sig_machdep.c revision 1.2.2.2
1 1.2.2.2 gehenna /* $NetBSD: sig_machdep.c,v 1.2.2.2 2002/07/14 17:47:13 gehenna Exp $ */ 2 1.2.2.2 gehenna 3 1.2.2.2 gehenna /*- 4 1.2.2.2 gehenna * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 1.2.2.2 gehenna * All rights reserved. 6 1.2.2.2 gehenna * 7 1.2.2.2 gehenna * This code is derived from software contributed to The NetBSD Foundation 8 1.2.2.2 gehenna * by Matthew Fredette. 9 1.2.2.2 gehenna * 10 1.2.2.2 gehenna * Redistribution and use in source and binary forms, with or without 11 1.2.2.2 gehenna * modification, are permitted provided that the following conditions 12 1.2.2.2 gehenna * are met: 13 1.2.2.2 gehenna * 1. Redistributions of source code must retain the above copyright 14 1.2.2.2 gehenna * notice, this list of conditions and the following disclaimer. 15 1.2.2.2 gehenna * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.2.2 gehenna * notice, this list of conditions and the following disclaimer in the 17 1.2.2.2 gehenna * documentation and/or other materials provided with the distribution. 18 1.2.2.2 gehenna * 3. All advertising materials mentioning features or use of this software 19 1.2.2.2 gehenna * must display the following acknowledgement: 20 1.2.2.2 gehenna * This product includes software developed by the NetBSD 21 1.2.2.2 gehenna * Foundation, Inc. and its contributors. 22 1.2.2.2 gehenna * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.2.2.2 gehenna * contributors may be used to endorse or promote products derived 24 1.2.2.2 gehenna * from this software without specific prior written permission. 25 1.2.2.2 gehenna * 26 1.2.2.2 gehenna * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.2.2.2 gehenna * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.2.2.2 gehenna * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.2.2.2 gehenna * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.2.2.2 gehenna * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.2.2.2 gehenna * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.2.2.2 gehenna * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.2.2.2 gehenna * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.2.2.2 gehenna * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.2.2.2 gehenna * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.2.2.2 gehenna * POSSIBILITY OF SUCH DAMAGE. 37 1.2.2.2 gehenna */ 38 1.2.2.2 gehenna 39 1.2.2.2 gehenna /* 40 1.2.2.2 gehenna * Copyright (c) 1988 University of Utah. 41 1.2.2.2 gehenna * Copyright (c) 1982, 1986, 1990, 1993 42 1.2.2.2 gehenna * The Regents of the University of California. All rights reserved. 43 1.2.2.2 gehenna * 44 1.2.2.2 gehenna * This code is derived from software contributed to Berkeley by 45 1.2.2.2 gehenna * the Systems Programming Group of the University of Utah Computer 46 1.2.2.2 gehenna * Science Department. 47 1.2.2.2 gehenna * 48 1.2.2.2 gehenna * Redistribution and use in source and binary forms, with or without 49 1.2.2.2 gehenna * modification, are permitted provided that the following conditions 50 1.2.2.2 gehenna * are met: 51 1.2.2.2 gehenna * 1. Redistributions of source code must retain the above copyright 52 1.2.2.2 gehenna * notice, this list of conditions and the following disclaimer. 