[thirdparty/binutils-gdb.git] / include / coff / rs6000.h

/* IBM RS/6000 "XCOFF" file definitions for BFD.
   Copyright 1990, 1991, 1993, 1994, 1995 Free Software Foundation, Inc.
   FIXME: Can someone provide a transliteration of this name into ASCII?
   Using the following chars caused a compiler warning on HIUX (so I replaced
   them with octal escapes), and isn't useful without an understanding of what
   character set it is.
   Written by Mimi Ph\373\364ng-Th\345o V\365 of IBM
   and John Gilmore of Cygnus Support.  */

#define DO_NOT_DEFINE_AOUTHDR
#define DO_NOT_DEFINE_AUXENT
#define L_LNNO_SIZE 2
#include "coff/external.h"

        /* IBM RS/6000 */
#define U802WRMAGIC     0730    /* writeable text segments **chh**      */
#define U802ROMAGIC     0735    /* readonly sharable text segments      */
#define U802TOCMAGIC    0737    /* readonly text segments and TOC       */

#define BADMAG(x)	\
	((x).f_magic != U802ROMAGIC && (x).f_magic != U802WRMAGIC && \
	 (x).f_magic != U802TOCMAGIC)

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

typedef struct 
{
  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	o_toc[4];	/* address of TOC */
  unsigned char	o_snentry[2];	/* section number of entry point */
  unsigned char	o_sntext[2];	/* section number of .text section */
  unsigned char	o_sndata[2];	/* section number of .data section */
  unsigned char	o_sntoc[2];	/* section number of TOC */
  unsigned char	o_snloader[2];	/* section number of .loader section */
  unsigned char	o_snbss[2];	/* section number of .bss section */
  unsigned char	o_algntext[2];	/* .text alignment */
  unsigned char	o_algndata[2];	/* .data alignment */
  unsigned char	o_modtype[2];	/* module type (??) */
  unsigned char o_cputype[2];	/* cpu type */
  unsigned char	o_maxstack[4];	/* max stack size (??) */
  unsigned char o_maxdata[4];	/* max data size (??) */
  unsigned char	o_resv2[12];	/* reserved */
}
AOUTHDR;

#define AOUTSZ 72
#define SMALL_AOUTSZ (28)
#define AOUTHDRSZ 72

#define	RS6K_AOUTHDR_OMAGIC	0x0107	/* old: text & data writeable */
#define	RS6K_AOUTHDR_NMAGIC	0x0108	/* new: text r/o, data r/w */
#define	RS6K_AOUTHDR_ZMAGIC	0x010B	/* paged: text r/o, both page-aligned */

/* More names of "special" sections.  */
#define _PAD	".pad"
#define _LOADER	".loader"

/* XCOFF uses a special .loader section with type STYP_LOADER.  */
#define STYP_LOADER 0x1000

/* XCOFF uses a special .debug section with type STYP_DEBUG.  */
#define STYP_DEBUG 0x2000

/* XCOFF handles line number or relocation overflow by creating
   another section header with STYP_OVRFLO set.  */
#define STYP_OVRFLO 0x8000

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)) */

  struct
  {
    unsigned char x_scnlen[4];
    unsigned char x_parmhash[4];
    unsigned char x_snhash[2];
    unsigned char x_smtyp[1];
    unsigned char x_smclas[1];
    unsigned char x_stab[4];
    unsigned char x_snstab[2];
  } x_csect;
};

#define	AUXENT	union external_auxent
#define	AUXESZ	18

#define DBXMASK 0x80		/* for dbx storage mask */
#define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK)

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

struct external_reloc
{
  char r_vaddr[4];
  char r_symndx[4];
  char r_size[1];
  char r_type[1];
};

