17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5843e1988Sjohnlev * Common Development and Distribution License (the "License"). 6843e1988Sjohnlev * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22*7b9b3bf3Sedp * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 237c478bd9Sstevel@tonic-gate * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 277c478bd9Sstevel@tonic-gate 287c478bd9Sstevel@tonic-gate /* 297c478bd9Sstevel@tonic-gate * Libkvm Kernel Target Intel 32-bit component 307c478bd9Sstevel@tonic-gate * 317c478bd9Sstevel@tonic-gate * This file provides the ISA-dependent portion of the libkvm kernel target. 327c478bd9Sstevel@tonic-gate * For more details on the implementation refer to mdb_kvm.c. 337c478bd9Sstevel@tonic-gate */ 347c478bd9Sstevel@tonic-gate 357c478bd9Sstevel@tonic-gate #include <sys/types.h> 367c478bd9Sstevel@tonic-gate #include <sys/regset.h> 377c478bd9Sstevel@tonic-gate #include <sys/frame.h> 387c478bd9Sstevel@tonic-gate #include <sys/stack.h> 397c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h> 407c478bd9Sstevel@tonic-gate #include <sys/panic.h> 417c478bd9Sstevel@tonic-gate #include <strings.h> 427c478bd9Sstevel@tonic-gate 437c478bd9Sstevel@tonic-gate #include <mdb/mdb_target_impl.h> 447c478bd9Sstevel@tonic-gate #include <mdb/mdb_disasm.h> 457c478bd9Sstevel@tonic-gate #include <mdb/mdb_modapi.h> 467c478bd9Sstevel@tonic-gate #include <mdb/mdb_conf.h> 477c478bd9Sstevel@tonic-gate #include <mdb/mdb_kreg_impl.h> 487c478bd9Sstevel@tonic-gate #include <mdb/mdb_ia32util.h> 49843e1988Sjohnlev #include <mdb/kvm_isadep.h> 507c478bd9Sstevel@tonic-gate #include <mdb/mdb_kvm.h> 517c478bd9Sstevel@tonic-gate #include <mdb/mdb_err.h> 527c478bd9Sstevel@tonic-gate #include <mdb/mdb_debug.h> 537c478bd9Sstevel@tonic-gate #include <mdb/mdb.h> 547c478bd9Sstevel@tonic-gate 557c478bd9Sstevel@tonic-gate 567c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 577c478bd9Sstevel@tonic-gate int 587c478bd9Sstevel@tonic-gate kt_regs(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 597c478bd9Sstevel@tonic-gate { 60843e1988Sjohnlev mdb_ia32_printregs((const mdb_tgt_gregset_t *)addr); 617c478bd9Sstevel@tonic-gate return (DCMD_OK); 627c478bd9Sstevel@tonic-gate } 637c478bd9Sstevel@tonic-gate 647c478bd9Sstevel@tonic-gate static int 657c478bd9Sstevel@tonic-gate kt_stack_common(uintptr_t addr, uint_t flags, int argc, 667c478bd9Sstevel@tonic-gate const mdb_arg_t *argv, mdb_tgt_stack_f *func) 677c478bd9Sstevel@tonic-gate { 687c478bd9Sstevel@tonic-gate kt_data_t *kt = mdb.m_target->t_data; 697c478bd9Sstevel@tonic-gate void *arg = (void *)mdb.m_nargs; 707c478bd9Sstevel@tonic-gate mdb_tgt_gregset_t gregs, *grp; 717c478bd9Sstevel@tonic-gate 727c478bd9Sstevel@tonic-gate if (flags & DCMD_ADDRSPEC) { 737c478bd9Sstevel@tonic-gate bzero(&gregs, sizeof (gregs)); 747c478bd9Sstevel@tonic-gate gregs.kregs[KREG_EBP] = addr; 757c478bd9Sstevel@tonic-gate grp = &gregs; 767c478bd9Sstevel@tonic-gate } else 777c478bd9Sstevel@tonic-gate grp = kt->k_regs; 787c478bd9Sstevel@tonic-gate 797c478bd9Sstevel@tonic-gate if (argc != 0) { 807c478bd9Sstevel@tonic-gate if (argv->a_type == MDB_TYPE_CHAR || argc > 1) 817c478bd9Sstevel@tonic-gate return (DCMD_USAGE); 827c478bd9Sstevel@tonic-gate 