aboutsummaryrefslogtreecommitdiff
path: root/include/coff/rs6000.h
blob: 7b9d24334e157f10b0ba1e11b21da61c3fa5c26b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
/* IBM RS/6000 "XCOFF" file definitions for BFD.
   Copyright (C) 1990-2018 Free Software Foundation, Inc.
   Written by Mimi Phuong-Thao Vo of IBM
   and John Gilmore of Cygnus Support.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.  */

/********************** FILE HEADER **********************/

struct external_filehdr {
	char f_magic[2];	/* magic number			*/
	char f_nscns[2];	/* number of sections		*/
	char f_timdat[4];	/* time & date stamp		*/
	char f_symptr[4];	/* file pointer to symtab	*/
	char f_nsyms[4];	/* number of symtab entries	*/
	char f_opthdr[2];	/* sizeof(optional hdr)		*/
	char f_flags[2];	/* flags			*/
};

        /* IBM RS/6000 */
#define U802WRMAGIC     0730    /* writeable text segments **chh**      */
#define U802ROMAGIC     0735    /* readonly sharable text segments      */
#define U802TOCMAGIC    0737    /* readonly text segments and TOC       */

#define BADMAG(x)	\
	((x).f_magic != U802ROMAGIC && (x).f_magic != U802WRMAGIC && \
	 (x).f_magic != U802TOCMAGIC)

#define	FILHDR	struct external_filehdr
#define	FILHSZ	20


/********************** AOUT "OPTIONAL HEADER" **********************/


typedef struct
{
  unsigned char	magic[2];	/* type of file			*/
  unsigned char	vstamp[2];	/* version stamp		*/
  unsigned char	tsize[4];	/* text size in bytes, padded to FW bdry */
  unsigned char	dsize[4];	/* initialized data "  "	*/
  unsigned char	bsize[4];	/* uninitialized data "   "	*/
  unsigned char	entry[4];	/* entry pt.			*/
  unsigned char	text_start[4];	/* base of text used for this file */
  unsigned char	data_start[4];	/* base of data used for this file */
  unsigned char	o_toc[4];	/* address of TOC */
  unsigned char	o_snentry[2];	/* section number of entry point */
  unsigned char	o_sntext[2];	/* section number of .text section */
  unsigned char	o_sndata[2];	/* section number of .data section */
  unsigned char	o_sntoc[2];	/* section number of TOC */
  unsigned char	o_snloader[2];	/* section number of .loader section */
  unsigned char	o_snbss[2];	/* section number of .bss section */
  unsigned char	o_algntext[2];	/* .text alignment */
  unsigned char	o_algndata[2];	/* .data alignment */
  unsigned char	o_modtype[2];	/* module type (??) */
  unsigned char o_cputype[2];	/* cpu type */
  unsigned char	o_maxstack[4];	/* max stack size (??) */
  unsigned char o_maxdata[4];	/* max data size (??) */
  unsigned char	o_resv2[12];	/* reserved */
}
AOUTHDR;

#define AOUTSZ 72
#define SMALL_AOUTSZ (28)
#define AOUTHDRSZ 72

/********************** SECTION HEADER **********************/


struct external_scnhdr {
	char		s_name[8];	/* section name			*/
	char		s_paddr[4];	/* physical address, aliased s_nlib */
	char		s_vaddr[4];	/* virtual address		*/
	char		s_size[4];	/* section size			*/
	char		s_scnptr[4];	/* file ptr to raw data for section */
	char		s_relptr[4];	/* file ptr to relocation	*/
	char		s_lnnoptr[4];	/* file ptr to line numbers	*/
	char		s_nreloc[2];	/* number of relocation entries	*/
	char		s_nlnno[2];	/* number of line number entries*/
	char		s_flags[4];	/* flags			*/
};

#define	SCNHDR	struct external_scnhdr
#define	SCNHSZ	40

/********************** LINE NUMBERS **********************/

/* 1 line number entry for every "breakpointable" source line in a section.
 * Line numbers are grouped on a per function basis; first entry in a function
 * grouping will have l_lnno = 0 and in place of physical address will be the
 * symbol table index of the function name.
 */
struct external_lineno {
	union {
		char l_symndx[4];	/* function name symbol index, iff l_lnno == 0*/
		char l_paddr[4];	/* (physical) address of line number	*/
	} l_addr;
	char l_lnno[2];	/* line number		*/
};


#define	LINENO	struct external_lineno
#define	LINESZ	6


/********************** SYMBOLS **********************/

#define E_SYMNMLEN	8	/* # characters in a symbol name	*/
#define E_FILNMLEN	14	/* # characters in a file name		*/
#define E_DIMNUM	4	/* # array dimensions in auxiliary entry */

struct external_syment 
{
  union {
    char e_name[E_SYMNMLEN];
    struct {
      char e_zeroes[4];
      char e_offset[4];
    } e;
  } e;
  char e_value[4];
  char e_scnum[2];
  char e_type[2];
  char e_sclass[1];
  char e_numaux[1];
};



