| 1 | # This shell script emits a C file. -*- C -*- |
| 2 | # It does some substitutions. |
| 3 | if [ -z "$MACHINE" ]; then |
| 4 | OUTPUT_ARCH=${ARCH} |
| 5 | else |
| 6 | OUTPUT_ARCH=${ARCH}:${MACHINE} |
| 7 | fi |
| 8 | fragment <<EOF |
| 9 | /* This file is is generated by a shell script. DO NOT EDIT! */ |
| 10 | |
| 11 | /* Linux a.out emulation code for ${EMULATION_NAME} |
| 12 | Copyright 1991, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, |
| 13 | 2003, 2004, 2005, 2007, 2008, 2012 Free Software Foundation, Inc. |
| 14 | Written by Steve Chamberlain <sac@cygnus.com> |
| 15 | Linux support by Eric Youngdale <ericy@cais.cais.com> |
| 16 | |
| 17 | This file is part of the GNU Binutils. |
| 18 | |
| 19 | This program is free software; you can redistribute it and/or modify |
| 20 | it under the terms of the GNU General Public License as published by |
| 21 | the Free Software Foundation; either version 3 of the License, or |
| 22 | (at your option) any later version. |
| 23 | |
| 24 | This program is distributed in the hope that it will be useful, |
| 25 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 26 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 27 | GNU General Public License for more details. |
| 28 | |
| 29 | You should have received a copy of the GNU General Public License |
| 30 | along with this program; if not, write to the Free Software |
| 31 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 32 | MA 02110-1301, USA. */ |
| 33 | |
| 34 | #define TARGET_IS_${EMULATION_NAME} |
| 35 | |
| 36 | #include "sysdep.h" |
| 37 | #include "bfd.h" |
| 38 | #include "bfdlink.h" |
| 39 | |
| 40 | #include "ld.h" |
| 41 | #include "ldmain.h" |
| 42 | #include "ldmisc.h" |
| 43 | #include "ldexp.h" |
| 44 | #include "ldlang.h" |
| 45 | #include "ldfile.h" |
| 46 | #include "ldemul.h" |
| 47 | |
| 48 | static void |
| 49 | gld${EMULATION_NAME}_before_parse (void) |
| 50 | { |
| 51 | ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`); |
| 52 | input_flags.dynamic = TRUE; |
| 53 | config.has_shared = TRUE; |
| 54 | } |
| 55 | |
| 56 | /* Try to open a dynamic archive. This is where we know that Linux |
| 57 | dynamic libraries have an extension of .sa. */ |
| 58 | |
| 59 | static bfd_boolean |
| 60 | gld${EMULATION_NAME}_open_dynamic_archive |
| 61 | (const char *arch, search_dirs_type *search, lang_input_statement_type *entry) |
| 62 | { |
| 63 | char *string; |
| 64 | |
| 65 | if (! entry->flags.maybe_archive) |
| 66 | return FALSE; |
| 67 | |
| 68 | string = (char *) xmalloc (strlen (search->name) |
| 69 | + strlen (entry->filename) |
| 70 | + strlen (arch) |
| 71 | + sizeof "/lib.sa"); |
| 72 | |
| 73 | sprintf (string, "%s/lib%s%s.sa", search->name, entry->filename, arch); |
| 74 | |
| 75 | if (! ldfile_try_open_bfd (string, entry)) |
| 76 | { |
| 77 | free (string); |
| 78 | return FALSE; |
| 79 | } |
| 80 | |
| 81 | entry->filename = string; |
| 82 | |
| 83 | return TRUE; |
| 84 | } |
| 85 | |
| 86 | /* This is called by the create_output_section_statements routine via |
| 87 | lang_for_each_statement. It locates any address assignment to |
| 88 | .text, and modifies it to include the size of the headers. This |
| 89 | causes -Ttext to mean the starting address of the header, rather |
| 90 | than the starting address of .text, which is compatible with other |
| 91 | Linux tools. */ |
| 92 | |
| 93 | static void |
| 94 | gld${EMULATION_NAME}_find_address_statement (lang_statement_union_type *s) |
| 95 | { |
| 96 | if (s->header.type == lang_address_statement_enum |
| 97 | && strcmp (s->address_statement.section_name, ".text") == 0) |
| 98 | { |
| 99 | ASSERT (s->address_statement.address->type.node_class == etree_value); |
