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/* $XFree86: xc/programs/Xserver/hw/xfree86/loader/aout.h,v 1.7 2002/05/31 18:46:00 dawes Exp $ */
/*
* Borrowed from NetBSD's exec_aout.h
*
* Copyright (c) 1993, 1994 Christopher G. Demetriou
* 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 Christopher G. Demetriou.
* 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.
*/
#ifndef _AOUT_H
#define _AOUT_H
#include "Xos.h"
/* Get prototype for ntohl. */
#include <ctype.h>
/* OS/2 EMX has ntohl in this file */
#ifdef __UNIXOS2__
#include <sys/param.h>
#endif
#define __LDPGSZ 4096U
#ifndef AOUT_PAGSIZ
#define AOUT_PAGSIZ(ex) (__LDPGSZ)
#endif
/*
* a.out header
*/
typedef struct AOUT_exec {
unsigned long a_midmag; /* htonl(flags<<26 | mid<<16 | magic) */
unsigned long a_text; /* text segment size */
unsigned long a_data; /* initialized data size */
unsigned long a_bss; /* uninitialized data size */
unsigned long a_syms; /* symbol table size */
unsigned long a_entry; /* entry point */
unsigned long a_trsize; /* text relocation size */
unsigned long a_drsize; /* data relocation size */
} AOUTHDR;
/* a_magic */
#define OMAGIC 0407 /* old impure format */
#define NMAGIC 0410 /* read-only text */
#define ZMAGIC 0413 /* demand load format */
#define QMAGIC 0314 /* "compact" demand load format; deprecated */
/*
* a_mid - keep sorted in numerical order for sanity's sake
* ensure that: 0 < mid < 0x3ff
*/
#define MID_ZERO 0 /* unknown - implementation dependent */
#define MID_SUN010 1 /* sun 68010/68020 binary */
#define MID_SUN020 2 /* sun 68020-only binary */
#define MID_PC386 100 /* 386 PC binary. (so quoth BFD) */
#define MID_HP200 200 /* hp200 (68010) BSD binary */
#define MID_I386 134 /* i386 BSD binary */
#define MID_M68K 135 /* m68k BSD binary with 8K page sizes */
#define MID_M68K4K 136 /* m68k BSD binary with 4K page sizes */
#define MID_NS32532 137 /* ns32532 */
#define MID_SPARC 138 /* sparc */
#define MID_PMAX 139 /* pmax */
#define MID_VAX 140 /* vax */
#define MID_ALPHA 141 /* Alpha BSD binary */
#define MID_MIPS 142 /* big-endian MIPS */
#define MID_ARM6 143 /* ARM6 */
#define MID_HP300 300 /* hp300 (68020+68881) BSD binary */
#define MID_HPUX 0x20C /* hp200/300 HP-UX binary */
#define MID_HPUX800 0x20B /* hp800 HP-UX binary */
/*
* a_flags
*/
#define EX_DYNAMIC 0x20
#define EX_PIC 0x10
#define EX_DPMASK 0x30
/*
* Interpretation of the (a_flags & EX_DPMASK) bits:
*
* 00 traditional executable or object file
* 01 object file contains PIC code (set by `as -k')
* 10 dynamic executable
* 11 position independent executable image
* (eg. a shared library)
*
*/
/*
* The a.out structure's a_midmag field is a network-byteorder encoding
* of this int
* FFFFFFmmmmmmmmmmMMMMMMMMMMMMMMMM
* Where `F' is 6 bits of flag like EX_DYNAMIC,
* `m' is 10 bits of machine-id like MID_I386, and
* `M' is 16 bits worth of magic number, ie. ZMAGIC.
* The macros below will set/get the needed fields.
