/*
- * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <i386/pmap.h>
#include <i386/fpu.h>
#include <i386/misc_protos.h> /* panic_io_port_read() */
+#include <i386/lapic.h>
#include <mach/exception.h>
#include <mach/kern_return.h>
#include <kern/exception.h>
#include <kern/spl.h>
#include <kern/misc_protos.h>
+#include <kern/debug.h>
#include <sys/kdebug.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 <libkern/OSDebug.h>
+
+#include <machine/pal_routines.h>
-extern void throttle_lowpri_io(boolean_t);
+extern void throttle_lowpri_io(int);
+extern void kprint_state(x86_saved_state64_t *saved_state);
/*
* Forward declarations
*/
static void user_page_fault_continue(kern_return_t kret);
+#ifdef __i386__
static void panic_trap(x86_saved_state32_t *saved_state);
static void set_recovery_ip(x86_saved_state32_t *saved_state, vm_offset_t ip);
+extern void panic_64(x86_saved_state_t *, int, const char *, boolean_t);
+#else
+static void panic_trap(x86_saved_state64_t *saved_state);
+static void set_recovery_ip(x86_saved_state64_t *saved_state, vm_offset_t ip);
+#endif
-perfCallback perfTrapHook = NULL; /* Pointer to CHUD trap hook routine */
-perfCallback perfASTHook = NULL; /* Pointer to CHUD AST hook routine */
+volatile perfCallback perfTrapHook = NULL; /* Pointer to CHUD trap hook routine */
#if CONFIG_DTRACE
/* See <rdar://problem/4613924> */
kern_return_t ret)
{
thread_t thr_act = current_thread();
+ boolean_t is_mach;
+ int code;
+
+ pal_register_cache_state(thr_act, DIRTY);
if (thread_is_64bit(thr_act)) {
x86_saved_state64_t *regs;
regs = USER_REGS64(thr_act);
- if (kdebug_enable && ((regs->rax & SYSCALL_CLASS_MASK) == (SYSCALL_CLASS_MACH << SYSCALL_CLASS_SHIFT))) {
+ code = (int) (regs->rax & SYSCALL_NUMBER_MASK);
+ is_mach = (regs->rax & SYSCALL_CLASS_MASK)
+ == (SYSCALL_CLASS_MACH << SYSCALL_CLASS_SHIFT);
+ if (kdebug_enable && is_mach) {
/* Mach trap */
KERNEL_DEBUG_CONSTANT(
- MACHDBG_CODE(DBG_MACH_EXCP_SC, ((int) (regs->rax & SYSCALL_NUMBER_MASK)))
- | DBG_FUNC_END,
- ret, 0, 0, 0, 0);
+ MACHDBG_CODE(DBG_MACH_EXCP_SC,code)|DBG_FUNC_END,
+ ret, 0, 0, 0, 0);
}
regs->rax = ret;
-
+#if DEBUG
+ if (is_mach)
+ DEBUG_KPRINT_SYSCALL_MACH(
+ "thread_syscall_return: 64-bit mach ret=%u\n",
+ ret);
+ else
+ DEBUG_KPRINT_SYSCALL_UNIX(
+ "thread_syscall_return: 64-bit unix ret=%u\n",
+ ret);
+#endif
} else {
x86_saved_state32_t *regs;
regs = USER_REGS32(thr_act);
- if (kdebug_enable && ((int) regs->eax < 0)) {
+ code = ((int) regs->eax);
+ is_mach = (code < 0);
+ if (kdebug_enable && is_mach) {
/* Mach trap */
KERNEL_DEBUG_CONSTANT(
- MACHDBG_CODE(DBG_MACH_EXCP_SC, -((int) regs->eax))
- | DBG_FUNC_END,
- ret, 0, 0, 0, 0);
+ MACHDBG_CODE(DBG_MACH_EXCP_SC,-code)|DBG_FUNC_END,
+ ret, 0, 0, 0, 0);
}
regs->eax = ret;
+#if DEBUG
+ if (is_mach)
+ DEBUG_KPRINT_SYSCALL_MACH(
+ "thread_syscall_return: 32-bit mach ret=%u\n",
+ ret);
+ else
+ DEBUG_KPRINT_SYSCALL_UNIX(
+ "thread_syscall_return: 32-bit unix ret=%u\n",
+ ret);
+#endif
}
throttle_lowpri_io(TRUE);
thread_t thr_act = current_thread();
x86_saved_state_t *iss = USER_STATE(thr_act);
+ pal_register_cache_state(thr_act, DIRTY);
+
if (is_saved_state64(iss)) {
x86_saved_state64_t *regs;
#endif /* MACH_KDB */
-void
+static inline void
user_page_fault_continue(
kern_return_t kr)
{
thread_t thread = current_thread();
- ast_t *myast;
- boolean_t intr;
user_addr_t vaddr;
+
#if MACH_KDB
x86_saved_state_t *regs = USER_STATE(thread);
int err;
#if MACH_KDB
trapno = uregs->isf.trapno;
- err = uregs->isf.err;
+ err = (int)uregs->isf.err;
#endif
vaddr = (user_addr_t)uregs->cr2;
} else {
vaddr = uregs->cr2;
}
- if ((kr == KERN_SUCCESS) || (kr == KERN_ABORTED)) {
+ if (__probable((kr == KERN_SUCCESS) || (kr == KERN_ABORTED))) {
#if MACH_KDB
if (!db_breakpoints_inserted) {
db_set_breakpoints();
saved_state32(regs)))
kdb_trap(T_WATCHPOINT, 0, saved_state32(regs));
#endif /* MACH_KDB */
- intr = ml_set_interrupts_enabled(FALSE);
- myast = ast_pending();
- while (*myast & AST_ALL) {
- ast_taken(AST_ALL, intr);
- ml_set_interrupts_enabled(FALSE);
- myast = ast_pending();
- }
- ml_set_interrupts_enabled(intr);
-
thread_exception_return();
/*NOTREACHED*/
}
}
#endif /* MACH_KDB */
+ /* PAL debug hook */
+ pal_dbg_page_fault( thread, vaddr, kr );
+
i386_exception(EXC_BAD_ACCESS, kr, vaddr);
/*NOTREACHED*/
}
* Fault recovery in copyin/copyout routines.
