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 (C) 2000-2017 Free Software Foundation, Inc.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #ifndef COFF_TI_H
  23 #define COFF_TI_H
  24
  25 /* Note "coff/external.h is not used because TI adds extra fields to the structures.  */
  26
  27 /********************** FILE HEADER **********************/
  28
  29 struct external_filehdr
  30   {
  31     char f_magic[2];    /* magic number                 */
  32     char f_nscns[2];    /* number of sections           */
  33     char f_timdat[4];   /* time & date stamp            */
  34     char f_symptr[4];   /* file pointer to symtab       */
  35     char f_nsyms[4];    /* number of symtab entries     */
  36     char f_opthdr[2];   /* sizeof(optional hdr)         */
  37     char f_flags[2];    /* flags                        */
  38     char f_target_id[2];    /* magic no. (TI COFF-specific) */
  39   };
  40
  41 /* COFF0 has magic number in f_magic, and omits f_target_id from the file
  42    header; for later versions, f_magic is 0xC1 for COFF1 and 0xC2 for COFF2
  43    and the target-specific magic number is found in f_target_id */
  44
  45 #define TICOFF0MAGIC    TI_TARGET_ID
  46 #define TICOFF1MAGIC    0x00C1
  47 #define TICOFF2MAGIC    0x00C2
  48 #define TICOFF_AOUT_MAGIC    0x0108 /* magic number in optional header */
  49 #define TICOFF          1 /* customize coffcode.h */
  50
  51 /* The target_id field changes depending on the particular CPU target */
  52 /* for COFF0, the target id appeared in f_magic, where COFFX magic is now */
  53 #ifndef TI_TARGET_ID
  54 #error "TI_TARGET_ID needs to be defined for your CPU"
  55 #endif
  56
  57 /* Which bfd_arch to use... */
  58 #ifndef TICOFF_TARGET_ARCH
  59 #error "TICOFF_TARGET_ARCH needs to be defined for your CPU"
  60 #endif
  61
  62 #ifndef TICOFF_TARGET_MACHINE_GET
  63 #define TICOFF_TARGET_MACHINE_GET(FLAGS) 0
  64 #endif
  65
  66 #ifndef TICOFF_TARGET_MACHINE_SET
  67 #define TICOFF_TARGET_MACHINE_SET(FLAGSP, MACHINE)
  68 #endif
  69
  70 /* Default to COFF2 for file output */
  71 #ifndef TICOFF_DEFAULT_MAGIC
  72 #define TICOFF_DEFAULT_MAGIC TICOFF2MAGIC
  73 #endif
  74
  75 /* This value is made available in the rare case where a bfd is unavailable */
  76 #ifndef OCTETS_PER_BYTE_POWER
  77 #error "OCTETS_PER_BYTE_POWER not defined for this CPU"
  78 #else
  79 #define OCTETS_PER_BYTE (1<<OCTETS_PER_BYTE_POWER)
  80 #endif
  81
  82 /* default alignment is on a byte (not octet!) boundary */
  83 #ifndef COFF_DEFAULT_SECTION_ALIGNMENT_POWER
  84 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 0
  85 #endif
  86
  87 /* TI COFF encodes the section alignment in the section header flags */
  88 #define COFF_ALIGN_IN_SECTION_HEADER 1
  89 #define COFF_ALIGN_IN_S_FLAGS 1
  90 /* requires a power-of-two argument */
  91 #define COFF_ENCODE_ALIGNMENT(S,X) ((S).s_flags |= (((unsigned)(X)&0xF)<<8))
  92 /* result is a power of two */
  93 #define COFF_DECODE_ALIGNMENT(X) (((X)>>8)&0xF)
  94
  95 #define COFF0_P(ABFD) (bfd_coff_filhsz(ABFD) == FILHSZ_V0)
  96 #define COFF2_P(ABFD) (bfd_coff_scnhsz(ABFD) != SCNHSZ_V01)
  97
  98 #define COFF0_BADMAG(x) ((x).f_magic != TICOFF0MAGIC)
  99 #define COFF1_BADMAG(x) ((x).f_magic != TICOFF1MAGIC || (x).f_target_id != TI_TARGET_ID)
 100 #define COFF2_BADMAG(x) ((x).f_magic != TICOFF2MAGIC || (x).f_target_id != TI_TARGET_ID)
 101
 102 /* we need to read/write an extra field in the coff file header */
 103 #ifndef COFF_ADJUST_FILEHDR_IN_POST
 104 #define COFF_ADJUST_FILEHDR_IN_POST(abfd, src, dst) \
 105   do                                                                    \
 106     {                                                                   \
 107       if (!COFF0_P (abfd))                                              \
 108         ((struct internal_filehdr *)(dst))->f_target_id =               \
 109           H_GET_16 (abfd, ((FILHDR *)(src))->f_target_id);              \
 110     }                                                                   \
 111   while (0)
 112 #endif
 113
 114 #ifndef COFF_ADJUST_FILEHDR_OUT_POST
 115 #define COFF_ADJUST_FILEHDR_OUT_POST(abfd, src, dst) \
 116   do                                                                     \
 117     {                                                                    \
 118       if (!COFF0_P (abfd))                                               \
