OpenCores
URL https://opencores.org/ocsvn/open8_urisc/open8_urisc/trunk

Subversion Repositories open8_urisc

[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [include/] [coff/] [rs6000.h] - Blame information for rev 21

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 17 khays
/* IBM RS/6000 "XCOFF" file definitions for BFD.
2
   Copyright (C) 1990, 1991, 2001, 2010 Free Software Foundation, Inc.
3
   Written by Mimi Phuong-Thao Vo of IBM
4
   and John Gilmore of Cygnus Support.
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
8
   the Free Software Foundation; either version 3 of the License, or
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
18
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19
   MA 02110-1301, USA.  */
20
 
21
/********************** FILE HEADER **********************/
22
 
23
struct external_filehdr {
24
        char f_magic[2];        /* magic number                 */
25
        char f_nscns[2];        /* number of sections           */
26
        char f_timdat[4];       /* time & date stamp            */
27
        char f_symptr[4];       /* file pointer to symtab       */
28
        char f_nsyms[4];        /* number of symtab entries     */
29
        char f_opthdr[2];       /* sizeof(optional hdr)         */
30
        char f_flags[2];        /* flags                        */
31
};
32
 
33
        /* IBM RS/6000 */
34
#define U802WRMAGIC     0730    /* writeable text segments **chh**      */
35
#define U802ROMAGIC     0735    /* readonly sharable text segments      */
36
#define U802TOCMAGIC    0737    /* readonly text segments and TOC       */
37
 
38
#define BADMAG(x)       \
39
        ((x).f_magic != U802ROMAGIC && (x).f_magic != U802WRMAGIC && \
40
         (x).f_magic != U802TOCMAGIC)
41
 
42
#define FILHDR  struct external_filehdr
43
#define FILHSZ  20
44
 
45
 
46
/********************** AOUT "OPTIONAL HEADER" **********************/
47
 
48
 
49
typedef struct
50
{
51
  unsigned char magic[2];       /* type of file                 */
52
  unsigned char vstamp[2];      /* version stamp                */
53
  unsigned char tsize[4];       /* text size in bytes, padded to FW bdry */
54
  unsigned char dsize[4];       /* initialized data "  "        */
55
  unsigned char bsize[4];       /* uninitialized data "   "     */
56
  unsigned char entry[4];       /* entry pt.                    */
57
  unsigned char text_start[4];  /* base of text used for this file */
58
  unsigned char data_start[4];  /* base of data used for this file */
59
  unsigned char o_toc[4];       /* address of TOC */
60
  unsigned char o_snentry[2];   /* section number of entry point */
61
  unsigned char o_sntext[2];    /* section number of .text section */
62
  unsigned char o_sndata[2];    /* section number of .data section */
63
  unsigned char o_sntoc[2];     /* section number of TOC */
64
  unsigned char o_snloader[2];  /* section number of .loader section */
65
  unsigned char o_snbss[2];     /* section number of .bss section */
66
  unsigned char o_algntext[2];  /* .text alignment */
67
  unsigned char o_algndata[2];  /* .data alignment */
68
  unsigned char o_modtype[2];   /* module type (??) */
69
  unsigned char o_cputype[2];   /* cpu type */
70
  unsigned char o_maxstack[4];  /* max stack size (??) */
71
  unsigned char o_maxdata[4];   /* max data size (??) */
72
  unsigned char o_resv2[12];    /* reserved */
73
}
74
AOUTHDR;
75
 
76
#define AOUTSZ 72
77
#define SMALL_AOUTSZ (28)
78
#define AOUTHDRSZ 72
79
 
80
/********************** SECTION HEADER **********************/
81
 
82
 
83
struct external_scnhdr {
84
        char            s_name[8];      /* section name                 */
85
        char            s_paddr[4];     /* physical address, aliased s_nlib */
86
        char            s_vaddr[4];     /* virtual address              */
87
        char            s_size[4];      /* section size                 */
88
        char            s_scnptr[4];    /* file ptr to raw data for section */
89
        char            s_relptr[4];    /* file ptr to relocation       */
90
        char            s_lnnoptr[4];   /* file ptr to line numbers     */
91
        char            s_nreloc[2];    /* number of relocation entries */
92
        char            s_nlnno[2];     /* number of line number entries*/
93
        char            s_flags[4];     /* flags                        */
94
};
95
 
96
#define SCNHDR  struct external_scnhdr
97
#define SCNHSZ  40
98
 
99
/********************** LINE NUMBERS **********************/
100
 
101
/* 1 line number entry for every "breakpointable" source line in a section.
102
 * Line numbers are grouped on a per function basis; first entry in a function
103
 * grouping will have l_lnno = 0 and in place of physical address will be the
104
 * symbol table index of the function name.
105
 */
106
struct external_lineno {
107
        union {
108
                char l_symndx[4];       /* function name symbol index, iff l_lnno == 0*/
109
                char l_paddr[4];        /* (physical) address of line number    */
110
        } l_addr;
111
        char l_lnno[2]; /* line number          */
112
};
113
 
114
 
115
#define LINENO  struct external_lineno
116
#define LINESZ  6
117
 
118
 
119
/********************** SYMBOLS **********************/
120
 
121
#define E_SYMNMLEN      8       /* # characters in a symbol name        */
122
#define E_FILNMLEN      14      /* # characters in a file name          */
123
#define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
124
 
