/* 	@(#)a.out.h	4.3	(ULTRIX)	9/4/90	*/
/************************************************************************
 *									*
 *			Copyright (c) 1986,1988 by			*
 *		Digital Equipment Corporation, Maynard, MA		*
 *			All rights reserved.				*
 *									*
 *   This software is furnished under a license and may be used and	*
 *   copied  only  in accordance with the terms of such license and	*
 *   with the  inclusion  of  the  above  copyright  notice.   This	*
 *   software  or  any  other copies thereof may not be provided or	*
 *   otherwise made available to any other person.  No title to and	*
 *   ownership of the software is hereby transferred.			*
 *									*
 *   This software is  derived  from  software  received  from  the	*
 *   University    of   California,   Berkeley,   and   from   Bell	*
 *   Laboratories.  Use, duplication, or disclosure is  subject  to	*
 *   restrictions  under  license  agreements  with  University  of	*
 *   California and with AT&T.						*
 *									*
 *   The information in this software is subject to change  without	*
 *   notice  and should not be construed as a commitment by Digital	*
 *   Equipment Corporation.						*
 *									*
 *   Digital assumes no responsibility for the use  or  reliability	*
 *   of its software on equipment which is not supplied by Digital.	*
 *									*
 ************************************************************************/
#include "ansi_compat.h"
#define	OMAGIC	0407
#define	NMAGIC	0410
#define	ZMAGIC	0413
#define	LIBMAGIC	0443
#define	N_BADMAG(x) \
    (((x).magic)!=OMAGIC && ((x).magic)!=NMAGIC && ((x).magic)!=ZMAGIC && \
     ((x).magic)!=LIBMAGIC)

typedef	struct aouthdr {
	short	magic;		/* see above				*/
	short	vstamp;		/* version stamp			*/
	int	tsize;		/* text size in bytes, padded to DW bdry*/
	int	dsize;		/* initialized data "  "		*/
	int	bsize;		/* uninitialized data "   "		*/
	int	entry;		/* entry pt.				*/
	int	text_start;	/* base of text used for this file	*/
	int	data_start;	/* base of data used for this file	*/
	int	bss_start;	/* base of bss used for this file	*/
	int	gprmask;	/* general purpose register mask	*/
	int	cprmask[4];	/* co-processor register masks		*/
	int	gp_value;	/* the gp value used for this object    */
} AOUTHDR;
#define AOUTHSZ sizeof(AOUTHDR)

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

#define SCNROUND ((long)16)

/* the number of shared libraries in a .lib section in an absolute output file
 * is put in the s_paddr field of the .lib section header, the following define
 * allows it to be referenced as s_nlib
 */
#define s_nlib	s_paddr
#define	SCNHDR	struct scnhdr
#define	SCNHSZ	sizeof(SCNHDR)

/*
 * Define constants for names of "special" sections
 */

#define	_TEXT	".text"
#define	_DATA	".data"
#define	_BSS	".bss"
#define	_TV	".tv"
#define _INIT ".init"
#define _FINI ".fini"
#define _LIB ".lib"

/*
 * Mips names for read only data (.rdata), small data (.sdata) and small bss
 * (.bss).  Small sections are used for global pointer relative data items.
 */
#define	_RDATA	".rdata"
#define	_SDATA	".sdata"
#define	_SBSS	".sbss"
#define _UCODE	".ucode"
#define _LIT8	".lit8"
#define _LIT4	".lit4"
/*
 * The low 4 bits of s_flags is used as a section "type"
 */
#define STYP_REG	0x00		/* "regular" section:
						allocated, relocated, loaded */
#define STYP_DSECT	0x01		/* "dummy" section:
						not allocated, relocated,
						not loaded */
#define STYP_NOLOAD	0x02		/* "noload" section:
						allocated, relocated,
						 not loaded */
#define STYP_GROUP	0x04		/* "grouped" section:
						formed of input sections */
#define STYP_PAD	0x08		/* "padding" section:
						not allocated, not relocated,
						 loaded */
#define STYP_COPY	0x10		/* "copy" section:
						for decision function used
						by field update;  not
						allocated, not relocated,
						loaded;  reloc & lineno
						entries processed normally */
#define	STYP_TEXT	0x20		/* section contains text only */
#define STYP_DATA	0x40		/* section contains data only */
#define STYP_BSS	0x80		/* section contains bss only */
#define STYP_RDATA	0x100		/* section contains read only data */
#define STYP_SDATA	0x200		/* section contains small data only */
#define STYP_SBSS	0x400		/* section contains small bss only */
#define STYP_UCODE	0x800		/* section only contains ucodes */
#define STYP_LIT8	0x08000000	/* literal pool for 8 byte literals */
#define STYP_LIT4	0x10000000	/* literal pool for 4 byte literals */
#define S_NRELOC_OVFL	0x20000000	/* s_nreloc overflowed, the value is in
					   v_addr of the first entry */
#define STYP_LIB	0x40000000	/* section is a .lib section */
#define STYP_INIT	0x80000000	/* section only contains the text
					   instructions for the .init sec. */
/*
 *  In a minimal file or an update file, a new function
 *  (as compared with a replaced function) is indicated by S_NEWFCN
 */

#define S_NEWFCN  0x100

/*
 * In 3b Update Files (output of ogen), sections which appear in SHARED
 * segments of the Pfile will have the S_SHRSEG flag set by ogen, to inform
 * dufr that updating 1 copy of the proc. will update all process invocations.
 */

