Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 656 insertions, 0 deletions

diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
new file mode 100644
index 00000000..77cdf423
--- /dev/null
+++ b/arch/s390/kernel/traps.c
@@ -0,0 +1,656 @@
+/*
+ *  arch/s390/kernel/traps.c
+ *
+ *  S390 version
+ *    Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
+ *               Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
+ *
+ *  Derived from "arch/i386/kernel/traps.c"
+ *    Copyright (C) 1991, 1992 Linus Torvalds
+ */
+
+/*
+ * 'Traps.c' handles hardware traps and faults after we have saved some
+ * state in 'asm.s'.
+ */
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/ptrace.h>
+#include <linux/timer.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/seq_file.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/kdebug.h>
+#include <linux/kallsyms.h>
+#include <linux/reboot.h>
+#include <linux/kprobes.h>
+#include <linux/bug.h>
+#include <linux/utsname.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <linux/atomic.h>
+#include <asm/mathemu.h>
+#include <asm/cpcmd.h>
+#include <asm/lowcore.h>
+#include <asm/debug.h>
+#include <asm/ipl.h>
+#include "entry.h"
+
+void (*pgm_check_table[128])(struct pt_regs *regs);
+
+int show_unhandled_signals = 1;
+
+#define stack_pointer ({ void **sp; asm("la %0,0(15)" : "=&d" (sp)); sp; })
+
+#ifndef CONFIG_64BIT
+#define LONG "%08lx "
+#define FOURLONG "%08lx %08lx %08lx %08lx\n"
+static int kstack_depth_to_print = 12;
+#else /* CONFIG_64BIT */
+#define LONG "%016lx "
+#define FOURLONG "%016lx %016lx %016lx %016lx\n"
+static int kstack_depth_to_print = 20;
+#endif /* CONFIG_64BIT */
+
+/*
+ * For show_trace we have tree different stack to consider:
+ *   - the panic stack which is used if the kernel stack has overflown
+ *   - the asynchronous interrupt stack (cpu related)
+ *   - the synchronous kernel stack (process related)
+ * The stack trace can start at any of the three stack and can potentially
+ * touch all of them. The order is: panic stack, async stack, sync stack.
+ */
+static unsigned long
+__show_trace(unsigned long sp, unsigned long low, unsigned long high)
+{
+	struct stack_frame *sf;
+	struct pt_regs *regs;
+
+	while (1) {
+		sp = sp & PSW_ADDR_INSN;
+		if (sp < low || sp > high - sizeof(*sf))
+			return sp;
+		sf = (struct stack_frame *) sp;
+		printk("([<%016lx>] ", sf->gprs[8] & PSW_ADDR_INSN);
+		print_symbol("%s)\n", sf->gprs[8] & PSW_ADDR_INSN);
+		/* Follow the backchain. */
+		while (1) {
+			low = sp;
+			sp = sf->back_chain & PSW_ADDR_INSN;
+			if (!sp)
+				break;
+			if (sp <= low || sp > high - sizeof(*sf))
+				return sp;
+			sf = (struct stack_frame *) sp;
+			printk(" [<%016lx>] ", sf->gprs[8] & PSW_ADDR_INSN);
+			print_symbol("%s\n", sf->gprs[8] & PSW_ADDR_INSN);
+		}
+		/* Zero backchain detected, check for interrupt frame. */
+		sp = (unsigned long) (sf + 1);
+		if (sp <= low || sp > high - sizeof(*regs))
+			return sp;
+		regs = (struct pt_regs *) sp;
