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binutils-gdb/ld/mpw-elfmips.c

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* mpw-make.sed: Add symbolic doublequoting to ldmain compile edit. * mpw-config.in: Add mips-*-* case as mips-elf, and use more wildcards in matching. * mpw-emipself.c: New file, pregenerated mips elf emulation.
1996-09-27 05:09:23 +08:00
/* This file is is generated by a shell script. DO NOT EDIT! */
/* 32 bit ELF emulation code for elf32ebmip
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_elf32ebmip
#include "bfd.h"
#include "sysdep.h"
#include <ctype.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 gldelf32ebmip_before_parse PARAMS ((void));
static boolean gldelf32ebmip_open_dynamic_archive
PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
static void gldelf32ebmip_after_open PARAMS ((void));
static void gldelf32ebmip_check_needed
PARAMS ((lang_input_statement_type *));
static void gldelf32ebmip_stat_needed
PARAMS ((lang_input_statement_type *));
static boolean gldelf32ebmip_search_needed
PARAMS ((const char *, const char *));
static boolean gldelf32ebmip_try_needed PARAMS ((const char *));
static void gldelf32ebmip_before_allocation PARAMS ((void));
static void gldelf32ebmip_find_statement_assignment
PARAMS ((lang_statement_union_type *));
static void gldelf32ebmip_find_exp_assignment PARAMS ((etree_type *));
static boolean gldelf32ebmip_place_orphan
PARAMS ((lang_input_statement_type *, asection *));
static void gldelf32ebmip_place_section
PARAMS ((lang_statement_union_type *));
static char *gldelf32ebmip_get_script PARAMS ((int *isfile));
static void
gldelf32ebmip_before_parse()
{
ldfile_output_architecture = bfd_arch_mips;
config.dynamic_link = true;
}
/* Try to open a dynamic archive. This is where we know that ELF
dynamic libraries have an extension of .so. */
static boolean
gldelf32ebmip_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);
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;
}
/* 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
gldelf32ebmip_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 (gldelf32ebmip_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 (gldelf32ebmip_search_needed (command_line.rpath_link,
l->name))
continue;
if (gldelf32ebmip_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 (gldelf32ebmip_search_needed (lib_path, l->name))
continue;
}
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 (gldelf32ebmip_try_needed (filename))
break;
free (filename);
}
if (search != NULL)
continue;
einfo ("%P: warning: %s, needed by %B, not found\n",
l->name, l->by);
}
}
/* Search for a needed file in a path. */
static boolean
gldelf32ebmip_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 (gldelf32ebmip_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
gldelf32ebmip_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 (gldelf32ebmip_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
gldelf32ebmip_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
gldelf32ebmip_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
gldelf32ebmip_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 (gldelf32ebmip_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_elf32_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)
/* 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
gldelf32ebmip_find_statement_assignment (s)
lang_statement_union_type *s;
{
if (s->header.type == lang_assignment_statement_enum)
gldelf32ebmip_find_exp_assignment (s->assignment_statement.exp);
}
/* Look through an expression for an assignment statement. */
static void
