* Hardware trap/fault handler.
*/
-#include <mach_kdb.h>
-#include <mach_kgdb.h>
#include <mach_kdp.h>
#include <mach_ldebug.h>
#include <sys/kdebug.h>
-#if MACH_KGDB
-#include <kgdb/kgdb_defs.h>
-#endif /* MACH_KGDB */
-
-#if MACH_KDB
-#include <debug.h>
-#include <ddb/db_watch.h>
-#include <ddb/db_run.h>
-#include <ddb/db_break.h>
-#include <ddb/db_trap.h>
-#endif /* MACH_KDB */
-
#include <string.h>
#include <i386/postcode.h>
#include <mach/i386/syscall_sw.h>
#include <libkern/OSDebug.h>
-
+#include <i386/cpu_threads.h>
#include <machine/pal_routines.h>
extern void throttle_lowpri_io(int);
== (SYSCALL_CLASS_MACH << SYSCALL_CLASS_SHIFT);
if (kdebug_enable && is_mach) {
/* Mach trap */
- KERNEL_DEBUG_CONSTANT(
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
MACHDBG_CODE(DBG_MACH_EXCP_SC,code)|DBG_FUNC_END,
ret, 0, 0, 0, 0);
}
is_mach = (code < 0);
if (kdebug_enable && is_mach) {
/* Mach trap */
- KERNEL_DEBUG_CONSTANT(
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
MACHDBG_CODE(DBG_MACH_EXCP_SC,-code)|DBG_FUNC_END,
ret, 0, 0, 0, 0);
}
}
-#if MACH_KDB
-boolean_t debug_all_traps_with_kdb = FALSE;
-extern struct db_watchpoint *db_watchpoint_list;
-extern boolean_t db_watchpoints_inserted;
-extern boolean_t db_breakpoints_inserted;
-
-void
-thread_kdb_return(void)
-{
- 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;
-
- regs = saved_state64(iss);
-
- if (kdb_trap(regs->isf.trapno, (int)regs->isf.err, (void *)regs)) {
- thread_exception_return();
- /*NOTREACHED*/
- }
-
- } else {
- x86_saved_state32_t *regs;
-
- regs = saved_state32(iss);
-
- if (kdb_trap(regs->trapno, regs->err, (void *)regs)) {
- thread_exception_return();
- /*NOTREACHED*/
- }
- }
-}
-
-#endif /* MACH_KDB */
-
static inline void
user_page_fault_continue(
kern_return_t kr)
thread_t thread = current_thread();
user_addr_t vaddr;
-#if MACH_KDB
- x86_saved_state_t *regs = USER_STATE(thread);
- int err;
- int trapno;
-
- assert((is_saved_state32(regs) && !thread_is_64bit(thread)) ||
- (is_saved_state64(regs) && thread_is_64bit(thread)));
-#endif
-
- if (thread_is_64bit(thread)) {
- x86_saved_state64_t *uregs;
+ if (thread_is_64bit(thread)) {
+ x86_saved_state64_t *uregs;
uregs = USER_REGS64(thread);
-#if MACH_KDB
- trapno = uregs->isf.trapno;
- err = (int)uregs->isf.err;
-#endif
vaddr = (user_addr_t)uregs->cr2;
} else {
x86_saved_state32_t *uregs;
uregs = USER_REGS32(thread);
-#if MACH_KDB
- trapno = uregs->trapno;
- err = uregs->err;
-#endif
vaddr = uregs->cr2;
}
- if (__probable((kr == KERN_SUCCESS) || (kr == KERN_ABORTED))) {
-#if MACH_KDB
- if (!db_breakpoints_inserted) {
- db_set_breakpoints();
- }
- if (db_watchpoint_list &&
- db_watchpoints_inserted &&
- (err & T_PF_WRITE) &&
- db_find_watchpoint(thread->map,
- (vm_offset_t)vaddr,
- saved_state32(regs)))
- kdb_trap(T_WATCHPOINT, 0, saved_state32(regs));
-#endif /* MACH_KDB */
- thread_exception_return();
- /*NOTREACHED*/
- }
-
-#if MACH_KDB
- if (debug_all_traps_with_kdb &&
- kdb_trap(trapno, err, saved_state32(regs))) {
- thread_exception_return();
- /*NOTREACHED*/
- }
-#endif /* MACH_KDB */
/* PAL debug hook */
pal_dbg_page_fault( thread, vaddr, kr );
boolean_t user_mode = FALSE;
int ipl;
int cnum = cpu_number();
+ int itype = 0;
if (is_saved_state64(state) == TRUE) {
x86_saved_state64_t *state64;
interrupt_num = state32->trapno;
}
- KERNEL_DEBUG_CONSTANT(
+ if (cpu_data_ptr[cnum]->lcpu.package->num_idle == topoParms.nLThreadsPerPackage)
+ cpu_data_ptr[cnum]->cpu_hwIntpexits[interrupt_num]++;
+
+ if (interrupt_num == (LAPIC_DEFAULT_INTERRUPT_BASE + LAPIC_INTERPROCESSOR_INTERRUPT))
+ itype = 1;
+ else if (interrupt_num == (LAPIC_DEFAULT_INTERRUPT_BASE + LAPIC_TIMER_INTERRUPT))
+ itype = 2;
+ else
+ itype = 3;
+
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_START,
- interrupt_num, rip, user_mode, 0, 0);
+ interrupt_num,
+ (user_mode ? rip : VM_KERNEL_UNSLIDE(rip)),
+ user_mode, itype, 0);
SCHED_STATS_INTERRUPT(current_processor());
ipl = get_preemption_level();
-
+
/*
* Handle local APIC interrupts
* else call platform expert for devices.
