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f9e6bfa8 | 1 | # This shell script emits a C file. -*- C -*- |
016687f8 | 2 | # Copyright 2003, 2005, 2007 Free Software Foundation, Inc. |
f9e6bfa8 | 3 | # |
f96b4a7b | 4 | # This file is part of the GNU Binutils. |
f9e6bfa8 AM |
5 | # |
6 | # This program is free software; you can redistribute it and/or modify | |
7 | # it under the terms of the GNU General Public License as published by | |
f96b4a7b | 8 | # the Free Software Foundation; either version 3 of the License, or |
f9e6bfa8 AM |
9 | # (at your option) any later version. |
10 | # | |
11 | # This program is distributed in the hope that it will be useful, | |
12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | # GNU General Public License for more details. | |
15 | # | |
16 | # You should have received a copy of the GNU General Public License | |
17 | # along with this program; if not, write to the Free Software | |
f96b4a7b NC |
18 | # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | # MA 02110-1301, USA. | |
f9e6bfa8 AM |
20 | # |
21 | ||
c9a2f333 | 22 | # This file is sourced from elf32.em, and defines extra powerpc32-elf |
f9e6bfa8 AM |
23 | # specific routines. |
24 | # | |
92b93329 | 25 | fragment <<EOF |
f9e6bfa8 AM |
26 | |
27 | #include "libbfd.h" | |
28 | #include "elf32-ppc.h" | |
29 | ||
c9a2f333 AM |
30 | extern const bfd_target bfd_elf32_powerpc_vec; |
31 | extern const bfd_target bfd_elf32_powerpcle_vec; | |
9d8504b1 PB |
32 | extern const bfd_target bfd_elf32_powerpc_vxworks_vec; |
33 | ||
34 | static inline int | |
35 | is_ppc_elf32_vec(const bfd_target * vec) | |
36 | { | |
37 | return (vec == &bfd_elf32_powerpc_vec | |
38 | || vec == &bfd_elf32_powerpc_vxworks_vec | |
39 | || vec == &bfd_elf32_powerpcle_vec); | |
40 | } | |
c9a2f333 | 41 | |
f9e6bfa8 AM |
42 | /* Whether to run tls optimization. */ |
43 | static int notlsopt = 0; | |
44 | ||
0ba07910 AM |
45 | /* Whether to emit symbols for stubs. */ |
46 | static int emit_stub_syms = 0; | |
47 | ||
0cf7d72c | 48 | /* Chooses the correct place for .plt and .got. */ |
016687f8 | 49 | static enum ppc_elf_plt_type plt_style = PLT_UNSET; |
0cf7d72c AM |
50 | static int old_got = 0; |
51 | ||
52 | static void | |
53 | ppc_after_open (void) | |
54 | { | |
9d8504b1 | 55 | if (is_ppc_elf32_vec (link_info.hash->creator)) |
0cf7d72c AM |
56 | { |
57 | int new_plt; | |
58 | int keep_new; | |
59 | unsigned int num_plt; | |
60 | unsigned int num_got; | |
61 | lang_output_section_statement_type *os; | |
62 | lang_output_section_statement_type *plt_os[2]; | |
63 | lang_output_section_statement_type *got_os[2]; | |
64 | ||
0ba07910 | 65 | emit_stub_syms |= link_info.emitrelocations; |
016687f8 | 66 | new_plt = ppc_elf_select_plt_layout (output_bfd, &link_info, plt_style, |
0ba07910 | 67 | emit_stub_syms); |
0cf7d72c AM |
68 | if (new_plt < 0) |
69 | einfo ("%X%P: select_plt_layout problem %E\n"); | |
70 | ||
71 | num_got = 0; | |
72 | num_plt = 0; | |
73 | for (os = &lang_output_section_statement.head->output_section_statement; | |
74 | os != NULL; | |
75 | os = os->next) | |
76 | { | |
77 | if (os->constraint == SPECIAL && strcmp (os->name, ".plt") == 0) | |
78 | { | |
79 | if (num_plt < 2) | |
80 | plt_os[num_plt] = os; | |
81 | ++num_plt; | |
82 | } | |
83 | if (os->constraint == SPECIAL && strcmp (os->name, ".got") == 0) | |
84 | { | |
85 | if (num_got < 2) | |
86 | got_os[num_got] = os; | |
87 | ++num_got; | |
88 | } | |
89 | } | |
90 | ||
91 | keep_new = new_plt == 1 ? 0 : -1; | |
92 | if (num_plt == 2) | |
93 | { | |
94 | plt_os[0]->constraint = keep_new; | |
95 | plt_os[1]->constraint = ~keep_new; | |
