From: pefo Date: Sun, 13 Apr 1997 21:06:53 +0000 (+0000) Subject: More consistent MIPS config X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=c50852d9b59375aebea08d6c51268685e99b9010;p=openbsd More consistent MIPS config --- diff --git a/gnu/usr.bin/binutils/gas/configure b/gnu/usr.bin/binutils/gas/configure index 7ad68d81fcc..1b2484db4e2 100644 --- a/gnu/usr.bin/binutils/gas/configure +++ b/gnu/usr.bin/binutils/gas/configure @@ -843,7 +843,12 @@ for this_target in $target $canon_targets ; do # don't change em like *-*-bsd does mips-dec-netbsd*) fmt=elf targ=mips-lit endian=little ;; - mips-*-openbsd*) fmt=elf targ=mips-lit endian=little ;; + mips-*-openbsd*) fmt=elf + case "$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; } ;; diff --git a/gnu/usr.bin/binutils/ld/Makefile.in b/gnu/usr.bin/binutils/ld/Makefile.in index bb1781003da..50e26548648 100644 --- a/gnu/usr.bin/binutils/ld/Makefile.in +++ b/gnu/usr.bin/binutils/ld/Makefile.in @@ -213,7 +213,6 @@ ALL_EMULATIONS = \ edelta68.o \ eebmon29k.o \ eelf32_sparc.o \ - eelf32arc.o \ eelf32b4300.o \ eelf32bmip.o \ eelf32ebmip.o \ @@ -263,6 +262,8 @@ ALL_EMULATIONS = \ em88kbcs.o \ emipsbig.o \ emipsbsd.o \ + emipsel_obsd.o \ + emipseb_obsd.o \ emipsidt.o \ emipsidtl.o \ emipslit.o \ @@ -397,9 +398,6 @@ eebmon29k.c: $(srcdir)/emulparams/ebmon29k.sh \ 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)" @@ -550,6 +548,12 @@ emipsbig.c: $(srcdir)/emulparams/mipsbig.sh \ 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)" diff --git a/gnu/usr.bin/binutils/ld/configure.tgt b/gnu/usr.bin/binutils/ld/configure.tgt index 4260419a0c7..6f9f16570a6 100644 --- a/gnu/usr.bin/binutils/ld/configure.tgt +++ b/gnu/usr.bin/binutils/ld/configure.tgt @@ -126,8 +126,8 @@ mips*el-*-ecoff*) targ_emul=mipsidtl ;; 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 ;; diff --git a/gnu/usr.bin/binutils/ld/emulparams/mipseb_obsd.sh b/gnu/usr.bin/binutils/ld/emulparams/mipseb_obsd.sh new file mode 100644 index 00000000000..25cf9418cf3 --- /dev/null +++ b/gnu/usr.bin/binutils/ld/emulparams/mipseb_obsd.sh @@ -0,0 +1,27 @@ +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 diff --git a/gnu/usr.bin/binutils/ld/emulparams/mipsel_obsd.sh b/gnu/usr.bin/binutils/ld/emulparams/mipsel_obsd.sh new file mode 100644 index 00000000000..a6ca46dfa4e --- /dev/null +++ b/gnu/usr.bin/binutils/ld/emulparams/mipsel_obsd.sh @@ -0,0 +1,27 @@ +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 diff --git a/gnu/usr.bin/binutils/ld/emultempl/elfarc.em b/gnu/usr.bin/binutils/ld/emultempl/elfarc.em deleted file mode 100644 index 0b052eb033c..00000000000 --- a/gnu/usr.bin/binutils/ld/emultempl/elfarc.em +++ /dev/null @@ -1,1038 +0,0 @@ -# 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 < - ELF support by Ian Lance Taylor - -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_${EMULATION_NAME} - -#include "bfd.h" -#include "sysdep.h" - -#include -#include - -#include "bfdlink.h" - -#include "ld.h" -#include "ldmain.h" -#include "ldemul.h" -#include "ldfile.h" -#include "ldmisc.h" -#include "ldexp.h" -#include "ldlang.h" -#include "ldgram.h" - -static void gld${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${EMULATION_NAME}.c <= alloc) - { - alloc *= 2; - b = (char *) xrealloc (b, alloc); - } - if (c != ':' - && c != ' ' - && c != '\t' - && c != '\n' - && c != ',') - { - b[len] = c; - ++len; - } - else - { - if (len > 0 && b[len - 1] != ':') - { - b[len] = ':'; - ++len; - } - } - } - - if (len > 0 && b[len - 