Commit | Line | Data |
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252b5132 RH |
1 | # This shell script emits a C file. -*- C -*- |
2 | # It does some substitutions. | |
86af25fe L |
3 | if [ -z "$MACHINE" ]; then |
4 | OUTPUT_ARCH=${ARCH} | |
5 | else | |
6 | OUTPUT_ARCH=${ARCH}:${MACHINE} | |
7 | fi | |
252b5132 RH |
8 | cat >e${EMULATION_NAME}.c <<EOF |
9 | /* This file is is generated by a shell script. DO NOT EDIT! */ | |
10 | ||
11 | /* Linux a.out emulation code for ${EMULATION_NAME} | |
a2b64bed | 12 | Copyright 1991, 1993, 1994, 1995, 1996, 1998, 1999, 2000 |
b71e2778 | 13 | Free Software Foundation, Inc. |
252b5132 RH |
14 | Written by Steve Chamberlain <sac@cygnus.com> |
15 | Linux support by Eric Youngdale <ericy@cais.cais.com> | |
16 | ||
17 | This file is part of GLD, the Gnu Linker. | |
18 | ||
19 | This program is free software; you can redistribute it and/or modify | |
20 | it under the terms of the GNU General Public License as published by | |
21 | the Free Software Foundation; either version 2 of the License, or | |
22 | (at your option) any later version. | |
23 | ||
24 | This program is distributed in the hope that it will be useful, | |
25 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | GNU General Public License for more details. | |
28 | ||
29 | You should have received a copy of the GNU General Public License | |
30 | along with this program; if not, write to the Free Software | |
31 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
32 | ||
33 | #define TARGET_IS_${EMULATION_NAME} | |
34 | ||
35 | #include "bfd.h" | |
36 | #include "sysdep.h" | |
37 | #include "bfdlink.h" | |
38 | ||
39 | #include "ld.h" | |
40 | #include "ldmain.h" | |
252b5132 RH |
41 | #include "ldmisc.h" |
42 | #include "ldexp.h" | |
43 | #include "ldlang.h" | |
b71e2778 AM |
44 | #include "ldfile.h" |
45 | #include "ldemul.h" | |
252b5132 RH |
46 | |
47 | static void gld${EMULATION_NAME}_before_parse PARAMS ((void)); | |
48 | static boolean gld${EMULATION_NAME}_open_dynamic_archive | |
49 | PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *)); | |
50 | static void gld${EMULATION_NAME}_find_address_statement | |
51 | PARAMS ((lang_statement_union_type *)); | |
52 | static void gld${EMULATION_NAME}_create_output_section_statements | |
53 | PARAMS ((void)); | |
54 | static void gld${EMULATION_NAME}_before_allocation PARAMS ((void)); | |
55 | static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile)); | |
56 | ||
57 | static void | |
58 | gld${EMULATION_NAME}_before_parse() | |
59 | { | |
86af25fe L |
60 | const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}"); |
61 | if (arch) | |
62 | { | |
63 | ldfile_output_architecture = arch->arch; | |
64 | ldfile_output_machine = arch->mach; | |
65 | ldfile_output_machine_name = arch->printable_name; | |
66 | } | |
67 | else | |
68 | ldfile_output_architecture = bfd_arch_${ARCH}; | |
252b5132 RH |
69 | config.dynamic_link = true; |
70 | config.has_shared = true; | |
71 | } | |
72 | ||
73 | /* Try to open a dynamic archive. This is where we know that Linux | |
74 | dynamic libraries have an extension of .sa. */ | |
75 | ||
76 | static boolean | |
77 | gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry) | |
78 | const char *arch; | |
79 | search_dirs_type *search; | |
80 | lang_input_statement_type *entry; | |
81 | { | |
82 | char *string; | |
83 | ||
84 | if (! entry->is_archive) | |
85 | return false; | |
86 | ||
87 | string = (char *) xmalloc (strlen (search->name) | |
88 | + strlen (entry->filename) | |
89 | + strlen (arch) | |
90 | + sizeof "/lib.sa"); | |
91 | ||
92 | sprintf (string, "%s/lib%s%s.sa", search->name, entry->filename, arch); | |
93 | ||
94 | if (! ldfile_try_open_bfd (string, entry)) | |
95 | { | |
96 | free (string); | |
97 | return false; | |
98 | } | |
99 | ||
100 | entry->filename = string; | |
101 | ||
102 | return true; | |
103 | } | |
104 | ||
105 | /* This is called by the create_output_section_statements routine via | |
106 | lang_for_each_statement. It locates any address assignment to | |
107 | .text, and modifies it to include the size of the headers. This | |
108 | causes -Ttext to mean the starting address of the header, rather | |
109 | than the starting address of .text, which is compatible with other | |
