# This shell script emits a C file. -*- C -*-
# It does some substitutions.
-cat >e${EMULATION_NAME}.c <<EOF
+fragment <<EOF
/* This file is is generated by a shell script. DO NOT EDIT! */
/* emulate the original gld for the given ${EMULATION_NAME}
- Copyright (C) 1991, 93, 96, 97, 1998 Free Software Foundation, Inc.
+ Copyright 1991, 1993, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+ 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
-This file is part of GLD, the Gnu Linker.
+ This file is part of the GNU Binutils.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#define TARGET_IS_${EMULATION_NAME}
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "bfdlink.h"
#include "getopt.h"
#include "ld.h"
#include "ldmain.h"
-#include "ldemul.h"
-#include "ldfile.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldlang.h"
+#include "ldfile.h"
+#include "ldemul.h"
-static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
-static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
-static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));
-static int gld${EMULATION_NAME}_parse_args PARAMS((int, char **));
-static void gld${EMULATION_NAME}_list_options PARAMS ((FILE *));
-
-/* If true, then interworking stubs which support calls to old, non-interworking
- aware ARM code should be generated. */
+/* If TRUE, then interworking stubs which support calls to old,
+ non-interworking aware ARM code should be generated. */
static int support_old_code = 0;
+static char * thumb_entry_symbol = NULL;
#define OPTION_SUPPORT_OLD_CODE 300
+#define OPTION_THUMB_ENTRY 301
-static struct option longopts[] =
+static void
+gld${EMULATION_NAME}_add_options
+ (int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl,
+ struct option **longopts, int nrl ATTRIBUTE_UNUSED,
+ struct option **really_longopts ATTRIBUTE_UNUSED)
{
- {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
- {NULL, no_argument, NULL, 0}
-};
+ static const struct option xtra_long[] = {
+ {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
+ {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
+ {NULL, no_argument, NULL, 0}
+ };
+
+ *longopts = xrealloc (*longopts,
+ nl * sizeof (struct option) + sizeof (xtra_long));
+ memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
+}
static void
-gld${EMULATION_NAME}_list_options (file)
- FILE * file;
+gld${EMULATION_NAME}_list_options (FILE *file)
{
- fprintf (file, _(" --support-old-code Support interworking with old code\n"));
+ fprintf (file, _(" --support-old-code Support interworking with old code\n"));
+ fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n"));
}
-static int
-gld${EMULATION_NAME}_parse_args (argc, argv)
- int argc;
- char ** argv;
+static bfd_boolean
+gld${EMULATION_NAME}_handle_option (int optc)
{
- int longind;
- int optc;
- int prevoptind = optind;
- int prevopterr = opterr;
- int wanterror;
- static int lastoptind = -1;
-
- if (lastoptind != optind)
- opterr = 0;
-
- wanterror = opterr;
- lastoptind = optind;
-
- optc = getopt_long_only (argc, argv, "-", longopts, & longind);
- opterr = prevopterr;
-
switch (optc)
{
default:
- if (wanterror)
- xexit (1);
- optind = prevoptind;
- return 0;
+ return FALSE;
case OPTION_SUPPORT_OLD_CODE:
support_old_code = 1;
break;
+
+ case OPTION_THUMB_ENTRY:
+ thumb_entry_symbol = optarg;
+ break;
}
-
- return 1;
+
+ return TRUE;
}
\f
static void
-gld${EMULATION_NAME}_before_parse ()
+gld${EMULATION_NAME}_before_parse (void)
{
#ifndef TARGET_ /* I.e., if not generic. */
- ldfile_set_output_arch ("`echo ${ARCH}`");
+ ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);
#endif /* not TARGET_ */
}
sections, but before any sizes or addresses have been set. */
static void
-gld${EMULATION_NAME}_before_allocation ()
+gld${EMULATION_NAME}_before_allocation (void)
{
/* we should be able to set the size of the interworking stub section */
/* We have seen it all. Allocate it, and carry on */
bfd_arm_allocate_interworking_sections (& link_info);
+
+ before_allocation_default ();
}
static void
-gld${EMULATION_NAME}_after_open ()
+gld${EMULATION_NAME}_after_open (void)
{
- LANG_FOR_EACH_INPUT_STATEMENT (is)
+ if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
{
- if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
- break;
+ /* The arm backend needs special fields in the output hash structure.