+		printk(" [<%016lx>] ", regs->psw.addr & PSW_ADDR_INSN);
+		print_symbol("%s\n", regs->psw.addr & PSW_ADDR_INSN);
+		low = sp;
+		sp = regs->gprs[15];
+	}
+}
+
+static void show_trace(struct task_struct *task, unsigned long *stack)
+{
+	register unsigned long __r15 asm ("15");
+	unsigned long sp;
+
+	sp = (unsigned long) stack;
+	if (!sp)
+		sp = task ? task->thread.ksp : __r15;
+	printk("Call Trace:\n");
+#ifdef CONFIG_CHECK_STACK
+	sp = __show_trace(sp, S390_lowcore.panic_stack - 4096,
+			  S390_lowcore.panic_stack);
+#endif
+	sp = __show_trace(sp, S390_lowcore.async_stack - ASYNC_SIZE,
+			  S390_lowcore.async_stack);
+	if (task)
+		__show_trace(sp, (unsigned long) task_stack_page(task),
+			     (unsigned long) task_stack_page(task) + THREAD_SIZE);
+	else
+		__show_trace(sp, S390_lowcore.thread_info,
+			     S390_lowcore.thread_info + THREAD_SIZE);
+	if (!task)
+		task = current;
+	debug_show_held_locks(task);
+}
+
+void show_stack(struct task_struct *task, unsigned long *sp)
+{
+	register unsigned long * __r15 asm ("15");
+	unsigned long *stack;
+	int i;
+
+	if (!sp)
+		stack = task ? (unsigned long *) task->thread.ksp : __r15;
+	else
+		stack = sp;
+
+	for (i = 0; i < kstack_depth_to_print; i++) {
+		if (((addr_t) stack & (THREAD_SIZE-1)) == 0)
+			break;
+		if ((i * sizeof(long) % 32) == 0)
+			printk("%s       ", i == 0 ? "" : "\n");
+		printk(LONG, *stack++);
+	}
+	printk("\n");
+	show_trace(task, sp);
+}
+
+static void show_last_breaking_event(struct pt_regs *regs)
+{
+#ifdef CONFIG_64BIT
+	printk("Last Breaking-Event-Address:\n");
+	printk(" [<%016lx>] ", regs->args[0] & PSW_ADDR_INSN);
+	print_symbol("%s\n", regs->args[0] & PSW_ADDR_INSN);
+#endif
+}
+
+/*
+ * The architecture-independent dump_stack generator
+ */
+void dump_stack(void)
+{
+	printk("CPU: %d %s %s %.*s\n",
+	       task_thread_info(current)->cpu, print_tainted(),
+	       init_utsname()->release,
+	       (int)strcspn(init_utsname()->version, " "),
+	       init_utsname()->version);
+	printk("Process %s (pid: %d, task: %p, ksp: %p)\n",
+	       current->comm, current->pid, current,
+	       (void *) current->thread.ksp);
+	show_stack(NULL, NULL);
+}
+EXPORT_SYMBOL(dump_stack);
+
+static inline int mask_bits(struct pt_regs *regs, unsigned long bits)
+{
+	return (regs->psw.mask & bits) / ((~bits + 1) & bits);
+}
+
+void show_registers(struct pt_regs *regs)
+{
+	char *mode;
+
+	mode = (regs->psw.mask & PSW_MASK_PSTATE) ? "User" : "Krnl";
+	printk("%s PSW : %p %p",
+	       mode, (void *) regs->psw.mask,
+	       (void *) regs->psw.addr);
+	print_symbol(" (%s)\n", regs->psw.addr & PSW_ADDR_INSN);
+	printk("           R:%x T:%x IO:%x EX:%x Key:%x M:%x W:%x "
+	       "P:%x AS:%x CC:%x PM:%x", mask_bits(regs, PSW_MASK_PER),
+	       mask_bits(regs, PSW_MASK_DAT), mask_bits(regs, PSW_MASK_IO),
+	       mask_bits(regs, PSW_MASK_EXT), mask_bits(regs, PSW_MASK_KEY),
+	       mask_bits(regs, PSW_MASK_MCHECK), mask_bits(regs, PSW_MASK_WAIT),
+	       mask_bits(regs, PSW_MASK_PSTATE), mask_bits(regs, PSW_MASK_ASC),
