376 lines
8.8 KiB
C
376 lines
8.8 KiB
C
/* $NetBSD: irix_exec.c,v 1.19 2002/08/02 23:02:51 manu Exp $ */
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/*-
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* Copyright (c) 2001-2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Emmanuel Dreyfus.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: irix_exec.c,v 1.19 2002/08/02 23:02:51 manu Exp $");
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#ifndef ELFSIZE
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#define ELFSIZE 32 /* XXX should die */
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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/lock.h>
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#include <sys/exec.h>
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#include <sys/exec_elf.h>
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#include <sys/malloc.h>
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#include <uvm/uvm_extern.h>
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#include <machine/regnum.h>
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#include <compat/common/compat_util.h>
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#include <compat/irix/irix_syscall.h>
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#include <compat/irix/irix_types.h>
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#include <compat/irix/irix_exec.h>
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#include <compat/irix/irix_prctl.h>
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#include <compat/irix/irix_signal.h>
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#include <compat/irix/irix_errno.h>
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extern const int native_to_svr4_signo[];
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static void setregs_n32 __P((struct proc *, struct exec_package *, u_long));
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static void irix_e_proc_exec __P((struct proc *, struct exec_package *));
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static void irix_e_proc_fork __P((struct proc *, struct proc *));
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static void irix_e_proc_exit __P((struct proc *));
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static void irix_e_proc_init __P((struct proc *, struct vmspace *));
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extern struct sysent irix_sysent[];
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extern const char * const irix_syscallnames[];
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#ifndef __HAVE_SYSCALL_INTERN
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void irix_syscall __P((void));
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#else
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void irix_syscall_intern __P((struct proc *));
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#endif
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const struct emul emul_irix_o32 = {
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"irix o32",
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"/emul/irix",
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#ifndef __HAVE_MINIMAL_EMUL
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0,
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native_to_irix_errno,
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IRIX_SYS_syscall,
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IRIX_SYS_MAXSYSCALL,
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#endif
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irix_sysent,
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#ifdef SYSCALL_DEBUG
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irix_syscallnames,
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#else
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NULL,
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#endif
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irix_sendsig,
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trapsignal,
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NULL,
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NULL,
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setregs,
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irix_e_proc_exec,
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irix_e_proc_fork,
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irix_e_proc_exit,
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#ifdef __HAVE_SYSCALL_INTERN
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irix_syscall_intern,
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#else
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irix_syscall,
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#endif
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};
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const struct emul emul_irix_n32 = {
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"irix n32",
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"/emul/irix",
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#ifndef __HAVE_MINIMAL_EMUL
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0,
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native_to_irix_errno,
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IRIX_SYS_syscall,
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IRIX_SYS_MAXSYSCALL,
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#endif
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irix_sysent,
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#ifdef SYSCALL_DEBUG
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irix_syscallnames,
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#else
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NULL,
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#endif
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irix_sendsig,
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trapsignal,
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NULL,
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NULL,
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setregs_n32,
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irix_e_proc_exec,
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irix_e_proc_fork,
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irix_e_proc_exit,
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#ifdef __HAVE_SYSCALL_INTERN
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irix_syscall_intern,
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#else
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irix_syscall,
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#endif
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};
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/*
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* IRIX o32 ABI probe function
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*/
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int
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ELFNAME2(irix,probe_o32)(p, epp, eh, itp, pos)
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struct proc *p;
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struct exec_package *epp;
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void *eh;
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char *itp;
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vaddr_t *pos;
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{
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const char *bp;
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int error;
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size_t len;
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#ifdef DEBUG_IRIX
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printf("irix_probe_o32()\n");
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#endif
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if ((((Elf_Ehdr *)epp->ep_hdr)->e_flags & IRIX_EF_IRIX_ABI_MASK) !=
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IRIX_EF_IRIX_ABIO32)
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return error;
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if (itp[0]) {
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/* o32 binaries use /lib/libc.so.1 */
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if (strncmp(itp, "/lib/libc.so", 12) &&
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strncmp(itp, "/usr/lib/libc.so", 16))
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return ENOEXEC;
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if ((error = emul_find(p, NULL, epp->ep_esch->es_emul->e_path,
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itp, &bp, 0)))
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return error;
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if ((error = copystr(bp, itp, MAXPATHLEN, &len)))
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return error;
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free((void *)bp, M_TEMP);
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}
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*pos = ELF_NO_ADDR;
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#ifdef DEBUG_IRIX
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printf("irix_probe_o32: returning 0\n");
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printf("epp->ep_vm_minaddr = 0x%lx\n", epp->ep_vm_minaddr);
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#endif
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epp->ep_vm_minaddr = epp->ep_vm_minaddr & ~0xfUL;
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return 0;
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}
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/*
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* IRIX n32 ABI probe function
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*/
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int
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ELFNAME2(irix,probe_n32)(p, epp, eh, itp, pos)
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struct proc *p;
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struct exec_package *epp;
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void *eh;
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char *itp;
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vaddr_t *pos;
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{
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const char *bp;
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int error;
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size_t len;
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#ifdef DEBUG_IRIX
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printf("irix_probe_n32()\n");
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#endif
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if ((((Elf_Ehdr *)epp->ep_hdr)->e_flags & IRIX_EF_IRIX_ABI_MASK) !=
