# don't change em like *-*-bsd does
mips-dec-netbsd*) fmt=elf targ=mips-lit endian=little ;;
- mips-*-openbsd*) fmt=elf targ=mips-lit endian=little ;;
+ mips-*-openbsd*) fmt=elf
+ case "$endian" in
+ big) targ=mips-big ;;
+ *) targ=mips-lit ;;
+ esac
+ ;;
mips-dec-bsd*) fmt=aout targ=mips-lit ;;
mips-sony-bsd*) fmt=ecoff targ=mips-big ;;
mips-*-bsd*) { echo "configure: error: Unknown vendor for mips-bsd configuration." 1>&2; exit 1; } ;;
edelta68.o \
eebmon29k.o \
eelf32_sparc.o \
- eelf32arc.o \
eelf32b4300.o \
eelf32bmip.o \
eelf32ebmip.o \
em88kbcs.o \
emipsbig.o \
emipsbsd.o \
+ emipsel_obsd.o \
+ emipseb_obsd.o \
emipsidt.o \
emipsidtl.o \
emipslit.o \
eelf32_sparc.c: $(srcdir)/emulparams/elf32_sparc.sh \
$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32_sparc "$(tdir_elf32_sparc)"
-eelf32arc.c: $(srcdir)/emulparams/elf32arc.sh \
- $(srcdir)/emultempl/elfarc.em $(srcdir)/scripttempl/elfmips.sc ${GEN_DEPENDS}
- ${GENSCRIPTS} elf32arc "$(tdir_elf32arc)"
eelf32b4300.c: $(srcdir)/emulparams/elf32b4300.sh \
$(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
${GENSCRIPTS} elf32b4300 "$(tdir_elf32b4300)"
emipsbsd.c: $(srcdir)/emulparams/mipsbsd.sh \
$(srcdir)/emultempl/generic.em $(srcdir)/scripttempl/mipsbsd.sc ${GEN_DEPENDS}
${GENSCRIPTS} mipsbsd
+emipsel_obsd.c: $(srcdir)/emulparams/mipsel_obsd.sh \
+ $(srcdir)/emultempl/elfobsd.em $(srcdir)/scripttempl/elfmips.sc ${GEN_DEPENDS}
+ ${GENSCRIPTS} mipsel_obsd "$(tdir_mipsel_obsd)"
+emipseb_obsd.c: $(srcdir)/emulparams/mipseb_obsd.sh \
+ $(srcdir)/emultempl/elfarc.em $(srcdir)/scripttempl/elfmips.sc ${GEN_DEPENDS}
+ ${GENSCRIPTS} mipseb_obsd "$(tdir_mipseb_obsd)"
emipsidt.c: $(srcdir)/emulparams/mipsidt.sh \
$(srcdir)/emultempl/mipsecoff.em $(srcdir)/scripttempl/mips.sc ${GEN_DEPENDS}
${GENSCRIPTS} mipsidt "$(tdir_mipsidt)"
mips*-*-ecoff*) targ_emul=mipsidt ;;
mips*-dec-bsd*) targ_emul=mipsbsd ;;
mips*-dec-netbsd*) targ_emul=elf32lmip ;;
-mips*-*-openbsd*) targ_emul=elf32arc ;;
-mips-heurikon-openbsd*) targ_emul=elf32bmip ;;
+mips*el-*-openbsd*) targ_emul=mipsel_obsd ;;
+mips*-*-openbsd*) targ_emul=mipseb_obsd ;;
# mips*-dec-openbsd*) targ_emul=elf32lmip ;;
mips*-*-bsd*) targ_emul=mipsbig ;;
mips*vr4300el-*-elf*) targ_emul=elf32l4300 ;;
--- /dev/null
+SCRIPT_NAME=elfmips
+OUTPUT_FORMAT="elf32-bigmips"
+BIG_OUTPUT_FORMAT="elf32-bigmips"
+LITTLE_OUTPUT_FORMAT="elf32-littlemips"
+TEXT_START_ADDR=0x0400000
+DATA_ADDR=0x10000000
+MAXPAGESIZE=0x40000
+NONPAGED_TEXT_START_ADDR=0x0400000
+SHLIB_TEXT_START_ADDR=0x5ffe0000
+OTHER_READONLY_SECTIONS='.reginfo : { *(.reginfo) }'
+OTHER_GOT_SYMBOLS='
+ _gp = ALIGN(16) + 0x7ff0;
+'
+OTHER_READWRITE_SECTIONS='
+ .lit8 : { *(.lit8) }
+ .lit4 : { *(.lit4) }
+'
+TEXT_START_SYMBOLS='_ftext = . ;'
+DATA_START_SYMBOLS='_fdata = . ;'
+OTHER_BSS_SYMBOLS='_fbss = .;'
+OTHER_SECTIONS='
+ .gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }
+ .gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }
+'
+ARCH=mips
+TEMPLATE_NAME=elfobsd
+GENERATE_SHLIB_SCRIPT=yes
--- /dev/null
+SCRIPT_NAME=elfmips
+OUTPUT_FORMAT="elf32-littlemips"
+BIG_OUTPUT_FORMAT="elf32-bigmips"
+LITTLE_OUTPUT_FORMAT="elf32-littlemips"
+TEXT_START_ADDR=0x0400000
+DATA_ADDR=0x10000000
+MAXPAGESIZE=0x40000
+NONPAGED_TEXT_START_ADDR=0x0400000
+SHLIB_TEXT_START_ADDR=0x5ffe0000
+OTHER_READONLY_SECTIONS='.reginfo : { *(.reginfo) }'
+OTHER_GOT_SYMBOLS='
+ _gp = ALIGN(16) + 0x7ff0;
+'
+OTHER_READWRITE_SECTIONS='
+ .lit8 : { *(.lit8) }
+ .lit4 : { *(.lit4) }
+'
+TEXT_START_SYMBOLS='_ftext = . ;'
+DATA_START_SYMBOLS='_fdata = . ;'
+OTHER_BSS_SYMBOLS='_fbss = .;'
+OTHER_SECTIONS='
+ .gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }
+ .gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }
+'
+ARCH=mips
+TEMPLATE_NAME=elfobsd
+GENERATE_SHLIB_SCRIPT=yes
+++ /dev/null
-# This shell script emits a C file. -*- C -*-
-# It does some substitutions.
-# This file is now misnamed, because it supports both 32 bit and 64 bit
-# ELF emulations.
-test -z "${ELFSIZE}" && ELFSIZE=32
-cat >e${EMULATION_NAME}.c <<EOF
-/* This file is is generated by a shell script. DO NOT EDIT! */
-
-/* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
- Copyright (C) 1991, 93, 94, 95, 1996 Free Software Foundation, Inc.
- Written by Steve Chamberlain <sac@cygnus.com>
- ELF support by Ian Lance Taylor <ian@cygnus.com>
-
-This file is part of GLD, the Gnu Linker.
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#define TARGET_IS_${EMULATION_NAME}
-
-#include "bfd.h"
-#include "sysdep.h"
-
-#include <ctype.h>
-#include <dirent.h>
-
-#include "bfdlink.h"
-
-#include "ld.h"
-#include "ldmain.h"
-#include "ldemul.h"
-#include "ldfile.h"
-#include "ldmisc.h"
-#include "ldexp.h"
-#include "ldlang.h"
-#include "ldgram.h"
-
-static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
-static boolean gld${EMULATION_NAME}_open_dynamic_archive
- PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
-static void gld${EMULATION_NAME}_after_open PARAMS ((void));
-static void gld${EMULATION_NAME}_check_needed
- PARAMS ((lang_input_statement_type *));
-static void gld${EMULATION_NAME}_stat_needed
- PARAMS ((lang_input_statement_type *));
-static boolean gld${EMULATION_NAME}_search_needed
- PARAMS ((const char *, const char *));
-static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *));
-static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
-static void gld${EMULATION_NAME}_find_statement_assignment
- PARAMS ((lang_statement_union_type *));
-static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *));
-static boolean gld${EMULATION_NAME}_place_orphan
- PARAMS ((lang_input_statement_type *, asection *));
-static void gld${EMULATION_NAME}_place_section
- PARAMS ((lang_statement_union_type *));
-static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));
-
-static void
-gld${EMULATION_NAME}_before_parse()
-{
- ldfile_output_architecture = bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`;
- config.dynamic_link = ${DYNAMIC_LINK-true};
-}
-
-/* Try to open a dynamic archive. This is where we know that ELF
- dynamic libraries have an extension of .so. */
-/* Library not found as plain .so. Scan version numbers. Note that so.1 is
- prefered before so.1.n because the first form is assumed to be a symlink
- created by ldconfig to the configured version */
-static char *
-findshlib(arch, search, entry)
- const char *arch;
- search_dirs_type *search;
- lang_input_statement_type *entry;
-{
- DIR *dd = opendir(search->name);
- struct dirent *dp;
- char *string;
- int len;
- int version = -1;
- int subversion = -1;
-
-
- if(dd == NULL)
- return(NULL);
-
- string = (char *)xmalloc(strlen (search->name)
- + strlen (entry->filename)
- + strlen (arch)
- + sizeof "/lib.so."