53 1.2.2.2 gehenna * 2. Redistributions in binary form must reproduce the above copyright 54 1.2.2.2 gehenna * notice, this list of conditions and the following disclaimer in the 55 1.2.2.2 gehenna * documentation and/or other materials provided with the distribution. 56 1.2.2.2 gehenna * 3. All advertising materials mentioning features or use of this software 57 1.2.2.2 gehenna * must display the following acknowledgement: 58 1.2.2.2 gehenna * This product includes software developed by the University of 59 1.2.2.2 gehenna * California, Berkeley and its contributors. 60 1.2.2.2 gehenna * 4. Neither the name of the University nor the names of its contributors 61 1.2.2.2 gehenna * may be used to endorse or promote products derived from this software 62 1.2.2.2 gehenna * without specific prior written permission. 63 1.2.2.2 gehenna * 64 1.2.2.2 gehenna * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 1.2.2.2 gehenna * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 1.2.2.2 gehenna * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 1.2.2.2 gehenna * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 1.2.2.2 gehenna * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 1.2.2.2 gehenna * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 1.2.2.2 gehenna * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 1.2.2.2 gehenna * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 1.2.2.2 gehenna * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 1.2.2.2 gehenna * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 1.2.2.2 gehenna * SUCH DAMAGE. 75 1.2.2.2 gehenna * 76 1.2.2.2 gehenna * from: Utah Hdr: machdep.c 1.74 92/12/20 77 1.2.2.2 gehenna * from: @(#)machdep.c 8.10 (Berkeley) 4/20/94 78 1.2.2.2 gehenna */ 79 1.2.2.2 gehenna 80 1.2.2.2 gehenna #include "opt_compat_netbsd.h" 81 1.2.2.2 gehenna 82 1.2.2.2 gehenna #define __HPPA_SIGNAL_PRIVATE 83 1.2.2.2 gehenna 84 1.2.2.2 gehenna #include <sys/param.h> 85 1.2.2.2 gehenna #include <sys/systm.h> 86 1.2.2.2 gehenna #include <sys/kernel.h> 87 1.2.2.2 gehenna #include <sys/proc.h> 88 1.2.2.2 gehenna #include <sys/user.h> 89 1.2.2.2 gehenna #include <sys/signal.h> 90 1.2.2.2 gehenna #include <sys/signalvar.h> 91 1.2.2.2 gehenna 92 1.2.2.2 gehenna #include <sys/mount.h> 93 1.2.2.2 gehenna #include <sys/syscallargs.h> 94 1.2.2.2 gehenna 95 1.2.2.2 gehenna #include <machine/cpu.h> 96 1.2.2.2 gehenna #include <machine/reg.h> 97 1.2.2.2 gehenna 98 1.2.2.2 gehenna #ifdef DEBUG 99 1.2.2.2 gehenna int sigdebug = 0xff; 100 1.2.2.2 gehenna int sigpid = 0; 101 1.2.2.2 gehenna #define SDB_FOLLOW 0x01 102 1.2.2.2 gehenna #define SDB_KSTACK 0x02 103 1.2.2.2 gehenna #define SDB_FPSTATE 0x04 104 1.2.2.2 gehenna #endif 105 1.2.2.2 gehenna 106 1.2.2.2 gehenna /* 107 1.2.2.2 gehenna * Send an interrupt to process. 