/*
* Copyright (c) 2009-2012 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
*/
/*
* Hardware trap/fault handler.
*/
#include <types.h>
#include <i386/eflags.h>
#include <i386/trap_internal.h>
#include <i386/pmap.h>
#include <i386/fpu.h>
#include <i386/panic_notify.h>
#include <mach/exception.h>
#include <mach/kern_return.h>
#include <mach/vm_param.h>
#include <mach/i386/thread_status.h>
#include <kern/kern_types.h>
#include <kern/processor.h>
#include <kern/thread.h>
#include <kern/task.h>
#include <kern/sched.h>
#include <kern/sched_prim.h>
#include <kern/exception.h>
#include <kern/spl.h>
#include <kern/misc_protos.h>
#include <kern/debug.h>
#include <sys/kdebug.h>
#include <string.h>
#include <i386/postcode.h>
#include <i386/mp_desc.h>
#include <i386/proc_reg.h>
#if CONFIG_MCA
#include <i386/machine_check.h>
#endif
#include <mach/i386/syscall_sw.h>
#include <machine/pal_routines.h>
#include <libkern/OSAtomic.h>
extern void kprintf_break_lock(void);
extern void kprint_state(x86_saved_state64_t *saved_state);
extern volatile int panic_double_fault_cpu;
#if defined(__x86_64__) && DEBUG
/*
* K64 debug - fatal handler for debug code in the trap vectors.
*/
extern void __dead2
panic_idt64(x86_saved_state_t *rsp);
void
panic_idt64(x86_saved_state_t *rsp)
{
kprint_state(saved_state64(rsp));
panic("panic_idt64");
}
#endif
__dead2
static void
panic_64(x86_saved_state_t *sp, __unused int pc, __unused const char *msg, boolean_t do_mca_dump)
{
/* Set postcode (DEBUG only) */
postcode(pc);
/*
* Issue an I/O port read if one has been requested - this is an
* event logic analyzers can use as a trigger point.
*/
panic_notify();
/*
* Break kprintf lock in case of recursion,
* and record originally faulted instruction address.
*/
kprintf_break_lock();
if (do_mca_dump) {
#if CONFIG_MCA
/*
* Dump the contents of the machine check MSRs (if any).
*/
mca_dump();
#endif
}
x86_saved_state64_t *regs = saved_state64(sp);
panic("%s at 0x%016llx, registers:\n"
"CR0: 0x%016lx, CR2: 0x%016lx, CR3: 0x%016lx, CR4: 0x%016lx\n"
"RAX: 0x%016llx, RBX: 0x%016llx, RCX: 0x%016llx, RDX: 0x%016llx\n"
"RSP: 0x%016llx, RBP: 0x%016llx, RSI: 0x%016llx, RDI: 0x%016llx\n"
"R8: 0x%016llx, R9: 0x%016llx, R10: 0x%016llx, R11: 0x%016llx\n"
"R12: 0x%016llx, R13: 0x%016llx, R14: 0x%016llx, R15: 0x%016llx\n"
"RFL: 0x%016llx, RIP: 0x%016llx, CS: 0x%016llx, SS: 0x%016llx\n"
"Error code: 0x%016llx%s\n",
msg,
regs->isf.rip,
get_cr0(), get_cr2(), get_cr3_raw(), get_cr4(),
regs->rax, regs->rbx, regs->rcx, regs->rdx,
regs->isf.rsp, regs->rbp, regs->rsi, regs->rdi,
regs->r8, regs->r9, regs->r10, regs->r11,
regs->r12, regs->r13, regs->r14, regs->r15,
regs->isf.rflags, regs->isf.rip, regs->isf.cs & 0xFFFF, regs->isf.ss & 0xFFFF,
regs->isf.err, virtualized ? " VMM" : "");
}
void
panic_double_fault64(x86_saved_state_t *sp)
{
#if DEVELOPMENT || DEBUG
uint64_t frameptr = is_saved_state64(sp) ? saved_state64(sp)->rbp : saved_state32(sp)->ebp;
(void) traptrace_start(T_DOUBLE_FAULT, saved_state64(sp)->isf.rip, mach_absolute_time(), frameptr);
#endif
(void)OSCompareAndSwap((UInt32) - 1, (UInt32) cpu_number(), (volatile UInt32 *)&panic_double_fault_cpu);
panic_64(sp, PANIC_DOUBLE_FAULT, "Double fault", FALSE);
}
void
panic_machine_check64(x86_saved_state_t *sp)
{
#if DEVELOPMENT || DEBUG
uint64_t frameptr = is_saved_state64(sp) ? saved_state64(sp)->rbp : saved_state32(sp)->ebp;
(void) traptrace_start(T_MACHINE_CHECK, saved_state64(sp)->isf.rip, mach_absolute_time(), frameptr);
#endif
panic_64(sp, PANIC_MACHINE_CHECK, "Machine Check", TRUE);
}