- + 16); /* XXX 16 would be sufficient for a version no */
- sprintf(string, "lib%s%s.so.", entry->filename, arch);
- len = strlen(string);
-
- while((dp = readdir(dd)) != NULL) {
- if(dp->d_namlen < len)
- continue;
- if(strncmp(string, dp->d_name, len) == 0) {
- char *cp = &dp->d_name[len];
- int v;
- if(!isdigit(*cp))
- continue;
- v = strtol(cp, &cp, 10);
- if(*cp == 0 && v >= version) {
- version = v;
- subversion = -1;
- }
- if(*cp++ == '.' && v > version) {
- version = v;
- subversion = strtol(cp, &cp, 10);
- }
- }
- }
- closedir(dd);
-
- if(version < 0) {
- free(string);
- return(NULL);
- }
- if(subversion < 0)
- sprintf (string, "%s/lib%s%s.so.%d", search->name, entry->filename, arch, version);
- else
- sprintf (string, "%s/lib%s%s.so.%d.%d", search->name, entry->filename, arch, version, subversion);
- return(string);
-}
-
-static boolean
-gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
- const char *arch;
- search_dirs_type *search;
- lang_input_statement_type *entry;
-{
- const char *filename;
- char *string;
-
- if (! entry->is_archive)
- return false;
-
- filename = entry->filename;
-
- string = (char *) xmalloc (strlen (search->name)
- + strlen (filename)
- + strlen (arch)
- + sizeof "/lib.so");
-
- sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
-
- if (! ldfile_try_open_bfd (string, entry))
- {
- free (string);
- string = findshlib(arch, search, entry);
- if(!string || !ldfile_try_open_bfd (string, entry)) {
- free (string);
- return false;
- }
- }
-
- entry->filename = string;
-
- /* We have found a dynamic object to include in the link. The ELF
- backend linker will create a DT_NEEDED entry in the .dynamic
- section naming this file. If this file includes a DT_SONAME
- entry, it will be used. Otherwise, the ELF linker will just use
- the name of the file. For an archive found by searching, like
- this one, the DT_NEEDED entry should consist of just the name of
- the file, without the path information used to find it. Note
- that we only need to do this if we have a dynamic object; an
- archive will never be referenced by a DT_NEEDED entry.
-
- FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
- very pretty. I haven't been able to think of anything that is
- pretty, though. */
- if (bfd_check_format (entry->the_bfd, bfd_object)
- && (entry->the_bfd->flags & DYNAMIC) != 0)
- {
- char *needed_name;
-
- ASSERT (entry->is_archive && entry->search_dirs_flag);
- needed_name = (char *) xmalloc (strlen (filename)
- + strlen (arch)
- + sizeof "lib.so");
- sprintf (needed_name, "lib%s%s.so", filename, arch);
- bfd_elf_set_dt_needed_name (entry->the_bfd, needed_name);
- }
-
- return true;
-}
-
-EOF
-if [ "x${host}" = "x${target}" ] ; then
- if [ "x${DEFAULT_EMULATION}" = "x${EMULATION_NAME}" ] ; then
-cat >>e${EMULATION_NAME}.c <<EOF
-
-/* For a native linker, check the file /etc/ld.so.conf for directories
- in which we may find shared libraries. /etc/ld.so.conf is really
- only meaningful on Linux, but we check it on other systems anyhow. */
-
-static boolean gld${EMULATION_NAME}_check_ld_so_conf PARAMS ((const char *));
-
-static boolean
-gld${EMULATION_NAME}_check_ld_so_conf (name)
- const char *name;
-{
- static boolean initialized;
- static char *ld_so_conf;
-
- if (! initialized)
- {
- FILE *f;
-
- f = fopen ("/etc/ld.so.conf", FOPEN_RT);
- if (f != NULL)
- {
- char *b;
- size_t len, alloc;
- int c;
-
- len = 0;
- alloc = 100;
- b = (char *) xmalloc (alloc);
-
- while ((c = getc (f)) != EOF)
- {
- if (len + 1 >= alloc)
- {
- alloc *= 2;
- b = (char *) xrealloc (b, alloc);
- }
- if (c != ':'
- && c != ' '
- && c != '\t'
- && c != '\n'
- && c != ',')
- {
- b[len] = c;
- ++len;
- }
- else
- {
- if (len > 0 && b[len - 1] != ':')
- {
- b[len] = ':';
- ++len;
- }
- }
- }
-
- if (len > 0 && b[len - 1] == ':')
- --len;
-
- if (len > 0)
- b[len] = '\0';
- else
- {
- free (b);
- b = NULL;
- }
-
- fclose (f);
-
- ld_so_conf = b;
- }
-
- initialized = true;
- }
-
- if (ld_so_conf == NULL)
- return false;
-
- return gld${EMULATION_NAME}_search_needed (ld_so_conf, name);
-}
-
-EOF
- fi
-fi
-cat >>e${EMULATION_NAME}.c <<EOF
-
-/* These variables are required to pass information back and forth
- between after_open and check_needed and stat_needed. */
-
-static struct bfd_link_needed_list *global_needed;
-static struct stat global_stat;
-static boolean global_found;
-
-/* This is called after all the input files have been opened. */
-
-static void
-gld${EMULATION_NAME}_after_open ()
-{
- struct bfd_link_needed_list *needed, *l;
-
- /* We only need to worry about this when doing a final link. */
- if (link_info.relocateable || link_info.shared)
- return;
-
- /* Get the list of files which appear in DT_NEEDED entries in
- dynamic objects included in the link (often there will be none).
