aboutsummaryrefslogtreecommitdiff
path: root/include/coff/ti.h
blob: d54b2ed191855fa226bf28d1ecf4d151eee8c278 (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
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
/* COFF information for TI COFF support.  Definitions in this file should be
   customized in a target-specific file, and then this file included (see
   tic54x.h for an example).
   
   Copyright 2000, 2001, 2002, 2003, 2005, 2008, 2009, 2010
   Free Software Foundation, Inc.

   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.  */

#ifndef COFF_TI_H
#define COFF_TI_H

/* Note "coff/external.h is not used because TI adds extra fields to the structures.  */

/********************** 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			*/
    char f_target_id[2];    /* magic no. (TI COFF-specific) */
  };

/* COFF0 has magic number in f_magic, and omits f_target_id from the file
   header; for later versions, f_magic is 0xC1 for COFF1 and 0xC2 for COFF2
   and the target-specific magic number is found in f_target_id */ 

#define TICOFF0MAGIC    TI_TARGET_ID
#define TICOFF1MAGIC    0x00C1
#define TICOFF2MAGIC    0x00C2
#define TICOFF_AOUT_MAGIC    0x0108 /* magic number in optional header */
#define TICOFF          1 /* customize coffcode.h */

/* The target_id field changes depending on the particular CPU target */
/* for COFF0, the target id appeared in f_magic, where COFFX magic is now */
#ifndef TI_TARGET_ID
#error "TI_TARGET_ID needs to be defined for your CPU"
#endif

/* Which bfd_arch to use... */
#ifndef TICOFF_TARGET_ARCH
#error "TICOFF_TARGET_ARCH needs to be defined for your CPU"
#endif

#ifndef TICOFF_TARGET_MACHINE_GET
#define TICOFF_TARGET_MACHINE_GET(FLAGS) 0
#endif

#ifndef TICOFF_TARGET_MACHINE_SET
#define TICOFF_TARGET_MACHINE_SET(FLAGSP, MACHINE)
#endif

/* Default to COFF2 for file output */
#ifndef TICOFF_DEFAULT_MAGIC
#define TICOFF_DEFAULT_MAGIC TICOFF2MAGIC
#endif

/* This value is made available in the rare case where a bfd is unavailable */
#ifndef OCTETS_PER_BYTE_POWER
#error "OCTETS_PER_BYTE_POWER not defined for this CPU"
#else
#define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER)
#endif

/* default alignment is on a byte (not octet!) boundary */
#ifndef COFF_DEFAULT_SECTION_ALIGNMENT_POWER
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 0
#endif

/* TI COFF encodes the section alignment in the section header flags */
#define COFF_ALIGN_IN_SECTION_HEADER 1
#define COFF_ALIGN_IN_S_FLAGS 1
/* requires a power-of-two argument */
#define COFF_ENCODE_ALIGNMENT(S,X) ((S).s_flags |= (((unsigned)(X)&0xF)<<8))
/* result is a power of two */
#define COFF_DECODE_ALIGNMENT(X) (((X)>>8)&0xF)

#define COFF0_P(ABFD) (bfd_coff_filhsz(ABFD) == FILHSZ_V0)
#define COFF2_P(ABFD) (bfd_coff_scnhsz(ABFD) != SCNHSZ_V01)

#define COFF0_BADMAG(x) ((x).f_magic != TICOFF0MAGIC)
#define COFF1_BADMAG(x) ((x).f_magic != TICOFF1MAGIC || (x).f_target_id != TI_TARGET_ID)
#define COFF2_BADMAG(x) ((x).f_magic != TICOFF2MAGIC || (x).f_target_id != TI_TARGET_ID)

/* we need to read/write an extra field in the coff file header */
#ifndef COFF_ADJUST_FILEHDR_IN_POST
#define COFF_ADJUST_FILEHDR_IN_POST(abfd, src, dst) \
  do									\
    {									\
      if (!COFF0_P (abfd))						\
	((struct internal_filehdr *)(dst))->f_target_id =		\
	  H_GET_16 (abfd, ((FILHDR *)(src))->f_target_id);		\
    }									\
  while (0)
#endif