+	       mask_bits(regs, PSW_MASK_CC), mask_bits(regs, PSW_MASK_PM));
+#ifdef CONFIG_64BIT
+	printk(" EA:%x", mask_bits(regs, PSW_MASK_EA | PSW_MASK_BA));
+#endif
+	printk("\n%s GPRS: " FOURLONG, mode,
+	       regs->gprs[0], regs->gprs[1], regs->gprs[2], regs->gprs[3]);
+	printk("           " FOURLONG,
+	       regs->gprs[4], regs->gprs[5], regs->gprs[6], regs->gprs[7]);
+	printk("           " FOURLONG,
+	       regs->gprs[8], regs->gprs[9], regs->gprs[10], regs->gprs[11]);
+	printk("           " FOURLONG,
+	       regs->gprs[12], regs->gprs[13], regs->gprs[14], regs->gprs[15]);
+
+	show_code(regs);
+}	
+
+void show_regs(struct pt_regs *regs)
+{
+	print_modules();
+	printk("CPU: %d %s %s %.*s\n",
+	       task_thread_info(current)->cpu, print_tainted(),
+	       init_utsname()->release,
+	       (int)strcspn(init_utsname()->version, " "),
+	       init_utsname()->version);
+	printk("Process %s (pid: %d, task: %p, ksp: %p)\n",
+	       current->comm, current->pid, current,
+	       (void *) current->thread.ksp);
+	show_registers(regs);
+	/* Show stack backtrace if pt_regs is from kernel mode */
+	if (!(regs->psw.mask & PSW_MASK_PSTATE))
+		show_trace(NULL, (unsigned long *) regs->gprs[15]);
+	show_last_breaking_event(regs);
+}
+
+static DEFINE_SPINLOCK(die_lock);
+
+void die(struct pt_regs *regs, const char *str)
+{
+	static int die_counter;
+
+	oops_enter();
+	lgr_info_log();
+	debug_stop_all();
+	console_verbose();
+	spin_lock_irq(&die_lock);
+	bust_spinlocks(1);
+	printk("%s: %04x [#%d] ", str, regs->int_code & 0xffff, ++die_counter);
+#ifdef CONFIG_PREEMPT
+	printk("PREEMPT ");
+#endif
+#ifdef CONFIG_SMP
+	printk("SMP ");
+#endif
+#ifdef CONFIG_DEBUG_PAGEALLOC
+	printk("DEBUG_PAGEALLOC");
+#endif
+	printk("\n");
+	notify_die(DIE_OOPS, str, regs, 0, regs->int_code & 0xffff, SIGSEGV);
+	show_regs(regs);
+	bust_spinlocks(0);
+	add_taint(TAINT_DIE);
+	spin_unlock_irq(&die_lock);
+	if (in_interrupt())
+		panic("Fatal exception in interrupt");
+	if (panic_on_oops)
+		panic("Fatal exception: panic_on_oops");
+	oops_exit();
+	do_exit(SIGSEGV);
+}
+
+static inline void report_user_fault(struct pt_regs *regs, int signr)
+{
+	if ((task_pid_nr(current) > 1) && !show_unhandled_signals)
+		return;
+	if (!unhandled_signal(current, signr))
+		return;
+	if (!printk_ratelimit())
+		return;
+	printk("User process fault: interruption code 0x%X ", regs->int_code);
+	print_vma_addr("in ", regs->psw.addr & PSW_ADDR_INSN);
+	printk("\n");
+	show_regs(regs);
+}
+
+int is_valid_bugaddr(unsigned long addr)
+{
+	return 1;
+}
+
+static inline void __user *get_psw_address(struct pt_regs *regs)
+{
+	return (void __user *)
+		((regs->psw.addr - (regs->int_code >> 16)) & PSW_ADDR_INSN);
+}
+
+static void __kprobes do_trap(struct pt_regs *regs,
+			      int si_signo, int si_code, char *str)
+{
+	siginfo_t info;
+
+	if (notify_die(DIE_TRAP, str, regs, 0,
+		       regs->int_code, si_signo) == NOTIFY_STOP)
+		return;
+
+        if (regs->psw.mask & PSW_MASK_PSTATE) {