 119         H_PUT_16 (abfd, ((struct internal_filehdr *)(src))->f_target_id, \
 120                  ((FILHDR *)(dst))->f_target_id);                        \
 121     }                                                                    \
 122   while (0)
 123 #endif
 124
 125 #define FILHDR  struct external_filehdr
 126 #define FILHSZ  22
 127 #define FILHSZ_V0 20                /* COFF0 omits target_id field */
 128
 129 /* File header flags */
 130 #define F_RELFLG        (0x0001)
 131 #define F_EXEC          (0x0002)
 132 #define F_LNNO          (0x0004)
 133 #define F_VERS          (0x0010) /* TMS320C4x code */
 134 /* F_LSYMS needs to be redefined in your source file */
 135 #define F_LSYMS_TICOFF  (0x0010) /* normal COFF is 0x8 */
 136
 137 #define F_10            0x00    /* file built for TMS320C1x devices */
 138 #define F_20            0x10    /* file built for TMS320C2x devices */
 139 #define F_25            0x20    /* file built for TMS320C2x/C5x devices */
 140 #define F_LENDIAN       0x0100  /* 16 bits/word, LSB first */
 141 #define F_SYMMERGE      0x1000  /* duplicate symbols were removed */
 142
 143 /********************** OPTIONAL HEADER **********************/
 144
 145
 146 typedef struct
 147 {
 148   char  magic[2];               /* type of file (0x108)                 */
 149   char  vstamp[2];              /* version stamp                        */
 150   char  tsize[4];               /* text size in bytes, padded to FW bdry*/
 151   char  dsize[4];               /* initialized data "  "                */
 152   char  bsize[4];               /* uninitialized data "   "             */
 153   char  entry[4];               /* entry pt.                            */
 154   char  text_start[4];          /* base of text used for this file */
 155   char  data_start[4];          /* base of data used for this file */
 156 }
 157 AOUTHDR;
 158
 159
 160 #define AOUTHDRSZ 28
 161 #define AOUTSZ 28
 162
 163
 164 /********************** SECTION HEADER **********************/
 165 /* COFF0, COFF1 */
 166 struct external_scnhdr_v01 {
 167         char            s_name[8];      /* section name                 */
 168         char            s_paddr[4];     /* physical address, aliased s_nlib */
 169         char            s_vaddr[4];     /* virtual address              */
 170         char            s_size[4];      /* section size (in WORDS)      */
 171         char            s_scnptr[4];    /* file ptr to raw data for section */
 172         char            s_relptr[4];    /* file ptr to relocation       */
 173         char            s_lnnoptr[4];   /* file ptr to line numbers     */
 174         char            s_nreloc[2];    /* number of relocation entries */
 175         char            s_nlnno[2];     /* number of line number entries*/
 176         char            s_flags[2];     /* flags                        */
 177         char            s_reserved[1];  /* reserved                     */
 178         char            s_page[1];      /* section page number (LOAD)   */
 179 };
 180
 181 /* COFF2 */
 182 struct external_scnhdr {
 183         char            s_name[8];      /* section name                 */
 184         char            s_paddr[4];     /* physical address, aliased s_nlib */
 185         char            s_vaddr[4];     /* virtual address              */
 186         char            s_size[4];      /* section size (in WORDS)      */
 187         char            s_scnptr[4];    /* file ptr to raw data for section */
 188         char            s_relptr[4];    /* file ptr to relocation       */
 189         char            s_lnnoptr[4];   /* file ptr to line numbers     */
 190         char            s_nreloc[4];    /* number of relocation entries */
 191         char            s_nlnno[4];     /* number of line number entries*/
 192         char            s_flags[4];     /* flags                        */
 193         char            s_reserved[2];  /* reserved                     */
 194         char            s_page[2];      /* section page number (LOAD)   */
 195 };
 196
 197 /*
 198  * Special section flags
 199  */
 200
 201 /* TI COFF defines these flags;
 202    STYP_CLINK: the section should be excluded from the final
 203    linker output if there are no references found to any symbol in the section
 204    STYP_BLOCK: the section should be blocked, i.e. if the section would cross
 205    a page boundary, it is started at a page boundary instead.
