/*
- * Copyright (c) 2000-2010 Apple, Inc. All rights reserved.
+ * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* Basic initialization for I386 - ISA bus machines.
*/
-#include <platforms.h>
-#include <mach_kdb.h>
#include <mach/i386/vm_param.h>
#include <mach/vm_prot.h>
#include <mach/machine.h>
#include <mach/time_value.h>
+#include <sys/kdebug.h>
#include <kern/spl.h>
#include <kern/assert.h>
#include <kern/debug.h>
#include <i386/mp.h> /* mp_rendezvous_break_lock */
#include <i386/cpuid.h>
#include <i386/fpu.h>
-#include <i386/ipl.h>
+#include <i386/machine_cpu.h>
+#include <i386/pmap.h>
+#if CONFIG_MTRR
#include <i386/mtrr.h>
+#endif
+#include <i386/ucode.h>
#include <i386/pmCPU.h>
+#include <i386/panic_hooks.h>
+
#include <architecture/i386/pio.h> /* inb() */
#include <pexpert/i386/boot.h>
-#if MACH_KDB
-#include <ddb/db_aout.h>
-#endif /* MACH_KDB */
+#include <kdp/kdp_dyld.h>
+#include <kdp/kdp_core.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_kern.h>
#include <pexpert/i386/efi.h>
#include <kern/thread.h>
+#include <kern/sched.h>
#include <mach-o/loader.h>
#include <mach-o/nlist.h>
#include <libkern/kernel_mach_header.h>
+#include <libkern/OSKextLibPrivate.h>
+
+#include <mach/branch_predicates.h>
+
+#if DEBUG
+#define DPRINTF(x...) kprintf(x)
+#else
+#define DPRINTF(x...)
+#endif
static void machine_conf(void);
+void panic_print_symbol_name(vm_address_t search);
-extern int default_preemption_rate;
+extern const char version[];
+extern char osversion[];
extern int max_unsafe_quanta;
extern int max_poll_quanta;
extern unsigned int panic_is_inited;
+extern int proc_pid(void *p);
+
+/* Definitions for frame pointers */
+#define FP_ALIGNMENT_MASK ((uint32_t)(0x3))
+#define FP_LR_OFFSET ((uint32_t)4)
+#define FP_LR_OFFSET64 ((uint32_t)8)
+#define FP_MAX_NUM_TO_EVALUATE (50)
+
int db_run_mode;
volatile int pbtcpu = -1;
hw_lock_data_t pbtlock; /* backtrace print lock */
uint32_t pbtcnt = 0;
-#if defined (__i386__)
-#define PRINT_ARGS_FROM_STACK_FRAME 1
-#elif defined (__x86_64__)
-#define PRINT_ARGS_FROM_STACK_FRAME 0
-#else
-#error unsupported architecture
-#endif
+volatile int panic_double_fault_cpu = -1;
-#ifdef __LP64__
-typedef struct nlist_64 kernel_nlist_t;
-#else
-typedef struct nlist kernel_nlist_t;
-#endif
+#define PRINT_ARGS_FROM_STACK_FRAME 0
typedef struct _cframe_t {
struct _cframe_t *prev;
unsigned int debug_boot_arg;
+/*
+ * Backtrace a single frame.
+ */
+void
+print_one_backtrace(pmap_t pmap, vm_offset_t topfp, const char *cur_marker,
+ boolean_t is_64_bit, boolean_t nvram_format)
+{
+ int i = 0;
+ addr64_t lr;
+ addr64_t fp;
+ addr64_t fp_for_ppn;
+ ppnum_t ppn;
+ boolean_t dump_kernel_stack;
+
+ fp = topfp;
+ fp_for_ppn = 0;
+ ppn = (ppnum_t)NULL;
+
+ if (fp >= VM_MIN_KERNEL_ADDRESS)
+ dump_kernel_stack = TRUE;
+ else
+ dump_kernel_stack = FALSE;
+
+ do {
+ if ((fp == 0) || ((fp & FP_ALIGNMENT_MASK) != 0))
+ break;
+ if (dump_kernel_stack && ((fp < VM_MIN_KERNEL_ADDRESS) || (fp > VM_MAX_KERNEL_ADDRESS)))
+ break;
+ if ((!dump_kernel_stack) && (fp >=VM_MIN_KERNEL_ADDRESS))
+ break;
+
+ /* Check to see if current address will result in a different
+ ppn than previously computed (to avoid recomputation) via
+ (addr) ^ fp_for_ppn) >> PAGE_SHIFT) */
+
+ if ((((fp + FP_LR_OFFSET) ^ fp_for_ppn) >> PAGE_SHIFT) != 0x0U) {
+ ppn = pmap_find_phys(pmap, fp + FP_LR_OFFSET);
+ fp_for_ppn = fp + (is_64_bit ? FP_LR_OFFSET64 : FP_LR_OFFSET);
+ }
+ if (ppn != (ppnum_t)NULL) {
+ if (is_64_bit) {
+ lr = ml_phys_read_double_64(((((vm_offset_t)ppn) << PAGE_SHIFT)) | ((fp + FP_LR_OFFSET64) & PAGE_MASK));
+ } else {
+ lr = ml_phys_read_word(((((vm_offset_t)ppn) << PAGE_SHIFT)) | ((fp + FP_LR_OFFSET) & PAGE_MASK));
+ }
+ } else {
+ if (is_64_bit) {
+ kdb_printf("%s\t Could not read LR from frame at 0x%016llx\n", cur_marker, fp + FP_LR_OFFSET64);
+ } else {
+ kdb_printf("%s\t Could not read LR from frame at 0x%08x\n", cur_marker, (uint32_t)(fp + FP_LR_OFFSET));
+ }
+ break;
+ }
