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/*-
* Copyright (c) 1998-1999 Andrew Gallatin
* All rights reserved.
*
* Based heavily on linux_sysvec.c
* Which is Copyright (c) 1994-1996 Søren Schmidt
*
* 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
* in this position and unchanged.
* 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. The name of the author may not be used to endorse or promote products
* derived from this software withough 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.
*
* $FreeBSD$
*/
/* XXX we use functions that might not exist. */
#include "opt_compat.h"
#ifndef COMPAT_43
#error "Unable to compile Osf1-emulator due to missing COMPAT_43 option!"
#endif
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/sysent.h>
#include <sys/imgact.h>
#include <sys/imgact_aout.h>
#include <sys/imgact_elf.h>
#include <sys/malloc.h>
#include <alpha/osf1/exec_ecoff.h>
#include <alpha/osf1/osf1_signal.h>
#include <alpha/osf1/osf1_syscall.h>
#include <alpha/osf1/osf1_util.h>
#include <alpha/osf1/osf1.h>
int osf1_szsigcode;
extern char sigcode[];
static int osf1_freebsd_fixup __P((long **stack_base,
struct image_params *imgp));
struct sysentvec osf1_sysvec = {
OSF1_SYS_MAXSYSCALL,
osf1_sysent,
0x0,
NSIG,
bsd_to_osf1_sig,
0,
0,
0, /* trap-to-signal translation function */
osf1_freebsd_fixup, /* fixup */
osf1_sendsig,
sigcode, /* use generic trampoline */
&osf1_szsigcode, /* use generic trampoline size */
0, /* prepsyscall */
"OSF/1 ECOFF",
NULL /* we don't have an ECOFF coredump function */
};
/*
* Do some magic to setup the stack properly for the osf1 dynamic loader
* OSF/1 binaries need an auxargs vector describing the name of the
* executable (must be a full path).
*
* If we're executing a dynamic binary, the loader will expect its
* name, /sbin/loader, to be in the auxargs vectore as well.
* Bear in mind that when we execute a dynamic binary, we begin by
* executing the loader. The loader then takes care of mapping
* executable (which is why it needs the full path)
* and its requisite shared libs, then it transfers control
* to the executable after calling set_program_attributes().
*/
#define AUXARGS_ENTRY(pos, id, val) {suword(pos++, id); suword(pos++, val);}
static int
osf1_freebsd_fixup(long **stack_base, struct image_params *imgp)
{
char *destp;
int sz;
long *pos;
struct ps_strings *arginfo;
Osf_Auxargs *args;
args = (Osf_Auxargs *)imgp->auxargs;
pos = *stack_base + (imgp->argc + imgp->envc + 2);
arginfo = (struct ps_strings *)PS_STRINGS;
sz = *(imgp->proc->p_sysent->sv_szsigcode);
destp = (caddr_t)arginfo - szsigcode - SPARE_USRSPACE -
roundup((ARG_MAX - imgp->stringspace), sizeof(char *));
destp -= imgp->stringspace;
destp -= strlen(args->executable)+2;
copyout(args->executable, destp, strlen(args->executable)+1);
AUXARGS_ENTRY(pos, OSF1_EXEC_NAME, (long)destp);
if (args->loader) {
/* the loader seems to want the name here, then it overwrites it with
the FD of the executable. I have NFC what's going on here.. */
AUXARGS_ENTRY(pos, OSF1_EXEC_NAME, (long)destp);
destp-= (strlen("/sbin/loader")+1);
copyout("/sbin/loader", destp, strlen("/sbin/loader")+1);
AUXARGS_ENTRY(pos, OSF1_LOADER_NAME, (long)destp);
AUXARGS_ENTRY(pos, OSF1_LOADER_FLAGS, 0);
}
free(imgp->auxargs, M_TEMP);
imgp->auxargs = NULL;
(*stack_base)--;
**stack_base = (long)imgp->argc;
return 0;
}
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