/*	$NetBSD: ibcs2_exec.h,v 1.14 2005/12/11 12:20:02 christos Exp $	*/

/*
 * Copyright (c) 1994, 1995, 1998 Scott Bartram
 * All rights reserved.
 *
 * adapted from sys/sys/exec_ecoff.h
 * based on Intel iBCS2
 *
 * 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. 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.
 */

#ifndef	_IBCS2_EXEC_H_
#define	_IBCS2_EXEC_H_

/*
 * COFF file header
 */

/* f_magic flags */
/* defined in <machine/ibcs2_machdep.h> */

/* magic */
#define COFF_OMAGIC	0407	/* text not write-protected; data seg
				   is contiguous with text */
#define COFF_NMAGIC	0410	/* text is write-protected; data starts
				   at next seg following text */
#define COFF_ZMAGIC	0413	/* text and data segs are aligned for
				   direct paging */
#define COFF_SMAGIC	0443	/* shared lib */

#define COFF_SEGMENT_ALIGNMENT(fp, ap)	4

#define IBCS2_HIGH_SYSCALL(n)		(((n) & 0x7f) == 0x28 && ((n) >> 8) > 0)
#define IBCS2_CVT_HIGH_SYSCALL(n)	(((n) >> 8) + 200)

struct exec_package;
int     exec_ibcs2_coff_makecmds __P((struct lwp *, struct exec_package *));

/*
 * x.out (XENIX)
 */

struct xexec {
	u_short	x_magic;	/* magic number */
	u_short	x_ext;		/* size of extended header */
	long	x_text;		/* ignored */
	long	x_data;		/* ignored */
	long	x_bss;		/* ignored */
	long	x_syms;		/* ignored */
	long	x_reloc;	/* ignored */
	long	x_entry;	/* executable entry point */
	char	x_cpu;		/* processor type */
	char	x_relsym;	/* ignored */
	u_short	x_renv;		/* flags */
};

/* x_magic flags */
#define XOUT_MAGIC	0x0206

/* x_cpu flags */
#define XC_386		0x004a	/* 386, word-swapped */

/* x_renv flags */
#define XE_V5		0xc000
#define XE_SEG		0x0800
#define XE_ABS		0x0400
#define XE_ITER		0x0200
#define XE_VMOD		0x0100
#define XE_FPH		0x0080
#define XE_LTEXT	0x0040
#define XE_LDATA	0x0020
#define XE_OVER		0x0010
#define XE_FS		0x0008
#define XE_PURE		0x0004
#define XE_SEP		0x0002
#define XE_EXEC		0x0001

/*
 * x.out extended header
 */

struct xext {
	long	xe_trsize;	/* ignored */
	long	xe_drsize;	/* ignored */
	long	xe_tbase;	/* ignored */
	long	xe_dbase;	/* ignored */
	long	xe_stksize;	/* stack size if XE_FS set in x_renv */
	long	xe_segpos;	/* offset of segment table */
	long	xe_segsize;	/* segment table size */
	long	xe_mdtpos;	/* ignored */
	long	xe_mdtsize;	/* ignored */
	char	xe_mdttype;	/* ignored */
	char	xe_pagesize;	/* ignored */
	char	xe_ostype;	/* ignored */
	char	xe_osvers;	/* ignored */
	u_short	xe_eseg;	/* ignored */
	u_short	xe_sres;	/* ignored */
};

/*
 * x.out segment table
 */

struct xseg {
	u_short	xs_type;	/* segment type */
	u_short	xs_attr;	/* attribute flags */
	u_short	xs_seg;		/* segment selector number */
	char	xs_align;	/* ignored */
	char	xs_cres;	/* ignored */
	long	xs_filpos;	/* offset of this segment */
	long	xs_psize;	/* physical segment size */
	long	xs_vsize;	/* virtual segment size */
	long	xs_rbase;	/* relocation base address */
	u_short	xs_noff;	/* ignored */
	u_short	xs_sres;	/* ignored */
	long	xs_lres;	/* ignored */
};

/* xs_type flags */
#define	XS_TNULL	0	/* unused */
#define	XS_TTEXT	1	/* text (read-only) */
#define	XS_TDATA	2	/* data (read-write) */
#define	XS_TSYMS	3	/* symbol table (noload) */
#define	XS_TREL		4	/* relocation segment (noload) */
#define	XS_TSESTR	5	/* string table (noload) */
#define	XS_TGRPS	6	/* group segment (noload) */

#define	XS_TIDATA	64
#define	XS_TTSS		65
#define	XS_TLFIX	66
#define	XS_TDNAME	67
#define	XS_TDTEXT	68
#define	XS_TDFIX	69
#define	XS_TOVTAB	70
#define	XS_T71		71
#define	XS_TSYSTR	72

/* xs_attr flags */
#define XS_AMEM		0x8000	/* memory image */
#define XS_AITER	0x0001	/* iteration records */
#define XS_AHUGE	0x0002	/* unused */
#define XS_ABSS		0x0004	/* uninitialized data */
#define XS_APURE	0x0008	/* read-only (sharable) segment */
#define XS_AEDOWN	0x0010	/* expand down memory segment */
#define XS_APRIV	0x0020	/* unused */
#define	XS_A32BIT	0x0040	/* 32-bit text/data */

/*
 * x.out iteration record
 */

struct xiter {
	long	xi_size;	/* text/data size */
	long	xi_rep;		/* number of replications */
	long	xi_offset;	/* offset within segment to replicated data */
};

extern const struct emul emul_ibcs2;

#define XOUT_HDR_SIZE		(sizeof(struct xexec) + sizeof(struct xext))

int     exec_ibcs2_xout_makecmds __P((struct lwp *, struct exec_package *));
int	ibcs2_exec_setup_stack __P((struct lwp *, struct exec_package *));

#ifdef EXEC_ELF32
int	ibcs2_elf32_probe __P((struct lwp *, struct exec_package *,
			       void *, char *, vaddr_t *));
#endif

/* following two are used for indication of executable type */
#define	IBCS2_EXEC_XENIX	((void *)0x01)	/* XENIX x.out executable */
#define	IBCS2_EXEC_OTHER	((void *)0x02)	/* something else */

#endif /* !_IBCS2_EXEC_H_ */