 206    TI COFF puts the section alignment power of two in the section flags
 207    e.g. 2**N is alignment, flags |= (N & 0xF) << 8
 208 */
 209 #define STYP_CLINK      (0x4000)
 210 #define STYP_BLOCK      (0x1000)
 211 #define STYP_ALIGN      (0x0F00) /* TI COFF stores section alignment here */
 212
 213 #define SCNHDR_V01 struct external_scnhdr_v01
 214 #define SCNHDR struct external_scnhdr
 215 #define SCNHSZ_V01 40                  /* for v0 and v1 */
 216 #define SCNHSZ 48
 217
 218 /* COFF2 changes the offsets and sizes of these fields
 219    Assume we're dealing with the COFF2 scnhdr structure, and adjust
 220    accordingly.  Note: The GNU C versions of some of these macros
 221    are necessary in order to avoid compile time warnings triggered
 222    gcc's array bounds checking.  The PUT_SCNHDR_PAGE macro also has
 223    the advantage on not evaluating LOC twice.  */
 224
 225 #define GET_SCNHDR_NRELOC(ABFD, LOC) \
 226   (COFF2_P (ABFD) ? H_GET_32 (ABFD, LOC) : H_GET_16 (ABFD, LOC))
 227 #define PUT_SCNHDR_NRELOC(ABFD, VAL, LOC) \
 228   (COFF2_P (ABFD) ? H_PUT_32 (ABFD, VAL, LOC) : H_PUT_16 (ABFD, VAL, LOC))
 229 #ifdef __GNUC__
 230 #define GET_SCNHDR_NLNNO(ABFD, LOC) \
 231   ({ \
 232     int nlnno;          \
 233     char * ptr = (LOC); \
 234     if (COFF2_P (ABFD)) \
 235       nlnno = H_GET_32 (ABFD, ptr); \
 236     else \
 237       nlnno = H_GET_16 (ABFD, ptr - 2); \
 238     nlnno; \
 239   })
 240 #define PUT_SCNHDR_NLNNO(ABFD, VAL, LOC) \
 241   do \
 242     { \
 243       char * ptr = (LOC); \
 244       if (COFF2_P (ABFD)) \
 245         H_PUT_32 (ABFD, VAL, ptr); \
 246       else \
 247         H_PUT_16 (ABFD, VAL, ptr - 2); \
 248     } \
 249   while (0)
 250 #define GET_SCNHDR_FLAGS(ABFD, LOC) \
 251   ({ \
 252     int flags; \
 253     char * ptr = (LOC); \
 254     if (COFF2_P (ABFD)) \
 255       flags = H_GET_32 (ABFD, ptr); \
 256     else \
 257       flags = H_GET_16 (ABFD, ptr - 4); \
 258     flags; \
 259   })
 260 #define PUT_SCNHDR_FLAGS(ABFD, VAL, LOC) \
 261   do \
 262     { \
 263       char * ptr = (LOC); \
 264       if (COFF2_P (ABFD)) \
 265         H_PUT_32 (ABFD, VAL, ptr); \
 266       else \
 267         H_PUT_16 (ABFD, VAL, ptr - 4); \
 268     } \
 269   while (0)
 270 #define GET_SCNHDR_PAGE(ABFD, LOC) \
 271   ({ \
 272     unsigned page; \
 273     char * ptr = (LOC); \
 274     if (COFF2_P (ABFD)) \
 275       page = H_GET_16 (ABFD, ptr); \
 276     else \
 277       page = (unsigned) H_GET_8 (ABFD, ptr - 7); \
 278     page; \
 279   })
 280 /* On output, make sure that the "reserved" field is zero.  */
 281 #define PUT_SCNHDR_PAGE(ABFD, VAL, LOC) \
 282   do \
 283     { \
 284       char * ptr = (LOC); \
 285       if (COFF2_P (ABFD)) \
 286         H_PUT_16 (ABFD, VAL, ptr); \
 287       else \
 288         { \
 289           H_PUT_8 (ABFD, VAL, ptr - 7); \
 290           H_PUT_8 (ABFD, 0, ptr - 8); \
 291         } \
 292     } \
 293   while (0)
 294 #else
 295 #define GET_SCNHDR_NLNNO(ABFD, LOC) \
 296   (COFF2_P (ABFD) ? H_GET_32 (ABFD, LOC) : H_GET_16 (ABFD, (LOC) - 2))
 297 #define PUT_SCNHDR_NLNNO(ABFD, VAL, LOC) \
 298   (COFF2_P (ABFD) ? H_PUT_32 (ABFD, VAL, LOC) : H_PUT_16 (ABFD, VAL, (LOC) - 2))
 299 #define GET_SCNHDR_FLAGS(ABFD, LOC) \
 300   (COFF2_P (ABFD) ? H_GET_32 (ABFD, LOC) : H_GET_16 (ABFD, (LOC) - 4))
 301 #define PUT_SCNHDR_FLAGS(ABFD, VAL, LOC) \
 302   (COFF2_P (ABFD) ? H_PUT_32 (ABFD, VAL, LOC) : H_PUT_16 (ABFD, VAL, (LOC) - 4))
