Commit | Line | Data |
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252b5132 RH |
1 | # This shell script emits a C file. -*- C -*- |
2 | # It does some substitutions. | |
0c7a8e5a | 3 | if [ -z "$MACHINE" ]; then |
86af25fe L |
4 | OUTPUT_ARCH=${ARCH} |
5 | else | |
6 | OUTPUT_ARCH=${ARCH}:${MACHINE} | |
7 | fi | |
252b5132 RH |
8 | cat >e${EMULATION_NAME}.c <<EOF |
9 | /* This file is is generated by a shell script. DO NOT EDIT! */ | |
10 | ||
11 | /* Handle embedded relocs for MIPS. | |
3bcf5557 AM |
12 | Copyright 1994, 1995, 1997, 2000, 2002, 2003 |
13 | Free Software Foundation, Inc. | |
252b5132 RH |
14 | Written by Ian Lance Taylor <ian@cygnus.com> based on generic.em. |
15 | ||
16 | This file is part of GLD, the Gnu Linker. | |
17 | ||
18 | This program is free software; you can redistribute it and/or modify | |
19 | it under the terms of the GNU General Public License as published by | |
20 | the Free Software Foundation; either version 2 of the License, or | |
21 | (at your option) any later version. | |
22 | ||
23 | This program is distributed in the hope that it will be useful, | |
24 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
26 | GNU General Public License for more details. | |
27 | ||
28 | You should have received a copy of the GNU General Public License | |
29 | along with this program; if not, write to the Free Software | |
30 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
31 | ||
32 | #define TARGET_IS_${EMULATION_NAME} | |
33 | ||
34 | #include "bfd.h" | |
35 | #include "sysdep.h" | |
36 | #include "bfdlink.h" | |
37 | ||
38 | #include "ld.h" | |
39 | #include "ldmain.h" | |
252b5132 RH |
40 | #include "ldmisc.h" |
41 | ||
b71e2778 AM |
42 | #include "ldexp.h" |
43 | #include "ldlang.h" | |
44 | #include "ldfile.h" | |
45 | #include "ldemul.h" | |
46 | ||
0c7a8e5a | 47 | static void check_sections (bfd *, asection *, void *); |
252b5132 RH |
48 | |
49 | static void | |
0c7a8e5a | 50 | gld${EMULATION_NAME}_before_parse (void) |
252b5132 RH |
51 | { |
52 | #ifndef TARGET_ /* I.e., if not generic. */ | |
86af25fe L |
53 | const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}"); |
54 | if (arch) | |
55 | { | |
56 | ldfile_output_architecture = arch->arch; | |
57 | ldfile_output_machine = arch->mach; | |
58 | ldfile_output_machine_name = arch->printable_name; | |
59 | } | |
60 | else | |
61 | ldfile_output_architecture = bfd_arch_${ARCH}; | |
252b5132 RH |
62 | #endif /* not TARGET_ */ |
63 | } | |
64 | ||
65 | /* This function is run after all the input files have been opened. | |
66 | We create a .rel.sdata section for each input file with a non zero | |
67 | .sdata section. The BFD backend will fill in these sections with | |
68 | magic numbers which can be used to relocate the data section at run | |
69 | time. This will only do the right thing if all the input files | |
70 | have been compiled using -membedded-pic. */ | |
71 | ||
72 | static void | |
0c7a8e5a | 73 | gld${EMULATION_NAME}_after_open (void) |
252b5132 RH |
74 | { |
75 | bfd *abfd; | |
76 | ||
77 | if (! command_line.embedded_relocs | |
1049f94e | 78 | || link_info.relocatable) |
252b5132 RH |
79 | return; |
80 | ||
81 | for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next) | |
82 | { | |
83 | asection *datasec; | |
84 | ||
57a6fd07 DB |