- For each such file, we want to track down the corresponding
- library, and include the symbol table in the link. This is what
- the runtime dynamic linker will do. Tracking the files down here
- permits one dynamic object to include another without requiring
- special action by the person doing the link. Note that the
- needed list can actually grow while we are stepping through this
- loop. */
- needed = bfd_elf_get_needed_list (output_bfd, &link_info);
- for (l = needed; l != NULL; l = l->next)
- {
- struct bfd_link_needed_list *ll;
- const char *lib_path;
- size_t len;
- search_dirs_type *search;
-
- /* If we've already seen this file, skip it. */
- for (ll = needed; ll != l; ll = ll->next)
- if (strcmp (ll->name, l->name) == 0)
- break;
- if (ll != l)
- continue;
-
- /* See if this file was included in the link explicitly. */
- global_needed = l;
- global_found = false;
- lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
- if (global_found)
- continue;
-
- /* We need to find this file and include the symbol table. We
- want to search for the file in the same way that the dynamic
- linker will search. That means that we want to use
- rpath_link, rpath, then the environment variable
- LD_LIBRARY_PATH (native only), then the linker script
- LIB_SEARCH_DIRS. We do not search using the -L arguments. */
- if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
- l->name))
- continue;
- if (gld${EMULATION_NAME}_search_needed (command_line.rpath, l->name))
- continue;
- if (command_line.rpath_link == NULL
- && command_line.rpath == NULL)
- {
- lib_path = (const char *) getenv ("LD_RUN_PATH");
- if (gld${EMULATION_NAME}_search_needed (lib_path, l->name))
- continue;
- }
-EOF
-if [ "x${host}" = "x${target}" ] ; then
- if [ "x${DEFAULT_EMULATION}" = "x${EMULATION_NAME}" ] ; then
-cat >>e${EMULATION_NAME}.c <<EOF
- lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
- if (gld${EMULATION_NAME}_search_needed (lib_path, l->name))
- continue;
-EOF
- fi
-fi
-cat >>e${EMULATION_NAME}.c <<EOF
- len = strlen (l->name);
- for (search = search_head; search != NULL; search = search->next)
- {
- char *filename;
-
- if (search->cmdline)
- continue;
- filename = (char *) xmalloc (strlen (search->name) + len + 2);
- sprintf (filename, "%s/%s", search->name, l->name);
- if (gld${EMULATION_NAME}_try_needed (filename))
- break;
- free (filename);
- }
- if (search != NULL)
- continue;
-EOF
-if [ "x${host}" = "x${target}" ] ; then
- if [ "x${DEFAULT_EMULATION}" = "x${EMULATION_NAME}" ] ; then
-cat >>e${EMULATION_NAME}.c <<EOF
- if (gld${EMULATION_NAME}_check_ld_so_conf (l->name))
- continue;
-EOF
- fi
-fi
-cat >>e${EMULATION_NAME}.c <<EOF
-
- einfo ("%P: warning: %s, needed by %B, not found\n",
- l->name, l->by);
- }
-}
-
-/* Search for a needed file in a path. */
-
-static boolean
-gld${EMULATION_NAME}_search_needed (path, name)
- const char *path;
- const char *name;
-{
- const char *s;
- size_t len;
-
- if (path == NULL || *path == '\0')
- return false;
- len = strlen (name);
- while (1)
- {
- char *filename, *sset;
-
- s = strchr (path, ':');
- if (s == NULL)
- s = path + strlen (path);
-
- filename = (char *) xmalloc (s - path + len + 2);
- if (s == path)
- sset = filename;
- else
- {
- memcpy (filename, path, s - path);
- filename[s - path] = '/';
- sset = filename + (s - path) + 1;
- }
- strcpy (sset, name);
-
- if (gld${EMULATION_NAME}_try_needed (filename))
- return true;
-
- free (filename);
-
- if (*s == '\0')
- break;
- path = s + 1;
- }
-
- return false;
-}
-
-/* This function is called for each possible name for a dynamic object
- named by a DT_NEEDED entry. */
-
-static boolean
-gld${EMULATION_NAME}_try_needed (name)
- const char *name;
-{
- bfd *abfd;
-
- abfd = bfd_openr (name, bfd_get_target (output_bfd));
- if (abfd == NULL)
- return false;
- if (! bfd_check_format (abfd, bfd_object))
- {
- (void) bfd_close (abfd);
- return false;
- }
- if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
- {
- (void) bfd_close (abfd);
- return false;
- }
-
- /* We've found a dynamic object matching the DT_NEEDED entry. */
-
- /* We have already checked that there is no other input file of the
- same name. We must now check again that we are not including the
- same file twice. We need to do this because on many systems
- libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
- reference libc.so.1. If we have already included libc.so, we
- don't want to include libc.so.1 if they are the same file, and we
- can only check that using stat. */
-
- if (bfd_stat (abfd, &global_stat) != 0)
- einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
- global_found = false;
- lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
- if (global_found)
- {
- /* Return true to indicate that we found the file, even though
- we aren't going to do anything with it. */
- return true;
- }
-
- /* Tell the ELF backend that don't want the output file to have a
- DT_NEEDED entry for this file. */
- bfd_elf_set_dt_needed_name (abfd, "");
-
- /* Add this file into the symbol table. */
- if (! bfd_link_add_symbols (abfd, &link_info))
- einfo ("%F%B: could not read symbols: %E\n", abfd);
-
- return true;
-}
-
-/* See if an input file matches a DT_NEEDED entry by name. */
-
-static void
-gld${EMULATION_NAME}_check_needed (s)
- lang_input_statement_type *s;
-{
- if (global_found)
- return;
-
- if (s->filename != NULL
- && strcmp (s->filename, global_needed->name) == 0)
- {
- global_found = true;
- return;
- }
-
- if (s->the_bfd != NULL)
- {
- const char *soname;
-
- soname = bfd_elf_get_dt_soname (s->the_bfd);
- if (soname != NULL
- && strcmp (soname, global_needed->name) == 0)
- {
- global_found = true;
- return;
- }
- }
-
- if (s->search_dirs_flag
- && s->filename != NULL
- && strchr (global_needed->name, '/') == NULL)
- {
- const char *f;
-
- f = strrchr (s->filename, '/');
- if (f != NULL
- && strcmp (f + 1, global_needed->name) == 0)
- {
- global_found = true;
- return;
- }
- }
-}
-
-/* See if an input file matches a DT_NEEDED entry by running stat on
- the file. */
-
-static void
-gld${EMULATION_NAME}_stat_needed (s)
- lang_input_statement_type *s;
-{
- struct stat st;
- const char *suffix;
- const char *soname;
- const char *f;
-
- if (global_found)
- return;
- if (s->the_bfd == NULL)
- return;
-
- if (bfd_stat (s->the_bfd, &st) != 0)
- {
- einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
- return;
- }
-
- if (st.st_dev == global_stat.st_dev
- && st.st_ino == global_stat.st_ino)
- {
- global_found = true;
- return;
- }
-
- /* We issue a warning if it looks like we are including two
- different versions of the same shared library. For example,
- there may be a problem if -lc picks up libc.so.6 but some other
- shared library has a DT_NEEDED entry of libc.so.5. This is a
- hueristic test, and it will only work if the name looks like
- NAME.so.VERSION. FIXME: Depending on file names is error-prone.
- If we really want to issue warnings about mixing version numbers
- of shared libraries, we need to find a better way. */
-
- if (strchr (global_needed->name, '/') != NULL)
- return;
- suffix = strstr (global_needed->name, ".so.");
- if (suffix == NULL)
- return;
- suffix += sizeof ".so." - 1;
-
- soname = bfd_elf_get_dt_soname (s->the_bfd);
- if (soname == NULL)
- soname = s->filename;
-
- f = strrchr (soname, '/');
- if (f != NULL)
- ++f;
- else
- f = soname;
-
- if (strncmp (f, global_needed->name, suffix - global_needed->name) == 0)
- einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
- global_needed->name, global_needed->by, f);
-}
-
-/* This is called after the sections have been attached to output
- sections, but before any sizes or addresses have been set. */
-
-static void
-gld${EMULATION_NAME}_before_allocation ()
-{
- const char *rpath;
- asection *sinterp;
-
- /* If we are going to make any variable assignments, we need to let
- the ELF backend know about them in case the variables are
- referred to by dynamic objects. */
- lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
-
- /* Let the ELF backend work out the sizes of any sections required
- by dynamic linking. */
- rpath = command_line.rpath;
- if (rpath == NULL)
- rpath = (const char *) getenv ("LD_RUN_PATH");
- if (! bfd_elf${ELFSIZE}_size_dynamic_sections (output_bfd,
- command_line.soname,
- rpath,
- command_line.export_dynamic,
- &link_info,
- &sinterp))
- einfo ("%P%F: failed to set dynamic section sizes: %E\n");
-
- /* Let the user override the dynamic linker we are using. */
- if (command_line.interpreter != NULL
- && sinterp != NULL)
- {
- sinterp->contents = (bfd_byte *) command_line.interpreter;
- sinterp->_raw_size = strlen (command_line.interpreter) + 1;
- }
-
- /* Look for any sections named .gnu.warning. As a GNU extensions,
- we treat such sections as containing warning messages. We print
- out the warning message, and then zero out the section size so
- that it does not get copied into the output file. */
-
- {
- LANG_FOR_EACH_INPUT_STATEMENT (is)
- {
- asection *s;
- bfd_size_type sz;
- char *msg;
- boolean ret;
-
- if (is->just_syms_flag)
- continue;
-
- s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
- if (s == NULL)
- continue;
-
- sz = bfd_section_size (is->the_bfd, s);
- msg = xmalloc ((size_t) sz + 1);
- if (! bfd_get_section_contents (is->the_bfd, s, msg, (file_ptr) 0, sz))
- einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
- is->the_bfd);
- msg[sz] = '\0';
- ret = link_info.callbacks->warning (&link_info, msg,
- (const char *) NULL,
- is->the_bfd, (asection *) NULL,
- (bfd_vma) 0);
- ASSERT (ret);
- free (msg);
-
- /* Clobber the section size, so that we don't waste copying the
- warning into the output file. */
- s->_raw_size = 0;
- }
- }
-
-#if defined (TARGET_IS_elf32bmip) || defined (TARGET_IS_elf32lmip) || defined (TARGET_IS_elf32arc)
- /* For MIPS ELF the .reginfo section requires special handling.
