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20bccb34 NC |
1 | # This shell script emits a C file. -*- C -*- |
2 | # It does some substitutions. | |
92b93329 | 3 | fragment <<EOF |
20bccb34 NC |
4 | /* This file is is generated by a shell script. DO NOT EDIT! */ |
5 | ||
6 | /* Handle embedded relocs for m68k. | |
3db64b00 AM |
7 | Copyright 2000, 2002, 2003, 2004, 2005, 2007 |
8 | Free Software Foundation, Inc. | |
20bccb34 NC |
9 | Written by Michael Sokolov <msokolov@ivan.Harhan.ORG>, based on generic.em |
10 | by Steve Chamberlain <steve@cygnus.com>, embedded relocs code based on | |
11 | mipsecoff.em by Ian Lance Taylor <ian@cygnus.com>. | |
12 | ||
f96b4a7b NC |
13 | This file is part of the GNU Binutils. |
14 | ||
15 | This program is free software; you can redistribute it and/or modify | |
16 | it under the terms of the GNU General Public License as published by | |
17 | the Free Software Foundation; either version 3 of the License, or | |
18 | (at your option) any later version. | |
19 | ||
20 | This program is distributed in the hope that it will be useful, | |
21 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | GNU General Public License for more details. | |
24 | ||
25 | You should have received a copy of the GNU General Public License | |
26 | along with this program; if not, write to the Free Software | |
27 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
28 | MA 02110-1301, USA. */ | |
20bccb34 NC |
29 | |
30 | #define TARGET_IS_${EMULATION_NAME} | |
31 | ||
20bccb34 | 32 | #include "sysdep.h" |
3db64b00 | 33 | #include "bfd.h" |
20bccb34 NC |
34 | #include "bfdlink.h" |
35 | ||
36 | #include "ld.h" | |
37 | #include "ldmain.h" | |
187ffe95 NC |
38 | #include "ldexp.h" |
39 | #include "ldlang.h" | |
20bccb34 | 40 | #include "ldfile.h" |
41392f03 | 41 | #include "ldemul.h" |
20bccb34 NC |
42 | #include "ldmisc.h" |
43 | ||
0c7a8e5a | 44 | static void check_sections (bfd *, asection *, void *); |
20bccb34 NC |
45 | |
46 | static void | |
0c7a8e5a | 47 | gld${EMULATION_NAME}_before_parse (void) |
20bccb34 NC |
48 | { |
49 | #ifndef TARGET_ /* I.e., if not generic. */ | |
5e2f1575 | 50 | ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown); |
20bccb34 NC |
51 | #endif /* not TARGET_ */ |
52 | } | |
53 | ||
54 | /* This function is run after all the input files have been opened. | |
55 | We create a .emreloc section for each input file with a non zero | |
56 | .data section. The BFD backend will fill in these sections with | |
57 | magic numbers which can be used to relocate the data section at run | |
58 | time. */ | |
59 | ||
60 | static void | |
0c7a8e5a | 61 | gld${EMULATION_NAME}_after_open (void) |
20bccb34 NC |
62 | { |
63 | bfd *abfd; | |
64 | ||
65 | if (! command_line.embedded_relocs | |
1049f94e | 66 | || link_info.relocatable) |
20bccb34 NC |
67 | return; |
68 | ||
69 | for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next) | |
70 | { | |
71 | asection *datasec; | |
72 | ||
73 | /* As first-order business, make sure that each input BFD is COFF. It | |
74 | better be, as we are directly calling a COFF backend function. */ | |
75 | if (bfd_get_flavour (abfd) != bfd_target_coff_flavour) | |
76 | einfo ("%F%B: all input objects must be COFF for --embedded-relocs\n"); | |
77 | ||
78 | datasec = bfd_get_section_by_name (abfd, ".data"); | |
79 | ||
80 | /* Note that we assume that the reloc_count field has already | |
81 | been set up. We could call bfd_get_reloc_upper_bound, but | |
82 | that returns the size of a memory buffer rather than a reloc | |
83 | count. We do not want to call bfd_canonicalize_reloc, | |
84 | because although it would always work it would force us to | |
85 | read in the relocs into BFD canonical form, which would waste | |
86 | a significant amount of time and memory. */ | |
87 | if (datasec != NULL && datasec->reloc_count > 0) | |
88 | { | |
89 | asection *relsec; | |
90 | ||
91 | relsec = bfd_make_section (abfd, ".emreloc"); | |
92 | if (relsec == NULL | |
93 | || ! bfd_set_section_flags (abfd, relsec, | |
94 | (SEC_ALLOC | |
95 | | SEC_LOAD | |
96 | | SEC_HAS_CONTENTS | |
97 | | SEC_IN_MEMORY)) | |
98 | || ! bfd_set_section_alignment (abfd, relsec, 2) | |
99 | || ! bfd_set_section_size (abfd, relsec, | |
100 | datasec->reloc_count * 12)) | |
101 | einfo ("%F%B: can not create .emreloc section: %E\n"); | |
102 | } | |
103 | ||
104 | /* Double check that all other data sections are empty, as is | |
105 | required for embedded PIC code. */ | |
1579bae1 | 106 | bfd_map_over_sections (abfd, check_sections, datasec); |
20bccb34 NC |
107 | } |
108 | } | |
109 | ||
110 | /* Check that of the data sections, only the .data section has | |
111 | relocs. This is called via bfd_map_over_sections. */ | |
112 | ||
113 | static void | |
