0x6bfb0000;
}
/* At this point, if we've been doing runtime resolution, Icache is dirty.
This will be taken care of in _dl_runtime_resolve. If instead we are
doing this as part of non-lazy startup relocation, that bit of code
hasn't made it into Icache yet, so there's nothing to clean up. */
}
/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
MAP is the object containing the reloc. */
static inline void
elf_machine_rela (struct link_map *map,
const Elf64_Rela *reloc,
const Elf64_Sym *sym,
const hash_name_pair *version)
{
Elf64_Addr * const reloc_addr = (void *)(map->l_addr + reloc->r_offset);
unsigned long const r_info = ELF64_R_TYPE (reloc->r_info);
#ifndef RTLD_BOOTSTRAP
/* This is defined in rtld.c, but nowhere in the static libc.a; make the
reference weak so static programs can still link. This declaration
cannot be done when compiling rtld.c (i.e. #ifdef RTLD_BOOTSTRAP)
because rtld.c contains the common defn for _dl_rtld_map, which is
incompatible with a weak decl in the same file. */
weak_extern (_dl_rtld_map);
#endif
/* We cannot use a switch here because we cannot locate the switch
jump table until we've self-relocated. */
if (r_info == R_ALPHA_RELATIVE)
{
#ifndef RTLD_BOOTSTRAP
/* Already done in dynamic linker. */
if (map != &_dl_rtld_map)
#endif
*reloc_addr += map->l_addr;
}
else if (r_info == R_ALPHA_NONE)
return;
else
{
Elf64_Addr loadbase, sym_value;
loadbase = RESOLVE (&sym, version,
r_info == R_ALPHA_JMP_SLOT ? DL_LOOKUP_NOPLT : 0);
sym_value = sym ? loadbase + sym->st_value : 0;
if (r_info == R_ALPHA_GLOB_DAT)
*reloc_addr = sym_value;
else if (r_info == R_ALPHA_JMP_SLOT)
{
*reloc_addr = sym_value;
elf_alpha_fix_plt (map, reloc, (Elf64_Addr) reloc_addr, sym_value);
}
else if (r_info == R_ALPHA_REFQUAD)
{
sym_value += *reloc_addr;
#ifndef RTLD_BOOTSTRAP
if (map == &_dl_rtld_map)
{
/* Undo the relocation done here during bootstrapping.
Now we will relocate anew, possibly using a binding
found in the user program or a loaded library rather
than the dynamic linker's built-in definitions used
while loading those libraries. */
const Elf64_Sym *const dlsymtab
= (void *)(map->l_addr + map->l_info[DT_SYMTAB]->d_un.d_ptr);
sym_value -= map->l_addr;
sym_value -= dlsymtab[ELF64_R_SYM(reloc->r_info)].st_value;
}
else
#endif
sym_value += reloc->r_addend;
*reloc_addr = sym_value;
}
else
assert (! "unexpected dynamic reloc type");
}
}
static inline void
elf_machine_lazy_rel (struct link_map *map, const Elf64_Rela *reloc)
{
Elf64_Addr * const reloc_addr = (void *)(map->l_addr + reloc->r_offset);
unsigned long const r_info = ELF64_R_TYPE (reloc->r_info);
if (r_info == R_ALPHA_JMP_SLOT)
{
/* Perform a RELATIVE reloc on the .got entry that transfers
to the .plt. */
*reloc_addr += map->l_addr;
}
else if (r_info == R_ALPHA_NONE)
return;
else
assert (! "unexpected PLT reloc type");
}
#endif /* RESOLVE */