include/coff/ti.h

   1 /* COFF information for TI COFF support.  Definitions in this file should be
   2    customized in a target-specific file, and then this file included (see
   3    tic54x.h for an example).
   4
   5    Copyright 2000, 2001, 2002, 2003, 2005, 2008, 2009, 2010
   6    Free Software Foundation, Inc.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21    MA 02110-1301, USA.  */
  22
  23 #ifndef COFF_TI_H
  24 #define COFF_TI_H
  25
  26 /* Note "coff/external.h is not used because TI adds extra fields to the structures.  */
  27
  28 /********************** FILE HEADER **********************/
  29
  30 struct external_filehdr
  31   {
  32     char f_magic[2];    /* magic number                 */
  33     char f_nscns[2];    /* number of sections           */
  34     char f_timdat[4];   /* time & date stamp            */
  35     char f_symptr[4];   /* file pointer to symtab       */
  36     char f_nsyms[4];    /* number of symtab entries     */
  37     char f_opthdr[2];   /* sizeof(optional hdr)         */
  38     char f_flags[2];    /* flags                        */
  39     char f_target_id[2];    /* magic no. (TI COFF-specific) */
  40   };
  41
  42 /* COFF0 has magic number in f_magic, and omits f_target_id from the file
  43    header; for later versions, f_magic is 0xC1 for COFF1 and 0xC2 for COFF2
  44    and the target-specific magic number is found in f_target_id */
  45
  46 #define TICOFF0MAGIC    TI_TARGET_ID
  47 #define TICOFF1MAGIC    0x00C1
  48 #define TICOFF2MAGIC    0x00C2
  49 #define TICOFF_AOUT_MAGIC    0x0108 /* magic number in optional header */
  50 #define TICOFF          1 /* customize coffcode.h */
  51
  52 /* The target_id field changes depending on the particular CPU target */
  53 /* for COFF0, the target id appeared in f_magic, where COFFX magic is now */
  54 #ifndef TI_TARGET_ID
  55 #error "TI_TARGET_ID needs to be defined for your CPU"
  56 #endif
  57
  58 /* Which bfd_arch to use... */
  59 #ifndef TICOFF_TARGET_ARCH
  60 #error "TICOFF_TARGET_ARCH needs to be defined for your CPU"
  61 #endif
  62
  63 #ifndef TICOFF_TARGET_MACHINE_GET
  64 #define TICOFF_TARGET_MACHINE_GET(FLAGS) 0
  65 #endif
  66
  67 #ifndef TICOFF_TARGET_MACHINE_SET
  68 #define TICOFF_TARGET_MACHINE_SET(FLAGSP, MACHINE)
  69 #endif
  70
  71 /* Default to COFF2 for file output */
  72 #ifndef TICOFF_DEFAULT_MAGIC
  73 #define TICOFF_DEFAULT_MAGIC TICOFF2MAGIC
  74 #endif
  75
  76 /* This value is made available in the rare case where a bfd is unavailable */
  77 #ifndef OCTETS_PER_BYTE_POWER
  78 #error "OCTETS_PER_BYTE_POWER not defined for this CPU"
  79 #else
  80 #define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER)
  81 #endif
  82
  83 /* default alignment is on a byte (not octet!) boundary */
  84 #ifndef COFF_DEFAULT_SECTION_ALIGNMENT_POWER
  85 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 0
  86 #endif
  87
  88 /* TI COFF encodes the section alignment in the section header flags */
  89 #define COFF_ALIGN_IN_SECTION_HEADER 1
  90 #define COFF_ALIGN_IN_S_FLAGS 1
  91 /* requires a power-of-two argument */
  92 #define COFF_ENCODE_ALIGNMENT(S,X) ((S).s_flags |= (((unsigned)(X)&0xF)<<8))
  93 /* result is a power of two */
  94 #define COFF_DECODE_ALIGNMENT(X) (((X)>>8)&0xF)
  95
  96 #define COFF0_P(ABFD) (bfd_coff_filhsz(ABFD) == FILHSZ_V0)
  97 #define COFF2_P(ABFD) (bfd_coff_scnhsz(ABFD) != SCNHSZ_V01)
  98
  99 #define COFF0_BADMAG(x) ((x).f_magic != TICOFF0MAGIC)
 100 #define COFF1_BADMAG(x) ((x).f_magic != TICOFF1MAGIC || (x).f_target_id != TI_TARGET_ID)
 101 #define COFF2_BADMAG(x) ((x).f_magic != TICOFF2MAGIC || (x).f_target_id != TI_TARGET_ID)
 102
 103 /* we need to read/write an extra field in the coff file header */
 104 #ifndef COFF_ADJUST_FILEHDR_IN_POST
 105 #define COFF_ADJUST_FILEHDR_IN_POST(abfd, src, dst) \
 106   do                                                                    \
 107     {                                                                   \
 108       if (!COFF0_P (abfd))                                              \
 109         ((struct internal_filehdr *)(dst))->f_target_id =               \
 110           H_GET_16 (abfd, ((FILHDR *)(src))->f_target_id);              \
 111     }                                                                   \
 112   while (0)
 113 #endif
 114
 115 #ifndef COFF_ADJUST_FILEHDR_OUT_POST
 116 #define COFF_ADJUST_FILEHDR_OUT_POST(abfd, src, dst) \
 117   do                                                                     \
 118     {                                                                    \
