139 lines
4.6 KiB
C
139 lines
4.6 KiB
C
/*-
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* Copyright (c) 1998-1999 Andrew Gallatin
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* All rights reserved.
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*
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* Based heavily on linux_sysvec.c
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* Which is Copyright (c) 1994-1996 Søren Schmidt
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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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* in this position and unchanged.
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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. The name of the author may not be used to endorse or promote products
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* derived from this software withough 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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* $FreeBSD$
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*/
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/* XXX we use functions that might not exist. */
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#include "opt_compat.h"
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#ifndef COMPAT_43
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#error "Unable to compile Osf1-emulator due to missing COMPAT_43 option!"
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#endif
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/sysent.h>
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#include <sys/imgact.h>
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#include <sys/imgact_aout.h>
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#include <sys/imgact_elf.h>
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#include <sys/malloc.h>
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#include <alpha/osf1/exec_ecoff.h>
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#include <alpha/osf1/osf1_signal.h>
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#include <alpha/osf1/osf1_syscall.h>
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#include <alpha/osf1/osf1_util.h>
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#include <alpha/osf1/osf1.h>
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MODULE_VERSION(osf1, 1);
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MODULE_DEPEND(osf1, sysvmsg, 1, 1, 1);
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MODULE_DEPEND(osf1, sysvsem, 1, 1, 1);
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MODULE_DEPEND(osf1, sysvshm, 1, 1, 1);
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int osf1_szsigcode;
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extern char sigcode[];
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static int osf1_freebsd_fixup(long **stack_base, struct image_params *imgp);
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struct sysentvec osf1_sysvec = {
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OSF1_SYS_MAXSYSCALL,
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osf1_sysent,
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0x0,
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0,
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0,
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0,
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0,
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0, /* trap-to-signal translation function */
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osf1_freebsd_fixup, /* fixup */
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osf1_sendsig,
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sigcode, /* use generic trampoline */
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&osf1_szsigcode, /* use generic trampoline size */
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0, /* prepsyscall */
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"OSF/1 ECOFF",
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NULL, /* we don't have an ECOFF coredump function */
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NULL,
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OSF1_MINSIGSTKSZ
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};
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/*
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* Do some magic to setup the stack properly for the osf1 dynamic loader
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* OSF/1 binaries need an auxargs vector describing the name of the
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* executable (must be a full path).
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*
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* If we're executing a dynamic binary, the loader will expect its
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* name, /sbin/loader, to be in the auxargs vectore as well.
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* Bear in mind that when we execute a dynamic binary, we begin by
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* executing the loader. The loader then takes care of mapping
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* executable (which is why it needs the full path)
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* and its requisite shared libs, then it transfers control
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* to the executable after calling set_program_attributes().
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*/
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#define AUXARGS_ENTRY(pos, id, val) {suword(pos++, id); suword(pos++, val);}
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static int
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osf1_freebsd_fixup(long **stack_base, struct image_params *imgp)
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{
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char *destp;
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int sz;
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long *pos;
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struct ps_strings *arginfo;
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Osf_Auxargs *args;
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args = (Osf_Auxargs *)imgp->auxargs;
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pos = *stack_base + (imgp->argc + imgp->envc + 2);
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arginfo = (struct ps_strings *)PS_STRINGS;
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sz = *(imgp->proc->p_sysent->sv_szsigcode);
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destp = (caddr_t)arginfo - szsigcode - SPARE_USRSPACE -
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roundup((ARG_MAX - imgp->stringspace), sizeof(char *));
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destp -= imgp->stringspace;
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destp -= strlen(args->executable)+2;
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copyout(args->executable, destp, strlen(args->executable)+1);
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AUXARGS_ENTRY(pos, OSF1_EXEC_NAME, (long)destp);
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if (args->loader) {
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/* the loader seems to want the name here, then it overwrites it with
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the FD of the executable. I have NFC what's going on here.. */
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AUXARGS_ENTRY(pos, OSF1_EXEC_NAME, (long)destp);
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destp-= (strlen("/sbin/loader")+1);
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copyout("/sbin/loader", destp, strlen("/sbin/loader")+1);
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AUXARGS_ENTRY(pos, OSF1_LOADER_NAME, (long)destp);
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AUXARGS_ENTRY(pos, OSF1_LOADER_FLAGS, 0);
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}
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free(imgp->auxargs, M_TEMP);
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imgp->auxargs = NULL;
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(*stack_base)--;
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**stack_base = (long)imgp->argc;
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return 0;
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}
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