1/* 2 * Copyright (c) 2009-2012 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29* @OSF_COPYRIGHT@ 30*/ 31/* 32* Mach Operating System 33* Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University 34* All Rights Reserved. 35* 36* Permission to use, copy, modify and distribute this software and its 37* documentation is hereby granted, provided that both the copyright 38* notice and this permission notice appear in all copies of the 39* software, derivative works or modified versions, and any portions 40* thereof, and that both notices appear in supporting documentation. 41* 42* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 43* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 44* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 45* 46* Carnegie Mellon requests users of this software to return to 47* 48* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 49* School of Computer Science 50* Carnegie Mellon University 51* Pittsburgh PA 15213-3890 52* 53* any improvements or extensions that they make and grant Carnegie Mellon 54* the rights to redistribute these changes. 55*/ 56/* 57*/ 58 59/* 60* Hardware trap/fault handler. 61 */ 62 63#include <types.h> 64#include <i386/eflags.h> 65#include <i386/trap.h> 66#include <i386/pmap.h> 67#include <i386/fpu.h> 68#include <i386/misc_protos.h> /* panic_io_port_read() */ 69 70#include <mach/exception.h> 71#include <mach/kern_return.h> 72#include <mach/vm_param.h> 73#include <mach/i386/thread_status.h> 74 75#include <kern/kern_types.h> 76#include <kern/processor.h> 77#include <kern/thread.h> 78#include <kern/task.h> 79#include <kern/sched.h> 80#include <kern/sched_prim.h> 81#include <kern/exception.h> 82#include <kern/spl.h> 83#include <kern/misc_protos.h> 84#include <kern/debug.h> 85 86#include <sys/kdebug.h> 87 88#include <string.h> 89 90#include <i386/postcode.h> 91#include <i386/mp_desc.h> 92#include <i386/proc_reg.h> 93#if CONFIG_MCA 94#include <i386/machine_check.h> 95#endif 96#include <mach/i386/syscall_sw.h> 97 98#include <machine/pal_routines.h> 99#include <libkern/OSAtomic.h> 100 101extern void kprintf_break_lock(void); 102extern void kprint_state(x86_saved_state64_t *saved_state); 103void panic_64(x86_saved_state_t *, int, const char *, boolean_t); 104 105extern volatile int panic_double_fault_cpu; 106 107 108#if defined(__x86_64__) && DEBUG 109/* 110 * K64 debug - fatal handler for debug code in the trap vectors. 111 */ 112extern void 113panic_idt64(x86_saved_state_t *rsp); 114void 115panic_idt64(x86_saved_state_t *rsp) 116{ 117 kprint_state(saved_state64(rsp)); 118 panic("panic_idt64"); 119} 120#endif 121 122 123void 124panic_64(x86_saved_state_t *sp, __unused int pc, __unused const char *msg, boolean_t do_mca_dump) 125{ 126 /* Set postcode (DEBUG only) */ 127 postcode(pc); 128 129 /* 130 * Issue an I/O port read if one has been requested - this is an 131 * event logic analyzers can use as a trigger point. 132 */ 133 panic_io_port_read(); 134 135 136 /* 137 * Break kprintf lock in case of recursion, 138 * and record originally faulted instruction address. 139 */ 140 kprintf_break_lock(); 141 142 if (do_mca_dump) { 143#if CONFIG_MCA 144 /* 145 * Dump the contents of the machine check MSRs (if any). 146 */ 147 mca_dump(); 148#endif 149 } 150 151 x86_saved_state64_t *regs = saved_state64(sp); 152 panic("%s at 0x%016llx, registers:\n" 153 "CR0: 0x%016lx, CR2: 0x%016lx, CR3: 0x%016lx, CR4: 0x%016lx\n" 154 "RAX: 0x%016llx, RBX: 0x%016llx, RCX: 0x%016llx, RDX: 0x%016llx\n" 155 "RSP: 0x%016llx, RBP: 0x%016llx, RSI: 0x%016llx, RDI: 0x%016llx\n" 156 "R8: 0x%016llx, R9: 0x%016llx, R10: 0x%016llx, R11: 0x%016llx\n" 157 "R12: 0x%016llx, R13: 0x%016llx, R14: 0x%016llx, R15: 0x%016llx\n" 158 "RFL: 0x%016llx, RIP: 0x%016llx, CS: 0x%016llx, SS: 0x%016llx\n" 159 "Error code: 0x%016llx%s\n", 160 msg, 161 regs->isf.rip, 162 get_cr0(), get_cr2(), get_cr3_raw(), get_cr4(), 163 regs->rax, regs->rbx, regs->rcx, regs->rdx, 164 regs->isf.rsp, regs->rbp, regs->rsi, regs->rdi, 165 regs->r8, regs->r9, regs->r10, regs->r11, 166 regs->r12, regs->r13, regs->r14, regs->r15, 167 regs->isf.rflags, regs->isf.rip, regs->isf.cs & 0xFFFF, regs->isf.ss & 0xFFFF, 168 regs->isf.err, virtualized ? " VMM" : ""); 169} 170 171void 172panic_double_fault64(x86_saved_state_t *sp) 173{ 174 (void)OSCompareAndSwap((UInt32) -1, (UInt32) cpu_number(), (volatile UInt32 *)&panic_double_fault_cpu); 175 panic_64(sp, PANIC_DOUBLE_FAULT, "Double fault", FALSE); 176 177} 178void 179 180panic_machine_check64(x86_saved_state_t *sp) 181{ 182 panic_64(sp, PANIC_MACHINE_CHECK, "Machine Check", TRUE); 183 184} 185