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1997-08-24 12:24 Ulrich Drepper <drepper@cygnus.com> * configure.in (INSTALL): Quote `$'. * libc.map: Add __xpg_basename. * csu/Makefile (initfini.s): Disable optimization. * elf/dl-deps.c: Implement handling of DL_FILTER. * elf/dl-load.c (_dl_init_paths): Add error check. * intl/finddomain.c (_nl_find_domain): Correct comment. * intl/localealias.c: Include <bits/libc-lock.h> not <libc-lock.h>. * libio/stdio.h: Make {,v}snprintf available if __USE_BSD. Change extern inline functions to work correctly in C++. * locale/iso-4217.def: Update for more recent ISO 4217 version. * locale/loadlocale.c (_nl_load_locale): Add cast. * manual/message.texi: Finish gettext section. * posix/getopt_init.c: Don't use relative #include path. (__getopt_clean_environment): Change function to take pointer to environment as argument. Optimize generation of test string a bit. * sysdeps/unix/sysv/linux/init-first.c: Call __getopt_clean_environment with additional argument. * poisx/glob.c: Add prototype for next_brace_sub. * sysdeps/generic/dl-sysdep.c: Recognize AT_BASE value on auxiliary vector. * sysdeps/i386/dl-machine.h (elf_machine_load_address): Rewrite to not generate relocation entry. Suggested by Richard Henderson. (ELF_MACHINE_BEFORE_RTLD_RELOC): Removed. (elf_machine_runtime_setup): Add .aligns. * sysdeps/i386/fpu/fraiseexcpt.c: Add volatile to asms. * sysdeps/i386/fpu/bits/mathinline.h: Partially undo change of 1997-08-14 03:14. gcc 2.7.2* is really broken in some aspects. * sysdeps/standalone/i386/i386.h: Clean up asm statements a bit. * sysdeps/standalone/i960/i960ca.h: Likewise. 1997-08-22 19:04 Richard Henderson <rth@cygnus.com> * elf/rtld.c (_dl_start): Init _dl_rtld_map.l_opencount due to undocumented test addition in _dl_map_object. Support ET_EXEC versions of ld.so, for debugging at least: * elf/dl-load.c (_dl_map_object): Add_name_to_object could get called despite the DT_SONAME != NULL test, segfaulting. Simplify the code here as well. * elf/dl-lookup.c (do_lookup): Skip objects with no symtab. (_dl_setup_hash): Likewise for hash tables. * elf/dl-version.c (_dl_check_map_versions): Likewise for strtabs. * elf/rtld.c (_dl_start): Likewise for rpath. (_dl_rtld_libname2): New variable. (dl_main): Use it to add an soname for ourselves when we don't have one of our own. Base it on the target's .interp. (dl_main): Again, skip printing of objects that don't have strtabs. Sparc 32 merge: * elf/dl-runtime.c (ELF_FIXUP_RETURN_VALUE): Provide default value. (fixup): Simplify code. Use ELF_FIXUP_RETURN_VALUE. (profile_fixup): Likewise, though this still needs fixing for Sparc32 and PPC. * sysdeps/powerpc/dl-machine.h: Transmute ELF_FIXUP_RETURNS_ADDRESS to ELF_FIXUP_RETURN_VALUE. * sysdeps/sparc/sparc32/dl-machine.h: Implement lazy relocation. Fix up _dl_start_user to handle _dl_skip_args properly. Use _dl_hwcap to determine if "flush" is available/needed. * sysdeps/sparc/configure.in: Remove. It doesn't actually do anything anymore, and what it did do is done somewhere else. * sysdeps/sparc/configure: Likewise. * sysdeps/sparc/fpu/bits/mathdef.h (FP_ILOGB0, FP_ILOGBNAN): New. * sysdeps/sparc/fpu/fraiseexcpt.c: Rearrange for smaller code. * sysdeps/sparc/sparc32/Makefile: Fix sparc->sparc/sparc32 bits in divrem expansions. * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h (END, LOC): New definitions for assembly syntax differences. * sysdeps/sparc/sparc32/__longjmp.S: %g6,%g7 are reserved to the "system". Use %g2,%g3 instead. Use new local label macro. * sysdeps/sparc/sparc32/add_n.S: Use <sysdep.h> and ENTRY, END, and LOC for proper assembly headers/footers. * sysdeps/sparc/sparc32/addmul_1.S: Likewise. * sysdeps/sparc/sparc32/alloca.S: Likewise. * sysdeps/sparc/sparc32/dotmul.S: Likewise. * sysdeps/sparc/sparc32/lshift.S: Likewise. * sysdeps/sparc/sparc32/mul_1.S: Likewise. * sysdeps/sparc/sparc32/rshift.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/addmul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/mul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/submul_1.S: Likewise. * sysdeps/sparc/sparc32/sparcv8/udiv_qrnnd.S: Likewise. * sysdeps/sparc/sparc32/sub_n.S: Likewise. * sysdeps/sparc/sparc32/submul_1.S: Likewise. * sysdeps/sparc/sparc32/udiv_qrnnd.S: Likewise. * sysdeps/sparc/sparc32/umul.S: Likewise. * sysdeps/sparc/sparc32/divrem.m4: Likewise. * sysdeps/sparc/sparc32/rem.S: Regenerate. * sysdeps/sparc/sparc32/sdiv.S: Regenerate. * sysdeps/sparc/sparc32/udiv.S: Regenerate. * sysdeps/sparc/sparc32/urem.S: Regenerate. * sysdeps/sparc/sparc32/sparcv8/dotmul.S: New file. * sysdeps/sparc/sparc32/sparcv8/rem.S: New file. * sysdeps/sparc/sparc32/sparcv8/sdiv.S: New file. * sysdeps/sparc/sparc32/sparcv8/udiv.S: New file. * sysdeps/sparc/sparc32/sparcv8/umul.S: New file. * sysdeps/sparc/sparc32/sparcv8/urem.S: New file. * sysdeps/sparc/sparc32/bsd-_setjmp.S: Dike out. * sysdeps/sparc/sparc32/bsd-setjmp.S: Likewise. * sysdeps/sparc/sparc32/setjmp.S: Add _setjmp and setjmp entry points. * sysdeps/unix/sysv/linux/sparc/sparc32/__sigtrampoline.S: Clean up PIC code. * sysdeps/sparc/sparc32/elf/start.S: New file, slightly modified from the sparc64 version. * sysdeps/sparc/sparc32/elf/start.c: Removed. * sysdeps/unix/sysv/linux/sparc/sparc32/init-first.h: Rewrite in assembly based on the sparc64 version. * sysdeps/sparc/sparc32/fpu/bits/fenv.h: Duh. Use proper syntax for manipulating %fsr. * sysdeps/sparc/sparc32/fpu/fpu_control.h: Make IEEE conformance be the default. * elf/elf.h (HWCAP_SPARC_*): New definitions. * elf/rtld.c (_dl_hwcap): New variable. * sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Record AT_HWCAP. * sysdeps/unix/sysv/linux/sparc/sparc32/getpagesize.c: New file. Attempt to get hold of the page size based on what we might have been told at startup time in _dl_pagesize. This will be obsolete when I finish the kernel hooks for a proper sysconf(), stay tuned. Sparc 64 merge: * sysdeps/sparc/sparc64/dl-machine.h (ELF_FIXUP_RETURN_VALUE): New. Figure out the right thing to return based on the .plt format. * sysdeps/sparc/sparc64/fpu/fpu_control.h: Update comment. * sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h (__dev_t): Should have been 64-bits wide. * sysdeps/unix/sysv/linux/sparc/sparc64/init-first.h: sll->sllx, optimize for branch delay slot usage. 1997-08-22 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * csu/Makefile ($(objpfx)crt%.o): Fix a missing *.so -> *.os change. 1997-08-20 Andreas Jaeger <aj@arthur.rhein-neckar.de> * math/libm-test.c (identities): Change epsilon. * sysdeps/i386/fpu/bits/mathinline.h: Correct arguments to fabs, fabsf, fabsl, __fabsl. * sysdeps/libm-i387/e_remainderl.S: Pop extra value from FPU stack. * sysdeps/libm-ieee754/s_csinhl.c: Include <fenv.h>.
236 lines
6.0 KiB
C
236 lines
6.0 KiB
C
/* Operating system support for run-time dynamic linker. Generic Unix version.
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Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <elf.h>
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#include <entry.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <link.h>