*/
struct recovery {
- uint32_t fault_addr;
- uint32_t recover_addr;
+ uintptr_t fault_addr;
+ uintptr_t recover_addr;
};
extern struct recovery recover_table[];
const char * trap_type[] = {TRAP_NAMES};
unsigned TRAP_TYPES = sizeof(trap_type)/sizeof(trap_type[0]);
+extern void PE_incoming_interrupt(int interrupt);
+
+#if defined(__x86_64__) && DEBUG
+void
+kprint_state(x86_saved_state64_t *saved_state)
+{
+ kprintf("current_cpu_datap() 0x%lx\n", (uintptr_t)current_cpu_datap());
+ kprintf("Current GS base MSR 0x%llx\n", rdmsr64(MSR_IA32_GS_BASE));
+ kprintf("Kernel GS base MSR 0x%llx\n", rdmsr64(MSR_IA32_KERNEL_GS_BASE));
+ kprintf("state at 0x%lx:\n", (uintptr_t) saved_state);
+
+ kprintf(" rdi 0x%llx\n", saved_state->rdi);
+ kprintf(" rsi 0x%llx\n", saved_state->rsi);
+ kprintf(" rdx 0x%llx\n", saved_state->rdx);
+ kprintf(" r10 0x%llx\n", saved_state->r10);
+ kprintf(" r8 0x%llx\n", saved_state->r8);
+ kprintf(" r9 0x%llx\n", saved_state->r9);
+ kprintf(" v_arg6 0x%llx\n", saved_state->v_arg6);
+ kprintf(" v_arg7 0x%llx\n", saved_state->v_arg7);
+ kprintf(" v_arg8 0x%llx\n", saved_state->v_arg8);
+
+ kprintf(" cr2 0x%llx\n", saved_state->cr2);
+ kprintf("real cr2 0x%lx\n", get_cr2());
+ kprintf(" r15 0x%llx\n", saved_state->r15);
+ kprintf(" r14 0x%llx\n", saved_state->r14);
+ kprintf(" r13 0x%llx\n", saved_state->r13);
+ kprintf(" r12 0x%llx\n", saved_state->r12);
+ kprintf(" r11 0x%llx\n", saved_state->r11);
+ kprintf(" rbp 0x%llx\n", saved_state->rbp);
+ kprintf(" rbx 0x%llx\n", saved_state->rbx);
+ kprintf(" rcx 0x%llx\n", saved_state->rcx);
+ kprintf(" rax 0x%llx\n", saved_state->rax);
+
+ kprintf(" gs 0x%x\n", saved_state->gs);
+ kprintf(" fs 0x%x\n", saved_state->fs);
+
+ kprintf(" isf.trapno 0x%x\n", saved_state->isf.trapno);
+ kprintf(" isf._pad 0x%x\n", saved_state->isf._pad);
+ kprintf(" isf.trapfn 0x%llx\n", saved_state->isf.trapfn);
+ kprintf(" isf.err 0x%llx\n", saved_state->isf.err);
+ kprintf(" isf.rip 0x%llx\n", saved_state->isf.rip);
+ kprintf(" isf.cs 0x%llx\n", saved_state->isf.cs);
+ kprintf(" isf.rflags 0x%llx\n", saved_state->isf.rflags);
+ kprintf(" isf.rsp 0x%llx\n", saved_state->isf.rsp);
+ kprintf(" isf.ss 0x%llx\n", saved_state->isf.ss);
+}
+#endif
+
+
+/*
+ * Non-zero indicates latency assert is enabled and capped at valued
+ * absolute time units.
+ */
+
+uint64_t interrupt_latency_cap = 0;
+boolean_t ilat_assert = FALSE;
+
+void
+interrupt_latency_tracker_setup(void) {
+ uint32_t ilat_cap_us;
+ if (PE_parse_boot_argn("interrupt_latency_cap_us", &ilat_cap_us, sizeof(ilat_cap_us))) {
+ interrupt_latency_cap = ilat_cap_us * NSEC_PER_USEC;
+ nanoseconds_to_absolutetime(interrupt_latency_cap, &interrupt_latency_cap);
+ } else {
+ interrupt_latency_cap = LockTimeOut;
+ }
+ PE_parse_boot_argn("-interrupt_latency_assert_enable", &ilat_assert, sizeof(ilat_assert));
+}
+
+void interrupt_reset_latency_stats(void) {
+ uint32_t i;
+ for (i = 0; i < real_ncpus; i++) {
+ cpu_data_ptr[i]->cpu_max_observed_int_latency =
+ cpu_data_ptr[i]->cpu_max_observed_int_latency_vector = 0;
+ }
+}
+
+void interrupt_populate_latency_stats(char *buf, unsigned bufsize) {
+ uint32_t i, tcpu = ~0;
+ uint64_t cur_max = 0;
+
+ for (i = 0; i < real_ncpus; i++) {
+ if (cur_max < cpu_data_ptr[i]->cpu_max_observed_int_latency) {
+ cur_max = cpu_data_ptr[i]->cpu_max_observed_int_latency;
+ tcpu = i;
+ }
+ }
+
+ if (tcpu < real_ncpus)
+ snprintf(buf, bufsize, "0x%x 0x%x 0x%llx", tcpu, cpu_data_ptr[tcpu]->cpu_max_observed_int_latency_vector, cpu_data_ptr[tcpu]->cpu_max_observed_int_latency);
+}
+
+/*
+ * Handle interrupts:
+ * - local APIC interrupts (IPIs, timers, etc) are handled by the kernel,
+ * - device interrupts go to the platform expert.
+ */
+void
+interrupt(x86_saved_state_t *state)
+{
+ uint64_t rip;
+ uint64_t rsp;
+ int interrupt_num;
+ boolean_t user_mode = FALSE;
+ int ipl;
+ int cnum = cpu_number();
+
+ if (is_saved_state64(state) == TRUE) {
+ x86_saved_state64_t *state64;
+
+ state64 = saved_state64(state);
+ rip = state64->isf.rip;
+ rsp = state64->isf.rsp;
+ interrupt_num = state64->isf.trapno;
+#ifdef __x86_64__
+ if(state64->isf.cs & 0x03)
+#endif
+ user_mode = TRUE;
+ } else {
+ x86_saved_state32_t *state32;
+
+ state32 = saved_state32(state);
+ if (state32->cs & 0x03)
+ user_mode = TRUE;
+ rip = state32->eip;
+ rsp = state32->uesp;
+ interrupt_num = state32->trapno;
+ }
+
+ KERNEL_DEBUG_CONSTANT(
+ MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_START,
+ interrupt_num, rip, user_mode, 0, 0);
+
+ SCHED_STATS_INTERRUPT(current_processor());
+
+ ipl = get_preemption_level();
+
+ /*
+ * Handle local APIC interrupts
+ * else call platform expert for devices.