- Each input section is 24 bytes, and the final output section must
- also be 24 bytes. We handle this by clobbering all but the first
- input section size to 0. The .reginfo section is handled
- specially by the backend code anyhow. */
- {
- boolean found = false;
- LANG_FOR_EACH_INPUT_STATEMENT (is)
- {
- asection *s;
-
- if (is->just_syms_flag)
- continue;
-
- s = bfd_get_section_by_name (is->the_bfd, ".reginfo");
- if (s == NULL)
- continue;
-
- if (! found)
- {
- found = true;
- continue;
- }
-
- s->_raw_size = 0;
- s->_cooked_size = 0;
- }
- }
-#endif
-}
-
-/* This is called by the before_allocation routine via
- lang_for_each_statement. It locates any assignment statements, and
- tells the ELF backend about them, in case they are assignments to
- symbols which are referred to by dynamic objects. */
-
-static void
-gld${EMULATION_NAME}_find_statement_assignment (s)
- lang_statement_union_type *s;
-{
- if (s->header.type == lang_assignment_statement_enum)
- gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
-}
-
-/* Look through an expression for an assignment statement. */
-
-static void
-gld${EMULATION_NAME}_find_exp_assignment (exp)
- etree_type *exp;
-{
- struct bfd_link_hash_entry *h;
-
- switch (exp->type.node_class)
- {
- case etree_provide:
- h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst,
- false, false, false);
- if (h == NULL)
- break;
-
- /* We call record_link_assignment even if the symbol is defined.
- This is because if it is defined by a dynamic object, we
- actually want to use the value defined by the linker script,
- not the value from the dynamic object (because we are setting
- symbols like etext). If the symbol is defined by a regular
- object, then, as it happens, calling record_link_assignment
- will do no harm. */
-
- /* Fall through. */
- case etree_assign:
- if (strcmp (exp->assign.dst, ".") != 0)
- {
- if (! (bfd_elf${ELFSIZE}_record_link_assignment
- (output_bfd, &link_info, exp->assign.dst,
- exp->type.node_class == etree_provide ? true : false)))
- einfo ("%P%F: failed to record assignment to %s: %E\n",
- exp->assign.dst);
- }
- gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
- break;
-
- case etree_binary:
- gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
- gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
- break;
-
- case etree_trinary:
- gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
- gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
- gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
- break;
-
- case etree_unary:
- gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
- break;
-
- default:
- break;
- }
-}
-
-/* Place an orphan section. We use this to put random SHF_ALLOC
- sections in the right segment. */
-
-static asection *hold_section;
-static lang_output_section_statement_type *hold_use;
-static lang_output_section_statement_type *hold_text;
-static lang_output_section_statement_type *hold_rodata;
-static lang_output_section_statement_type *hold_data;
-static lang_output_section_statement_type *hold_bss;
-static lang_output_section_statement_type *hold_rel;
-
-/*ARGSUSED*/
-static boolean
-gld${EMULATION_NAME}_place_orphan (file, s)
- lang_input_statement_type *file;
- asection *s;
-{
- lang_output_section_statement_type *place;
- asection *snew, **pps;
- lang_statement_list_type *old;
- lang_statement_list_type add;
- etree_type *address;
- const char *secname, *ps;
- lang_output_section_statement_type *os;
-
- if ((s->flags & SEC_ALLOC) == 0)
- return false;
-
- /* Look through the script to see where to place this section. */
- hold_section = s;
- hold_use = NULL;
- lang_for_each_statement (gld${EMULATION_NAME}_place_section);
-
- if (hold_use != NULL)
- {
- /* We have already placed a section with this name. */
- wild_doit (&hold_use->children, s, hold_use, file);
- return true;
- }
-
- secname = bfd_get_section_name (s->owner, s);
-
- /* If this is a final link, then always put .gnu.warning.SYMBOL
- sections into the .text section to get them out of the way. */
- if (! link_info.shared
- && ! link_info.relocateable
- && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0
- && hold_text != NULL)
- {
- wild_doit (&hold_text->children, s, hold_text, file);
- return true;
- }
-
- /* Decide which segment the section should go in based on the
- section name and section flags. */
- place = NULL;
- if ((s->flags & SEC_HAS_CONTENTS) == 0
- && hold_bss != NULL)
- place = hold_bss;
- else if ((s->flags & SEC_READONLY) == 0
- && hold_data != NULL)
- place = hold_data;
- else if (strncmp (secname, ".rel", 4) == 0
- && hold_rel != NULL)
- place = hold_rel;
- else if ((s->flags & SEC_CODE) == 0
- && (s->flags & SEC_READONLY) != 0
- && hold_rodata != NULL)
- place = hold_rodata;
- else if ((s->flags & SEC_READONLY) != 0
- && hold_text != NULL)
- place = hold_text;
- if (place == NULL)
- return false;
-
- /* Create the section in the output file, and put it in the right
- place. This shuffling is to make the output file look neater. */
- snew = bfd_make_section (output_bfd, secname);
- if (snew == NULL)
- einfo ("%P%F: output format %s cannot represent section called %s\n",
- output_bfd->xvec->name, secname);
- if (place->bfd_section != NULL)
- {
- for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
- ;
- *pps = snew->next;
- snew->next = place->bfd_section->next;
- place->bfd_section->next = snew;
- }
-
- /* Start building a list of statements for this section. */
- old = stat_ptr;
- stat_ptr = &add;
- lang_list_init (stat_ptr);
-
- /* If the name of the section is representable in C, then create
- symbols to mark the start and the end of the section. */
- for (ps = secname; *ps != '\0'; ps++)
- if (! isalnum (*ps) && *ps != '_')
- break;
- if (*ps == '\0' && config.build_constructors)
- {
- char *symname;
-
- symname = (char *) xmalloc (ps - secname + sizeof "__start_");
- sprintf (symname, "__start_%s", secname);
- lang_add_assignment (exp_assop ('=', symname,
- exp_unop (ALIGN_K,
- exp_intop ((bfd_vma) 1
- << s->alignment_power))));
- }
-
- if (! link_info.relocateable)
- address = NULL;
- else
- address = exp_intop ((bfd_vma) 0);
-
- lang_enter_output_section_statement (secname, address, 0,
- (bfd_vma) 0,
- (etree_type *) NULL,
- (etree_type *) NULL,
- (etree_type *) NULL);
-
- os = lang_output_section_statement_lookup (secname);
- wild_doit (&os->children, s, os, file);
-
- lang_leave_output_section_statement
- ((bfd_vma) 0, "*default*", (struct lang_output_section_phdr_list *) NULL);
- stat_ptr = &add;
-
- if (*ps == '\0' && config.build_constructors)
- {
- char *symname;
-
- symname = (char *) xmalloc (ps - secname + sizeof "__stop_");
- sprintf (symname, "__stop_%s", secname);
- lang_add_assignment (exp_assop ('=', symname,
- exp_nameop (NAME, ".")));
- }
-
- /* Now stick the new statement list right after PLACE. */
- *add.tail = place->header.next;
- place->header.next = add.head;
-
- stat_ptr = old;
-
- return true;
-}
-
-static void
-gld${EMULATION_NAME}_place_section (s)
- lang_statement_union_type *s;
-{
- lang_output_section_statement_type *os;
-
- if (s->header.type != lang_output_section_statement_enum)
- return;
-
- os = &s->output_section_statement;
-
- if (strcmp (os->name, hold_section->name) == 0)
- hold_use = os;
-
- if (strcmp (os->name, ".text") == 0)
- hold_text = os;
- else if (strcmp (os->name, ".rodata") == 0)
- hold_rodata = os;
- else if (strcmp (os->name, ".data") == 0)
- hold_data = os;
- else if (strcmp (os->name, ".bss") == 0)
- hold_bss = os;
- else if (hold_rel == NULL
- && os->bfd_section != NULL
- && strncmp (os->name, ".rel", 4) == 0)
- hold_rel = os;
-}
-
-static char *
-gld${EMULATION_NAME}_get_script(isfile)
- int *isfile;
-EOF
-
-if test -n "$COMPILE_IN"
-then
-# Scripts compiled in.
-
-# sed commands to quote an ld script as a C string.