+ if (((fp ^ fp_for_ppn) >> PAGE_SHIFT) != 0x0U) {
+ ppn = pmap_find_phys(pmap, fp);
+ fp_for_ppn = fp;
+ }
+ if (ppn != (ppnum_t)NULL) {
+ if (is_64_bit) {
+ fp = ml_phys_read_double_64(((((vm_offset_t)ppn) << PAGE_SHIFT)) | (fp & PAGE_MASK));
+ } else {
+ fp = ml_phys_read_word(((((vm_offset_t)ppn) << PAGE_SHIFT)) | (fp & PAGE_MASK));
+ }
+ } else {
+ if (is_64_bit) {
+ kdb_printf("%s\t Could not read FP from frame at 0x%016llx\n", cur_marker, fp);
+ } else {
+ kdb_printf("%s\t Could not read FP from frame at 0x%08x\n", cur_marker, (uint32_t)fp);
+ }
+ break;
+ }
+
+ if (nvram_format) {
+ if (is_64_bit) {
+ kdb_printf("%s\t0x%016llx\n", cur_marker, lr);
+ } else {
+ kdb_printf("%s\t0x%08x\n", cur_marker, (uint32_t)lr);
+ }
+ } else {
+ if (is_64_bit) {
+ kdb_printf("%s\t lr: 0x%016llx fp: 0x%016llx\n", cur_marker, lr, fp);
+ } else {
+ kdb_printf("%s\t lr: 0x%08x fp: 0x%08x\n", cur_marker, (uint32_t)lr, (uint32_t)fp);
+ }
+ }
+ } while ((++i < FP_MAX_NUM_TO_EVALUATE) && (fp != topfp));
+}
void
machine_startup(void)
{
#endif
if (PE_parse_boot_argn("debug", &debug_boot_arg, sizeof (debug_boot_arg))) {
+ panicDebugging = TRUE;
+#if DEVELOPMENT || DEBUG
if (debug_boot_arg & DB_HALT) halt_in_debugger=1;
+#endif
if (debug_boot_arg & DB_PRT) disable_debug_output=FALSE;
if (debug_boot_arg & DB_SLOG) systemLogDiags=TRUE;
- if (debug_boot_arg & DB_NMI) panicDebugging=TRUE;
if (debug_boot_arg & DB_LOG_PI_SCRN) logPanicDataToScreen=TRUE;
+#if KDEBUG_MOJO_TRACE
+ if (debug_boot_arg & DB_PRT_KDEBUG) {
+ kdebug_serial = TRUE;
+ disable_debug_output = FALSE;
+ }
+#endif
} else {
debug_boot_arg = 0;
}
#endif
hw_lock_init(&pbtlock); /* initialize print backtrace lock */
-#if MACH_KDB
- /*
- * Initialize KDB
- */
-#if DB_MACHINE_COMMANDS
- db_machine_commands_install(ppc_db_commands);
-#endif /* DB_MACHINE_COMMANDS */
- ddb_init();
-
- if (boot_arg & DB_KDB)
- current_debugger = KDB_CUR_DB;
-
- /*
- * Cause a breakpoint trap to the debugger before proceeding
- * any further if the proper option bit was specified in
- * the boot flags.
- */
- if (halt_in_debugger && (current_debugger == KDB_CUR_DB)) {
- Debugger("inline call to debugger(machine_startup)");
- halt_in_debugger = 0;
- active_debugger =1;
- }
-#endif /* MACH_KDB */
-
if (PE_parse_boot_argn("preempt", &boot_arg, sizeof (boot_arg))) {
default_preemption_rate = boot_arg;
}
machine_conf();
-#if NOTYET
- ml_thrm_init(); /* Start thermal monitoring on this processor */
-#endif
+ panic_hooks_init();
/*
* Start the system.
uint32_t hdr_cksum;
uint32_t cksum;
- kprintf("Processing 64-bit EFI tables at %p\n", system_table);
+ DPRINTF("Processing 64-bit EFI tables at %p\n", system_table);
do {
+ DPRINTF("Header:\n");
+ DPRINTF(" Signature: 0x%016llx\n", system_table->Hdr.Signature);
+ DPRINTF(" Revision: 0x%08x\n", system_table->Hdr.Revision);
+ DPRINTF(" HeaderSize: 0x%08x\n", system_table->Hdr.HeaderSize);
+ DPRINTF(" CRC32: 0x%08x\n", system_table->Hdr.CRC32);
+ DPRINTF("RuntimeServices: 0x%016llx\n", system_table->RuntimeServices);
if (system_table->Hdr.Signature != EFI_SYSTEM_TABLE_SIGNATURE) {
kprintf("Bad EFI system table signature\n");
break;
system_table->Hdr.CRC32 = 0;
cksum = crc32(0L, system_table, system_table->Hdr.HeaderSize);
- //kprintf("System table calculated CRC32 = 0x%x, header = 0x%x\n", cksum, hdr_cksum);
+ DPRINTF("System table calculated CRC32 = 0x%x, header = 0x%x\n", cksum, hdr_cksum);
system_table->Hdr.CRC32 = hdr_cksum;
if (cksum != hdr_cksum) {
kprintf("Bad EFI system table checksum\n");
gPEEFISystemTable = system_table;
-
- if (!cpu_mode_is64bit()) {
- kprintf("Skipping 64-bit EFI runtime services for 32-bit legacy mode\n");
- break;
- }
-
if(system_table->RuntimeServices == 0) {
kprintf("No runtime table present\n");
break;
}
- kprintf("RuntimeServices table at 0x%qx\n", system_table->RuntimeServices);
+ DPRINTF("RuntimeServices table at 0x%qx\n", system_table->RuntimeServices);
// 64-bit virtual address is OK for 64-bit EFI and 64/32-bit kernel.
