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https://github.com/openbsd/src.git
synced 2024-12-21 23:18:00 -08:00
a.out is no longer the commonly encountered binary file format, the world has
moved to ELF. Move the a.out specific defines and macros, but the MID_xxx values, from <sys/exec.h> to <a.out.h>, and update the few userland binaries which really need these defines (i.e. boot-related tools for old architectures) to explicitly include <a.out.h> when needed. "Fine" deraadt@
This commit is contained in:
miod
parent
5a69559862
commit
ce1663765c
@ -1,4 +1,4 @@
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/* $OpenBSD: more.c,v 1.41 2019/06/28 13:32:52 deraadt Exp $ */
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/* $OpenBSD: more.c,v 1.42 2024/10/16 18:47:47 miod Exp $ */
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/*
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* Copyright (c) 2003 Todd C. Miller <millert@openbsd.org>
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@ -63,10 +63,10 @@
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*/
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#include <sys/types.h>
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#include <sys/exec.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <a.out.h>
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#include <ctype.h>
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#include <curses.h>
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#include <errno.h>
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114
include/a.out.h
114
include/a.out.h
@ -1,4 +1,4 @@
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/* $OpenBSD: a.out.h,v 1.3 2003/06/02 19:34:12 millert Exp $ */
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/* $OpenBSD: a.out.h,v 1.4 2024/10/16 18:47:48 miod Exp $ */
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/* $NetBSD: a.out.h,v 1.15 1994/10/26 00:55:42 cgd Exp $ */
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/*-
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@ -36,6 +36,118 @@
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#ifndef _AOUT_H_
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#define _AOUT_H_
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/*
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* Legacy a.out structures and defines.
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*/
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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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u_int32_t a_midmag; /* htonl(flags<<26|mid<<16|magic) */
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u_int32_t a_text; /* text segment size */
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u_int32_t a_data; /* initialized data size */
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u_int32_t a_bss; /* uninitialized data size */
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u_int32_t a_syms; /* symbol table size */
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u_int32_t a_entry; /* entry point */
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u_int32_t a_trsize; /* text relocation size */
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u_int32_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_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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#include <sys/exec.h>
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#define _AOUT_INCLUDE_
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@ -1,4 +1,4 @@
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/* $OpenBSD: mkboot.c,v 1.21 2017/12/30 23:08:29 guenther Exp $ */
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/* $OpenBSD: mkboot.c,v 1.22 2024/10/16 18:47:48 miod Exp $ */
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/*
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* Copyright (c) 1990, 1993
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@ -32,11 +32,11 @@
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*/
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#include <sys/param.h>
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#include <sys/exec.h>
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#include <sys/exec_elf.h>
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#include <sys/stat.h>
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#include <a.out.h>
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#include <ctype.h>
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#include <elf.h>
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#include <err.h>
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#include <fcntl.h>
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#include <stdlib.h>
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120
sys/sys/exec.h
120
sys/sys/exec.h
@ -1,4 +1,4 @@
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/* $OpenBSD: exec.h,v 1.54 2024/04/02 08:39:16 deraadt Exp $ */
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/* $OpenBSD: exec.h,v 1.55 2024/10/16 18:47:48 miod Exp $ */
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/* $NetBSD: exec.h,v 1.59 1996/02/09 18:25:09 christos Exp $ */
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/*-
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@ -222,38 +222,6 @@ extern int stackgap_random;
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#endif /* _KERNEL */
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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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* Legacy a.out structures and defines; start deleting these when
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* external use no longer exist.
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*/
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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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u_int32_t a_midmag; /* htonl(flags<<26|mid<<16|magic) */
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u_int32_t a_text; /* text segment size */
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u_int32_t a_data; /* initialized data size */
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u_int32_t a_bss; /* uninitialized data size */
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u_int32_t a_syms; /* symbol table size */
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u_int32_t a_entry; /* entry point */
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u_int32_t a_trsize; /* text relocation size */
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u_int32_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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@ -292,92 +260,6 @@ struct exec {
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#define MID_HPPA11 0x210 /* hp700 HP-UX binary pa1.1 */
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#define MID_HPPA20 0x214 /* hp700 HP-UX binary pa2.0 */
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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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#include <machine/exec.h>
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#endif /* !_SYS_EXEC_H_ */
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@ -1,4 +1,4 @@
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/* $OpenBSD: file.c,v 1.19 2017/10/29 08:45:53 mpi Exp $ */
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/* $OpenBSD: file.c,v 1.20 2024/10/16 18:47:48 miod Exp $ */
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/*
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* Copyright (c) 1995-96 Mats O Jansson. All rights reserved.
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@ -32,7 +32,7 @@
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#ifndef NOAOUT
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#if defined(__OpenBSD__)
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#include <sys/exec.h>
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#include <a.out.h>
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#endif
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#if defined(__bsdi__)
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#define NOAOUT
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@ -1,4 +1,4 @@
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/* $OpenBSD: mopa.out.c,v 1.18 2022/12/28 21:30:17 jmc Exp $ */
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/* $OpenBSD: mopa.out.c,v 1.19 2024/10/16 18:47:48 miod Exp $ */
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/*
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* mopa.out - Convert a Unix format kernel into something that
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@ -53,7 +53,7 @@
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#include "common/mopdef.h"
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#include "common/file.h"
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#if defined(__OpenBSD__)
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#include <sys/exec.h>
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#include <a.out.h>
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#endif
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#if defined(__FreeBSD__)
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#include <sys/imgact_aout.h>
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