[deliverable/binutils-gdb.git] / include / coff / rs6k64.h

/* IBM RS/6000 "XCOFF64" file definitions for BFD.

   Copyright 2000 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#define DO_NOT_DEFINE_AOUTHDR
#define DO_NOT_DEFINE_SCNHDR
#define DO_NOT_DEFINE_LINENO
#define DO_NOT_DEFINE_AUXENT
#include "coff/external.h"

        /* IBM RS/6000 */
#define U803XTOCMAGIC 0757	/* readonly text segments and TOC, XCOFF64 */

#define BADMAG(x) ((x).f_magic != U803XTOCMAGIC)

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

typedef struct 
{
  unsigned char	magic[2];	/* type of file			*/
  unsigned char	vstamp[2];	/* version stamp		*/
  unsigned char	o_debugger[4];	/* reserved 			*/
  unsigned char	text_start[8];	/* base of text used for this file */
  unsigned char	data_start[8];	/* base of data used for this file */
  unsigned char	o_toc[8];	/* 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_resv2[4];	/* reserved 			*/
  unsigned char	tsize[8];	/* text size bytes, padded to FW bdry */
  unsigned char	dsize[8];	/* initialized data "  "	*/
  unsigned char	bsize[8];	/* uninitialized data "   "	*/
  unsigned char	entry[8];	/* entry pt.			*/
  unsigned char	o_maxstack[8];	/* max stack size (??) 		*/
  unsigned char o_maxdata[8];	/* max data size (??) 		*/
  unsigned char	o_resv3[16];	/* reserved 			*/
}
AOUTHDR;

#define AOUTSZ 120
#define SMALL_AOUTSZ (0)
#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 */


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

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

#define	SCNHDR	struct external_scnhdr

#define	SCNHSZ	72

/* 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

/********************** 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[8];/* function name symbol index, iff l_lnno == 0*/
    char l_paddr[8];	/* (physical) address of line number	*/
  } l_addr;

  char l_lnno[4];		/* line number		*/
};

#define	LINENO	struct external_lineno
#define	LINESZ	12


union external_auxent
{
  struct
  {
    union
    {
      struct
      {
	char x_lnno[4]; 	/* declaration line number */
	char x_size[2]; 	/* str/union/array size */
      } x_lnsz;
      
      struct
      {
	char x_lnnoptr[8];/* ptr to fcn line */
	char x_fsize[4];	 /* size of function */
	char x_endndx[4];	 /* entry ndx past block end */
      } x_fcn;

    } x_fcnary;

  } x_sym;
         
  union
  {
    char x_fname[E_FILNMLEN];
    
    struct
    {
      char x_zeroes[4];
      char x_offset[4];
      char          x_pad[6];
      unsigned char x_ftype[1];
      unsigned char x_resv[2];
    } x_n;

  } x_file;

  struct
  {
    char x_exptr[8];
    char x_fsize[4];
    char x_endndx[4];
    char x_pad[1];
  } x_except;

  struct
  {
    unsigned char x_scnlen_lo[4];
    unsigned char x_parmhash[4];
    unsigned char x_snhash[2];
    unsigned char x_smtyp[1];
    unsigned char x_smclas[1];
    unsigned char x_scnlen_hi[4];
    unsigned char x_pad[1];
  } x_csect;	

  struct
  {
    char x_pad[17];
    char x_auxtype[1];
  } x_auxtype;
};

#define	AUXENT	union external_auxent
#define	AUXESZ	18

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

/* Values for auxtype field in XCOFF64, taken from AIX 4.3 sym.h */
#define _AUX_EXCEPT     255
#define _AUX_FCN        254
#define _AUX_SYM        253
#define _AUX_FILE       252
#define _AUX_CSECT      251

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

struct external_reloc
{
  char r_vaddr[8];
  char r_symndx[4];
  char r_size[1];
  char r_type[1];
};