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#include <unistd.h>
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#include <stdio-common/_itoa.h>
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#include <dl-machine.h>
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extern int _dl_argc;
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extern char **_dl_argv;
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extern char **_environ;
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extern size_t _dl_pagesize;
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extern const char *_dl_platform;
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extern unsigned long _dl_hwcap;
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extern size_t _dl_platformlen;
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extern void _end;
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extern void ENTRY_POINT (void);
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ElfW(Addr) _dl_base_addr;
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int __libc_enable_secure;
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int __libc_multiple_libcs; /* Defining this here avoids the inclusion
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of init-first. */
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static ElfW(auxv_t) *_dl_auxv;
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ElfW(Addr)
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_dl_sysdep_start (void **start_argptr,
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void (*dl_main) (const ElfW(Phdr) *phdr, ElfW(Word) phnum,
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ElfW(Addr) *user_entry))
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{
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const ElfW(Phdr) *phdr = NULL;
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ElfW(Word) phnum = 0;
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ElfW(Addr) user_entry;
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ElfW(auxv_t) *av;
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uid_t uid = 0;
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uid_t euid = 0;
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gid_t gid = 0;
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gid_t egid = 0;
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unsigned int seen;
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user_entry = (ElfW(Addr)) &ENTRY_POINT;
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_dl_argc = *(long *) start_argptr;
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_dl_argv = (char **) start_argptr + 1;
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_environ = &_dl_argv[_dl_argc + 1];
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_dl_platform = NULL; /* Default to nothing known about the platform. */
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start_argptr = (void **) _environ;
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while (*start_argptr)
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++start_argptr;
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seen = 0;
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#define M(type) (1 << (type))
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for (av = _dl_auxv = (void *) ++start_argptr;
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av->a_type != AT_NULL;
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seen |= M ((++av)->a_type))
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switch (av->a_type)
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{
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case AT_PHDR:
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phdr = av->a_un.a_ptr;
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break;
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case AT_PHNUM:
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phnum = av->a_un.a_val;
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break;
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case AT_PAGESZ:
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_dl_pagesize = av->a_un.a_val;
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break;
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case AT_ENTRY:
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user_entry = av->a_un.a_val;
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break;
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case AT_BASE:
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_dl_base_addr = av->a_un.a_val;
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break;
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case AT_UID:
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uid = av->a_un.a_val;
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break;
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case AT_GID:
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gid = av->a_un.a_val;
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break;
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case AT_EUID:
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euid = av->a_un.a_val;
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break;
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case AT_EGID:
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egid = av->a_un.a_val;
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break;
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case AT_PLATFORM:
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_dl_platform = av->a_un.a_ptr;
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break;
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case AT_HWCAP:
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_dl_hwcap = av->a_un.a_val;
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break;
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}
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/* Linux doesn't provide us with any of these values on the stack
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when the dynamic linker is run directly as a program. */
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#define SEE(UID, uid) if ((seen & M (AT_##UID)) == 0) uid = __get##uid ()
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SEE (UID, uid);
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SEE (GID, gid);
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SEE (EUID, euid);
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SEE (EGID, egid);
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__libc_enable_secure = uid != euid || gid != egid;
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if (_dl_pagesize == 0)
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_dl_pagesize = __getpagesize ();
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#ifdef DL_SYSDEP_INIT
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DL_SYSDEP_INIT;
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#endif
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#ifdef DL_PLATFORM_INIT