+ */
+ if (!lapic_interrupt(interrupt_num, state))
+ PE_incoming_interrupt(interrupt_num);
+
+ if (__improbable(get_preemption_level() != ipl)) {
+ panic("Preemption level altered by interrupt vector 0x%x: initial 0x%x, final: 0x%x\n", interrupt_num, ipl, get_preemption_level());
+ }
+
+ KERNEL_DEBUG_CONSTANT(
+ MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_END,
+ interrupt_num, 0, 0, 0, 0);
+
+ if (cpu_data_ptr[cnum]->cpu_nested_istack) {
+ cpu_data_ptr[cnum]->cpu_nested_istack_events++;
+ }
+ else {
+ uint64_t int_latency = mach_absolute_time() - cpu_data_ptr[cnum]->cpu_int_event_time;
+ if (ilat_assert && (int_latency > interrupt_latency_cap) && !machine_timeout_suspended()) {
+ panic("Interrupt vector 0x%x exceeded interrupt latency threshold, 0x%llx absolute time delta, prior signals: 0x%x, current signals: 0x%x", interrupt_num, int_latency, cpu_data_ptr[cnum]->cpu_prior_signals, cpu_data_ptr[cnum]->cpu_signals);
+ }
+ if (int_latency > cpu_data_ptr[cnum]->cpu_max_observed_int_latency) {
+ cpu_data_ptr[cnum]->cpu_max_observed_int_latency = int_latency;
+ cpu_data_ptr[cnum]->cpu_max_observed_int_latency_vector = interrupt_num;
+ }
+ }
+
+ /*
+ * Having serviced the interrupt first, look at the interrupted stack depth.
+ */
+ if (!user_mode) {
+ uint64_t depth = cpu_data_ptr[cnum]->cpu_kernel_stack
+ + sizeof(struct x86_kernel_state)
+ + sizeof(struct i386_exception_link *)
+ - rsp;
+ if (depth > kernel_stack_depth_max) {
+ kernel_stack_depth_max = (vm_offset_t)depth;
+ KERNEL_DEBUG_CONSTANT(
+ MACHDBG_CODE(DBG_MACH_SCHED, MACH_STACK_DEPTH),
+ (long) depth, (long) rip, 0, 0, 0);
+ }
+ }
+}
static inline void
reset_dr7(void)
{
- uint32_t dr7 = 0x400; /* magic dr7 reset value */
- __asm__ volatile("movl %0,%%dr7" : : "r" (dr7));
+ long dr7 = 0x400; /* magic dr7 reset value; 32 bit on i386, 64 bit on x86_64 */
+ __asm__ volatile("mov %0,%%dr7" : : "r" (dr7));
}
#if MACH_KDP
unsigned kdp_has_active_watchpoints = 0;
+#define NO_WATCHPOINTS (!kdp_has_active_watchpoints)
+#else
+#define NO_WATCHPOINTS 1
#endif
/*
* Trap from kernel mode. Only page-fault errors are recoverable,
* and then only in special circumstances. All other errors are
* fatal. Return value indicates if trap was handled.
*/
+
void
kernel_trap(
- x86_saved_state_t *state)
+ x86_saved_state_t *state,
+ uintptr_t *lo_spp)
{
+#ifdef __i386__
x86_saved_state32_t *saved_state;
+#else
+ x86_saved_state64_t *saved_state;
+#endif
int code;
user_addr_t vaddr;
int type;
vm_prot_t prot;
struct recovery *rp;
vm_offset_t kern_ip;
+#if NCOPY_WINDOWS > 0
int fault_in_copy_window = -1;
+#endif
int is_user = 0;
-#if MACH_KDB
+#if MACH_KDB
pt_entry_t *pte;
#endif /* MACH_KDB */
-
+
thread = current_thread();
- if (is_saved_state64(state))
- panic("kernel_trap(%p) with 64-bit state", state);
+#ifdef __i386__
+ if (__improbable(is_saved_state64(state))) {
+ panic_64(state, 0, "Kernel trap with 64-bit state", FALSE);
+ }
+
saved_state = saved_state32(state);
+ /* Record cpu where state was captured (trampolines don't set this) */
+ saved_state->cpu = cpu_number();
+
vaddr = (user_addr_t)saved_state->cr2;
type = saved_state->trapno;
code = saved_state->err & 0xffff;
intr = (saved_state->efl & EFL_IF) != 0; /* state of ints at trap */
-
kern_ip = (vm_offset_t)saved_state->eip;
+#else
+ if (__improbable(is_saved_state32(state)))
+ panic("kernel_trap(%p) with 32-bit state", state);
+ saved_state = saved_state64(state);
+
+ /* Record cpu where state was captured */
+ saved_state->isf.cpu = cpu_number();
+
+ vaddr = (user_addr_t)saved_state->cr2;
+ type = saved_state->isf.trapno;
+ code = (int)(saved_state->isf.err & 0xffff);
+ intr = (saved_state->isf.rflags & EFL_IF) != 0; /* state of ints at trap */
+ kern_ip = (vm_offset_t)saved_state->isf.rip;
+#endif
myast = ast_pending();
- if (perfASTHook) {
+ perfASTCallback astfn = perfASTHook;
+ if (__improbable(astfn != NULL)) {
if (*myast & AST_CHUD_ALL)
- perfASTHook(type, NULL, 0, 0);
+ astfn(AST_CHUD_ALL, myast);
} else
*myast &= ~AST_CHUD_ALL;
/*
* Is there a hook?
*/
- if (perfTrapHook) {
- if (perfTrapHook(type, NULL, 0, 0) == KERN_SUCCESS) {
+ perfCallback fn = perfTrapHook;
+ if (__improbable(fn != NULL)) {
+ if (fn(type, NULL, 0, 0) == KERN_SUCCESS) {
/*
* If it succeeds, we are done...
*/
}
#if CONFIG_DTRACE
- if (tempDTraceTrapHook) {
- if (tempDTraceTrapHook(type, state, 0, 0) == KERN_SUCCESS) {
+ if (__improbable(tempDTraceTrapHook != NULL)) {
+ if (tempDTraceTrapHook(type, state, lo_spp, 0) == KERN_SUCCESS) {
/*
* If it succeeds, we are done...
