# This shell script emits a C file. -*- C -*-
# It does some substitutions.
cat >e${EMULATION_NAME}.c <<EOF
#define TARGET_IS_${EMULATION_NAME}
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "getopt.h"
#include "ld.h"
#include "ldmain.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldfile.h"
#include "ldemul.h"
static int support_old_code = 0;
static char * thumb_entry_symbol = NULL;
#define OPTION_SUPPORT_OLD_CODE 300
#define OPTION_THUMB_ENTRY 301
static void
gld${EMULATION_NAME}_add_options
(int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl,
struct option **longopts, int nrl ATTRIBUTE_UNUSED,
struct option **really_longopts ATTRIBUTE_UNUSED)
{
static const struct option xtra_long[] = {
{"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
{"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
{NULL, no_argument, NULL, 0}
};
*longopts = xrealloc (*longopts,
nl * sizeof (struct option) + sizeof (xtra_long));
memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
}
static void
gld${EMULATION_NAME}_list_options (FILE *file)
{
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 bfd_boolean
gld${EMULATION_NAME}_handle_option (int optc)
{
switch (optc)
{
default:
return FALSE;
case OPTION_SUPPORT_OLD_CODE:
support_old_code = 1;
break;
case OPTION_THUMB_ENTRY:
thumb_entry_symbol = optarg;
break;
}
return TRUE;
}
static void
gld${EMULATION_NAME}_before_parse (void)
{
#ifndef TARGET_
ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);
#endif
}
static void
gld${EMULATION_NAME}_before_allocation (void)
{
{
LANG_FOR_EACH_INPUT_STATEMENT (is)
{
if (! bfd_arm_process_before_allocation
(is->the_bfd, & link_info, support_old_code))
{
einfo (_("Errors encountered processing file %s"), is->filename);
}
}
}
bfd_arm_allocate_interworking_sections (& link_info);
}
static void
gld${EMULATION_NAME}_after_open (void)
{
if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
{
einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
return;
}
{
LANG_FOR_EACH_INPUT_STATEMENT (is)
{
if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
break;
}
}
}
static void
gld${EMULATION_NAME}_finish (void)
{
struct bfd_link_hash_entry * h;
if (thumb_entry_symbol == NULL)
return;
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;
val = (h->u.def.value
+ bfd_get_section_vma (output_bfd,
h->u.def.section->output_section)
+ h->u.def.section->output_offset);
val |= 1;
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: connot find thumb start symbol %s\n"), thumb_entry_symbol);
}
static char *
gld${EMULATION_NAME}_get_script (int *isfile)
EOF
if test -n "$COMPILE_IN"
then
# Scripts compiled in.
# sed commands to quote an ld script as a C string.
sc="-f stringify.sed"
cat >>e${EMULATION_NAME}.c <<EOF
{
*isfile = 0;
if (link_info.relocatable && config.build_constructors)
return
EOF
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${EMULATION_NAME}.c <<EOF
{
*isfile = 1;
if (link_info.relocatable && config.build_constructors)
return "ldscripts/${EMULATION_NAME}.xu";
else if (link_info.relocatable)
return "ldscripts/${EMULATION_NAME}.xr";
else if (!config.text_read_only)
return "ldscripts/${EMULATION_NAME}.xbn";
else if (!config.magic_demand_paged)
return "ldscripts/${EMULATION_NAME}.xn";
else
return "ldscripts/${EMULATION_NAME}.x";
}
EOF
fi
cat >>e${EMULATION_NAME}.c <<EOF
struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
{
gld${EMULATION_NAME}_before_parse,
syslib_default,
hll_default,
after_parse_default,
gld${EMULATION_NAME}_after_open,
after_allocation_default,
set_output_arch_default,
ldemul_default_target,
gld${EMULATION_NAME}_before_allocation,
gld${EMULATION_NAME}_get_script,
"${EMULATION_NAME}",
"${OUTPUT_FORMAT}",
gld${EMULATION_NAME}_finish,
NULL,
NULL,
NULL,
NULL,
NULL,
gld${EMULATION_NAME}_add_options,
gld${EMULATION_NAME}_handle_option,
NULL,
gld${EMULATION_NAME}_list_options,
NULL,
NULL,
NULL
};
EOF