+ These will only be created if the output format is an arm format,
+ hence we do not support linking and changing output formats at the
+ same time. Use a link followed by objcopy to change output formats. */
+ einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
+ return;
}
+
+ {
+ LANG_FOR_EACH_INPUT_STATEMENT (is)
+ {
+ if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
+ break;
+ }
+ }
+}
+
+static void
+gld${EMULATION_NAME}_finish (void)
+{
+ if (thumb_entry_symbol != NULL)
+ {
+ struct bfd_link_hash_entry * h;
+
+ h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
+ FALSE, FALSE, TRUE);
+
+ if (h != (struct bfd_link_hash_entry *) NULL
+ && (h->type == bfd_link_hash_defined
+ || h->type == bfd_link_hash_defweak)
+ && h->u.def.section->output_section != NULL)
+ {
+ static char buffer[32];
+ bfd_vma val;
+
+ /* Special procesing is required for a Thumb entry symbol. The
+ bottom bit of its address must be set. */
+ val = (h->u.def.value
+ + bfd_get_section_vma (link_info.output_bfd,
+ h->u.def.section->output_section)
+ + h->u.def.section->output_offset);
+
+ val |= 1;
+
+ /* Now convert this value into a string and store it in entry_symbol
+ where the lang_finish() function will pick it up. */
+ buffer[0] = '0';
+ buffer[1] = 'x';
+
+ sprintf_vma (buffer + 2, val);
+
+ if (entry_symbol.name != NULL && entry_from_cmdline)
+ einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
+ thumb_entry_symbol, entry_symbol.name);
+ entry_symbol.name = buffer;
+ }
+ else
+ einfo (_("%P: warning: cannot find thumb start symbol %s\n"),
+ thumb_entry_symbol);
+ }
+
+ finish_default ();
}
static char *
-gld${EMULATION_NAME}_get_script (isfile)
- int *isfile;
+gld${EMULATION_NAME}_get_script (int *isfile)
EOF
if test -n "$COMPILE_IN"
# Scripts compiled in.
# sed commands to quote an ld script as a C string.
-sc="-f ${srcdir}/emultempl/stringify.sed"
+sc="-f stringify.sed"
-cat >>e${EMULATION_NAME}.c <<EOF
-{
+fragment <<EOF
+{
*isfile = 0;
- if (link_info.relocateable == true && config.build_constructors == true)
+ if (link_info.relocatable && config.build_constructors)
return
EOF
-sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
-echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
-sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
-echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
-sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
-echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
-sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
-echo ' ; else return' >> e${EMULATION_NAME}.c
-sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
-echo '; }' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
+echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
+echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
+echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
+echo ' ; else return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
+echo '; }' >> e${EMULATION_NAME}.c
else
# Scripts read from the filesystem.
-cat >>e${EMULATION_NAME}.c <<EOF
-{
+fragment <<EOF
+{
*isfile = 1;
- if (link_info.relocateable == true && config.build_constructors == true)
+ if (link_info.relocatable && config.build_constructors)
return "ldscripts/${EMULATION_NAME}.xu";
- else if (link_info.relocateable == true)
+ else if (link_info.relocatable)
return "ldscripts/${EMULATION_NAME}.xr";
else if (!config.text_read_only)
return "ldscripts/${EMULATION_NAME}.xbn";
fi
-cat >>e${EMULATION_NAME}.c <<EOF
+fragment <<EOF
-struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
+struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
{
gld${EMULATION_NAME}_before_parse,
syslib_default,
gld${EMULATION_NAME}_get_script,
"${EMULATION_NAME}",
"${OUTPUT_FORMAT}",
- NULL, /* finish */
- NULL, /* create output section statements */
- NULL, /* open dynamic archive */
- NULL, /* place orphan */
- NULL, /* set_symbols */
- gld${EMULATION_NAME}_parse_args,
- NULL, /* unrecognised file */
- gld${EMULATION_NAME}_list_options
+ gld${EMULATION_NAME}_finish,
+ NULL, /* create output section statements */
+ NULL, /* open dynamic archive */
+ NULL, /* place orphan */
+ NULL, /* set symbols */
+ NULL, /* parse_args */
+ gld${EMULATION_NAME}_add_options,
+ gld${EMULATION_NAME}_handle_option,
+ NULL, /* unrecognised file */
+ gld${EMULATION_NAME}_list_options,
+ NULL, /* recognized file */
+ NULL, /* find_potential_libraries */
+ NULL /* new_vers_pattern */
};
EOF
projects / binutils.git / blobdiff