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1997-08-14 03:14 Ulrich Drepper <drepper@cygnus.com> * elf/dl-minimal.c: Don't use relative #include paths. (malloc): Don't try to initialize _dl_pagesize, it already is. (__sigjmp_save, longjmp): Reformat. * sysdeps/generic/dl-sysdep.c: Implement _dl_show_auxv function to show content of auxiliary array. (_dl_sysdep_start): Remember start of auxiliary vector. * sysdeps/mach/hurd/dl-sysdep.c: (_dl_show_auxv): New dummy function. * elf/link.h: Add prototype for _dl_show_auxv. * elf/rtld.c (dl_main): Call _dl_show_auxv if LD_SHOW_AUXV envvar is present. * libio/iofdopen.c: Better prepare for use in libstdc++. * libio/iofflush.c: Likewise. * libio/iofgetpos.c: Likewise. * libio/iofgets.c: Likewise. * libio/iofopen.c: Likewise. * libio/iofputs.c: Likewise. * libio/iofread.c: Likewise. * libio/iofsetpos.c: Likewise. * libio/ioftell.c: Likewise. * libio/iofwrite.c: Likewise. * libio/iogetdelim.c: Likewise. * libio/iogets.c: Likewise. * libio/iopopen.c: Likewise. * libio/ioputs.c: Likewise. * libio/iosetbuffer.c: Likewise. * libio/iosetvbuf.c: Likewise. * libio/ioungetc.c: Likewise. * libio/iovsprintf.c: Likewise. * libio/iovsscanf.c: Likewise. * manual/creature.texi: Mention _XOPEN_SOURCE_EXTENDED in correct place. * manual/math.texi: Add comment to sincos decsription to say it's a GNU extension. Fix description of random function. * posix/fnmatch.h: Recognize Windog by _WINDOWS32 not WIN32. * posix/glob.c: Likewise. Handle stupid system headers on SunOS. Add casts for all __alloca calls. * posix/glob.h: Recognize Windog by _WINDOWS32 not WIN32. Declare additional GLOB_* constants also if _GNU_SOURCE is defined. Patches by Paul D. Smith <psmith@BayNetworks.COM>. * stdio-common/_itoa.c: Don't use relateive #include paths. * sysdeps/i386/fpu/bits/mathinline.h: Enable optimizations even for gcc 2.7. (atan): Loading 1.0 from memory does not pay off. (asinh): Fix typo. 1997-08-13 09:44 Philip Blundell <Philip.Blundell@pobox.com> * sysdeps/stub/accept.c: Use socklen_t where necessary. * sysdeps/stub/bind.c: Likewise. * sysdeps/stub/connect.c: Likewise. * sysdeps/stub/getsockname.c: Likewise. * sysdeps/stub/getsockopt.c: Likewise. * sysdeps/stub/recvfrom.c: Likewise. * sysdeps/stub/sendto.c: Likewise. * sysdeps/stub/setsockopt.c: Likewise. 1997-08-11 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * io/ftw.c (object_compare): Avoid memcmp when comparing scalar types. 1997-08-12 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * math/libm-test.c (cbrt_test): Add epsilon for long double to `cbrt (-0.001)'. 1997-08-11 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/stub/bits/string.h: Fix comment. 1997-08-01 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/Makefile (routines): Remove dl-version. (dl-routines): Add it here instead. This removes dead code from libc.so. 1997-08-12 17:17 Wolfram Gloger <wmglo@dent.med.uni-muenchen.de> * malloc/thread-m.h (thread_atfork, thread_atfork_static): New macros to encapsulate pthread_atfork's functionality. * malloc/malloc.c (ptmalloc_lock_all, ptmalloc_unlock_all): New functions, registered via thread_atfork in the initialization routine or via thread_atfork_static in global scope. This ensures a consistent state of all locks across fork(). 1997-08-11 23:00:32 1997 Mark Kettenis <kettenis@phys.uva.nl> * login/programs/xtmp.c (compare_entry): Partially undo patch made by Klaus Espenlaub. There was no xtmp/utmp typo. Added comment to cclarify this. * login/programs/xtmp.h: Likewise. * posix/getopt.c: Recognize Windog by _WINDOWS32 not WIN32. Patch by Paul D. Smith <psmith@BayNetworks.COM>. 1997-08-12 13:51 Ulrich Drepper <drepper@cygnus.com> * login/getutid.c: Rename to __getutid and make getutid and getutxid weak aliases. Patch by ir. Mark M._Kettenis <kettenis@phys.uva.nl>. 1997-08-11 23:55 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/Makefile [subdir=misc] (sysdep_headers): Add bits/mman.h. 1997-08-11 08:51:21 1997 H.J. Lu <hjl@gnu.ai.mit.edu> * stdlib/fmtmsg.c (fmtmsg): Add static to __libc_once_define macro. * libc.map (__progname_full, __progname): Added. 1997-08-04 08:31 H.J. Lu <hjl@gnu.ai.mit.edu> * sysdeps/unix/sysv/linux/if_index.c (if_nametoindex): Return 0 if SIOGIFINDEX is not defined. (if_indextoname): Initialize "result" to NULL. (if_nametoindex, if_nameindex): Fix ENOSYS setting. 