0c7a8e5a | 114 | check_sections (bfd *abfd, asection *sec, void *datasec) |
20bccb34 NC |
115 | { |
116 | if ((bfd_get_section_flags (abfd, sec) & SEC_DATA) | |
0c7a8e5a | 117 | && sec != datasec |
20bccb34 NC |
118 | && sec->reloc_count != 0) |
119 | einfo ("%B%X: section %s has relocs; can not use --embedded-relocs\n", | |
120 | abfd, bfd_get_section_name (abfd, sec)); | |
121 | } | |
122 | ||
123 | /* This function is called after the section sizes and offsets have | |
124 | been set. If we are generating embedded relocs, it calls a special | |
125 | BFD backend routine to do the work. */ | |
126 | ||
127 | static void | |
0c7a8e5a | 128 | gld${EMULATION_NAME}_after_allocation (void) |
20bccb34 NC |
129 | { |
130 | bfd *abfd; | |
131 | ||
132 | if (! command_line.embedded_relocs | |
1049f94e | 133 | || link_info.relocatable) |
20bccb34 NC |
134 | return; |
135 | ||
136 | for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next) | |
137 | { | |
138 | asection *datasec, *relsec; | |
139 | char *errmsg; | |
140 | ||
141 | datasec = bfd_get_section_by_name (abfd, ".data"); | |
142 | ||
143 | if (datasec == NULL || datasec->reloc_count == 0) | |
144 | continue; | |
145 | ||
146 | relsec = bfd_get_section_by_name (abfd, ".emreloc"); | |
147 | ASSERT (relsec != NULL); | |
148 | ||
149 | if (! bfd_m68k_coff_create_embedded_relocs (abfd, &link_info, | |
150 | datasec, relsec, | |
151 | &errmsg)) | |
152 | { | |
153 | if (errmsg == NULL) | |
154 | einfo ("%B%X: can not create runtime reloc information: %E\n", | |
155 | abfd); | |
156 | else | |
157 | einfo ("%X%B: can not create runtime reloc information: %s\n", | |
158 | abfd, errmsg); | |
159 | } | |
160 | } | |
161 | } | |
162 | ||
163 | static char * | |
0c7a8e5a | 164 | gld${EMULATION_NAME}_get_script (int *isfile) |
20bccb34 NC |
165 | EOF |
166 | ||
167 | if test -n "$COMPILE_IN" | |
168 | then | |
169 | # Scripts compiled in. | |
170 | ||
171 | # sed commands to quote an ld script as a C string. | |
172 | sc="-f stringify.sed" | |
173 | ||
92b93329 | 174 | fragment <<EOF |
0c7a8e5a | 175 | { |
20bccb34 NC |
176 | *isfile = 0; |
177 | ||
1049f94e | 178 | if (link_info.relocatable && config.build_constructors) |
20bccb34 NC |
179 | return |
180 | EOF | |
b34976b6 | 181 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c |
1049f94e | 182 | echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c |
b34976b6 AM |
183 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c |
184 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
185 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
186 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c | |
187 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
188 | echo ' ; else return' >> e${EMULATION_NAME}.c | |
189 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
190 | echo '; }' >> e${EMULATION_NAME}.c | |
20bccb34 NC |
191 | |
192 | else | |
193 | # Scripts read from the filesystem. | |
194 | ||
92b93329 | 195 | fragment <<EOF |
0c7a8e5a | 196 | { |
20bccb34 NC |
197 | *isfile = 1; |
198 | ||
1049f94e | 199 | if (link_info.relocatable && config.build_constructors) |
20bccb34 | 200 | return "ldscripts/${EMULATION_NAME}.xu"; |
1049f94e | 201 | else if (link_info.relocatable) |
20bccb34 NC |
202 | return "ldscripts/${EMULATION_NAME}.xr"; |
203 | else if (!config.text_read_only) | |
204 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
205 | else if (!config.magic_demand_paged) | |
206 | return "ldscripts/${EMULATION_NAME}.xn"; | |
207 | else | |
208 | return "ldscripts/${EMULATION_NAME}.x"; | |
209 | } | |
210 | EOF | |
211 | ||
212 | fi | |
213 | ||
92b93329 | 214 | fragment <<EOF |
20bccb34 | 215 | |
0c7a8e5a | 216 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = |
20bccb34 NC |
217 | { |
218 | gld${EMULATION_NAME}_before_parse, | |
219 | syslib_default, | |
220 | hll_default, | |
221 | after_parse_default, | |
222 | gld${EMULATION_NAME}_after_open, | |
223 | gld${EMULATION_NAME}_after_allocation, | |
224 | set_output_arch_default, | |
225 | ldemul_default_target, | |
226 | before_allocation_default, | |
227 | gld${EMULATION_NAME}_get_script, | |
228 | "${EMULATION_NAME}", | |
229 | "${OUTPUT_FORMAT}", | |
1e035701 | 230 | finish_default, |
20bccb34 NC |
231 | NULL, /* create output section statements */ |
232 | NULL, /* open dynamic archive */ | |
233 | NULL, /* place orphan */ | |
234 | NULL, /* set symbols */ | |
235 | NULL, /* parse args */ | |
3bcf5557 AM |
236 | NULL, /* add_options */ |
237 | NULL, /* handle_option */ | |
20bccb34 NC |
238 | NULL, /* unrecognized file */ |
239 | NULL, /* list options */ | |
240 | NULL, /* recognized file */ | |
fac1652d AM |
241 | NULL, /* find_potential_libraries */ |
242 | NULL /* new_vers_pattern */ | |
20bccb34 NC |
243 | }; |
244 | EOF |