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(
+
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_END,
interrupt_num, 0, 0, 0, 0);
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);
+ (long) depth, (long) VM_KERNEL_UNSLIDE(rip), 0, 0, 0);
}
}
}
int fault_in_copy_window = -1;
#endif
int is_user = 0;
-#if MACH_KDB
- pt_entry_t *pte;
-#endif /* MACH_KDB */
thread = current_thread();
if (__improbable(T_PREEMPT == type)) {
ast_taken(AST_PREEMPTION, FALSE);
- KERNEL_DEBUG_CONSTANT((MACHDBG_CODE(DBG_MACH_EXCP_KTRAP_x86, type)) | DBG_FUNC_NONE,
- 0, 0, 0, kern_ip, 0);
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
+ (MACHDBG_CODE(DBG_MACH_EXCP_KTRAP_x86, type)) | DBG_FUNC_NONE,
+ 0, 0, 0, VM_KERNEL_UNSLIDE(kern_ip), 0);
return;
}
#endif
}
}
-
- KERNEL_DEBUG_CONSTANT(
+ user_addr_t kd_vaddr = is_user ? vaddr : VM_KERNEL_UNSLIDE(vaddr);
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
(MACHDBG_CODE(DBG_MACH_EXCP_KTRAP_x86, type)) | DBG_FUNC_NONE,
- (unsigned)(vaddr >> 32), (unsigned)vaddr, is_user, kern_ip, 0);
+ (unsigned)(kd_vaddr >> 32), (unsigned)kd_vaddr, is_user,
+ VM_KERNEL_UNSLIDE(kern_ip), 0);
(void) ml_set_interrupts_enabled(intr);
#endif
case T_PAGE_FAULT:
-#if MACH_KDB
- /*
- * Check for watchpoint on kernel static data.
- * vm_fault would fail in this case
- */
- if (map == kernel_map && db_watchpoint_list && db_watchpoints_inserted &&
- (code & T_PF_WRITE) && vaddr < vm_map_max(map) &&
- ((*(pte = pmap_pte(kernel_pmap, (vm_map_offset_t)vaddr))) & INTEL_PTE_WRITE) == 0) {
- pmap_store_pte(
- pte,
- *pte | INTEL_PTE_VALID | INTEL_PTE_WRITE);
- /* XXX need invltlb here? */
-
- result = KERN_SUCCESS;
- goto look_for_watchpoints;
- }
-#endif /* MACH_KDB */
-
#if CONFIG_DTRACE
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? */
}
}
#endif /* CONFIG_DTRACE */
-
prot = VM_PROT_READ;
FALSE,
THREAD_UNINT, NULL, 0);
-#if MACH_KDB
- if (result == KERN_SUCCESS) {
- /*
- * Look for watchpoints
- */
-look_for_watchpoints:
- if (map == kernel_map && db_watchpoint_list && db_watchpoints_inserted && (code & T_PF_WRITE) &&
- db_find_watchpoint(map, vaddr, saved_state))
- kdb_trap(T_WATCHPOINT, 0, saved_state);
- }
-#endif /* MACH_KDB */
-
if (result == KERN_SUCCESS) {
#if NCOPY_WINDOWS > 0
if (fault_in_copy_window != -1) {
* access through the debugger.
