153005Sbostic /*- 2*63160Sbostic * Copyright (c) 1992, 1993 3*63160Sbostic * The Regents of the University of California. All rights reserved. 453005Sbostic * 553005Sbostic * %sccs.include.redist.c% 653005Sbostic * 7*63160Sbostic * @(#)exec.h 8.1 (Berkeley) 06/10/93 853005Sbostic */ 953005Sbostic 1053005Sbostic /* Size of a page in an object file. */ 1153005Sbostic #define __LDPGSZ 4096 1253005Sbostic 1353005Sbostic /* Valid magic number check. */ 1453005Sbostic #define N_BADMAG(ex) \ 1553005Sbostic ((ex).a_magic != NMAGIC && (ex).a_magic != OMAGIC && \ 1653005Sbostic (ex).a_magic != ZMAGIC) 1753005Sbostic 1853005Sbostic /* Address of the bottom of the text segment. */ 1953005Sbostic #define N_TXTADDR(X) 0 2053005Sbostic 2153005Sbostic /* Address of the bottom of the data segment. */ 2253005Sbostic #define N_DATADDR(ex) \ 2353005Sbostic (N_TXTADDR(ex) + ((ex).a_magic == OMAGIC ? (ex).a_text \ 2453005Sbostic : __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1)))) 2553005Sbostic 2653005Sbostic /* Text segment offset. */ 2753005Sbostic #define N_TXTOFF(ex) \ 2853005Sbostic ((ex).a_magic == ZMAGIC ? __LDPGSZ : sizeof(struct exec)) 2953005Sbostic 3053005Sbostic /* Data segment offset. */ 3153005Sbostic #define N_DATOFF(ex) \ 3253005Sbostic (N_TXTOFF(ex) + ((ex).a_magic != ZMAGIC ? (ex).a_text : \ 3353005Sbostic __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1)))) 3453005Sbostic 3553005Sbostic /* Symbol table offset. */ 3653005Sbostic #define N_SYMOFF(ex) \ 3753005Sbostic (N_TXTOFF(ex) + (ex).a_text + (ex).a_data + (ex).a_trsize + \ 3853005Sbostic (ex).a_drsize) 3953005Sbostic 4053005Sbostic /* String table offset. */ 4153005Sbostic #define N_STROFF(ex) (N_SYMOFF(ex) + (ex).a_syms) 4253005Sbostic 4353005Sbostic /* Description of the object file header (a.out format). */ 4453005Sbostic struct exec { 4553005Sbostic #define MID_ZERO 0 /* unknown - implementation dependent */ 4653005Sbostic #define MID_SUN010 1 /* sun 68010/68020 binary */ 4753005Sbostic #define MID_SUN020 2 /* sun 68020-only binary */ 4853005Sbostic #define MID_SUN_SPARC 3 /* sparc binary */ 4953005Sbostic #define MID_HP200 200 /* hp200 (68010) BSD binary */ 5053005Sbostic #define MID_HP300 300 /* hp300 (68020+68881) BSD binary */ 5153005Sbostic #define MID_HPUX 0x20C /* hp200/300 HP-UX binary */ 5253005Sbostic #define MID_HPUX800 0x20B /* hp800 HP-UX binary */ 5353005Sbostic u_short a_mid; /* machine ID */ 5453005Sbostic 5553005Sbostic #define OMAGIC 0407 /* old impure format */ 5653005Sbostic #define NMAGIC 0410 /* read-only text */ 5753005Sbostic #define ZMAGIC 0413 /* demand load format */ 5853005Sbostic u_short a_magic; /* magic number */ 5953005Sbostic 6053005Sbostic u_long a_text; /* text segment size */ 6153005Sbostic u_long a_data; /* initialized data size */ 6253005Sbostic u_long a_bss; /* uninitialized data size */ 6353005Sbostic u_long a_syms; /* symbol table size */ 6453005Sbostic u_long a_entry; /* entry point */ 6553005Sbostic u_long a_trsize; /* text relocation size */ 6653005Sbostic u_long a_drsize; /* data relocation size */ 6753005Sbostic }; 6853005Sbostic #define a_machtype a_mid /* SUN compatibility */ 69