runtime = (EFI_RUNTIME_SERVICES_64 *) (uintptr_t)system_table->RuntimeServices;
- kprintf("Checking runtime services table %p\n", runtime);
+ DPRINTF("Checking runtime services table %p\n", runtime);
if (runtime->Hdr.Signature != EFI_RUNTIME_SERVICES_SIGNATURE) {
kprintf("Bad EFI runtime table signature\n");
break;
runtime->Hdr.CRC32 = 0;
cksum = crc32(0L, runtime, runtime->Hdr.HeaderSize);
- //kprintf("Runtime table calculated CRC32 = 0x%x, header = 0x%x\n", cksum, hdr_cksum);
+ DPRINTF("Runtime table calculated CRC32 = 0x%x, header = 0x%x\n", cksum, hdr_cksum);
runtime->Hdr.CRC32 = hdr_cksum;
if (cksum != hdr_cksum) {
kprintf("Bad EFI runtime table checksum\n");
uint32_t hdr_cksum;
uint32_t cksum;
- kprintf("Processing 32-bit EFI tables at %p\n", system_table);
+ DPRINTF("Processing 32-bit EFI tables at %p\n", system_table);
do {
+ DPRINTF("Header:\n");
+ DPRINTF(" Signature: 0x%016llx\n", system_table->Hdr.Signature);
+ DPRINTF(" Revision: 0x%08x\n", system_table->Hdr.Revision);
+ DPRINTF(" HeaderSize: 0x%08x\n", system_table->Hdr.HeaderSize);
+ DPRINTF(" CRC32: 0x%08x\n", system_table->Hdr.CRC32);
+ DPRINTF("RuntimeServices: 0x%08x\n", system_table->RuntimeServices);
if (system_table->Hdr.Signature != EFI_SYSTEM_TABLE_SIGNATURE) {
kprintf("Bad EFI system table signature\n");
break;
// Verify signature of the system table
hdr_cksum = system_table->Hdr.CRC32;
system_table->Hdr.CRC32 = 0;
+ DPRINTF("System table at %p HeaderSize 0x%x\n", system_table, system_table->Hdr.HeaderSize);
cksum = crc32(0L, system_table, system_table->Hdr.HeaderSize);
- //kprintf("System table calculated CRC32 = 0x%x, header = 0x%x\n", cksum, hdr_cksum);
+ DPRINTF("System table calculated CRC32 = 0x%x, header = 0x%x\n", cksum, hdr_cksum);
system_table->Hdr.CRC32 = hdr_cksum;
if (cksum != hdr_cksum) {
kprintf("Bad EFI system table checksum\n");
gPEEFISystemTable = system_table;
-
if(system_table->RuntimeServices == 0) {
kprintf("No runtime table present\n");
break;
}
- kprintf("RuntimeServices table at 0x%x\n", system_table->RuntimeServices);
+ DPRINTF("RuntimeServices table at 0x%x\n", system_table->RuntimeServices);
// 32-bit virtual address is OK for 32-bit EFI and 32-bit kernel.
- // For a 64-bit kernel, booter will ensure pointer is zeroed out
- runtime = (EFI_RUNTIME_SERVICES_32 *) (intptr_t)system_table->RuntimeServices;
+ // For a 64-bit kernel, booter provides a virtual address mod 4G
+ runtime = (EFI_RUNTIME_SERVICES_32 *)
+ (system_table->RuntimeServices | VM_MIN_KERNEL_ADDRESS);
+ DPRINTF("Runtime table addressed at %p\n", runtime);
if (runtime->Hdr.Signature != EFI_RUNTIME_SERVICES_SIGNATURE) {
kprintf("Bad EFI runtime table signature\n");
break;
runtime->Hdr.CRC32 = 0;
cksum = crc32(0L, runtime, runtime->Hdr.HeaderSize);
- //kprintf("Runtime table calculated CRC32 = 0x%x, header = 0x%x\n", cksum, hdr_cksum);
+ DPRINTF("Runtime table calculated CRC32 = 0x%x, header = 0x%x\n", cksum, hdr_cksum);
runtime->Hdr.CRC32 = hdr_cksum;
if (cksum != hdr_cksum) {
kprintf("Bad EFI runtime table checksum\n");
break;
}
+ DPRINTF("Runtime functions\n");
+ DPRINTF(" GetTime : 0x%x\n", runtime->GetTime);
+ DPRINTF(" SetTime : 0x%x\n", runtime->SetTime);
+ DPRINTF(" GetWakeupTime : 0x%x\n", runtime->GetWakeupTime);
+ DPRINTF(" SetWakeupTime : 0x%x\n", runtime->SetWakeupTime);
+ DPRINTF(" SetVirtualAddressMap : 0x%x\n", runtime->SetVirtualAddressMap);
+ DPRINTF(" ConvertPointer : 0x%x\n", runtime->ConvertPointer);
+ DPRINTF(" GetVariable : 0x%x\n", runtime->GetVariable);
+ DPRINTF(" GetNextVariableName : 0x%x\n", runtime->GetNextVariableName);
+ DPRINTF(" SetVariable : 0x%x\n", runtime->SetVariable);
+ DPRINTF(" GetNextHighMonotonicCount: 0x%x\n", runtime->GetNextHighMonotonicCount);
+ DPRINTF(" ResetSystem : 0x%x\n", runtime->ResetSystem);
+
gPEEFIRuntimeServices = runtime;
}
while (FALSE);
msize = args->MemoryMapDescriptorSize;
mcount = args->MemoryMapSize / msize;
+ DPRINTF("efi_init() kernel base: 0x%x size: 0x%x\n",
+ args->kaddr, args->ksize);
