1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <sys/trap.h> 29 #include <sys/machtrap.h> 30 #include <sys/machsystm.h> 31 #include <sys/cpu_module.h> 32 #include <sys/panic.h> 33 #include <sys/uadmin.h> 34 #include <sys/kobj.h> 35 #include <sys/contract/process_impl.h> 36 #include <vm/hat_sfmmu.h> 37 #include <sys/reboot.h> 38 39 #ifdef TRAPTRACE 40 #include <sys/traptrace.h> 41 #endif 42 43 void showregs(unsigned, struct regs *, caddr_t, uint_t); 44 45 extern int tudebug; 46 47 void 48 mmu_print_sfsr(uint_t sfsr) 49 { 50 printf("MMU sfsr=%x:", sfsr); 51 switch (X_FAULT_TYPE(sfsr)) { 52 case FT_NONE: 53 printf(" No error"); 54 break; 55 case FT_PRIV: 56 printf(" Privilege violation"); 57 break; 58 case FT_SPEC_LD: 59 printf(" Speculative load on E-bit page"); 60 break; 61 case FT_ATOMIC_NC: 62 printf(" Atomic to uncacheable page"); 63 break; 64 case FT_ILL_ALT: 65 printf(" Illegal lda or sta"); 66 break; 67 case FT_NFO: 68 printf(" Normal access to NFO page"); 69 break; 70 case FT_RANGE: 71 printf(" Data or instruction address out of range"); 72 break; 73 case FT_RANGE_REG: 74 printf(" Jump to register out of range"); 75 break; 76 default: 77 printf(" Unknown error"); 78 break; 79 } 80 if (sfsr) { 81 printf(" on ASI 0x%x E %d CID %d PRIV %d W %d OW %d FV %d", 82 (sfsr & SFSR_ASI) >> SFSR_ASI_SHIFT, 83 (sfsr & SFSR_E) != 0, 84 (sfsr & SFSR_CTX) >> SFSR_CT_SHIFT, 85 (sfsr & SFSR_PR) != 0, 86 (sfsr & SFSR_W) != 0, 87 (sfsr & SFSR_OW) != 0, 88 (sfsr & SFSR_FV) != 0); 89 } 90 printf("\n"); 91 } 92 93 94 /* 95 * Handle an asynchronous hardware error, i.e. an E-$ parity error. 96 * The policy is currently to send a hardware error contract event to 97 * the process's process contract and to kill the process. Eventually 98 * we may want to instead send a special signal whose default 99 * disposition is to generate the contract event. 100 */ 101 void 102 trap_async_hwerr(void) 103 { 104 k_siginfo_t si; 105 proc_t *p = ttoproc(curthread); 106 107 errorq_drain(ue_queue); /* flush pending async error messages */ 108 109 contract_process_hwerr(p->p_ct_process, p); 110 111 bzero(&si, sizeof (k_siginfo_t)); 112 si.si_signo = SIGKILL; 113 si.si_code = SI_NOINFO; 114 trapsig(&si, 1); 115 } 116 117 /* 118 * Handle bus error and bus timeout for a user process by sending SIGBUS 119 * The type is either ASYNC_BERR or ASYNC_BTO. 120 */ 121 void 122 trap_async_berr_bto(int type, struct regs *rp) 123 { 124 k_siginfo_t si; 125 126 errorq_drain(ue_queue); /* flush pending async error messages */ 127 bzero(&si, sizeof (k_siginfo_t)); 128 129 si.si_signo = SIGBUS; 130 si.si_code = (type == ASYNC_BERR ? BUS_OBJERR : BUS_ADRERR); 131 si.si_addr = (caddr_t)rp->r_pc; /* AFAR unavailable - future RFE */ 132 si.si_errno = ENXIO; 133 134 trapsig(&si, 1); 135 } 136 137 #ifdef TRAPWINDOW 138 long trap_window[25]; 139 #endif /* TRAPWINDOW */ 140 141 /* 142 * Print out debugging info. 143 */ 144 /*ARGSUSED*/ 145 void 146 showregs(uint_t type, struct regs *rp, caddr_t addr, uint_t mmu_fsr) 147 { 148 int s; 149 150 s = spl7(); 151 type &= ~T_USER; 152 printf("%s: ", PTOU(curproc)->u_comm); 153 154 switch (type) { 155 case T_SYS_RTT_ALIGN: 156 case T_ALIGNMENT: 157 printf("alignment error:\n"); 158 break; 159 case T_INSTR_EXCEPTION: 160 printf("text access exception:\n"); 161 break; 162 case T_DATA_EXCEPTION: 