*/
#define AOUT_GETMAGIC(ex) \
( (((ex)->a_midmag)&0xffff0000U) ? (ntohl(((ex)->a_midmag))&0xffffU) : ((ex)->a_midmag))
#define AOUT_GETMAGIC2(ex) \
( (((ex)->a_midmag)&0xffff0000U) ? (ntohl(((ex)->a_midmag))&0xffffU) : \
(((ex)->a_midmag) | 0x10000) )
#define AOUT_GETMID(ex) \
( (((ex)->a_midmag)&0xffff0000U) ? ((ntohl(((ex)->a_midmag))>>16)&0x03ffU) : MID_ZERO )
#define AOUT_GETFLAG(ex) \
( (((ex)->a_midmag)&0xffff0000U) ? ((ntohl(((ex)->a_midmag))>>26)&0x3fU) : 0 )
#define AOUT_SETMAGIC(ex,mag,mid,flag) \
( (ex)->a_midmag = htonl( (((flag)&0x3fU)<<26) | (((mid)&0x03ffU)<<16) | \
(((mag)&0xffffU)) ) )
#define AOUT_ALIGN(ex,x) \
(AOUT_GETMAGIC(ex) == ZMAGIC || AOUT_GETMAGIC(ex) == QMAGIC ? \
((x) + __LDPGSZ - 1) & ~(__LDPGSZ - 1) : (x))
/* Valid magic number check. */
#define AOUT_BADMAG(ex) \
(AOUT_GETMAGIC(ex) != NMAGIC && AOUT_GETMAGIC(ex) != OMAGIC && \
AOUT_GETMAGIC(ex) != ZMAGIC && AOUT_GETMAGIC(ex) != QMAGIC)
/* Address of the bottom of the text segment. */
#define AOUT_TXTADDR(ex) (AOUT_GETMAGIC2(ex) == (ZMAGIC|0x10000) ? 0 : __LDPGSZ)
/* Address of the bottom of the data segment. */
#define AOUT_DATADDR(ex) \
(AOUT_GETMAGIC(ex) == OMAGIC ? AOUT_TXTADDR(ex) + (ex)->a_text : \
(AOUT_TXTADDR(ex) + (ex)->a_text + __LDPGSZ - 1) & ~(__LDPGSZ - 1))
/* Address of the bottom of the bss segment. */
#define AOUT_BSSADDR(ex) \
(AOUT_DATADDR(ex) + (ex)->a_data)
/* Text segment offset. */
#define AOUT_TXTOFF(ex) \
( AOUT_GETMAGIC2(ex)==ZMAGIC || AOUT_GETMAGIC2(ex)==(QMAGIC|0x10000) ? \
0 : (AOUT_GETMAGIC2(ex)==(ZMAGIC|0x10000) ? __LDPGSZ : \
sizeof(struct AOUT_exec)) )
/* Data segment offset. */
#define AOUT_DATOFF(ex) \
AOUT_ALIGN(ex, AOUT_TXTOFF(ex) + (ex)->a_text)
/* Text relocation table offset. */
#define AOUT_TRELOFF(ex) \
(AOUT_DATOFF(ex) + (ex)->a_data)
/* Data relocation table offset. */
#define AOUT_DRELOFF(ex) \
(AOUT_TRELOFF(ex) + (ex)->a_trsize)
/* Symbol table offset. */
#define AOUT_SYMOFF(ex) \
(AOUT_DRELOFF(ex) + (ex)->a_drsize)
/* String table offset. */
#define AOUT_STROFF(ex) \
(AOUT_SYMOFF(ex) + (ex)->a_syms)
/* Relocation format. */
struct relocation_info_i386 {
int r_address; /* offset in text or data segment */
unsigned int r_symbolnum : 24, /* ordinal number of add symbol */
r_pcrel : 1, /* 1 if value should be pc-relative */
r_length : 2, /* log base 2 of value's width */
r_extern : 1, /* 1 if need to add symbol to value */
r_baserel : 1, /* linkage table relative */
r_jmptable : 1, /* relocate to jump table */
r_relative : 1, /* load address relative */
r_copy : 1; /* run time copy */
};
#define relocation_info relocation_info_i386
/*
* Symbol table entry format. The #ifdef's are so that programs including
* nlist.h can initialize nlist structures statically.
*/
typedef struct AOUT_nlist {
union {
char *n_name; /* symbol name (in memory) */
long n_strx; /* file string table offset (on disk) */
} n_un;
#define AOUT_UNDF 0x00 /* undefined */
#define AOUT_ABS 0x02 /* absolute address */
#define AOUT_TEXT 0x04 /* text segment */
#define AOUT_DATA 0x06 /* data segment */
#define AOUT_BSS 0x08 /* bss segment */
#define AOUT_INDR 0x0a /* alias definition */
#define AOUT_SIZE 0x0c /* pseudo type, defines a symbol's size */
#define AOUT_COMM 0x12 /* common reference */
#define AOUT_FN 0x1e /* file name (AOUT_EXT on) */
#define AOUT_WARN 0x1e /* warning message (AOUT_EXT off) */
#define AOUT_EXT 0x01 /* external (global) bit, OR'ed in */
#define AOUT_TYPE 0x1e /* mask for all the type bits */
unsigned char n_type; /* type defines */
char n_other; /* spare */
#define n_hash n_desc /* used internally by ld(1); XXX */
short n_desc; /* used by stab entries */
unsigned long n_value; /* address/value of the symbol */
} AOUT_nlist;
#define AOUT_FORMAT "%08x" /* namelist value format; XXX */
#define AOUT_STAB 0x0e0 /* mask for debugger symbols -- stab(5) */
#endif
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