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

/* ECOFF support on MIPS machines.
   coff/ecoff.h must be included before this file.  */

/********************** FILE HEADER **********************/

struct external_filehdr {
  unsigned char f_magic[2];	/* magic number			*/
  unsigned char f_nscns[2];	/* number of sections		*/
  unsigned char f_timdat[4];	/* time & date stamp		*/
  unsigned char f_symptr[4];	/* file pointer to symtab	*/
  unsigned char f_nsyms[4];	/* number of symtab entries	*/
  unsigned char f_opthdr[2];	/* sizeof(optional hdr)		*/
  unsigned char f_flags[2];	/* flags			*/
};

/* Magic numbers are defined in coff/ecoff.h.  */
#define MIPS_ECOFF_BADMAG(x) (((x).f_magic!=MIPS_MAGIC_1) && \
			      ((x).f_magic!=MIPS_MAGIC_LITTLE) &&\
			      ((x).f_magic!=MIPS_MAGIC_BIG) && \
			      ((x).f_magic!=MIPS_MAGIC_LITTLE2) && \
			      ((x).f_magic!=MIPS_MAGIC_BIG2) && \
			      ((x).f_magic!=MIPS_MAGIC_LITTLE3) && \
			      ((x).f_magic!=MIPS_MAGIC_BIG3))

#define	FILHDR	struct external_filehdr
#define	FILHSZ	20

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


typedef struct external_aouthdr
{
  unsigned char magic[2];	/* type of file				*/
  unsigned char	vstamp[2];	/* version stamp			*/
  unsigned char	tsize[4];	/* text size in bytes, padded to FW bdry*/
  unsigned char	dsize[4];	/* initialized data "  "		*/
  unsigned char	bsize[4];	/* uninitialized data "   "		*/
  unsigned char	entry[4];	/* entry pt.				*/
  unsigned char text_start[4];	/* base of text used for this file */
  unsigned char data_start[4];	/* base of data used for this file */
  unsigned char bss_start[4];	/* base of bss used for this file */
  unsigned char gprmask[4];	/* ?? */
  unsigned char cprmask[4][4];	/* ?? */
  unsigned char gp_value[4];	/* value for gp register */
} AOUTHDR;

/* compute size of a header */

#define AOUTSZ (sizeof(AOUTHDR))

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

struct external_scnhdr {
  unsigned char	s_name[8];	/* section name			*/
  unsigned char	s_paddr[4];	/* physical address, aliased s_nlib */
  unsigned char	s_vaddr[4];	/* virtual address		*/
  unsigned char	s_size[4];	/* section size			*/
  unsigned char	s_scnptr[4];	/* file ptr to raw data for section */
  unsigned char	s_relptr[4];	/* file ptr to relocation	*/
  unsigned char	s_lnnoptr[4];	/* file ptr to line numbers	*/
  unsigned char	s_nreloc[2];	/* number of relocation entries	*/
  unsigned char	s_nlnno[2];	/* number of line number entries*/
  unsigned char	s_flags[4];	/* flags			*/
};

#define	SCNHDR	struct external_scnhdr
#define	SCNHSZ	sizeof(SCNHDR)

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

struct external_reloc {
  unsigned char r_vaddr[4];
  unsigned char r_bits[4];
};

#define RELOC struct external_reloc
#define RELSZ 8

/* MIPS ECOFF uses a packed 8 byte format for relocs.  These constants
   are used to unpack the r_bits field.  */

#define RELOC_BITS0_SYMNDX_SH_LEFT_BIG		16
#define RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE	0

#define RELOC_BITS1_SYMNDX_SH_LEFT_BIG		8
#define RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE	8

#define RELOC_BITS2_SYMNDX_SH_LEFT_BIG		0
#define RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE	16

#define RELOC_BITS3_TYPE_BIG			0x1E
#define RELOC_BITS3_TYPE_SH_BIG			1
#define RELOC_BITS3_TYPE_LITTLE			0x78
#define RELOC_BITS3_TYPE_SH_LITTLE		3