+ DPRINTF(" efiSystemTable physical: 0x%x virtual: %p\n",
+ args->efiSystemTable,
+ (void *) ml_static_ptovirt(args->efiSystemTable));
+ DPRINTF(" efiRuntimeServicesPageStart: 0x%x\n",
+ args->efiRuntimeServicesPageStart);
+ DPRINTF(" efiRuntimeServicesPageCount: 0x%x\n",
+ args->efiRuntimeServicesPageCount);
+ DPRINTF(" efiRuntimeServicesVirtualPageStart: 0x%016llx\n",
+ args->efiRuntimeServicesVirtualPageStart);
mptr = (EfiMemoryRange *)ml_static_ptovirt(args->MemoryMap);
for (i=0; i < mcount; i++, mptr = (EfiMemoryRange *)(((vm_offset_t)mptr) + msize)) {
if (((mptr->Attribute & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) ) {
vm_size = (vm_offset_t)i386_ptob((uint32_t)mptr->NumberOfPages);
vm_addr = (vm_offset_t) mptr->VirtualStart;
+ /* For K64 on EFI32, shadow-map into high KVA */
+ if (vm_addr < VM_MIN_KERNEL_ADDRESS)
+ vm_addr |= VM_MIN_KERNEL_ADDRESS;
phys_addr = (vm_map_offset_t) mptr->PhysicalStart;
-#if defined(__i386__)
- pmap_map
-#elif defined(__x86_64__)
- pmap_map_bd /* K64todo resolve pmap layer inconsistency */
-#endif
- (vm_addr, phys_addr, phys_addr + round_page(vm_size),
+ DPRINTF(" Type: %x phys: %p EFIv: %p kv: %p size: %p\n",
+ mptr->Type,
+ (void *) (uintptr_t) phys_addr,
+ (void *) (uintptr_t) mptr->VirtualStart,
+ (void *) vm_addr,
+ (void *) vm_size);
+ pmap_map_bd(vm_addr, phys_addr, phys_addr + round_page(vm_size),
(mptr->Type == kEfiRuntimeServicesCode) ? VM_PROT_READ | VM_PROT_EXECUTE : VM_PROT_READ|VM_PROT_WRITE,
(mptr->Type == EfiMemoryMappedIO) ? VM_WIMG_IO : VM_WIMG_USE_DEFAULT);
}
}
- if ((args->Version != kBootArgsVersion1) || (args->Version == kBootArgsVersion1 && args->Revision < kBootArgsRevision1_5 ))
+ if (args->Version != kBootArgsVersion2)
panic("Incompatible boot args version %d revision %d\n", args->Version, args->Revision);
- kprintf("Boot args version %d revision %d mode %d\n", args->Version, args->Revision, args->efiMode);
+ DPRINTF("Boot args version %d revision %d mode %d\n", args->Version, args->Revision, args->efiMode);
if (args->efiMode == kBootArgsEfiMode64) {
efi_set_tables_64((EFI_SYSTEM_TABLE_64 *) ml_static_ptovirt(args->efiSystemTable));
} else {
kprintf("Reinitializing EFI runtime services\n");
- if (args->Version != kBootArgsVersion1)
- return;
do
{
vm_offset_t vm_size, vm_addr;
vm_size = (vm_offset_t)i386_ptob((uint32_t)mptr->NumberOfPages);
vm_addr = (vm_offset_t) mptr->VirtualStart;
+ /* K64 on EFI32 */
+ if (vm_addr < VM_MIN_KERNEL_ADDRESS)
+ vm_addr |= VM_MIN_KERNEL_ADDRESS;
phys_addr = (vm_map_offset_t) mptr->PhysicalStart;
kprintf("mapping[%u] %qx @ %lx, %llu\n", mptr->Type, phys_addr, (unsigned long)vm_addr, mptr->NumberOfPages);
vm_size = (vm_offset_t)i386_ptob((uint32_t)mptr->NumberOfPages);
vm_addr = (vm_offset_t) mptr->VirtualStart;
+ if (vm_addr < VM_MIN_KERNEL_ADDRESS)
+ vm_addr |= VM_MIN_KERNEL_ADDRESS;
phys_addr = (vm_map_offset_t) mptr->PhysicalStart;
kprintf("mapping[%u] %qx @ %lx, %llu\n", mptr->Type, phys_addr, (unsigned long)vm_addr, mptr->NumberOfPages);
-#if defined(__i386__)
- pmap_map
-#elif defined(__x86_64__)
- pmap_map_bd /* K64todo resolve pmap layer inconsistency */
-#endif
- (vm_addr, phys_addr, phys_addr + round_page(vm_size),
+ pmap_map(vm_addr, phys_addr, phys_addr + round_page(vm_size),
(mptr->Type == kEfiRuntimeServicesCode) ? VM_PROT_READ | VM_PROT_EXECUTE : VM_PROT_READ|VM_PROT_WRITE,
(mptr->Type == EfiMemoryMappedIO) ? VM_WIMG_IO : VM_WIMG_USE_DEFAULT);
}
}
- if ((args->Version != kBootArgsVersion1) || (args->Version == kBootArgsVersion1 && args->Revision < kBootArgsRevision1_5 ))
+ if (args->Version != kBootArgsVersion2)
panic("Incompatible boot args version %d revision %d\n", args->Version, args->Revision);
kprintf("Boot args version %d revision %d mode %d\n", args->Version, args->Revision, args->efiMode);
void
machine_init(void)
{
+ /* Now with VM up, switch to dynamically allocated cpu data */
+ cpu_data_realloc();
+
/* Ensure panic buffer is initialized. */
debug_log_init();
*/
clock_config();
+#if CONFIG_MTRR
/*
* Initialize MTRR from boot processor.