1997-08-11 11:58 Richard Henderson <rth@cygnus.com> Sparc ISO C 9x exception handling: * sysdeps/sparc/fpu/bits/mathdef.h: New file. * sysdeps/sparc/fpu/fclrexcpt.c: New file. * sysdeps/sparc/fpu/fegetenv.c: New file. * sysdeps/sparc/fpu/fegetround.c: New file. * sysdeps/sparc/fpu/feholdexcpt.c: New file. * sysdeps/sparc/fpu/fesetenv.c: New file. * sysdeps/sparc/fpu/fesetround.c: New file. * sysdeps/sparc/fpu/feupdateenv.c: New file. * sysdeps/sparc/fpu/fgetexcptflg.c: New file. * sysdeps/sparc/fpu/fraiseexcpt.c: New file. * sysdeps/sparc/fpu/fsetexcptflg.c: New file. * sysdeps/sparc/fpu/ftestexcept.c: New file. * sysdeps/sparc/sparc32/fpu/bits/fenv.h: New file. * sysdeps/sparc/sparc64/fpu/bits/fenv.h: New file. 1997-08-11 11:58 Richard Henderson <rth@cygnus.com> Sparc64 merge: * configure.in: Change up subdirectories, rename sparc8->sparcv8. * csu/Makefile: Nuke need-nopic-initfini bits. The problem was that sparc64 ld did not recognize pic relocs at all. * elf/dl-deps.c: Include <string.h>. * elf/do-rel.h (elf_dynamic_do_rel): Take reloc address and size directly instead of the DT names to get them from. * elf/dynamic-link.h (_ELF_DYNAMIC_DO_RELOC): New macro distilled from ELF_DYNAMIC_DO_REL{,A}. Define a second version that accounts for the possibility that DT_RELA and DT_JMPPLT overlap, as such is the case on the Sparc. * elf/elf.h: Stub out Elf64_Ver*, and make them the same as the Elf32_Ver* bits. The linker does not even know to differentiate between the word sizes. Someone should examine this and figure out what the proper sizes of things should be for 64-bit hosts before the sparc64 libraries are distributed. * shlib-versions: Rename sparc64 ld.so to not conflict with sparc32 on the same machine. Move old sysdeps/sparc contents to sysdeps/sparc/sparc32, rename sparc8 subdir to sparcv8, move sysdeps/sparc64 content to sysdeps/sparc/sparc64. Same for sysdeps/unix/sysv/linux/sparc. * sysdeps/sparc/Implies: Do ieee754 here. * sysdeps/sparc/configure.in: Move from sparc32/. * sysdeps/sparc/sparc32/Implies: Do wordsize here. * sysdeps/sparc/sparc64/Implies: Likewise. * sysdeps/sparc/sparc32/dl-machine.h (elf_machine_load_address): Use uninitialized .got to find load address instead of AT_BASE, as the later does not exist when running ld.so directly. * sysdeps/sparc/sparc32/fpu/fpu_control.h: Move from ../. * sysdeps/sparc/sparc64/fpu/fpu_control.h: Likewise. * sysdeps/sparc/sparc32/udiv_qrnnd.S: Clean up PIC support. * sysdeps/sparc/sparc64/Makefile (sysdep_routines): Add s_finitel and s_signbitl for stdio. * sysdeps/sparc/sparc64/configure.in: Remove, we no longer need nopic_initfini. * sysdeps/sparc/sparc64/bsd-_setjmp.S: Remove. * sysdeps/sparc/sparc64/bsd-setjmp.S: Remove. * sysdeps/unix/sysv/linux/sparc/sparc64/bsd-_setjmp.S: New empty file. * sysdeps/unix/sysv/linux/sparc/sparc64/bsd-setjmp.S: New empty file. * sysdeps/unix/sysv/linux/sparc/sparc64/longjmp.S: Add __longjmp alias. * sysdeps/unix/sysv/linux/sparc/sparc64/setjmp.S: Add weak _setjmp and setjmp entry points. * sysdeps/sparc/sparc64/dl-machine.h: Finish real implementation. * sysdeps/sparc/sparc64/elf/crtbegin.S: Add copyright, fix PIC. * sysdeps/sparc/sparc64/elf/crtend.S: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/sigaction.h (struct sigaction): Fix sa_flags size for sparc64; add sa_restorer for kernel. * sysdeps/unix/sysv/linux/sparc/sparc64/brk.S: Fix PIC. * sysdeps/unix/sysv/linux/sparc/sparc64/clone.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/init-first.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/syscall.S: New file. 1997-08-10 18:29:08 1997 Mark Kettenis <kettenis@phys.uva.nl> * login/login.c (login): Check for correct return value of utmpname. 1997-08-11 16:49 Ulrich Drepper <drepper@cygnus.com> * time/tzset.c (__tzset_internal): Correctly handle TZ strings following incorrect old POSIX specs. Patch by Paul Eggert <eggert@twinsun.com>. * sysdeps/generic/bits/sigaction.h: Correct comment for SA_RESTART. * sysdeps/unix/bsd/osf/bits/sigaction.h: Likewise. * sysdeps/unix/sysv/linux/alpha/bits/sigaction.h: Likewise. * sysdeps/unix/sysv/linux/bits/sigaction.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/sigaction.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/sigaction.h: Likewise. * sysdeps/unix/sysv/minix/bits/sigaction.h: Likewise. * sysdeps/unix/sysv/sysv4/bits/sigaction.h: Likewise. Reported by NIIBE Yutaka <gniibe@mri.co.jp>. 1997-08-09 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/math.texi: Define the macros @mul and @infinity and use them to format the multiplication and infinity signs. (FP Comparison Functions): Use @code, not @math, for C code examples. * elf/dl-profile.c: Add descriptions and implement reading of
