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      1 /* $NetBSD: exec_coff.h,v 1.7 2005/12/11 12:25:20 christos Exp $ */
      2 
      3 /*-
      4  * Copyright (C) 2000 SAITOH Masanobu.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. The name of the author may not be used to endorse or promote products
     15  *    derived from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _SYS_EXEC_COFF_H_
     30 #define _SYS_EXEC_COFF_H_
     31 
     32 #include <machine/coff_machdep.h>
     33 
     34 /*
     35  * COFF file header
     36  */
     37 
     38 struct coff_filehdr {
     39 	u_short	f_magic;	/* magic number */
     40 	u_short	f_nscns;	/* # of sections */
     41 	long	f_timdat;	/* timestamp */
     42 	long	f_symptr;	/* file offset of symbol table */
     43 	long	f_nsyms;	/* # of symbol table entries */
     44 	u_short	f_opthdr;	/* size of optional header */
     45 	u_short	f_flags;	/* flags */
     46 };
     47 
     48 /* f_flags */
     49 #define COFF_F_RELFLG	0x1
     50 #define COFF_F_EXEC	0x2
     51 #define COFF_F_LNNO	0x4
     52 #define COFF_F_LSYMS	0x8
     53 #define COFF_F_SWABD	0x40
     54 #define COFF_F_AR16WR	0x80
     55 #define COFF_F_AR32WR	0x100
     56 #define COFF_F_AR32W	0x200
     57 
     58 /*
     59  * COFF system header
     60  */
     61 
     62 struct coff_aouthdr {
     63 	short	a_magic;
     64 	short	a_vstamp;
     65 	long	a_tsize;
     66 	long	a_dsize;
     67 	long	a_bsize;
     68 	long	a_entry;
     69 	long	a_tstart;
     70 	long	a_dstart;
     71 };
     72 
     73 /*
     74  * COFF section header
     75  */
     76 
     77 struct coff_scnhdr {
     78 	char	s_name[8];
     79 	long	s_paddr;
     80 	long	s_vaddr;
     81 	long	s_size;
     82 	long	s_scnptr;
     83 	long	s_relptr;
     84 	long	s_lnnoptr;
     85 	u_short	s_nreloc;
     86 	u_short	s_nlnno;
     87 	long	s_flags;
     88 };
     89 
     90 /* s_flags */
     91 #define COFF_STYP_REG		0x00
     92 #define COFF_STYP_DSECT		0x01
     93 #define COFF_STYP_NOLOAD	0x02
     94 #define COFF_STYP_GROUP		0x04
     95 #define COFF_STYP_PAD		0x08
     96 #define COFF_STYP_COPY		0x10
     97 #define COFF_STYP_TEXT		0x20
     98 #define COFF_STYP_DATA		0x40
     99 #define COFF_STYP_BSS		0x80
    100 #define COFF_STYP_INFO		0x200
    101 #define COFF_STYP_OVER		0x400
    102 #define COFF_STYP_SHLIB		0x800
    103 
    104 /*
    105  * COFF shared library header
    106  */
    107 
    108 struct coff_slhdr {
    109 	long	entry_len;	/* in words */
    110 	long	path_index;	/* in words */
    111 	char	sl_name[1];
    112 };
    113 
    114 struct coff_exechdr {
    115 	struct coff_filehdr f;
    116 	struct coff_aouthdr a;
    117 };
    118 
    119 #define COFF_ROUND(val, by)     (((val) + by - 1) & ~(by - 1))
    120 
    121 #define COFF_ALIGN(a) ((a) & ~(COFF_LDPGSZ - 1))
    122 
    123 #define COFF_HDR_SIZE \
    124 	(sizeof(struct coff_filehdr) + sizeof(struct coff_aouthdr))
    125 
    126 #define COFF_BLOCK_ALIGN(ap, value) \
    127         ((ap)->a_magic == COFF_ZMAGIC ? COFF_ROUND(value, COFF_LDPGSZ) : \
    128          value)
    129 
    130 #define COFF_TXTOFF(fp, ap) \
    131         ((ap)->a_magic == COFF_ZMAGIC ? 0 : \
    132          COFF_ROUND(COFF_HDR_SIZE + (fp)->f_nscns * \
    133 		    sizeof(struct coff_scnhdr), \
    134 		    COFF_SEGMENT_ALIGNMENT(fp, ap)))
    135 
    136 #define COFF_DATOFF(fp, ap) \
    137         (COFF_BLOCK_ALIGN(ap, COFF_TXTOFF(fp, ap) + (ap)->a_tsize))
    138 
    139 #define COFF_SEGMENT_ALIGN(fp, ap, value) \
    140         (COFF_ROUND(value, ((ap)->a_magic == COFF_ZMAGIC ? COFF_LDPGSZ : \
    141          COFF_SEGMENT_ALIGNMENT(fp, ap))))
    142 
    143 #ifdef _KERNEL
    144 int     exec_coff_makecmds(struct lwp *, struct exec_package *);
    145 
    146 int	exec_coff_prep_omagic(struct lwp *, struct exec_package *,
    147 				struct coff_filehdr *,
    148 				struct coff_aouthdr *);
    149 int	exec_coff_prep_nmagic(struct lwp *, struct exec_package *,
    150 				struct coff_filehdr *,
    151 				struct coff_aouthdr *);
    152 int	exec_coff_prep_zmagic(struct lwp *, struct exec_package *,
    153 				struct coff_filehdr *,
    154 				struct coff_aouthdr *);
    155 #endif /* _KERNEL */
    156 #endif /* !_SYS_EXEC_COFF_H_ */
    157