-sc='s/["\\]/\\&/g
-s/$/\\n\\/
-1s/^/"/
-$s/$/n"/
-'
-
-cat >>e${EMULATION_NAME}.c <<EOF
-{
- *isfile = 0;
-
- if (link_info.relocateable == true && config.build_constructors == true)
- return `sed "$sc" ldscripts/${EMULATION_NAME}.xu`;
- else if (link_info.relocateable == true)
- return `sed "$sc" ldscripts/${EMULATION_NAME}.xr`;
- else if (!config.text_read_only)
- return `sed "$sc" ldscripts/${EMULATION_NAME}.xbn`;
- else if (!config.magic_demand_paged)
- return `sed "$sc" ldscripts/${EMULATION_NAME}.xn`;
- else if (link_info.shared)
- return `sed "$sc" ldscripts/${EMULATION_NAME}.xs`;
- else
- return `sed "$sc" ldscripts/${EMULATION_NAME}.x`;
-}
-EOF
-
-else
-# Scripts read from the filesystem.
-
-cat >>e${EMULATION_NAME}.c <<EOF
-{
- *isfile = 1;
-
- if (link_info.relocateable == true && config.build_constructors == true)
- return "ldscripts/${EMULATION_NAME}.xu";
- else if (link_info.relocateable == true)
- return "ldscripts/${EMULATION_NAME}.xr";
- else if (!config.text_read_only)
- return "ldscripts/${EMULATION_NAME}.xbn";
- else if (!config.magic_demand_paged)
- return "ldscripts/${EMULATION_NAME}.xn";
- else if (link_info.shared)
- return "ldscripts/${EMULATION_NAME}.xs";
- else
- return "ldscripts/${EMULATION_NAME}.x";
-}
-EOF
-
-fi
-
-cat >>e${EMULATION_NAME}.c <<EOF
-
-struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
-{
- gld${EMULATION_NAME}_before_parse,
- syslib_default,
- hll_default,
- after_parse_default,
- gld${EMULATION_NAME}_after_open,
- after_allocation_default,
- set_output_arch_default,
- ldemul_default_target,
- gld${EMULATION_NAME}_before_allocation,
- gld${EMULATION_NAME}_get_script,
- "${EMULATION_NAME}",
- "${OUTPUT_FORMAT}",
- NULL,
- NULL,
- gld${EMULATION_NAME}_open_dynamic_archive,
- gld${EMULATION_NAME}_place_orphan
-};
-EOF
--- /dev/null
+# This shell script emits a C file. -*- C -*-
+# It does some substitutions.
+# This file is now misnamed, because it supports both 32 bit and 64 bit
+# ELF emulations.
+test -z "${ELFSIZE}" && ELFSIZE=32
+cat >e${EMULATION_NAME}.c <<EOF
+/* This file is is generated by a shell script. DO NOT EDIT! */
+
+/* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
+ Copyright (C) 1991, 93, 94, 95, 1996 Free Software Foundation, Inc.
+ Written by Steve Chamberlain <sac@cygnus.com>
+ ELF support by Ian Lance Taylor <ian@cygnus.com>
+
+This file is part of GLD, the Gnu Linker.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#define TARGET_IS_${EMULATION_NAME}
+
+#include "bfd.h"
+#include "sysdep.h"
+
+#include <ctype.h>
+#include <dirent.h>
+
+#include "bfdlink.h"
+
+#include "ld.h"
+#include "ldmain.h"
+#include "ldemul.h"
+#include "ldfile.h"
+#include "ldmisc.h"
+#include "ldexp.h"
+#include "ldlang.h"
+#include "ldgram.h"
+
+static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
+static boolean gld${EMULATION_NAME}_open_dynamic_archive
+ PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
+static void gld${EMULATION_NAME}_after_open PARAMS ((void));
+static void gld${EMULATION_NAME}_check_needed
+ PARAMS ((lang_input_statement_type *));
+static void gld${EMULATION_NAME}_stat_needed
+ PARAMS ((lang_input_statement_type *));
+static boolean gld${EMULATION_NAME}_search_needed
+ PARAMS ((const char *, const char *));
+static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *));
+static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
+static void gld${EMULATION_NAME}_find_statement_assignment
+ PARAMS ((lang_statement_union_type *));
+static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *));
+static boolean gld${EMULATION_NAME}_place_orphan
+ PARAMS ((lang_input_statement_type *, asection *));
+static void gld${EMULATION_NAME}_place_section
+ PARAMS ((lang_statement_union_type *));
+static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));
+
+static void
+gld${EMULATION_NAME}_before_parse()
+{
+ ldfile_output_architecture = bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`;
+ config.dynamic_link = ${DYNAMIC_LINK-true};
+}
+
+/* Try to open a dynamic archive. This is where we know that ELF
+ dynamic libraries have an extension of .so. */
+/* Library not found as plain .so. Scan version numbers. Note that so.1 is
+ prefered before so.1.n because the first form is assumed to be a symlink
+ created by ldconfig to the configured version */
+static char *
+findshlib(arch, search, entry)
+ const char *arch;
+ search_dirs_type *search;
+ lang_input_statement_type *entry;
+{
+ DIR *dd = opendir(search->name);
+ struct dirent *dp;
+ char *string;
+ int len;
+ int version = -1;
+ int subversion = -1;
+
+
+ if(dd == NULL)
+ return(NULL);
+
+ string = (char *)xmalloc(strlen (search->name)
+ + strlen (entry->filename)
+ + strlen (arch)
+ + sizeof "/lib.so."
+ + 16); /* XXX 16 would be sufficient for a version no */
+ sprintf(string, "lib%s%s.so.", entry->filename, arch);
+ len = strlen(string);
+
+ while((dp = readdir(dd)) != NULL) {
+ if(dp->d_namlen < len)
+ continue;
+ if(strncmp(string, dp->d_name, len) == 0) {
+ char *cp = &dp->d_name[len];
+ int v;
+ if(!isdigit(*cp))
+ continue;
+ v = strtol(cp, &cp, 10);
+ if(*cp == 0 && v >= version) {
+ version = v;
+ subversion = -1;
+ }
+ if(*cp++ == '.' && v > version) {
+ version = v;
+ subversion = strtol(cp, &cp, 10);
+ }
+ }
+ }
+ closedir(dd);
+
+ if(version < 0) {
+ free(string);
+ return(NULL);
+ }
+ if(subversion < 0)
+ sprintf (string, "%s/lib%s%s.so.%d", search->name, entry->filename, arch, version);
+ else
+ sprintf (string, "%s/lib%s%s.so.%d.%d", search->name, entry->filename, arch, version, subversion);
+ return(string);
+}
+
+static boolean
+gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
+ const char *arch;
+ search_dirs_type *search;
+ lang_input_statement_type *entry;
+{
+ const char *filename;
+ char *string;
+
+ if (! entry->is_archive)
+ return false;
+
+ filename = entry->filename;
+
+ string = (char *) xmalloc (strlen (search->name)
+ + strlen (filename)
+ + strlen (arch)
+ + sizeof "/lib.so");
+
+ sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
+
+ if (! ldfile_try_open_bfd (string, entry))
+ {
+ free (string);
+ string = findshlib(arch, search, entry);
+ if(!string || !ldfile_try_open_bfd (string, entry)) {
+ free (string);
+ return false;
+ }
+ }
+
+ entry->filename = string;
+
+ /* We have found a dynamic object to include in the link. The ELF
+ backend linker will create a DT_NEEDED entry in the .dynamic
+ section naming this file. If this file includes a DT_SONAME
+ entry, it will be used. Otherwise, the ELF linker will just use
+ the name of the file. For an archive found by searching, like
+ this one, the DT_NEEDED entry should consist of just the name of
+ the file, without the path information used to find it. Note
+ that we only need to do this if we have a dynamic object; an
+ archive will never be referenced by a DT_NEEDED entry.