#ifndef COFF_ADJUST_FILEHDR_OUT_POST
#define COFF_ADJUST_FILEHDR_OUT_POST(abfd, src, dst) \
  do									 \
    {									 \
      if (!COFF0_P (abfd))						 \
	H_PUT_16 (abfd, ((struct internal_filehdr *)(src))->f_target_id, \
		 ((FILHDR *)(dst))->f_target_id);			 \
    }									 \
  while (0)
#endif

#define	FILHDR	struct external_filehdr
#define	FILHSZ	22
#define FILHSZ_V0 20                /* COFF0 omits target_id field */

/* File header flags */
#define	F_RELFLG	(0x0001)
#define	F_EXEC		(0x0002)
#define	F_LNNO		(0x0004)
#define F_VERS          (0x0010) /* TMS320C4x code */
/* F_LSYMS needs to be redefined in your source file */
#define	F_LSYMS_TICOFF	(0x0010) /* normal COFF is 0x8 */

#define F_10            0x00    /* file built for TMS320C1x devices */
#define F_20            0x10    /* file built for TMS320C2x devices */
#define F_25            0x20    /* file built for TMS320C2x/C5x devices */
#define F_LENDIAN       0x0100  /* 16 bits/word, LSB first */
#define F_SYMMERGE      0x1000  /* duplicate symbols were removed */

/********************** OPTIONAL HEADER **********************/


typedef struct 
{
  char 	magic[2];		/* type of file (0x108) 		*/
  char	vstamp[2];		/* version stamp			*/
  char	tsize[4];		/* text size in bytes, padded to FW bdry*/
  char	dsize[4];		/* initialized data "  "		*/
  char	bsize[4];		/* uninitialized data "   "		*/
  char	entry[4];		/* entry pt.				*/
  char 	text_start[4];		/* base of text used for this file */
  char 	data_start[4];		/* base of data used for this file */
}
AOUTHDR;


#define AOUTHDRSZ 28
#define AOUTSZ 28


/********************** SECTION HEADER **********************/
/* COFF0, COFF1 */
struct external_scnhdr_v01 {
	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 (in WORDS)      */
	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[2];	/* flags			*/
        char            s_reserved[1];  /* reserved                     */ 
        char            s_page[1];      /* section page number (LOAD)   */
};

/* COFF2 */
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 (in WORDS)      */
	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[4];	/* number of relocation entries	*/
	char		s_nlnno[4];	/* number of line number entries*/
	char		s_flags[4];	/* flags			*/
        char            s_reserved[2];  /* reserved                     */ 
        char            s_page[2];      /* section page number (LOAD)   */
};

/*
 * Special section flags
 */

/* TI COFF defines these flags; 
   STYP_CLINK: the section should be excluded from the final
   linker output if there are no references found to any symbol in the section
   STYP_BLOCK: the section should be blocked, i.e. if the section would cross
   a page boundary, it is started at a page boundary instead.
   TI COFF puts the section alignment power of two in the section flags
   e.g. 2**N is alignment, flags |= (N & 0xF) << 8
*/ 
#define STYP_CLINK      (0x4000)
#define STYP_BLOCK      (0x1000)
#define STYP_ALIGN      (0x0F00) /* TI COFF stores section alignment here */

#define	SCNHDR_V01 struct external_scnhdr_v01
#define SCNHDR struct external_scnhdr
#define	SCNHSZ_V01 40                  /* for v0 and v1 */
#define SCNHSZ 48

/* COFF2 changes the offsets and sizes of these fields 
   Assume we're dealing with the COFF2 scnhdr structure, and adjust
   accordingly.  Note: The GNU C versions of some of these macros
   are necessary in order to avoid compile time warnings triggered
   gcc's array bounds checking.  The PUT_SCNHDR_PAGE macro also has
   the advantage on not evaluating LOC twice.  */