108 1.2.2.2 gehenna */ 109 1.2.2.2 gehenna void 110 1.2.2.2 gehenna sendsig(catcher, sig, mask, code) 111 1.2.2.2 gehenna sig_t catcher; 112 1.2.2.2 gehenna int sig; 113 1.2.2.2 gehenna sigset_t *mask; 114 1.2.2.2 gehenna u_long code; 115 1.2.2.2 gehenna { 116 1.2.2.2 gehenna struct proc *p = curproc; 117 1.2.2.2 gehenna struct sigframe *fp, kf; 118 1.2.2.2 gehenna caddr_t sp; 119 1.2.2.2 gehenna struct trapframe *tf; 120 1.2.2.2 gehenna int onstack, fsize; 121 1.2.2.2 gehenna 122 1.2.2.2 gehenna tf = (struct trapframe *)p->p_md.md_regs; 123 1.2.2.2 gehenna 124 1.2.2.2 gehenna /* Do we need to jump onto the signal stack? */ 125 1.2.2.2 gehenna onstack = 126 1.2.2.2 gehenna (p->p_sigctx.ps_sigstk.ss_flags & (SS_DISABLE | SS_ONSTACK)) == 0 && 127 1.2.2.2 gehenna (SIGACTION(p, sig).sa_flags & SA_ONSTACK) != 0; 128 1.2.2.2 gehenna 129 1.2.2.2 gehenna /* 130 1.2.2.2 gehenna * Allocate space for the signal handler context. 131 1.2.2.2 gehenna * The PA-RISC calling convention mandates that 132 1.2.2.2 gehenna * the stack pointer must always be 64-byte aligned, 133 1.2.2.2 gehenna * and points to the first *unused* byte. 134 1.2.2.2 gehenna */ 135 1.2.2.2 gehenna fsize = sizeof(struct sigframe); 136 1.2.2.2 gehenna sp = (onstack ? 137 1.2.2.2 gehenna (caddr_t)p->p_sigctx.ps_sigstk.ss_sp : 138 1.2.2.2 gehenna (caddr_t)tf->tf_sp); 139 1.2.2.2 gehenna sp = (caddr_t)(((u_int)(sp + fsize + 63)) & ~63); 140 1.2.2.2 gehenna fp = (struct sigframe *) (sp - fsize); 141 1.2.2.2 gehenna 142 1.2.2.2 gehenna #ifdef DEBUG 143 1.2.2.2 gehenna if ((sigdebug & SDB_FOLLOW) && (!sigpid || p->p_pid == sigpid)) 144 1.2.2.2 gehenna printf("sendsig: %s[%d] sig %d catcher %p\n", 145 1.2.2.2 gehenna p->p_comm, p->p_pid, sig, catcher); 146 1.2.2.2 gehenna #endif 147 1.2.2.2 gehenna 148 1.2.2.2 gehenna /* 149 1.2.2.2 gehenna * Save necessary hardware state. Currently this includes: 150 1.2.2.2 gehenna * - original exception frame 151 1.2.2.2 gehenna * - FP coprocessor state 152 1.2.2.2 gehenna */ 153 1.2.2.2 gehenna kf.sf_state.ss_flags = SS_USERREGS; 154 1.2.2.2 gehenna memcpy(&kf.sf_state.ss_frame, tf, sizeof(*tf)); 155 1.2.2.2 gehenna /* XXX FP state */ 156 1.2.2.2 gehenna 157 1.2.2.2 gehenna /* Build the signal context to be used by sigreturn. */ 158 1.2.2.2 gehenna kf.sf_sc.sc_sp = tf->tf_sp; 159 1.2.2.2 gehenna kf.sf_sc.sc_fp = tf->tf_sp; /* XXX fredette - is this right? */ 160 1.2.2.2 gehenna kf.sf_sc.sc_ap = (int)&fp->sf_state; 161 1.2.2.2 gehenna kf.sf_sc.sc_pcsqh = tf->tf_iisq_head; 162 1.2.2.2 gehenna kf.sf_sc.sc_pcoqh = tf->tf_iioq_head; 163 1.2.2.2 gehenna kf.sf_sc.sc_pcsqt = tf->tf_iisq_tail; 164 1.2.2.2 gehenna kf.sf_sc.sc_pcoqt = tf->tf_iioq_tail; 165 1.2.2.2 gehenna kf.sf_sc.sc_ps = tf->tf_ipsw; 166 1.2.2.2 gehenna 167 1.2.2.2 gehenna /* Save signal stack. */ 168 1.2.2.2 gehenna kf.sf_sc.sc_onstack = p->p_sigctx.ps_sigstk.ss_flags & SS_ONSTACK; 169 1.2.2.2 gehenna 170 1.2.2.2 gehenna /* Save signal mask. */ 171 1.2.2.2 gehenna kf.sf_sc.sc_mask = *mask; 172 1.2.2.2 gehenna 173 1.2.2.2 gehenna /* Fill the calling convention part of the signal frame. */ 174 1.2.2.2 gehenna kf.sf_psp = 0; 175 1.2.2.2 gehenna kf.sf_clup = 0; /* XXX fredette - is this right? */ 176 1.2.2.2 gehenna kf.sf_sl = 0; /* XXX fredette - is this right? */ 177 1.2.2.2 gehenna kf.sf_edp = 0; /* XXX fredette - is this right? */ 178 1.2.2.2 gehenna 179 1.2.2.2 gehenna /* Copy out the signal frame. */ 180 1.2.2.2 gehenna if (copyout(&kf, fp, fsize)) { 181 1.2.2.2 gehenna #ifdef DEBUG 182 1.2.2.2 gehenna if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 183 1.2.2.2 gehenna printf("sendsig(%d): copyout failed on sig %d\n", 184 1.2.2.2 gehenna p->p_pid, sig); 185 1.2.2.2 gehenna #endif 186 1.2.2.2 gehenna /* 187 1.2.2.2 gehenna * Process has trashed its stack; give it an illegal 188 1.2.2.2 gehenna * instruction to halt it in its tracks. 