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/*** coff information for TI TMS320C80 (MVP) */

/********************** 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];    /* target id (TIc80 specific)   */

};

#define TIC80_ARCH_MAGIC        0x0C1   /* Goes in the file header magic number field */

#define TIC80_TARGET_ID         0x95    /* Goes in the target id field */

#define TIC80BADMAG(x) ((x).f_magic != TIC80_ARCH_MAGIC)

#define FILHDR  struct external_filehdr

#define FILHSZ  22

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

typedef struct

{

  char  magic[2];               /* type of file                         */

  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 TIC80_AOUTHDR_MAGIC     0x108   /* Goes in the optional file header magic number field */

#define AOUTHDRSZ 28

#define AOUTSZ 28

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

struct external_scnhdr {

        char            s_name[8];      /* section name                 */

        char            s_paddr[4];     /* physical address, aliased s_nlib */

        char            s_vaddr[4];     /* virtual address              */

        char            s_size[4];      /* section size                 */

        char            s_scnptr[4];    /* file ptr to raw data for section */

        char            s_relptr[4];    /* file ptr to relocation       */

        char            s_lnnoptr[4];   /* file ptr to line numbers     */

        char            s_nreloc[2];    /* number of relocation entries */

        char            s_nlnno[2];     /* number of line number entries*/

        char            s_flags[2];     /* flags                        */

        char            s_reserved[1];  /* reserved (TIc80 specific)    */

        char            s_mempage[1];   /* memory page number (TIc80)   */

};

/*

 * names of "special" sections

 */

#define _TEXT   ".text"

#define _DATA   ".data"

#define _BSS    ".bss"

#define _CINIT  ".cinit"

#define _CONST  ".const"

#define _SWITCH ".switch"

#define _STACK  ".stack"

#define _SYSMEM ".sysmem"

#define SCNHDR  struct external_scnhdr

#define SCNHSZ  40

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

/* 1 line number entry for every "breakpointable" source line in a section.

 * Line numbers are grouped on a per function basis; first entry in a function

 * grouping will have l_lnno = 0 and in place of physical address will be the

 * symbol table index of the function name.

 */

struct external_lineno {

        union {

                char l_symndx[4];       /* function name symbol index, iff l_lnno == 0*/

                char l_paddr[4];        /* (physical) address of line number    */

        } l_addr;

        char l_lnno[2];                 /* line number  */

};

#define GET_LINENO_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) (ext->l_lnno));

#define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_16(abfd,val,  (bfd_byte *) (ext->l_lnno));

#define LINENO  struct external_lineno

#define LINESZ  6

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

#define E_SYMNMLEN      8       /* # characters in a symbol name        */

#define E_FILNMLEN      14      /* # characters in a file name          */

#define E_DIMNUM        4       /* # array dimensions in auxiliary entry */

struct external_syment

{

  union {

    char e_name[E_SYMNMLEN];

    struct {

      char e_zeroes[4];

      char e_offset[4];

    } e;

  } e;

  char e_value[4];

  char e_scnum[2];

  char e_type[2];

  char e_sclass[1];

  char e_numaux[1];

};

#define N_BTMASK        (017)

#define N_TMASK         (060)

#define N_BTSHFT        (4)

#define N_TSHIFT        (2)

/* FIXME - need to correlate with TIc80 Code Generation Tools User's Guide, CG:A-25 */

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

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

/* The external reloc has an offset field, because some of the reloc

   types on the h8 don't have room in the instruction for the entire

   offset - eg the strange jump and high page addressing modes */

struct external_reloc {

  char r_vaddr[4];

  char r_symndx[4];

  char r_reserved[2];

  char r_type[2];

};

#define RELOC struct external_reloc

#define RELSZ 12

/* TIc80 relocation types. */

#define R_ABS           0x00            /* Absolute address - no relocation */

#define R_RELLONGX      0x11            /* PP: 32 bits, direct */

#define R_PPBASE        0x34            /* PP: Global base address type */

#define R_PPLBASE       0x35            /* PP: Local base address type */

#define R_PP15          0x38            /* PP: Global 15 bit offset */

#define R_PP15W         0x39            /* PP: Global 15 bit offset divided by 4 */

#define R_PP15H         0x3A            /* PP: Global 15 bit offset divided by 2 */

#define R_PP16B         0x3B            /* PP: Global 16 bit offset for bytes */

#define R_PPL15         0x3C            /* PP: Local 15 bit offset */

#define R_PPL15W        0x3D            /* PP: Local 15 bit offset divided by 4 */

#define R_PPL15H        0x3E            /* PP: Local 15 bit offset divided by 2 */

#define R_PPL16B        0x3F            /* PP: Local 16 bit offset for bytes */

#define R_PPN15         0x40            /* PP: Global 15 bit negative offset */

#define R_PPN15W        0x41            /* PP: Global 15 bit negative offset divided by 4 */

#define R_PPN15H        0x42            /* PP: Global 15 bit negative offset divided by 2 */

#define R_PPN16B        0x43            /* PP: Global 16 bit negative byte offset */

#define R_PPLN15        0x44            /* PP: Local 15 bit negative offset */

#define R_PPLN15W       0x45            /* PP: Local 15 bit negative offset divided by 4 */

#define R_PPLN15H       0x46            /* PP: Local 15 bit negative offset divided by 2 */

#define R_PPLN16B       0x47            /* PP: Local 16 bit negative byte offset */

#define R_MPPCR15W      0x4E            /* MP: 15 bit PC-relative divided by 4 */

#define R_MPPCR         0x4F            /* MP: 32 bit PC-relative divided by 4 */