125
struct external_syment
126
{
127
  union {
128
    char e_name[E_SYMNMLEN];
129
    struct {
130
      char e_zeroes[4];
131
      char e_offset[4];
132
    } e;
133
  } e;
134
  char e_value[4];
135
  char e_scnum[2];
136
  char e_type[2];
137
  char e_sclass[1];
138
  char e_numaux[1];
139
};
140
 
141
 
142
 
143
#define N_BTMASK        (017)
144
#define N_TMASK         (060)
145
#define N_BTSHFT        (4)
146
#define N_TSHIFT        (2)
147
 
148
 
149
union external_auxent {
150
        struct {
151
                char x_tagndx[4];       /* str, un, or enum tag indx */
152
                union {
153
                        struct {
154
                            char  x_lnno[2]; /* declaration line number */
155
                            char  x_size[2]; /* str/union/array size */
156
                        } x_lnsz;
157
                        char x_fsize[4];        /* size of function */
158
                } x_misc;
159
                union {
160
                        struct {                /* if ISFCN, tag, or .bb */
161
                            char x_lnnoptr[4];  /* ptr to fcn line # */
162
                            char x_endndx[4];   /* entry ndx past block end */
163
                        } x_fcn;
164
                        struct {                /* if ISARY, up to 4 dimen. */
165
                            char x_dimen[E_DIMNUM][2];
166
                        } x_ary;
167
                } x_fcnary;
168
                char x_tvndx[2];                /* tv index */
169
        } x_sym;
170
 
171
        struct {
172
                union {
173
                        char x_fname[E_FILNMLEN];
174
                        struct {
175
                                char x_zeroes[4];
176
                                char x_offset[4];
177
                        } x_n;
178
                } x_n;
179
                char x_ftype[1];
180
        } x_file;
181
 
182
        struct {
183
                char x_scnlen[4];                       /* section length */
184
                char x_nreloc[2];       /* # relocation entries */
185
                char x_nlinno[2];       /* # line numbers */
186
        } x_scn;
187
 
188
        struct {
189
                char x_tvfill[4];       /* tv fill value */
190
                char x_tvlen[2];        /* length of .tv */
191
                char x_tvran[2][2];     /* tv range */
192
        } x_tv;         /* info about .tv section (in auxent of symbol .tv)) */
193
 
194
        struct {
195
                unsigned char x_scnlen[4];
196
                unsigned char x_parmhash[4];
197
                unsigned char x_snhash[2];
198
                unsigned char x_smtyp[1];
199
                unsigned char x_smclas[1];
200
                unsigned char x_stab[4];
201
                unsigned char x_snstab[2];
202
        } x_csect;
203
 
204
};
205
 
206
#define SYMENT  struct external_syment
207
#define SYMESZ  18      
208
#define AUXENT  union external_auxent
209
#define AUXESZ  18
210
#define DBXMASK 0x80            /* for dbx storage mask */
211
#define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK)
212
 
213
 
214
 
215
/********************** RELOCATION DIRECTIVES **********************/
216
 
217
 
218
struct external_reloc {
219
  char r_vaddr[4];
220
  char r_symndx[4];
221
  char r_size[1];
222
  char r_type[1];
223
};
224
 
225
 
226
#define RELOC struct external_reloc
227
#define RELSZ 10
228
 
229
#define DEFAULT_DATA_SECTION_ALIGNMENT 4
230
#define DEFAULT_BSS_SECTION_ALIGNMENT 4
231
#define DEFAULT_TEXT_SECTION_ALIGNMENT 4
232
/* For new sections we havn't heard of before */
233
#define DEFAULT_SECTION_ALIGNMENT 4
234
 
235
/* The ldhdr structure.  This appears at the start of the .loader
236
   section.  */
237
 
238
struct external_ldhdr
239
{
240
  bfd_byte l_version[4];
241
  bfd_byte l_nsyms[4];
242
  bfd_byte l_nreloc[4];
243
  bfd_byte l_istlen[4];
244
  bfd_byte l_nimpid[4];
245
  bfd_byte l_impoff[4];
246
  bfd_byte l_stlen[4];
247
  bfd_byte l_stoff[4];
248
};
249
 
250
#define LDHDRSZ (8 * 4)
251
 
252
struct external_ldsym
253
{
254
  union
255
    {
256
      bfd_byte _l_name[E_SYMNMLEN];
257
      struct
258
        {
259
          bfd_byte _l_zeroes[4];
260
          bfd_byte _l_offset[4];
261
        } _l_l;
262
    } _l;
263
  bfd_byte l_value[4];
264
  bfd_byte l_scnum[2];
265
  bfd_byte l_smtype[1];
266
  bfd_byte l_smclas[1];
267
  bfd_byte l_ifile[4];
268
  bfd_byte l_parm[4];
269
};
270
 
271
#define LDSYMSZ (8 + 3 * 4 + 2 + 2)
272
 
273
struct external_ldrel
274
{
275
  bfd_byte l_vaddr[4];
276
  bfd_byte l_symndx[4];
277
  bfd_byte l_rtype[2];
278
  bfd_byte l_rsecnm[2];
279
};
280
 
281
#define LDRELSZ (2 * 4 + 2 * 2)
282
 
283
struct external_exceptab
284
{
285
  union {
286
    bfd_byte e_symndx[4];
287
    bfd_byte e_paddr[4];
288
  } e_addr;
289
  bfd_byte e_lang[1];
290
  bfd_byte e_reason[1];
291
};
292
 
293
#define EXCEPTSZ (4 + 2)

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.