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comparison gcc/collect2-aix.h @ 55:77e2b8dfacca gcc-4.4.5

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update it from 4.4.3 to 4.5.0
author ryoma <e075725@ie.u-ryukyu.ac.jp>
date Fri, 12 Feb 2010 23:39:51 +0900
parents
children 04ced10e8804
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52:c156f1bd5cd9 55:77e2b8dfacca
1 /* AIX cross support for collect2.
2 Copyright (C) 2009 Free Software Foundation, Inc.
3
4 This file is part of GCC.
5
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
9 version.
10
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
19
20 /* collect2-aix.c requires mmap support. It should otherwise be
21 fairly portable. */
22 #if defined(CROSS_DIRECTORY_STRUCTURE) \
23 && defined(TARGET_AIX_VERSION) \
24 && HAVE_MMAP
25
26 #define CROSS_AIX_SUPPORT 1
27
28 /* -------------------------------------------------------------------------
29 Definitions adapted from bfd. (Fairly heavily adapted in some cases.)
30 ------------------------------------------------------------------------- */
31
32 /* Compatiblity types for bfd. */
33 typedef unsigned HOST_WIDE_INT bfd_vma;
34
35 /* The size of an archive's fl_magic field. */
36 #define FL_MAGIC_SIZE 8
37
38 /* The expected contents of fl_magic for big archives. */
39 #define FL_MAGIC_BIG_AR "<bigaf>\012"
40
41 /* The size of each offset string in the header of a big archive. */
42 #define AR_BIG_OFFSET_SIZE 20
43
44 /* The format of the file header in a "big" XCOFF archive. */
45 struct external_big_ar_filehdr
46 {
47 /* Magic string. */
48 char fl_magic[FL_MAGIC_SIZE];
49
50 /* Offset of the member table (decimal ASCII string). */
51 char fl_memoff[AR_BIG_OFFSET_SIZE];
52
53 /* Offset of the global symbol table for 32-bit objects (decimal ASCII
54 string). */
55 char fl_symoff[AR_BIG_OFFSET_SIZE];
56
57 /* Offset of the global symbol table for 64-bit objects (decimal ASCII
58 string). */
59 char fl_symoff64[AR_BIG_OFFSET_SIZE];
60
61 /* Offset of the first member in the archive (decimal ASCII string). */
62 char fl_firstmemoff[AR_BIG_OFFSET_SIZE];
63
64 /* Offset of the last member in the archive (decimal ASCII string). */
65 char fl_lastmemoff[AR_BIG_OFFSET_SIZE];
66
67 /* Offset of the first member on the free list (decimal ASCII
68 string). */
69 char fl_freeoff[AR_BIG_OFFSET_SIZE];
70 };
71
72 /* Each archive name is followed by this many bytes of magic string. */
73 #define SXCOFFARFMAG 2
74
75 /* The format of a member header in a "big" XCOFF archive. */
76 struct external_big_ar_member
77 {
78 /* File size not including the header (decimal ASCII string). */
79 char ar_size[AR_BIG_OFFSET_SIZE];
80
81 /* File offset of next archive member (decimal ASCII string). */
82 char ar_nextoff[AR_BIG_OFFSET_SIZE];
83
84 /* File offset of previous archive member (decimal ASCII string). */
85 char ar_prevoff[AR_BIG_OFFSET_SIZE];
86
87 /* File mtime (decimal ASCII string). */
88 char ar_date[12];
89
90 /* File UID (decimal ASCII string). */
91 char ar_uid[12];
92
93 /* File GID (decimal ASCII string). */
94 char ar_gid[12];
95
96 /* File mode (octal ASCII string). */
97 char ar_mode[12];
98
99 /* Length of file name (decimal ASCII string). */
100 char ar_namlen[4];
101
102 /* This structure is followed by the file name. The length of the
103 name is given in the namlen field. If the length of the name is
104 odd, the name is followed by a null byte. The name and optional
105 null byte are followed by XCOFFARFMAG, which is not included in
106 namlen. The contents of the archive member follow; the number of
107 bytes is given in the size field. */
108 };
109
110 /* The known values of f_magic in an XCOFF file header. */
111 #define U802WRMAGIC 0730 /* Writeable text segments. */
112 #define U802ROMAGIC 0735 /* Readonly sharable text segments. */
113 #define U802TOCMAGIC 0737 /* Readonly text segments and TOC. */
114 #define U803XTOCMAGIC 0757 /* Aix 4.3 64-bit XCOFF. */
115 #define U64_TOCMAGIC 0767 /* AIX 5+ 64-bit XCOFF. */
116
117 /* The number of bytes in an XCOFF file's f_magic field. */
118 #define F_MAGIC_SIZE 2
119
120 /* The format of a 32-bit XCOFF file header. */
121 struct external_filehdr_32
122 {
123 /* The magic number. */
124 char f_magic[F_MAGIC_SIZE];
125
126 /* The number of sections. */
127 char f_nscns[2];
128
129 /* Time & date stamp. */
130 char f_timdat[4];
131
132 /* The offset of the symbol table from the start of the file. */
