/* $OpenBSD: a.out.h,v 1.4 2024/10/16 18:47:48 miod Exp $ */ /* $NetBSD: a.out.h,v 1.15 1994/10/26 00:55:42 cgd Exp $ */ /*- * Copyright (c) 1993 Theo de Raadt * Copyright (c) 1991 The Regents of the University of California. * 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. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * @(#)a.out.h 5.6 (Berkeley) 4/30/91 */ #ifndef _AOUT_H_ #define _AOUT_H_ /* * Legacy a.out structures and defines. */ /* * Header prepended to each a.out file. * only manipulate the a_midmag field via the * N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros below. */ struct exec { u_int32_t a_midmag; /* htonl(flags<<26|mid<<16|magic) */ u_int32_t a_text; /* text segment size */ u_int32_t a_data; /* initialized data size */ u_int32_t a_bss; /* uninitialized data size */ u_int32_t a_syms; /* symbol table size */ u_int32_t a_entry; /* entry point */ u_int32_t a_trsize; /* text relocation size */ u_int32_t a_drsize; /* data relocation size */ }; /* 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_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 N_GETMAGIC(ex) \ ( (((ex).a_midmag)&0xffff0000) ? (ntohl(((ex).a_midmag))&0xffff) : ((ex).a_midmag)) #define N_GETMAGIC2(ex) \ ( (((ex).a_midmag)&0xffff0000) ? (ntohl(((ex).a_midmag))&0xffff) : \ (((ex).a_midmag) | 0x10000) ) #define N_GETMID(ex) \ ( (((ex).a_midmag)&0xffff0000) ? ((ntohl(((ex).a_midmag))>>16)&0x03ff) : MID_ZERO ) #define N_GETFLAG(ex) \ ( (((ex).a_midmag)&0xffff0000) ? ((ntohl(((ex).a_midmag))>>26)&0x3f) : 0 ) #define N_SETMAGIC(ex,mag,mid,flag) \ ( (ex).a_midmag = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \ (((mag)&0xffff)) ) ) #define N_ALIGN(ex,x) \ (N_GETMAGIC(ex) == ZMAGIC || N_GETMAGIC(ex) == QMAGIC ? \ ((x) + __LDPGSZ - 1) & ~(__LDPGSZ - 1) : (x)) /* Valid magic number check. */ #define N_BADMAG(ex) \ (N_GETMAGIC(ex) != NMAGIC && N_GETMAGIC(ex) != OMAGIC && \ N_GETMAGIC(ex) != ZMAGIC && N_GETMAGIC(ex) != QMAGIC) /* Address of the bottom of the text segment. */ #define N_TXTADDR(ex) (N_GETMAGIC2(ex) == (ZMAGIC|0x10000) ? 0 : __LDPGSZ) /* Address of the bottom of the data segment. */ #define N_DATADDR(ex) \ (N_GETMAGIC(ex) == OMAGIC ? N_TXTADDR(ex) + (ex).a_text : \ (N_TXTADDR(ex) + (ex).a_text + __LDPGSZ - 1) & ~(__LDPGSZ - 1)) /* Address of the bottom of the bss segment. */ #define N_BSSADDR(ex) \ (N_DATADDR(ex) + (ex).a_data) /* Text segment offset. */ #define N_TXTOFF(ex) \ ( N_GETMAGIC2(ex)==ZMAGIC || N_GETMAGIC2(ex)==(QMAGIC|0x10000) ? \ 0 : (N_GETMAGIC2(ex)==(ZMAGIC|0x10000) ? __LDPGSZ : \ sizeof(struct exec)) ) /* Data segment offset. */ #define N_DATOFF(ex) \ N_ALIGN(ex, N_TXTOFF(ex) + (ex).a_text) /* Text relocation table offset. */ #define N_TRELOFF(ex) \ (N_DATOFF(ex) + (ex).a_data) /* Data relocation table offset. */ #define N_DRELOFF(ex) \ (N_TRELOFF(ex) + (ex).a_trsize) /* Symbol table offset. */ #define N_SYMOFF(ex) \ (N_DRELOFF(ex) + (ex).a_drsize) /* String table offset. */ #define N_STROFF(ex) \ (N_SYMOFF(ex) + (ex).a_syms) #include <sys/exec.h> #define _AOUT_INCLUDE_ #include <nlist.h> #endif /* !_AOUT_H_ */