 119       if (!COFF0_P (abfd))                                               \
 120         H_PUT_16 (abfd, ((struct internal_filehdr *)(src))->f_target_id, \
 121                  ((FILHDR *)(dst))->f_target_id);                        \
 122     }                                                                    \
 123   while (0)
 124 #endif
 125
 126 #define FILHDR  struct external_filehdr
 127 #define FILHSZ  22
 128 #define FILHSZ_V0 20                /* COFF0 omits target_id field */
 129
 130 /* File header flags */
 131 #define F_RELFLG        (0x0001)
 132 #define F_EXEC          (0x0002)
 133 #define F_LNNO          (0x0004)
 134 #define F_VERS          (0x0010) /* TMS320C4x code */
 135 /* F_LSYMS needs to be redefined in your source file */
 136 #define F_LSYMS_TICOFF  (0x0010) /* normal COFF is 0x8 */
 137
 138 #define F_10            0x00    /* file built for TMS320C1x devices */
 139 #define F_20            0x10    /* file built for TMS320C2x devices */
 140 #define F_25            0x20    /* file built for TMS320C2x/C5x devices */
 141 #define F_LENDIAN       0x0100  /* 16 bits/word, LSB first */
 142 #define F_SYMMERGE      0x1000  /* duplicate symbols were removed */
 143
 144 /********************** OPTIONAL HEADER **********************/
 145
 146
 147 typedef struct
 148 {
 149   char  magic[2];               /* type of file (0x108)                 */
 150   char  vstamp[2];              /* version stamp                        */
 151   char  tsize[4];               /* text size in bytes, padded to FW bdry*/
 152   char  dsize[4];               /* initialized data "  "                */
 153   char  bsize[4];               /* uninitialized data "   "             */
 154   char  entry[4];               /* entry pt.                            */
 155   char  text_start[4];          /* base of text used for this file */
 156   char  data_start[4];          /* base of data used for this file */
 157 }
 158 AOUTHDR;
 159
 160
 161 #define AOUTHDRSZ 28
 162 #define AOUTSZ 28
 163
 164
 165 /********************** SECTION HEADER **********************/
 166 /* COFF0, COFF1 */
 167 struct external_scnhdr_v01 {
 168         char            s_name[8];      /* section name                 */
 169         char            s_paddr[4];     /* physical address, aliased s_nlib */
 170         char            s_vaddr[4];     /* virtual address              */
 171         char            s_size[4];      /* section size (in WORDS)      */
 172         char            s_scnptr[4];    /* file ptr to raw data for section */
 173         char            s_relptr[4];    /* file ptr to relocation       */
 174         char            s_lnnoptr[4];   /* file ptr to line numbers     */
 175         char            s_nreloc[2];    /* number of relocation entries */
 176         char            s_nlnno[2];     /* number of line number entries*/
 177         char            s_flags[2];     /* flags                        */
 178         char            s_reserved[1];  /* reserved                     */
 179         char            s_page[1];      /* section page number (LOAD)   */
 180 };
 181
 182 /* COFF2 */
 183 struct external_scnhdr {
 184         char            s_name[8];      /* section name                 */
 185         char            s_paddr[4];     /* physical address, aliased s_nlib */
 186         char            s_vaddr[4];     /* virtual address              */
 187         char            s_size[4];      /* section size (in WORDS)      */
 188         char            s_scnptr[4];    /* file ptr to raw data for section */
 189         char            s_relptr[4];    /* file ptr to relocation       */
 190         char            s_lnnoptr[4];   /* file ptr to line numbers     */
 191         char            s_nreloc[4];    /* number of relocation entries */
 192         char            s_nlnno[4];     /* number of line number entries*/
 193         char            s_flags[4];     /* flags                        */
 194         char            s_reserved[2];  /* reserved                     */
 195         char            s_page[2];      /* section page number (LOAD)   */
 196 };
 197
 198 /*
 199  * Special section flags
 200  */
 201
 202 /* TI COFF defines these flags;
 203    STYP_CLINK: the section should be excluded from the final
 204    linker output if there are no references found to any symbol in the section
 205    STYP_BLOCK: the section should be blocked, i.e. if the section would cross
 206    a page boundary, it is started at a page boundary instead.
 207    TI COFF puts the section alignment power of two in the section flags
 208    e.g. 2**N is alignment, flags |= (N & 0xF) << 8
 209 */
 210 #define STYP_CLINK      (0x4000)
 211 #define STYP_BLOCK      (0x1000)
 212 #define STYP_ALIGN      (0x0F00) /* TI COFF stores section alignment here */
 213
 214 #define SCNHDR_V01 struct external_scnhdr_v01
 215 #define SCNHDR struct external_scnhdr
 216 #define SCNHSZ_V01 40                  /* for v0 and v1 */
 217 #define SCNHSZ 48
 218
 219 /* COFF2 changes the offsets and sizes of these fields
 220    Assume we're dealing with the COFF2 scnhdr structure, and adjust
 221    accordingly.  Note: The GNU C versions of some of these macros
 222    are necessary in order to avoid compile time warnings triggered
 223    gcc's array bounds checking.  The PUT_SCNHDR_PAGE macro also has
 224    the advantage on not evaluating LOC twice.  */
 225
 226 #define GET_SCNHDR_NRELOC(ABFD, LOC) \
 227   (COFF2_P (ABFD) ? H_GET_32 (ABFD, LOC) : H_GET_16 (ABFD, LOC))
 228 #define PUT_SCNHDR_NRELOC(ABFD, VAL, LOC) \
 229   (COFF2_P (ABFD) ? H_PUT_32 (ABFD, VAL, LOC) : H_PUT_16 (ABFD, VAL, LOC))
 230 #ifdef __GNUC__
 231 #define GET_SCNHDR_NLNNO(ABFD, LOC) \
 232   ({ \
 233     int nlnno;          \
 234     char * ptr = (LOC); \
 235     if (COFF2_P (ABFD)) \
 236       nlnno = H_GET_32 (ABFD, ptr); \
 237     else \
 238       nlnno = H_GET_16 (ABFD, ptr - 2); \
 239     nlnno; \
 240   })
 241 #define PUT_SCNHDR_NLNNO(ABFD, VAL, LOC) \
 242   do \
 243     { \
 244       char * ptr = (LOC); \
 245       if (COFF2_P (ABFD)) \
 246         H_PUT_32 (ABFD, VAL, ptr); \
 247       else \
 248         H_PUT_16 (ABFD, VAL, ptr - 2); \
 249     } \
 250   while (0)
 251 #define GET_SCNHDR_FLAGS(ABFD, LOC) \
 252   ({ \
 253     int flags; \
 254     char * ptr = (LOC); \
 255     if (COFF2_P (ABFD)) \
 256       flags = H_GET_32 (ABFD, ptr); \
 257     else \
 258       flags = H_GET_16 (ABFD, ptr - 4); \
 259     flags; \
 260   })
 261 #define PUT_SCNHDR_FLAGS(ABFD, VAL, LOC) \
 262   do \
 263     { \
 264       char * ptr = (LOC); \
 265       if (COFF2_P (ABFD)) \
 266         H_PUT_32 (ABFD, VAL, ptr); \
 267       else \
 268         H_PUT_16 (ABFD, VAL, ptr - 4); \
 269     } \
 270   while (0)
 271 #define GET_SCNHDR_PAGE(ABFD, LOC) \
 272   ({ \
 273     unsigned page; \
 274     char * ptr = (LOC); \
 275     if (COFF2_P (ABFD)) \
 276       page = H_GET_16 (ABFD, ptr); \
 277     else \
 278       page = (unsigned) H_GET_8 (ABFD, ptr - 7); \
 279     page; \
 280   })
 281 /* On output, make sure that the "reserved" field is zero.  */
 282 #define PUT_SCNHDR_PAGE(ABFD, VAL, LOC) \
 283   do \
 284     { \
 285       char * ptr = (LOC); \
 286       if (COFF2_P (ABFD)) \
 287         H_PUT_16 (ABFD, VAL, ptr); \
 288       else \
 289         { \
 290           H_PUT_8 (ABFD, VAL, ptr - 7); \
 291           H_PUT_8 (ABFD, 0, ptr - 8); \
 292         } \
 293     } \
 294   while (0)
 295 #else
 296 #define GET_SCNHDR_NLNNO(ABFD, LOC) \
 297   (COFF2_P (ABFD) ? H_GET_32 (ABFD, LOC) : H_GET_16 (ABFD, (LOC) - 2))
 298 #define PUT_SCNHDR_NLNNO(ABFD, VAL, LOC) \
 299   (COFF2_P (ABFD) ? H_PUT_32 (ABFD, VAL, LOC) : H_PUT_16 (ABFD, VAL, (LOC) - 2))
 300 #define GET_SCNHDR_FLAGS(ABFD, LOC) \
 301   (COFF2_P (ABFD) ? H_GET_32 (ABFD, LOC) : H_GET_16 (ABFD, (LOC) - 4))
 302 #define PUT_SCNHDR_FLAGS(ABFD, VAL, LOC) \
 303   (COFF2_P (ABFD) ? H_PUT_32 (ABFD, VAL, LOC) : H_PUT_16 (ABFD, VAL, (LOC) - 4))