163 printf("data access exception:\n"); 164 break; 165 case T_PRIV_INSTR: 166 printf("privileged instruction fault:\n"); 167 break; 168 case T_UNIMP_INSTR: 169 printf("illegal instruction fault:\n"); 170 break; 171 case T_IDIV0: 172 printf("integer divide zero trap:\n"); 173 break; 174 case T_DIV0: 175 printf("zero divide trap:\n"); 176 break; 177 case T_INT_OVERFLOW: 178 printf("integer overflow:\n"); 179 break; 180 case T_BREAKPOINT: 181 printf("breakpoint trap:\n"); 182 break; 183 case T_TAG_OVERFLOW: 184 printf("tag overflow:\n"); 185 break; 186 default: 187 if (type >= T_SOFTWARE_TRAP && type <= T_ESOFTWARE_TRAP) 188 printf("software trap 0x%x\n", type - T_SOFTWARE_TRAP); 189 else 190 printf("trap type = 0x%x\n", type); 191 break; 192 } 193 if (type == T_DATA_EXCEPTION || type == T_INSTR_EXCEPTION) { 194 mmu_print_sfsr(mmu_fsr); 195 } else if (addr) { 196 printf("addr=0x%p\n", (void *)addr); 197 } 198 199 printf("pid=%d, pc=0x%lx, sp=0x%llx, tstate=0x%llx, context=0x%x\n", 200 (ttoproc(curthread) && ttoproc(curthread)->p_pidp) ? 201 (ttoproc(curthread)->p_pid) : 0, rp->r_pc, rp->r_sp, 202 rp->r_tstate, sfmmu_getctx_sec()); 203 if (USERMODE(rp->r_tstate)) { 204 printf("o0-o7: %llx, %llx, %llx, %llx, %llx, %llx, " 205 "%llx, %llx\n", rp->r_o0, rp->r_o1, rp->r_o2, rp->r_o3, 206 rp->r_o4, rp->r_o5, rp->r_o6, rp->r_o7); 207 } 208 printf("g1-g7: %llx, %llx, %llx, %llx, %llx, %llx, %llx\n", 209 rp->r_g1, rp->r_g2, rp->r_g3, 210 rp->r_g4, rp->r_g5, rp->r_g6, rp->r_g7); 211 212 #ifdef TRAPWINDOW 213 printf("trap_window: wim=%x\n", trap_window[24]); 214 printf("o0-o7: %x, %x, %x, %x, %x, %x, %x, %x\n", 215 trap_window[0], trap_window[1], trap_window[2], trap_window[3], 216 trap_window[4], trap_window[5], trap_window[6], trap_window[7]); 217 printf("l0-l7: %x, %x, %x, %x, %x, %x, %x, %x\n", 218 trap_window[8], trap_window[9], trap_window[10], trap_window[11], 219 trap_window[12], trap_window[13], trap_window[14], trap_window[15]); 220 printf("i0-i7: %x, %x, %x, %x, %x, %x, %x, %x\n", 221 trap_window[16], trap_window[17], trap_window[18], trap_window[19], 222 trap_window[20], trap_window[21], trap_window[22], trap_window[23]); 223 #endif /* TRAPWINDOW */ 224 if (tudebug > 1 && (boothowto & RB_DEBUG)) { 225 debug_enter((char *)NULL); 226 } 227 splx(s); 228 } 229 230 static void 231 ptl1_showtrap(ptl1_state_t *pstate) 232 { 233 ptl1_regs_t *rp = &pstate->ptl1_regs; 234 short i, j, maxtl = rp->ptl1_trap_regs[0].ptl1_tl; 235 236 printf("%%tl %%tpc %%tnpc %%tstate" 237 " %%tt\n"); 238 239 for (i = maxtl - 1; i >= 0; i--) { 240 ptl1_trapregs_t *ptp = &rp->ptl1_trap_regs[i]; 241 uint64_t tstate = ptp->ptl1_tstate; 242 uint32_t ccr, asi, cwp, pstate; 243 244 cwp = (tstate >> TSTATE_CWP_SHIFT) & TSTATE_CWP_MASK; 245 pstate = (tstate >> TSTATE_PSTATE_SHIFT) & TSTATE_PSTATE_MASK; 246 asi = (tstate >> TSTATE_ASI_SHIFT) & TSTATE_ASI_MASK; 247 ccr = (tstate >> TSTATE_CCR_SHIFT) & TSTATE_CCR_MASK; 248 249 printf(" %d %016" PRIx64 " %016" PRIx64 " %010" PRIx64 250 " %03x\n", ptp->ptl1_tl, ptp->ptl1_tpc, 251 ptp->ptl1_tnpc, tstate, ptp->ptl1_tt); 252 printf(" %%ccr: %02x %%asi: %02x %%cwp: %x " 253 "%%pstate: %b\n", ccr, asi, cwp, pstate, PSTATE_BITS); 254 } 255 256 printf("%%g0-3: %016x %016" PRIx64 " %016" PRIx64 " %016" 257 PRIx64 "\n", 0, rp->ptl1_g1, rp->ptl1_g2, rp->ptl1_g3); 258 