gldelf32ebmip_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_elf32_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);
}
gldelf32ebmip_find_exp_assignment (exp->assign.src);
break;
case etree_binary:
gldelf32ebmip_find_exp_assignment (exp->binary.lhs);
gldelf32ebmip_find_exp_assignment (exp->binary.rhs);
break;
case etree_trinary:
gldelf32ebmip_find_exp_assignment (exp->trinary.cond);
gldelf32ebmip_find_exp_assignment (exp->trinary.lhs);
gldelf32ebmip_find_exp_assignment (exp->trinary.rhs);
break;
case etree_unary:
gldelf32ebmip_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
gldelf32ebmip_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 (gldelf32ebmip_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*");
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
gldelf32ebmip_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 *
gldelf32ebmip_get_script(isfile)
int *isfile;
{
*isfile = 0;
if (link_info.relocateable == true && config.build_constructors == true)
return "OUTPUT_FORMAT(\"elf32-bigmips\", \"elf32-bigmips\",\n\
\"elf32-littlemips\")\n\
OUTPUT_ARCH(mips)\n\
ENTRY(_start)\n\
/* For some reason, the Solaris linker makes bad executables\n\
if gld -r is used and the intermediate file has sections starting\n\
at non-zero addresses. Could be a Solaris ld bug, could be a GNU ld\n\
bug. But for now assigning the zero vmas works. */\n\
SECTIONS\n\
{\n\
/* Read-only sections, merged into text segment: */\n\
.interp 0 : { *(.interp) }\n\
.reginfo 0 : { *(.reginfo) }\n\
.dynamic 0 : { *(.dynamic) }\n\
.dynstr 0 : { *(.dynstr) }\n\
.dynsym 0 : { *(.dynsym) }\n\
.hash 0 : { *(.hash) }\n\
.rel.text 0 : { *(.rel.text) }\n\
.rela.text 0 : { *(.rela.text) }\n\
.rel.data 0 : { *(.rel.data) }\n\
.rela.data 0 : { *(.rela.data) }\n\
.rel.rodata 0 : { *(.rel.rodata) }\n\
.rela.rodata 0 : { *(.rela.rodata) }\n\
.rel.got 0 : { *(.rel.got) }\n\
.rela.got 0 : { *(.rela.got) }\n\
.rel.ctors 0 : { *(.rel.ctors) }\n\
.rela.ctors 0 : { *(.rela.ctors) }\n\
.rel.dtors 0 : { *(.rel.dtors) }\n\
.rela.dtors 0 : { *(.rela.dtors) }\n\
.rel.init 0 : { *(.rel.init) }\n\
.rela.init 0 : { *(.rela.init) }\n\
.rel.fini 0 : { *(.rel.fini) }\n\
.rela.fini 0 : { *(.rela.fini) }\n\
.rel.bss 0 : { *(.rel.bss) }\n\
.rela.bss 0 : { *(.rela.bss) }\n\
.rel.plt 0 : { *(.rel.plt) }\n\
.rela.plt 0 : { *(.rela.plt) }\n\
.rodata 0 : { *(.rodata) }\n\
.rodata1 0 : { *(.rodata1) }\n\
.init 0 : { *(.init) } =0\n\
.text 0 :\n\
{\n\
*(.text)\n\
*(.stub)\n\
/* .gnu.warning sections are handled specially by elf32.em. */\n\
*(.gnu.warning)\n\
} =0\n\
.fini 0 : { *(.fini) } =0\n\
/* Adjust the address for the data segment. We want to adjust up to\n\
the same address within the page on the next page up. It would\n\
be more correct to do this:\n\
The current expression does not correctly handle the case of a\n\
text segment ending precisely at the end of a page; it causes the\n\
data segment to skip a page. The above expression does not have\n\
this problem, but it will currently (2/95) cause BFD to allocate\n\
a single segment, combining both text and data, for this case.\n\
This will prevent the text segment from being shared among\n\
multiple executions of the program; I think that is more\n\
important than losing a page of the virtual address space (note\n\
that no actual memory is lost; the page which is skipped can not\n\
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.data 0 :\n\
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CONSTRUCTORS\n\
}\n\
.data1 0 : { *(.data1) }\n\
.ctors 0 : { *(.ctors) }\n\
.dtors 0 : { *(.dtors) }\n\
.got 0 :\n\
{\n\
*(.got.plt) *(.got)\n\
}\n\