837c478bd9Sstevel@tonic-gate if (argv->a_type == MDB_TYPE_STRING) 847c478bd9Sstevel@tonic-gate arg = (void *)(uint_t)mdb_strtoull(argv->a_un.a_str); 857c478bd9Sstevel@tonic-gate else 867c478bd9Sstevel@tonic-gate arg = (void *)(uint_t)argv->a_un.a_val; 877c478bd9Sstevel@tonic-gate } 887c478bd9Sstevel@tonic-gate 897c478bd9Sstevel@tonic-gate (void) mdb_ia32_kvm_stack_iter(mdb.m_target, grp, func, arg); 907c478bd9Sstevel@tonic-gate return (DCMD_OK); 917c478bd9Sstevel@tonic-gate } 927c478bd9Sstevel@tonic-gate 93843e1988Sjohnlev int 947c478bd9Sstevel@tonic-gate kt_stack(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 957c478bd9Sstevel@tonic-gate { 967c478bd9Sstevel@tonic-gate return (kt_stack_common(addr, flags, argc, argv, mdb_ia32_kvm_frame)); 977c478bd9Sstevel@tonic-gate } 987c478bd9Sstevel@tonic-gate 99843e1988Sjohnlev int 1007c478bd9Sstevel@tonic-gate kt_stackv(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 1017c478bd9Sstevel@tonic-gate { 1027c478bd9Sstevel@tonic-gate return (kt_stack_common(addr, flags, argc, argv, mdb_ia32_kvm_framev)); 1037c478bd9Sstevel@tonic-gate } 1047c478bd9Sstevel@tonic-gate 1057c478bd9Sstevel@tonic-gate const mdb_tgt_ops_t kt_ia32_ops = { 1067c478bd9Sstevel@tonic-gate kt_setflags, /* t_setflags */ 1077c478bd9Sstevel@tonic-gate kt_setcontext, /* t_setcontext */ 1087c478bd9Sstevel@tonic-gate kt_activate, /* t_activate */ 1097c478bd9Sstevel@tonic-gate kt_deactivate, /* t_deactivate */ 1107c478bd9Sstevel@tonic-gate (void (*)()) mdb_tgt_nop, /* t_periodic */ 1117c478bd9Sstevel@tonic-gate kt_destroy, /* t_destroy */ 1127c478bd9Sstevel@tonic-gate kt_name, /* t_name */ 1137c478bd9Sstevel@tonic-gate (const char *(*)()) mdb_conf_isa, /* t_isa */ 1147c478bd9Sstevel@tonic-gate kt_platform, /* t_platform */ 1157c478bd9Sstevel@tonic-gate kt_uname, /* t_uname */ 1167c478bd9Sstevel@tonic-gate kt_dmodel, /* t_dmodel */ 1177c478bd9Sstevel@tonic-gate kt_aread, /* t_aread */ 1187c478bd9Sstevel@tonic-gate kt_awrite, /* t_awrite */ 1197c478bd9Sstevel@tonic-gate kt_vread, /* t_vread */ 1207c478bd9Sstevel@tonic-gate kt_vwrite, /* t_vwrite */ 1217c478bd9Sstevel@tonic-gate kt_pread, /* t_pread */ 1227c478bd9Sstevel@tonic-gate kt_pwrite, /* t_pwrite */ 1237c478bd9Sstevel@tonic-gate kt_fread, /* t_fread */ 1247c478bd9Sstevel@tonic-gate kt_fwrite, /* t_fwrite */ 1257c478bd9Sstevel@tonic-gate (ssize_t (*)()) mdb_tgt_notsup, /* t_ioread */ 1267c478bd9Sstevel@tonic-gate (ssize_t (*)()) mdb_tgt_notsup, /* t_iowrite */ 1277c478bd9Sstevel@tonic-gate kt_vtop, /* t_vtop */ 1287c478bd9Sstevel@tonic-gate kt_lookup_by_name, /* t_lookup_by_name */ 1297c478bd9Sstevel@tonic-gate kt_lookup_by_addr, /* t_lookup_by_addr */ 1307c478bd9Sstevel@tonic-gate kt_symbol_iter, /* t_symbol_iter */ 1317c478bd9Sstevel@tonic-gate kt_mapping_iter, /* t_mapping_iter */ 1327c478bd9Sstevel@tonic-gate kt_object_iter, /* t_object_iter */ 1337c478bd9Sstevel@tonic-gate kt_addr_to_map, /* t_addr_to_map */ 1347c478bd9Sstevel@tonic-gate kt_name_to_map, /* t_name_to_map */ 1357c478bd9Sstevel@tonic-gate kt_addr_to_ctf, /* t_addr_to_ctf */ 1367c478bd9Sstevel@tonic-gate kt_name_to_ctf, /* t_name_to_ctf */ 1377c478bd9Sstevel@tonic-gate kt_status, /* t_status */ 1387c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_notsup, /* t_run */ 1397c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_notsup, /* t_step */ 1407c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_notsup, /* t_step_out */ 1417c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_notsup, /* t_step_branch */ 1427c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_notsup, /* t_next */ 1437c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_notsup, /* t_cont */ 1447c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_notsup, /* t_signal */ 1457c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_null, /* t_add_vbrkpt */ 1467c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_null, /* t_add_sbrkpt */ 1477c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_null, /* t_add_pwapt */ 1487c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_null, /* t_add_vwapt */ 1497c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_null, /* t_add_iowapt */ 1507c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_null, /* t_add_sysenter */ 1517c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_null, /* t_add_sysexit */ 1527c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_null, /* t_add_signal */ 1537c478bd9Sstevel@tonic-gate (int (*)()) mdb_tgt_null, /* t_add_fault */ 1547c478bd9Sstevel@tonic-gate kt_getareg, /* t_getareg */ 1557c478bd9Sstevel@tonic-gate kt_putareg, /* t_putareg */ 1567c478bd9Sstevel@tonic-gate mdb_ia32_kvm_stack_iter, /* t_stack_iter */ 157*7b9b3bf3Sedp (int (*)()) mdb_tgt_notsup /* t_auxv */ 1587c478bd9Sstevel@tonic-gate }; 1597c478bd9Sstevel@tonic-gate 1607c478bd9Sstevel@tonic-gate void 161843e1988Sjohnlev kt_regs_to_kregs(struct regs *regs, mdb_tgt_gregset_t *gregs) 162843e1988Sjohnlev { 163843e1988Sjohnlev gregs->kregs[KREG_SAVFP] = regs->r_savfp; 164843e1988Sjohnlev gregs->kregs[KREG_SAVPC] = regs->r_savpc; 165843e1988Sjohnlev gregs->kregs[KREG_EAX] = regs->r_eax; 166843e1988Sjohnlev gregs->kregs[KREG_EBX] = regs->r_ebx; 167843e1988Sjohnlev gregs->kregs[KREG_ECX] = regs->r_ecx; 168843e1988Sjohnlev gregs->kregs[KREG_EDX] = regs->r_edx; 169843e1988Sjohnlev gregs->kregs[KREG_ESI] = regs->r_esi; 170843e1988Sjohnlev gregs->kregs[KREG_EDI] = regs->r_edi; 171843e1988Sjohnlev gregs->kregs[KREG_EBP] = regs->r_ebp; 172843e1988Sjohnlev gregs->kregs[KREG_ESP] = regs->r_esp; 173843e1988Sjohnlev gregs->kregs[KREG_CS] = regs->r_cs; 174843e1988Sjohnlev gregs->kregs[KREG_DS] = regs->r_ds; 175843e1988Sjohnlev gregs->kregs[KREG_SS] = regs->r_ss; 176843e1988Sjohnlev gregs->kregs[KREG_ES] = regs->r_es; 177843e1988Sjohnlev gregs->kregs[KREG_FS] = regs->r_fs; 178843e1988Sjohnlev gregs->kregs[KREG_GS] = regs->r_gs; 179843e1988Sjohnlev gregs->kregs[KREG_EFLAGS] = regs->r_efl; 180843e1988Sjohnlev gregs->kregs[KREG_EIP] = regs->r_eip; 181843e1988Sjohnlev gregs->kregs[KREG_UESP] = regs->r_uesp; 182843e1988Sjohnlev gregs->kregs[KREG_TRAPNO] = regs->r_trapno; 183843e1988Sjohnlev gregs->kregs[KREG_ERR] = regs->r_err; 184843e1988Sjohnlev } 185843e1988Sjohnlev 186843e1988Sjohnlev void 1877c478bd9Sstevel@tonic-gate kt_ia32_init(mdb_tgt_t *t) 1887c478bd9Sstevel@tonic-gate { 1897c478bd9Sstevel@tonic-gate kt_data_t *kt = t->t_data; 1907c478bd9Sstevel@tonic-gate panic_data_t pd; 1917c478bd9Sstevel@tonic-gate label_t label; 1927c478bd9Sstevel@tonic-gate