85 | /* As first-order business, make sure that each input BFD is ECOFF. It |
86 | better be, as we are directly calling an ECOFF backend function. */ | |
87 | if (bfd_get_flavour (abfd) != bfd_target_ecoff_flavour) | |
88 | einfo ("%F%B: all input objects must be ECOFF for --embedded-relocs\n"); | |
89 | ||
252b5132 RH |
90 | datasec = bfd_get_section_by_name (abfd, ".sdata"); |
91 | ||
92 | /* Note that we assume that the reloc_count field has already | |
93 | been set up. We could call bfd_get_reloc_upper_bound, but | |
94 | that returns the size of a memory buffer rather than a reloc | |
95 | count. We do not want to call bfd_canonicalize_reloc, | |
96 | because although it would always work it would force us to | |
97 | read in the relocs into BFD canonical form, which would waste | |
98 | a significant amount of time and memory. */ | |
99 | if (datasec != NULL && datasec->reloc_count > 0) | |
100 | { | |
101 | asection *relsec; | |
102 | ||
103 | relsec = bfd_make_section (abfd, ".rel.sdata"); | |
104 | if (relsec == NULL | |
105 | || ! bfd_set_section_flags (abfd, relsec, | |
106 | (SEC_ALLOC | |
107 | | SEC_LOAD | |
108 | | SEC_HAS_CONTENTS | |
109 | | SEC_IN_MEMORY)) | |
110 | || ! bfd_set_section_alignment (abfd, relsec, 2) | |
111 | || ! bfd_set_section_size (abfd, relsec, | |
112 | datasec->reloc_count * 4)) | |
113 | einfo ("%F%B: can not create .rel.sdata section: %E\n"); | |
114 | } | |
115 | ||
116 | /* Double check that all other data sections are empty, as is | |
117 | required for embedded PIC code. */ | |
0c7a8e5a | 118 | bfd_map_over_sections (abfd, check_sections, datasec); |
252b5132 RH |
119 | } |
120 | } | |
121 | ||
122 | /* Check that of the data sections, only the .sdata section has | |
123 | relocs. This is called via bfd_map_over_sections. */ | |
124 | ||
125 | static void | |
0c7a8e5a | 126 | check_sections (bfd *abfd, asection *sec, void *sdatasec) |
252b5132 RH |
127 | { |
128 | if ((bfd_get_section_flags (abfd, sec) & SEC_CODE) == 0 | |
0c7a8e5a | 129 | && sec != sdatasec |
252b5132 | 130 | && sec->reloc_count != 0) |
57a6fd07 | 131 | einfo ("%B%X: section %s has relocs; can not use --embedded-relocs\n", |
252b5132 RH |
132 | abfd, bfd_get_section_name (abfd, sec)); |
133 | } | |
134 | ||
135 | /* This function is called after the section sizes and offsets have | |
136 | been set. If we are generating embedded relocs, it calls a special | |
137 | BFD backend routine to do the work. */ | |
138 | ||
139 | static void | |
0c7a8e5a | 140 | gld${EMULATION_NAME}_after_allocation (void) |
252b5132 RH |
141 | { |
142 | bfd *abfd; | |
143 | ||
144 | if (! command_line.embedded_relocs | |
1049f94e | 145 | || link_info.relocatable) |
252b5132 RH |
146 | return; |
147 | ||
148 | for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next) | |
149 | { | |
150 | asection *datasec, *relsec; | |
151 | char *errmsg; | |
152 | ||
153 | datasec = bfd_get_section_by_name (abfd, ".sdata"); | |
154 | ||
155 | if (datasec == NULL || datasec->reloc_count == 0) | |
156 | continue; | |
157 | ||
158 | relsec = bfd_get_section_by_name (abfd, ".rel.sdata"); | |
159 | ASSERT (relsec != NULL); | |
160 | ||
161 | if (! bfd_mips_ecoff_create_embedded_relocs (abfd, &link_info, | |
162 | datasec, relsec, | |
163 | &errmsg)) | |
164 | { | |
165 | if (errmsg == NULL) | |
