Implemented runtime dynamic linker to support ELF shared libraries.
* elf/Makefile: Added rules to make ld.so and libdl.
* elf/dl-error.c: New file.
* elf/dl-fini.c: New file.
* elf/dl-init.c: New file.
* elf/dl-load.c: New file.
* elf/dl-lookup.c: New file.
* elf/dl-object.c: New file.
* elf/dl-reloc.c: New file.
* elf/dlclose.c: New file.
* elf/dlerror.c: New file.
* elf/dlopen.c: New file.
* elf/dlsym.c: New file.
* elf/dynamic-link.h: New file.
* elf/link.h: New file.
* elf/rtld.c: New file.
Mon May 1 18:48:30 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* Makerules (LDFLAGS-c.so): Add -interp and -e switches to make
libc.so runnable.
* version.c (__libc_print_version): Add "et al" and missing NL to
author credit.
* mach/Machrules [interface-library]
(LDFLAGS-$(interface-library:lib%=%.so)): New variable, set to
-nostdlib.
* sysdeps/mach/hurd/fork.c: Subfunction `unlockss' removed. Lock
_hurd_siglock only around initial task creation in parent. Use
_hurd_critical_section_unlock at end. Handle dead name rights
properly, and deal with a send right dying while we try to copy
it. For the time being, use assert_perror for kernel and proc RPC
failures.
Fri Apr 21 01:10:15 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* extra-lib.mk: Don't include $(o-iterator); construct it by hand
using $(object-suffixes-$(lib)) instead.
* sysdeps/mach/hurd/Makefile (LDLIBS-c.so): New variable.
* Makerules (lib%.so: lib%_pic.a): Pass $(LDFLAGS-$(notdir $*).so).
(LDFLAGS-c.so): New variable.
* resolv/res_init.c (res_init): Don't clobber _res.options with
RES_DEFAULT. If RES_INIT is clear, OR in RES_DEFAULT.
* hurd/hurd.h: Declare _hurd_startup.
* hurd/hurdstartup.c: New file.
* hurd/Makefile (routines): Add hurdstartup.
* Makerules (+depfiles): Translate %.so to %.o in $(extra-objs).
* malloc/free.c [emacs] (__malloc_safe_bcopy): Define to safe_bcopy.
* malloc/realloc.c (__malloc_safe_bcopy): Undefine before defining.
* malloc/free.c (memmove, __malloc_safe_bcopy): Do include these
#ifdef emacs, but only #ifndef memmove.
* malloc/realloc.c [emacs] (__malloc_safe_bcopy): Just #define to
safe_bcopy.
(memmove): Define only if undefined.
* stdio/_itoa.h (_EXTERN_INLINE): Define if undefined.
(_itoa): Use it in defn.
* sysdeps/mach/hurd/i386/trampoline.c: Add a link to
SS->active_resources, so that _hurdsig_longjmp_from_handler will
be called when a longjmp unwinds the signal frame.
* sysdeps/mach/hurd/i386/sigreturn.c: Remove the link on the
SS->active_resources chain added by _hurd_setup_sighandler.
* hurd/sigunwind.c: New file.
* hurd/Makefile (sig): Add sigunwind.
* Makerules (lib%.so: lib%_pic.a): Remove dir name from $*.
* MakeTAGS (tags-sources): Include $(all-dist).
[subdir] (all-dist): Define to $(distribute).
parent objdirs.
* extra-lib.mk (object-suffixes-$(lib)): New variable, produced by
filtering out $($(lib)-inhibit-o); use that instead of
$(object-suffixes) in all the other variables.
(lib-noranlib): Depend on $(install-lib) in objdir.
(common-mostlyclean): Remove $(install-lib) and stub-$(subdir)
from objdir. Don't remove TAGS; it comes in the distribution.
* malloc/malloc.c (morecore): Save errno around call to
_realloc_internal. Don't account for the additional new blocks of
the info table itself when choosing the new table size for the
first crack; if it succeeds, the new blocks will have been found
in existing free space already described by the existing info
table.
Changes from Germano Caronni <caronni@tik.ethz.ch>:
Changes from Germano Caronni <caronni@tik.ethz.ch>:
* sunrpc/Makefile (install-lib): Variable removed.
(rpcsvc-objs): Variable removed.
(extra-objs): Don't include $(rpcsvc-objs).
(extra-libs): New variable, contains librpcsvc.
(librpcsvc-routines): New variable.
(librpcsvc-inhibit-o): New variable, contains .so.
(omit-deps): Set this to $(librpcsvc-routines).
($(objpfx)rpcgen): Don't use $(libc.a).
(lib, $(objpfx)librpcsvc.a): Targets removed.
* o-iterator.mk, extra-lib.mk: New files.
* Makerules (o-iterator): New variable.
[extra-libs]: Include extra-lib.mk to generate rules for each word
of $(extra-libs).
* Makefile (distribute): Add extra-lib.mk, o-iterator.mk.
(IMPLICIT_ONE, *_MAX_10_EXP_LOG): Macros removed; no longer needed.
* stdio/fpioconst.c, stdio/fpioconst.h: Don't use
LDBL_MAX_10_EXP_LOG; LAST_POW10 defines the maximal available
exponent.