struct regs regs; 193843e1988Sjohnlev kreg_t *kregs; 1947c478bd9Sstevel@tonic-gate uintptr_t addr; 1957c478bd9Sstevel@tonic-gate 1967c478bd9Sstevel@tonic-gate /* 1977c478bd9Sstevel@tonic-gate * Initialize the machine-dependent parts of the kernel target 1987c478bd9Sstevel@tonic-gate * structure. Once this is complete and we fill in the ops 1997c478bd9Sstevel@tonic-gate * vector, the target is now fully constructed and we can use 2007c478bd9Sstevel@tonic-gate * the target API itself to perform the rest of our initialization. 2017c478bd9Sstevel@tonic-gate */ 2027c478bd9Sstevel@tonic-gate kt->k_rds = mdb_ia32_kregs; 2037c478bd9Sstevel@tonic-gate kt->k_regs = mdb_zalloc(sizeof (mdb_tgt_gregset_t), UM_SLEEP); 2047c478bd9Sstevel@tonic-gate kt->k_regsize = sizeof (mdb_tgt_gregset_t); 2057c478bd9Sstevel@tonic-gate kt->k_dcmd_regs = kt_regs; 2067c478bd9Sstevel@tonic-gate kt->k_dcmd_stack = kt_stack; 2077c478bd9Sstevel@tonic-gate kt->k_dcmd_stackv = kt_stackv; 2087c478bd9Sstevel@tonic-gate kt->k_dcmd_stackr = kt_stackv; 209843e1988Sjohnlev kt->k_dcmd_cpustack = kt_cpustack; 210843e1988Sjohnlev kt->k_dcmd_cpuregs = kt_cpuregs; 2117c478bd9Sstevel@tonic-gate 2127c478bd9Sstevel@tonic-gate t->t_ops = &kt_ia32_ops; 2137c478bd9Sstevel@tonic-gate kregs = kt->k_regs->kregs; 2147c478bd9Sstevel@tonic-gate 2157c478bd9Sstevel@tonic-gate (void) mdb_dis_select("ia32"); 2167c478bd9Sstevel@tonic-gate 2177c478bd9Sstevel@tonic-gate /* 2187c478bd9Sstevel@tonic-gate * Lookup the symbols corresponding to subroutines in locore.s where 2197c478bd9Sstevel@tonic-gate * we expect a saved regs structure to be pushed on the stack. When 2207c478bd9Sstevel@tonic-gate * performing stack tracebacks we will attempt to detect interrupt 2217c478bd9Sstevel@tonic-gate * frames by comparing the %eip value to these symbols. 2227c478bd9Sstevel@tonic-gate */ 2237c478bd9Sstevel@tonic-gate (void) mdb_tgt_lookup_by_name(t, MDB_TGT_OBJ_EXEC, 2247c478bd9Sstevel@tonic-gate "cmnint", &kt->k_intr_sym, NULL); 2257c478bd9Sstevel@tonic-gate 2267c478bd9Sstevel@tonic-gate (void) mdb_tgt_lookup_by_name(t, MDB_TGT_OBJ_EXEC, 2277c478bd9Sstevel@tonic-gate "cmntrap", &kt->k_trap_sym, NULL); 2287c478bd9Sstevel@tonic-gate 2297c478bd9Sstevel@tonic-gate /* 2307c478bd9Sstevel@tonic-gate * Don't attempt to load any thread or register information if 2317c478bd9Sstevel@tonic-gate * we're examining the live operating system. 2327c478bd9Sstevel@tonic-gate */ 233843e1988Sjohnlev if (kt->k_symfile != NULL && strcmp(kt->k_symfile, "/dev/ksyms") == 0) 2347c478bd9Sstevel@tonic-gate return; 2357c478bd9Sstevel@tonic-gate 2367c478bd9Sstevel@tonic-gate /* 2377c478bd9Sstevel@tonic-gate * If the panicbuf symbol is present and we can consume a panicbuf 2387c478bd9Sstevel@tonic-gate * header of the appropriate version from this address, then we can 2397c478bd9Sstevel@tonic-gate * initialize our current register set based on its contents. 2407c478bd9Sstevel@tonic-gate * Prior to the re-structuring of panicbuf, our only register data 2417c478bd9Sstevel@tonic-gate * was the panic_regs label_t, into which a setjmp() was performed, 2427c478bd9Sstevel@tonic-gate * or the panic_reg register pointer, which was only non-zero if 2437c478bd9Sstevel@tonic-gate * the system panicked as a result of a trap calling die(). 