173 lines
6.3 KiB
C
173 lines
6.3 KiB
C
/* Inline functions for dynamic linking.
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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 <dl-machine.h>
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#include <assert.h>
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/* Global read-only variable defined in rtld.c which is nonzero if we
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shall give more warning messages. */
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extern int _dl_verbose __attribute__ ((unused));
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/* Read the dynamic section at DYN and fill in INFO with indices DT_*. */
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static inline void __attribute__ ((unused))
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elf_get_dynamic_info (ElfW(Dyn) *dyn,
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ElfW(Dyn) *info[DT_NUM + DT_PROCNUM + DT_VERSIONTAGNUM
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+ DT_EXTRANUM])
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{
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unsigned int i;
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for (i = 0; i < DT_NUM + DT_PROCNUM + DT_VERSIONTAGNUM + DT_EXTRANUM; ++i)
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info[i] = NULL;
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if (! dyn)
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return;
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while (dyn->d_tag != DT_NULL)
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{
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if (dyn->d_tag < DT_NUM)
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info[dyn->d_tag] = dyn;
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else if (dyn->d_tag >= DT_LOPROC &&
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dyn->d_tag < DT_LOPROC + DT_PROCNUM)
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info[dyn->d_tag - DT_LOPROC + DT_NUM] = dyn;
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else if ((Elf32_Word) DT_VERSIONTAGIDX (dyn->d_tag) < DT_VERSIONTAGNUM)
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info[DT_VERSIONTAGIDX (dyn->d_tag) + DT_NUM + DT_PROCNUM] = dyn;
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else if ((Elf32_Word) DT_EXTRATAGIDX (dyn->d_tag) < DT_EXTRANUM)
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info[DT_EXTRATAGIDX (dyn->d_tag) + DT_NUM + DT_PROCNUM
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+ DT_VERSIONTAGNUM] = dyn;
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else
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assert (! "bad dynamic tag");
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dyn++;
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}
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if (info[DT_RELA])
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assert (info[DT_RELAENT]->d_un.d_val == sizeof (ElfW(Rela)));
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if (info[DT_REL])
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assert (info[DT_RELENT]->d_un.d_val == sizeof (ElfW(Rel)));
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if (info[DT_PLTREL])
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assert (info[DT_PLTREL]->d_un.d_val == DT_REL ||
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info[DT_PLTREL]->d_un.d_val == DT_RELA);
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}
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#ifdef RESOLVE
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/* Get the definitions of `elf_dynamic_do_rel' and `elf_dynamic_do_rela'.
