/* $XFree86: xc/programs/Xserver/hw/xfree86/loader/aout.h,v 1.8 2003/10/15 16:29:02 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