 304 #define GET_SCNHDR_PAGE(ABFD, LOC) \
 305   (COFF2_P (ABFD) ? H_GET_16 (ABFD, LOC) : (unsigned) H_GET_8 (ABFD, (LOC) - 7))
 306 /* On output, make sure that the "reserved" field is zero.  */
 307 #define PUT_SCNHDR_PAGE(ABFD, VAL, LOC) \
 308   (COFF2_P (ABFD) \
 309    ? H_PUT_16 (ABFD, VAL, LOC) \
 310    : H_PUT_8 (ABFD, VAL, (LOC) - 7), H_PUT_8 (ABFD, 0, (LOC) - 8))
 311 #endif
 312
 313
 314 /* TI COFF stores section size as number of bytes (address units, not octets),
 315    so adjust to be number of octets, which is what BFD expects */
 316 #define GET_SCNHDR_SIZE(ABFD, SZP) \
 317   (H_GET_32 (ABFD, SZP) * bfd_octets_per_byte (ABFD))
 318 #define PUT_SCNHDR_SIZE(ABFD, SZ, SZP) \
 319   H_PUT_32 (ABFD, (SZ) / bfd_octets_per_byte (ABFD), SZP)
 320
 321 #define COFF_ADJUST_SCNHDR_IN_POST(ABFD, EXT, INT) \
 322   do                                                                    \
 323     {                                                                   \
 324       ((struct internal_scnhdr *)(INT))->s_page =                       \
 325         GET_SCNHDR_PAGE (ABFD, ((SCNHDR *)(EXT))->s_page);              \
 326     }                                                                   \
 327    while (0)
 328
 329 /* The entire scnhdr may not be assigned.
 330    Ensure that everything is initialized.  */
 331 #define COFF_ADJUST_SCNHDR_OUT_PRE(ABFD, INT, EXT)      \
 332   do                                                    \
 333     {                                                   \
 334       memset((EXT), 0, sizeof (SCNHDR));                \
 335     }                                                   \
 336   while (0)
 337
 338 /* The line number and reloc overflow checking in coff_swap_scnhdr_out in
 339    coffswap.h doesn't use PUT_X for s_nlnno and s_nreloc.
 340    Due to different sized v0/v1/v2 section headers, we have to re-write these
 341    fields.
 342  */
 343 #define COFF_ADJUST_SCNHDR_OUT_POST(ABFD, INT, EXT) \
 344   do                                                                       \
 345     {                                                                      \
 346       PUT_SCNHDR_NLNNO (ABFD, ((struct internal_scnhdr *)(INT))->s_nlnno,  \
 347                         ((SCNHDR *)(EXT))->s_nlnno);                       \
 348       PUT_SCNHDR_NRELOC (ABFD, ((struct internal_scnhdr *)(INT))->s_nreloc,\
 349                          ((SCNHDR *)(EXT))->s_nreloc);                     \
 350       PUT_SCNHDR_FLAGS (ABFD, ((struct internal_scnhdr *)(INT))->s_flags,  \
 351                         ((SCNHDR *)(EXT))->s_flags);                       \
 352       PUT_SCNHDR_PAGE (ABFD, ((struct internal_scnhdr *)(INT))->s_page,    \
 353                        ((SCNHDR *)(EXT))->s_page);                         \
 354     }                                                                      \
 355    while (0)
 356
 357 /*
 358  * names of "special" sections
 359  */
 360 #define _TEXT   ".text"
 361 #define _DATA   ".data"
 362 #define _BSS    ".bss"
 363 #define _CINIT  ".cinit"            /* initialized C data */
 364 #define _SCONST  ".const"           /* constants */
 365 #define _SWITCH ".switch"           /* switch tables */
 366 #define _STACK  ".stack"            /* C stack */
 367 #define _SYSMEM ".sysmem"           /* used for malloc et al. syscalls */
 368
 369 /********************** LINE NUMBERS **********************/
 370
 371 /* 1 line number entry for every "breakpointable" source line in a section.
