osfmk/i386/trap_native.c

   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
 101 extern void kprintf_break_lock(void);
 102 extern void kprint_state(x86_saved_state64_t *saved_state);
 103 void panic_64(x86_saved_state_t *, int, const char *, boolean_t);
 104
 105 extern 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  */
 112 extern void
 113 panic_idt64(x86_saved_state_t *rsp);
 114 void
 115 panic_idt64(x86_saved_state_t *rsp)
 116 {
 117         kprint_state(saved_state64(rsp));
 118         panic("panic_idt64");
 119 }
 120 #endif
 121
 122
 123 void
 124 panic_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
 171 void
 172 panic_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 }
 178 void
 179
 180 panic_machine_check64(x86_saved_state_t *sp)
 181 {
 182         panic_64(sp, PANIC_MACHINE_CHECK, "Machine Check", TRUE);
 183
 184 }