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2a9fa50c ILT |
1 | # This shell script emits a C file. -*- C -*- |
2 | # It does some substitutions. | |
3 | cat >e${EMULATION_NAME}.c <<EOF | |
4 | /* This file is is generated by a shell script. DO NOT EDIT! */ | |
5 | ||
6 | /* 32 bit ELF emulation code for ${EMULATION_NAME} | |
7 | Copyright (C) 1991, 1993, 1994 Free Software Foundation, Inc. | |
8 | Written by Steve Chamberlain <sac@cygnus.com> | |
9 | ELF support by Ian Lance Taylor <ian@cygnus.com> | |
10 | ||
11 | This file is part of GLD, the Gnu Linker. | |
12 | ||
13 | This program is free software; you can redistribute it and/or modify | |
14 | it under the terms of the GNU General Public License as published by | |
15 | the Free Software Foundation; either version 2 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | This program is distributed in the hope that it will be useful, | |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
24 | along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
26 | ||
27 | #define TARGET_IS_${EMULATION_NAME} | |
28 | ||
29 | #include "bfd.h" | |
30 | #include "sysdep.h" | |
31 | #include "bfdlink.h" | |
32 | ||
33 | #include "ld.h" | |
34 | #include "config.h" | |
35 | #include "ldmain.h" | |
36 | #include "ldemul.h" | |
37 | #include "ldfile.h" | |
38 | #include "ldmisc.h" | |
39 | #include "ldexp.h" | |
40 | #include "ldlang.h" | |
41 | ||
42 | static void gld${EMULATION_NAME}_before_parse PARAMS ((void)); | |
43 | static void gld${EMULATION_NAME}_before_allocation PARAMS ((void)); | |
44 | static void gld${EMULATION_NAME}_find_statement_assignment | |
45 | PARAMS ((lang_statement_union_type *)); | |
46 | static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *)); | |
47 | static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile)); | |
48 | ||
49 | static void | |
50 | gld${EMULATION_NAME}_before_parse() | |
51 | { | |
52 | ldfile_output_architecture = bfd_arch_${ARCH}; | |
53 | config.dynamic_link = true; | |
54 | } | |
55 | ||
56 | /* This is called after the sections have been attached to output | |
57 | sections, but before any sizes or addresses have been set. */ | |
58 | ||
59 | static void | |
60 | gld${EMULATION_NAME}_before_allocation () | |
61 | { | |
7fb9ca5f ILT |
62 | asection *sinterp; |
63 | ||
2a9fa50c ILT |
64 | /* If we are going to make any variable assignments, we need to let |
65 | the ELF backend know about them in case the variables are | |
66 | referred to by dynamic objects. */ | |
67 | lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment); | |
68 | ||
69 | /* Let the ELF backend work out the sizes of any sections required | |
70 | by dynamic linking. */ | |
7fb9ca5f ILT |
71 | if (! bfd_elf32_size_dynamic_sections (output_bfd, &link_info, |
72 | &sinterp)) | |
2a9fa50c | 73 | einfo ("%P%F: failed to set dynamic section sizes: %E\n"); |
7fb9ca5f ILT |
74 | |
75 | /* Let the user override the dynamic linker we are using. */ | |
76 | if (command_line.interpreter != NULL | |
77 | && sinterp != NULL) | |
78 | { | |
79 | sinterp->contents = (bfd_byte *) command_line.interpreter; | |
80 | sinterp->_raw_size = strlen (command_line.interpreter) + 1; | |
81 | } | |
2a9fa50c ILT |
82 | } |
83 | ||
84 | /* This is called by the before_allocation routine via | |
85 | lang_for_each_statement. It locates any assignment statements, and | |
86 | tells the ELF backend about them, in case they are assignments to | |
87 | symbols which are referred to by dynamic objects. */ | |
88 | ||
89 | static void | |
90 | gld${EMULATION_NAME}_find_statement_assignment (s) | |
91 | lang_statement_union_type *s; | |
92 | { | |