#define RELOC struct external_reloc
#define RELSZ 14

#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
7f6d05e8	1	/* IBM RS/6000 "XCOFF64" file definitions for BFD.
4f1d9bd8 NC	2
	3	Copyright 2000 Free Software Foundation, Inc.
	4
	5	This program is free software; you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation; either version 2 of the License, or
	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program; if not, write to the Free Software
	17	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	18
	19	#define DO_NOT_DEFINE_AOUTHDR
	20	#define DO_NOT_DEFINE_SCNHDR
	21	#define DO_NOT_DEFINE_LINENO
	22	#define DO_NOT_DEFINE_AUXENT
	23	#include "coff/external.h"
7f6d05e8 CP	24
7f6d05e8 CP	25	/* IBM RS/6000 */
c6664dfb	26	#define U803XTOCMAGIC 0757 /* readonly text segments and TOC, XCOFF64 */
7f6d05e8	27
c6664dfb	28	#define BADMAG(x) ((x).f_magic != U803XTOCMAGIC)
7f6d05e8	29
7f6d05e8 CP	30	/******************** AOUT "OPTIONAL HEADER" ********************/
7f6d05e8 CP	31
7f6d05e8 CP	32	typedef struct
7f6d05e8 CP	33	{
4f1d9bd8 NC	34	unsigned char magic[2]; /* type of file */
	35	unsigned char vstamp[2]; /* version stamp */
	36	unsigned char o_debugger[4]; /* reserved */
7f6d05e8 CP	37	unsigned char text_start[8]; /* base of text used for this file */
	38	unsigned char data_start[8]; /* base of data used for this file */
	39	unsigned char o_toc[8]; /* address of TOC */
4f1d9bd8 NC	40	unsigned char o_snentry[2]; /* section number of entry point */
	41	unsigned char o_sntext[2]; /* section number of .text section */
	42	unsigned char o_sndata[2]; /* section number of .data section */
	43	unsigned char o_sntoc[2]; /* section number of TOC */
	44	unsigned char o_snloader[2]; /* section number of .loader section */
	45	unsigned char o_snbss[2]; /* section number of .bss section */
	46	unsigned char o_algntext[2]; /* .text alignment */
	47	unsigned char o_algndata[2]; /* .data alignment */
	48	unsigned char o_modtype[2]; /* module type (??) */
	49	unsigned char o_cputype[2]; /* cpu type */
	50	unsigned char o_resv2[4]; /* reserved */
	51	unsigned char tsize[8]; /* text size bytes, padded to FW bdry */
	52	unsigned char dsize[8]; /* initialized data " " */
	53	unsigned char bsize[8]; /* uninitialized data " " */
	54	unsigned char entry[8]; /* entry pt. */
7f6d05e8 CP	55	unsigned char o_maxstack[8]; /* max stack size (??) */
7f6d05e8 CP	56	unsigned char o_maxdata[8]; /* max data size (??) */
4f1d9bd8	57	unsigned char o_resv3[16]; /* reserved */
7f6d05e8 CP	58	}
	59	AOUTHDR;
	60
c6664dfb	61	#define AOUTSZ 120
7f6d05e8 CP	62	#define SMALL_AOUTSZ (0)
	63	#define AOUTHDRSZ 72
	64
	65	#define RS6K_AOUTHDR_OMAGIC 0x0107 /* old: text & data writeable */
	66	#define RS6K_AOUTHDR_NMAGIC 0x0108 /* new: text r/o, data r/w */
	67	#define RS6K_AOUTHDR_ZMAGIC 0x010B /* paged: text r/o, both page-aligned */
	68
	69
	70	/******************** SECTION HEADER ********************/
4f1d9bd8 NC	71	struct external_scnhdr
	72	{
	73	char s_name[8]; /* section name */
7f6d05e8 CP	74	char s_paddr[8]; /* physical address, aliased s_nlib */
	75	char s_vaddr[8]; /* virtual address */
	76	char s_size[8]; /* section size */
	77	char s_scnptr[8]; /* file ptr to raw data for section */
	78	char s_relptr[8]; /* file ptr to relocation */
	79	char s_lnnoptr[8]; /* file ptr to line numbers */
	80	char s_nreloc[4]; /* number of relocation entries */
	81	char s_nlnno[4]; /* number of line number entries*/
4f1d9bd8 NC	82	char s_flags[4]; /* flags */
4f1d9bd8 NC	83	char s_pad[4]; /* padding */
7f6d05e8 CP	84	};
	85
	86	/*
	87	* names of "special" sections
	88	*/
