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- # This shell script emits a C file. -*- C -*-
- # Copyright (C) 2006-2022 Free Software Foundation, Inc.
- #
- # 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 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.
- #
- # 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.
- fragment <<EOF
- /* --- \begin{pdp11.em} */
- #include "getopt.h"
- static void
- gld${EMULATION_NAME}_before_parse (void)
- {
- ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);
- /* for PDP11 Unix compatibility, default to --omagic */
- config.magic_demand_paged = false;
- config.text_read_only = false;
- }
- /* PDP11 specific options. */
- #define OPTION_IMAGIC 301
- static void
- gld${EMULATION_NAME}_add_options
- (int ns ATTRIBUTE_UNUSED,
- char **shortopts,
- int nl,
- struct option **longopts,
- int nrl ATTRIBUTE_UNUSED,
- struct option **really_longopts ATTRIBUTE_UNUSED)
- {
- static const char xtra_short[] = "z";
- static const struct option xtra_long[] =
- {
- {"imagic", no_argument, NULL, OPTION_IMAGIC},
- {NULL, no_argument, NULL, 0}
- };
- *shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short));
- memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short));
- *longopts
- = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
- memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
- }
- static void
- gld${EMULATION_NAME}_list_options (FILE *file)
- {
- fprintf (file, _(" -N, --omagic Do not make text readonly, do not page align data (default)\n"));
- fprintf (file, _(" -n, --nmagic Make text readonly, align data to next page\n"));
- fprintf (file, _(" -z, --imagic Make text readonly, separate instruction and data spaces\n"));
- fprintf (file, _(" --no-omagic Equivalent to --nmagic\n"));
- }
- static bool
- gld${EMULATION_NAME}_handle_option (int optc)
- {
- switch (optc)
- {
- default:
- return false;
- case 'z':
- case OPTION_IMAGIC:
- link_info.separate_code = 1;
- /* The --imagic format causes the .text and .data sections to occupy the
- same memory addresses in separate spaces, so don't check overlap. */
- command_line.check_section_addresses = 0;
- break;
- }
- return true;
- }
- /* We need a special case to prepare an additional linker script for option
- * --imagic where the .data section starts at address 0 rather than directly
- * following the .text section or being aligned to the next page after the
- * .text section. */
- static char *
- gld${EMULATION_NAME}_get_script (int *isfile)
- EOF
- if test x"$COMPILE_IN" = xyes
- then
- # Scripts compiled in.
- # sed commands to quote an ld script as a C string.
- sc="-f stringify.sed"
- fragment <<EOF
- {
- *isfile = 0;
- if (bfd_link_relocatable (&link_info) && config.build_constructors)
- return
- EOF
- sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
- echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
- sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
- echo ' ; else if (link_info.separate_code) return' >> e${EMULATION_NAME}.c
- sed $sc ldscripts/${EMULATION_NAME}.xe >> 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.
- fragment <<EOF
- {
- *isfile = 1;
- if (bfd_link_relocatable (&link_info) && config.build_constructors)
- return "ldscripts/${EMULATION_NAME}.xu";
- else if (bfd_link_relocatable (&link_info))
- return "ldscripts/${EMULATION_NAME}.xr";
- else if (link_info.separate_code)
- return "ldscripts/${EMULATION_NAME}.xe";
- else if (!config.text_read_only)
- return "ldscripts/${EMULATION_NAME}.xbn";
- else if (!config.magic_demand_paged)
- return "ldscripts/${EMULATION_NAME}.xn";
- else
- return "ldscripts/${EMULATION_NAME}.x";
- }
- EOF
- fi
- fragment <<EOF
- /* --- \end{pdp11.em} */
- EOF
- LDEMUL_BEFORE_PARSE=gld"$EMULATION_NAME"_before_parse
- LDEMUL_ADD_OPTIONS=gld"$EMULATION_NAME"_add_options
- LDEMUL_HANDLE_OPTION=gld"$EMULATION_NAME"_handle_option
- LDEMUL_LIST_OPTIONS=gld"$EMULATION_NAME"_list_options
- LDEMUL_GET_SCRIPT=gld"$EMULATION_NAME"_get_script
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