#define RELOC struct external_reloc
#define RELSZ 10

#define DEFAULT_DATA_SECTION_ALIGNMENT 4
#define DEFAULT_BSS_SECTION_ALIGNMENT 4
#define DEFAULT_TEXT_SECTION_ALIGNMENT 4
/* For new sections we havn't heard of before */
#define DEFAULT_SECTION_ALIGNMENT 4
Commit	Line	Data
252b5132	1	/* IBM RS/6000 "XCOFF" file definitions for BFD.
4f1d9bd8	2	Copyright 1990, 1991, 1993, 1994, 1995 Free Software Foundation, Inc.
252b5132 RH	3	FIXME: Can someone provide a transliteration of this name into ASCII?
	4	Using the following chars caused a compiler warning on HIUX (so I replaced
	5	them with octal escapes), and isn't useful without an understanding of what
	6	character set it is.
	7	Written by Mimi Ph\373\364ng-Th\345o V\365 of IBM
	8	and John Gilmore of Cygnus Support. */
	9
4f1d9bd8 NC	10	#define DO_NOT_DEFINE_AOUTHDR
	11	#define DO_NOT_DEFINE_AUXENT
	12	#define L_LNNO_SIZE 2
	13	#include "coff/external.h"
252b5132 RH	14
	15	/* IBM RS/6000 */
	16	#define U802WRMAGIC 0730 /* writeable text segments chh */
	17	#define U802ROMAGIC 0735 /* readonly sharable text segments */
	18	#define U802TOCMAGIC 0737 /* readonly text segments and TOC */
	19
	20	#define BADMAG(x) \
	21	((x).f_magic != U802ROMAGIC && (x).f_magic != U802WRMAGIC && \
	22	(x).f_magic != U802TOCMAGIC)
	23
252b5132 RH	24	/******************** AOUT "OPTIONAL HEADER" ********************/
252b5132 RH	25
252b5132 RH	26	typedef struct
	27	{
	28	unsigned char magic[2]; /* type of file */
	29	unsigned char vstamp[2]; /* version stamp */
	30	unsigned char tsize[4]; /* text size in bytes, padded to FW bdry */
	31	unsigned char dsize[4]; /* initialized data " " */
	32	unsigned char bsize[4]; /* uninitialized data " " */
	33	unsigned char entry[4]; /* entry pt. */
	34	unsigned char text_start[4]; /* base of text used for this file */
	35	unsigned char data_start[4]; /* base of data used for this file */
	36	unsigned char o_toc[4]; /* address of TOC */
	37	unsigned char o_snentry[2]; /* section number of entry point */
	38	unsigned char o_sntext[2]; /* section number of .text section */
	39	unsigned char o_sndata[2]; /* section number of .data section */
	40	unsigned char o_sntoc[2]; /* section number of TOC */
	41	unsigned char o_snloader[2]; /* section number of .loader section */
	42	unsigned char o_snbss[2]; /* section number of .bss section */
	43	unsigned char o_algntext[2]; /* .text alignment */
	44	unsigned char o_algndata[2]; /* .data alignment */
	45	unsigned char o_modtype[2]; /* module type (??) */
	46	unsigned char o_cputype[2]; /* cpu type */
	47	unsigned char o_maxstack[4]; /* max stack size (??) */
	48	unsigned char o_maxdata[4]; /* max data size (??) */
	49	unsigned char o_resv2[12]; /* reserved */
	50	}
	51	AOUTHDR;
	52
	53	#define AOUTSZ 72
	54	#define SMALL_AOUTSZ (28)
	55	#define AOUTHDRSZ 72
	56
	57	#define RS6K_AOUTHDR_OMAGIC 0x0107 /* old: text & data writeable */
	58	#define RS6K_AOUTHDR_NMAGIC 0x0108 /* new: text r/o, data r/w */
	59	#define RS6K_AOUTHDR_ZMAGIC 0x010B /* paged: text r/o, both page-aligned */
	60
4f1d9bd8	61	/* More names of "special" sections. */
252b5132 RH	62	#define _PAD ".pad"
	63	#define _LOADER ".loader"
	64
252b5132 RH	65	/* XCOFF uses a special .loader section with type STYP_LOADER. */
	66	#define STYP_LOADER 0x1000
	67
	68	/* XCOFF uses a special .debug section with type STYP_DEBUG. */
	69	#define STYP_DEBUG 0x2000
	70
	71	/* XCOFF handles line number or relocation overflow by creating
	72	another section header with STYP_OVRFLO set. */
	73	#define STYP_OVRFLO 0x8000
	74
4f1d9bd8	75	union external_auxent
252b5132	76	{
4f1d9bd8 NC	77	struct
	78	{
	79	char x_tagndx[4]; /* str, un, or enum tag indx */
	80
	81	union
	82	{
	83	struct
	84	{
	85	char x_lnno[2]; /* declaration line number */
	86	char x_size[2]; /* str/union/array size */
	87	} x_lnsz;
	88
	89	char x_fsize[4]; /* size of function */
	90
	91	} x_misc;
	92
	93	union
	94	{
	95	struct /* if ISFCN, tag, or .bb */
	96	{
	97	char x_lnnoptr[4]; /* ptr to fcn line # */
	98	char x_endndx[4]; /* entry ndx past block end */
	99	} x_fcn;
	100
	101	struct /* if ISARY, up to 4 dimen. */
	102	{
	103	char x_dimen[E_DIMNUM][2];
	104	} x_ary;
	105
	106	} x_fcnary;
	107
	108	char x_tvndx[2]; /* tv index */
	109
	110	} x_sym;
	111
	112	union
	113	{
	114	char x_fname[E_FILNMLEN];
	115
	116	struct
	117	{
	118	char x_zeroes[4];
	119	char x_offset[4];
	120	} x_n;
	121
	122	} x_file;
	123
	124	struct
	125	{
	126	char x_scnlen[4]; /* section length */
	127	char x_nreloc[2]; /* # relocation entries */
	128	char x_nlinno[2]; /* # line numbers */
	129	} x_scn;
	130
	131	struct
	132	{
	133	char x_tvfill[4]; /* tv fill value */
	134	char x_tvlen[2]; /* length of .tv */
	135	char x_tvran[2][2]; /* tv range */
	136	} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
	137
	138	struct
	139	{
	140	unsigned char x_scnlen[4];
141	unsigned char x_parmhash[4];
142	unsigned char x_snhash[2];
143	unsigned char x_smtyp[1];
144	unsigned char x_smclas[1];
145	unsigned char x_stab[4];
146	unsigned char x_snstab[2];
147	} x_csect;
252b5132 RH	148	};
252b5132 RH	149
252b5132 RH	150	#define AUXENT union external_auxent
252b5132 RH	151	#define AUXESZ 18
4f1d9bd8	152
252b5132 RH	153	#define DBXMASK 0x80 /* for dbx storage mask */
	154	#define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK)
	155
252b5132 RH	156	/******************** RELOCATION DIRECTIVES ********************/
252b5132 RH	157
4f1d9bd8 NC	158	struct external_reloc
4f1d9bd8 NC	159	{
252b5132 RH	160	char r_vaddr[4];
	161	char r_symndx[4];
	162	char r_size[1];
	163	char r_type[1];
	164	};
	165
252b5132 RH	166	#define RELOC struct external_reloc
	167	#define RELSZ 10
	168
	169	#define DEFAULT_DATA_SECTION_ALIGNMENT 4
	170	#define DEFAULT_BSS_SECTION_ALIGNMENT 4
	171	#define DEFAULT_TEXT_SECTION_ALIGNMENT 4
	172	/* For new sections we havn't heard of before */
	173	#define DEFAULT_SECTION_ALIGNMENT 4