*/
* Set up PAT for boot processor.
*/
pat_init();
+#endif
/*
* Free lowmem pages and complete other setup
/*
* Halt the system or reboot.
*/
+__attribute__((noreturn))
void
halt_all_cpus(boolean_t reboot)
{
/* For use with the MP rendezvous mechanism
*/
+uint64_t panic_restart_timeout = ~(0ULL);
+
+#define PANIC_RESTART_TIMEOUT (3ULL * NSEC_PER_SEC)
+
static void
-machine_halt_cpu(__unused void *arg) {
+machine_halt_cpu(void) {
+ uint64_t deadline;
+
panic_io_port_read();
+
+ /* Halt here forever if we're not rebooting */
+ if (!PE_reboot_on_panic() && panic_restart_timeout == ~(0ULL)) {
+ pmCPUHalt(PM_HALT_DEBUG);
+ return;
+ }
+
+ if (PE_reboot_on_panic())
+ deadline = mach_absolute_time() + PANIC_RESTART_TIMEOUT;
+ else
+ deadline = mach_absolute_time() + panic_restart_timeout;
+
+ while (mach_absolute_time() < deadline)
+ cpu_pause();
+
+ kprintf("Invoking PE_halt_restart\n");
+ /* Attempt restart via ACPI RESET_REG; at the time of this
+ * writing, this is routine is chained through AppleSMC->
+ * AppleACPIPlatform
+ */
+ if (PE_halt_restart)
+ (*PE_halt_restart)(kPERestartCPU);
pmCPUHalt(PM_HALT_DEBUG);
}
+static int pid_from_task(task_t task)
+{
+ int pid = -1;
+
+ if (task->bsd_info)
+ pid = proc_pid(task->bsd_info);
+
+ return pid;
+}
+
+void
+DebuggerWithContext(
+ __unused unsigned int reason,
+ __unused void *ctx,
+ const char *message,
+ uint64_t debugger_options_mask)
+{
+ if (debugger_options_mask != DEBUGGER_OPTION_NONE) {
+ kprintf("debugger options (%llx) not supported for desktop.\n", debugger_options_mask);
+ }
+
+ Debugger(message);
+}
+
void
Debugger(
const char *message)
{
unsigned long pi_size = 0;
void *stackptr;
+ int cn = cpu_number();
+
+ boolean_t old_doprnt_hide_pointers = doprnt_hide_pointers;
hw_atomic_add(&debug_mode, 1);
if (!panic_is_inited) {
asm("hlt");
}
+ doprnt_hide_pointers = FALSE;
printf("Debugger called: <%s>\n", message);
kprintf("Debugger called: <%s>\n", message);
panic_io_port_read();
/* Obtain current frame pointer */
-#if defined (__i386__)
- __asm__ volatile("movl %%ebp, %0" : "=m" (stackptr));
-#elif defined (__x86_64__)
__asm__ volatile("movq %%rbp, %0" : "=m" (stackptr));
-#endif
/* Print backtrace - callee is internally synchronized */
- panic_i386_backtrace(stackptr, 32, NULL, FALSE, NULL);
+ if (strncmp(panicstr, LAUNCHD_CRASHED_PREFIX, strlen(LAUNCHD_CRASHED_PREFIX)) == 0) {
+ /* Special handling of launchd died panics */
+ print_launchd_info();
+ } else {
+ panic_i386_backtrace(stackptr, ((panic_double_fault_cpu == cn) ? 80: 48), NULL, FALSE, NULL);
+ }
/* everything should be printed now so copy to NVRAM
*/
* since we can subsequently halt the system.
*/
- kprintf("Attempting to commit panic log to NVRAM\n");
+
/* The following sequence is a workaround for:
* <rdar://problem/5915669> SnowLeopard10A67: AppleEFINVRAM should not invoke
* any routines that use floating point (MMX in this case) when saving panic
*/
cr0 = get_cr0();
clear_ts();
-
+
+ kprintf("Attempting to commit panic log to NVRAM\n");
pi_size = PESavePanicInfo((unsigned char *)debug_buf,
(uint32_t)pi_size );
set_cr0(cr0);
+
/* Uncompress in-place, to permit examination of
* the panic log by debuggers.
*/
}
}
- /* If the user won't be able to read the dialog,
- * don't bother trying to show it
- */
- if (!PE_reboot_on_panic())
- draw_panic_dialog();
-
- if (!panicDebugging) {
+ if (!panicDebugging && !kdp_has_polled_corefile()) {
+ unsigned cnum;
/* Clear the MP rendezvous function lock, in the event
* that a panic occurred while in that codepath.
*/
mp_rendezvous_break_lock();
- if (PE_reboot_on_panic()) {
- PEHaltRestart(kPEPanicRestartCPU);
- }
- /* Force all CPUs to disable interrupts and HLT.
