[binutils.git] / include / coff-mips.h

/* Rudimentary ECOFF support on MIPS machines. 
   This lacks symbol information, normally provided on MIPS Unix systems
   in the files <sym.h> and <symconst.h>.  */

/********************** 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			*/
};


/* Mips magics */
#define MIPS_MAGIC_1 0x0180
#define MIPS_MAGIC_2 0x0162
#define MIPS_MAGIC_3 0x0160

#define ECOFFBADMAG(x) (((x).f_magic!=MIPS_MAGIC_1) && \
			((x).f_magic!=MIPS_MAGIC_2) &&\
			((x).f_magic!=MIPS_MAGIC_3))


#define	FILHDR	struct external_filehdr
#define	FILHSZ	20

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


typedef struct external_aouthdr
{
  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;

/* compute size of a header */

#define AOUTSZ (sizeof(AOUTHDR))


/********************** 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	sizeof(SCNHDR)

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

#define DEFAULT_DATA_SECTION_ALIGNMENT 4
#define DEFAULT_BSS_SECTION_ALIGNMENT 4
#define DEFAULT_TEXT_SECTION_ALIGNMENT 16
/* For new sections we havn't heard of before */
#define DEFAULT_SECTION_ALIGNMENT 4

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

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


/* Relevent values for r_type and ecoff.  Would someone please document them */

#define RELOC struct external_reloc
#define RELSZ 12
Commit	Line	Data
095c7223 JG	1	/* Rudimentary ECOFF support on MIPS machines.
	2	This lacks symbol information, normally provided on MIPS Unix systems
	3	in the files <sym.h> and <symconst.h>. */
d7344eca JG	4
	5	/******************** FILE HEADER ********************/
	6
ea017097 SC	7	struct external_filehdr {
	8	char f_magic[2]; /* magic number */
	9	char f_nscns[2]; /* number of sections */
	10	char f_timdat[4]; /* time & date stamp */
	11	char f_symptr[4]; /* file pointer to symtab */
	12	char f_nsyms[4]; /* number of symtab entries */
	13	char f_opthdr[2]; /* sizeof(optional hdr) */
	14	char f_flags[2]; /* flags */
d7344eca JG	15	};
d7344eca JG	16
d7344eca	17
ea017097 SC	18	/* Mips magics */
	19	#define MIPS_MAGIC_1 0x0180
	20	#define MIPS_MAGIC_2 0x0162
	21	#define MIPS_MAGIC_3 0x0160
d7344eca	22
ea017097 SC	23	#define ECOFFBADMAG(x) (((x).f_magic!=MIPS_MAGIC_1) && \
	24	((x).f_magic!=MIPS_MAGIC_2) &&\
	25	((x).f_magic!=MIPS_MAGIC_3))
d7344eca	26
d7344eca	27
ea017097 SC	28	#define FILHDR struct external_filehdr
ea017097 SC	29	#define FILHSZ 20
d7344eca JG	30
	31	/******************** AOUT "OPTIONAL HEADER" ********************/
	32
ea017097	33
2886a9a9	34	typedef struct external_aouthdr
ea017097 SC	35	{
	36	char magic[2]; /* type of file */
	37	char vstamp[2]; /* version stamp */
	38	char tsize[4]; /* text size in bytes, padded to FW bdry*/
	39	char dsize[4]; /* initialized data " " */
	40	char bsize[4]; /* uninitialized data " " */
	41	char entry[4]; /* entry pt. */
	42	char text_start[4]; /* base of text used for this file */
	43	char data_start[4]; /* base of data used for this file */
d7344eca JG	44	} AOUTHDR;
d7344eca JG	45
d7344eca JG	46	/* compute size of a header */
d7344eca JG	47
d7344eca JG	48	#define AOUTSZ (sizeof(AOUTHDR))
	49
	50
ea017097	51	/******************** SECTION HEADER ********************/
d7344eca	52
ea017097 SC	53	struct external_scnhdr {
	54	char s_name[8]; /* section name */
	55	char s_paddr[4]; /* physical address, aliased s_nlib */
	56	char s_vaddr[4]; /* virtual address */
	57	char s_size[4]; /* section size */
	58	char s_scnptr[4]; /* file ptr to raw data for section */
	59	char s_relptr[4]; /* file ptr to relocation */
	60	char s_lnnoptr[4]; /* file ptr to line numbers */
	61	char s_nreloc[2]; /* number of relocation entries */
	62	char s_nlnno[2]; /* number of line number entries*/
	63	char s_flags[4]; /* flags */
	64	};
	65
	66	#define SCNHDR struct external_scnhdr
d7344eca JG	67	#define SCNHSZ sizeof(SCNHDR)
d7344eca JG	68
bc7d7419 JG	69	/*
	70	* names of "special" sections
	71	*/
	72	#define _TEXT ".text"
	73	#define _DATA ".data"
	74	#define _BSS ".bss"
	75
d7344eca JG	76	#define DEFAULT_DATA_SECTION_ALIGNMENT 4
	77	#define DEFAULT_BSS_SECTION_ALIGNMENT 4
	78	#define DEFAULT_TEXT_SECTION_ALIGNMENT 16
	79	/* For new sections we havn't heard of before */
	80	#define DEFAULT_SECTION_ALIGNMENT 4
50651e5e JG	81
	82	/******************** RELOCATION DIRECTIVES ********************/
	83
	84	struct external_reloc {
	85	char r_vaddr[4];
	86	char r_symndx[4];
	87	char r_type[2];
	88	char pad[2];
	89	};
	90
	91
	92	/* Relevent values for r_type and ecoff. Would someone please document them */
	93
	94	#define RELOC struct external_reloc
	95	#define RELSZ 12