166 | einfo ("%B%X: can not create runtime reloc information: %E\n", | |
167 | abfd); | |
168 | else | |
169 | einfo ("%X%B: can not create runtime reloc information: %s\n", | |
170 | abfd, errmsg); | |
171 | } | |
172 | } | |
173 | } | |
174 | ||
175 | static char * | |
0c7a8e5a | 176 | gld${EMULATION_NAME}_get_script (int *isfile) |
252b5132 RH |
177 | EOF |
178 | ||
179 | if test -n "$COMPILE_IN" | |
180 | then | |
181 | # Scripts compiled in. | |
182 | ||
183 | # sed commands to quote an ld script as a C string. | |
597e2591 | 184 | sc="-f stringify.sed" |
252b5132 RH |
185 | |
186 | cat >>e${EMULATION_NAME}.c <<EOF | |
0c7a8e5a | 187 | { |
252b5132 RH |
188 | *isfile = 0; |
189 | ||
1049f94e | 190 | if (link_info.relocatable && config.build_constructors) |
252b5132 RH |
191 | return |
192 | EOF | |
b34976b6 | 193 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c |
1049f94e | 194 | echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c |
b34976b6 AM |
195 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c |
196 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
197 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
198 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c | |
199 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
200 | echo ' ; else return' >> e${EMULATION_NAME}.c | |
201 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
202 | echo '; }' >> e${EMULATION_NAME}.c | |
252b5132 RH |
203 | |
204 | else | |
205 | # Scripts read from the filesystem. | |
206 | ||
207 | cat >>e${EMULATION_NAME}.c <<EOF | |
0c7a8e5a | 208 | { |
252b5132 RH |
209 | *isfile = 1; |
210 | ||
1049f94e | 211 | if (link_info.relocatable && config.build_constructors) |
252b5132 | 212 | return "ldscripts/${EMULATION_NAME}.xu"; |
1049f94e | 213 | else if (link_info.relocatable) |
252b5132 RH |
214 | return "ldscripts/${EMULATION_NAME}.xr"; |
215 | else if (!config.text_read_only) | |
216 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
217 | else if (!config.magic_demand_paged) | |
218 | return "ldscripts/${EMULATION_NAME}.xn"; | |
219 | else | |
220 | return "ldscripts/${EMULATION_NAME}.x"; | |
221 | } | |
222 | EOF | |
223 | ||
224 | fi | |
225 | ||
226 | cat >>e${EMULATION_NAME}.c <<EOF | |
227 | ||
0c7a8e5a | 228 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = |
252b5132 RH |
229 | { |
230 | gld${EMULATION_NAME}_before_parse, | |
231 | syslib_default, | |
232 | hll_default, | |
233 | after_parse_default, | |
234 | gld${EMULATION_NAME}_after_open, | |
235 | gld${EMULATION_NAME}_after_allocation, | |
236 | set_output_arch_default, | |
237 | ldemul_default_target, | |
238 | before_allocation_default, | |
239 | gld${EMULATION_NAME}_get_script, | |
240 | "${EMULATION_NAME}", | |
e1c47aa4 AM |
241 | "${OUTPUT_FORMAT}", |
242 | NULL, /* finish */ | |
243 | NULL, /* create output section statements */ | |
244 | NULL, /* open dynamic archive */ | |
245 | NULL, /* place orphan */ | |
246 | NULL, /* set symbols */ | |
247 | NULL, /* parse args */ | |
3bcf5557 AM |
248 | NULL, /* add_options */ |
249 | NULL, /* handle_option */ | |
e1c47aa4 AM |
250 | NULL, /* unrecognized file */ |
251 | NULL, /* list options */ | |
40d109bf | 252 | NULL, /* recognized file */ |
fac1652d AM |
253 | NULL, /* find_potential_libraries */ |
254 | NULL /* new_vers_pattern */ | |
252b5132 RH |
255 | }; |
256 | EOF |