#define RELOC_BITS3_EXTERN_BIG			0x01
#define RELOC_BITS3_EXTERN_LITTLE		0x80

/* The r_type field in a reloc is one of the following values.  I
   don't know if any other values can appear.  These seem to be all
   that occur in the Ultrix 4.2 libraries.  */
#define MIPS_R_IGNORE	0
#define MIPS_R_REFHALF	1
#define MIPS_R_REFWORD	2
#define MIPS_R_JMPADDR	3
#define MIPS_R_REFHI	4
#define MIPS_R_REFLO	5
#define MIPS_R_GPREL	6
#define MIPS_R_LITERAL	7

/* This reloc type is a Cygnus extension used when generating position
   independent code for embedded systems.  */
#define MIPS_R_PCREL16	8

/* This reloc type is a Cygnus extension used when generating position
   independent code for embedded systems.  It is used for an entry in
   a switch table, which looks like this:
     .switch $L3-$LS12
   The object file will contain the correct difference, and does not
   require adjustment.  However, when the linker is relaxing PC
   relative calls, it is possible for $L3 to move farther away.  This
   reloc always appears in the .text section, and is always against
   the .text section.  However, the symbol index is not
   RELOC_SECTION_TEXT.  It is, instead, the distance between this
   switch table entry and $LS12.  Thus, the original value of $L12 is
     vaddr - symndx
   and the original value of $L3 is
     vaddr - symndx + addend
   where addend is the value in the object file.  Knowing this, the
   linker can know whether the addend in the object file must be
   adjusted.  */
#define MIPS_R_SWITCH	9

/********************** STABS **********************/

#define MIPS_IS_STAB ECOFF_IS_STAB
#define MIPS_MARK_STAB ECOFF_MARK_STAB
#define MIPS_UNMARK_STAB ECOFF_UNMARK_STAB

#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

/********************** SYMBOLIC INFORMATION **********************/

/* Written by John Gilmore.  */

/* ECOFF uses COFF-like section structures, but its own symbol format.
   This file defines the symbol format in fields whose size and alignment
   will not vary on different host systems.  */

/* File header as a set of bytes */

struct hdr_ext {
	unsigned char 	h_magic[2];
	unsigned char	h_vstamp[2];
	unsigned char	h_ilineMax[4];
	unsigned char	h_cbLine[4];
	unsigned char	h_cbLineOffset[4];
	unsigned char	h_idnMax[4];
	unsigned char	h_cbDnOffset[4];
	unsigned char	h_ipdMax[4];
	unsigned char	h_cbPdOffset[4];
	unsigned char	h_isymMax[4];
	unsigned char	h_cbSymOffset[4];
	unsigned char	h_ioptMax[4];
	unsigned char	h_cbOptOffset[4];
	unsigned char	h_iauxMax[4];
	unsigned char	h_cbAuxOffset[4];
	unsigned char	h_issMax[4];
	unsigned char	h_cbSsOffset[4];
	unsigned char	h_issExtMax[4];
	unsigned char	h_cbSsExtOffset[4];
	unsigned char	h_ifdMax[4];
	unsigned char	h_cbFdOffset[4];
	unsigned char	h_crfd[4];
	unsigned char	h_cbRfdOffset[4];
	unsigned char	h_iextMax[4];
	unsigned char	h_cbExtOffset[4];
};

/* File descriptor external record */

struct fdr_ext {
	unsigned char	f_adr[4];
	unsigned char	f_rss[4];
	unsigned char	f_issBase[4];
	unsigned char	f_cbSs[4];
	unsigned char	f_isymBase[4];
	unsigned char	f_csym[4];
	unsigned char	f_ilineBase[4];
	unsigned char	f_cline[4];
	unsigned char	f_ioptBase[4];
	unsigned char	f_copt[4];
	unsigned char	f_ipdFirst[2];
	unsigned char	f_cpd[2];
	unsigned char	f_iauxBase[4];
	unsigned char	f_caux[4];
	unsigned char	f_rfdBase[4];
	unsigned char	f_crfd[4];
	unsigned char	f_bits1[1];
	unsigned char	f_bits2[3];
	unsigned char	f_cbLineOffset[4];
	unsigned char	f_cbLine[4];
};