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These functions are almost identical, so we use cpp magic to avoid
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duplicating their code. It cannot be done in a more general function
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because we must be able to completely inline. */
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/* On some machines, notably Sparc, DT_REL* includes DT_JMPREL in its
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range. Note that according to the ELF spec, this is completely legal!
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But conditionally define things so that on machines we know this will
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not happen we do something more optimal. */
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#ifdef ELF_MACHINE_PLTREL_OVERLAP
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#define _ELF_DYNAMIC_DO_RELOC(RELOC, reloc, map, lazy) \
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do { \
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ElfW(Addr) r_addr, r_size, p_addr, p_size; \
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if ((map)->l_info[DT_##RELOC]) \
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{ \
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r_addr = (map)->l_info[DT_##RELOC]->d_un.d_ptr; \
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r_size = (map)->l_info[DT_##RELOC##SZ]->d_un.d_val; \
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if ((map)->l_info[DT_PLTREL] && \
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(map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC) \
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{ \
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p_addr = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \
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p_size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \
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if (r_addr <= p_addr && r_addr+r_size > p_addr) \
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{ \
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ElfW(Addr) r2_addr, r2_size; \
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r2_addr = p_addr+p_size; \
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if (r2_addr < r_addr+r_size) \
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{ \
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r2_size = r_addr+r_size - r2_addr; \
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elf_dynamic_do_##reloc ((map), r2_addr, r2_size, 0); \
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} \
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r_size = p_addr - r_addr; \
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} \
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} \
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\
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elf_dynamic_do_##reloc ((map), r_addr, r_size, 0); \
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if (p_addr) \
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elf_dynamic_do_##reloc ((map), p_addr, p_size, (lazy)); \
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} \
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else if ((map)->l_info[DT_PLTREL] && \
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(map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC) \
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{ \
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p_addr = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \
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p_size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \
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\
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elf_dynamic_do_##reloc ((map), p_addr, p_size, (lazy)); \
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} \
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} while (0)
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#else
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#define _ELF_DYNAMIC_DO_RELOC(RELOC, reloc, map, lazy) \
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do { \
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if ((map)->l_info[DT_##RELOC]) \
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{ \
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ElfW(Addr) r_addr, r_size; \
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r_addr = (map)->l_info[DT_##RELOC]->d_un.d_ptr; \
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r_size = (map)->l_info[DT_##RELOC##SZ]->d_un.d_val; \
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elf_dynamic_do_##reloc ((map), r_addr, r_size, 0); \
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} \
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if ((map)->l_info[DT_PLTREL] && \
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(map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC) \
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{ \
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ElfW(Addr) p_addr, p_size; \
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p_addr = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \
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p_size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \
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elf_dynamic_do_##reloc ((map), p_addr, p_size, (lazy)); \
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} \
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} while (0)
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#endif
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#if ! ELF_MACHINE_NO_REL
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#include "do-rel.h"
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#define ELF_DYNAMIC_DO_REL(map, lazy) \
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_ELF_DYNAMIC_DO_RELOC (REL, rel, map, lazy)
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#else
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#define ELF_DYNAMIC_DO_REL(map, lazy) /* Nothing to do. */
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#endif
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#if ! ELF_MACHINE_NO_RELA
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#define DO_RELA
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#include "do-rel.h"
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#define ELF_DYNAMIC_DO_RELA(map, lazy) \
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_ELF_DYNAMIC_DO_RELOC (RELA, rela, map, lazy)
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#else
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#define ELF_DYNAMIC_DO_RELA(map, lazy) /* Nothing to do. */
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#endif
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/* This can't just be an inline function because GCC is too dumb
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to inline functions containing inlines themselves. */
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#define ELF_DYNAMIC_RELOCATE(map, lazy, consider_profile) \
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do { \
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int profile = (consider_profile && _dl_profile != NULL \
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&& _dl_name_match_p (_dl_profile, (map))); \
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int edr_lazy = elf_machine_runtime_setup ((map), (lazy) || profile, \
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profile); \
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ELF_DYNAMIC_DO_REL ((map), edr_lazy); \
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ELF_DYNAMIC_DO_RELA ((map), edr_lazy); \
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} while (0)
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#endif
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