1 /* AIX cross support for collect2.
2 Copyright (C) 2009-2015 Free Software Foundation, Inc.
4 This file is part of GCC.
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
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
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/>. */
20 #ifndef GCC_COLLECT2_AIX_H
21 #define GCC_COLLECT2_AIX_H
22 /* collect2-aix.c requires mmap support. It should otherwise be
24 #if defined(CROSS_DIRECTORY_STRUCTURE) \
25 && defined(TARGET_AIX_VERSION) \
28 #define CROSS_AIX_SUPPORT 1
30 /* -------------------------------------------------------------------------
31 Definitions adapted from bfd. (Fairly heavily adapted in some cases.)
32 ------------------------------------------------------------------------- */
34 /* Compatibility types for bfd. */
35 typedef unsigned HOST_WIDE_INT bfd_vma
;
37 /* The size of an archive's fl_magic field. */
38 #define FL_MAGIC_SIZE 8
40 /* The expected contents of fl_magic for big archives. */
41 #define FL_MAGIC_BIG_AR "<bigaf>\012"
43 /* The size of each offset string in the header of a big archive. */
44 #define AR_BIG_OFFSET_SIZE 20
46 /* The format of the file header in a "big" XCOFF archive. */
47 struct external_big_ar_filehdr
50 char fl_magic
[FL_MAGIC_SIZE
];
52 /* Offset of the member table (decimal ASCII string). */
53 char fl_memoff
[AR_BIG_OFFSET_SIZE
];
55 /* Offset of the global symbol table for 32-bit objects (decimal ASCII
57 char fl_symoff
[AR_BIG_OFFSET_SIZE
];
59 /* Offset of the global symbol table for 64-bit objects (decimal ASCII
61 char fl_symoff64
[AR_BIG_OFFSET_SIZE
];
63 /* Offset of the first member in the archive (decimal ASCII string). */
64 char fl_firstmemoff
[AR_BIG_OFFSET_SIZE
];
66 /* Offset of the last member in the archive (decimal ASCII string). */
67 char fl_lastmemoff
[AR_BIG_OFFSET_SIZE
];
69 /* Offset of the first member on the free list (decimal ASCII
71 char fl_freeoff
[AR_BIG_OFFSET_SIZE
];
74 /* Each archive name is followed by this many bytes of magic string. */
75 #define SXCOFFARFMAG 2
77 /* The format of a member header in a "big" XCOFF archive. */
78 struct external_big_ar_member
80 /* File size not including the header (decimal ASCII string). */
81 char ar_size
[AR_BIG_OFFSET_SIZE
];
83 /* File offset of next archive member (decimal ASCII string). */
84 char ar_nextoff
[AR_BIG_OFFSET_SIZE
];
86 /* File offset of previous archive member (decimal ASCII string). */
87 char ar_prevoff
[AR_BIG_OFFSET_SIZE
];
89 /* File mtime (decimal ASCII string). */
92 /* File UID (decimal ASCII string). */
95 /* File GID (decimal ASCII string). */
98 /* File mode (octal ASCII string). */
101 /* Length of file name (decimal ASCII string). */
104 /* This structure is followed by the file name. The length of the
105 name is given in the namlen field. If the length of the name is
106 odd, the name is followed by a null byte. The name and optional
107 null byte are followed by XCOFFARFMAG, which is not included in
108 namlen. The contents of the archive member follow; the number of
109 bytes is given in the size field. */
112 /* The known values of f_magic in an XCOFF file header. */
113 #define U802WRMAGIC 0730 /* Writeable text segments. */
114 #define U802ROMAGIC 0735 /* Readonly sharable text segments. */
115 #define U802TOCMAGIC 0737 /* Readonly text segments and TOC. */
116 #define U803XTOCMAGIC 0757 /* Aix 4.3 64-bit XCOFF. */
117 #define U64_TOCMAGIC 0767 /* AIX 5+ 64-bit XCOFF. */
119 /* The number of bytes in an XCOFF file's f_magic field. */
120 #define F_MAGIC_SIZE 2
122 /* The format of a 32-bit XCOFF file header. */
123 struct external_filehdr_32
125 /* The magic number. */
126 char f_magic
[F_MAGIC_SIZE
];
128 /* The number of sections. */
131 /* Time & date stamp. */
134 /* The offset of the symbol table from the start of the file. */
137 /* The number of entries in the symbol table. */
140 /* The size of the auxiliary header. */
147 /* The format of a 64-bit XCOFF file header. */
148 struct external_filehdr_64
150 /* The magic number. */
151 char f_magic
[F_MAGIC_SIZE
];
153 /* The number of sections. */
156 /* Time & date stamp. */
159 /* The offset of the symbol table from the start of the file. */
162 /* The size of the auxiliary header. */
168 /* The number of entries in the symbol table. */
172 /* An internal representation of the XCOFF file header. */
173 struct internal_filehdr
175 unsigned short f_magic
;
176 unsigned short f_nscns
;
180 unsigned short f_opthdr
;
181 unsigned short f_flags
;
184 /* Symbol classes have their names in the debug section if this flag
188 /* The format of an XCOFF symbol-table entry. */
189 struct external_syment
194 /* The name of the symbol. There is an implicit null character
195 after the end of the array. */
198 /* If n_zeroes is zero, n_offset is the offset the name from
199 the start of the string table. */
205 /* The symbol's value. */
209 /* The symbol's value. */
212 /* The offset of the symbol from the start of the string table. */
217 /* The number of the section to which this symbol belongs. */
220 /* The type of symbol. (It can be interpreted as an n_lang
221 and an n_cpu byte, but we don't care about that here.) */
224 /* The class of symbol (a C_* value). */
227 /* The number of auxiliary symbols attached to this entry. */
231 /* Definitions required by collect2. */
234 #define F_SHROBJ 0x2000
235 #define F_LOADONLY 0x4000
237 #define N_UNDEF ((short) 0)
244 /* -------------------------------------------------------------------------
246 ------------------------------------------------------------------------- */
248 /* An internal representation of an XCOFF symbol-table entry,
249 which is associated with the API-defined SYMENT type. */
250 struct internal_syment
253 unsigned int n_zeroes
;
257 unsigned short n_flags
;
258 unsigned short n_type
;
259 unsigned char n_sclass
;
260 unsigned char n_numaux
;
262 typedef struct internal_syment SYMENT
;
264 /* The internal representation of the API-defined LDFILE type. */
265 struct internal_ldfile
267 /* The file handle for the associated file, or -1 if it hasn't been
271 /* The start of the current XCOFF object, if one has been mapped
272 into memory. Null otherwise. */
275 /* The offset of OBJECT from the start of the containing page. */
278 /* The size of the file pointed to by OBJECT. Valid iff OFFSET
282 /* The offset of the next member in an archive after OBJECT,
283 or -1 if this isn't an archive. Valid iff OFFSET is nonnull. */
286 /* The parsed version of the XCOFF file header. */
287 struct internal_filehdr filehdr
;
289 typedef struct internal_ldfile LDFILE
;
291 /* The API allows the file header to be directly accessed via this macro. */
292 #define HEADER(FILE) ((FILE)->filehdr)
294 /* API-defined return codes. SUCCESS must be > 0 and FAILURE must be <= 0. */
298 /* API-defined functions. */
299 extern LDFILE
*ldopen (char *, LDFILE
*);
300 extern char *ldgetname (LDFILE
*, SYMENT
*);
301 extern int ldtbread (LDFILE
*, long, SYMENT
*);
302 extern int ldclose (LDFILE
*);
306 #endif /* GCC_COLLECT2_AIX_H */