*/
* on preemption below. but we do want to re-enable interrupts
* as soon we possibly can to hold latency down
*/
- if (T_PREEMPT == type) {
+ if (__improbable(T_PREEMPT == type)) {
ast_taken(AST_PREEMPTION, FALSE);
KERNEL_DEBUG_CONSTANT((MACHDBG_CODE(DBG_MACH_EXCP_KTRAP_x86, type)) | DBG_FUNC_NONE,
*/
map = kernel_map;
- if (thread != THREAD_NULL && thread->map != kernel_map) {
- vm_offset_t copy_window_base;
+ if (__probable(thread != THREAD_NULL && thread->map != kernel_map)) {
+#if NCOPY_WINDOWS > 0
+ vm_offset_t copy_window_base;
vm_offset_t kvaddr;
int window_index;
kvaddr = (vm_offset_t)vaddr;
- /*
+ /*
* must determine if fault occurred in
* the copy window while pre-emption is
* disabled for this processor so that
* we only need to look at the window
* associated with this processor
*/
- copy_window_base = current_cpu_datap()->cpu_copywindow_base;
+ copy_window_base = current_cpu_datap()->cpu_copywindow_base;
if (kvaddr >= copy_window_base && kvaddr < (copy_window_base + (NBPDE * NCOPY_WINDOWS)) ) {
- window_index = (kvaddr - copy_window_base) / NBPDE;
+ window_index = (int)((kvaddr - copy_window_base) / NBPDE);
if (thread->machine.copy_window[window_index].user_base != (user_addr_t)-1) {
}
is_user = -1;
}
+#else
+ if (vaddr < VM_MAX_USER_PAGE_ADDRESS) {
+ /* fault occurred in userspace */
+ map = thread->map;
+ is_user = -1;
+ /*
+ * If we're not sharing cr3 with the user
+ * and we faulted in copyio,
+ * then switch cr3 here and dismiss the fault.
+ */
+ if (no_shared_cr3 &&
+ (thread->machine.specFlags&CopyIOActive) &&
+ map->pmap->pm_cr3 != get_cr3_base()) {
+ pmap_assert(current_cpu_datap()->cpu_pmap_pcid_enabled == FALSE);
+ set_cr3_raw(map->pmap->pm_cr3);
+ return;
+ }
+ }
+#endif
}
}
- KERNEL_DEBUG_CONSTANT((MACHDBG_CODE(DBG_MACH_EXCP_KTRAP_x86, type)) | DBG_FUNC_NONE,
- (int)(vaddr >> 32), (int)vaddr, is_user, kern_ip, 0);
+ KERNEL_DEBUG_CONSTANT(
+ (MACHDBG_CODE(DBG_MACH_EXCP_KTRAP_x86, type)) | DBG_FUNC_NONE,
+ (unsigned)(vaddr >> 32), (unsigned)vaddr, is_user, kern_ip, 0);
(void) ml_set_interrupts_enabled(intr);
fpSSEexterrflt();
return;
case T_DEBUG:
-#if MACH_KDP
- if ((saved_state->efl & EFL_TF) == 0
- && !kdp_has_active_watchpoints)
+#ifdef __i386__
+ if ((saved_state->efl & EFL_TF) == 0 && NO_WATCHPOINTS)
#else
- if ((saved_state->efl & EFL_TF) == 0)
+ if ((saved_state->isf.rflags & EFL_TF) == 0 && NO_WATCHPOINTS)
#endif
{
/* We've somehow encountered a debug
return;
}
goto debugger_entry;
+#ifdef __x86_64__
+ case T_INT3:
+ goto debugger_entry;
+#endif
case T_PAGE_FAULT:
/*
* If the current map is a submap of the kernel map,
#endif /* MACH_KDB */
#if CONFIG_DTRACE
- if (thread->options & TH_OPT_DTRACE) { /* Executing under dtrace_probe? */
+ if (thread != THREAD_NULL && thread->options & TH_OPT_DTRACE) { /* Executing under dtrace_probe? */
if (dtrace_tally_fault(vaddr)) { /* Should a fault under dtrace be ignored? */
/*
* DTrace has "anticipated" the possibility of this fault, and has
#endif /* MACH_KDB */
if (result == KERN_SUCCESS) {
-
+#if NCOPY_WINDOWS > 0
if (fault_in_copy_window != -1) {
- pt_entry_t *updp;
- pt_entry_t *kpdp;
-
- /*
- * in case there was no page table assigned
- * for the user base address and the pmap
- * got 'expanded' due to this fault, we'll
- * copy in the descriptor
- *
- * we're either setting the page table descriptor
- * to the same value or it was 0... no need
- * for a TLB flush in either case
- */
-
- ml_set_interrupts_enabled(FALSE);
- updp = pmap_pde(map->pmap, thread->machine.copy_window[fault_in_copy_window].user_base);
- assert(updp);
- if (0 == updp) panic("trap: updp 0"); /* XXX DEBUG */
- kpdp = current_cpu_datap()->cpu_copywindow_pdp;
- kpdp += fault_in_copy_window;
-
-#if JOE_DEBUG
- if (*kpdp && (*kpdp & PG_FRAME) != (*updp & PG_FRAME))
- panic("kernel_fault: user pdp doesn't match - updp = 0x%x, kpdp = 0x%x\n", updp, kpdp);
-#endif
- pmap_store_pte(kpdp, *updp);
-
+ ml_set_interrupts_enabled(FALSE);
+ copy_window_fault(thread, map,
+ fault_in_copy_window);
(void) ml_set_interrupts_enabled(intr);
}
+#endif /* NCOPY_WINDOWS > 0 */
return;
}
/*
/*
* Check thread recovery address also.
*/
- if (thread->recover) {
- set_recovery_ip(saved_state, thread->recover);
+ if (thread != THREAD_NULL && thread->recover) {
+ set_recovery_ip(saved_state, thread->recover);
thread->recover = 0;
return;
}
*
* fall through...
*/
-
default:
/*
* Exception 15 is reserved but some chips may generate it
kprintf("kernel_trap() ignoring spurious trap 15\n");
return;
}
+#if defined(__x86_64__) && DEBUG
+ kprint_state(saved_state);
+#endif
debugger_entry:
/* Ensure that the i386_kernel_state at the base of the
* current thread's stack (if any) is synchronized with the
* context at the moment of the trap, to facilitate
* access through the debugger.