#define S_SHRSEG	0x20

/*
 * This table gives the section size corresponding to each applicable
 * Gnum (always including 0), sorted by smallest size first. It is pointed to
 * by the s_lnnoptr field in the section header and its number of entries
 * (including the header) is in the s_nlnno field in the section header.
 * This table only needs to exist for the .sdata and .sbss sections
 * sections.  If there is no "small" section then the gp table for it is
 * attached to the coresponding "large" section so the information still
 * gets to the loader.
 */
union gp_table {
  struct {
    long current_g_value; /* actual value */
    long unused;
  } header;
  struct {
    long g_value; /* hypothetical value */
    long bytes;	/* section size corresponding to hypothetical value */
  } entry;
}; 
#define GPTAB	union gp_table
#define GPTABSZ	sizeof(GPTAB)

/*
 * This is the definition of a mips .lib section entry.  Note the size and
 * offset are in sizeof(long)'s not bytes.
 */
struct libscn {
	long	size;		/* size of this entry (including target name) */
	long	offset;		/* offset from start of entry to target name  */
	long	tsize;		/* text size in bytes, padded to DW boundary  */
	long	dsize;		/* initialized data "  	  "    "  "   "       */
	long	bsize;		/* uninitialized data "   "    "  "   "       */
	long	text_start;	/* base of text used for this library	      */
	long	data_start;	/* base of data used for this library	      */
	long	bss_start;	/* base of bss used for this library	      */
	/* pathname of target shared library */
};

#define	LIBSCN	struct libscn
#define	LSCNSZ	sizeof(LIBSCN)
/* $Header: a.out.h,v 2010.5.1.5 89/11/29 22:40:53 bettina Exp $ */

#define N_TXTOFF(f, a) \
 ((a).magic == ZMAGIC || (a).magic == LIBMAGIC ? 0 : \
  ((a).vstamp < 23 ? \
   ((FILHSZ + AOUTHSZ + (f).f_nscns * SCNHSZ + 7) & 0xfffffff8) : \
   ((FILHSZ + AOUTHSZ + (f).f_nscns * SCNHSZ + SCNROUND-1) & ~(SCNROUND-1)) ) )

/*
 * Format of an a.out header
 */
struct	exec {	/* a.out header */
	short		a_magic;	/* magic number */
	unsigned	a_text;		/* size of text segment */
					/* in bytes		*/
					/* padded out to next	*/
					/* page boundary with	*/
					/* binary zeros.	*/
	unsigned	a_data;		/* size of initialized data */
					/* segment in bytes	*/
					/* padded out to next	*/
					/* page boundary with	*/
					/* binary zeros.	*/
	unsigned	a_bss;		/* Actual size of	*/
					/* uninitialized data	*/
					/* segment in bytes.	*/
	unsigned	a_syms;		/* size of symbol table */
	unsigned	a_entry;	/* entry point */
};

#define	A_MAGIC1	0407		/* normal */
#define	A_MAGIC0	0401		/* lpd (UNIX/RT) */
#define	A_MAGIC2	0410		/* read-only text */
#define	A_MAGIC3	0411		/* separated I&D */
#define	A_MAGIC4	0405		/* overlay */
#define	A_MAGIC5	0437		/* system overlay, separated I&D */

/* in invocation of BADMAG macro, argument should not be a function. */

#define	BADMAG(X) (X.a_magic != A_MAGIC1 &&\
		X.a_magic != A_MAGIC2 &&\
		X.a_magic != A_MAGIC3 &&\
		X.a_magic != A_MAGIC4 &&\
		X.a_magic != A_MAGIC5 &&\
		X.a_magic != A_MAGIC0)

	/* values for type flag */

#define	N_UNDF	0	/* undefined */
#define	N_TYPE	037
#define	N_FN	037	/* file name symbol */

#define	N_ABS	02	/* absolute */
#define	N_TEXT	04	/* text */
#define	N_DATA	06	/* data */
#define	N_BSS	010
#define	N_GSYM	0040	/* global sym: name,,type,0 */
#define	N_FNAME 0042	/* procedure name (f77 kludge): name,,,0 */
#define	N_FUN	0044	/* procedure: name,,linenumber,address */
#define	N_STSYM 0046	/* static symbol: name,,type,address */
#define	N_LCSYM 0050	/* .lcomm symbol: name,,type,address */
#define	N_BSTR	0060	/* begin structure: name,,, */
#define	N_RSYM	0100	/* register sym: name,,register,offset */
#define	N_SLINE	0104	/* src line: ,,linenumber,address */
#define	N_ESTR	0120	/* end structure: name,,, */
#define	N_SSYM	0140	/* structure elt: name,,type,struct_offset */
#define	N_SO	0144	/* source file name: name,,,address */
#define	N_BENUM	0160	/* begin enum: name,,, */
#define	N_LSYM	0200	/* local sym: name,,type,offset */
#define	N_SOL	0204	/* #line source filename: name,,,address */
#define	N_ENUM	0220	/* enum element: name,,,value */
#define	N_PSYM	0240	/* parameter: name,,type,offset */
#define	N_ENTRY	0244	/* alternate entry: name,,linenumber,address */
#define	N_EENUM	0260	/* end enum: name,,, */
#define	N_LBRAC	0300	/* left bracket: ,,nesting level,address */
#define	N_RBRAC	0340	/* right bracket: ,,nesting level,address */
#define	N_BCOMM	0342	/* begin common: name,,, */
#define	N_ECOMM	0344	/* end common: name,,, */
#define	N_ECOML	0350	/* end common (local name): ,,,address */
#define	N_STRU	0374	/* 2nd entry for structure: str tag,,,length */
#define	N_LENG	0376	/* second stab entry with length information */
#define	N_EXT	01	/* external bit, or'ed in */
#define	FORMAT	"%.8x"
#define	STABTYPES 0340