printf("%%g4-7: %016" PRIx64 " %016" PRIx64 " %016" PRIx64 " %016" 259 PRIx64 "\n", rp->ptl1_g4, rp->ptl1_g5, rp->ptl1_g6, rp->ptl1_g7); 260 261 i = rp->ptl1_cwp; 262 j = rp->ptl1_canrestore; 263 for (; j >= 0; i--, j--) { 264 struct rwindow *wp; 265 ulong_t off; 266 char *sym; 267 268 if (i < 0) 269 i += MAXWIN; 270 271 wp = &rp->ptl1_rwindow[i]; 272 273 if ((sym = kobj_getsymname(wp->rw_in[7], &off)) != NULL) { 274 printf("Register window %d, caller %s+%lx\n", 275 i, sym, off); 276 } else { 277 printf("Register window %d, caller %lx\n", 278 i, wp->rw_in[7]); 279 } 280 281 if (i == rp->ptl1_cwp) { 282 struct rwindow *nwp; 283 284 if (i == MAXWIN - 1) 285 nwp = &rp->ptl1_rwindow[0]; 286 else 287 nwp = &rp->ptl1_rwindow[i+1]; 288 printf("%%o0-3: %016lx %016lx %016lx %016lx\n" 289 "%%o4-7: %016lx %016lx %016lx %016lx\n", 290 nwp->rw_in[0], nwp->rw_in[1], nwp->rw_in[2], 291 nwp->rw_in[3], nwp->rw_in[4], nwp->rw_in[5], 292 nwp->rw_in[6], nwp->rw_in[7]); 293 } 294 printf("%%l0-3: %016lx %016lx %016lx %016lx\n" 295 "%%l4-7: %016lx %016lx %016lx %016lx\n", 296 wp->rw_local[0], wp->rw_local[1], wp->rw_local[2], 297 wp->rw_local[3], wp->rw_local[4], wp->rw_local[5], 298 wp->rw_local[6], wp->rw_local[7]); 299 300 printf("%%i0-3: %016lx %016lx %016lx %016lx\n" 301 "%%i4-7: %016lx %016lx %016lx %016lx\n", 302 wp->rw_in[0], wp->rw_in[1], wp->rw_in[2], wp->rw_in[3], 303 wp->rw_in[4], wp->rw_in[5], wp->rw_in[6], wp->rw_in[7]); 304 } 305 } 306 307 void 308 panic_showtrap(struct trap_info *tip) 309 { 310 ptl1_state_t *pstate = &CPU->cpu_m.ptl1_state; 311 /* 312 * If ptl1_panic() was called, print out the information 313 * saved in the ptl1_state struture. 314 */ 315 if (pstate->ptl1_entry_count) { 316 ptl1_showtrap(pstate); 317 return; 318 } 319 320 showregs(tip->trap_type, tip->trap_regs, tip->trap_addr, 321 tip->trap_mmu_fsr); 322 } 323 324 static void 325 ptl1_savetrap(panic_data_t *pdp, ptl1_state_t *pstate) 326 { 327 ptl1_regs_t *rp = &pstate->ptl1_regs; 328 short i, maxtl = rp->ptl1_trap_regs[0].ptl1_tl; 329 panic_nv_t *pnv = PANICNVGET(pdp); 330 char name[PANICNVNAMELEN]; 331 332 for (i = maxtl - 1; i >= 0; i--) { 333 ptl1_trapregs_t *ptp = &rp->ptl1_trap_regs[i]; 334 335 (void) snprintf(name, sizeof (name), "tl[%d]", i); 336 PANICNVADD(pnv, name, ptp->ptl1_tl); 337 (void) snprintf(name, sizeof (name), "tt[%d]", i); 338 PANICNVADD(pnv, name, ptp->ptl1_tt); 339 (void) snprintf(name, sizeof (name), "tpc[%d]", i); 340 PANICNVADD(pnv, name, ptp->ptl1_tpc); 341 (void) snprintf(name, sizeof (name), "tnpc[%d]", i); 342 PANICNVADD(pnv, name, ptp->ptl1_tnpc); 343 (void) snprintf(name, sizeof (name), "tstate[%d]", i); 344 PANICNVADD(pnv, name, ptp->ptl1_tstate); 345 } 346 347 PANICNVSET(pdp, pnv); 348 } 349 350 void 351 panic_savetrap(panic_data_t *pdp, struct trap_info *tip) 352 { 353 panic_nv_t *pnv; 354 ptl1_state_t *pstate = &CPU->cpu_m.ptl1_state; 355 /* 356 * If ptl1_panic() was called, save the trap registers 357 * stored in the ptl1_state struture. 358 */ 359 if (pstate->ptl1_entry_count) { 360 ptl1_savetrap(pdp, pstate); 361 return; 362 } 363 364 panic_saveregs(pdp, tip->trap_regs); 365 pnv = PANICNVGET(pdp); 366 367 PANICNVADD(pnv, "sfsr", tip->trap_mmu_fsr); 368 PANICNVADD(pnv, "sfar", tip->trap_addr); 369 PANICNVADD(pnv, "tt", tip->trap_type); 370 371 PANICNVSET(pdp, pnv); 372 } 373