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

/* ECOFF support on MIPS machines.
   coff/ecoff.h must be included before this file.
   
   Copyright 1999, 2004 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */

#define DO_NOT_DEFINE_AOUTHDR
#define L_LNNO_SIZE 4
#include "coff/external.h"

/* 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))


/********************** 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 56
#define AOUTHDRSZ 56

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

/* Originally, ECOFF used four bits for the reloc type and had three
   reserved bits.  Irix 4 added another bit for the reloc type, which
   was easy because it was big endian and one of the spare bits became
   the new most significant bit.  To make this also work for little
   endian ECOFF, we need to wrap one of the reserved bits around to
   become the most significant bit of the reloc type.  */
#define RELOC_BITS3_TYPE_BIG			0x3E
#define RELOC_BITS3_TYPE_SH_BIG			1
#define RELOC_BITS3_TYPE_LITTLE			0x78
#define RELOC_BITS3_TYPE_SH_LITTLE		3
#define RELOC_BITS3_TYPEHI_LITTLE		0x04
#define RELOC_BITS3_TYPEHI_SH_LITTLE		2

#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

/* FIXME: This relocation is used (internally only) to represent branches
   when assembling.  It should never appear in output files, and  
   be removed.  (It used to be used for embedded-PIC support.)  */
#define MIPS_R_PCREL16	12