93 | if (s->header.type == lang_assignment_statement_enum) | |
94 | gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp); | |
95 | } | |
96 | ||
97 | /* Look through an expression for an assignment statement. */ | |
98 | ||
99 | static void | |
100 | gld${EMULATION_NAME}_find_exp_assignment (exp) | |
101 | etree_type *exp; | |
102 | { | |
103 | switch (exp->type.node_class) | |
104 | { | |
105 | case etree_assign: | |
106 | if (strcmp (exp->assign.dst, ".") != 0) | |
107 | { | |
108 | if (! bfd_elf32_record_link_assignment (output_bfd, &link_info, | |
109 | exp->assign.dst)) | |
110 | einfo ("%P%F: failed to record assignment to %s: %E\n", | |
111 | exp->assign.dst); | |
112 | } | |
113 | gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src); | |
114 | break; | |
115 | ||
116 | case etree_binary: | |
117 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs); | |
118 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs); | |
119 | break; | |
120 | ||
121 | case etree_trinary: | |
122 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); | |
123 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); | |
124 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs); | |
125 | break; | |
126 | ||
127 | case etree_unary: | |
128 | gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child); | |
129 | break; | |
130 | ||
131 | default: | |
132 | break; | |
133 | } | |
134 | } | |
135 | ||
136 | static char * | |
137 | gld${EMULATION_NAME}_get_script(isfile) | |
138 | int *isfile; | |
139 | EOF | |
140 | ||
141 | if test -n "$COMPILE_IN" | |
142 | then | |
143 | # Scripts compiled in. | |
144 | ||
145 | # sed commands to quote an ld script as a C string. | |
146 | sc='s/["\\]/\\&/g | |
147 | s/$/\\n\\/ | |
148 | 1s/^/"/ | |
149 | $s/$/n"/ | |
150 | ' | |
151 | ||
152 | cat >>e${EMULATION_NAME}.c <<EOF | |
153 | { | |
154 | *isfile = 0; | |
155 | ||
156 | if (link_info.relocateable == true && config.build_constructors == true) | |
157 | return `sed "$sc" ldscripts/${EMULATION_NAME}.xu`; | |
158 | else if (link_info.relocateable == true) | |
159 | return `sed "$sc" ldscripts/${EMULATION_NAME}.xr`; | |
160 | else if (!config.text_read_only) | |
161 | return `sed "$sc" ldscripts/${EMULATION_NAME}.xbn`; | |
162 | else if (!config.magic_demand_paged) | |
163 | return `sed "$sc" ldscripts/${EMULATION_NAME}.xn`; | |
164 | else | |
165 | return `sed "$sc" ldscripts/${EMULATION_NAME}.x`; | |
166 | } | |
167 | EOF | |
168 | ||
169 | else | |
170 | # Scripts read from the filesystem. | |
171 | ||
172 | cat >>e${EMULATION_NAME}.c <<EOF | |
173 | { | |
174 | *isfile = 1; | |
175 | ||
176 | if (link_info.relocateable == true && config.build_constructors == true) | |
177 | return "ldscripts/${EMULATION_NAME}.xu"; | |
178 | else if (link_info.relocateable == true) | |
179 | return "ldscripts/${EMULATION_NAME}.xr"; | |
180 | else if (!config.text_read_only) | |
181 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
182 | else if (!config.magic_demand_paged) | |
183 | return "ldscripts/${EMULATION_NAME}.xn"; | |
184 | else | |
185 | return "ldscripts/${EMULATION_NAME}.x"; | |
186 | } | |
187 | EOF | |
188 | ||
189 | fi | |
190 | ||
191 | cat >>e${EMULATION_NAME}.c <<EOF | |
192 | ||
193 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = | |
194 | { | |
195 | gld${EMULATION_NAME}_before_parse, | |
196 | syslib_default, | |
197 | hll_default, | |
198 | after_parse_default, | |
199 | after_allocation_default, | |
200 | set_output_arch_default, | |
201 | ldemul_default_target, | |
202 | gld${EMULATION_NAME}_before_allocation, | |
203 | gld${EMULATION_NAME}_get_script, | |
204 | "${EMULATION_NAME}", | |
205 | "${OUTPUT_FORMAT}" | |
206 | }; | |
207 | EOF |