	89	#define _TEXT ".text"
	90	#define _DATA ".data"
	91	#define _BSS ".bss"
	92	#define _PAD ".pad"
	93	#define _LOADER ".loader"
	94
	95	#define SCNHDR struct external_scnhdr
	96
	97	#define SCNHSZ 72
	98
	99	/* XCOFF uses a special .loader section with type STYP_LOADER. */
	100	#define STYP_LOADER 0x1000
	101
	102	/* XCOFF uses a special .debug section with type STYP_DEBUG. */
	103	#define STYP_DEBUG 0x2000
	104
	105	/* XCOFF handles line number or relocation overflow by creating
	106	another section header with STYP_OVRFLO set. */
	107	#define STYP_OVRFLO 0x8000
	108
	109	/******************** LINE NUMBERS ********************/
	110
	111	/* 1 line number entry for every "breakpointable" source line in a section.
4f1d9bd8 NC	112	Line numbers are grouped on a per function basis; first entry in a function
	113	grouping will have l_lnno = 0 and in place of physical address will be the
	114	symbol table index of the function name. */
	115	struct external_lineno
	116	{
	117	union
	118	{
	119	char l_symndx[8];/* function name symbol index, iff l_lnno == 0*/
	120	char l_paddr[8]; /* (physical) address of line number */
	121	} l_addr;
7f6d05e8	122
4f1d9bd8 NC	123	char l_lnno[4]; /* line number */
4f1d9bd8 NC	124	};
7f6d05e8 CP	125
7f6d05e8 CP	126	#define LINENO struct external_lineno
7f6d05e8 CP	127	#define LINESZ 12
	128
	129
4f1d9bd8	130	union external_auxent
7f6d05e8	131	{
4f1d9bd8 NC	132	struct
	133	{
	134	union
	135	{
	136	struct
	137	{
	138	char x_lnno[4]; /* declaration line number */
	139	char x_size[2]; /* str/union/array size */
	140	} x_lnsz;
	141
	142	struct
	143	{
	144	char x_lnnoptr[8];/* ptr to fcn line */
	145	char x_fsize[4]; /* size of function */
	146	char x_endndx[4]; /* entry ndx past block end */
	147	} x_fcn;
	148
	149	} x_fcnary;
	150
	151	} x_sym;
7f6d05e8	152
4f1d9bd8 NC	153	union
	154	{
	155	char x_fname[E_FILNMLEN];
	156
	157	struct
	158	{
	159	char x_zeroes[4];
	160	char x_offset[4];
	161	char x_pad[6];
	162	unsigned char x_ftype[1];
	163	unsigned char x_resv[2];
	164	} x_n;
	165
	166	} x_file;
	167
	168	struct
	169	{
	170	char x_exptr[8];
	171	char x_fsize[4];
	172	char x_endndx[4];
	173	char x_pad[1];
	174	} x_except;
	175
	176	struct
	177	{
	178	unsigned char x_scnlen_lo[4];
	179	unsigned char x_parmhash[4];
	180	unsigned char x_snhash[2];
	181	unsigned char x_smtyp[1];
	182	unsigned char x_smclas[1];
	183	unsigned char x_scnlen_hi[4];
	184	unsigned char x_pad[1];
	185	} x_csect;
	186
	187	struct
	188	{
	189	char x_pad[17];
	190	char x_auxtype[1];
	191	} x_auxtype;
7f6d05e8 CP	192	};
7f6d05e8 CP	193
7f6d05e8 CP	194	#define AUXENT union external_auxent
7f6d05e8 CP	195	#define AUXESZ 18
4f1d9bd8	196
7f6d05e8 CP	197	#define DBXMASK 0x80 /* for dbx storage mask */
	198	#define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK)
	199
	200	/* Values for auxtype field in XCOFF64, taken from AIX 4.3 sym.h */
	201	#define _AUX_EXCEPT 255
	202	#define _AUX_FCN 254
	203	#define _AUX_SYM 253
	204	#define _AUX_FILE 252
	205	#define _AUX_CSECT 251
	206
7f6d05e8 CP	207	/******************** RELOCATION DIRECTIVES ********************/
7f6d05e8 CP	208
4f1d9bd8 NC	209	struct external_reloc
4f1d9bd8 NC	210	{
7f6d05e8 CP	211	char r_vaddr[8];
	212	char r_symndx[4];
	213	char r_size[1];
	214	char r_type[1];
	215	};
	216
7f6d05e8 CP	217	#define RELOC struct external_reloc
	218	#define RELSZ 14
	219
	220	#define DEFAULT_DATA_SECTION_ALIGNMENT 4
	221	#define DEFAULT_BSS_SECTION_ALIGNMENT 4
	222	#define DEFAULT_TEXT_SECTION_ALIGNMENT 4
	223	/* For new sections we havn't heard of before */
	224	#define DEFAULT_SECTION_ALIGNMENT 4