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IRIX_EF_IRIX_ABIN32)
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return error;
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if (itp[0]) {
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/* n32 binaries use /lib32/libc.so.1 */
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if (strncmp(itp, "/lib32/libc.so", 14) &&
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strncmp(itp, "/usr/lib32/libc.so", 18))
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return ENOEXEC;
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if ((error = emul_find(p, NULL, epp->ep_esch->es_emul->e_path,
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itp, &bp, 0)))
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return error;
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if ((error = copystr(bp, itp, MAXPATHLEN, &len)))
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return error;
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free((void *)bp, M_TEMP);
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}
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*pos = ELF_NO_ADDR;
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#ifdef DEBUG_IRIX
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printf("irix_probe_n32: returning 0\n");
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printf("epp->ep_vm_minaddr = 0x%lx\n", epp->ep_vm_minaddr);
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#endif
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epp->ep_vm_minaddr = epp->ep_vm_minaddr & ~0xfUL;
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return 0;
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}
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/*
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* set registers on exec for N32 applications
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*/
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void
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setregs_n32(p, pack, stack)
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struct proc *p;
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struct exec_package *pack;
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u_long stack;
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{
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struct frame *f = (struct frame *)p->p_md.md_regs;
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/* Use regular setregs */
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setregs(p, pack, stack);
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/* Enable 64 bit instructions (eg: sd) */
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f->f_regs[SR] |= MIPS3_SR_UX;
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return;
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}
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/*
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* per-process emuldata allocation
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*/
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static void
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irix_e_proc_init(p, vmspace)
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struct proc *p;
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struct vmspace *vmspace;
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{
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struct irix_emuldata *ied;
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if (!p->p_emuldata)
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p->p_emuldata = malloc(sizeof(struct irix_emuldata),
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M_EMULDATA, M_WAITOK | M_ZERO);
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ied = p->p_emuldata;
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ied->ied_p = p;
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}
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/*
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* exec() hook used to allocate per process structures
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*/
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static void
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irix_e_proc_exec(p, epp)
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struct proc *p;
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struct exec_package *epp;
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{
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int error;
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irix_e_proc_init(p, p->p_vmspace);
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/* Initialize the process private area (PRDA) */
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error = irix_prda_init(p);
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#ifdef DEBUG_IRIX
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if (error != 0)
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printf("irix_e_proc_exec(): PRDA map failed ");
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#endif
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}
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/*
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* exit() hook used to free per process data structures
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*/
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static void
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irix_e_proc_exit(p)
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struct proc *p;
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{
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struct proc *pp;
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struct irix_emuldata *ied;
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struct irix_share_group *isg;
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/*
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* Send SIGHUP to child process as requested using prctl(2)
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*/
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proclist_lock_read();
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LIST_FOREACH(pp, &allproc, p_list) {
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/* Select IRIX processes */
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if (irix_check_exec(pp) == 0)
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continue;
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ied = (struct irix_emuldata *)(pp->p_emuldata);
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if (ied->ied_termchild && pp->p_pptr == p)
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psignal(pp, native_to_svr4_signo[SIGHUP]);
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}
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proclist_unlock_read();
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/*
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* Remove the process from share group processes list, if revelant.
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*/
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ied = (struct irix_emuldata *)(p->p_emuldata);
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if ((isg = ied->ied_share_group) != NULL) {
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lockmgr(&isg->isg_lock, LK_EXCLUSIVE, NULL);
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LIST_REMOVE(ied, ied_sglist);
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isg->isg_refcount--;
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/*
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* If the list is now empty, free the share group structure
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* We don't need to release the lock: there is nobody left
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* in the share group.
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*/
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if (isg->isg_refcount == 0) {
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free(isg, M_EMULDATA);
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ied->ied_share_group = NULL;
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} else {
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lockmgr(&isg->isg_lock, LK_RELEASE, NULL);
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}
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}
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free(p->p_emuldata, M_EMULDATA);
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p->p_emuldata = NULL;
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}
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/*
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* fork() hook used to allocate per process structures
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*/
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static void
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irix_e_proc_fork(p, parent)
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struct proc *p, *parent;
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{
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struct irix_emuldata *ied1;
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struct irix_emuldata *ied2;
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p->p_emuldata = NULL;
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/* Use parent's vmspace because our vmspace may not be setup yet */
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irix_e_proc_init(p, parent->p_vmspace);
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ied1 = p->p_emuldata;
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ied2 = parent->p_emuldata;
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(void) memcpy(ied1, ied2, (unsigned)
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((caddr_t)&ied1->ied_endcopy - (caddr_t)&ied1->ied_startcopy));
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}
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/*
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* Return true if the given process is an IRIX process
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*/
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int
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irix_check_exec(p)
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struct proc *p;
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{
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if (p->p_emul == &emul_irix_n32 ||
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p->p_emul == &emul_irix_o32)
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return 1;
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return 0;
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}
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