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/*** coff information for Apollo M68K */

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

};

/* Motorola 68000/68008/68010/68020 */

#define MC68MAGIC       0520

#define MC68KWRMAGIC    0520    /* writeable text segments */

#define MC68TVMAGIC     0521

#define MC68KROMAGIC    0521    /* readonly shareable text segments */

#define MC68KPGMAGIC    0522    /* demand paged text segments */

#define M68MAGIC        0210

#define M68TVMAGIC      0211

/* Apollo 68000-based machines have a different magic number. This comes

 * from /usr/include/apollo/filehdr.h

 */

#define APOLLOM68KMAGIC 0627

#define OMAGIC M68MAGIC

#define M68KBADMAG(x) (((x).f_magic!=MC68MAGIC) && ((x).f_magic!=MC68KWRMAGIC) && ((x).f_magic!=MC68TVMAGIC) && \

  ((x).f_magic!=MC68KROMAGIC) && ((x).f_magic!=MC68KPGMAGIC) && ((x).f_magic!=M68MAGIC) && ((x).f_magic!=M68TVMAGIC)  && \

  ((x).f_magic!=APOLLOM68KMAGIC) )

#define FILHDR  struct external_filehdr

#define FILHSZ  20

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

  char  o_sri[4];               /* Apollo specific - .sri data pointer */

  char  o_inlib[4];             /* Apollo specific - .inlib data pointer */

  char  vid[8];                 /* Apollo specific - 64 bit version ID */

}

AOUTHDR;

#define APOLLO_COFF_VERSION_NUMBER 1 /* the value of the aouthdr magic */

#define AOUTHDRSZ 44

#define AOUTSZ 44

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

struct external_scnhdr {

        /* Apollo allow for larger section names by  allowing it to be in

         * the string table.

         */

        char            s_name[8];

        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[4];     /* flags                        */

};

/* If s_zeores is all zeroes, s_offset gives the real location of the name

 * in the string table.

 */

#define s_zeroes section_name.s_name

#define s_offset (section_name.s_name+4)

/*

 * names of "special" sections

 */

#define _TEXT   ".text"

#define _DATA   ".data"

#define _BSS    ".bss"

#define _TV     ".tv"

#define _INIT   ".init"

#define _FINI   ".fini"

#define _LINES  ".lines"

#define _BLOCKS ".blocks"

#define _SRI    ".sri"                  /* Static Resource Information (systype,

 et al.) */

#define _MIR    ".mir"                  /* Module Information Records  */

#define _APTV   ".aptv"                 /* Apollo-style transfer vectors. */

#define _INLIB  ".inlib"                /* Shared Library information */

#define _RWDI   ".rwdi"         /* Read/write data initialization directives for

 compressed sections */

#define _UNWIND ".unwind"               /* Stack unwind information */

#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 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)

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

struct external_reloc {

  char r_vaddr[4];

  char r_symndx[4];

  char r_type[2];

#ifdef M68K_COFF_OFFSET

  char r_offset[4];

#endif

};

#define RELOC struct external_reloc

#ifdef M68K_COFF_OFFSET

#define RELSZ 14

#else

#define RELSZ 10

#endif

/* Apollo specific STYP flags */

#define STYP_RELOCATED_NOT_LOADED 0x00010000    /* Section is relocated normally during linking, but need

                                                   not be loaded during program execution */

#define STYP_DEBUG              0x00020000      /* debug section */

#define STYP_OVERLAY            0x00040000      /* Section is overlayed */

#define STYP_INSTRUCTION        0x00200000      /* Section contains executable code */

#define STYP_ZERO               0x00800000      /* Section is initialized to zero */

#define STYP_INSTALLED          0x02000000      /* Section should be installable in KGT */

#define STYP_LOOK_INSTALLED     0x04000000      /* Look for section in KGT */

#define STYP_SECALIGN1          0x08000000      /* Specially aligned section */

#define STYP_SECALIGN2          0x10000000      /*      "       "       "    */

#define STYP_COMPRESSED         0x20000000      /* No section data per se (s_scnptr = 0), but there are

                                                   initialization directives for it in .rwdi section

                                                   (used in conjunction with STYP_BSS) */