/* $NetBSD: irix_exec.c,v 1.19 2002/08/02 23:02:51 manu Exp $ */ /*- * Copyright (c) 2001-2002 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Emmanuel Dreyfus. * * 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 the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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 __KERNEL_RCSID(0, "$NetBSD: irix_exec.c,v 1.19 2002/08/02 23:02:51 manu Exp $"); #ifndef ELFSIZE #define ELFSIZE 32 /* XXX should die */ #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include extern const int native_to_svr4_signo[]; static void setregs_n32 __P((struct proc *, struct exec_package *, u_long)); static void irix_e_proc_exec __P((struct proc *, struct exec_package *)); static void irix_e_proc_fork __P((struct proc *, struct proc *)); static void irix_e_proc_exit __P((struct proc *)); static void irix_e_proc_init __P((struct proc *, struct vmspace *)); extern struct sysent irix_sysent[]; extern const char * const irix_syscallnames[]; #ifndef __HAVE_SYSCALL_INTERN void irix_syscall __P((void)); #else void irix_syscall_intern __P((struct proc *)); #endif const struct emul emul_irix_o32 = { "irix o32", "/emul/irix", #ifndef __HAVE_MINIMAL_EMUL 0, native_to_irix_errno, IRIX_SYS_syscall, IRIX_SYS_MAXSYSCALL, #endif irix_sysent, #ifdef SYSCALL_DEBUG irix_syscallnames, #else NULL, #endif irix_sendsig, trapsignal, NULL, NULL, setregs, irix_e_proc_exec, irix_e_proc_fork, irix_e_proc_exit, #ifdef __HAVE_SYSCALL_INTERN irix_syscall_intern, #else irix_syscall, #endif }; const struct emul emul_irix_n32 = { "irix n32", "/emul/irix", #ifndef __HAVE_MINIMAL_EMUL 0, native_to_irix_errno, IRIX_SYS_syscall, IRIX_SYS_MAXSYSCALL, #endif irix_sysent, #ifdef SYSCALL_DEBUG irix_syscallnames, #else NULL, #endif irix_sendsig, trapsignal, NULL, NULL, setregs_n32, irix_e_proc_exec, irix_e_proc_fork, irix_e_proc_exit, #ifdef __HAVE_SYSCALL_INTERN irix_syscall_intern, #else irix_syscall, #endif }; /* * IRIX o32 ABI probe function */ int ELFNAME2(irix,probe_o32)(p, epp, eh, itp, pos) struct proc *p; struct exec_package *epp; void *eh; char *itp; vaddr_t *pos; { const char *bp; int error; size_t len; #ifdef DEBUG_IRIX printf("irix_probe_o32()\n"); #endif if ((((Elf_Ehdr *)epp->ep_hdr)->e_flags & IRIX_EF_IRIX_ABI_MASK) != IRIX_EF_IRIX_ABIO32) return error; if (itp[0]) { /* o32 binaries use /lib/libc.so.1 */ if (strncmp(itp, "/lib/libc.so", 12) && strncmp(itp, "/usr/lib/libc.so", 16)) return ENOEXEC; if ((error = emul_find(p, NULL, epp->ep_esch->es_emul->e_path, itp, &bp, 0))) return error; if ((error = copystr(bp, itp, MAXPATHLEN, &len))) return error; free((void *)bp, M_TEMP); } *pos = ELF_NO_ADDR; #ifdef DEBUG_IRIX printf("irix_probe_o32: returning 0\n"); printf("epp->ep_vm_minaddr = 0x%lx\n", epp->ep_vm_minaddr); #endif epp->ep_vm_minaddr = epp->ep_vm_minaddr & ~0xfUL; return 0; } /* * IRIX n32 ABI probe function */ int ELFNAME2(irix,probe_n32)(p, epp, eh, itp, pos) struct proc *p; struct exec_package *epp; void *eh; char *itp; vaddr_t *pos; { const char *bp; int error; size_t len; #ifdef DEBUG_IRIX printf("irix_probe_n32()\n"); #endif if ((((Elf_Ehdr *)epp->ep_hdr)->e_flags & IRIX_EF_IRIX_ABI_MASK) != IRIX_EF_IRIX_ABIN32) return error; if (itp[0]) { /* n32 binaries use /lib32/libc.so.1 */ if (strncmp(itp, "/lib32/libc.so", 14) && strncmp(itp, "/usr/lib32/libc.so", 18)) return ENOEXEC; if ((error = emul_find(p, NULL, epp->ep_esch->es_emul->e_path, itp, &bp, 0))) return error; if ((error = copystr(bp, itp, MAXPATHLEN, &len))) return error; free((void *)bp, M_TEMP); } *pos = ELF_NO_ADDR; #ifdef DEBUG_IRIX printf("irix_probe_n32: returning 0\n"); printf("epp->ep_vm_minaddr = 0x%lx\n", epp->ep_vm_minaddr); #endif epp->ep_vm_minaddr = epp->ep_vm_minaddr & ~0xfUL; return 0; } /* * set registers on exec for N32 applications */ void setregs_n32(p, pack, stack) struct proc *p; struct exec_package *pack; u_long stack; { struct frame *f = (struct frame *)p->p_md.md_regs; /* Use regular setregs */ setregs(p, pack, stack); /* Enable 64 bit instructions (eg: sd) */ f->f_regs[SR] |= MIPS3_SR_UX; return; } /* * per-process emuldata allocation */ static void irix_e_proc_init(p, vmspace) struct proc *p; struct vmspace *vmspace; { struct irix_emuldata *ied; if (!p->p_emuldata) p->p_emuldata = malloc(sizeof(struct irix_emuldata), M_EMULDATA, M_WAITOK | M_ZERO); ied = p->p_emuldata; ied->ied_p = p; } /* * exec() hook used to allocate per process structures */ static void irix_e_proc_exec(p, epp) struct proc *p; struct exec_package *epp; { int error; irix_e_proc_init(p, p->p_vmspace); /* Initialize the process private area (PRDA) */ error = irix_prda_init(p); #ifdef DEBUG_IRIX if (error != 0) printf("irix_e_proc_exec(): PRDA map failed "); #endif } /* * exit() hook used to free per process data structures */ static void irix_e_proc_exit(p) struct proc *p; { struct proc *pp; struct irix_emuldata *ied; struct irix_share_group *isg; /* * Send SIGHUP to child process as requested using prctl(2) */ proclist_lock_read(); LIST_FOREACH(pp, &allproc, p_list) { /* Select IRIX processes */ if (irix_check_exec(pp) == 0) continue; ied = (struct irix_emuldata *)(pp->p_emuldata); if (ied->ied_termchild && pp->p_pptr == p) psignal(pp, native_to_svr4_signo[SIGHUP]); } proclist_unlock_read(); /* * Remove the process from share group processes list, if revelant. */ ied = (struct irix_emuldata *)(p->p_emuldata); if ((isg = ied->ied_share_group) != NULL) { lockmgr(&isg->isg_lock, LK_EXCLUSIVE, NULL); LIST_REMOVE(ied, ied_sglist); isg->isg_refcount--; /* * If the list is now empty, free the share group structure * We don't need to release the lock: there is nobody left * in the share group. */ if (isg->isg_refcount == 0) { free(isg, M_EMULDATA); ied->ied_share_group = NULL; } else { lockmgr(&isg->isg_lock, LK_RELEASE, NULL); } } free(p->p_emuldata, M_EMULDATA); p->p_emuldata = NULL; } /* * fork() hook used to allocate per process structures */ static void irix_e_proc_fork(p, parent) struct proc *p, *parent; { struct irix_emuldata *ied1; struct irix_emuldata *ied2; p->p_emuldata = NULL; /* Use parent's vmspace because our vmspace may not be setup yet */ irix_e_proc_init(p, parent->p_vmspace); ied1 = p->p_emuldata; ied2 = parent->p_emuldata; (void) memcpy(ied1, ied2, (unsigned) ((caddr_t)&ied1->ied_endcopy - (caddr_t)&ied1->ied_startcopy)); } /* * Return true if the given process is an IRIX process */ int irix_check_exec(p) struct proc *p; { if (p->p_emul == &emul_irix_n32 || p->p_emul == &emul_irix_o32) return 1; return 0; }