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

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

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

/* Runtime procedure table */

struct rpdr_ext
{
	unsigned char	p_adr[4];
	unsigned char	p_regmask[4];
	unsigned char	p_regoffset[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_irpss[4];
	unsigned char	p_reserved[4];
	unsigned char	p_exception_info[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
252b5132	1	/* ECOFF support on MIPS machines.
4f1d9bd8 NC	2	coff/ecoff.h must be included before this file.
4f1d9bd8 NC	3
c3aa17e9	4	Copyright 1999, 2004 Free Software Foundation, Inc.
4f1d9bd8 NC	5
	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2 of the License, or
	9	(at your option) any later version.
	10
	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software
e172dbf8	18	Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
4f1d9bd8 NC	19
	20	#define DO_NOT_DEFINE_AOUTHDR
	21	#define L_LNNO_SIZE 4
	22	#include "coff/external.h"
252b5132 RH	23
	24	/* Magic numbers are defined in coff/ecoff.h. */
	25	#define MIPS_ECOFF_BADMAG(x) (((x).f_magic!=MIPS_MAGIC_1) && \
	26	((x).f_magic!=MIPS_MAGIC_LITTLE) &&\
	27	((x).f_magic!=MIPS_MAGIC_BIG) && \
	28	((x).f_magic!=MIPS_MAGIC_LITTLE2) && \
	29	((x).f_magic!=MIPS_MAGIC_BIG2) && \
	30	((x).f_magic!=MIPS_MAGIC_LITTLE3) && \
	31	((x).f_magic!=MIPS_MAGIC_BIG3))
	32
252b5132 RH	33
	34	/******************** AOUT "OPTIONAL HEADER" ********************/
	35
252b5132 RH	36	typedef struct external_aouthdr
	37	{
	38	unsigned char magic[2]; /* type of file */
	39	unsigned char vstamp[2]; /* version stamp */
	40	unsigned char tsize[4]; /* text size in bytes, padded to FW bdry*/
	41	unsigned char dsize[4]; /* initialized data " " */
	42	unsigned char bsize[4]; /* uninitialized data " " */
	43	unsigned char entry[4]; /* entry pt. */
	44	unsigned char text_start[4]; /* base of text used for this file */
	45	unsigned char data_start[4]; /* base of data used for this file */
	46	unsigned char bss_start[4]; /* base of bss used for this file */
	47	unsigned char gprmask[4]; /* ?? */
	48	unsigned char cprmask[4][4]; /* ?? */
	49	unsigned char gp_value[4]; /* value for gp register */
	50	} AOUTHDR;
	51
	52	/* compute size of a header */
	53
	54	#define AOUTSZ 56
	55	#define AOUTHDRSZ 56
	56
252b5132 RH	57	/******************** RELOCATION DIRECTIVES ********************/
252b5132 RH	58
4f1d9bd8 NC	59	struct external_reloc
	60	{
	61	unsigned char r_vaddr[4];
	62	unsigned char r_bits[4];
	63	};
252b5132 RH	64
	65	#define RELOC struct external_reloc
	66	#define RELSZ 8
	67
	68	/* MIPS ECOFF uses a packed 8 byte format for relocs. These constants
	69	are used to unpack the r_bits field. */
	70
	71	#define RELOC_BITS0_SYMNDX_SH_LEFT_BIG 16
	72	#define RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE 0
	73
	74	#define RELOC_BITS1_SYMNDX_SH_LEFT_BIG 8
	75	#define RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE 8
	76
	77	#define RELOC_BITS2_SYMNDX_SH_LEFT_BIG 0
	78	#define RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE 16
	79
	80	/* Originally, ECOFF used four bits for the reloc type and had three
	81	reserved bits. Irix 4 added another bit for the reloc type, which
	82	was easy because it was big endian and one of the spare bits became
	83	the new most significant bit. To make this also work for little
	84	endian ECOFF, we need to wrap one of the reserved bits around to
	85	become the most significant bit of the reloc type. */
	86	#define RELOC_BITS3_TYPE_BIG 0x3E
	87	#define RELOC_BITS3_TYPE_SH_BIG 1
	88	#define RELOC_BITS3_TYPE_LITTLE 0x78
	89	#define RELOC_BITS3_TYPE_SH_LITTLE 3
	90	#define RELOC_BITS3_TYPEHI_LITTLE 0x04
	91	#define RELOC_BITS3_TYPEHI_SH_LITTLE 2
	92
	93	#define RELOC_BITS3_EXTERN_BIG 0x01