189 1.2.2.2 gehenna */ 190 1.2.2.2 gehenna sigexit(p, SIGILL); 191 1.2.2.2 gehenna /* NOTREACHED */ 192 1.2.2.2 gehenna } 193 1.2.2.2 gehenna #ifdef DEBUG 194 1.2.2.2 gehenna if (sigdebug & SDB_FOLLOW) 195 1.2.2.2 gehenna printf("sendsig(%d): sig %d scp %p fp %p sc_sp %x sc_ap %x\n", 196 1.2.2.2 gehenna p->p_pid, sig, &fp->sf_sc, fp, 197 1.2.2.2 gehenna kf.sf_sc.sc_sp, kf.sf_sc.sc_ap); 198 1.2.2.2 gehenna #endif 199 1.2.2.2 gehenna 200 1.2.2.2 gehenna /* Set up the registers to return to sigcode. */ 201 1.2.2.2 gehenna tf->tf_sp = (int)sp; 202 1.2.2.2 gehenna tf->tf_r3 = (int)&fp->sf_sc; 203 1.2.2.2 gehenna tf->tf_iioq_head = (int)p->p_sigctx.ps_sigcode | HPPA_PC_PRIV_USER; 204 1.2.2.2 gehenna tf->tf_iioq_tail = tf->tf_iioq_head + 4; 205 1.2.2.2 gehenna tf->tf_arg0 = sig; 206 1.2.2.2 gehenna tf->tf_arg1 = code; 207 1.2.2.2 gehenna tf->tf_arg2 = (int)&fp->sf_sc; 208 1.2.2.2 gehenna tf->tf_arg3 = (int)catcher; 209 1.2.2.2 gehenna 210 1.2.2.2 gehenna /* Remember that we're now on the signal stack. */ 211 1.2.2.2 gehenna if (onstack) 212 1.2.2.2 gehenna p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 213 1.2.2.2 gehenna 214 1.2.2.2 gehenna #ifdef DEBUG 215 1.2.2.2 gehenna if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 216 1.2.2.2 gehenna printf("sendsig(%d): sig %d returns\n", 217 1.2.2.2 gehenna p->p_pid, sig); 218 1.2.2.2 gehenna #endif 219 1.2.2.2 gehenna } 220 1.2.2.2 gehenna 221 1.2.2.2 gehenna int 222 1.2.2.2 gehenna sys___sigreturn14(p, v, retval) 223 1.2.2.2 gehenna struct proc *p; 224 1.2.2.2 gehenna void *v; 225 1.2.2.2 gehenna register_t *retval; 226 1.2.2.2 gehenna { 227 1.2.2.2 gehenna struct sys___sigreturn14_args /* { 228 1.2.2.2 gehenna syscallarg(struct sigcontext *) sigcntxp; 229 1.2.2.2 gehenna } */ *uap = v; 230 1.2.2.2 gehenna struct sigcontext *scp; 231 1.2.2.2 gehenna struct trapframe *tf; 232 1.2.2.2 gehenna struct sigcontext tsigc; 233 1.2.2.2 gehenna struct sigstate tstate; 234 1.2.2.2 gehenna int rf, flags; 235 1.2.2.2 gehenna 236 1.2.2.2 gehenna /* 237 1.2.2.2 gehenna * The trampoline code hands us the context. 238 1.2.2.2 gehenna * It is unsafe to keep track of it ourselves, in the event that a 239 1.2.2.2 gehenna * program jumps out of a signal handler. 240 1.2.2.2 gehenna */ 241 1.2.2.2 gehenna scp = SCARG(uap, sigcntxp); 242 1.2.2.2 gehenna #ifdef DEBUG 243 1.2.2.2 gehenna if (sigdebug & SDB_FOLLOW) 244 1.2.2.2 gehenna printf("sigreturn: pid %d, scp %p\n", p->p_pid, scp); 245 1.2.2.2 gehenna #endif 246 1.2.2.2 gehenna if ((int)scp & 3) 247 1.2.2.2 gehenna return (EINVAL); 248 1.2.2.2 gehenna 249 1.2.2.2 gehenna if (copyin(scp, &tsigc, sizeof(tsigc)) != 0) 250 1.2.2.2 gehenna return (EFAULT); 251 1.2.2.2 gehenna scp = &tsigc; 252 1.2.2.2 gehenna 253 