 303 #define GET_SCNHDR_PAGE(ABFD, LOC) \
 304   (COFF2_P (ABFD) ? H_GET_16 (ABFD, LOC) : (unsigned) H_GET_8 (ABFD, (LOC) - 7))
 305 /* On output, make sure that the "reserved" field is zero.  */
 306 #define PUT_SCNHDR_PAGE(ABFD, VAL, LOC) \
 307   (COFF2_P (ABFD) \
 308    ? H_PUT_16 (ABFD, VAL, LOC) \
 309    : H_PUT_8 (ABFD, VAL, (LOC) - 7), H_PUT_8 (ABFD, 0, (LOC) - 8))
 310 #endif
 311
 312
 313 /* TI COFF stores section size as number of bytes (address units, not octets),
 314    so adjust to be number of octets, which is what BFD expects */
 315 #define GET_SCNHDR_SIZE(ABFD, SZP) \
 316   (H_GET_32 (ABFD, SZP) * bfd_octets_per_byte (ABFD))
 317 #define PUT_SCNHDR_SIZE(ABFD, SZ, SZP) \
 318   H_PUT_32 (ABFD, (SZ) / bfd_octets_per_byte (ABFD), SZP)
 319
 320 #define COFF_ADJUST_SCNHDR_IN_POST(ABFD, EXT, INT) \
 321   do                                                                    \
 322     {                                                                   \
 323       ((struct internal_scnhdr *)(INT))->s_page =                       \
 324         GET_SCNHDR_PAGE (ABFD, ((SCNHDR *)(EXT))->s_page);              \
 325     }                                                                   \
 326    while (0)
 327
 328 /* The entire scnhdr may not be assigned.
 329    Ensure that everything is initialized.  */
 330 #define COFF_ADJUST_SCNHDR_OUT_PRE(ABFD, INT, EXT)      \
 331   do                                                    \
 332     {                                                   \
 333       memset((EXT), 0, sizeof (SCNHDR));                \
 334     }                                                   \
 335   while (0)
 336
 337 /* The line number and reloc overflow checking in coff_swap_scnhdr_out in
 338    coffswap.h doesn't use PUT_X for s_nlnno and s_nreloc.
 339    Due to different sized v0/v1/v2 section headers, we have to re-write these
 340    fields.
 341  */
 342 #define COFF_ADJUST_SCNHDR_OUT_POST(ABFD, INT, EXT) \
 343   do                                                                       \
 344     {                                                                      \
 345       PUT_SCNHDR_NLNNO (ABFD, ((struct internal_scnhdr *)(INT))->s_nlnno,  \
 346                         ((SCNHDR *)(EXT))->s_nlnno);                       \
 347       PUT_SCNHDR_NRELOC (ABFD, ((struct internal_scnhdr *)(INT))->s_nreloc,\
 348                          ((SCNHDR *)(EXT))->s_nreloc);                     \
 349       PUT_SCNHDR_FLAGS (ABFD, ((struct internal_scnhdr *)(INT))->s_flags,  \
 350                         ((SCNHDR *)(EXT))->s_flags);                       \
 351       PUT_SCNHDR_PAGE (ABFD, ((struct internal_scnhdr *)(INT))->s_page,    \
 352                        ((SCNHDR *)(EXT))->s_page);                         \
 353     }                                                                      \
 354    while (0)
 355
 356 /*
 357  * names of "special" sections
 358  */
 359 #define _TEXT   ".text"
 360 #define _DATA   ".data"
 361 #define _BSS    ".bss"
 362 #define _CINIT  ".cinit"            /* initialized C data */
 363 #define _SCONST  ".const"           /* constants */
 364 #define _SWITCH ".switch"           /* switch tables */
 365 #define _STACK  ".stack"            /* C stack */
 366 #define _SYSMEM ".sysmem"           /* used for malloc et al. syscalls */
 367
 368 /********************** LINE NUMBERS **********************/
 369
 370 /* 1 line number entry for every "breakpointable" source line in a section.