	94	#define RELOC_BITS3_EXTERN_LITTLE 0x80
	95
	96	/* The r_type field in a reloc is one of the following values. I
	97	don't know if any other values can appear. These seem to be all
	98	that occur in the Ultrix 4.2 libraries. */
	99	#define MIPS_R_IGNORE 0
	100	#define MIPS_R_REFHALF 1
	101	#define MIPS_R_REFWORD 2
	102	#define MIPS_R_JMPADDR 3
	103	#define MIPS_R_REFHI 4
	104	#define MIPS_R_REFLO 5
	105	#define MIPS_R_GPREL 6
	106	#define MIPS_R_LITERAL 7
	107
3e27568f CD	108	/* FIXME: This relocation is used (internally only) to represent branches
	109	when assembling. It should never appear in output files, and
	110	be removed. (It used to be used for embedded-PIC support.) */
252b5132	111	#define MIPS_R_PCREL16 12
252b5132 RH	112
	113	/******************** STABS ********************/
	114
	115	#define MIPS_IS_STAB ECOFF_IS_STAB
	116	#define MIPS_MARK_STAB ECOFF_MARK_STAB
	117	#define MIPS_UNMARK_STAB ECOFF_UNMARK_STAB
	118
	119	/******************** SYMBOLIC INFORMATION ********************/
	120
	121	/* Written by John Gilmore. */
	122
	123	/* ECOFF uses COFF-like section structures, but its own symbol format.
	124	This file defines the symbol format in fields whose size and alignment
	125	will not vary on different host systems. */
	126
	127	/* File header as a set of bytes */
	128
4f1d9bd8 NC	129	struct hdr_ext
4f1d9bd8 NC	130	{
252b5132 RH	131	unsigned char h_magic[2];
	132	unsigned char h_vstamp[2];
	133	unsigned char h_ilineMax[4];
	134	unsigned char h_cbLine[4];
	135	unsigned char h_cbLineOffset[4];
	136	unsigned char h_idnMax[4];
	137	unsigned char h_cbDnOffset[4];
	138	unsigned char h_ipdMax[4];
	139	unsigned char h_cbPdOffset[4];
	140	unsigned char h_isymMax[4];
	141	unsigned char h_cbSymOffset[4];
	142	unsigned char h_ioptMax[4];
	143	unsigned char h_cbOptOffset[4];
	144	unsigned char h_iauxMax[4];
	145	unsigned char h_cbAuxOffset[4];
	146	unsigned char h_issMax[4];
	147	unsigned char h_cbSsOffset[4];
	148	unsigned char h_issExtMax[4];
	149	unsigned char h_cbSsExtOffset[4];
	150	unsigned char h_ifdMax[4];
	151	unsigned char h_cbFdOffset[4];
	152	unsigned char h_crfd[4];
	153	unsigned char h_cbRfdOffset[4];
	154	unsigned char h_iextMax[4];
	155	unsigned char h_cbExtOffset[4];
	156	};
	157
	158	/* File descriptor external record */
	159
4f1d9bd8 NC	160	struct fdr_ext
4f1d9bd8 NC	161	{
252b5132 RH	162	unsigned char f_adr[4];
	163	unsigned char f_rss[4];
	164	unsigned char f_issBase[4];
	165	unsigned char f_cbSs[4];
	166	unsigned char f_isymBase[4];
	167	unsigned char f_csym[4];
	168	unsigned char f_ilineBase[4];
	169	unsigned char f_cline[4];
	170	unsigned char f_ioptBase[4];
	171	unsigned char f_copt[4];
	172	unsigned char f_ipdFirst[2];
	173	unsigned char f_cpd[2];
	174	unsigned char f_iauxBase[4];
	175	unsigned char f_caux[4];
	176	unsigned char f_rfdBase[4];
	177	unsigned char f_crfd[4];
	178	unsigned char f_bits1[1];
	179	unsigned char f_bits2[3];
	180	unsigned char f_cbLineOffset[4];
	181	unsigned char f_cbLine[4];
	182	};
	183
	184	#define FDR_BITS1_LANG_BIG 0xF8
	185	#define FDR_BITS1_LANG_SH_BIG 3
	186	#define FDR_BITS1_LANG_LITTLE 0x1F
	187	#define FDR_BITS1_LANG_SH_LITTLE 0
	188
	189	#define FDR_BITS1_FMERGE_BIG 0x04
	190	#define FDR_BITS1_FMERGE_LITTLE 0x20
	191
	192	#define FDR_BITS1_FREADIN_BIG 0x02
	193	#define FDR_BITS1_FREADIN_LITTLE 0x40
	194
	195	#define FDR_BITS1_FBIGENDIAN_BIG 0x01
	196	#define FDR_BITS1_FBIGENDIAN_LITTLE 0x80
	197
	198	#define FDR_BITS2_GLEVEL_BIG 0xC0
	199	#define FDR_BITS2_GLEVEL_SH_BIG 6
	200	#define FDR_BITS2_GLEVEL_LITTLE 0x03
	201	#define FDR_BITS2_GLEVEL_SH_LITTLE 0
	202
	203	/* We ignore the `reserved' field in bits2. */
	204
	205	/* Procedure descriptor external record */
	206
4f1d9bd8 NC	207	struct pdr_ext
4f1d9bd8 NC	208	{
252b5132 RH	209	unsigned char p_adr[4];
