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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 | { | |
62 | /* If we are going to make any variable assignments, we need to let | |
63 | the ELF backend know about them in case the variables are | |
64 | referred to by dynamic objects. */ | |
65 | lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment); | |
66 | ||
67 | /* Let the ELF backend work out the sizes of any sections required | |
68 | by dynamic linking. */ | |
69 | if (! bfd_elf32_size_dynamic_sections (output_bfd, &link_info)) | |
70 | einfo ("%P%F: failed to set dynamic section sizes: %E\n"); | |
71 | } | |
72 | ||
73 | /* This is called by the before_allocation routine via | |
74 | lang_for_each_statement. It locates any assignment statements, and | |
75 | tells the ELF backend about them, in case they are assignments to | |
76 | symbols which are referred to by dynamic objects. */ | |
77 | ||
78 | static void | |
79 | gld${EMULATION_NAME}_find_statement_assignment (s) | |
80 | lang_statement_union_type *s; | |
81 | { | |
82 | if (s->header.type == lang_assignment_statement_enum) | |
83 | gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp); | |
84 | } | |
85 | ||
86 | /* Look through an expression for an assignment statement. */ | |
87 | ||
88 | static void | |
89 | gld${EMULATION_NAME}_find_exp_assignment (exp) | |
90 | etree_type *exp; | |
91 | { | |
92 | switch (exp->type.node_class) | |
93 | { | |
94 | case etree_assign: | |
95 | if (strcmp (exp->assign.dst, ".") != 0) | |
96 | { | |
97 | if (! bfd_elf32_record_link_assignment (output_bfd, &link_info, | |
98 | exp->assign.dst)) | |
99 | einfo ("%P%F: failed to record assignment to %s: %E\n", | |
100 | exp->assign.dst); | |
101 | } | |
102 | gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src); | |
103 | break; | |
104 | ||
105 | case etree_binary: | |
106 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs); | |
107 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs); | |
108 | break; | |
109 | ||
110 | case etree_trinary: | |
111 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); | |
112 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); | |
113 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs); | |
114 | break; | |
115 | ||
116 | case etree_unary: | |
117 | gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child); | |
118 | break; | |
119 | ||
120 | default: | |
121 | break; | |
122 | } | |
123 | } | |
124 | ||
125 | static char * | |
126 | gld${EMULATION_NAME}_get_script(isfile) | |
127 | int *isfile; | |
128 | EOF | |
129 | ||
130 | if test -n "$COMPILE_IN" | |
131 | then | |
132 | # Scripts compiled in. | |
133 | ||
134 | # sed commands to quote an ld script as a C string. | |
135 | sc='s/["\\]/\\&/g | |
136 | s/$/\\n\\/ | |
137 | 1s/^/"/ | |
138 | $s/$/n"/ | |
139 | ' | |
140 | ||
141 | cat >>e${EMULATION_NAME}.c <<EOF | |
142 | { | |
143 | *isfile = 0; | |
144 | ||
145 | if (link_info.relocateable == true && config.build_constructors == true) | |
146 | return `sed "$sc" ldscripts/${EMULATION_NAME}.xu`; | |
147 | else if (link_info.relocateable == true) | |
148 | return `sed "$sc" ldscripts/${EMULATION_NAME}.xr`; | |
149 | else if (!config.text_read_only) | |
150 | return `sed "$sc" ldscripts/${EMULATION_NAME}.xbn`; | |
151 | else if (!config.magic_demand_paged) | |
152 | return `sed "$sc" ldscripts/${EMULATION_NAME}.xn`; | |
153 | else | |
154 | return `sed "$sc" ldscripts/${EMULATION_NAME}.x`; | |
155 | } | |
156 | EOF | |
157 | ||
158 | else | |
159 | # Scripts read from the filesystem. | |
160 | ||
161 | cat >>e${EMULATION_NAME}.c <<EOF | |
162 | { | |
163 | *isfile = 1; | |
164 | ||
165 | if (link_info.relocateable == true && config.build_constructors == true) | |
166 | return "ldscripts/${EMULATION_NAME}.xu"; | |
167 | else if (link_info.relocateable == true) | |
168 | return "ldscripts/${EMULATION_NAME}.xr"; | |
169 | else if (!config.text_read_only) | |
170 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
171 | else if (!config.magic_demand_paged) | |
172 | return "ldscripts/${EMULATION_NAME}.xn"; | |
173 | else | |
174 | return "ldscripts/${EMULATION_NAME}.x"; | |
175 | } | |
176 | EOF | |
177 | ||
178 | fi | |
179 | ||
180 | cat >>e${EMULATION_NAME}.c <<EOF | |
181 | ||
182 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = | |
183 | { | |
184 | gld${EMULATION_NAME}_before_parse, | |
185 | syslib_default, | |
186 | hll_default, | |
187 | after_parse_default, | |
188 | after_allocation_default, | |
189 | set_output_arch_default, | |
190 | ldemul_default_target, | |
191 | gld${EMULATION_NAME}_before_allocation, | |
192 | gld${EMULATION_NAME}_get_script, | |
193 | "${EMULATION_NAME}", | |
194 | "${OUTPUT_FORMAT}" | |
195 | }; | |
196 | EOF |