/* We want the small data sections together, so single-instruction offsets\n\
can access them all, and initialized data all before uninitialized, so\n\
we can shorten the on-disk segment size. */\n\
.sdata 0 : { *(.sdata) }\n\
.sbss 0 : { *(.sbss) *(.scommon) }\n\
.bss 0 :\n\
{\n\
*(.dynbss)\n\
*(.bss)\n\
*(COMMON)\n\
}\n\
/* These are needed for ELF backends which have not yet been\n\
converted to the new style linker. */\n\
.stab 0 : { *(.stab) }\n\
.stabstr 0 : { *(.stabstr) }\n\
/* DWARF debug sections.\n\
Symbols in the .debug DWARF section are relative to the beginning of the\n\
section so we begin .debug at 0. It's not clear yet what needs to happen\n\
for the others. */\n\
.debug 0 : { *(.debug) }\n\
.debug_srcinfo 0 : { *(.debug_srcinfo) }\n\
.debug_aranges 0 : { *(.debug_aranges) }\n\
.debug_pubnames 0 : { *(.debug_pubnames) }\n\
.debug_sfnames 0 : { *(.debug_sfnames) }\n\
.line 0 : { *(.line) }\n\
/* These must appear regardless of . */\n\
.gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }\n\
.gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }\n\
}\n\n";
else if (link_info.relocateable == true)
return "OUTPUT_FORMAT(\"elf32-bigmips\", \"elf32-bigmips\",\n\
\"elf32-littlemips\")\n\
OUTPUT_ARCH(mips)\n\
ENTRY(_start)\n\
/* For some reason, the Solaris linker makes bad executables\n\
if gld -r is used and the intermediate file has sections starting\n\
at non-zero addresses. Could be a Solaris ld bug, could be a GNU ld\n\
bug. But for now assigning the zero vmas works. */\n\
SECTIONS\n\
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/* Read-only sections, merged into text segment: */\n\
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.reginfo 0 : { *(.reginfo) }\n\
.dynamic 0 : { *(.dynamic) }\n\
.dynstr 0 : { *(.dynstr) }\n\
.dynsym 0 : { *(.dynsym) }\n\
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.rodata 0 : { *(.rodata) }\n\
.rodata1 0 : { *(.rodata1) }\n\
.init 0 : { *(.init) } =0\n\
.text 0 :\n\
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/* Adjust the address for the data segment. We want to adjust up to\n\
the same address within the page on the next page up. It would\n\
be more correct to do this:\n\
The current expression does not correctly handle the case of a\n\
text segment ending precisely at the end of a page; it causes the\n\
data segment to skip a page. The above expression does not have\n\
this problem, but it will currently (2/95) cause BFD to allocate\n\
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This will prevent the text segment from being shared among\n\
multiple executions of the program; I think that is more\n\
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/* We want the small data sections together, so single-instruction offsets\n\
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.sdata 0 : { *(.sdata) }\n\
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.bss 0 :\n\
{\n\
*(.dynbss)\n\
*(.bss)\n\
*(COMMON)\n\
}\n\
/* These are needed for ELF backends which have not yet been\n\
converted to the new style linker. */\n\
.stab 0 : { *(.stab) }\n\
.stabstr 0 : { *(.stabstr) }\n\
/* DWARF debug sections.\n\
Symbols in the .debug DWARF section are relative to the beginning of the\n\
section so we begin .debug at 0. It's not clear yet what needs to happen\n\
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.debug 0 : { *(.debug) }\n\
.debug_srcinfo 0 : { *(.debug_srcinfo) }\n\
.debug_aranges 0 : { *(.debug_aranges) }\n\
.debug_pubnames 0 : { *(.debug_pubnames) }\n\
.debug_sfnames 0 : { *(.debug_sfnames) }\n\
.line 0 : { *(.line) }\n\
/* These must appear regardless of . */\n\