96 | } | |
97 | if (num_got == 2) | |
98 | { | |
99 | if (old_got) | |
100 | keep_new = -1; | |
101 | got_os[0]->constraint = keep_new; | |
102 | got_os[1]->constraint = ~keep_new; | |
103 | } | |
104 | } | |
105 | ||
106 | gld${EMULATION_NAME}_after_open (); | |
107 | } | |
108 | ||
f9e6bfa8 | 109 | static void |
7e5d8d48 | 110 | ppc_before_allocation (void) |
f9e6bfa8 | 111 | { |
9d8504b1 | 112 | if (is_ppc_elf32_vec (link_info.hash->creator)) |
f9e6bfa8 AM |
113 | { |
114 | if (ppc_elf_tls_setup (output_bfd, &link_info) && !notlsopt) | |
115 | { | |
116 | if (!ppc_elf_tls_optimize (output_bfd, &link_info)) | |
117 | { | |
118 | einfo ("%X%P: TLS problem %E\n"); | |
119 | return; | |
120 | } | |
121 | } | |
122 | } | |
123 | gld${EMULATION_NAME}_before_allocation (); | |
124 | } | |
125 | ||
126 | EOF | |
127 | ||
dc27aea4 | 128 | if grep -q 'ld_elf32_spu_emulation' ldemul-list.h; then |
92b93329 | 129 | fragment <<EOF |
dc27aea4 AM |
130 | /* Special handling for embedded SPU executables. */ |
131 | extern bfd_boolean embedded_spu_file (lang_input_statement_type *, const char *); | |
132 | static bfd_boolean gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *); | |
133 | ||
134 | static bfd_boolean | |
135 | ppc_recognized_file (lang_input_statement_type *entry) | |
136 | { | |
137 | if (embedded_spu_file (entry, "-m32")) | |
138 | return TRUE; | |
139 | ||
140 | return gld${EMULATION_NAME}_load_symbols (entry); | |
141 | } | |
142 | ||
143 | EOF | |
144 | LDEMUL_RECOGNIZED_FILE=ppc_recognized_file | |
145 | fi | |
146 | ||
f9e6bfa8 AM |
147 | # Define some shell vars to insert bits of code into the standard elf |
148 | # parse_args and list_options functions. | |
149 | # | |
150 | PARSE_AND_LIST_PROLOGUE=' | |
151 | #define OPTION_NO_TLS_OPT 301 | |
016687f8 AM |
152 | #define OPTION_NEW_PLT 302 |
153 | #define OPTION_OLD_PLT 303 | |
154 | #define OPTION_OLD_GOT 304 | |
155 | #define OPTION_STUBSYMS 305 | |
f9e6bfa8 AM |
156 | ' |
157 | ||
f9e6bfa8 | 158 | PARSE_AND_LIST_LONGOPTS=' |
0ba07910 | 159 | { "emit-stub-syms", no_argument, NULL, OPTION_STUBSYMS }, |
f9e6bfa8 | 160 | { "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT }, |
016687f8 | 161 | { "secure-plt", no_argument, NULL, OPTION_NEW_PLT }, |
0cf7d72c AM |
162 | { "bss-plt", no_argument, NULL, OPTION_OLD_PLT }, |
163 | { "sdata-got", no_argument, NULL, OPTION_OLD_GOT }, | |
f9e6bfa8 AM |
164 | ' |
165 | ||
166 | PARSE_AND_LIST_OPTIONS=' | |
167 | fprintf (file, _("\ | |
442996ee AM |
168 | --emit-stub-syms Label linker stubs with a symbol.\n\ |
169 | --no-tls-optimize Don'\''t try to optimize TLS accesses.\n\ | |
170 | --secure-plt Use new-style PLT if possible.\n\ | |
171 | --bss-plt Force old-style BSS PLT.\n\ | |
172 | --sdata-got Force GOT location just before .sdata.\n" | |
f9e6bfa8 AM |
173 | )); |
174 | ' | |
175 | ||
176 | PARSE_AND_LIST_ARGS_CASES=' | |
0ba07910 AM |
177 | case OPTION_STUBSYMS: |
178 | emit_stub_syms = 1; | |
179 | break; | |
180 | ||
f9e6bfa8 AM |
181 | case OPTION_NO_TLS_OPT: |
182 | notlsopt = 1; | |
183 | break; | |
0cf7d72c | 184 | |
016687f8 AM |
185 | case OPTION_NEW_PLT: |
186 | plt_style = PLT_NEW; | |
187 | break; | |
188 | ||
0cf7d72c | 189 | case OPTION_OLD_PLT: |
016687f8 | 190 | plt_style = PLT_OLD; |
0cf7d72c AM |
191 | break; |
192 | ||
193 | case OPTION_OLD_GOT: | |
194 | old_got = 1; | |
195 | break; | |
f9e6bfa8 AM |
196 | ' |
197 | ||
c9a2f333 | 198 | # Put these extra ppc32elf routines in ld_${EMULATION_NAME}_emulation |
f9e6bfa8 | 199 | # |
0cf7d72c | 200 | LDEMUL_AFTER_OPEN=ppc_after_open |
f9e6bfa8 | 201 | LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation |