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/* $OpenBSD: exec_aout.c,v 1.2 2000/05/30 21:59:30 mickey Exp $ */
/*
* Copyright (c) 1998 Michael Shalayeff
* 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 Michael Shalayeff.
* 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.
*/
#include "libsa.h"
#include <machine/exec.h>
#include <lib/libsa/exec.h>
int
aout_probe(fd, hdr)
int fd;
union x_header *hdr;
{
return !N_BADMAG(hdr->x_aout);
}
int
aout_load(fd, xp)
int fd;
register struct x_param *xp;
{
register struct exec *x = &xp->xp_hdr->x_aout;
#ifdef EXEC_DEBUG
printf("\nstruct exec {%x, %x, %x, %x, %x, %x, %x, %x}\n",
x->a_midmag, x->a_text, x->a_data, x->a_bss, x->a_syms,
x->a_entry, x->a_trsize, x->a_drsize);
#endif
xp->xp_entry = x->a_entry;
xp->text.foff = N_GETMAGIC(*x) == ZMAGIC? 0: sizeof(*x);
xp->data.foff = xp->text.foff + x->a_text;
xp->bss.foff = 0;
if (x->a_syms) {
xp->sym.foff = xp->data.foff + x->a_data;
xp->str.foff = xp->sym.foff + x->a_syms;
}
xp->text.addr = 0;
xp->data.addr = xp->text.addr + x->a_text;
if (N_GETMAGIC(*x) == NMAGIC)
xp->data.addr += N_PAGSIZ(x)- (xp->data.addr & (N_PAGSIZ(x)-1));
xp->bss.addr = xp->data.addr + x->a_data;
xp->sym.addr = xp->bss.addr + x->a_bss;
xp->str.addr = xp->sym.addr + x->a_syms;
xp->text.size = x->a_text;
xp->data.size = x->a_data;
xp->bss.size = x->a_bss;
xp->sym.size = x->a_syms;
xp->str.size = 0; /* will be hacked later in aout_ldsym() */
return 0;
}
int
aout_ldsym(fd, xp)
int fd;
register struct x_param *xp;
{
char *pa;
u_int i;
/* Symbols */
if (xp->sym.size) {
pa = (char *)xp->xp_end;
*(u_int *)pa = xp->sym.size;
pa += sizeof(u_int);
printf("+[%u", xp->sym.size);
if (read(fd, pa, xp->sym.size) != (ssize_t)xp->sym.size)
return -1;
pa += xp->sym.size;
if (read(fd, pa, sizeof(u_int)) != sizeof(u_int))
return -1;
if ((i = *(u_int *)pa)) {
pa += sizeof(u_int);
i -= sizeof(u_int);
if (read(fd, pa, i) != i)
return -1;
pa += i;
}
/* and that many bytes of string table */
printf("+%d]", i);
xp->xp_end = (u_long)pa;
}
return 0;
}
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