1] == ':') - --len; - - if (len > 0) - b[len] = '\0'; - else - { - free (b); - b = NULL; - } - - fclose (f); - - ld_so_conf = b; - } - - initialized = true; - } - - if (ld_so_conf == NULL) - return false; - - return gld${EMULATION_NAME}_search_needed (ld_so_conf, name); -} - -EOF - fi -fi -cat >>e${EMULATION_NAME}.c <next) - { - struct bfd_link_needed_list *ll; - const char *lib_path; - size_t len; - search_dirs_type *search; - - /* If we've already seen this file, skip it. */ - for (ll = needed; ll != l; ll = ll->next) - if (strcmp (ll->name, l->name) == 0) - break; - if (ll != l) - continue; - - /* See if this file was included in the link explicitly. */ - global_needed = l; - global_found = false; - lang_for_each_input_file (gld${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 <name)) - continue; -EOF - fi -fi -cat >>e${EMULATION_NAME}.c <name); - for (search = search_head; search != NULL; search = search->next) - { - char *filename; - - if (search->cmdline) - continue; - filename = (char *) xmalloc (strlen (search->name) + len + 2); - sprintf (filename, "%s/%s", search->name, l->name); - if (gld${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${EMULATION_NAME}.c <name)) - continue; -EOF - fi -fi -cat >>e${EMULATION_NAME}.c <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${EMULATION_NAME}.c <>e${EMULATION_NAME}.c <>e${EMULATION_NAME}.c <e${EMULATION_NAME}.c < + ELF support by Ian Lance Taylor + +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_${EMULATION_NAME} + +#include "bfd.h" +#include "sysdep.h" + +#include +#include + +#include "bfdlink.h" + +#include "ld.h" +#include "ldmain.h" +#include "ldemul.h" +#include "ldfile.h" +#include "ldmisc.h" +#include "ldexp.h" +#include "ldlang.h" +#include "ldgram.h" + +static void gld${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${EMULATION_NAME}.c <= alloc) + { + alloc *= 2; + b = (char *) xrealloc (b, alloc); + } + if (c != ':' + && c != ' ' + && c != '\t' + && c != '\n' + && c != ',') + { + b[len] = c; + ++len; + } + else + { + if (len > 0 && b[len - 1] != ':') + { + b[len] = ':'; + ++len; + } + } + } + + if (len > 0 && b[len - 1] == ':') + --len; + + if (len > 0) + b[len] = '\0'; + else + { + free (b); + b = NULL; + } + + fclose (f); + + ld_so_conf = b; + } + + initialized = true; + } + + if (ld_so_conf == NULL) + return false; + + return gld${EMULATION_NAME}_search_needed (ld_so_conf, name); +} + +EOF + fi +fi +cat >>e${EMULATION_NAME}.c <next) + { + struct bfd_link_needed_list *ll; + const char *lib_path; + size_t len; + search_dirs_type *search; + + /* If we've already seen this file, skip it. */ + for (ll = needed; ll != l; ll = ll->next) + if (strcmp (ll->name, l->name) == 0) + break; + if (ll != l) + continue; + + /* See if this file was included in the link explicitly. */ + global_needed = l; + global_found = false; + lang_for_each_input_file (gld${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 <name)) + continue; +EOF + fi +fi +cat >>e${EMULATION_NAME}.c <name); + for (search = search_head; search != NULL; search = search->next) + { + char *filename; + + if (search->cmdline) + continue; + filename = (char *) xmalloc (strlen (search->name) + len + 2); + sprintf (filename, "%s/%s", search->name, l->name); + if (gld${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${EMULATION_NAME}.c <name)) + continue; +EOF + fi +fi +cat >>e${EMULATION_NAME}.c <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${EMULATION_NAME}.c <>e${EMULATION_NAME}.c <>e${EMULATION_NAME}.c <