133 char f_symptr[4];
134
135 /* The number of entries in the symbol table. */
136 char f_nsyms[4];
137
138 /* The size of the auxillary header. */
139 char f_opthdr[2];
140
141 /* Flags. */
142 char f_flags[2];
143 };
144
145 /* The format of a 64-bit XCOFF file header. */
146 struct external_filehdr_64
147 {
148 /* The magic number. */
149 char f_magic[F_MAGIC_SIZE];
150
151 /* The number of sections. */
152 char f_nscns[2];
153
154 /* Time & date stamp. */
155 char f_timdat[4];
156
157 /* The offset of the symbol table from the start of the file. */
158 char f_symptr[8];
159
160 /* The size of the auxillary header. */
161 char f_opthdr[2];
162
163 /* Flags. */
164 char f_flags[2];
165
166 /* The number of entries in the symbol table. */
167 char f_nsyms[4];
168 };
169
170 /* An internal representation of the XCOFF file header. */
171 struct internal_filehdr
172 {
173 unsigned short f_magic;
174 unsigned short f_nscns;
175 long f_timdat;
176 bfd_vma f_symptr;
177 long f_nsyms;
178 unsigned short f_opthdr;
179 unsigned short f_flags;
180 };
181
182 /* Symbol classes have their names in the debug section if this flag
183 is set. */
184 #define DBXMASK 0x80
185
186 /* The format of an XCOFF symbol-table entry. */
187 struct external_syment
188 {
189 union {
190 struct {
191 union {
192 /* The name of the symbol. There is an implicit null character
193 after the end of the array. */
194 char n_name[8];
195 struct {
196 /* If n_zeroes is zero, n_offset is the offset the name from
197 the start of the string table. */
198 char n_zeroes[4];
199 char n_offset[4];
200 } u;
201 } u;
202
203 /* The symbol's value. */
204 char n_value[4];
205 } xcoff32;
206 struct {
207 /* The symbol's value. */
208 char n_value[8];
209
210 /* The offset of the symbol from the start of the string table. */
211 char n_offset[4];
212 } xcoff64;
213 } u;
214
215 /* The number of the section to which this symbol belongs. */
216 char n_scnum[2];
217
218 /* The type of symbol. (It can be interpreted as an n_lang
219 and an n_cpu byte, but we don't care about that here.) */
220 char n_type[2];
221
222 /* The class of symbol (a C_* value). */
223 char n_sclass[1];
224
225 /* The number of auxillary symbols attached to this entry. */
226 char n_numaux[1];
227 };
228
229 /* Definitions required by collect2. */
230 #define C_EXT 2
231
232 #define F_SHROBJ 0x2000
233
234 #define N_UNDEF ((short) 0)
235 #define N_TMASK 060
236 #define N_BTSHFT 4
237
238 #define DT_NON 0
239 #define DT_FCN 2
240
241 /* -------------------------------------------------------------------------
242 Local code.
243 ------------------------------------------------------------------------- */
244
245 /* An internal representation of an XCOFF symbol-table entry,
246 which is associated with the API-defined SYMENT type. */
247 struct internal_syment
248 {
249 char n_name[9];
250 unsigned int n_zeroes;
251 bfd_vma n_offset;
252 bfd_vma n_value;
253 short n_scnum;
254 unsigned short n_flags;
255 unsigned short n_type;
256 unsigned char n_sclass;
257 unsigned char n_numaux;
258 };
259 typedef struct internal_syment SYMENT;
260
261 /* The internal representation of the API-defined LDFILE type. */
262 struct internal_ldfile
263 {
264 /* The file handle for the associated file, or -1 if it hasn't been
265 opened yet. */
266 int fd;
267
268 /* The start of the current XCOFF object, if one has been mapped
269 into memory. Null otherwise. */
270 char *object;
271
272 /* The offset of OBJECT from the start of the containing page. */
273 size_t page_offset;
274
275 /* The size of the file pointed to by OBJECT. Valid iff OFFSET
276 is nonnull. */
277 size_t object_size;
278
279 /* The offset of the next member in an archive after OBJECT,
280 or -1 if this isn't an archive. Valid iff OFFSET is nonnull. */
281 off_t next_member;
282
283 /* The parsed version of the XCOFF file header. */
284 struct internal_filehdr filehdr;
285 };
286 typedef struct internal_ldfile LDFILE;
287
288 /* The API allows the file header to be directly accessed via this macro. */
289 #define HEADER(FILE) ((FILE)->filehdr)
290
291 /* API-defined return codes. SUCCESS must be > 0 and FAILURE must be <= 0. */
292 #define SUCCESS 1
293 #define FAILURE 0
294
295 /* API-defined functions. */
296 extern LDFILE *ldopen (char *, LDFILE *);
297 extern char *ldgetname (LDFILE *, SYMENT *);
298 extern int ldtbread (LDFILE *, long, SYMENT *);
299 extern int ldclose (LDFILE *);
300
301 #endif