#define N_BTMASK	(017)
#define N_TMASK		(060)
#define N_BTSHFT	(4)
#define N_TSHIFT	(2)
  

union external_auxent {
	struct {
		char x_tagndx[4];	/* str, un, or enum tag indx */
		union {
			struct {
			    char  x_lnno[2]; /* declaration line number */
			    char  x_size[2]; /* str/union/array size */
			} x_lnsz;
			char x_fsize[4];	/* size of function */
		} x_misc;
		union {
			struct {		/* if ISFCN, tag, or .bb */
			    char x_lnnoptr[4];	/* ptr to fcn line # */
			    char x_endndx[4];	/* entry ndx past block end */
			} x_fcn;
			struct {		/* if ISARY, up to 4 dimen. */
			    char x_dimen[E_DIMNUM][2];
			} x_ary;
		} x_fcnary;
		char x_tvndx[2];		/* tv index */
	} x_sym;

        struct {
                union {
                        char x_fname[E_FILNMLEN];
                        struct {
                                char x_zeroes[4];
                                char x_offset[4];
                        } x_n;
                } x_n;
                char x_ftype[1];
        } x_file;

	struct {
		char x_scnlen[4];			/* section length */
		char x_nreloc[2];	/* # relocation entries */
		char x_nlinno[2];	/* # line numbers */
	} x_scn;

        struct {
		char x_tvfill[4];	/* tv fill value */
		char x_tvlen[2];	/* length of .tv */
		char x_tvran[2][2];	/* tv range */
	} x_tv;		/* info about .tv section (in auxent of symbol .tv)) */

	struct {
		unsigned char x_scnlen[4];
		unsigned char x_parmhash[4];
		unsigned char x_snhash[2];
		unsigned char x_smtyp[1];
		unsigned char x_smclas[1];
		unsigned char x_stab[4];
		unsigned char x_snstab[2];
	} x_csect;

};

#define	SYMENT	struct external_syment
#define	SYMESZ	18
#define	AUXENT	union external_auxent
#define	AUXESZ	18
#define DBXMASK 0x80		/* for dbx storage mask */
#define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK)



/********************** RELOCATION DIRECTIVES **********************/


struct external_reloc {
  char r_vaddr[4];
  char r_symndx[4];
  char r_size[1];
  char r_type[1];
};


#define RELOC struct external_reloc
#define RELSZ 10

#define DEFAULT_DATA_SECTION_ALIGNMENT 4
#define DEFAULT_BSS_SECTION_ALIGNMENT 4
#define DEFAULT_TEXT_SECTION_ALIGNMENT 4
/* For new sections we havn't heard of before */
#define DEFAULT_SECTION_ALIGNMENT 4

/* The ldhdr structure.  This appears at the start of the .loader
   section.  */

struct external_ldhdr
{
  bfd_byte l_version[4];
  bfd_byte l_nsyms[4];
  bfd_byte l_nreloc[4];
  bfd_byte l_istlen[4];
  bfd_byte l_nimpid[4];
  bfd_byte l_impoff[4];
  bfd_byte l_stlen[4];
  bfd_byte l_stoff[4];
};

#define LDHDRSZ (8 * 4)

struct external_ldsym
{
  union
    {
      bfd_byte _l_name[E_SYMNMLEN];
      struct
	{
	  bfd_byte _l_zeroes[4];
	  bfd_byte _l_offset[4];
	} _l_l;
    } _l;
  bfd_byte l_value[4];
  bfd_byte l_scnum[2];
  bfd_byte l_smtype[1];
  bfd_byte l_smclas[1];
  bfd_byte l_ifile[4];
  bfd_byte l_parm[4];
};

#define LDSYMSZ (8 + 3 * 4 + 2 + 2)

struct external_ldrel
{
  bfd_byte l_vaddr[4];
  bfd_byte l_symndx[4];
  bfd_byte l_rtype[2];
  bfd_byte l_rsecnm[2];
};

#define LDRELSZ (2 * 4 + 2 * 2)

struct external_exceptab
{
  union {
    bfd_byte e_symndx[4];
    bfd_byte e_paddr[4];
  } e_addr;
  bfd_byte e_lang[1];
  bfd_byte e_reason[1];
};

#define EXCEPTSZ (4 + 2)

/******************** Core files *************************/

struct external_core_dumpx
{
  unsigned char c_signo[1];
  unsigned char c_flag[1];
  unsigned char c_entries[2];

  unsigned char c_version[4];

  unsigned char c_fdsinfox[8];
  unsigned char c_loader[8];
  unsigned char c_lsize[8];

  unsigned char c_n_thr[4];
  unsigned char c_reserved0[4];
  unsigned char c_thr[8];

  unsigned char c_segs[8];
  unsigned char c_segregion[8];

  unsigned char c_stack[8];
  unsigned char c_stackorg[8];
  unsigned char c_size[8];

  unsigned char c_data[8];
  unsigned char c_dataorg[8];
  unsigned char c_datasize[8];
  unsigned char c_sdorg[8];
  unsigned char c_sdsize[8];

  unsigned char c_vmmregions[8];
  unsigned char c_vmm[8];

  unsigned char c_impl[4];
  unsigned char c_pad[4];
  unsigned char c_cprs[8];
  unsigned char c_reserved[7 * 8];

  /* Followed by:
     - context of the faulting thread.
     - user structure.  */
};


/* Core file verion.  */
#define CORE_DUMPX_VERSION 0x0feeddb1
#define CORE_DUMPXX_VERSION 0x0feeddb2

struct external_ld_info32
{
  unsigned char ldinfo_next[4];
  unsigned char core_offset[4];
  unsigned char ldinfo_textorg[4];
  unsigned char ldinfo_textsize[4];
  unsigned char ldinfo_dataorg[4];
  unsigned char ldinfo_datasize[4];
  unsigned char ldinfo_filename[2];
};