#define	FDR_BITS1_LANG_BIG		0xF8
#define	FDR_BITS1_LANG_SH_BIG		3
#define	FDR_BITS1_LANG_LITTLE		0x1F
#define	FDR_BITS1_LANG_SH_LITTLE	0

#define	FDR_BITS1_FMERGE_BIG		0x04
#define	FDR_BITS1_FMERGE_LITTLE		0x20

#define	FDR_BITS1_FREADIN_BIG		0x02
#define	FDR_BITS1_FREADIN_LITTLE	0x40

#define	FDR_BITS1_FBIGENDIAN_BIG	0x01
#define	FDR_BITS1_FBIGENDIAN_LITTLE	0x80

#define	FDR_BITS2_GLEVEL_BIG		0xC0
#define	FDR_BITS2_GLEVEL_SH_BIG		6
#define	FDR_BITS2_GLEVEL_LITTLE		0x03
#define	FDR_BITS2_GLEVEL_SH_LITTLE	0

/* We ignore the `reserved' field in bits2. */

/* Procedure descriptor external record */

struct pdr_ext {
	unsigned char	p_adr[4];
	unsigned char	p_isym[4];
	unsigned char	p_iline[4];
	unsigned char	p_regmask[4];
	unsigned char	p_regoffset[4];
	unsigned char	p_iopt[4];
	unsigned char	p_fregmask[4];
	unsigned char	p_fregoffset[4];
	unsigned char	p_frameoffset[4];
	unsigned char	p_framereg[2];
	unsigned char	p_pcreg[2];
	unsigned char	p_lnLow[4];
	unsigned char	p_lnHigh[4];
	unsigned char	p_cbLineOffset[4];
};

/* Line numbers */

struct line_ext {
	unsigned char	l_line[4];
};

/* Symbol external record */

struct sym_ext {
	unsigned char	s_iss[4];
	unsigned char	s_value[4];
	unsigned char	s_bits1[1];
	unsigned char	s_bits2[1];
	unsigned char	s_bits3[1];
	unsigned char	s_bits4[1];
};

#define	SYM_BITS1_ST_BIG		0xFC
#define	SYM_BITS1_ST_SH_BIG		2
#define	SYM_BITS1_ST_LITTLE		0x3F
#define	SYM_BITS1_ST_SH_LITTLE		0

#define	SYM_BITS1_SC_BIG		0x03
#define	SYM_BITS1_SC_SH_LEFT_BIG	3
#define	SYM_BITS1_SC_LITTLE		0xC0
#define	SYM_BITS1_SC_SH_LITTLE		6

#define	SYM_BITS2_SC_BIG		0xE0
#define	SYM_BITS2_SC_SH_BIG		5
#define	SYM_BITS2_SC_LITTLE		0x07
#define	SYM_BITS2_SC_SH_LEFT_LITTLE	2

#define	SYM_BITS2_RESERVED_BIG		0x10
#define	SYM_BITS2_RESERVED_LITTLE	0x08

#define	SYM_BITS2_INDEX_BIG		0x0F
#define	SYM_BITS2_INDEX_SH_LEFT_BIG	16
#define	SYM_BITS2_INDEX_LITTLE		0xF0
#define	SYM_BITS2_INDEX_SH_LITTLE	4

#define	SYM_BITS3_INDEX_SH_LEFT_BIG	8
#define	SYM_BITS3_INDEX_SH_LEFT_LITTLE	4

#define	SYM_BITS4_INDEX_SH_LEFT_BIG	0
#define	SYM_BITS4_INDEX_SH_LEFT_LITTLE	12

/* External symbol external record */

struct ext_ext {
	unsigned char	es_bits1[1];
	unsigned char	es_bits2[1];
	unsigned char	es_ifd[2];
	struct	sym_ext es_asym;
};

#define	EXT_BITS1_JMPTBL_BIG		0x80
#define	EXT_BITS1_JMPTBL_LITTLE		0x01

#define	EXT_BITS1_COBOL_MAIN_BIG	0x40
#define	EXT_BITS1_COBOL_MAIN_LITTLE	0x02

#define	EXT_BITS1_WEAKEXT_BIG		0x20
#define	EXT_BITS1_WEAKEXT_LITTLE	0x04

/* Dense numbers external record */

struct dnr_ext {
	unsigned char	d_rfd[4];
	unsigned char	d_index[4];
};