1.2.2.2 gehenna /* Make sure the user isn't pulling a fast one on us! */ 254 1.2.2.2 gehenna /* XXX fredette - until this is done, huge security hole here. */ 255 1.2.2.2 gehenna /* XXX fredette - requiring that PSL_R be zero will hurt debuggers. */ 256 1.2.2.2 gehenna #define PSW_MBS (PSW_C|PSW_Q|PSW_P|PSW_D|PSW_I) 257 1.2.2.2 gehenna #define PSW_MBZ (PSW_Y|PSW_Z|PSW_S|PSW_X|PSW_M|PSW_R) 258 1.2.2.2 gehenna if ((scp->sc_ps & (PSW_MBS|PSW_MBZ)) != PSW_MBS) 259 1.2.2.2 gehenna return (EINVAL); 260 1.2.2.2 gehenna 261 1.2.2.2 gehenna /* Restore register context. */ 262 1.2.2.2 gehenna tf = (struct trapframe *) p->p_md.md_regs; 263 1.2.2.2 gehenna 264 1.2.2.2 gehenna /* 265 1.2.2.2 gehenna * Grab pointer to hardware state information. 266 1.2.2.2 gehenna * If zero, the user is probably doing a longjmp. 267 1.2.2.2 gehenna */ 268 1.2.2.2 gehenna if ((rf = scp->sc_ap) == 0) 269 1.2.2.2 gehenna goto restore; 270 1.2.2.2 gehenna 271 1.2.2.2 gehenna /* 272 1.2.2.2 gehenna * See if there is anything to do before we go to the 273 1.2.2.2 gehenna * expense of copying in the trapframe 274 1.2.2.2 gehenna */ 275 1.2.2.2 gehenna flags = fuword((caddr_t)rf); 276 1.2.2.2 gehenna #ifdef DEBUG 277 1.2.2.2 gehenna if (sigdebug & SDB_FOLLOW) 278 1.2.2.2 gehenna printf("sigreturn(%d): sc_ap %x flags %x\n", 279 1.2.2.2 gehenna p->p_pid, rf, flags); 280 1.2.2.2 gehenna #endif 281 1.2.2.2 gehenna /* fuword failed (bogus sc_ap value). */ 282 1.2.2.2 gehenna if (flags == -1) 283 1.2.2.2 gehenna return (EINVAL); 284 1.2.2.2 gehenna 285 1.2.2.2 gehenna if (flags == 0 || copyin((caddr_t)rf, &tstate, sizeof(tstate)) != 0) 286 1.2.2.2 gehenna goto restore; 287 1.2.2.2 gehenna #ifdef DEBUG 288 1.2.2.2 gehenna if ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid) 289 1.2.2.2 gehenna printf("sigreturn(%d): ssp %p usp %x scp %p\n", 290 1.2.2.2 gehenna p->p_pid, &flags, scp->sc_sp, SCARG(uap, sigcntxp)); 291 1.2.2.2 gehenna #endif 292 1.2.2.2 gehenna 293 1.2.2.2 gehenna /* 294 1.2.2.2 gehenna * Restore most of the users registers except for those 295 1.2.2.2 gehenna * in the sigcontext; they will be handled below. 296 1.2.2.2 gehenna */ 297 1.2.2.2 gehenna if (flags & SS_USERREGS) { 298 1.2.2.2 gehenna 299 1.2.2.2 gehenna /* 300 1.2.2.2 gehenna * There are more registers that the user can tell 301 1.2.2.2 gehenna * us to bash than registers that, for security 302 1.2.2.2 gehenna * or other reasons, we must protect. So it's 303 1.2.2.2 gehenna * easier (but not faster), to copy these sensitive 304 1.2.2.2 gehenna * register values into the user-provided frame, 305 1.2.2.2 gehenna * then bulk-copy the user-provided frame into 306 1.2.2.2 gehenna * the process' frame. 307 1.2.2.2 gehenna */ 308 1.2.2.2 gehenna #define SIG_PROTECT(r) tstate.ss_frame.r = tf->r 309 1.2.2.2 gehenna /* SRs 5,6,7 must be protected. */ 310 1.2.2.2 gehenna SIG_PROTECT(tf_sr5); 311 1.2.2.2 gehenna SIG_PROTECT(tf_sr6); 312 1.2.2.2 gehenna SIG_PROTECT(tf_sr7); 313 1.2.2.2 gehenna 314 1.2.2.2 gehenna /* all CRs except CR11 must be protected. */ 315 1.2.2.2 gehenna SIG_PROTECT(tf_rctr); /* CR0 */ 316 1.2.2.2 gehenna /* CRs 1-8 are reserved */ 317 1.2.2.2 gehenna