*/
sync_iss_to_iks(state);
-#if MACH_KDB
-restart_debugger:
-#endif /* MACH_KDB */
#if MACH_KDP
- if (current_debugger != KDB_CUR_DB) {
+ if (current_debugger != KDB_CUR_DB) {
if (kdp_i386_trap(type, saved_state, result, (vm_offset_t)vaddr))
return;
- } else {
-#endif /* MACH_KDP */
-#if MACH_KDB
- if (kdb_trap(type, code, saved_state)) {
- if (switch_debugger) {
- current_debugger = KDP_CUR_DB;
- switch_debugger = 0;
- goto restart_debugger;
- }
- return;
- }
-#endif /* MACH_KDB */
-#if MACH_KDP
}
#endif
}
- __asm__ volatile("cli":::"cc");
+ pal_cli();
panic_trap(saved_state);
/*
* NO RETURN
"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"
- "Error code: 0x%08x\n",
+ "Error code: 0x%08x%s\n",
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 & 0xFFFF, regs->ds & 0xFFFF, regs->err);
+ regs->efl,regs->eip,regs->cs & 0xFFFF, regs->ds & 0xFFFF, regs->err,
+ virtualized ? " VMM" : "");
/*
* This next statement is not executed,
* but it's needed to stop the compiler using tail call optimization
{
const char *trapname = "Unknown";
pal_cr_t cr0, cr2, cr3, cr4;
- boolean_t potential_smep_fault = FALSE;
+ boolean_t potential_smep_fault = FALSE, potential_kernel_NX_fault = FALSE;
pal_get_control_registers( &cr0, &cr2, &cr3, &cr4 );
assert(ml_get_interrupts_enabled() == FALSE);
if (regs->isf.trapno < TRAP_TYPES)
trapname = trap_type[regs->isf.trapno];
- if ((regs->isf.trapno == T_PAGE_FAULT) && (regs->isf.err == (T_PF_PROT | T_PF_EXECUTE)) && (pmap_smep_enabled) && (regs->isf.rip == regs->cr2) && (regs->isf.rip < VM_MAX_USER_PAGE_ADDRESS)) {
- potential_smep_fault = TRUE;
+ if ((regs->isf.trapno == T_PAGE_FAULT) && (regs->isf.err == (T_PF_PROT | T_PF_EXECUTE)) && (regs->isf.rip == regs->cr2)) {
+ if (pmap_smep_enabled && (regs->isf.rip < VM_MAX_USER_PAGE_ADDRESS)) {
+ potential_smep_fault = TRUE;
+ } else if (regs->isf.rip >= VM_MIN_KERNEL_AND_KEXT_ADDRESS) {
+ potential_kernel_NX_fault = TRUE;
+ }
}
#undef panic
"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%s\n",
+ "Fault CR2: 0x%016llx, Error code: 0x%016llx, Fault CPU: 0x%x%s%s%s\n",
regs->isf.rip, regs->isf.trapno, trapname,
cr0, cr2, cr3, cr4,
regs->rax, regs->rbx, regs->rcx, regs->rdx,
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,
- potential_smep_fault ? " SMEP/NX fault" : "");
+ virtualized ? " VMM" : "",
+ potential_kernel_NX_fault ? " Kernel NX fault" : "",
+ potential_smep_fault ? " SMEP/User NX fault" : "");
/*
* This next statement is not executed,
* but it's needed to stop the compiler using tail call optimization
pal_sti();
- KERNEL_DEBUG_CONSTANT(
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
(MACHDBG_CODE(DBG_MACH_EXCP_UTRAP_x86, type)) | DBG_FUNC_NONE,
(unsigned)(vaddr>>32), (unsigned)vaddr,
(unsigned)(rip>>32), (unsigned)rip, 0);
break;
case T_PAGE_FAULT:
+ {
prot = VM_PROT_READ;
if (err & T_PF_WRITE)
prot, FALSE,
THREAD_ABORTSAFE, NULL, 0);
- user_page_fault_continue(kret);
-
+ if (__probable((kret == KERN_SUCCESS) || (kret == KERN_ABORTED))) {
+ thread_exception_return();
/* NOTREACHED */
+ }
+
+ user_page_fault_continue(kret);
+ } /* NOTREACHED */
break;
case T_SSE_FLOAT_ERROR:
break;
default:
-#if MACH_KGDB
- Debugger("Unanticipated user trap");
- return;
-#endif /* MACH_KGDB */
-#if MACH_KDB
- if (kdb_trap(type, err, saved_state32(saved_state)))
- return;
-#endif /* MACH_KDB */
panic("Unexpected user trap, type %d", type);
return;
}
}
-#if MACH_KDB
-
-extern void db_i386_state(x86_saved_state32_t *regs);
-
-#include <ddb/db_output.h>
-
-void
-db_i386_state(
- x86_saved_state32_t *regs)
-{
- db_printf("eip %8x\n", regs->eip);
- db_printf("trap %8x\n", regs->trapno);
- db_printf("err %8x\n", regs->err);
- db_printf("efl %8x\n", regs->efl);
- db_printf("ebp %8x\n", regs->ebp);
- db_printf("esp %8x\n", regs->cr2);
- db_printf("uesp %8x\n", regs->uesp);
- db_printf("cs %8x\n", regs->cs & 0xff);
- db_printf("ds %8x\n", regs->ds & 0xff);
- db_printf("es %8x\n", regs->es & 0xff);
- db_printf("fs %8x\n", regs->fs & 0xff);
- db_printf("gs %8x\n", regs->gs & 0xff);
- db_printf("ss %8x\n", regs->ss & 0xff);
- db_printf("eax %8x\n", regs->eax);
- db_printf("ebx %8x\n", regs->ebx);
- db_printf("ecx %8x\n", regs->ecx);
- db_printf("edx %8x\n", regs->edx);
- db_printf("esi %8x\n", regs->esi);
- db_printf("edi %8x\n", regs->edi);
-}
-
-#endif /* MACH_KDB */
-
/* Synchronize a thread's i386_kernel_state (if any) with the given
* i386_saved_state_t obtained from the trap/IPI handler; called in
* kernel_trap() prior to entering the debugger, and when receiving
projects / apple / xnu.git / blobdiff