 371  * Line numbers are grouped on a per function basis; first entry in a function
 372  * grouping will have l_lnno = 0 and in place of physical address will be the
 373  * symbol table index of the function name.
 374  */
 375 struct external_lineno {
 376   union {
 377     char l_symndx[4];   /* function name symbol index, iff l_lnno == 0*/
 378     char l_paddr[4];    /* (physical) address of line number    */
 379   } l_addr;
 380   char l_lnno[2];       /* line number          */
 381 };
 382
 383 #define LINENO  struct external_lineno
 384 #define LINESZ  6
 385
 386
 387 /********************** SYMBOLS **********************/
 388
 389 /* NOTE: this is what a local label looks like in assembly source; what it
 390    looks like in COFF output is undefined */
 391 #define TICOFF_LOCAL_LABEL_P(NAME) \
 392 ((NAME[0] == '$' && NAME[1] >= '0' && NAME[1] <= '9' && NAME[2] == '\0') \
 393  || NAME[strlen(NAME)-1] == '?')
 394
 395 #define E_SYMNMLEN      8       /* # characters in a symbol name        */
 396 #define E_FILNMLEN      14      /* # characters in a file name          */
 397 #define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
 398
 399 struct external_syment
 400 {
 401   union {
 402     char e_name[E_SYMNMLEN];
 403     struct {
 404       char e_zeroes[4];
 405       char e_offset[4];
 406     } e;
 407   } e;
 408   char e_value[4];
 409   char e_scnum[2];
 410   char e_type[2];
 411   char e_sclass[1];
 412   char e_numaux[1];
 413 };
 414
 415
 416 #define N_BTMASK        (017)
 417 #define N_TMASK         (060)
 418 #define N_BTSHFT        (4)
 419 #define N_TSHIFT        (2)
 420
 421
 422 union external_auxent {
 423   struct {
 424         char x_tagndx[4];       /* str, un, or enum tag indx */
 425         union {
 426           struct {
 427                 char  x_lnno[2]; /* declaration line number */
 428                 char  x_size[2]; /* str/union/array size */
 429           } x_lnsz;
 430           char x_fsize[4];      /* size of function */
 431         } x_misc;
 432         union {
 433           struct {              /* if ISFCN, tag, or .bb */
 434                 char x_lnnoptr[4];      /* ptr to fcn line # */
 435                 char x_endndx[4];       /* entry ndx past block end */
 436           } x_fcn;
 437           struct {              /* if ISARY, up to 4 dimen. */
 438                 char x_dimen[E_DIMNUM][2];
 439           } x_ary;
 440         } x_fcnary;
 441         char x_tvndx[2];                /* tv index */
 442   } x_sym;
 443
 444   union {
 445         char x_fname[E_FILNMLEN];
 446         struct {
 447           char x_zeroes[4];
 448           char x_offset[4];
 449         } x_n;
 450   } x_file;
 451
 452   struct {
 453         char x_scnlen[4];                       /* section length */
 454         char x_nreloc[2];       /* # relocation entries */
 455         char x_nlinno[2];       /* # line numbers */
 456   } x_scn;
 457
 458   struct {
 459         char x_tvfill[4];       /* tv fill value */
 460         char x_tvlen[2];        /* length of .tv */
 461         char x_tvran[2][2];     /* tv range */
 462   } x_tv;               /* info about .tv section (in auxent of symbol .tv)) */
 463
 464
 465 };
 466
 467 #define SYMENT  struct external_syment
 468 #define SYMESZ  18
 469 #define AUXENT  union external_auxent
 470 #define AUXESZ  18
 471
 472 /* section lengths are in target bytes (not host bytes) */
 473 #define GET_SCN_SCNLEN(ABFD, EXT) \
 474   (H_GET_32 (ABFD, (EXT)->x_scn.x_scnlen) * bfd_octets_per_byte (ABFD))
 475 #define PUT_SCN_SCNLEN(ABFD, INT, EXT) \
 476   H_PUT_32 (ABFD, (INT) / bfd_octets_per_byte (ABFD), (EXT)->x_scn.x_scnlen)
 477
 478 /* lnsz size is in bits in COFF file, in bytes in BFD */
 479 #define GET_LNSZ_SIZE(abfd, ext) \