+
+ FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
+ very pretty. I haven't been able to think of anything that is
+ pretty, though. */
+ if (bfd_check_format (entry->the_bfd, bfd_object)
+ && (entry->the_bfd->flags & DYNAMIC) != 0)
+ {
+ char *needed_name;
+
+ ASSERT (entry->is_archive && entry->search_dirs_flag);
+ needed_name = (char *) xmalloc (strlen (filename)
+ + strlen (arch)
+ + sizeof "lib.so");
+ sprintf (needed_name, "lib%s%s.so", filename, arch);
+ bfd_elf_set_dt_needed_name (entry->the_bfd, needed_name);
+ }
+
+ return true;
+}
+
+EOF
+if [ "x${host}" = "x${target}" ] ; then
+ if [ "x${DEFAULT_EMULATION}" = "x${EMULATION_NAME}" ] ; then
+cat >>e${EMULATION_NAME}.c <<EOF
+
+/* For a native linker, check the file /etc/ld.so.conf for directories
+ in which we may find shared libraries. /etc/ld.so.conf is really
+ only meaningful on Linux, but we check it on other systems anyhow. */
+
+static boolean gld${EMULATION_NAME}_check_ld_so_conf PARAMS ((const char *));
+
+static boolean
+gld${EMULATION_NAME}_check_ld_so_conf (name)
+ const char *name;
+{
+ static boolean initialized;
+ static char *ld_so_conf;
+
+ if (! initialized)
+ {
+ FILE *f;
+
+ f = fopen ("/etc/ld.so.conf", FOPEN_RT);
+ if (f != NULL)
+ {
+ char *b;
+ size_t len, alloc;
+ int c;
+
+ len = 0;
+ alloc = 100;
+ b = (char *) xmalloc (alloc);
+
+ while ((c = getc (f)) != EOF)
+ {
+ if (len + 1 >= alloc)
+ {
+ alloc *= 2;
+ b = (char *) xrealloc (b, alloc);
+ }
+ if (c != ':'
+ && c != ' '
+ && c != '\t'
+ && c != '\n'
+ && c != ',')
+ {
+ b[len] = c;
+ ++len;
+ }
+ else
+ {
+ if (len > 0 && b[len - 1] != ':')
+ {
+ b[len] = ':';
+ ++len;
+ }
+ }
+ }
+
+ if (len > 0 && b[len - 1] == ':')
+ --len;
+
+ if (len > 0)
+ b[len] = '\0';
+ else
+ {
+ free (b);
+ b = NULL;
+ }
+
+ fclose (f);
+
+ ld_so_conf = b;
+ }
+
+ initialized = true;
+ }
+
+ if (ld_so_conf == NULL)
+ return false;
+
+ return gld${EMULATION_NAME}_search_needed (ld_so_conf, name);
+}
+
+EOF
+ fi
+fi
+cat >>e${EMULATION_NAME}.c <<EOF
+
+/* These variables are required to pass information back and forth
+ between after_open and check_needed and stat_needed. */
+
+static struct bfd_link_needed_list *global_needed;
+static struct stat global_stat;
+static boolean global_found;
+
+/* This is called after all the input files have been opened. */
+
+static void
+gld${EMULATION_NAME}_after_open ()
+{
+ struct bfd_link_needed_list *needed, *l;
+
+ /* We only need to worry about this when doing a final link. */
+ if (link_info.relocateable || link_info.shared)
+ return;
+
+ /* Get the list of files which appear in DT_NEEDED entries in
+ dynamic objects included in the link (often there will be none).
+ For each such file, we want to track down the corresponding
+ library, and include the symbol table in the link. This is what
+ the runtime dynamic linker will do. Tracking the files down here
+ permits one dynamic object to include another without requiring
+ special action by the person doing the link. Note that the
+ needed list can actually grow while we are stepping through this
+ loop. */
+ needed = bfd_elf_get_needed_list (output_bfd, &link_info);
+ for (l = needed; l != NULL; l = l->next)
+ {
+ struct bfd_link_needed_list *ll;
+ const char *lib_path;
+ size_t len;
+ search_dirs_type *search;
+
+ /* If we've already seen this file, skip it. */
+ for (ll = needed; ll != l; ll = ll->next)
+ if (strcmp (ll->name, l->name) == 0)
+ break;
+ if (ll != l)
+ continue;
+
+ /* See if this file was included in the link explicitly. */
+ global_needed = l;
+ global_found = false;
+ lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
+ if (global_found)
+ continue;
+
+ /* We need to find this file and include the symbol table. We
+ want to search for the file in the same way that the dynamic
+ linker will search. That means that we want to use
+ rpath_link, rpath, then the environment variable
+ LD_LIBRARY_PATH (native only), then the linker script
+ LIB_SEARCH_DIRS. We do not search using the -L arguments. */
+ if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
+ l->name))
+ continue;
+ if (gld${EMULATION_NAME}_search_needed (command_line.rpath, l->name))
+ continue;
+ if (command_line.rpath_link == NULL
+ && command_line.rpath == NULL)
+ {
+ lib_path = (const char *) getenv ("LD_RUN_PATH");
+ if (gld${EMULATION_NAME}_search_needed (lib_path, l->name))
+ continue;
+ }
+EOF
+if [ "x${host}" = "x${target}" ] ; then
+ if [ "x${DEFAULT_EMULATION}" = "x${EMULATION_NAME}" ] ; then
+cat >>e${EMULATION_NAME}.c <<EOF
+ lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
+ if (gld${EMULATION_NAME}_search_needed (lib_path, l->name))
+ continue;
+EOF
+ fi
+fi
+cat >>e${EMULATION_NAME}.c <<EOF
+ len = strlen (l->name);
+ for (search = search_head; search != NULL; search = search->next)
+ {
+ char *filename;
+
+ if (search->cmdline)
+ continue;
+ filename = (char *) xmalloc (strlen (search->name) + len + 2);
+ sprintf (filename, "%s/%s", search->name, l->name);
+ if (gld${EMULATION_NAME}_try_needed (filename))
+ break;
+ free (filename);
+ }
+ if (search != NULL)
+ continue;
+EOF
+if [ "x${host}" = "x${target}" ] ; then
+ if [ "x${DEFAULT_EMULATION}" = "x${EMULATION_NAME}" ] ; then
+cat >>e${EMULATION_NAME}.c <<EOF
+ if (gld${EMULATION_NAME}_check_ld_so_conf (l->name))
+ continue;
+EOF
+ fi
+fi
+cat >>e${EMULATION_NAME}.c <<EOF
+
+ einfo ("%P: warning: %s, needed by %B, not found\n",
+ l->name, l->by);
+ }
+}
+
+/* Search for a needed file in a path. */
+
+static boolean
+gld${EMULATION_NAME}_search_needed (path, name)
+ const char *path;
+ const char *name;
+{
+ const char *s;
+ size_t len;
+
+ if (path == NULL || *path == '\0')
+ return false;
+ len = strlen (name);
+ while (1)
+ {
+ char *filename, *sset;
+
+ s = strchr (path, ':');
+ if (s == NULL)
+ s = path + strlen (path);
+
+ filename = (char *) xmalloc (s - path + len + 2);
+ if (s == path)
+ sset = filename;
+ else
+ {
+ memcpy (filename, path, s - path);
+ filename[s - path] = '/';
+ sset = filename + (s - path) + 1;
+ }
+ strcpy (sset, name);
+
+ if (gld${EMULATION_NAME}_try_needed (filename))
+ return true;
+
+ free (filename);
+
+ if (*s == '\0')
+ break;
+ path = s + 1;
+ }
+
+ return false;
+}
+
+/* This function is called for each possible name for a dynamic object
+ named by a DT_NEEDED entry. */
+
+static boolean
+gld${EMULATION_NAME}_try_needed (name)
+ const char *name;
+{
+ bfd *abfd;
+
+ abfd = bfd_openr (name, bfd_get_target (output_bfd));
+ if (abfd == NULL)
+ return false;
+ if (! bfd_check_format (abfd, bfd_object))
+ {
+ (void) bfd_close (abfd);
+ return false;
+ }
+ if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
+ {
+ (void) bfd_close (abfd);
+ return false;
+ }
+
+ /* We've found a dynamic object matching the DT_NEEDED entry. */
+
+ /* We have already checked that there is no other input file of the
+ same name. We must now check again that we are not including the
+ same file twice. We need to do this because on many systems
+ libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
+ reference libc.so.1. If we have already included libc.so, we
+ don't want to include libc.so.1 if they are the same file, and we
+ can only check that using stat. */
+
+ if (bfd_stat (abfd, &global_stat) != 0)
+ einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
+ global_found = false;
+ lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
+ if (global_found)
+ {
+ /* Return true to indicate that we found the file, even though
+ we aren't going to do anything with it. */
+ return true;
+ }
+
+ /* Tell the ELF backend that don't want the output file to have a
+ DT_NEEDED entry for this file. */
+ bfd_elf_set_dt_needed_name (abfd, "");
+
+ /* Add this file into the symbol table. */
+ if (! bfd_link_add_symbols (abfd, &link_info))
+ einfo ("%F%B: could not read symbols: %E\n", abfd);
+
+ return true;
+}
+
+/* See if an input file matches a DT_NEEDED entry by name. */
+
+static void
+gld${EMULATION_NAME}_check_needed (s)
+ lang_input_statement_type *s;
+{
+ if (global_found)
+ return;
+
+ if (s->filename != NULL
+ && strcmp (s->filename, global_needed->name) == 0)
+ {
+ global_found = true;
+ return;
+ }
+
+ if (s->the_bfd != NULL)
+ {
+ const char *soname;
+
+ soname = bfd_elf_get_dt_soname (s->the_bfd);
+ if (soname != NULL
+ && strcmp (soname, global_needed->name) == 0)
+ {
+ global_found = true;
+ return;
+ }
+ }
+
+ if (s->search_dirs_flag
+ && s->filename != NULL
+ && strchr (global_needed->name, '/') == NULL)
+ {
+ const char *f;
+
+ f = strrchr (s->filename, '/');
+ if (f != NULL
+ && strcmp (f + 1, global_needed->name) == 0)
+ {
+ global_found = true;
+ return;
+ }
+ }
+}
+
+/* See if an input file matches a DT_NEEDED entry by running stat on
+ the file. */
+
+static void
+gld${EMULATION_NAME}_stat_needed (s)
+ lang_input_statement_type *s;
+{
+ struct stat st;
+ const char *suffix;
+ const char *soname;
+ const char *f;
+
+ if (global_found)
+ return;
+ if (s->the_bfd == NULL)
+ return;
+
+ if (bfd_stat (s->the_bfd, &st) != 0)
+ {
+ einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
+ return;
+ }
+
+ if (st.st_dev == global_stat.st_dev
+ && st.st_ino == global_stat.st_ino)
+ {
+ global_found = true;
+ return;
+ }
+
+ /* We issue a warning if it looks like we are including two
+ different versions of the same shared library. For example,
+ there may be a problem if -lc picks up libc.so.6 but some other
+ shared library has a DT_NEEDED entry of libc.so.5. This is a
+ hueristic test, and it will only work if the name looks like
+ NAME.so.VERSION. FIXME: Depending on file names is error-prone.