* locale/C-ctype.c: New correct data generated by drepper.
* Rules: Don't use $(libc.a).
Parsing of grouped numbers contributed by Ulrich Drepper.
* stdlib/strtol.c (__strtol_internal): Renamed from strtol. Take
new flag arg; if nonzero, parse locale-dependent thousands
grouping and interpret only the prefix that is correctly grouped.
(strtol): Define this to call _strtol_internal with zero for the flag.
Use a weak symbol for the definition.
* stdlib/strtod.c (strtod, __strtod_internal): Likewise.
Check for the exponent of the number overflowing the float format.
* stdlib/stdlib.h (__strtof, __strtold): Declarations removed.
(__strto{f,d,ld,l,ul,q,uq}_internal): Declare these functions.
[__OPTIMIZE__]: Define inline functions calling those.
* stdlib/grouping.h: New file, written by drepper.
* stdlib/Makefile (distribute): Add grouping.h.
* stdio/vfscanf.c: Grok %' modifier to numeric conversions. Call
__strtoX_internal with the grouping flag set iff the modifier is
present.
Wed Mar 15 00:40:54 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* sysdeps/generic/memchr.c: Fix typos: limit.h -> limits.h.
* mach/Machrules: Produce static deps for all object flavors.
[interface-library]: Remove all these variables and rules.
($(interface-library)-routines): Define this variable.
(extra-libs): Append $(interface-library) to this.
* mach/Makefile (interface-library): Omit .a suffix.
* hurd/Makefile: Likewise.
Tue Mar 14 23:40:31 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* stdio/internals.c (flushbuf): If !FLUSH_ONLY, don't skip out
early if no new data in buffer after priming.
* Makerules (object-suffixes, libtypes): Move all these variables
to Makeconfig.
* Makeconfig (object-suffixes, libtypes): Moved here from Makerules.
* Makerules (build-extra-lib): New canned sequence.
* sysdeps/mach/hurd/euidaccess.c: Include fcntl.h. Declare ERR;
fix uses of FILE and PORT. Remove bogus weak alias for `access'.
* sysdeps/mach/hurd/dirfd.c: Include hurd/fd.h and errno.h.
Add missing semicolon.
* sysdeps/mach/hurd/opendir.c: Include hurd/fd.h. Use a `struct
hurd_fd *' temp var, since DIRP->__fd is a `void *'.
* sysdeps/mach/hurd/readdir.c: Include hurd/fd.h.
* stdlib/wcstombs.c: #if 0 out code for non-ASCII chars until the
locale data format is implemented.
* sysdeps/mach/hurd/i386/trampoline.c (_hurd_setup_sighandler):
Pass &__sigreturn on the stack to the trampoline code, so it is
not position-dependent.
* stdio/printf_fp.c (NDEBUG): Define this to disable assert.
Don't include <stdarg.h>.
(__printf_fp): Last arg ARGS is now `const void **const';
dereference ARGS[0] instead of using va_arg.
* locale/setlocale.c: In LC_ALL case, initialize CATEGORY before
loop to install data.
* locale/loadlocale.c (_nl_category_num_items): Use _NL_ITEM_INDEX
to extract number from item code.
(_nl_load_locale): Close the descriptor when finished.
* malloc/realloc.c (_realloc_internal): Call _malloc_internal in
place of malloc.
* time/tzfile.c (__tzfile_default): Initialize RULE_STDOFF to zero.
* Makerules (libtypes, object-suffixes): New variables.
(libtype.*, CFLAGS-*, CPPFLAGS-*): New variables for each object
suffix.
(CFLAGS, CPPFLAGS): Append $(C{,CPP}FLAGS-$(suffix $@)).
(%.so, %.po, %.go): New compilation rules for %.S, %.s, %.c.
(close-check-inhibit-asm): Append a semicolon.
(sysd-rules): Generate rules for each object suffix.
(compile.S, compile.c): Always assume gcc.
(OUTPUT_OPTION): Define unconditionally.
(+make-deps): In generated rule, produce a dependent for each
object suffix.
(.SUFFIXES): Add $(object-suffixes) in place of .o.
(.PRECIOUS): Make all suffix flavors precious.
($(libc.a)): Target removed.
(lib): Depend on each enabled libtype.
(libobjs, objects, objs): Depend on all the enabled object flavors.
(lib%.a): New pattern rule.
[$(build-shared)=yes] (lib%.so: lib%_pic.a): New pattern rule.
(stamp-$(subdir)): Rewritten to a pattern rule for stamp.%-$(subdir)
to make one for each flavor; library dep rule likewise rewritten.
($(libc.a)(__.SYMDEF)): Target replaced with one target for each
flavor.
(symdef.%): New pattern rule; helper for __.SYMDEF targets.
(installed-libcs): New variable.
(install): Depend on that instead of
$(libdir)/lib$(libprefix)$(libc-name).a;
that file's rule rewritten to make each enabled libtype.
(install-lib.so): New variable, filters lib%.so from $(install-lib).
(install-lib): Filter out lib%.so after setting install-lib.so.
[$(build-shared)=yes] (install): Install $(install-lib.so).
(common-mostlyclean): Remove all flavors of objects.
Roland McGrath