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dpavlin |
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/* gxemul: $Id: exec_aout.h,v 1.3 2005/03/05 12:34:02 debug Exp $ */ |
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#ifndef __EXEC_AOUT_H |
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#define __EXEC_AOUT_H |
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/* $OpenBSD: exec_aout.h,v 1.9 1998/04/25 06:28:14 niklas Exp $ */ |
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/* $NetBSD: exec_aout.h,v 1.15 1996/05/18 17:20:54 christos Exp $ */ |
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/* |
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* Copyright (c) 1993, 1994 Christopher G. Demetriou |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* This product includes software developed by Christopher G. Demetriou. |
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* 4. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#ifndef N_PAGSIZ |
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#define N_PAGSIZ(ex) (__LDPGSZ) |
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#endif |
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/* |
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* Header prepended to each a.out file. |
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* only manipulate the a_midmag field via the |
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* N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros below. |
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*/ |
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struct exec { |
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uint32_t a_midmag; /* htonl(flags<<26|mid<<16|magic) */ |
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uint32_t a_text; /* text segment size */ |
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uint32_t a_data; /* initialized data size */ |
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uint32_t a_bss; /* uninitialized data size */ |
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uint32_t a_syms; /* symbol table size */ |
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uint32_t a_entry; /* entry point */ |
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uint32_t a_trsize; /* text relocation size */ |
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uint32_t a_drsize; /* data relocation size */ |
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}; |
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/* a_magic */ |
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#define OMAGIC 0407 /* old impure format */ |
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#define NMAGIC 0410 /* read-only text */ |
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#define ZMAGIC 0413 /* demand load format */ |
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#define QMAGIC 0314 /* "compact" demand load format; deprecated */ |
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/* |
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* a_mid - keep sorted in numerical order for sanity's sake |
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* ensure that: 0 < mid < 0x3ff |
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*/ |
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#define MID_ZERO 0 /* unknown - implementation dependent */ |
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#define MID_SUN010 1 /* sun 68010/68020 binary */ |
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#define MID_SUN020 2 /* sun 68020-only binary */ |
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#define MID_PC386 100 /* 386 PC binary. (so quoth BFD) */ |
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#define MID_ROMPAOS 104 /* old IBM RT */ |
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#define MID_I386 134 /* i386 BSD binary */ |
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#define MID_M68K 135 /* m68k BSD binary with 8K page sizes */ |
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#define MID_M68K4K 136 /* DO NOT USE: m68k BSD binary with 4K page sizes */ |
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#define MID_NS32532 137 /* ns32532 */ |
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#define MID_SPARC 138 /* sparc */ |
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#define MID_PMAX 139 /* pmax */ |
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#define MID_VAX 140 /* vax */ |
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#define MID_ALPHA 141 /* Alpha BSD binary */ |
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#define MID_MIPS 142 /* big-endian MIPS */ |
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#define MID_ARM6 143 /* ARM6 */ |
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#define MID_ROMP 149 /* IBM RT */ |
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#define MID_M88K 151 /* m88k BSD binary */ |
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#define MID_HP200 200 /* hp200 (68010) BSD binary */ |
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#define MID_HP300 300 /* hp300 (68020+68881) BSD binary */ |
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#define MID_HPUX 0x20C /* hp200/300 HP-UX binary */ |
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#define MID_HPUX800 0x20B /* hp800 HP-UX binary */ |
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/* |
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* a_flags |
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*/ |
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#define EX_DYNAMIC 0x20 |
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#define EX_PIC 0x10 |
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#define EX_DPMASK 0x30 |
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/* |
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* Interpretation of the (a_flags & EX_DPMASK) bits: |
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* |
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* 00 traditional executable or object file |
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* 01 object file contains PIC code (set by `as -k') |
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* 10 dynamic executable |
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* 11 position independent executable image |
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* (eg. a shared library) |
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* |
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*/ |
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/* |
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* The a.out structure's a_midmag field is a network-byteorder encoding |
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* of this int |
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* FFFFFFmmmmmmmmmmMMMMMMMMMMMMMMMM |