 480  (H_GET_16 (abfd, ext->x_sym.x_misc.x_lnsz.x_size) / (in_class != C_FIELD ? 8 : 1))
 481
 482 #define PUT_LNSZ_SIZE(abfd, in, ext) \
 483   H_PUT_16 (abfd, ((in_class != C_FIELD) ? (in) * 8 : (in)), \
 484            ext->x_sym.x_misc.x_lnsz.x_size)
 485
 486 /* TI COFF stores offsets for MOS and MOU in bits; BFD expects bytes
 487    Also put the load page flag of the section into the symbol value if it's an
 488    address.  */
 489 #ifndef NEEDS_PAGE
 490 #define NEEDS_PAGE(X) 0
 491 #define PAGE_MASK 0
 492 #endif
 493 #define COFF_ADJUST_SYM_IN_POST(ABFD, EXT, INT) \
 494   do                                                                    \
 495     {                                                                   \
 496       struct internal_syment *dst = (struct internal_syment *)(INT);    \
 497       if (dst->n_sclass == C_MOS || dst->n_sclass == C_MOU)             \
 498         dst->n_value /= 8;                                              \
 499       else if (NEEDS_PAGE (dst->n_sclass)) {                            \
 500         asection *scn = coff_section_from_bfd_index (abfd, dst->n_scnum); \
 501         dst->n_value |= (scn->lma & PAGE_MASK);                         \
 502       }                                                                 \
 503     }                                                                   \
 504    while (0)
 505
 506 #define COFF_ADJUST_SYM_OUT_POST(ABFD, INT, EXT) \
 507   do                                                                    \
 508     {                                                                   \
 509        struct internal_syment *src = (struct internal_syment *)(INT);   \
 510        SYMENT *dst = (SYMENT *)(EXT);                                   \
 511        if (src->n_sclass == C_MOU || src->n_sclass == C_MOS)            \
 512          H_PUT_32 (abfd, src->n_value * 8, dst->e_value);               \
 513        else if (NEEDS_PAGE (src->n_sclass)) {                           \
 514          H_PUT_32 (abfd, src->n_value &= ~PAGE_MASK, dst->e_value);     \
 515        }                                                                \
 516     }                                                                   \
 517    while (0)
 518
 519 /* Detect section-relative absolute symbols so they get flagged with a sym
 520    index of -1.
 521 */
 522 #define SECTION_RELATIVE_ABSOLUTE_SYMBOL_P(RELOC, SECT) \
 523   ((*(RELOC)->sym_ptr_ptr)->section->output_section == (SECT) \
 524    && (RELOC)->howto->name[0] == 'A')
 525
 526 /********************** RELOCATION DIRECTIVES **********************/
 527
 528 struct external_reloc_v0
 529 {
 530   char r_vaddr[4];
 531   char r_symndx[2];
 532   char r_reserved[2];
 533   char r_type[2];
 534 };
 535
 536 struct external_reloc
 537 {
 538   char r_vaddr[4];
 539   char r_symndx[4];
 540   char r_reserved[2]; /* extended pmad byte for COFF2 */
 541   char r_type[2];
 542 };
 543
 544 #define RELOC struct external_reloc
 545 #define RELSZ_V0 10                 /* FIXME -- coffcode.h needs fixing */
 546 #define RELSZ 12                    /* for COFF1/2 */
 547
 548 #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
 549   do memset (dst->r_reserved, 0, sizeof (dst->r_reserved)); while (0)
 550
 551 /* various relocation types.  */
 552 #define R_ABS     0x0000            /* no relocation */
 553 #define R_REL13   0x002A            /* 13-bit direct reference (???) */
 554 #define R_PARTLS7 0x0028            /* 7 LSBs of an address */
 555 #define R_PARTMS9 0x0029            /* 9MSBs of an address */
 556 #define R_EXTWORD 0x002B            /* 23-bit direct reference */
 557 #define R_EXTWORD16 0x002C          /* 16-bit direct reference to 23-bit addr*/
 558 #define R_EXTWORDMS7 0x002D         /* upper 7 bits of 23-bit address */
 559
 560 #endif /* COFF_TI_H */