SIG_PROTECT(tf_pidr1); /* CR8 */ 318 1.2.2.2 gehenna SIG_PROTECT(tf_pidr2); /* CR9 */ 319 1.2.2.2 gehenna SIG_PROTECT(tf_ccr); /* CR10 */ 320 1.2.2.2 gehenna SIG_PROTECT(tf_pidr3); /* CR12 */ 321 1.2.2.2 gehenna SIG_PROTECT(tf_pidr4); /* CR14 */ 322 1.2.2.2 gehenna SIG_PROTECT(tf_eiem); /* CR15 */ 323 1.2.2.2 gehenna /* CR17 is the IISQ head */ 324 1.2.2.2 gehenna /* CR18 is the IIOQ head */ 325 1.2.2.2 gehenna SIG_PROTECT(tf_iir); /* CR19 */ 326 1.2.2.2 gehenna SIG_PROTECT(tf_isr); /* CR20 */ 327 1.2.2.2 gehenna SIG_PROTECT(tf_ior); /* CR21 */ 328 1.2.2.2 gehenna /* CR22 is the IPSW */ 329 1.2.2.2 gehenna SIG_PROTECT(tf_eirr); /* CR23 */ 330 1.2.2.2 gehenna SIG_PROTECT(tf_hptm); /* CR24 */ 331 1.2.2.2 gehenna SIG_PROTECT(tf_vtop); /* CR25 */ 332 1.2.2.2 gehenna /* XXX where are CR26, CR27, CR29, CR31? */ 333 1.2.2.2 gehenna SIG_PROTECT(tf_cr28); /* CR28 */ 334 1.2.2.2 gehenna SIG_PROTECT(tf_cr30); /* CR30 */ 335 1.2.2.2 gehenna #undef SIG_PROTECT 336 1.2.2.2 gehenna 337 1.2.2.2 gehenna /* The bulk copy. */ 338 1.2.2.2 gehenna *tf = tstate.ss_frame; 339 1.2.2.2 gehenna } 340 1.2.2.2 gehenna 341 1.2.2.2 gehenna /* 342 1.2.2.2 gehenna * Restore the original FP context 343 1.2.2.2 gehenna */ 344 1.2.2.2 gehenna /* XXX fredette */ 345 1.2.2.2 gehenna 346 1.2.2.2 gehenna restore: 347 1.2.2.2 gehenna /* 348 1.2.2.2 gehenna * Restore the user supplied information. 349 1.2.2.2 gehenna * This should be at the last so that the error (EINVAL) 350 1.2.2.2 gehenna * is reported to the sigreturn caller, not to the 351 1.2.2.2 gehenna * jump destination. 352 1.2.2.2 gehenna */ 353 1.2.2.2 gehenna 354 1.2.2.2 gehenna tf->tf_sp = scp->sc_sp; 355 1.2.2.2 gehenna /* XXX should we be doing the space registers? */ 356 1.2.2.2 gehenna tf->tf_iisq_head = scp->sc_pcsqh; 357 1.2.2.2 gehenna tf->tf_iioq_head = scp->sc_pcoqh | HPPA_PC_PRIV_USER; 358 1.2.2.2 gehenna tf->tf_iisq_tail = scp->sc_pcsqt; 359 1.2.2.2 gehenna tf->tf_iioq_tail = scp->sc_pcoqt | HPPA_PC_PRIV_USER; 360 1.2.2.2 gehenna tf->tf_ipsw = scp->sc_ps; 361 1.2.2.2 gehenna 362 1.2.2.2 gehenna /* Restore signal stack. */ 363 1.2.2.2 gehenna if (scp->sc_onstack & SS_ONSTACK) 364 1.2.2.2 gehenna p->p_sigctx.ps_sigstk.ss_flags |= SS_ONSTACK; 365 1.2.2.2 gehenna else 366 1.2.2.2 gehenna p->p_sigctx.ps_sigstk.ss_flags &= ~SS_ONSTACK; 367 1.2.2.2 gehenna 368 1.2.2.2 gehenna /* Restore signal mask. */ 369 1.2.2.2 gehenna (void) sigprocmask1(p, SIG_SETMASK, &scp->sc_mask, 0); 370 1.2.2.2 gehenna 371 1.2.2.2 gehenna #ifdef DEBUG 372 1.2.2.2 gehenna #if 0 /* XXX FP state */ 373 1.2.2.2 gehenna if ((sigdebug & SDB_FPSTATE) && *(char *)&tstate.ss_fpstate) 374 1.2.2.2 gehenna printf("sigreturn(%d): copied in FP state (%x) at %p\n", 375 1.2.2.2 gehenna p->p_pid, *(u_int *)&tstate.ss_fpstate, 376 1.2.2.2 gehenna &tstate.ss_fpstate); 377 1.2.2.2 gehenna #endif 378 1.2.2.2 gehenna if ((sigdebug & SDB_FOLLOW) || 379 1.2.2.2 gehenna ((sigdebug & SDB_KSTACK) && p->p_pid == sigpid)) 380 1.2.2.2 gehenna printf("sigreturn(%d): returns\n", p->p_pid); 381 1.2.2.2 gehenna #endif 382 1.2.2.2 gehenna return (EJUSTRETURN); 383 1.2.2.2 gehenna } 384 1.2.2.2 gehenna 385
Indexes created Sat Nov 01 21:09:44 GMT 2025