| 100 | s->address_statement.address->value.value += 0x20; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | /* This is called before opening the input BFD's. */ |
| 105 | |
| 106 | static void |
| 107 | gld${EMULATION_NAME}_create_output_section_statements (void) |
| 108 | { |
| 109 | lang_for_each_statement (gld${EMULATION_NAME}_find_address_statement); |
| 110 | } |
| 111 | |
| 112 | /* This is called after the sections have been attached to output |
| 113 | sections, but before any sizes or addresses have been set. */ |
| 114 | |
| 115 | static void |
| 116 | gld${EMULATION_NAME}_before_allocation (void) |
| 117 | { |
| 118 | if (link_info.relocatable) |
| 119 | return; |
| 120 | |
| 121 | /* Let the backend work out the sizes of any sections required by |
| 122 | dynamic linking. */ |
| 123 | if (! bfd_${EMULATION_NAME}_size_dynamic_sections (link_info.output_bfd, |
| 124 | &link_info)) |
| 125 | einfo ("%P%F: failed to set dynamic section sizes: %E\n"); |
| 126 | |
| 127 | before_allocation_default (); |
| 128 | } |
| 129 | |
| 130 | static char * |
| 131 | gld${EMULATION_NAME}_get_script (int *isfile) |
| 132 | EOF |
| 133 | |
| 134 | if test -n "$COMPILE_IN" |
| 135 | then |
| 136 | # Scripts compiled in. |
| 137 | |
| 138 | # sed commands to quote an ld script as a C string. |
| 139 | sc="-f stringify.sed" |
| 140 | |
| 141 | fragment <<EOF |
| 142 | { |
| 143 | *isfile = 0; |
| 144 | |
| 145 | if (link_info.relocatable && config.build_constructors) |
| 146 | return |
| 147 | EOF |
| 148 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c |
| 149 | echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c |
| 150 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c |
| 151 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c |
| 152 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c |
| 153 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c |
| 154 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c |
| 155 | echo ' ; else return' >> e${EMULATION_NAME}.c |
| 156 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c |
| 157 | echo '; }' >> e${EMULATION_NAME}.c |
| 158 | |
| 159 | else |
| 160 | # Scripts read from the filesystem. |
| 161 | |
| 162 | fragment <<EOF |
| 163 | { |
| 164 | *isfile = 1; |
| 165 | |
| 166 | if (link_info.relocatable && config.build_constructors) |
| 167 | return "ldscripts/${EMULATION_NAME}.xu"; |
| 168 | else if (link_info.relocatable) |
| 169 | return "ldscripts/${EMULATION_NAME}.xr"; |
| 170 | else if (!config.text_read_only) |
| 171 | return "ldscripts/${EMULATION_NAME}.xbn"; |
| 172 | else if (!config.magic_demand_paged) |
| 173 | return "ldscripts/${EMULATION_NAME}.xn"; |
| 174 | else |
| 175 | return "ldscripts/${EMULATION_NAME}.x"; |
| 176 | } |
| 177 | EOF |
| 178 | |
| 179 | fi |
| 180 | |
| 181 | fragment <<EOF |
| 182 | |
| 183 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = |
| 184 | { |
| 185 | gld${EMULATION_NAME}_before_parse, |
| 186 | syslib_default, |
| 187 | hll_default, |
| 188 | after_parse_default, |
| 189 | after_open_default, |
| 190 | after_allocation_default, |
| 191 | set_output_arch_default, |
| 192 | ldemul_default_target, |
| 193 | gld${EMULATION_NAME}_before_allocation, |
| 194 | gld${EMULATION_NAME}_get_script, |
| 195 | "${EMULATION_NAME}", |
| 196 | "${OUTPUT_FORMAT}", |
| 197 | finish_default, |
| 198 | gld${EMULATION_NAME}_create_output_section_statements, |
| 199 | gld${EMULATION_NAME}_open_dynamic_archive, |
| 200 | NULL, /* place orphan */ |
| 201 | NULL, /* set symbols */ |
| 202 | NULL, /* parse args */ |
| 203 | NULL, /* add_options */ |
| 204 | NULL, /* handle_option */ |
| 205 | NULL, /* unrecognized file */ |
| 206 | NULL, /* list options */ |
| 207 | NULL, /* recognized file */ |
| 208 | NULL, /* find_potential_libraries */ |
| 209 | NULL /* new_vers_pattern */ |
| 210 | }; |
| 211 | EOF |