#define GET_SCNHDR_NRELOC(ABFD, LOC) \
  (COFF2_P (ABFD) ? H_GET_32 (ABFD, LOC) : H_GET_16 (ABFD, LOC))
#define PUT_SCNHDR_NRELOC(ABFD, VAL, LOC) \
  (COFF2_P (ABFD) ? H_PUT_32 (ABFD, VAL, LOC) : H_PUT_16 (ABFD, VAL, LOC))
#ifdef __GNUC__
#define GET_SCNHDR_NLNNO(ABFD, LOC) \
  ({ \
    int nlnno;		\
    char * ptr = (LOC); \
    if (COFF2_P (ABFD)) \
      nlnno = H_GET_32 (ABFD, ptr); \
    else \
      nlnno = H_GET_16 (ABFD, ptr - 2); \
    nlnno; \
  })
#define PUT_SCNHDR_NLNNO(ABFD, VAL, LOC) \
  do \
    { \
      char * ptr = (LOC); \
      if (COFF2_P (ABFD)) \
	H_PUT_32 (ABFD, VAL, ptr); \
      else \
	H_PUT_16 (ABFD, VAL, ptr - 2); \
    } \
  while (0)
#define GET_SCNHDR_FLAGS(ABFD, LOC) \
  ({ \
    int flags; \
    char * ptr = (LOC); \
    if (COFF2_P (ABFD)) \
      flags = H_GET_32 (ABFD, ptr); \
    else \
      flags = H_GET_16 (ABFD, ptr - 4); \
    flags; \
  })
#define PUT_SCNHDR_FLAGS(ABFD, VAL, LOC) \
  do \
    { \
      char * ptr = (LOC); \
      if (COFF2_P (ABFD)) \
	H_PUT_32 (ABFD, VAL, ptr); \
      else \
	H_PUT_16 (ABFD, VAL, ptr - 4); \
    } \
  while (0)
#define GET_SCNHDR_PAGE(ABFD, LOC) \
  ({ \
    unsigned page; \
    char * ptr = (LOC); \
    if (COFF2_P (ABFD)) \
      page = H_GET_16 (ABFD, ptr); \
    else \
      page = (unsigned) H_GET_8 (ABFD, ptr - 7); \
    page; \
  })
/* On output, make sure that the "reserved" field is zero.  */
#define PUT_SCNHDR_PAGE(ABFD, VAL, LOC) \
  do \
    { \
      char * ptr = (LOC); \
      if (COFF2_P (ABFD)) \
	H_PUT_16 (ABFD, VAL, ptr); \
      else \
	{ \
	  H_PUT_8 (ABFD, VAL, ptr - 7); \
	  H_PUT_8 (ABFD, 0, ptr - 8); \
	} \
    } \
  while (0)
#else
#define GET_SCNHDR_NLNNO(ABFD, LOC) \
  (COFF2_P (ABFD) ? H_GET_32 (ABFD, LOC) : H_GET_16 (ABFD, (LOC) - 2))
#define PUT_SCNHDR_NLNNO(ABFD, VAL, LOC) \
  (COFF2_P (ABFD) ? H_PUT_32 (ABFD, VAL, LOC) : H_PUT_16 (ABFD, VAL, (LOC) - 2))
#define GET_SCNHDR_FLAGS(ABFD, LOC) \
  (COFF2_P (ABFD) ? H_GET_32 (ABFD, LOC) : H_GET_16 (ABFD, (LOC) - 4))
#define PUT_SCNHDR_FLAGS(ABFD, VAL, LOC) \
  (COFF2_P (ABFD) ? H_PUT_32 (ABFD, VAL, LOC) : H_PUT_16 (ABFD, VAL, (LOC) - 4))
#define GET_SCNHDR_PAGE(ABFD, LOC) \
  (COFF2_P (ABFD) ? H_GET_16 (ABFD, LOC) : (unsigned) H_GET_8 (ABFD, (LOC) - 7))
/* On output, make sure that the "reserved" field is zero.  */
#define PUT_SCNHDR_PAGE(ABFD, VAL, LOC) \
  (COFF2_P (ABFD) \
   ? H_PUT_16 (ABFD, VAL, LOC) \
   : H_PUT_8 (ABFD, VAL, (LOC) - 7), H_PUT_8 (ABFD, 0, (LOC) - 8))
#endif