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DL_PLATFORM_INIT;
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#endif
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/* Determine the length of the platform name. */
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if (_dl_platform != NULL)
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_dl_platformlen = strlen (_dl_platform);
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if (__sbrk (0) == &_end)
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/* The dynamic linker was run as a program, and so the initial break
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starts just after our bss, at &_end. The malloc in dl-minimal.c
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will consume the rest of this page, so tell the kernel to move the
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break up that far. When the user program examines its break, it
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will see this new value and not clobber our data. */
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__sbrk (_dl_pagesize - ((&_end - (void *) 0) & (_dl_pagesize - 1)));
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(*dl_main) (phdr, phnum, &user_entry);
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return user_entry;
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}
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void
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_dl_sysdep_start_cleanup (void)
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{
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}
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void
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_dl_show_auxv (void)
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{
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char buf[64];
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ElfW(auxv_t) *av;
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/* Terminate string. */
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buf[63] = '\0';
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for (av = _dl_auxv; av->a_type != AT_NULL; ++av)
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switch (av->a_type)
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{
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case AT_PHDR:
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_dl_sysdep_message ("AT_PHDR: 0x",
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_itoa_word (av->a_un.a_val, buf + sizeof buf - 1,
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16, 0),
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"\n", NULL);
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break;
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case AT_PHNUM:
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_dl_sysdep_message ("AT_PHNUM: ",
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_itoa_word (av->a_un.a_val, buf + sizeof buf - 1,
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10, 0),
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"\n", NULL);
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break;
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case AT_PAGESZ:
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_dl_sysdep_message ("AT_PAGESZ: ",
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_itoa_word (av->a_un.a_val, buf + sizeof buf - 1,
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10, 0),
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"\n", NULL);
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break;
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case AT_ENTRY:
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_dl_sysdep_message ("AT_ENTRY: 0x",
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_itoa_word (av->a_un.a_val, buf + sizeof buf - 1,
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16, 0),
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"\n", NULL);
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break;
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case AT_BASE:
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_dl_sysdep_message ("AT_BASE: 0x",
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_itoa_word (av->a_un.a_val, buf + sizeof buf - 1,
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16, 0),
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"\n", NULL);
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break;
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case AT_UID:
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_dl_sysdep_message ("AT_UID: ",
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_itoa_word (av->a_un.a_val, buf + sizeof buf - 1,
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10, 0),
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"\n", NULL);
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break;
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case AT_GID:
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_dl_sysdep_message ("AT_GID: ",
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_itoa_word (av->a_un.a_val, buf + sizeof buf - 1,
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10, 0),
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"\n", NULL);
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break;
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case AT_EUID:
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_dl_sysdep_message ("AT_EUID: ",
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_itoa_word (av->a_un.a_val, buf + sizeof buf - 1,
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10, 0),
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"\n", NULL);
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break;
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case AT_EGID:
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_dl_sysdep_message ("AT_EGID: ",
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_itoa_word (av->a_un.a_val, buf + sizeof buf - 1,
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10, 0),
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"\n", NULL);
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break;
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case AT_PLATFORM:
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_dl_sysdep_message ("AT_PLATFORM: ", av->a_un.a_ptr, NULL);
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break;
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case AT_HWCAP:
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_dl_sysdep_message ("AT_HWCAP: ",
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_itoa_word (av->a_un.a_val, buf + sizeof buf - 1,
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16, 0),
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"\n", NULL);
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break;
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}
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}
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