110 | Linux tools. */ | |
111 | ||
112 | static void | |
113 | gld${EMULATION_NAME}_find_address_statement (s) | |
114 | lang_statement_union_type *s; | |
115 | { | |
116 | if (s->header.type == lang_address_statement_enum | |
117 | && strcmp (s->address_statement.section_name, ".text") == 0) | |
118 | { | |
119 | ASSERT (s->address_statement.address->type.node_class == etree_value); | |
120 | s->address_statement.address->value.value += 0x20; | |
121 | } | |
122 | } | |
123 | ||
124 | /* This is called before opening the input BFD's. */ | |
125 | ||
126 | static void | |
127 | gld${EMULATION_NAME}_create_output_section_statements () | |
128 | { | |
129 | lang_for_each_statement (gld${EMULATION_NAME}_find_address_statement); | |
130 | } | |
131 | ||
132 | /* This is called after the sections have been attached to output | |
133 | sections, but before any sizes or addresses have been set. */ | |
134 | ||
135 | static void | |
136 | gld${EMULATION_NAME}_before_allocation () | |
137 | { | |
138 | if (link_info.relocateable) | |
139 | return; | |
140 | ||
141 | /* Let the backend work out the sizes of any sections required by | |
142 | dynamic linking. */ | |
143 | if (! bfd_${EMULATION_NAME}_size_dynamic_sections (output_bfd, &link_info)) | |
144 | einfo ("%P%F: failed to set dynamic section sizes: %E\n"); | |
145 | } | |
146 | ||
147 | static char * | |
148 | gld${EMULATION_NAME}_get_script(isfile) | |
149 | int *isfile; | |
150 | EOF | |
151 | ||
152 | if test -n "$COMPILE_IN" | |
153 | then | |
154 | # Scripts compiled in. | |
155 | ||
156 | # sed commands to quote an ld script as a C string. | |
597e2591 | 157 | sc="-f stringify.sed" |
252b5132 RH |
158 | |
159 | cat >>e${EMULATION_NAME}.c <<EOF | |
160 | { | |
161 | *isfile = 0; | |
162 | ||
163 | if (link_info.relocateable == true && config.build_constructors == true) | |
597e2591 | 164 | return |
252b5132 | 165 | EOF |
597e2591 ILT |
166 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c |
167 | echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c | |
168 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c | |
169 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
170 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
171 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c | |
172 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
173 | echo ' ; else return' >> e${EMULATION_NAME}.c | |
174 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
175 | echo '; }' >> e${EMULATION_NAME}.c | |
252b5132 RH |
176 | |
177 | else | |
178 | # Scripts read from the filesystem. | |
179 | ||
180 | cat >>e${EMULATION_NAME}.c <<EOF | |
181 | { | |
182 | *isfile = 1; | |
183 | ||
184 | if (link_info.relocateable == true && config.build_constructors == true) | |
185 | return "ldscripts/${EMULATION_NAME}.xu"; | |
186 | else if (link_info.relocateable == true) | |
187 | return "ldscripts/${EMULATION_NAME}.xr"; | |
188 | else if (!config.text_read_only) | |
189 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
190 | else if (!config.magic_demand_paged) | |
191 | return "ldscripts/${EMULATION_NAME}.xn"; | |
192 | else | |
193 | return "ldscripts/${EMULATION_NAME}.x"; | |
194 | } | |
195 | EOF | |
196 | ||
197 | fi | |
198 | ||
199 | cat >>e${EMULATION_NAME}.c <<EOF | |
200 | ||
201 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = | |
202 | { | |
203 | gld${EMULATION_NAME}_before_parse, | |
204 | syslib_default, | |
205 | hll_default, | |
206 | after_parse_default, | |
207 | after_open_default, | |
208 | after_allocation_default, | |
209 | set_output_arch_default, | |
210 | ldemul_default_target, | |
211 | gld${EMULATION_NAME}_before_allocation, | |
212 | gld${EMULATION_NAME}_get_script, | |
213 | "${EMULATION_NAME}", | |
214 | "${OUTPUT_FORMAT}", | |
e1c47aa4 | 215 | NULL, /* finish */ |
252b5132 | 216 | gld${EMULATION_NAME}_create_output_section_statements, |
49bdcdba | 217 | gld${EMULATION_NAME}_open_dynamic_archive, |
e1c47aa4 AM |
218 | NULL, /* place orphan */ |
219 | NULL, /* set symbols */ | |
220 | NULL, /* parse args */ | |
221 | NULL, /* unrecognized file */ | |
222 | NULL, /* list options */ | |
40d109bf AM |
223 | NULL, /* recognized file */ |
224 | NULL /* find_potential_libraries */ | |
252b5132 RH |
225 | }; |
226 | EOF |