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/* Basic coff information for the PowerPC

 *

 * Based on coff/rs6000.h, coff/i386.h and others.

 *

 * Initial release: Kim Knuttila (krk@cygnus.com)

 */

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

};

#define FILHDR  struct external_filehdr

#define FILHSZ  20

/* Bits for f_flags:

 *      F_RELFLG        relocation info stripped from file

 *      F_EXEC          file is executable (no unresolved external references)

 *      F_LNNO          line numbers stripped from file

 *      F_LSYMS         local symbols stripped from file

 *      F_AR32WR        file has byte ordering of an AR32WR machine (e.g. vax)

 */

#define F_RELFLG        (0x0001)

#define F_EXEC          (0x0002)

#define F_LNNO          (0x0004)

#define F_LSYMS         (0x0008)

/* extra NT defines */

#define PPCMAGIC       0760         /* peeked on aa PowerPC Windows NT box */

#define DOSMAGIC       0x5a4d       /* from arm.h, i386.h */

#define NT_SIGNATURE   0x00004550   /* from arm.h, i386.h */

/* from winnt.h */

#define IMAGE_NT_OPTIONAL_HDR_MAGIC        0x10b

#define PPCBADMAG(x) ((x).f_magic != PPCMAGIC) 

/********************** 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 AOUTSZ 28

#define AOUTHDRSZ 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[4];     /* flags                            */

};

#define SCNHDR  struct external_scnhdr

#define SCNHSZ  40

/*

 * names of "special" sections

 */

#define _TEXT   ".text"

#define _DATA   ".data"

#define _BSS    ".bss"

#define _COMMENT ".comment"

#define _LIB ".lib"

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

/* Allow the file name length to be overridden in the including file   */

#ifndef E_FILNMLEN

#define E_FILNMLEN      14

#endif

#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 SYMENT  struct external_syment

#define SYMESZ  18      

#define N_BTMASK        (0xf)

#define N_TMASK         (0x30)

#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                  */

    char x_checksum[4];            /* section COMDAT checksum         */

    char x_associated[2];          /* COMDAT associated section index */

    char x_comdat[1];              /* COMDAT selection number         */

  } x_scn;

};

#define AUXENT  union external_auxent

#define AUXESZ  18

#define _ETEXT  "etext"

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

struct external_reloc {

  char r_vaddr[4];

  char r_symndx[4];

  char r_type[2];

};

#define RELOC struct external_reloc

#define RELSZ 10