- * We've panicked, and shouldn't depend on the
- * PEHaltRestart() mechanism, which relies on several
- * bits of infrastructure.
+ /* Non-maskably interrupt all other processors
+ * If a restart timeout is specified, this processor
+ * will attempt a restart.
*/
- mp_rendezvous_no_intrs(machine_halt_cpu, NULL);
+ kprintf("Invoking machine_halt_cpu on CPU %d\n", cn);
+ for (cnum = 0; cnum < real_ncpus; cnum++) {
+ if (cnum != (unsigned) cn) {
+ cpu_NMI_interrupt(cnum);
+ }
+ }
+ machine_halt_cpu();
/* NOT REACHED */
}
}
+ doprnt_hide_pointers = old_doprnt_hide_pointers;
__asm__("int3");
hw_atomic_sub(&debug_mode, 1);
}
return buf;
}
-
-struct pasc {
- unsigned a: 7;
- unsigned b: 7;
- unsigned c: 7;
- unsigned d: 7;
- unsigned e: 7;
- unsigned f: 7;
- unsigned g: 7;
- unsigned h: 7;
-} __attribute__((packed));
-
-typedef struct pasc pasc_t;
-
/* Routines for address - symbol translation. Not called unless the "keepsyms"
* boot-arg is supplied.
*/
static int
-panic_print_macho_symbol_name(kernel_mach_header_t *mh, vm_address_t search)
+panic_print_macho_symbol_name(kernel_mach_header_t *mh, vm_address_t search, const char *module_name)
{
kernel_nlist_t *sym = NULL;
struct load_command *cmd;
orig_le = orig_sg;
else if (strncmp("", orig_sg->segname,
sizeof(orig_sg->segname)) == 0)
- orig_ts = orig_sg; /* kexts have a single unnamed segment */
+ orig_ts = orig_sg; /* pre-Lion i386 kexts have a single unnamed segment */
}
else if (cmd->cmd == LC_SYMTAB)
orig_st = (struct symtab_command *) cmd;
if ((orig_ts == NULL) || (orig_st == NULL) || (orig_le == NULL))
return 0;
- /* kexts don't have a LINKEDIT segment for now, so we'll never get this far for kexts */
-
- vm_offset_t slide = ((vm_address_t)mh) - orig_ts->vmaddr;
- if (slide != 0)
- search -= slide; /* adjusting search since the binary has slid */
-
if ((search < orig_ts->vmaddr) ||
(search >= orig_ts->vmaddr + orig_ts->vmsize)) {
/* search out of range for this mach header */
if (bestsym != NULL) {
if (diff != 0) {
- kdb_printf("%s + 0x%lx", bestsym, (unsigned long)diff);
+ kdb_printf("%s : %s + 0x%lx", module_name, bestsym, (unsigned long)diff);
} else {
- kdb_printf("%s", bestsym);
+ kdb_printf("%s : %s", module_name, bestsym);
}
return 1;
}
static void
panic_print_kmod_symbol_name(vm_address_t search)
{
- kmod_info_t * current_kmod = kmod;
-
- while (current_kmod != NULL) {
- if ((current_kmod->address <= search) &&
- (current_kmod->address + current_kmod->size > search))
+ u_int i;
+
+ if (gLoadedKextSummaries == NULL)
+ return;
+ for (i = 0; i < gLoadedKextSummaries->numSummaries; ++i) {
+ OSKextLoadedKextSummary *summary = gLoadedKextSummaries->summaries + i;
+
+ if ((search >= summary->address) &&
+ (search < (summary->address + summary->size)))
+ {
+ kernel_mach_header_t *header = (kernel_mach_header_t *)(uintptr_t) summary->address;
+ if (panic_print_macho_symbol_name(header, search, summary->name) == 0) {
+ kdb_printf("%s + %llu", summary->name, (unsigned long)search - summary->address);
+ }
break;
- current_kmod = current_kmod->next;
- }
- if (current_kmod != NULL) {
- /* if kexts had symbol table loaded, we'd call search_symbol_name again; alas, they don't */
- kdb_printf("%s + %lu \n", current_kmod->name, (unsigned long)search - current_kmod->address);
+ }
}
}
-static void
+void
panic_print_symbol_name(vm_address_t search)
{
/* try searching in the kernel */
- if (panic_print_macho_symbol_name(&_mh_execute_header, search) == 0) {
+ if (panic_print_macho_symbol_name(&_mh_execute_header, search, "mach_kernel") == 0) {
/* that failed, now try to search for the right kext */
panic_print_kmod_symbol_name(search);
}
volatile uint32_t *ppbtcnt = &pbtcnt;
uint64_t bt_tsc_timeout;
boolean_t keepsyms = FALSE;
+ int cn = cpu_number();
+ boolean_t old_doprnt_hide_pointers = doprnt_hide_pointers;
- if(pbtcpu != cpu_number()) {
+ if(pbtcpu != cn) {
hw_atomic_add(&pbtcnt, 1);
/* Spin on print backtrace lock, which serializes output
* Continue anyway if a timeout occurs.
