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252b5132 RH |
1 | # This shell script emits a C file. -*- C -*- |
2 | # It does some substitutions. | |
b34976b6 | 3 | if [ -z "$MACHINE" ]; then |
86af25fe L |
4 | OUTPUT_ARCH=${ARCH} |
5 | else | |
6 | OUTPUT_ARCH=${ARCH}:${MACHINE} | |
7 | fi | |
92b93329 | 8 | fragment <<EOF |
252b5132 RH |
9 | /* This file is is generated by a shell script. DO NOT EDIT! */ |
10 | ||
11 | /* Linux a.out emulation code for ${EMULATION_NAME} | |
b3adc24a | 12 | Copyright (C) 1991-2020 Free Software Foundation, Inc. |
252b5132 RH |
13 | Written by Steve Chamberlain <sac@cygnus.com> |
14 | Linux support by Eric Youngdale <ericy@cais.cais.com> | |
15 | ||
f96b4a7b | 16 | This file is part of the GNU Binutils. |
252b5132 | 17 | |
f96b4a7b NC |
18 | This program is free software; you can redistribute it and/or modify |
19 | it under the terms of the GNU General Public License as published by | |
20 | the Free Software Foundation; either version 3 of the License, or | |
21 | (at your option) any later version. | |
252b5132 | 22 | |
f96b4a7b NC |
23 | This program is distributed in the hope that it will be useful, |
24 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
26 | GNU General Public License for more details. | |
252b5132 | 27 | |
f96b4a7b NC |
28 | You should have received a copy of the GNU General Public License |
29 | along with this program; if not, write to the Free Software | |
30 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
31 | MA 02110-1301, USA. */ | |
252b5132 RH |
32 | |
33 | #define TARGET_IS_${EMULATION_NAME} | |
34 | ||
252b5132 | 35 | #include "sysdep.h" |
3db64b00 | 36 | #include "bfd.h" |
252b5132 | 37 | #include "bfdlink.h" |
1ff6de03 | 38 | #include "ctf-api.h" |
252b5132 RH |
39 | |
40 | #include "ld.h" | |
41 | #include "ldmain.h" | |
252b5132 RH |
42 | #include "ldmisc.h" |
43 | #include "ldexp.h" | |
44 | #include "ldlang.h" | |
b71e2778 AM |
45 | #include "ldfile.h" |
46 | #include "ldemul.h" | |
252b5132 | 47 | |
252b5132 | 48 | static void |
0c7a8e5a | 49 | gld${EMULATION_NAME}_before_parse (void) |
252b5132 | 50 | { |
5e2f1575 | 51 | ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`); |
66be1055 | 52 | input_flags.dynamic = TRUE; |
b34976b6 | 53 | config.has_shared = TRUE; |
5c3261b0 | 54 | link_info.check_relocs_after_open_input = TRUE; |
5fd104ad AM |
55 | EOF |
56 | if test -n "$COMMONPAGESIZE"; then | |
57 | fragment <<EOF | |
576438f0 | 58 | link_info.relro = DEFAULT_LD_Z_RELRO; |
5fd104ad AM |
59 | EOF |
60 | fi | |
61 | fragment <<EOF | |
252b5132 RH |
62 | } |
63 | ||
64 | /* Try to open a dynamic archive. This is where we know that Linux | |
65 | dynamic libraries have an extension of .sa. */ | |
66 | ||
b34976b6 | 67 | static bfd_boolean |
0c7a8e5a AM |
68 | gld${EMULATION_NAME}_open_dynamic_archive |
69 | (const char *arch, search_dirs_type *search, lang_input_statement_type *entry) | |
252b5132 RH |
70 | { |
71 | char *string; | |
72 | ||
d4ae5fb0 | 73 | if (! entry->flags.maybe_archive || entry->flags.full_name_provided) |
b34976b6 | 74 | return FALSE; |
252b5132 RH |
75 | |
76 | string = (char *) xmalloc (strlen (search->name) | |
77 | + strlen (entry->filename) | |
78 | + strlen (arch) | |
79 | + sizeof "/lib.sa"); | |
80 | ||
81 | sprintf (string, "%s/lib%s%s.sa", search->name, entry->filename, arch); | |
82 | ||
83 | if (! ldfile_try_open_bfd (string, entry)) | |
84 | { | |
85 | free (string); | |
b34976b6 | 86 | return FALSE; |
252b5132 RH |
87 | } |
88 | ||
89 | entry->filename = string; | |
90 | ||
b34976b6 | 91 | return TRUE; |
252b5132 RH |
92 | } |
93 | ||
94 | /* This is called by the create_output_section_statements routine via | |
95 | lang_for_each_statement. It locates any address assignment to | |
96 | .text, and modifies it to include the size of the headers. This | |
97 | causes -Ttext to mean the starting address of the header, rather | |
98 | than the starting address of .text, which is compatible with other | |
99 | Linux tools. */ | |
100 | ||
101 | static void | |
0c7a8e5a | 102 | gld${EMULATION_NAME}_find_address_statement (lang_statement_union_type *s) |
252b5132 RH |
103 | { |
104 | if (s->header.type == lang_address_statement_enum | |
105 | && strcmp (s->address_statement.section_name, ".text") == 0) | |
106 | { | |
107 | ASSERT (s->address_statement.address->type.node_class == etree_value); | |
108 | s->address_statement.address->value.value += 0x20; | |
109 | } | |
110 | } | |
111 | ||
112 | /* This is called before opening the input BFD's. */ | |