 372  * Line numbers are grouped on a per function basis; first entry in a function
 373  * grouping will have l_lnno = 0 and in place of physical address will be the
 374  * symbol table index of the function name.
 375  */
 376 struct external_lineno {
 377   union {
 378     char l_symndx[4];   /* function name symbol index, iff l_lnno == 0*/
 379     char l_paddr[4];    /* (physical) address of line number    */
 380   } l_addr;
 381   char l_lnno[2];       /* line number          */
 382 };
 383
 384 #define LINENO  struct external_lineno
 385 #define LINESZ  6
 386
 387
 388 /********************** SYMBOLS **********************/
 389
 390 /* NOTE: this is what a local label looks like in assembly source; what it
 391    looks like in COFF output is undefined */
 392 #define TICOFF_LOCAL_LABEL_P(NAME) \
 393 ((NAME[0] == '$' && NAME[1] >= '0' && NAME[1] <= '9' && NAME[2] == '\0') \
 394  || NAME[strlen(NAME)-1] == '?')
 395
 396 #define E_SYMNMLEN      8       /* # characters in a symbol name        */
 397 #define E_FILNMLEN      14      /* # characters in a file name          */
 398 #define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
 399
 400 struct external_syment
 401 {
 402   union {
 403     char e_name[E_SYMNMLEN];
 404     struct {
 405       char e_zeroes[4];
 406       char e_offset[4];
 407     } e;
 408   } e;
 409   char e_value[4];
 410   char e_scnum[2];
 411   char e_type[2];
 412   char e_sclass[1];
 413   char e_numaux[1];
 414 };
 415
 416
 417 #define N_BTMASK        (017)
 418 #define N_TMASK         (060)
 419 #define N_BTSHFT        (4)
 420 #define N_TSHIFT        (2)
 421
 422
 423 union external_auxent {
 424   struct {
 425         char x_tagndx[4];       /* str, un, or enum tag indx */
 426         union {
 427           struct {
 428                 char  x_lnno[2]; /* declaration line number */
 429                 char  x_size[2]; /* str/union/array size */
 430           } x_lnsz;
 431           char x_fsize[4];      /* size of function */
 432         } x_misc;
 433         union {
 434           struct {              /* if ISFCN, tag, or .bb */
 435                 char x_lnnoptr[4];      /* ptr to fcn line # */
 436                 char x_endndx[4];       /* entry ndx past block end */
 437           } x_fcn;
 438           struct {              /* if ISARY, up to 4 dimen. */
 439                 char x_dimen[E_DIMNUM][2];
 440           } x_ary;
 441         } x_fcnary;
 442         char x_tvndx[2];                /* tv index */
 443   } x_sym;
 444
 445   union {
 446         char x_fname[E_FILNMLEN];
 447         struct {
 448           char x_zeroes[4];
 449           char x_offset[4];
 450         } x_n;
 451   } x_file;
 452
 453   struct {
 454         char x_scnlen[4];                       /* section length */
 455         char x_nreloc[2];       /* # relocation entries */
 456         char x_nlinno[2];       /* # line numbers */
 457   } x_scn;
 458
 459   struct {
 460         char x_tvfill[4];       /* tv fill value */
 461         char x_tvlen[2];        /* length of .tv */
 462         char x_tvran[2][2];     /* tv range */
 463   } x_tv;               /* info about .tv section (in auxent of symbol .tv)) */
 464
 465
 466 };
 467
 468 #define SYMENT  struct external_syment
 469 #define SYMESZ  18
 470 #define AUXENT  union external_auxent
 471 #define AUXESZ  18
 472
 473 /* section lengths are in target bytes (not host bytes) */
 474 #define GET_SCN_SCNLEN(ABFD, EXT) \
 475   (H_GET_32 (ABFD, (EXT)->x_scn.x_scnlen) * bfd_octets_per_byte (ABFD))
 476 #define PUT_SCN_SCNLEN(ABFD, INT, EXT) \
 477   H_PUT_32 (ABFD, (INT) / bfd_octets_per_byte (ABFD), (EXT)->x_scn.x_scnlen)
 478
 479 /* lnsz size is in bits in COFF file, in bytes in BFD */