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.gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }\n\
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else if (!config.text_read_only)
return "OUTPUT_FORMAT(\"elf32-bigmips\", \"elf32-bigmips\",\n\
\"elf32-littlemips\")\n\
OUTPUT_ARCH(mips)\n\
ENTRY(_start)\n\
SEARCH_DIR(/usr/local/mips-elf/lib);\n\
/* Do we need any of these for elf?\n\
__DYNAMIC = 0; */\n\
SECTIONS\n\
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/* Read-only sections, merged into text segment: */\n\
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.reginfo : { *(.reginfo) }\n\
.dynamic : { *(.dynamic) }\n\
.dynstr : { *(.dynstr) }\n\
.dynsym : { *(.dynsym) }\n\
.hash : { *(.hash) }\n\
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.rela.rodata : { *(.rela.rodata) }\n\
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.rela.bss : { *(.rela.bss) }\n\
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.rodata : { *(.rodata) }\n\
.rodata1 : { *(.rodata1) }\n\
.init : { *(.init) } =0\n\
.text :\n\
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_ftext = . ;\n\
*(.text)\n\
*(.stub)\n\
/* .gnu.warning sections are handled specially by elf32.em. */\n\
*(.gnu.warning)\n\
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_etext = .;\n\
PROVIDE (etext = .);\n\
.fini : { *(.fini) } =0\n\
/* Adjust the address for the data segment. We want to adjust up to\n\
the same address within the page on the next page up. It would\n\
be more correct to do this:\n\
. = .;\n\
The current expression does not correctly handle the case of a\n\
text segment ending precisely at the end of a page; it causes the\n\
data segment to skip a page. The above expression does not have\n\
this problem, but it will currently (2/95) cause BFD to allocate\n\
a single segment, combining both text and data, for this case.\n\
This will prevent the text segment from being shared among\n\
multiple executions of the program; I think that is more\n\
important than losing a page of the virtual address space (note\n\
that no actual memory is lost; the page which is skipped can not\n\
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. += . - 0x0400000;\n\
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_fdata = . ;\n\
*(.data)\n\
CONSTRUCTORS\n\
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.data1 : { *(.data1) }\n\
.ctors : { *(.ctors) }\n\
.dtors : { *(.dtors) }\n\
_gp = ALIGN(16) + 0x7ff0;\n\
.got :\n\
{\n\
*(.got.plt) *(.got)\n\
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/* We want the small data sections together, so single-instruction offsets\n\
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.sdata : { *(.sdata) }\n\
.lit8 : { *(.lit8) }\n\
.lit4 : { *(.lit4) }\n\
_edata = .;\n\
PROVIDE (edata = .);\n\
__bss_start = .;\n\
_fbss = .;\n\
.sbss : { *(.sbss) *(.scommon) }\n\
.bss :\n\
{\n\
*(.dynbss)\n\
*(.bss)\n\
*(COMMON)\n\
}\n\
_end = . ;\n\
PROVIDE (end = .);\n\
/* These are needed for ELF backends which have not yet been\n\
converted to the new style linker. */\n\
.stab 0 : { *(.stab) }\n\
.stabstr 0 : { *(.stabstr) }\n\
/* DWARF debug sections.\n\
Symbols in the .debug DWARF section are relative to the beginning of the\n\
section so we begin .debug at 0. It's not clear yet what needs to happen\n\
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.debug 0 : { *(.debug) }\n\
.debug_srcinfo 0 : { *(.debug_srcinfo) }\n\
.debug_aranges 0 : { *(.debug_aranges) }\n\
.debug_pubnames 0 : { *(.debug_pubnames) }\n\
.debug_sfnames 0 : { *(.debug_sfnames) }\n\
.line 0 : { *(.line) }\n\
/* These must appear regardless of . */\n\
.gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }\n\
.gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }\n\
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else if (!config.magic_demand_paged)
return "OUTPUT_FORMAT(\"elf32-bigmips\", \"elf32-bigmips\",\n\
\"elf32-littlemips\")\n\
OUTPUT_ARCH(mips)\n\
ENTRY(_start)\n\
SEARCH_DIR(/usr/local/mips-elf/lib);\n\
/* Do we need any of these for elf?\n\
__DYNAMIC = 0; */\n\
SECTIONS\n\
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/* Read-only sections, merged into text segment: */\n\
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.reginfo : { *(.reginfo) }\n\
.dynamic : { *(.dynamic) }\n\
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.dynsym : { *(.dynsym) }\n\
.hash : { *(.hash) }\n\
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.rodata : { *(.rodata) }\n\
.rodata1 : { *(.rodata1) }\n\
.init : { *(.init) } =0\n\
.text :\n\
{\n\
_ftext = . ;\n\
*(.text)\n\
*(.stub)\n\
/* .gnu.warning sections are handled specially by elf32.em. */\n\
*(.gnu.warning)\n\
} =0\n\
_etext = .;\n\
PROVIDE (etext = .);\n\
.fini : { *(.fini) } =0\n\
/* Adjust the address for the data segment. We want to adjust up to\n\
the same address within the page on the next page up. It would\n\
be more correct to do this:\n\
. = 0x10000000;\n\
The current expression does not correctly handle the case of a\n\
text segment ending precisely at the end of a page; it causes the\n\
data segment to skip a page. The above expression does not have\n\
this problem, but it will currently (2/95) cause BFD to allocate\n\
a single segment, combining both text and data, for this case.\n\
This will prevent the text segment from being shared among\n\
multiple executions of the program; I think that is more\n\
important than losing a page of the virtual address space (note\n\
that no actual memory is lost; the page which is skipped can not\n\
be referenced). */\n\
. += 0x10000000 - 0x0400000;\n\
.data :\n\
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_fdata = . ;\n\
*(.data)\n\
CONSTRUCTORS\n\
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.data1 : { *(.data1) }\n\
.ctors : { *(.ctors) }\n\
.dtors : { *(.dtors) }\n\
_gp = ALIGN(16) + 0x7ff0;\n\
.got :\n\
{\n\
*(.got.plt) *(.got)\n\
}\n\
/* We want the small data sections together, so single-instruction offsets\n\
can access them all, and initialized data all before uninitialized, so\n\
we can shorten the on-disk segment size. */\n\
.sdata : { *(.sdata) }\n\
.lit8 : { *(.lit8) }\n\
.lit4 : { *(.lit4) }\n\
_edata = .;\n\
PROVIDE (edata = .);\n\
__bss_start = .;\n\
_fbss = .;\n\
.sbss : { *(.sbss) *(.scommon) }\n\
.bss :\n\
{\n\
*(.dynbss)\n\
*(.bss)\n\
*(COMMON)\n\
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_end = . ;\n\
PROVIDE (end = .);\n\
/* These are needed for ELF backends which have not yet been\n\
converted to the new style linker. */\n\
.stab 0 : { *(.stab) }\n\
.stabstr 0 : { *(.stabstr) }\n\
/* DWARF debug sections.\n\
Symbols in the .debug DWARF section are relative to the beginning of the\n\
section so we begin .debug at 0. It's not clear yet what needs to happen\n\
for the others. */\n\
.debug 0 : { *(.debug) }\n\
.debug_srcinfo 0 : { *(.debug_srcinfo) }\n\
.debug_aranges 0 : { *(.debug_aranges) }\n\
.debug_pubnames 0 : { *(.debug_pubnames) }\n\
.debug_sfnames 0 : { *(.debug_sfnames) }\n\
.line 0 : { *(.line) }\n\
/* These must appear regardless of . */\n\
.gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }\n\
.gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }\n\
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else if (link_info.shared)