*/
- sync_iss_to_iks(saved_state);
+ sync_iss_to_iks(state);
#if MACH_KDB
restart_debugger:
#endif /* MACH_KDB */
#if MACH_KDP
if (current_debugger != KDB_CUR_DB) {
- if (kdp_i386_trap(type, saved_state, result, vaddr))
+ if (kdp_i386_trap(type, saved_state, result, (vm_offset_t)vaddr))
return;
} else {
#endif /* MACH_KDP */
}
#endif
}
-
+ __asm__ volatile("cli":::"cc");
panic_trap(saved_state);
/*
* NO RETURN
}
+#ifdef __i386__
static void
set_recovery_ip(x86_saved_state32_t *saved_state, vm_offset_t ip)
{
saved_state->eip = ip;
}
+#else
+static void
+set_recovery_ip(x86_saved_state64_t *saved_state, vm_offset_t ip)
+{
+ saved_state->isf.rip = ip;
+}
+#endif
+#ifdef __i386__
static void
panic_trap(x86_saved_state32_t *regs)
{
const char *trapname = "Unknown";
- uint32_t cr0 = get_cr0();
- uint32_t cr2 = get_cr2();
- uint32_t cr3 = get_cr3();
- uint32_t cr4 = get_cr4();
+ pal_cr_t cr0, cr2, cr3, cr4;
+
+ pal_get_control_registers( &cr0, &cr2, &cr3, &cr4 );
/*
* Issue an I/O port read if one has been requested - this is an
regs->eip, regs->trapno, trapname, cr0, cr2, cr3, cr4,
regs->eax,regs->ebx,regs->ecx,regs->edx,
regs->cr2,regs->ebp,regs->esi,regs->edi,
- regs->efl,regs->eip,regs->cs, regs->ds, regs->err);
+ regs->efl,regs->eip,regs->cs & 0xFFFF, regs->ds & 0xFFFF, regs->err);
/*
* This next statement is not executed,
* but it's needed to stop the compiler using tail call optimization
*/
cr0 = 0;
}
-
-extern void kprintf_break_lock(void);
-
-
-/*
- * Called from locore on a special reserved stack after a double-fault
- * is taken in kernel space.
- * Kernel stack overflow is one route here.
- */
-void
-panic_double_fault(
-#if CONFIG_NO_PANIC_STRINGS
- __unused int code
-#else
- int code
-#endif
- )
-{
-#if MACH_KDP || !CONFIG_NO_PANIC_STRINGS
- struct i386_tss *my_ktss = current_ktss();
-#endif
-
- /* Set postcode (DEBUG only) */
- postcode(PANIC_DOUBLE_FAULT);
-
- /*
- * Issue an I/O port read if one has been requested - this is an
- * event logic analyzers can use as a trigger point.
- */
- panic_io_port_read();
-
- /*
- * Break kprintf lock in case of recursion,
- * and record originally faulted instruction address.
- */
- kprintf_break_lock();
-
-#if MACH_KDP
- /*
- * Print backtrace leading to first fault:
- */
- panic_i386_backtrace((void *) my_ktss->ebp, 10, NULL, FALSE, NULL);
-#endif
-
- panic("Double fault at 0x%08x, thread:%p, code:0x%x, "
- "registers:\n"
- "CR0: 0x%08x, CR2: 0x%08x, CR3: 0x%08x, CR4: 0x%08x\n"
- "EAX: 0x%08x, EBX: 0x%08x, ECX: 0x%08x, EDX: 0x%08x\n"
- "ESP: 0x%08x, EBP: 0x%08x, ESI: 0x%08x, EDI: 0x%08x\n"
- "EFL: 0x%08x, EIP: 0x%08x\n",
- my_ktss->eip, current_thread(), code,
- get_cr0(), get_cr2(), get_cr3(), get_cr4(),
- my_ktss->eax, my_ktss->ebx, my_ktss->ecx, my_ktss->edx,
- my_ktss->esp, my_ktss->ebp, my_ktss->esi, my_ktss->edi,
- my_ktss->eflags, my_ktss->eip);
-}
-
-
-/*
- * Called from locore on a special reserved stack after a machine-check
- */
-void
-panic_machine_check(
-#if CONFIG_NO_PANIC_STRINGS
- __unused int code
#else
- int code
-#endif
- )
-{
-#if !CONFIG_NO_PANIC_STRINGS
- struct i386_tss *my_ktss = current_ktss();
-#endif
-
- /* Set postcode (DEBUG only) */
- postcode(PANIC_MACHINE_CHECK);
-
- /*
- * Issue an I/O port read if one has been requested - this is an
- * event logic analyzers can use as a trigger point.
- */
- panic_io_port_read();
-
- /*
- * Break kprintf lock in case of recursion,
- * and record originally faulted instruction address.
- */
- kprintf_break_lock();
-
- /*
- * Dump the contents of the machine check MSRs (if any).
- */
- mca_dump();
-
- /*
- * And that's all folks, we don't attempt recovery...
- */
- panic("Machine-check at 0x%08x, thread:%p, code:0x%x, "
- "registers:\n"
- "CR0: 0x%08x, CR2: 0x%08x, CR3: 0x%08x, CR4: 0x%08x\n"
- "EAX: 0x%08x, EBX: 0x%08x, ECX: 0x%08x, EDX: 0x%08x\n"
- "ESP: 0x%08x, EBP: 0x%08x, ESI: 0x%08x, EDI: 0x%08x\n"
- "EFL: 0x%08x, EIP: 0x%08x\n",
- my_ktss->eip, current_thread(), code,
- get_cr0(), get_cr2(), get_cr3(), get_cr4(),
- my_ktss->eax, my_ktss->ebx, my_ktss->ecx, my_ktss->edx,
- my_ktss->esp, my_ktss->ebp, my_ktss->esi, my_ktss->edi,
- my_ktss->eflags, my_ktss->eip);
-}
-
-void
-panic_double_fault64(x86_saved_state_t *esp)
+static void
+panic_trap(x86_saved_state64_t *regs)
{
- /* Set postcode (DEBUG only) */
- postcode(PANIC_DOUBLE_FAULT);
+ const char *trapname = "Unknown";
+ pal_cr_t cr0, cr2, cr3, cr4;
+ pal_get_control_registers( &cr0, &cr2, &cr3, &cr4 );
+ assert(ml_get_interrupts_enabled() == FALSE);
+ current_cpu_datap()->cpu_fatal_trap_state = regs;
/*
* Issue an I/O port read if one has been requested - this is an
* event logic analyzers can use as a trigger point.