+ If we really want to issue warnings about mixing version numbers
+ of shared libraries, we need to find a better way. */
+
+ if (strchr (global_needed->name, '/') != NULL)
+ return;
+ suffix = strstr (global_needed->name, ".so.");
+ if (suffix == NULL)
+ return;
+ suffix += sizeof ".so." - 1;
+
+ soname = bfd_elf_get_dt_soname (s->the_bfd);
+ if (soname == NULL)
+ soname = s->filename;
+
+ f = strrchr (soname, '/');
+ if (f != NULL)
+ ++f;
+ else
+ f = soname;
+
+ if (strncmp (f, global_needed->name, suffix - global_needed->name) == 0)
+ einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
+ global_needed->name, global_needed->by, f);
+}
+
+/* This is called after the sections have been attached to output
+ sections, but before any sizes or addresses have been set. */
+
+static void
+gld${EMULATION_NAME}_before_allocation ()
+{
+ const char *rpath;
+ asection *sinterp;
+
+ /* If we are going to make any variable assignments, we need to let
+ the ELF backend know about them in case the variables are
+ referred to by dynamic objects. */
+ lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
+
+ /* Let the ELF backend work out the sizes of any sections required
+ by dynamic linking. */
+ rpath = command_line.rpath;
+ if (rpath == NULL)
+ rpath = (const char *) getenv ("LD_RUN_PATH");
+ if (! bfd_elf${ELFSIZE}_size_dynamic_sections (output_bfd,
+ command_line.soname,
+ rpath,
+ command_line.export_dynamic,
+ &link_info,
+ &sinterp))
+ einfo ("%P%F: failed to set dynamic section sizes: %E\n");
+
+ /* Let the user override the dynamic linker we are using. */
+ if (command_line.interpreter != NULL
+ && sinterp != NULL)
+ {
+ sinterp->contents = (bfd_byte *) command_line.interpreter;
+ sinterp->_raw_size = strlen (command_line.interpreter) + 1;
+ }
+
+ /* Look for any sections named .gnu.warning. As a GNU extensions,
+ we treat such sections as containing warning messages. We print
+ out the warning message, and then zero out the section size so
+ that it does not get copied into the output file. */
+
+ {
+ LANG_FOR_EACH_INPUT_STATEMENT (is)
+ {
+ asection *s;
+ bfd_size_type sz;
+ char *msg;
+ boolean ret;
+
+ if (is->just_syms_flag)
+ continue;
+
+ s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
+ if (s == NULL)
+ continue;
+
+ sz = bfd_section_size (is->the_bfd, s);
+ msg = xmalloc ((size_t) sz + 1);
+ if (! bfd_get_section_contents (is->the_bfd, s, msg, (file_ptr) 0, sz))
+ einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
+ is->the_bfd);
+ msg[sz] = '\0';
+ ret = link_info.callbacks->warning (&link_info, msg,
+ (const char *) NULL,
+ is->the_bfd, (asection *) NULL,
+ (bfd_vma) 0);
+ ASSERT (ret);
+ free (msg);
+
+ /* Clobber the section size, so that we don't waste copying the
+ warning into the output file. */
+ s->_raw_size = 0;
+ }
+ }
+
+#if defined (TARGET_IS_elf32bmip) || defined (TARGET_IS_elf32lmip) || defined (TARGET_IS_elf32arc)
+ /* For MIPS ELF the .reginfo section requires special handling.
+ Each input section is 24 bytes, and the final output section must
+ also be 24 bytes. We handle this by clobbering all but the first
+ input section size to 0. The .reginfo section is handled
+ specially by the backend code anyhow. */
+ {
+ boolean found = false;
+ LANG_FOR_EACH_INPUT_STATEMENT (is)
+ {
+ asection *s;
+
+ if (is->just_syms_flag)
+ continue;
+
+ s = bfd_get_section_by_name (is->the_bfd, ".reginfo");
+ if (s == NULL)
+ continue;
+
+ if (! found)
+ {
+ found = true;
+ continue;
+ }
+
+ s->_raw_size = 0;
+ s->_cooked_size = 0;
+ }
+ }
+#endif
+}
+
+/* This is called by the before_allocation routine via
+ lang_for_each_statement. It locates any assignment statements, and
+ tells the ELF backend about them, in case they are assignments to
+ symbols which are referred to by dynamic objects. */
+
+static void
+gld${EMULATION_NAME}_find_statement_assignment (s)
+ lang_statement_union_type *s;
+{
+ if (s->header.type == lang_assignment_statement_enum)
+ gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
+}
+
+/* Look through an expression for an assignment statement. */
+
+static void
+gld${EMULATION_NAME}_find_exp_assignment (exp)
+ etree_type *exp;
+{
+ struct bfd_link_hash_entry *h;
+
+ switch (exp->type.node_class)
+ {
+ case etree_provide:
+ h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst,
+ false, false, false);
+ if (h == NULL)
+ break;
+
+ /* We call record_link_assignment even if the symbol is defined.