+		info.si_signo = si_signo;
+		info.si_errno = 0;
+		info.si_code = si_code;
+		info.si_addr = get_psw_address(regs);
+		force_sig_info(si_signo, &info, current);
+		report_user_fault(regs, si_signo);
+        } else {
+                const struct exception_table_entry *fixup;
+                fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
+                if (fixup)
+                        regs->psw.addr = fixup->fixup | PSW_ADDR_AMODE;
+		else {
+			enum bug_trap_type btt;
+
+			btt = report_bug(regs->psw.addr & PSW_ADDR_INSN, regs);
+			if (btt == BUG_TRAP_TYPE_WARN)
+				return;
+			die(regs, str);
+		}
+        }
+}
+
+void __kprobes do_per_trap(struct pt_regs *regs)
+{
+	siginfo_t info;
+
+	if (notify_die(DIE_SSTEP, "sstep", regs, 0, 0, SIGTRAP) == NOTIFY_STOP)
+		return;
+	if (!current->ptrace)
+		return;
+	info.si_signo = SIGTRAP;
+	info.si_errno = 0;
+	info.si_code = TRAP_HWBKPT;
+	info.si_addr =
+		(void __force __user *) current->thread.per_event.address;
+	force_sig_info(SIGTRAP, &info, current);
+}
+
+static void default_trap_handler(struct pt_regs *regs)
+{
+        if (regs->psw.mask & PSW_MASK_PSTATE) {
+		report_user_fault(regs, SIGSEGV);
+		do_exit(SIGSEGV);
+	} else
+		die(regs, "Unknown program exception");
+}
+
+#define DO_ERROR_INFO(name, signr, sicode, str) \
+static void name(struct pt_regs *regs) \
+{ \
+	do_trap(regs, signr, sicode, str); \
+}
+
+DO_ERROR_INFO(addressing_exception, SIGILL, ILL_ILLADR,
+	      "addressing exception")
+DO_ERROR_INFO(execute_exception, SIGILL, ILL_ILLOPN,
+	      "execute exception")
+DO_ERROR_INFO(divide_exception, SIGFPE, FPE_INTDIV,
+	      "fixpoint divide exception")
+DO_ERROR_INFO(overflow_exception, SIGFPE, FPE_INTOVF,
+	      "fixpoint overflow exception")
+DO_ERROR_INFO(hfp_overflow_exception, SIGFPE, FPE_FLTOVF,
+	      "HFP overflow exception")
+DO_ERROR_INFO(hfp_underflow_exception, SIGFPE, FPE_FLTUND,
+	      "HFP underflow exception")
+DO_ERROR_INFO(hfp_significance_exception, SIGFPE, FPE_FLTRES,
+	      "HFP significance exception")
+DO_ERROR_INFO(hfp_divide_exception, SIGFPE, FPE_FLTDIV,
+	      "HFP divide exception")
+DO_ERROR_INFO(hfp_sqrt_exception, SIGFPE, FPE_FLTINV,
+	      "HFP square root exception")
+DO_ERROR_INFO(operand_exception, SIGILL, ILL_ILLOPN,
+	      "operand exception")
+DO_ERROR_INFO(privileged_op, SIGILL, ILL_PRVOPC,
+	      "privileged operation")
+DO_ERROR_INFO(special_op_exception, SIGILL, ILL_ILLOPN,
+	      "special operation exception")
+DO_ERROR_INFO(translation_exception, SIGILL, ILL_ILLOPN,
+	      "translation exception")
+
+static inline void do_fp_trap(struct pt_regs *regs, int fpc)
+{
+	int si_code = 0;
+	/* FPC[2] is Data Exception Code */
+	if ((fpc & 0x00000300) == 0) {
+		/* bits 6 and 7 of DXC are 0 iff IEEE exception */
+		if (fpc & 0x8000) /* invalid fp operation */
+			si_code = FPE_FLTINV;
+		else if (fpc & 0x4000) /* div by 0 */
+			si_code = FPE_FLTDIV;
+		else if (fpc & 0x2000) /* overflow */
