+# This shell script emits a C file. -*- C -*-
+# Copyright (C) 2006-2020 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${EMULATION_NAME}_list_options (FILE *file)
+{
+ fprintf (file, _(" -N, --omagic Do not make text readonly, do not page align data (default)\n"));
+ fprintf (file, _(" -n, --nmagic Make text readonly, align data to next page\n"));
+ fprintf (file, _(" -z, --imagic Make text readonly, separate instruction and data spaces\n"));
+ fprintf (file, _(" --no-omagic Equivalent to --nmagic\n"));
+}
+
+static bfd_boolean
+gld${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
+# 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}.xn | \
+ sed -e "s/ALIGN($TARGET_PAGE_SIZE)/0/" >> e${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
+
+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
projects / deliverable / binutils-gdb.git / commitdiff