*/
panic_io_port_read();
- /*
- * Break kprintf lock in case of recursion,
- * and record originally faulted instruction address.
- */
- kprintf_break_lock();
+ kprintf("panic trap number 0x%x, rip 0x%016llx\n",
+ regs->isf.trapno, regs->isf.rip);
+ kprintf("cr0 0x%016llx cr2 0x%016llx cr3 0x%016llx cr4 0x%016llx\n",
+ cr0, cr2, cr3, cr4);
+ if (regs->isf.trapno < TRAP_TYPES)
+ trapname = trap_type[regs->isf.trapno];
+#undef panic
+ panic("Kernel trap at 0x%016llx, type %d=%s, registers:\n"
+ "CR0: 0x%016llx, CR2: 0x%016llx, CR3: 0x%016llx, CR4: 0x%016llx\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"
+ "CR2: 0x%016llx, Error code: 0x%016llx, Faulting CPU: 0x%x\n",
+ regs->isf.rip, regs->isf.trapno, trapname,
+ cr0, cr2, cr3, 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->cr2, regs->isf.err, regs->isf.cpu);
/*
- * Dump the interrupt stack frame at last kernel entry.
+ * This next statement is not executed,
+ * but it's needed to stop the compiler using tail call optimization
+ * for the panic call - which confuses the subsequent backtrace.
*/
- if (is_saved_state64(esp)) {
-#if !CONFIG_NO_PANIC_STRINGS
- x86_saved_state64_t *ss64p = saved_state64(esp);
-#endif
- panic("Double fault thread:%p, trapno:0x%x, err:0x%qx, "
- "registers:\n"
- "CR0: 0x%08x, CR2: 0x%08x, CR3: 0x%08x, CR4: 0x%08x\n"
- "RAX: 0x%016qx, RBX: 0x%016qx, RCX: 0x%016qx, RDX: 0x%016qx\n"
- "RSP: 0x%016qx, RBP: 0x%016qx, RSI: 0x%016qx, RDI: 0x%016qx\n"
- "R8: 0x%016qx, R9: 0x%016qx, R10: 0x%016qx, R11: 0x%016qx\n"
- "R12: 0x%016qx, R13: 0x%016qx, R14: 0x%016qx, R15: 0x%016qx\n"
- "RFL: 0x%016qx, RIP: 0x%016qx, CR2: 0x%016qx\n",
- current_thread(), ss64p->isf.trapno, ss64p->isf.err,
- get_cr0(), get_cr2(), get_cr3(), get_cr4(),
- ss64p->rax, ss64p->rbx, ss64p->rcx, ss64p->rdx,
- ss64p->isf.rsp, ss64p->rbp, ss64p->rsi, ss64p->rdi,
- ss64p->r8, ss64p->r9, ss64p->r10, ss64p->r11,
- ss64p->r12, ss64p->r13, ss64p->r14, ss64p->r15,
- ss64p->isf.rflags, ss64p->isf.rip, ss64p->cr2);
- } else {
-#if !CONFIG_NO_PANIC_STRINGS
- x86_saved_state32_t *ss32p = saved_state32(esp);
-#endif
- panic("Double fault at 0x%08x, thread:%p, trapno:0x%x, err:0x%x),"
- "registers:\n"
- "CR0: 0x%08x, CR2: 0x%08x, CR3: 0x%08x, CR4: 0x%08x\n"
- "EAX: 0x%08x, EBX: 0x%08x, ECX: 0x%08x, EDX: 0x%08x\n"
- "ESP: 0x%08x, EBP: 0x%08x, ESI: 0x%08x, EDI: 0x%08x\n"
- "EFL: 0x%08x, EIP: 0x%08x\n",
- ss32p->eip, current_thread(), ss32p->trapno, ss32p->err,
- get_cr0(), get_cr2(), get_cr3(), get_cr4(),
- ss32p->eax, ss32p->ebx, ss32p->ecx, ss32p->edx,
- ss32p->uesp, ss32p->ebp, ss32p->esi, ss32p->edi,
- ss32p->efl, ss32p->eip);
- }
+ cr0 = 0;
}
-
-/*
- * Machine check handler for 64-bit.
- */
-void
-panic_machine_check64(x86_saved_state_t *esp)
-{
- /* Set postcode (DEBUG only) */
- postcode(PANIC_MACHINE_CHECK);
-
- /*
- * Issue an I/O port read if one has been requested - this is an
- * event logic analyzers can use as a trigger point.
- */
- panic_io_port_read();
-
- /*
- * Break kprintf lock in case of recursion,
- * and record originally faulted instruction address.
- */
- kprintf_break_lock();
-
- /*
- * Dump the contents of the machine check MSRs (if any).
- */
- mca_dump();
-
- /*
- * And that's all folks, we don't attempt recovery...
