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  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. #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
  550.   do memset (dst->r_reserved, 0, sizeof (dst->r_reserved)); while (0)
  551.  
  552. /* various relocation types.  */
  553. #define R_ABS     0x0000            /* no relocation */
  554. #define R_REL13   0x002A            /* 13-bit direct reference (???) */
  555. #define R_PARTLS7 0x0028            /* 7 LSBs of an address */
  556. #define R_PARTMS9 0x0029            /* 9MSBs of an address */
  557. #define R_EXTWORD 0x002B            /* 23-bit direct reference */
  558. #define R_EXTWORD16 0x002C          /* 16-bit direct reference to 23-bit addr*/
  559. #define R_EXTWORDMS7 0x002D         /* upper 7 bits of 23-bit address */
  560.  
  561. #endif /* COFF_TI_H */
  562.