/* Relative file descriptor */

struct rfd_ext {
  unsigned char	rfd[4];
};

/* Optimizer symbol external record */

struct opt_ext {
  unsigned char o_bits1[1];
  unsigned char o_bits2[1];
  unsigned char o_bits3[1];
  unsigned char o_bits4[1];
  struct rndx_ext o_rndx;
  unsigned char o_offset[4];
};

#define OPT_BITS2_VALUE_SH_LEFT_BIG	16
#define OPT_BITS2_VALUE_SH_LEFT_LITTLE	0

#define OPT_BITS3_VALUE_SH_LEFT_BIG	8
#define OPT_BITS3_VALUE_SH_LEFT_LITTLE	8

#define OPT_BITS4_VALUE_SH_LEFT_BIG	0
#define OPT_BITS4_VALUE_SH_LEFT_LITTLE	16
Commit	Line	Data
f268681b ILT	1	/* ECOFF support on MIPS machines.
f268681b ILT	2	coff/ecoff.h must be included before this file. */
57115f09 ILT	3
	4	/******************** FILE HEADER ********************/
	5
	6	struct external_filehdr {
	7	unsigned char f_magic[2]; /* magic number */
	8	unsigned char f_nscns[2]; /* number of sections */
	9	unsigned char f_timdat[4]; /* time & date stamp */
	10	unsigned char f_symptr[4]; /* file pointer to symtab */
	11	unsigned char f_nsyms[4]; /* number of symtab entries */
	12	unsigned char f_opthdr[2]; /* sizeof(optional hdr) */
	13	unsigned char f_flags[2]; /* flags */
	14	};
	15
f268681b ILT	16	/* Magic numbers are defined in coff/ecoff.h. */
	17	#define MIPS_ECOFF_BADMAG(x) (((x).f_magic!=MIPS_MAGIC_1) && \
	18	((x).f_magic!=MIPS_MAGIC_LITTLE) &&\
	19	((x).f_magic!=MIPS_MAGIC_BIG) && \
	20	((x).f_magic!=MIPS_MAGIC_LITTLE2) && \
	21	((x).f_magic!=MIPS_MAGIC_BIG2) && \
	22	((x).f_magic!=MIPS_MAGIC_LITTLE3) && \
	23	((x).f_magic!=MIPS_MAGIC_BIG3))
57115f09 ILT	24
	25	#define FILHDR struct external_filehdr
	26	#define FILHSZ 20
	27
	28	/******************** AOUT "OPTIONAL HEADER" ********************/
	29
	30
	31	typedef struct external_aouthdr
	32	{
	33	unsigned char magic[2]; /* type of file */
	34	unsigned char vstamp[2]; /* version stamp */
	35	unsigned char tsize[4]; /* text size in bytes, padded to FW bdry*/
	36	unsigned char dsize[4]; /* initialized data " " */
	37	unsigned char bsize[4]; /* uninitialized data " " */
	38	unsigned char entry[4]; /* entry pt. */
	39	unsigned char text_start[4]; /* base of text used for this file */
	40	unsigned char data_start[4]; /* base of data used for this file */
a434bccf ILT	41	unsigned char bss_start[4]; /* base of bss used for this file */
	42	unsigned char gprmask[4]; /* ?? */
	43	unsigned char cprmask[4][4]; /* ?? */
	44	unsigned char gp_value[4]; /* value for gp register */
57115f09 ILT	45	} AOUTHDR;
	46
	47	/* compute size of a header */
	48
	49	#define AOUTSZ (sizeof(AOUTHDR))
	50
57115f09 ILT	51	/******************** SECTION HEADER ********************/
	52
	53	struct external_scnhdr {
	54	unsigned char s_name[8]; /* section name */
	55	unsigned char s_paddr[4]; /* physical address, aliased s_nlib */
	56	unsigned char s_vaddr[4]; /* virtual address */
	57	unsigned char s_size[4]; /* section size */
	58	unsigned char s_scnptr[4]; /* file ptr to raw data for section */
	59	unsigned char s_relptr[4]; /* file ptr to relocation */