+ This is because if it is defined by a dynamic object, we
+ actually want to use the value defined by the linker script,
+ not the value from the dynamic object (because we are setting
+ symbols like etext). If the symbol is defined by a regular
+ object, then, as it happens, calling record_link_assignment
+ will do no harm. */
+
+ /* Fall through. */
+ case etree_assign:
+ if (strcmp (exp->assign.dst, ".") != 0)
+ {
+ if (! (bfd_elf${ELFSIZE}_record_link_assignment
+ (output_bfd, &link_info, exp->assign.dst,
+ exp->type.node_class == etree_provide ? true : false)))
+ einfo ("%P%F: failed to record assignment to %s: %E\n",
+ exp->assign.dst);
+ }
+ gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
+ break;
+
+ case etree_binary:
+ gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
+ gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
+ break;
+
+ case etree_trinary:
+ gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
+ gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
+ gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
+ break;
+
+ case etree_unary:
+ gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
+ break;
+
+ default:
+ break;
+ }
+}
+
+/* Place an orphan section. We use this to put random SHF_ALLOC
+ sections in the right segment. */
+
+static asection *hold_section;
+static lang_output_section_statement_type *hold_use;
+static lang_output_section_statement_type *hold_text;
+static lang_output_section_statement_type *hold_rodata;
+static lang_output_section_statement_type *hold_data;
+static lang_output_section_statement_type *hold_bss;
+static lang_output_section_statement_type *hold_rel;
+
+/*ARGSUSED*/
+static boolean
+gld${EMULATION_NAME}_place_orphan (file, s)
+ lang_input_statement_type *file;
+ asection *s;
+{
+ lang_output_section_statement_type *place;
+ asection *snew, **pps;
+ lang_statement_list_type *old;
+ lang_statement_list_type add;
+ etree_type *address;
+ const char *secname, *ps;
+ lang_output_section_statement_type *os;
+
+ if ((s->flags & SEC_ALLOC) == 0)
+ return false;
+
+ /* Look through the script to see where to place this section. */
+ hold_section = s;
+ hold_use = NULL;
+ lang_for_each_statement (gld${EMULATION_NAME}_place_section);
+
+ if (hold_use != NULL)
+ {
+ /* We have already placed a section with this name. */
+ wild_doit (&hold_use->children, s, hold_use, file);
+ return true;
+ }
+
+ secname = bfd_get_section_name (s->owner, s);
+
+ /* If this is a final link, then always put .gnu.warning.SYMBOL
+ sections into the .text section to get them out of the way. */
+ if (! link_info.shared
+ && ! link_info.relocateable
+ && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0
+ && hold_text != NULL)
+ {
+ wild_doit (&hold_text->children, s, hold_text, file);
+ return true;
+ }
+
+ /* Decide which segment the section should go in based on the
+ section name and section flags. */
+ place = NULL;
+ if ((s->flags & SEC_HAS_CONTENTS) == 0
+ && hold_bss != NULL)
+ place = hold_bss;
+ else if ((s->flags & SEC_READONLY) == 0
+ && hold_data != NULL)
+ place = hold_data;
+ else if (strncmp (secname, ".rel", 4) == 0
+ && hold_rel != NULL)
+ place = hold_rel;
+ else if ((s->flags & SEC_CODE) == 0
+ && (s->flags & SEC_READONLY) != 0
+ && hold_rodata != NULL)
+ place = hold_rodata;
+ else if ((s->flags & SEC_READONLY) != 0
+ && hold_text != NULL)
+ place = hold_text;
+ if (place == NULL)
+ return false;
+
+ /* Create the section in the output file, and put it in the right
+ place. This shuffling is to make the output file look neater. */
+ snew = bfd_make_section (output_bfd, secname);
+ if (snew == NULL)
+ einfo ("%P%F: output format %s cannot represent section called %s\n",
+ output_bfd->xvec->name, secname);
+ if (place->bfd_section != NULL)
+ {
+ for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
+ ;
+ *pps = snew->next;
+ snew->next = place->bfd_section->next;
+ place->bfd_section->next = snew;
+ }
+
+ /* Start building a list of statements for this section. */
+ old = stat_ptr;
+ stat_ptr = &add;
+ lang_list_init (stat_ptr);
+
+ /* If the name of the section is representable in C, then create
+ symbols to mark the start and the end of the section. */
+ for (ps = secname; *ps != '\0'; ps++)
+ if (! isalnum (*ps) && *ps != '_')
+ break;
+ if (*ps == '\0' && config.build_constructors)
+ {
+ char *symname;
+
+ symname = (char *) xmalloc (ps - secname + sizeof "__start_");
+ sprintf (symname, "__start_%s", secname);
+ lang_add_assignment (exp_assop ('=', symname,
+ exp_unop (ALIGN_K,
+ exp_intop ((bfd_vma) 1
+ << s->alignment_power))));
+ }
+
+ if (! link_info.relocateable)
+ address = NULL;
+ else
+ address = exp_intop ((bfd_vma) 0);
+
+ lang_enter_output_section_statement (secname, address, 0,
+ (bfd_vma) 0,
+ (etree_type *) NULL,
+ (etree_type *) NULL,
+ (etree_type *) NULL);
+
+ os = lang_output_section_statement_lookup (secname);
+ wild_doit (&os->children, s, os, file);
+
+ lang_leave_output_section_statement
+ ((bfd_vma) 0, "*default*", (struct lang_output_section_phdr_list *) NULL);
+ stat_ptr = &add;
+
+ if (*ps == '\0' && config.build_constructors)
+ {
+ char *symname;
+
+ symname = (char *) xmalloc (ps - secname + sizeof "__stop_");
+ sprintf (symname, "__stop_%s", secname);
+ lang_add_assignment (exp_assop ('=', symname,
+ exp_nameop (NAME, ".")));
+ }
+
+ /* Now stick the new statement list right after PLACE. */
+ *add.tail = place->header.next;
+ place->header.next = add.head;
+
+ stat_ptr = old;
+
+ return true;
+}
+
+static void
+gld${EMULATION_NAME}_place_section (s)
+ lang_statement_union_type *s;
+{
+ lang_output_section_statement_type *os;
+
+ if (s->header.type != lang_output_section_statement_enum)
+ return;
+
+ os = &s->output_section_statement;
+
+ if (strcmp (os->name, hold_section->name) == 0)
+ hold_use = os;
+
+ if (strcmp (os->name, ".text") == 0)
+ hold_text = os;
+ else if (strcmp (os->name, ".rodata") == 0)
+ hold_rodata = os;
+ else if (strcmp (os->name, ".data") == 0)
+ hold_data = os;
+ else if (strcmp (os->name, ".bss") == 0)
+ hold_bss = os;
+ else if (hold_rel == NULL
+ && os->bfd_section != NULL
+ && strncmp (os->name, ".rel", 4) == 0)
+ hold_rel = os;
+}
+
+static char *
+gld${EMULATION_NAME}_get_script(isfile)
+ int *isfile;
+EOF
+
+if test -n "$COMPILE_IN"
+then
+# Scripts compiled in.
+
+# sed commands to quote an ld script as a C string.
+sc='s/["\\]/\\&/g
+s/$/\\n\\/
+1s/^/"/
+$s/$/n"/
+'
+
+cat >>e${EMULATION_NAME}.c <<EOF
+{
+ *isfile = 0;
+
+ if (link_info.relocateable == true && config.build_constructors == true)
+ return `sed "$sc" ldscripts/${EMULATION_NAME}.xu`;
+ else if (link_info.relocateable == true)
+ return `sed "$sc" ldscripts/${EMULATION_NAME}.xr`;
+ else if (!config.text_read_only)
+ return `sed "$sc" ldscripts/${EMULATION_NAME}.xbn`;
+ else if (!config.magic_demand_paged)
+ return `sed "$sc" ldscripts/${EMULATION_NAME}.xn`;
+ else if (link_info.shared)
+ return `sed "$sc" ldscripts/${EMULATION_NAME}.xs`;
+ else
+ return `sed "$sc" ldscripts/${EMULATION_NAME}.x`;
+}
+EOF
+
+else
+# Scripts read from the filesystem.
+
+cat >>e${EMULATION_NAME}.c <<EOF
+{
+ *isfile = 1;
+
+ if (link_info.relocateable == true && config.build_constructors == true)
+ return "ldscripts/${EMULATION_NAME}.xu";
+ else if (link_info.relocateable == true)
+ return "ldscripts/${EMULATION_NAME}.xr";
+ else if (!config.text_read_only)
+ return "ldscripts/${EMULATION_NAME}.xbn";
+ else if (!config.magic_demand_paged)
+ return "ldscripts/${EMULATION_NAME}.xn";
+ else if (link_info.shared)
+ return "ldscripts/${EMULATION_NAME}.xs";
+ else
+ return "ldscripts/${EMULATION_NAME}.x";
+}
+EOF
+
+fi
+
+cat >>e${EMULATION_NAME}.c <<EOF
+
+struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
+{
+ gld${EMULATION_NAME}_before_parse,
+ syslib_default,
+ hll_default,
+ after_parse_default,
+ gld${EMULATION_NAME}_after_open,
+ after_allocation_default,
+ set_output_arch_default,
+ ldemul_default_target,
+ gld${EMULATION_NAME}_before_allocation,
+ gld${EMULATION_NAME}_get_script,
+ "${EMULATION_NAME}",
+ "${OUTPUT_FORMAT}",
+ NULL,
+ NULL,
+ gld${EMULATION_NAME}_open_dynamic_archive,
+ gld${EMULATION_NAME}_place_orphan
+};
+EOF
projects / openbsd / commitdiff