+ if (current_debugger != KDB_CUR_DB) {
+ if (kdp_i386_trap(type, saved_state, result, 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
+ }
+
+ panic_trap(saved_state);
+ /*
+ * NO RETURN
+ */
+}
+
+
+static void
+set_recovery_ip(x86_saved_state32_t *saved_state, vm_offset_t ip)
+{
+ saved_state->eip = ip;
+}
+
+
+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();
+
+ /*
+ * 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();
+
+ kprintf("panic trap number 0x%x, eip 0x%x\n", regs->trapno, regs->eip);
+ kprintf("cr0 0x%08x cr2 0x%08x cr3 0x%08x cr4 0x%08x\n",
+ cr0, cr2, cr3, cr4);
+
+ if (regs->trapno < TRAP_TYPES)
+ trapname = trap_type[regs->trapno];
+#undef panic
+ panic("Kernel trap at 0x%08x, type %d=%s, 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"
+ "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",
+ 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);
+ /*
+ * 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.
+ */
+ 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)
+{
+ /* 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();
+
+ /*
+ * Dump the interrupt stack frame at last kernel entry.
+ */
+ 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);
projects / apple / xnu.git / blobdiff