	60	unsigned char s_lnnoptr[4]; /* file ptr to line numbers */
	61	unsigned char s_nreloc[2]; /* number of relocation entries */
	62	unsigned char s_nlnno[2]; /* number of line number entries*/
	63	unsigned char s_flags[4]; /* flags */
	64	};
	65
	66	#define SCNHDR struct external_scnhdr
	67	#define SCNHSZ sizeof(SCNHDR)
	68
57115f09 ILT	69	/******************** RELOCATION DIRECTIVES ********************/
	70
	71	struct external_reloc {
	72	unsigned char r_vaddr[4];
9dcfbb67	73	unsigned char r_bits[4];
57115f09 ILT	74	};
57115f09 ILT	75
a434bccf ILT	76	#define RELOC struct external_reloc
	77	#define RELSZ 8
	78
9dcfbb67	79	/* MIPS ECOFF uses a packed 8 byte format for relocs. These constants
a434bccf	80	are used to unpack the r_bits field. */
9dcfbb67 ILT	81
	82	#define RELOC_BITS0_SYMNDX_SH_LEFT_BIG 16
	83	#define RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE 0
	84
	85	#define RELOC_BITS1_SYMNDX_SH_LEFT_BIG 8
	86	#define RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE 8
	87
	88	#define RELOC_BITS2_SYMNDX_SH_LEFT_BIG 0
	89	#define RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE 16
	90
a434bccf ILT	91	#define RELOC_BITS3_TYPE_BIG 0x1E
a434bccf ILT	92	#define RELOC_BITS3_TYPE_SH_BIG 1
9dcfbb67 ILT	93	#define RELOC_BITS3_TYPE_LITTLE 0x78
	94	#define RELOC_BITS3_TYPE_SH_LITTLE 3
	95
	96	#define RELOC_BITS3_EXTERN_BIG 0x01
	97	#define RELOC_BITS3_EXTERN_LITTLE 0x80
	98
f268681b ILT	99	/* The r_type field in a reloc is one of the following values. I
	100	don't know if any other values can appear. These seem to be all
	101	that occur in the Ultrix 4.2 libraries. */
	102	#define MIPS_R_IGNORE 0
	103	#define MIPS_R_REFHALF 1
	104	#define MIPS_R_REFWORD 2
	105	#define MIPS_R_JMPADDR 3
	106	#define MIPS_R_REFHI 4
	107	#define MIPS_R_REFLO 5
	108	#define MIPS_R_GPREL 6
	109	#define MIPS_R_LITERAL 7
	110
	111	/* This reloc type is a Cygnus extension used when generating position
	112	independent code for embedded systems. */
	113	#define MIPS_R_PCREL16 8
	114
	115	/* This reloc type is a Cygnus extension used when generating position
	116	independent code for embedded systems. It is used for an entry in
	117	a switch table, which looks like this:
	118	.switch $L3-$LS12
	119	The object file will contain the correct difference, and does not
	120	require adjustment. However, when the linker is relaxing PC
	121	relative calls, it is possible for $L3 to move farther away. This
	122	reloc always appears in the .text section, and is always against
	123	the .text section. However, the symbol index is not
	124	RELOC_SECTION_TEXT. It is, instead, the distance between this
	125	switch table entry and $LS12. Thus, the original value of $L12 is
	126	vaddr - symndx
	127	and the original value of $L3 is
	128	vaddr - symndx + addend
	129	where addend is the value in the object file. Knowing this, the
	130	linker can know whether the addend in the object file must be
	131	adjusted. */
	132	#define MIPS_R_SWITCH 9
a434bccf ILT	133
a434bccf ILT	134	/******************** STABS ********************/
57115f09	135