return "OUTPUT_FORMAT(\"elf32-bigmips\", \"elf32-bigmips\",\n\
\"elf32-littlemips\")\n\
OUTPUT_ARCH(mips)\n\
ENTRY(_start)\n\
SEARCH_DIR(/usr/local/mips-elf/lib);\n\
/* Do we need any of these for elf?\n\
__DYNAMIC = 0; */\n\
SECTIONS\n\
{\n\
/* Read-only sections, merged into text segment: */\n\
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.reginfo : { *(.reginfo) }\n\
.dynamic : { *(.dynamic) }\n\
.dynstr : { *(.dynstr) }\n\
.dynsym : { *(.dynsym) }\n\
.hash : { *(.hash) }\n\
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.rodata : { *(.rodata) }\n\
.rodata1 : { *(.rodata1) }\n\
.init : { *(.init) } =0\n\
.text :\n\
{\n\
*(.text)\n\
*(.stub)\n\
/* .gnu.warning sections are handled specially by elf32.em. */\n\
*(.gnu.warning)\n\
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.fini : { *(.fini) } =0\n\
/* Adjust the address for the data segment. We want to adjust up to\n\
the same address within the page on the next page up. It would\n\
be more correct to do this:\n\
. = 0x10000000;\n\
The current expression does not correctly handle the case of a\n\
text segment ending precisely at the end of a page; it causes the\n\
data segment to skip a page. The above expression does not have\n\
this problem, but it will currently (2/95) cause BFD to allocate\n\
a single segment, combining both text and data, for this case.\n\
This will prevent the text segment from being shared among\n\
multiple executions of the program; I think that is more\n\
important than losing a page of the virtual address space (note\n\
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. += 0x10000;\n\
.data :\n\
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.data1 : { *(.data1) }\n\
.ctors : { *(.ctors) }\n\
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_gp = ALIGN(16) + 0x7ff0;\n\
.got :\n\
{\n\
*(.got.plt) *(.got)\n\
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/* We want the small data sections together, so single-instruction offsets\n\
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.sdata : { *(.sdata) }\n\
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.lit4 : { *(.lit4) }\n\
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.bss :\n\
{\n\
*(.dynbss)\n\
*(.bss)\n\
*(COMMON)\n\
}\n\
/* These are needed for ELF backends which have not yet been\n\
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.stab 0 : { *(.stab) }\n\
.stabstr 0 : { *(.stabstr) }\n\
/* DWARF debug sections.\n\
Symbols in the .debug DWARF section are relative to the beginning of the\n\
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.debug 0 : { *(.debug) }\n\
.debug_srcinfo 0 : { *(.debug_srcinfo) }\n\
.debug_aranges 0 : { *(.debug_aranges) }\n\
.debug_pubnames 0 : { *(.debug_pubnames) }\n\
.debug_sfnames 0 : { *(.debug_sfnames) }\n\
.line 0 : { *(.line) }\n\
/* These must appear regardless of . */\n\
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.gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }\n\
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else
return "OUTPUT_FORMAT(\"elf32-bigmips\", \"elf32-bigmips\",\n\
\"elf32-littlemips\")\n\
OUTPUT_ARCH(mips)\n\
ENTRY(_start)\n\
SEARCH_DIR(/usr/local/mips-elf/lib);\n\
/* Do we need any of these for elf?\n\
__DYNAMIC = 0; */\n\
SECTIONS\n\
{\n\
/* Read-only sections, merged into text segment: */\n\
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.interp : { *(.interp) }\n\
.reginfo : { *(.reginfo) }\n\
.dynamic : { *(.dynamic) }\n\
.dynstr : { *(.dynstr) }\n\
.dynsym : { *(.dynsym) }\n\
.hash : { *(.hash) }\n\
.rel.text : { *(.rel.text) }\n\
.rela.text : { *(.rela.text) }\n\