*/
- hw_lock_to(&pbtlock, LockTimeOutTSC);
- pbtcpu = cpu_number();
+ hw_lock_to(&pbtlock, ~0U);
+ pbtcpu = cn;
+ }
+
+ if (__improbable(doprnt_hide_pointers == TRUE)) {
+ /* If we're called directly, the Debugger() function will not be called,
+ * so we need to reset the value in here. */
+ doprnt_hide_pointers = FALSE;
}
+ panic_check_hook();
+
PE_parse_boot_argn("keepsyms", &keepsyms, sizeof (keepsyms));
if (msg != NULL) {
}
if ((regdump == TRUE) && (regs != NULL)) {
-#if defined(__x86_64__)
x86_saved_state64_t *ss64p = saved_state64(regs);
kdb_printf(
"RAX: 0x%016llx, RBX: 0x%016llx, RCX: 0x%016llx, RDX: 0x%016llx\n"
ss64p->isf.rflags, ss64p->isf.rip, ss64p->isf.cs,
ss64p->isf.ss);
PC = ss64p->isf.rip;
-#else
- x86_saved_state32_t *ss32p = saved_state32(regs);
- kdb_printf(
- "EAX: 0x%08x, EBX: 0x%08x, ECX: 0x%08x, EDX: 0x%08x\n"
- "CR2: 0x%08x, EBP: 0x%08x, ESI: 0x%08x, EDI: 0x%08x\n"
- "EFL: 0x%08x, EIP: 0x%08x, CS: 0x%08x, DS: 0x%08x\n",
- ss32p->eax,ss32p->ebx,ss32p->ecx,ss32p->edx,
- ss32p->cr2,ss32p->ebp,ss32p->esi,ss32p->edi,
- ss32p->efl,ss32p->eip,ss32p->cs, ss32p->ds);
- PC = ss32p->eip;
-#endif
}
kdb_printf("Backtrace (CPU %d), "
#if PRINT_ARGS_FROM_STACK_FRAME
- "Frame : Return Address (4 potential args on stack)\n", cpu_number());
+ "Frame : Return Address (4 potential args on stack)\n", cn);
#else
- "Frame : Return Address\n", cpu_number());
+ "Frame : Return Address\n", cn);
#endif
for (frame_index = 0; frame_index < nframes; frame_index++) {
}
if (!kvtophys(curframep) ||
- !kvtophys(curframep + sizeof(cframe_t))) {
+ !kvtophys(curframep + sizeof(cframe_t) - 1)) {
kdb_printf("No mapping exists for frame pointer\n");
goto invalid;
}
panic_display_system_configuration();
+ doprnt_hide_pointers = old_doprnt_hide_pointers;
+
/* Release print backtrace lock, to permit other callers in the
* event of panics on multiple processors.
*/
while(*ppbtcnt && (rdtsc64() < bt_tsc_timeout));
}
-void *apic_table = NULL;
+static boolean_t
+debug_copyin(pmap_t p, uint64_t uaddr, void *dest, size_t size)
+{
+ size_t rem = size;
+ char *kvaddr = dest;
+
+ while (rem) {
+ ppnum_t upn = pmap_find_phys(p, uaddr);
+ uint64_t phys_src = ptoa_64(upn) | (uaddr & PAGE_MASK);
+ uint64_t phys_dest = kvtophys((vm_offset_t)kvaddr);
+ uint64_t src_rem = PAGE_SIZE - (phys_src & PAGE_MASK);
+ uint64_t dst_rem = PAGE_SIZE - (phys_dest & PAGE_MASK);
+ size_t cur_size = (uint32_t) MIN(src_rem, dst_rem);
+ cur_size = MIN(cur_size, rem);
+
+ if (upn && pmap_valid_page(upn) && phys_dest) {
+ bcopy_phys(phys_src, phys_dest, cur_size);
+ }
+ else
+ break;
+ uaddr += cur_size;
+ kvaddr += cur_size;
+ rem -= cur_size;
+ }
+ return (rem == 0);
+}
+
+void
+print_threads_registers(thread_t thread)
+{
+ x86_saved_state_t *savestate;
+
+ savestate = get_user_regs(thread);
+ kdb_printf(
+ "\nRAX: 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\n",
+ savestate->ss_64.rax, savestate->ss_64.rbx, savestate->ss_64.rcx, savestate->ss_64.rdx,
+ savestate->ss_64.isf.rsp, savestate->ss_64.rbp, savestate->ss_64.rsi, savestate->ss_64.rdi,
+ savestate->ss_64.r8, savestate->ss_64.r9, savestate->ss_64.r10, savestate->ss_64.r11,
+ savestate->ss_64.r12, savestate->ss_64.r13, savestate->ss_64.r14, savestate->ss_64.r15,
+ savestate->ss_64.isf.rflags, savestate->ss_64.isf.rip, savestate->ss_64.isf.cs,
+ savestate->ss_64.isf.ss);
+}
+
+void
+print_tasks_user_threads(task_t task)
+{
+ thread_t thread = current_thread();
+ x86_saved_state_t *savestate;
+ pmap_t pmap = 0;
+ uint64_t rbp;
+ const char *cur_marker = 0;
+ int j;
+
+ for (j = 0, thread = (thread_t) queue_first(&task->threads); j < task->thread_count;
+ ++j, thread = (thread_t) queue_next(&thread->task_threads)) {
+
+ kdb_printf("Thread %d: %p\n", j, thread);
+ pmap = get_task_pmap(task);
+ savestate = get_user_regs(thread);
+ rbp = savestate->ss_64.rbp;
+ kdb_printf("\t0x%016llx\n", savestate->ss_64.isf.rip);
+ print_one_backtrace(pmap, (vm_offset_t)rbp, cur_marker, TRUE, TRUE);
+ kdb_printf("\n");
+ }
+}
+
+void
+print_thread_num_that_crashed(task_t task)
+{
+ thread_t c_thread = current_thread();
+ thread_t thread;
+ int j;
+
+ for (j = 0, thread = (thread_t) queue_first(&task->threads); j < task->thread_count;