	210	unsigned char p_isym[4];
	211	unsigned char p_iline[4];
	212	unsigned char p_regmask[4];
	213	unsigned char p_regoffset[4];
	214	unsigned char p_iopt[4];
	215	unsigned char p_fregmask[4];
	216	unsigned char p_fregoffset[4];
	217	unsigned char p_frameoffset[4];
	218	unsigned char p_framereg[2];
	219	unsigned char p_pcreg[2];
	220	unsigned char p_lnLow[4];
	221	unsigned char p_lnHigh[4];
	222	unsigned char p_cbLineOffset[4];
	223	};
	224
	225	/* Runtime procedure table */
	226
4f1d9bd8 NC	227	struct rpdr_ext
4f1d9bd8 NC	228	{
252b5132 RH	229	unsigned char p_adr[4];
	230	unsigned char p_regmask[4];
	231	unsigned char p_regoffset[4];
	232	unsigned char p_fregmask[4];
	233	unsigned char p_fregoffset[4];
	234	unsigned char p_frameoffset[4];
	235	unsigned char p_framereg[2];
	236	unsigned char p_pcreg[2];
	237	unsigned char p_irpss[4];
	238	unsigned char p_reserved[4];
	239	unsigned char p_exception_info[4];
	240	};
	241
	242	/* Line numbers */
	243
4f1d9bd8 NC	244	struct line_ext
4f1d9bd8 NC	245	{
252b5132 RH	246	unsigned char l_line[4];
	247	};
	248
	249	/* Symbol external record */
	250
4f1d9bd8 NC	251	struct sym_ext
4f1d9bd8 NC	252	{
252b5132 RH	253	unsigned char s_iss[4];
	254	unsigned char s_value[4];
	255	unsigned char s_bits1[1];
	256	unsigned char s_bits2[1];
	257	unsigned char s_bits3[1];
	258	unsigned char s_bits4[1];
	259	};
	260
	261	#define SYM_BITS1_ST_BIG 0xFC
	262	#define SYM_BITS1_ST_SH_BIG 2
	263	#define SYM_BITS1_ST_LITTLE 0x3F
	264	#define SYM_BITS1_ST_SH_LITTLE 0
	265
	266	#define SYM_BITS1_SC_BIG 0x03
	267	#define SYM_BITS1_SC_SH_LEFT_BIG 3
	268	#define SYM_BITS1_SC_LITTLE 0xC0
	269	#define SYM_BITS1_SC_SH_LITTLE 6
	270
	271	#define SYM_BITS2_SC_BIG 0xE0
	272	#define SYM_BITS2_SC_SH_BIG 5
	273	#define SYM_BITS2_SC_LITTLE 0x07
	274	#define SYM_BITS2_SC_SH_LEFT_LITTLE 2
	275
	276	#define SYM_BITS2_RESERVED_BIG 0x10
	277	#define SYM_BITS2_RESERVED_LITTLE 0x08
	278
	279	#define SYM_BITS2_INDEX_BIG 0x0F
	280	#define SYM_BITS2_INDEX_SH_LEFT_BIG 16
	281	#define SYM_BITS2_INDEX_LITTLE 0xF0
	282	#define SYM_BITS2_INDEX_SH_LITTLE 4
	283
	284	#define SYM_BITS3_INDEX_SH_LEFT_BIG 8
	285	#define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4
	286
	287	#define SYM_BITS4_INDEX_SH_LEFT_BIG 0
	288	#define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12
	289
	290	/* External symbol external record */
	291
4f1d9bd8 NC	292	struct ext_ext
4f1d9bd8 NC	293	{
252b5132 RH	294	unsigned char es_bits1[1];
	295	unsigned char es_bits2[1];
	296	unsigned char es_ifd[2];
	297	struct sym_ext es_asym;
	298	};
	299
	300	#define EXT_BITS1_JMPTBL_BIG 0x80
	301	#define EXT_BITS1_JMPTBL_LITTLE 0x01
	302
	303	#define EXT_BITS1_COBOL_MAIN_BIG 0x40
	304	#define EXT_BITS1_COBOL_MAIN_LITTLE 0x02
	305
	306	#define EXT_BITS1_WEAKEXT_BIG 0x20
	307	#define EXT_BITS1_WEAKEXT_LITTLE 0x04
	308
	309	/* Dense numbers external record */
	310
4f1d9bd8 NC	311	struct dnr_ext
4f1d9bd8 NC	312	{
252b5132 RH	313	unsigned char d_rfd[4];
	314	unsigned char d_index[4];
	315	};
	316
	317	/* Relative file descriptor */
	318
4f1d9bd8 NC	319	struct rfd_ext
4f1d9bd8 NC	320	{
252b5132 RH	321	unsigned char rfd[4];
	322	};
	323
	324	/* Optimizer symbol external record */
	325
4f1d9bd8 NC	326	struct opt_ext
4f1d9bd8 NC	327	{
252b5132 RH	328	unsigned char o_bits1[1];
	329	unsigned char o_bits2[1];
	330	unsigned char o_bits3[1];
	331	unsigned char o_bits4[1];
	332	struct rndx_ext o_rndx;
	333	unsigned char o_offset[4];
	334	};
	335
	336	#define OPT_BITS2_VALUE_SH_LEFT_BIG 16
	337	#define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0
	338
	339	#define OPT_BITS3_VALUE_SH_LEFT_BIG 8
	340	#define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8
	341
	342	#define OPT_BITS4_VALUE_SH_LEFT_BIG 0
	343	#define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16