.rel.data : { *(.rel.data) }\n\
.rela.data : { *(.rela.data) }\n\
.rel.rodata : { *(.rel.rodata) }\n\
.rela.rodata : { *(.rela.rodata) }\n\
.rel.got : { *(.rel.got) }\n\
.rela.got : { *(.rela.got) }\n\
.rel.ctors : { *(.rel.ctors) }\n\
.rela.ctors : { *(.rela.ctors) }\n\
.rel.dtors : { *(.rel.dtors) }\n\
.rela.dtors : { *(.rela.dtors) }\n\
.rel.init : { *(.rel.init) }\n\
.rela.init : { *(.rela.init) }\n\
.rel.fini : { *(.rel.fini) }\n\
.rela.fini : { *(.rela.fini) }\n\
.rel.bss : { *(.rel.bss) }\n\
.rela.bss : { *(.rela.bss) }\n\
.rel.plt : { *(.rel.plt) }\n\
.rela.plt : { *(.rela.plt) }\n\
.rodata : { *(.rodata) }\n\
.rodata1 : { *(.rodata1) }\n\
.init : { *(.init) } =0\n\
.text :\n\
{\n\
_ftext = . ;\n\
*(.text)\n\
*(.stub)\n\
/* .gnu.warning sections are handled specially by elf32.em. */\n\
*(.gnu.warning)\n\
} =0\n\
_etext = .;\n\
PROVIDE (etext = .);\n\
.fini : { *(.fini) } =0\n\
/* Adjust the address for the data segment. We want to adjust up to\n\
the same address within the page on the next page up. It would\n\
be more correct to do this:\n\
. = 0x10000000;\n\
The current expression does not correctly handle the case of a\n\
text segment ending precisely at the end of a page; it causes the\n\
data segment to skip a page. The above expression does not have\n\
this problem, but it will currently (2/95) cause BFD to allocate\n\
a single segment, combining both text and data, for this case.\n\
This will prevent the text segment from being shared among\n\
multiple executions of the program; I think that is more\n\
important than losing a page of the virtual address space (note\n\
that no actual memory is lost; the page which is skipped can not\n\
be referenced). */\n\
. += 0x10000000 - 0x0400000;\n\
.data :\n\
{\n\
_fdata = . ;\n\
*(.data)\n\
CONSTRUCTORS\n\
}\n\
.data1 : { *(.data1) }\n\
.ctors : { *(.ctors) }\n\
.dtors : { *(.dtors) }\n\
_gp = ALIGN(16) + 0x7ff0;\n\
.got :\n\
{\n\
*(.got.plt) *(.got)\n\
}\n\
/* We want the small data sections together, so single-instruction offsets\n\
can access them all, and initialized data all before uninitialized, so\n\
we can shorten the on-disk segment size. */\n\
.sdata : { *(.sdata) }\n\
.lit8 : { *(.lit8) }\n\
.lit4 : { *(.lit4) }\n\
_edata = .;\n\
PROVIDE (edata = .);\n\
__bss_start = .;\n\
_fbss = .;\n\
.sbss : { *(.sbss) *(.scommon) }\n\
.bss :\n\
{\n\
*(.dynbss)\n\
*(.bss)\n\
*(COMMON)\n\
}\n\
_end = . ;\n\
PROVIDE (end = .);\n\
/* These are needed for ELF backends which have not yet been\n\
converted to the new style linker. */\n\
.stab 0 : { *(.stab) }\n\
.stabstr 0 : { *(.stabstr) }\n\
/* DWARF debug sections.\n\
Symbols in the .debug DWARF section are relative to the beginning of the\n\
section so we begin .debug at 0. It's not clear yet what needs to happen\n\
for the others. */\n\
.debug 0 : { *(.debug) }\n\
.debug_srcinfo 0 : { *(.debug_srcinfo) }\n\
.debug_aranges 0 : { *(.debug_aranges) }\n\
.debug_pubnames 0 : { *(.debug_pubnames) }\n\
.debug_sfnames 0 : { *(.debug_sfnames) }\n\
.line 0 : { *(.line) }\n\
/* These must appear regardless of . */\n\
.gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }\n\
.gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }\n\
}\n\n";
}
struct ld_emulation_xfer_struct ld_elf32ebmip_emulation =
{
gldelf32ebmip_before_parse,
syslib_default,
hll_default,
after_parse_default,
gldelf32ebmip_after_open,
after_allocation_default,
set_output_arch_default,
ldemul_default_target,
gldelf32ebmip_before_allocation,
gldelf32ebmip_get_script,
"elf32ebmip",
"elf32-bigmips",
NULL,
NULL,
gldelf32ebmip_open_dynamic_archive,
gldelf32ebmip_place_orphan
};
Reference in New Issue Copy Permalink