+ ++j, thread = (thread_t) queue_next(&thread->task_threads)) {
+
+ if (c_thread == thread) {
+ kdb_printf("\nThread %d crashed\n", j);
+ break;
+ }
+ }
+}
+
+#define PANICLOG_UUID_BUF_SIZE 256
+
+void print_uuid_info(task_t task)
+{
+ uint32_t uuid_info_count = 0;
+ mach_vm_address_t uuid_info_addr = 0;
+ boolean_t have_map = (task->map != NULL) && (ml_validate_nofault((vm_offset_t)(task->map), sizeof(struct _vm_map)));
+ boolean_t have_pmap = have_map && (task->map->pmap != NULL) && (ml_validate_nofault((vm_offset_t)(task->map->pmap), sizeof(struct pmap)));
+ int task_pid = pid_from_task(task);
+ char uuidbuf[PANICLOG_UUID_BUF_SIZE] = {0};
+ char *uuidbufptr = uuidbuf;
+ uint32_t k;
+
+ if (have_pmap && task->active && task_pid > 0) {
+ /* Read dyld_all_image_infos struct from task memory to get UUID array count & location */
+ struct user64_dyld_all_image_infos task_image_infos;
+ if (debug_copyin(task->map->pmap, task->all_image_info_addr,
+ &task_image_infos, sizeof(struct user64_dyld_all_image_infos))) {
+ uuid_info_count = (uint32_t)task_image_infos.uuidArrayCount;
+ uuid_info_addr = task_image_infos.uuidArray;
+ }
+
+ /* If we get a NULL uuid_info_addr (which can happen when we catch dyld
+ * in the middle of updating this data structure), we zero the
+ * uuid_info_count so that we won't even try to save load info for this task
+ */
+ if (!uuid_info_addr) {
+ uuid_info_count = 0;
+ }
+ }
+
+ if (task_pid > 0 && uuid_info_count > 0) {
+ uint32_t uuid_info_size = sizeof(struct user64_dyld_uuid_info);
+ uint32_t uuid_array_size = uuid_info_count * uuid_info_size;
+ uint32_t uuid_copy_size = 0;
+ uint32_t uuid_image_count = 0;
+ char *current_uuid_buffer = NULL;
+ /* Copy in the UUID info array. It may be nonresident, in which case just fix up nloadinfos to 0 */
+
+ kdb_printf("\nuuid info:\n");
+ while (uuid_array_size) {
+ if (uuid_array_size <= PANICLOG_UUID_BUF_SIZE) {
+ uuid_copy_size = uuid_array_size;
+ uuid_image_count = uuid_array_size/uuid_info_size;
+ } else {
+ uuid_image_count = PANICLOG_UUID_BUF_SIZE/uuid_info_size;
+ uuid_copy_size = uuid_image_count * uuid_info_size;
+ }
+ if (have_pmap && !debug_copyin(task->map->pmap, uuid_info_addr, uuidbufptr,
+ uuid_copy_size)) {
+ kdb_printf("Error!! Failed to copy UUID info for task %p pid %d\n", task, task_pid);
+ uuid_image_count = 0;
+ break;
+ }
+
+ if (uuid_image_count > 0) {
+ current_uuid_buffer = uuidbufptr;
+ for (k = 0; k < uuid_image_count; k++) {
+ kdb_printf(" %#llx", *(uint64_t *)current_uuid_buffer);
+ current_uuid_buffer += sizeof(uint64_t);
+ uint8_t *uuid = (uint8_t *)current_uuid_buffer;
+ kdb_printf("\tuuid = <%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x>\n",
+ uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], uuid[5], uuid[6], uuid[7], uuid[8],
+ uuid[9], uuid[10], uuid[11], uuid[12], uuid[13], uuid[14], uuid[15]);
+ current_uuid_buffer += 16;
+ }
+ bzero(&uuidbuf, sizeof(uuidbuf));
+ }
+ uuid_info_addr += uuid_copy_size;
+ uuid_array_size -= uuid_copy_size;
+ }
+ }
+}
+
+void print_launchd_info(void)
+{
+ task_t task = current_task();
+ thread_t thread = current_thread();
+ volatile uint32_t *ppbtcnt = &pbtcnt;
+ uint64_t bt_tsc_timeout;
+ int cn = cpu_number();
+
+ if(pbtcpu != cn) {
+ hw_atomic_add(&pbtcnt, 1);
+ /* Spin on print backtrace lock, which serializes output
+ * Continue anyway if a timeout occurs.
+ */
+ hw_lock_to(&pbtlock, ~0U);
+ pbtcpu = cn;
+ }
+
+ print_uuid_info(task);
+ print_thread_num_that_crashed(task);
+ print_threads_registers(thread);
+ print_tasks_user_threads(task);
+ kdb_printf("Mac OS version: %s\n", (osversion[0] != 0) ? osversion : "Not yet set");
+ kdb_printf("Kernel version: %s\n", version);
+ panic_display_kernel_uuid();
+ panic_display_model_name();
+
+ /* Release print backtrace lock, to permit other callers in the
+ * event of panics on multiple processors.
+ */
+ hw_lock_unlock(&pbtlock);
+ hw_atomic_sub(&pbtcnt, 1);
+ /* Wait for other processors to complete output
+ * Timeout and continue after PBT_TIMEOUT_CYCLES.
+ */
+ bt_tsc_timeout = rdtsc64() + PBT_TIMEOUT_CYCLES;
+ while(*ppbtcnt && (rdtsc64() < bt_tsc_timeout));
+
+}
projects / apple / xnu.git / blobdiff