113 | ||
114 | static void | |
0c7a8e5a | 115 | gld${EMULATION_NAME}_create_output_section_statements (void) |
252b5132 RH |
116 | { |
117 | lang_for_each_statement (gld${EMULATION_NAME}_find_address_statement); | |
118 | } | |
119 | ||
120 | /* This is called after the sections have been attached to output | |
121 | sections, but before any sizes or addresses have been set. */ | |
122 | ||
123 | static void | |
0c7a8e5a | 124 | gld${EMULATION_NAME}_before_allocation (void) |
252b5132 | 125 | { |
0e1862bb | 126 | if (bfd_link_relocatable (&link_info)) |
252b5132 RH |
127 | return; |
128 | ||
129 | /* Let the backend work out the sizes of any sections required by | |
130 | dynamic linking. */ | |
f13a99db AM |
131 | if (! bfd_${EMULATION_NAME}_size_dynamic_sections (link_info.output_bfd, |
132 | &link_info)) | |
df5f2391 | 133 | einfo (_("%F%P: failed to set dynamic section sizes: %E\n")); |
8423293d | 134 | |
1e035701 | 135 | before_allocation_default (); |
252b5132 RH |
136 | } |
137 | ||
138 | static char * | |
0c7a8e5a | 139 | gld${EMULATION_NAME}_get_script (int *isfile) |
252b5132 RH |
140 | EOF |
141 | ||
7225345d | 142 | if test x"$COMPILE_IN" = xyes |
252b5132 RH |
143 | then |
144 | # Scripts compiled in. | |
145 | ||
146 | # sed commands to quote an ld script as a C string. | |
597e2591 | 147 | sc="-f stringify.sed" |
252b5132 | 148 | |
92b93329 | 149 | fragment <<EOF |
b34976b6 | 150 | { |
252b5132 RH |
151 | *isfile = 0; |
152 | ||
0e1862bb | 153 | if (bfd_link_relocatable (&link_info) && config.build_constructors) |
597e2591 | 154 | return |
252b5132 | 155 | EOF |
b34976b6 | 156 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c |
0e1862bb | 157 | echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c |
b34976b6 AM |
158 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c |
159 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
160 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
161 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c | |
162 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
163 | echo ' ; else return' >> e${EMULATION_NAME}.c | |
164 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
165 | echo '; }' >> e${EMULATION_NAME}.c | |
252b5132 RH |
166 | |
167 | else | |
168 | # Scripts read from the filesystem. | |
169 | ||
92b93329 | 170 | fragment <<EOF |
b34976b6 | 171 | { |
252b5132 RH |
172 | *isfile = 1; |
173 | ||
0e1862bb | 174 | if (bfd_link_relocatable (&link_info) && config.build_constructors) |
252b5132 | 175 | return "ldscripts/${EMULATION_NAME}.xu"; |
0e1862bb | 176 | else if (bfd_link_relocatable (&link_info)) |
252b5132 RH |
177 | return "ldscripts/${EMULATION_NAME}.xr"; |
178 | else if (!config.text_read_only) | |
179 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
180 | else if (!config.magic_demand_paged) | |
181 | return "ldscripts/${EMULATION_NAME}.xn"; | |
182 | else | |
183 | return "ldscripts/${EMULATION_NAME}.x"; | |
184 | } | |
185 | EOF | |
186 | ||
187 | fi | |
188 | ||
92b93329 | 189 | fragment <<EOF |
252b5132 | 190 | |
b34976b6 | 191 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = |
252b5132 RH |
192 | { |
193 | gld${EMULATION_NAME}_before_parse, | |
194 | syslib_default, | |
195 | hll_default, | |
196 | after_parse_default, | |
197 | after_open_default, | |
5c3261b0 | 198 | after_check_relocs_default, |
9b538ba7 | 199 | before_place_orphans_default, |
252b5132 RH |
200 | after_allocation_default, |
201 | set_output_arch_default, | |
202 | ldemul_default_target, | |
203 | gld${EMULATION_NAME}_before_allocation, | |
204 | gld${EMULATION_NAME}_get_script, | |
205 | "${EMULATION_NAME}", | |
206 | "${OUTPUT_FORMAT}", | |
1e035701 | 207 | finish_default, |
252b5132 | 208 | gld${EMULATION_NAME}_create_output_section_statements, |
49bdcdba | 209 | gld${EMULATION_NAME}_open_dynamic_archive, |
e1c47aa4 AM |
210 | NULL, /* place orphan */ |
211 | NULL, /* set symbols */ | |
212 | NULL, /* parse args */ | |
3bcf5557 AM |
213 | NULL, /* add_options */ |
214 | NULL, /* handle_option */ | |
e1c47aa4 AM |
215 | NULL, /* unrecognized file */ |
216 | NULL, /* list options */ | |
40d109bf | 217 | NULL, /* recognized file */ |
fac1652d | 218 | NULL, /* find_potential_libraries */ |
7a2f2d82 | 219 | NULL, /* new_vers_pattern */ |
1ff6de03 NA |
220 | NULL, /* extra_map_file_text */ |
221 | ${LDEMUL_EMIT_CTF_EARLY-NULL}, | |
3edf7b9f DR |
222 | ${LDEMUL_EXAMINE_STRTAB_FOR_CTF-NULL}, |
223 | ${LDEMUL_PRINT_SYMBOL-NULL} | |
252b5132 RH |
224 | }; |
225 | EOF |