1 /* $NetBSD: compat_13_machdep.c,v 1.6 2018/12/29 11:30:12 maxv Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Changed for the VAX port (and for readability) /IC 8 * 9 * This code is derived from software contributed to Berkeley by the Systems 10 * Programming Group of the University of Utah Computer Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah Hdr: machdep.c 1.63 91/04/24 37 * 38 * @(#)machdep.c 7.16 (Berkeley) 6/3/91 39 */ 40 41 /* 42 * Copyright (c) 2002, Hugh Graham. 43 * Copyright (c) 1994, 1998 Ludd, University of Lule}, Sweden. 44 * Copyright (c) 1993 Adam Glass 45 * Copyright (c) 1988 University of Utah. 46 * 47 * Changed for the VAX port (and for readability) /IC 48 * 49 * This code is derived from software contributed to Berkeley by the Systems 50 * Programming Group of the University of Utah Computer Science Department. 51 * 52 * Redistribution and use in source and binary forms, with or without 53 * modification, are permitted provided that the following conditions 54 * are met: 55 * 1. Redistributions of source code must retain the above copyright 56 * notice, this list of conditions and the following disclaimer. 57 * 2. Redistributions in binary form must reproduce the above copyright 58 * notice, this list of conditions and the following disclaimer in the 59 * documentation and/or other materials provided with the distribution. 60 * 3. All advertising materials mentioning features or use of this software 61 * must display the following acknowledgement: 62 * This product includes software developed by the University of 63 * California, Berkeley and its contributors. 64 * 4. Neither the name of the University nor the names of its contributors 65 * may be used to endorse or promote products derived from this software 66 * without specific prior written permission. 67 * 68 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 69 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 70 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 71 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 72 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 73 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 74 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 75 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 76 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 77 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 78 * SUCH DAMAGE. 79 * 80 * from: Utah Hdr: machdep.c 1.63 91/04/24 81 * 82 * @(#)machdep.c 7.16 (Berkeley) 6/3/91 83 */ 84 85 #include <sys/cdefs.h> 86 __KERNEL_RCSID(0, "$NetBSD: compat_13_machdep.c,v 1.6 2018/12/29 11:30:12 maxv Exp $"); 87 88 #ifdef _KERNEL_OPT 89 #include "opt_compat_netbsd.h" 90 #include "opt_compat_ultrix.h" 91 #include "opt_multiprocessor.h" 92 #include "opt_lockdebug.h" 93 #endif 94 95 #include <sys/param.h> 96 #include <sys/systm.h> 97 #include <sys/cpu.h> 98 #include <sys/device.h> 99 #include <sys/extent.h> 100 #include <sys/proc.h> 101 #include <sys/signal.h> 102 #include <sys/syscallargs.h> 103 #include <sys/sysctl.h> 104 #include <sys/time.h> 105 106 #include <dev/cons.h> 107 108 #include <compat/sys/signal.h> 109 #include <compat/sys/signalvar.h> 110 111 #include <machine/macros.h> 112 #include <machine/reg.h> 113 #include <vax/vax/gencons.h> 114 115 /* 116 * This code was moved here from sys/arch/vax/vax/sig_machdep.c 117 */ 118 119 int 120 compat_13_sys_sigreturn(struct lwp *l, const struct compat_13_sys_sigreturn_args *uap, register_t *retval) 121 { 122 /* { 123 syscallarg(struct sigcontext13 *) sigcntxp; 124 } */ 125 struct proc * const p = l->l_proc; 126 struct trapframe * const tf = l->l_md.md_utf; 127 struct sigcontext13 *ucntx; 128 struct sigcontext13 ksc; 129 sigset_t mask; 130 131 ucntx = SCARG(uap, sigcntxp); 132 if (copyin((void *)ucntx, (void *)&ksc, sizeof(struct sigcontext))) 133 return EINVAL; 134 135 /* Compatibility mode? */ 136 if ((ksc.sc_ps & (PSL_IPL | PSL_IS)) || 137 ((ksc.sc_ps & (PSL_U | PSL_PREVU)) != (PSL_U | PSL_PREVU)) || 138 (ksc.sc_ps & PSL_CM)) { 139 return (EINVAL); 140 } 141 142 mutex_enter(p->p_lock); 143 if (ksc.sc_onstack & SS_ONSTACK) 144 l->l_sigstk.ss_flags |= SS_ONSTACK; 145 else 146 l->l_sigstk.ss_flags &= ~SS_ONSTACK; 147 148 native_sigset13_to_sigset(&ksc.sc_mask, &mask); 149 (void) sigprocmask1(l, SIG_SETMASK, &mask, 0); 150 mutex_exit(p->p_lock); 151 152 tf->tf_fp = ksc.sc_fp; 153 tf->tf_ap = ksc.sc_ap; 154 tf->tf_pc = ksc.sc_pc; 155 tf->tf_sp = ksc.sc_sp; 156 tf->tf_psl = ksc.sc_ps; 157 return (EJUSTRETURN); 158 } 159 160 vaddr_t 161 setupstack_oldsigcontext(const struct ksiginfo *ksi, const sigset_t *mask, 162 int vers, struct lwp *l, struct trapframe *tf, vaddr_t sp, int onstack, 163 vaddr_t handler) 164 { 165 struct sigcontext sigctx; 166 struct otrampframe tramp; 167 struct proc * const p = l->l_proc; 168 bool error; 169 170 sigctx.sc_pc = tf->tf_pc; 171 sigctx.sc_ps = tf->tf_psl; 172 sigctx.sc_ap = tf->tf_ap; 173 sigctx.sc_fp = tf->tf_fp; 174 sigctx.sc_sp = tf->tf_sp; 175 sigctx.sc_onstack = onstack ? SS_ONSTACK : 0; 176 sigctx.sc_mask = *mask; 177 sp -= sizeof(struct sigcontext); 178 179 native_sigset_to_sigset13(mask, &sigctx.__sc_mask13); 180 181 tramp.sig = ksi->ksi_signo; 182 tramp.code = (register_t)ksi->ksi_addr; 183 /* Set up positions for structs on stack */ 184 tramp.scp = sp; 185 /* r0..r5 are saved by the popr in the sigcode snippet but we need 186 to zero them anyway. */ 187 tramp.r0 = tramp.r1 = tramp.r2 = tramp.r3 = tramp.r4 = tramp.r5 = 0; 188 tramp.pc = (register_t)handler; 189 tramp.arg = sp; 190 sendsig_reset(l, ksi->ksi_signo); 191 mutex_exit(p->p_lock); 192 193 /* Point stack pointer at pc in trampoline. */ 194 sp =- 8; 195 196 error = copyout(&tramp, (char *)tramp.scp - sizeof(tramp), sizeof(tramp)) != 0 || 197 copyout(&sigctx, (void *)tramp.scp, sizeof(sigctx)) != 0; 198 199 mutex_enter(p->p_lock); 200 if (error) 201 return 0; 202 203 return sp; 204 } 205
Indexes created Sat Sep 20 22:09:52 GMT 2025