2447c478bd9Sstevel@tonic-gate */ 2457c478bd9Sstevel@tonic-gate if (mdb_tgt_readsym(t, MDB_TGT_AS_VIRT, &pd, sizeof (pd), 2467c478bd9Sstevel@tonic-gate MDB_TGT_OBJ_EXEC, "panicbuf") == sizeof (pd) && 2477c478bd9Sstevel@tonic-gate pd.pd_version == PANICBUFVERS) { 2487c478bd9Sstevel@tonic-gate 2497c478bd9Sstevel@tonic-gate size_t pd_size = MIN(PANICBUFSIZE, pd.pd_msgoff); 2507c478bd9Sstevel@tonic-gate panic_data_t *pdp = mdb_zalloc(pd_size, UM_SLEEP); 2517c478bd9Sstevel@tonic-gate uint_t i, n; 2527c478bd9Sstevel@tonic-gate 2537c478bd9Sstevel@tonic-gate (void) mdb_tgt_readsym(t, MDB_TGT_AS_VIRT, pdp, pd_size, 2547c478bd9Sstevel@tonic-gate MDB_TGT_OBJ_EXEC, "panicbuf"); 2557c478bd9Sstevel@tonic-gate 2567c478bd9Sstevel@tonic-gate n = (pd_size - (sizeof (panic_data_t) - 2577c478bd9Sstevel@tonic-gate sizeof (panic_nv_t))) / sizeof (panic_nv_t); 2587c478bd9Sstevel@tonic-gate 2597c478bd9Sstevel@tonic-gate for (i = 0; i < n; i++) { 2607c478bd9Sstevel@tonic-gate (void) kt_putareg(t, kt->k_tid, 2617c478bd9Sstevel@tonic-gate pdp->pd_nvdata[i].pnv_name, 2627c478bd9Sstevel@tonic-gate pdp->pd_nvdata[i].pnv_value); 2637c478bd9Sstevel@tonic-gate } 2647c478bd9Sstevel@tonic-gate 2657c478bd9Sstevel@tonic-gate mdb_free(pdp, pd_size); 2667c478bd9Sstevel@tonic-gate 267843e1988Sjohnlev return; 268843e1988Sjohnlev } 269843e1988Sjohnlev 270843e1988Sjohnlev if (mdb_tgt_readsym(t, MDB_TGT_AS_VIRT, &addr, sizeof (addr), 2717c478bd9Sstevel@tonic-gate MDB_TGT_OBJ_EXEC, "panic_reg") == sizeof (addr) && addr != NULL && 2727c478bd9Sstevel@tonic-gate mdb_tgt_vread(t, ®s, sizeof (regs), addr) == sizeof (regs)) { 273843e1988Sjohnlev kt_regs_to_kregs(®s, kt->k_regs); 274843e1988Sjohnlev return; 275843e1988Sjohnlev } 2767c478bd9Sstevel@tonic-gate 277843e1988Sjohnlev /* 278843e1988Sjohnlev * If we can't read any panic regs, then our penultimate try is for any 279843e1988Sjohnlev * CPU context that may have been stored (for example, in Xen core 280843e1988Sjohnlev * dumps). As this can only succeed for kernels with the above 281843e1988Sjohnlev * methods available, we let it over-ride the older panic_regs method, 282843e1988Sjohnlev * which will always manage to read the label_t, even if there's 283843e1988Sjohnlev * nothing useful there. 284843e1988Sjohnlev */ 285843e1988Sjohnlev if (kt_kvmregs(t, 0, kt->k_regs) == 0) 286843e1988Sjohnlev return; 2877c478bd9Sstevel@tonic-gate 288843e1988Sjohnlev if (mdb_tgt_readsym(t, MDB_TGT_AS_VIRT, &label, sizeof (label), 2897c478bd9Sstevel@tonic-gate MDB_TGT_OBJ_EXEC, "panic_regs") == sizeof (label)) { 2907c478bd9Sstevel@tonic-gate kregs[KREG_EDI] = label.val[0]; 2917c478bd9Sstevel@tonic-gate kregs[KREG_ESI] = label.val[1]; 2927c478bd9Sstevel@tonic-gate kregs[KREG_EBX] = label.val[2]; 2937c478bd9Sstevel@tonic-gate kregs[KREG_EBP] = label.val[3]; 2947c478bd9Sstevel@tonic-gate kregs[KREG_ESP] = label.val[4]; 2957c478bd9Sstevel@tonic-gate kregs[KREG_EIP] = label.val[5]; 296843e1988Sjohnlev return; 297843e1988Sjohnlev } 2987c478bd9Sstevel@tonic-gate 2997c478bd9Sstevel@tonic-gate warn("failed to read panicbuf, panic_reg and panic_regs -- " 3007c478bd9Sstevel@tonic-gate "current register set will be unavailable\n"); 3017c478bd9Sstevel@tonic-gate } 302