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* Where `F' is 6 bits of flag like EX_DYNAMIC, |
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* `m' is 10 bits of machine-id like MID_I386, and |
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* `M' is 16 bits worth of magic number, ie. ZMAGIC. |
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* The macros below will set/get the needed fields. |
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*/ |
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#define N_GETMAGIC(ex) \ |
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( (((ex).a_midmag)&0xffff0000) ? (ntohl(((ex).a_midmag))&0xffff) : ((ex).a_midmag)) |
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#define N_GETMAGIC2(ex) \ |
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( (((ex).a_midmag)&0xffff0000) ? (ntohl(((ex).a_midmag))&0xffff) : \ |
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(((ex).a_midmag) | 0x10000) ) |
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#define N_GETMID(ex) \ |
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( (((ex).a_midmag)&0xffff0000) ? ((ntohl(((ex).a_midmag))>>16)&0x03ff) : MID_ZERO ) |
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#define N_GETFLAG(ex) \ |
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( (((ex).a_midmag)&0xffff0000) ? ((ntohl(((ex).a_midmag))>>26)&0x3f) : 0 ) |
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#define N_SETMAGIC(ex,mag,mid,flag) \ |
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( (ex).a_midmag = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \ |
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(((mag)&0xffff)) ) ) |
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#define N_ALIGN(ex,x) \ |
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(N_GETMAGIC(ex) == ZMAGIC || N_GETMAGIC(ex) == QMAGIC ? \ |
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((x) + __LDPGSZ - 1) & ~(__LDPGSZ - 1) : (x)) |
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/* Valid magic number check. */ |
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#define N_BADMAG(ex) \ |
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(N_GETMAGIC(ex) != NMAGIC && N_GETMAGIC(ex) != OMAGIC && \ |
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N_GETMAGIC(ex) != ZMAGIC && N_GETMAGIC(ex) != QMAGIC) |
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/* Address of the bottom of the text segment. */ |
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#define N_TXTADDR(ex) (N_GETMAGIC2(ex) == (ZMAGIC|0x10000) ? 0 : __LDPGSZ) |
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/* Address of the bottom of the data segment. */ |
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#define N_DATADDR(ex) \ |
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(N_GETMAGIC(ex) == OMAGIC ? N_TXTADDR(ex) + (ex).a_text : \ |
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(N_TXTADDR(ex) + (ex).a_text + __LDPGSZ - 1) & ~(__LDPGSZ - 1)) |
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/* Address of the bottom of the bss segment. */ |
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#define N_BSSADDR(ex) \ |
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(N_DATADDR(ex) + (ex).a_data) |
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/* Text segment offset. */ |
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#define N_TXTOFF(ex) \ |
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( N_GETMAGIC2(ex)==ZMAGIC || N_GETMAGIC2(ex)==(QMAGIC|0x10000) ? \ |
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0 : (N_GETMAGIC2(ex)==(ZMAGIC|0x10000) ? __LDPGSZ : \ |
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sizeof(struct exec)) ) |
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/* Data segment offset. */ |
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#define N_DATOFF(ex) \ |
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N_ALIGN(ex, N_TXTOFF(ex) + (ex).a_text) |
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/* Text relocation table offset. */ |
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#define N_TRELOFF(ex) \ |
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(N_DATOFF(ex) + (ex).a_data) |
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/* Data relocation table offset. */ |
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#define N_DRELOFF(ex) \ |
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(N_TRELOFF(ex) + (ex).a_trsize) |
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/* Symbol table offset. */ |
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#define N_SYMOFF(ex) \ |
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(N_DRELOFF(ex) + (ex).a_drsize) |
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/* String table offset. */ |
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#define N_STROFF(ex) \ |
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(N_SYMOFF(ex) + (ex).a_syms) |
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#ifdef _KERNEL |
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/* the "a.out" format's entry in the exec switch */ |
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int exec_aout_makecmds __P((struct proc *, struct exec_package *)); |
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/* functions which prepare various a.out executable types */ |
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/* |
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* MI portion |
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*/ |
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int exec_aout_prep_zmagic __P((struct proc *, struct exec_package *)); |
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int exec_aout_prep_nmagic __P((struct proc *, struct exec_package *)); |
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int exec_aout_prep_omagic __P((struct proc *, struct exec_package *)); |
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/* For compatibility modules */ |
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int exec_aout_prep_oldzmagic __P((struct proc *, struct exec_package *)); |
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int exec_aout_prep_oldnmagic __P((struct proc *, struct exec_package *)); |
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int exec_aout_prep_oldomagic __P((struct proc *, struct exec_package *)); |
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/* |
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* MD portion |
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*/ |
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int cpu_exec_aout_makecmds __P((struct proc *, struct exec_package *)); |
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#endif /* _KERNEL */ |
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#endif /* __EXEC_AOUT_H */ |
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