/* TI COFF stores section size as number of bytes (address units, not octets),
   so adjust to be number of octets, which is what BFD expects */ 
#define GET_SCNHDR_SIZE(ABFD, SZP) \
  (H_GET_32 (ABFD, SZP) * bfd_octets_per_byte (ABFD))
#define PUT_SCNHDR_SIZE(ABFD, SZ, SZP) \
  H_PUT_32 (ABFD, (SZ) / bfd_octets_per_byte (ABFD), SZP)

#define COFF_ADJUST_SCNHDR_IN_POST(ABFD, EXT, INT) \
  do									\
    {									\
      ((struct internal_scnhdr *)(INT))->s_page =			\
	GET_SCNHDR_PAGE (ABFD, ((SCNHDR *)(EXT))->s_page);		\
    }									\
   while (0)

/* The entire scnhdr may not be assigned.
   Ensure that everything is initialized.  */
#define COFF_ADJUST_SCNHDR_OUT_PRE(ABFD, INT, EXT)	\
  do							\
    {							\
      memset((EXT), 0, sizeof (SCNHDR));		\
    }							\
  while (0)

/* The line number and reloc overflow checking in coff_swap_scnhdr_out in
   coffswap.h doesn't use PUT_X for s_nlnno and s_nreloc.
   Due to different sized v0/v1/v2 section headers, we have to re-write these
   fields.
 */
#define COFF_ADJUST_SCNHDR_OUT_POST(ABFD, INT, EXT) \
  do									   \
    {									   \
      PUT_SCNHDR_NLNNO (ABFD, ((struct internal_scnhdr *)(INT))->s_nlnno,  \
			((SCNHDR *)(EXT))->s_nlnno);			   \
      PUT_SCNHDR_NRELOC (ABFD, ((struct internal_scnhdr *)(INT))->s_nreloc,\
			 ((SCNHDR *)(EXT))->s_nreloc);			   \
      PUT_SCNHDR_FLAGS (ABFD, ((struct internal_scnhdr *)(INT))->s_flags,  \
			((SCNHDR *)(EXT))->s_flags);			   \
      PUT_SCNHDR_PAGE (ABFD, ((struct internal_scnhdr *)(INT))->s_page,    \
		       ((SCNHDR *)(EXT))->s_page);			   \
    }									   \
   while (0)

/*
 * names of "special" sections
 */
#define _TEXT	".text"
#define _DATA	".data"
#define _BSS	".bss"
#define _CINIT  ".cinit"            /* initialized C data */
#define _SCONST  ".const"           /* constants */
#define _SWITCH ".switch"           /* switch tables */
#define _STACK  ".stack"            /* C stack */
#define _SYSMEM ".sysmem"           /* used for malloc et al. syscalls */

/********************** 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 **********************/

/* NOTE: this is what a local label looks like in assembly source; what it
   looks like in COFF output is undefined */
#define TICOFF_LOCAL_LABEL_P(NAME) \
((NAME[0] == '$' && NAME[1] >= '0' && NAME[1] <= '9' && NAME[2] == '\0') \
 || NAME[strlen(NAME)-1] == '?')