 480 #define GET_LNSZ_SIZE(abfd, ext) \
 481  (H_GET_16 (abfd, ext->x_sym.x_misc.x_lnsz.x_size) / (in_class != C_FIELD ? 8 : 1))
 482
 483 #define PUT_LNSZ_SIZE(abfd, in, ext) \
 484   H_PUT_16 (abfd, ((in_class != C_FIELD) ? (in) * 8 : (in)), \
 485            ext->x_sym.x_misc.x_lnsz.x_size)
 486
 487 /* TI COFF stores offsets for MOS and MOU in bits; BFD expects bytes
 488    Also put the load page flag of the section into the symbol value if it's an
 489    address.  */
 490 #ifndef NEEDS_PAGE
 491 #define NEEDS_PAGE(X) 0
 492 #define PAGE_MASK 0
 493 #endif
 494 #define COFF_ADJUST_SYM_IN_POST(ABFD, EXT, INT) \
 495   do                                                                    \
 496     {                                                                   \
 497       struct internal_syment *dst = (struct internal_syment *)(INT);    \
 498       if (dst->n_sclass == C_MOS || dst->n_sclass == C_MOU)             \
 499         dst->n_value /= 8;                                              \
 500       else if (NEEDS_PAGE (dst->n_sclass)) {                            \
 501         asection *scn = coff_section_from_bfd_index (abfd, dst->n_scnum); \
 502         dst->n_value |= (scn->lma & PAGE_MASK);                         \
 503       }                                                                 \
 504     }                                                                   \
 505    while (0)
 506
 507 #define COFF_ADJUST_SYM_OUT_POST(ABFD, INT, EXT) \
 508   do                                                                    \
 509     {                                                                   \
 510        struct internal_syment *src = (struct internal_syment *)(INT);   \
 511        SYMENT *dst = (SYMENT *)(EXT);                                   \
 512        if (src->n_sclass == C_MOU || src->n_sclass == C_MOS)            \
 513          H_PUT_32 (abfd, src->n_value * 8, dst->e_value);               \
 514        else if (NEEDS_PAGE (src->n_sclass)) {                           \
 515          H_PUT_32 (abfd, src->n_value &= ~PAGE_MASK, dst->e_value);     \
 516        }                                                                \
 517     }                                                                   \
 518    while (0)
 519
 520 /* Detect section-relative absolute symbols so they get flagged with a sym
 521    index of -1.
 522 */
 523 #define SECTION_RELATIVE_ABSOLUTE_SYMBOL_P(RELOC, SECT) \
 524   ((*(RELOC)->sym_ptr_ptr)->section->output_section == (SECT) \
 525    && (RELOC)->howto->name[0] == 'A')
 526
 527 /********************** RELOCATION DIRECTIVES **********************/
 528
 529 struct external_reloc_v0
 530 {
 531   char r_vaddr[4];
 532   char r_symndx[2];
 533   char r_reserved[2];
 534   char r_type[2];
 535 };
 536
 537 struct external_reloc
 538 {
 539   char r_vaddr[4];
 540   char r_symndx[4];
 541   char r_reserved[2]; /* extended pmad byte for COFF2 */
 542   char r_type[2];
 543 };
 544
 545 #define RELOC struct external_reloc
 546 #define RELSZ_V0 10                 /* FIXME -- coffcode.h needs fixing */
 547 #define RELSZ 12                    /* for COFF1/2 */
 548
 549 /* various relocation types.  */
 550 #define R_ABS     0x0000            /* no relocation */
 551 #define R_REL13   0x002A            /* 13-bit direct reference (???) */
 552 #define R_PARTLS7 0x0028            /* 7 LSBs of an address */
 553 #define R_PARTMS9 0x0029            /* 9MSBs of an address */
 554 #define R_EXTWORD 0x002B            /* 23-bit direct reference */
 555 #define R_EXTWORD16 0x002C          /* 16-bit direct reference to 23-bit addr*/
 556 #define R_EXTWORDMS7 0x002D         /* upper 7 bits of 23-bit address */
 557
 558 #endif /* COFF_TI_H */