80ee637534
memory fault handler. IRIX uses irix_vm_fault, and all other emulation use NULL, which means to use uvm_fault. - While we are there, explicitely set to NULL the uninitialized fields in struct emul: e_fault and e_sysctl on most ports - e_fault is used by the trap handler, for now only on mips. In order to avoid intrusive modifications in UVM, the function pointed by e_fault does not has exactly the same protoype as uvm_fault: int uvm_fault __P((struct vm_map *, vaddr_t, vm_fault_t, vm_prot_t)); int e_fault __P((struct proc *, vaddr_t, vm_fault_t, vm_prot_t)); - In IRIX share groups, all the VM space is shared, except one page. This bounds us to have different VM spaces and synchronize modifications to the VM space accross share group members. We need an IRIX specific hook to the page fault handler in order to propagate VM space modifications caused by page faults.
89 lines
2.6 KiB
C
89 lines
2.6 KiB
C
/* $NetBSD: sunos_exec.c,v 1.38 2002/09/21 21:15:00 manu Exp $ */
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/*
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* Copyright (c) 1993 Theo de Raadt
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* All rights reserved.
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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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* 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 without 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: sunos_exec.c,v 1.38 2002/09/21 21:15:00 manu Exp $");
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#if defined(_KERNEL_OPT)
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#include "opt_syscall_debug.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/mount.h>
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#include <sys/signalvar.h>
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#include <sys/vnode.h>
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#include <sys/exec.h>
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#include <compat/sunos/sunos.h>
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#include <compat/sunos/sunos_syscall.h>
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extern int nsunos_sysent;
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extern struct sysent sunos_sysent[];
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#ifdef SYSCALL_DEBUG
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extern const char * const sunos_syscallnames[];
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#endif
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extern char sunos_sigcode[], sunos_esigcode[];
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#ifdef __HAVE_SYSCALL_INTERN
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void sunos_syscall_intern __P((struct proc *));
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#else
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void syscall __P((void));
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#endif
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struct emul emul_sunos = {
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"sunos",
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"/emul/sunos",
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0,
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NULL,
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SUNOS_SYS_syscall,
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SUNOS_SYS_MAXSYSCALL,
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sunos_sysent,
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#ifdef SYSCALL_DEBUG
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sunos_syscallnames,
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#else
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NULL,
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#endif
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sunos_sendsig,
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trapsignal,
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sunos_sigcode,
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sunos_esigcode,
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setregs,
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NULL,
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NULL,
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NULL,
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#ifdef __HAVE_SYSCALL_INTERN
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sunos_syscall_intern,
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#else
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syscall,
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#endif
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NULL,
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NULL,
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};
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