f268681b ILT	136	#define MIPS_IS_STAB ECOFF_IS_STAB
	137	#define MIPS_MARK_STAB ECOFF_MARK_STAB
	138	#define MIPS_UNMARK_STAB ECOFF_UNMARK_STAB
	139
	140	#define DEFAULT_DATA_SECTION_ALIGNMENT 4
	141	#define DEFAULT_BSS_SECTION_ALIGNMENT 4
	142	#define DEFAULT_TEXT_SECTION_ALIGNMENT 16
	143	/* For new sections we havn't heard of before */
	144	#define DEFAULT_SECTION_ALIGNMENT 4
	145
	146	/******************** SYMBOLIC INFORMATION ********************/
	147
	148	/* Written by John Gilmore. */
	149
	150	/* ECOFF uses COFF-like section structures, but its own symbol format.
	151	This file defines the symbol format in fields whose size and alignment
	152	will not vary on different host systems. */
	153
	154	/* File header as a set of bytes */
	155
	156	struct hdr_ext {
	157	unsigned char h_magic[2];
	158	unsigned char h_vstamp[2];
	159	unsigned char h_ilineMax[4];
	160	unsigned char h_cbLine[4];
	161	unsigned char h_cbLineOffset[4];
	162	unsigned char h_idnMax[4];
	163	unsigned char h_cbDnOffset[4];
	164	unsigned char h_ipdMax[4];
	165	unsigned char h_cbPdOffset[4];
	166	unsigned char h_isymMax[4];
	167	unsigned char h_cbSymOffset[4];
	168	unsigned char h_ioptMax[4];
	169	unsigned char h_cbOptOffset[4];
	170	unsigned char h_iauxMax[4];
	171	unsigned char h_cbAuxOffset[4];
	172	unsigned char h_issMax[4];
	173	unsigned char h_cbSsOffset[4];
	174	unsigned char h_issExtMax[4];
	175	unsigned char h_cbSsExtOffset[4];
	176	unsigned char h_ifdMax[4];
	177	unsigned char h_cbFdOffset[4];
	178	unsigned char h_crfd[4];
	179	unsigned char h_cbRfdOffset[4];
	180	unsigned char h_iextMax[4];
	181	unsigned char h_cbExtOffset[4];
	182	};
	183
	184	/* File descriptor external record */
	185
	186	struct fdr_ext {
	187	unsigned char f_adr[4];
	188	unsigned char f_rss[4];
	189	unsigned char f_issBase[4];
	190	unsigned char f_cbSs[4];
	191	unsigned char f_isymBase[4];
	192	unsigned char f_csym[4];
	193	unsigned char f_ilineBase[4];
	194	unsigned char f_cline[4];
	195	unsigned char f_ioptBase[4];
	196	unsigned char f_copt[4];
	197	unsigned char f_ipdFirst[2];
	198	unsigned char f_cpd[2];
	199	unsigned char f_iauxBase[4];
200	unsigned char f_caux[4];
201	unsigned char f_rfdBase[4];
202	unsigned char f_crfd[4];
203	unsigned char f_bits1[1];
204	unsigned char f_bits2[3];
205	unsigned char f_cbLineOffset[4];
206	unsigned char f_cbLine[4];
207	};
208
209	#define FDR_BITS1_LANG_BIG 0xF8
210	#define FDR_BITS1_LANG_SH_BIG 3
211	#define FDR_BITS1_LANG_LITTLE 0x1F
212	#define FDR_BITS1_LANG_SH_LITTLE 0
213
214	#define FDR_BITS1_FMERGE_BIG 0x04
215	#define FDR_BITS1_FMERGE_LITTLE 0x20
216
217	#define FDR_BITS1_FREADIN_BIG 0x02
218	#define FDR_BITS1_FREADIN_LITTLE 0x40
219
220	#define FDR_BITS1_FBIGENDIAN_BIG 0x01
221	#define FDR_BITS1_FBIGENDIAN_LITTLE 0x80
222
223	#define FDR_BITS2_GLEVEL_BIG 0xC0
224	#define FDR_BITS2_GLEVEL_SH_BIG 6
225	#define FDR_BITS2_GLEVEL_LITTLE 0x03
226	#define FDR_BITS2_GLEVEL_SH_LITTLE 0
227
228	/* We ignore the `reserved' field in bits2. */
229
230	/* Procedure descriptor external record */
