/*** coff information for Texas Instruments TMS320C3X */

/********************** 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	TIC30MAGIC	0xC000

#define TIC30BADMAG(x) (((x).f_magic!=TIC30MAGIC))

#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 */
}
AOUTHDR;


#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[4];	/* flags			*/
};

/*
 * names of "special" sections
 */
#define _TEXT	".text"
#define _DATA	".data"
#define _BSS	".bss"


#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[4];	/* line number		*/
};

#define GET_LINENO_LNNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) (ext->l_lnno));
#define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_32(abfd,val,  (bfd_byte *) (ext->l_lnno));

#define	LINENO	struct external_lineno
#define	LINESZ	8


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

/* The external reloc has an offset field, because some of the reloc
   types on the z8k don't have room in the instruction for the entire
   offset - eg with segments */

struct external_reloc {
  char r_vaddr[4];
  char r_symndx[4];
  char r_offset[4];
  char r_type[2];
  char r_stuff[2];
};


#define RELOC struct external_reloc
#define RELSZ 16

/* TMS320C30 relocation types.  */

#define R_TIC30_ABS16 0x100  /* 16 bit absolute. */
#define R_TIC30_ABS24 0x101  /* 24 bit absolute. */
#define R_TIC30_ABS32 0x102  /* 32 bit absolute. */
#define R_TIC30_LDP   0x103  /* LDP bits 23-16 to 7-0. */
#define R_TIC30_PC16  0x104  /* 16 bit pc relative. */