#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;
  
  union {
	char x_fname[E_FILNMLEN];
	struct {
	  char x_zeroes[4];
	  char x_offset[4];
	} x_n;
  } 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)) */
  

};

#define	SYMENT	struct external_syment
#define	SYMESZ	18	
#define	AUXENT	union external_auxent
#define	AUXESZ	18

/* section lengths are in target bytes (not host bytes) */
#define GET_SCN_SCNLEN(ABFD, EXT) \
  (H_GET_32 (ABFD, (EXT)->x_scn.x_scnlen) * bfd_octets_per_byte (ABFD))
#define PUT_SCN_SCNLEN(ABFD, INT, EXT) \
  H_PUT_32 (ABFD, (INT) / bfd_octets_per_byte (ABFD), (EXT)->x_scn.x_scnlen)

/* lnsz size is in bits in COFF file, in bytes in BFD */
#define GET_LNSZ_SIZE(abfd, ext) \
 (H_GET_16 (abfd, ext->x_sym.x_misc.x_lnsz.x_size) / (in_class != C_FIELD ? 8 : 1))

#define PUT_LNSZ_SIZE(abfd, in, ext) \
  H_PUT_16 (abfd, ((in_class != C_FIELD) ? (in) * 8 : (in)), \
	   ext->x_sym.x_misc.x_lnsz.x_size)
 
/* TI COFF stores offsets for MOS and MOU in bits; BFD expects bytes 
   Also put the load page flag of the section into the symbol value if it's an
   address.  */
#ifndef NEEDS_PAGE
#define NEEDS_PAGE(X) 0
#define PAGE_MASK 0
#endif
#define COFF_ADJUST_SYM_IN_POST(ABFD, EXT, INT) \
  do									\
    {									\
      struct internal_syment *dst = (struct internal_syment *)(INT);	\
      if (dst->n_sclass == C_MOS || dst->n_sclass == C_MOU)		\
	dst->n_value /= 8;						\
      else if (NEEDS_PAGE (dst->n_sclass)) {                            \
        asection *scn = coff_section_from_bfd_index (abfd, dst->n_scnum); \
        dst->n_value |= (scn->lma & PAGE_MASK);                         \
      }									\
    }									\
   while (0)

#define COFF_ADJUST_SYM_OUT_POST(ABFD, INT, EXT) \
  do									\
    {									\
       struct internal_syment *src = (struct internal_syment *)(INT);	\
       SYMENT *dst = (SYMENT *)(EXT);					\
       if (src->n_sclass == C_MOU || src->n_sclass == C_MOS)		\
	 H_PUT_32 (abfd, src->n_value * 8, dst->e_value);		\
       else if (NEEDS_PAGE (src->n_sclass)) {                           \
         H_PUT_32 (abfd, src->n_value &= ~PAGE_MASK, dst->e_value);     \
       }								\
    }									\
   while (0)

/* Detect section-relative absolute symbols so they get flagged with a sym
   index of -1.
*/
#define SECTION_RELATIVE_ABSOLUTE_SYMBOL_P(RELOC, SECT) \
  ((*(RELOC)->sym_ptr_ptr)->section->output_section == (SECT) \
   && (RELOC)->howto->name[0] == 'A')

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

struct external_reloc_v0
{
  char r_vaddr[4];
  char r_symndx[2];
  char r_reserved[2];
  char r_type[2];
};

struct external_reloc
{
  char r_vaddr[4];
  char r_symndx[4];
  char r_reserved[2]; /* extended pmad byte for COFF2 */
  char r_type[2];
};

#define RELOC struct external_reloc
#define RELSZ_V0 10                 /* FIXME -- coffcode.h needs fixing */
#define RELSZ 12                    /* for COFF1/2 */

#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
  do memset (dst->r_reserved, 0, sizeof (dst->r_reserved)); while (0)

/* various relocation types.  */
#define R_ABS     0x0000            /* no relocation */
#define R_REL13   0x002A            /* 13-bit direct reference (???) */
#define R_PARTLS7 0x0028            /* 7 LSBs of an address */
#define R_PARTMS9 0x0029            /* 9MSBs of an address */
#define R_EXTWORD 0x002B            /* 23-bit direct reference */
#define R_EXTWORD16 0x002C          /* 16-bit direct reference to 23-bit addr*/
#define R_EXTWORDMS7 0x002D         /* upper 7 bits of 23-bit address */

#endif /* COFF_TI_H */