231
232	struct pdr_ext {
233	unsigned char p_adr[4];
234	unsigned char p_isym[4];
235	unsigned char p_iline[4];
236	unsigned char p_regmask[4];
237	unsigned char p_regoffset[4];
238	unsigned char p_iopt[4];
239	unsigned char p_fregmask[4];
240	unsigned char p_fregoffset[4];
241	unsigned char p_frameoffset[4];
242	unsigned char p_framereg[2];
243	unsigned char p_pcreg[2];
244	unsigned char p_lnLow[4];
245	unsigned char p_lnHigh[4];
246	unsigned char p_cbLineOffset[4];
247	};
248
249	/* Line numbers */
250
251	struct line_ext {
252	unsigned char l_line[4];
253	};
254
255	/* Symbol external record */
256
257	struct sym_ext {
258	unsigned char s_iss[4];
259	unsigned char s_value[4];
260	unsigned char s_bits1[1];
261	unsigned char s_bits2[1];
262	unsigned char s_bits3[1];
263	unsigned char s_bits4[1];
264	};
265
266	#define SYM_BITS1_ST_BIG 0xFC
267	#define SYM_BITS1_ST_SH_BIG 2
268	#define SYM_BITS1_ST_LITTLE 0x3F
269	#define SYM_BITS1_ST_SH_LITTLE 0
270
271	#define SYM_BITS1_SC_BIG 0x03
272	#define SYM_BITS1_SC_SH_LEFT_BIG 3
273	#define SYM_BITS1_SC_LITTLE 0xC0
274	#define SYM_BITS1_SC_SH_LITTLE 6
275
276	#define SYM_BITS2_SC_BIG 0xE0
277	#define SYM_BITS2_SC_SH_BIG 5
278	#define SYM_BITS2_SC_LITTLE 0x07
279	#define SYM_BITS2_SC_SH_LEFT_LITTLE 2
280
281	#define SYM_BITS2_RESERVED_BIG 0x10
282	#define SYM_BITS2_RESERVED_LITTLE 0x08
283
284	#define SYM_BITS2_INDEX_BIG 0x0F
285	#define SYM_BITS2_INDEX_SH_LEFT_BIG 16
286	#define SYM_BITS2_INDEX_LITTLE 0xF0
287	#define SYM_BITS2_INDEX_SH_LITTLE 4
288
289	#define SYM_BITS3_INDEX_SH_LEFT_BIG 8
290	#define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4
291
292	#define SYM_BITS4_INDEX_SH_LEFT_BIG 0
293	#define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12
294
295	/* External symbol external record */
296
297	struct ext_ext {
298	unsigned char es_bits1[1];
299	unsigned char es_bits2[1];
300	unsigned char es_ifd[2];
301	struct sym_ext es_asym;
302	};
303
304	#define EXT_BITS1_JMPTBL_BIG 0x80
305	#define EXT_BITS1_JMPTBL_LITTLE 0x01
306
307	#define EXT_BITS1_COBOL_MAIN_BIG 0x40
308	#define EXT_BITS1_COBOL_MAIN_LITTLE 0x02
309
310	#define EXT_BITS1_WEAKEXT_BIG 0x20
311	#define EXT_BITS1_WEAKEXT_LITTLE 0x04
312
313	/* Dense numbers external record */
314
315	struct dnr_ext {
316	unsigned char d_rfd[4];
317	unsigned char d_index[4];
318	};
319
320	/* Relative file descriptor */
321
322	struct rfd_ext {
323	unsigned char rfd[4];
324	};
325
326	/* Optimizer symbol external record */
327
328	struct opt_ext {
329	unsigned char o_bits1[1];
330	unsigned char o_bits2[1];
331	unsigned char o_bits3[1];
332	unsigned char o_bits4[1];
333	struct rndx_ext o_rndx;
334	unsigned char o_offset[4];
335	};
336
337	#define OPT_BITS2_VALUE_SH_LEFT_BIG 16
338	#define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0
339
340	#define OPT_BITS3_VALUE_SH_LEFT_BIG 8
341	#define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8
342
343	#define OPT_BITS4_VALUE_SH_LEFT_BIG 0
344	#define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16