- */
- if (is_saved_state64(esp)) {
-#if !CONFIG_NO_PANIC_STRINGS
- x86_saved_state64_t *ss64p = saved_state64(esp);
-#endif
- panic("Machine Check thread:%p, trapno:0x%x, err:0x%qx, "
- "registers:\n"
- "CR0: 0x%08x, CR2: 0x%08x, CR3: 0x%08x, CR4: 0x%08x\n"
- "RAX: 0x%016qx, RBX: 0x%016qx, RCX: 0x%016qx, RDX: 0x%016qx\n"
- "RSP: 0x%016qx, RBP: 0x%016qx, RSI: 0x%016qx, RDI: 0x%016qx\n"
- "R8: 0x%016qx, R9: 0x%016qx, R10: 0x%016qx, R11: 0x%016qx\n"
- "R12: 0x%016qx, R13: 0x%016qx, R14: 0x%016qx, R15: 0x%016qx\n"
- "RFL: 0x%016qx, RIP: 0x%016qx\n",
- current_thread(), ss64p->isf.trapno, ss64p->isf.err,
- get_cr0(), get_cr2(), get_cr3(), get_cr4(),
- ss64p->rax, ss64p->rbx, ss64p->rcx, ss64p->rdx,
- ss64p->isf.rsp, ss64p->rbp, ss64p->rsi, ss64p->rdi,
- ss64p->r8, ss64p->r9, ss64p->r10, ss64p->r11,
- ss64p->r12, ss64p->r13, ss64p->r14, ss64p->r15,
- ss64p->isf.rflags, ss64p->isf.rip);
- } else {
-#if !CONFIG_NO_PANIC_STRINGS
- x86_saved_state32_t *ss32p = saved_state32(esp);
#endif
- panic("Machine Check at 0x%08x, thread:%p, trapno:0x%x, err:0x%x, "
- "registers:\n"
- "CR0: 0x%08x, CR2: 0x%08x, CR3: 0x%08x, CR4: 0x%08x\n"
- "EAX: 0x%08x, EBX: 0x%08x, ECX: 0x%08x, EDX: 0x%08x\n"
- "ESP: 0x%08x, EBP: 0x%08x, ESI: 0x%08x, EDI: 0x%08x\n"
- "EFL: 0x%08x, EIP: 0x%08x\n",
- ss32p->eip, current_thread(), ss32p->trapno, ss32p->err,
- get_cr0(), get_cr2(), get_cr3(), get_cr4(),
- ss32p->eax, ss32p->ebx, ss32p->ecx, ss32p->edx,
- ss32p->uesp, ss32p->ebp, ss32p->esi, ss32p->edi,
- ss32p->efl, ss32p->eip);
- }
-}
#if CONFIG_DTRACE
extern kern_return_t dtrace_user_probe(x86_saved_state_t *);
ast_t *myast;
kern_return_t kret;
user_addr_t rip;
+ unsigned long dr6 = 0; /* 32 bit for i386, 64 bit for x86_64 */
assert((is_saved_state32(saved_state) && !thread_is_64bit(thread)) ||
(is_saved_state64(saved_state) && thread_is_64bit(thread)));
regs = saved_state64(saved_state);
+ /* Record cpu where state was captured */
+ regs->isf.cpu = cpu_number();
+
type = regs->isf.trapno;
- err = regs->isf.err & 0xffff;
+ err = (int)regs->isf.err & 0xffff;
vaddr = (user_addr_t)regs->cr2;
rip = (user_addr_t)regs->isf.rip;
} else {
regs = saved_state32(saved_state);
+ /* Record cpu where state was captured */
+ regs->cpu = cpu_number();
+
type = regs->trapno;
err = regs->err & 0xffff;
vaddr = (user_addr_t)regs->cr2;
rip = (user_addr_t)regs->eip;
}
- KERNEL_DEBUG_CONSTANT((MACHDBG_CODE(DBG_MACH_EXCP_UTRAP_x86, type)) | DBG_FUNC_NONE,
- (int)(vaddr>>32), (int)vaddr, (int)(rip>>32), (int)rip, 0);
+ if ((type == T_DEBUG) && thread->machine.ids) {
+ unsigned long clear = 0;
+ /* Stash and clear this processor's DR6 value, in the event
+ * this was a debug register match
+ */
+ __asm__ volatile ("mov %%db6, %0" : "=r" (dr6));
+ __asm__ volatile ("mov %0, %%db6" : : "r" (clear));
+ }
+
+ pal_sti();
+
+ KERNEL_DEBUG_CONSTANT(
+ (MACHDBG_CODE(DBG_MACH_EXCP_UTRAP_x86, type)) | DBG_FUNC_NONE,
+ (unsigned)(vaddr>>32), (unsigned)vaddr,
+ (unsigned)(rip>>32), (unsigned)rip, 0);
code = 0;
subcode = 0;
kprintf("user_trap(0x%08x) type=%d vaddr=0x%016llx\n",
saved_state, type, vaddr);
#endif
- myast = ast_pending();
- if (perfASTHook) {
+
+ perfASTCallback astfn = perfASTHook;
+ if (__improbable(astfn != NULL)) {
+ myast = ast_pending();
if (*myast & AST_CHUD_ALL) {
- perfASTHook(type, saved_state, 0, 0);
+ astfn(AST_CHUD_ALL, myast);
}
- } else {
- *myast &= ~AST_CHUD_ALL;
}
/* Is there a hook? */
- if (perfTrapHook) {
- if (perfTrapHook(type, saved_state, 0, 0) == KERN_SUCCESS)
+ perfCallback fn = perfTrapHook;
+ if (__improbable(fn != NULL)) {
+ if (fn(type, saved_state, 0, 0) == KERN_SUCCESS)
return; /* If it succeeds, we are done... */
}
* Avoid needlessly calling tempDTraceTrapHook here, and let the
* INT_3 case handle them.
*/
-
+ DEBUG_KPRINT_SYSCALL_MASK(1,
+ "user_trap: type=0x%x(%s) err=0x%x cr2=%p rip=%p\n",
+ type, trap_type[type], err, (void *)(long) vaddr, (void *)(long) rip);
+
switch (type) {
case T_DIVIDE_ERROR:
case T_DEBUG:
{
pcb_t pcb;
- unsigned int clear = 0;
/*
- * get dr6 and set it in the thread's pcb before
- * returning to userland
+ * Update the PCB with this processor's DR6 value
+ * in the event this was a debug register match.
*/
- pcb = thread->machine.pcb;
+ pcb = THREAD_TO_PCB(thread);
if (pcb->ids) {
/*
* We can get and set the status register
* used on x86_64
*/
if (thread_is_64bit(thread)) {
- uint32_t dr6;
x86_debug_state64_t *ids = pcb->ids;
- dr6 = (uint32_t)ids->dr6;
- __asm__ volatile ("movl %%db6, %0" : "=r" (dr6));
ids->dr6 = dr6;
} else { /* 32 bit thread */
x86_debug_state32_t *ids = pcb->ids;
- __asm__ volatile ("movl %%db6, %0" : "=r" (ids->dr6));
+ ids->dr6 = (uint32_t) dr6;
}
- __asm__ volatile ("movl %0, %%db6" : : "r" (clear));
}
exc = EXC_BREAKPOINT;
code = EXC_I386_SGL;
if (err & T_PF_WRITE)
prot |= VM_PROT_WRITE;
#if PAE
- if (err & T_PF_EXECUTE)
+ if (__improbable(err & T_PF_EXECUTE))
prot |= VM_PROT_EXECUTE;
#endif
kret = vm_fault(thread->map, vm_map_trunc_page(vaddr),
/*
* Handle AST traps for i386.
- * Check for delayed floating-point exception from
- * AT-bus machines.
