/*	$NetBSD: exec_ecoff.h,v 1.10 1996/09/26 22:39:14 cgd Exp $	*/

/*
 * Copyright (c) 1994 Adam Glass
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Adam Glass.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * $FreeBSD$
 */

#ifndef	_SYS_EXEC_ECOFF_H_
#define	_SYS_EXEC_ECOFF_H_

#define	ECOFF_LDPGSZ 4096

#define	ECOFF_PAD \
	u_short bldrev;                                 /* XXX */

#define	ECOFF_MACHDEP \
	u_int   gprmask; \
	u_int   fprmask; \
	u_long  gp_value

#define	ECOFF_MAGIC_ALPHA		0603
#define	ECOFF_MAGIC_NETBSD_ALPHA	0605
#define	ECOFF_BADMAG(ep)		((ep)->f.f_magic != ECOFF_MAGIC_ALPHA)

#define	ECOFF_FLAG_EXEC			0002
#define	ECOFF_SEGMENT_ALIGNMENT(ep) \
	(((ep)->f.f_flags & ECOFF_FLAG_EXEC) == 0 ? 8 : 16)

struct ecoff_symhdr {
	int16_t	magic;
	int16_t	vstamp;
	int32_t	lineMax;
	int32_t	densenumMax;
	int32_t	procMax;
	int32_t	lsymMax;
	int32_t	optsymMax;
	int32_t	auxsymMax;
	int32_t	lstrMax;
	int32_t	estrMax;
	int32_t	fdMax;
	int32_t	rfdMax;
	int32_t	esymMax;
	long	linesize;
	long	cbLineOffset;
	long	cbDnOffset;
	long	cbPdOffset;
	long	cbSymOffset;
	long	cbOptOffset;
	long	cbAuxOffset;
	long	cbSsOffset;
	long	cbSsExtOffset;
	long	cbFdOffset;
	long	cbRfdOffset;
	long	cbExtOffset;
};

struct ecoff_extsym {
	long		es_value;
	int		es_strindex;
	unsigned	es_type:6;
	unsigned	es_class:5;
	unsigned	:1;
	unsigned	es_symauxindex:20;
	unsigned	es_jmptbl:1;
	unsigned	es_cmain:1;
	unsigned	es_weakext:1;
	unsigned	:29;
	int		es_indexfld;
};


struct ecoff_filehdr {
	u_short f_magic;	/* magic number */
	u_short f_nscns;	/* # of sections */
	u_int   f_timdat;	/* time and date stamp */
	u_long  f_symptr;	/* file offset of symbol table */
	u_int   f_nsyms;	/* # of symbol table entries */
	u_short f_opthdr;	/* sizeof the optional header */
	u_short f_flags;	/* flags??? */
};

struct ecoff_aouthdr {
	u_short magic;
	u_short vstamp;
	ECOFF_PAD
	u_long  tsize;
	u_long  dsize;
	u_long  bsize;
	u_long  entry;
	u_long  text_start;
	u_long  data_start;
	u_long  bss_start;
	ECOFF_MACHDEP;
};

struct ecoff_scnhdr {		/* needed for size info */
	char	s_name[8];	/* name */
	u_long  s_paddr;	/* physical addr? for ROMing?*/
	u_long  s_vaddr;	/* virtual addr? */
	u_long  s_size;		/* size */
	u_long  s_scnptr;	/* file offset of raw data */
	u_long  s_relptr;	/* file offset of reloc data */
	u_long  s_lnnoptr;	/* file offset of line data */
	u_short s_nreloc;	/* # of relocation entries */
	u_short s_nlnno;	/* # of line entries */
	u_int   s_flags;	/* flags */
};

struct ecoff_exechdr {
	struct ecoff_filehdr f;
	struct ecoff_aouthdr a;
};
enum scnhdr_flags {
	STYP_REG = 0x00,	/* regular (alloc'ed, reloc'ed, loaded) */
	STYP_DSECT = 0x01,	/* dummy   (reloc'd) */
	STYP_NOLOAD = 0x02,	/* no-load (reloc'd) */
	STYP_GROUP = 0x04,	/* grouped */
	STYP_PAD = 0x08,	/* padding (loaded) */
	STYP_COPY = 0x10,	/* ??? */
	STYP_TEXT = 0x20,	/* text */
	STYP_DATA = 0x40,	/* data */
	STYP_BSS = 0x80,	/* bss */
	STYP_INFO = 0x200,	/* comment (!loaded, !alloc'ed, !reloc'd) */
	STYP_OVER = 0x400,	/* overlay (!allocated, reloc'd, !loaded) */
	STYP_LIB = 0x800	/* lists shared library files */
};

#define	ECOFF_HDR_SIZE (sizeof(struct ecoff_exechdr))

#define	ECOFF_OMAGIC 0407
#define	ECOFF_NMAGIC 0410
#define	ECOFF_ZMAGIC 0413

#define	ECOFF_ROUND(value, by) \
	(((value) + (by) - 1) & ~((by) - 1))

#define	ECOFF_BLOCK_ALIGN(ep, value)					       \
	((ep)->a.magic == ECOFF_ZMAGIC ? ECOFF_ROUND((value), ECOFF_LDPGSZ) :  \
	(value))

#define	ECOFF_TXTOFF(ep)						\
	((ep)->a.magic == ECOFF_ZMAGIC ? 0 :				\
	ECOFF_ROUND(ECOFF_HDR_SIZE + (ep)->f.f_nscns *			\
	sizeof(struct ecoff_scnhdr), ECOFF_SEGMENT_ALIGNMENT(ep)))

#define	ECOFF_DATOFF(ep) \
	(ECOFF_BLOCK_ALIGN((ep), ECOFF_TXTOFF(ep) + (ep)->a.tsize))

#define	ECOFF_SEGMENT_ALIGN(ep, value)					       \
	(ECOFF_ROUND((value), ((ep)->a.magic == ECOFF_ZMAGIC ? ECOFF_LDPGSZ :  \
	ECOFF_SEGMENT_ALIGNMENT(ep))))

typedef struct {
	char *loader;
	char exec_path[PATH_MAX];
	char *executable;
	struct nameidata *ndp;

} Osf_Auxargs;

#define	OSF1_EXEC_NAME		(1001)
#define	OSF1_LOADER_NAME	(1002)
#define	OSF1_LOADER_FLAGS	(1003)

#define	DYNAMIC_FLAG		0x3000
#define	DEFAULT_LOADER		"/sbin/loader"

#endif /* !_SYS_EXEC_ECOFF_H_ */