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Diffstat (limited to 'hw/xfree86/loader/aout.h')
| -rw-r--r-- | hw/xfree86/loader/aout.h | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/hw/xfree86/loader/aout.h b/hw/xfree86/loader/aout.h new file mode 100644 index 000000000..2e58f2cab --- /dev/null +++ b/hw/xfree86/loader/aout.h @@ -0,0 +1,232 @@ +/* $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 |