*/
extern void log_thread_action (thread_t, char *);
{
mach_exception_data_type_t codes[EXCEPTION_CODE_MAX];
+ DEBUG_KPRINT_SYSCALL_MACH("i386_exception: exc=%d code=0x%llx subcode=0x%llx\n",
+ exc, code, subcode);
codes[0] = code; /* new exception interface */
codes[1] = subcode;
exception_triage(exc, codes, 2);
}
-void
-kernel_preempt_check(void)
-{
- ast_t *myast;
- boolean_t intr;
-
- /*
- * disable interrupts to both prevent pre-emption
- * and to keep the ast state from changing via
- * an interrupt handler making something runnable
- */
- intr = ml_set_interrupts_enabled(FALSE);
-
- myast = ast_pending();
-
- if ((*myast & AST_URGENT) && intr == TRUE && get_interrupt_level() == 0) {
- /*
- * can handle interrupts and preemptions
- * at this point
- */
- ml_set_interrupts_enabled(intr);
-
- /*
- * now cause the PRE-EMPTION trap
- */
- __asm__ volatile (" int $0xff");
- } else {
- /*
- * if interrupts were already disabled or
- * we're in an interrupt context, we can't
- * preempt... of course if AST_URGENT
- * isn't set we also don't want to
- */
- ml_set_interrupts_enabled(intr);
- }
-}
-
#if MACH_KDB
extern void db_i386_state(x86_saved_state32_t *regs);
*/
void
-sync_iss_to_iks(x86_saved_state32_t *saved_state)
+sync_iss_to_iks(x86_saved_state_t *saved_state)
{
- struct x86_kernel_state32 *iks;
+ struct x86_kernel_state *iks;
vm_offset_t kstack;
boolean_t record_active_regs = FALSE;
- if ((kstack = current_thread()->kernel_stack) != 0) {
- x86_saved_state32_t *regs;
+ /* The PAL may have a special way to sync registers */
+ if( saved_state->flavor == THREAD_STATE_NONE )
+ pal_get_kern_regs( saved_state );
- regs = saved_state;
+ if ((kstack = current_thread()->kernel_stack) != 0) {
+#ifdef __i386__
+ x86_saved_state32_t *regs = saved_state32(saved_state);
+#else
+ x86_saved_state64_t *regs = saved_state64(saved_state);
+#endif
iks = STACK_IKS(kstack);
- /*
- * Did we take the trap/interrupt in kernel mode?
- */
+ /* Did we take the trap/interrupt in kernel mode? */
+#ifdef __i386__
if (regs == USER_REGS32(current_thread()))
record_active_regs = TRUE;
else {
iks->k_esi = regs->esi;
iks->k_eip = regs->eip;
}
+#else
+ if (regs == USER_REGS64(current_thread()))
+ record_active_regs = TRUE;
+ else {
+ iks->k_rbx = regs->rbx;
+ iks->k_rsp = regs->isf.rsp;
+ iks->k_rbp = regs->rbp;
+ iks->k_r12 = regs->r12;
+ iks->k_r13 = regs->r13;
+ iks->k_r14 = regs->r14;
+ iks->k_r15 = regs->r15;
+ iks->k_rip = regs->isf.rip;
+ }
+#endif
}
if (record_active_regs == TRUE) {
- /*
- * Show the trap handler path
- */
+#ifdef __i386__
+ /* Show the trap handler path */
__asm__ volatile("movl %%ebx, %0" : "=m" (iks->k_ebx));
__asm__ volatile("movl %%esp, %0" : "=m" (iks->k_esp));
__asm__ volatile("movl %%ebp, %0" : "=m" (iks->k_ebp));
__asm__ volatile("movl %%edi, %0" : "=m" (iks->k_edi));
__asm__ volatile("movl %%esi, %0" : "=m" (iks->k_esi));
- /*
- * "Current" instruction pointer
- */
+ /* "Current" instruction pointer */
__asm__ volatile("movl $1f, %0\n1:" : "=m" (iks->k_eip));
+#else
+ /* Show the trap handler path */
+ __asm__ volatile("movq %%rbx, %0" : "=m" (iks->k_rbx));
+ __asm__ volatile("movq %%rsp, %0" : "=m" (iks->k_rsp));
+ __asm__ volatile("movq %%rbp, %0" : "=m" (iks->k_rbp));
+ __asm__ volatile("movq %%r12, %0" : "=m" (iks->k_r12));
+ __asm__ volatile("movq %%r13, %0" : "=m" (iks->k_r13));
+ __asm__ volatile("movq %%r14, %0" : "=m" (iks->k_r14));
+ __asm__ volatile("movq %%r15, %0" : "=m" (iks->k_r15));
+ /* "Current" instruction pointer */
+ __asm__ volatile("leaq 1f(%%rip), %%rax; mov %%rax, %0\n1:"
+ : "=m" (iks->k_rip)
+ :
+ : "rax");
+#endif
}
}
*/
void
sync_iss_to_iks_unconditionally(__unused x86_saved_state_t *saved_state) {
- struct x86_kernel_state32 *iks;
+ struct x86_kernel_state *iks;
vm_offset_t kstack;
if ((kstack = current_thread()->kernel_stack) != 0) {
iks = STACK_IKS(kstack);
- /*
- * Display the trap handler path.
- */
+#ifdef __i386__
+ /* Display the trap handler path */
__asm__ volatile("movl %%ebx, %0" : "=m" (iks->k_ebx));
__asm__ volatile("movl %%esp, %0" : "=m" (iks->k_esp));
__asm__ volatile("movl %%ebp, %0" : "=m" (iks->k_ebp));
__asm__ volatile("movl %%edi, %0" : "=m" (iks->k_edi));
__asm__ volatile("movl %%esi, %0" : "=m" (iks->k_esi));
- /*
- * "Current" instruction pointer.
- */
+ /* "Current" instruction pointer */
__asm__ volatile("movl $1f, %0\n1:" : "=m" (iks->k_eip));
+#else
+ /* Display the trap handler path */
+ __asm__ volatile("movq %%rbx, %0" : "=m" (iks->k_rbx));
+ __asm__ volatile("movq %%rsp, %0" : "=m" (iks->k_rsp));
+ __asm__ volatile("movq %%rbp, %0" : "=m" (iks->k_rbp));
+ __asm__ volatile("movq %%r12, %0" : "=m" (iks->k_r12));
+ __asm__ volatile("movq %%r13, %0" : "=m" (iks->k_r13));
+ __asm__ volatile("movq %%r14, %0" : "=m" (iks->k_r14));
+ __asm__ volatile("movq %%r15, %0" : "=m" (iks->k_r15));
+ /* "Current" instruction pointer */
+ __asm__ volatile("leaq 1f(%%rip), %%rax; mov %%rax, %0\n1:" : "=m" (iks->k_rip)::"rax");
+#endif
}
}
projects / apple / xnu.git / blobdiff