+			si_code = FPE_FLTOVF;
+		else if (fpc & 0x1000) /* underflow */
+			si_code = FPE_FLTUND;
+		else if (fpc & 0x0800) /* inexact */
+			si_code = FPE_FLTRES;
+	}
+	do_trap(regs, SIGFPE, si_code, "floating point exception");
+}
+
+static void __kprobes illegal_op(struct pt_regs *regs)
+{
+	siginfo_t info;
+        __u8 opcode[6];
+	__u16 __user *location;
+	int signal = 0;
+
+	location = get_psw_address(regs);
+
+	if (regs->psw.mask & PSW_MASK_PSTATE) {
+		if (get_user(*((__u16 *) opcode), (__u16 __user *) location))
+			return;
+		if (*((__u16 *) opcode) == S390_BREAKPOINT_U16) {
+			if (current->ptrace) {
+				info.si_signo = SIGTRAP;
+				info.si_errno = 0;
+				info.si_code = TRAP_BRKPT;
+				info.si_addr = location;
+				force_sig_info(SIGTRAP, &info, current);
+			} else
+				signal = SIGILL;
+#ifdef CONFIG_MATHEMU
+		} else if (opcode[0] == 0xb3) {
+			if (get_user(*((__u16 *) (opcode+2)), location+1))
+				return;
+			signal = math_emu_b3(opcode, regs);
+                } else if (opcode[0] == 0xed) {
+			if (get_user(*((__u32 *) (opcode+2)),
+				     (__u32 __user *)(location+1)))
+				return;
+			signal = math_emu_ed(opcode, regs);
+		} else if (*((__u16 *) opcode) == 0xb299) {
+			if (get_user(*((__u16 *) (opcode+2)), location+1))
+				return;
+			signal = math_emu_srnm(opcode, regs);
+		} else if (*((__u16 *) opcode) == 0xb29c) {
+			if (get_user(*((__u16 *) (opcode+2)), location+1))
+				return;
+			signal = math_emu_stfpc(opcode, regs);
+		} else if (*((__u16 *) opcode) == 0xb29d) {
+			if (get_user(*((__u16 *) (opcode+2)), location+1))
+				return;
+			signal = math_emu_lfpc(opcode, regs);
+#endif
+		} else
+			signal = SIGILL;
+	} else {
+		/*
+		 * If we get an illegal op in kernel mode, send it through the
+		 * kprobes notifier. If kprobes doesn't pick it up, SIGILL
+		 */
+		if (notify_die(DIE_BPT, "bpt", regs, 0,
+			       3, SIGTRAP) != NOTIFY_STOP)
+			signal = SIGILL;
+	}
+
+#ifdef CONFIG_MATHEMU
+        if (signal == SIGFPE)
+		do_fp_trap(regs, current->thread.fp_regs.fpc);
+	else if (signal == SIGSEGV)
+		do_trap(regs, signal, SEGV_MAPERR, "user address fault");
+	else
+#endif
+	if (signal)
+		do_trap(regs, signal, ILL_ILLOPC, "illegal operation");
+}
+
+
+#ifdef CONFIG_MATHEMU
+void specification_exception(struct pt_regs *regs)
+{
+        __u8 opcode[6];
+	__u16 __user *location = NULL;
+	int signal = 0;
+
+	location = (__u16 __user *) get_psw_address(regs);
+
+        if (regs->psw.mask & PSW_MASK_PSTATE) {
+		get_user(*((__u16 *) opcode), location);
+		switch (opcode[0]) {
+		case 0x28: /* LDR Rx,Ry   */
+			signal = math_emu_ldr(opcode);
+			break;
+		case 0x38: /* LER Rx,Ry   */
+			signal = math_emu_ler(opcode);
+			break;
+		case 0x60: /* STD R,D(X,B) */
+			get_user(*((__u16 *) (opcode+2)), location+1);
+			signal = math_emu_std(opcode, regs);
+			break;
+		case 0x68: /* LD R,D(X,B) */
+			get_user(*((__u16 *) (opcode+2)), location+1);
+			signal = math_emu_ld(opcode, regs);
+			break;
+		case 0x70: /* STE R,D(X,B) */
+			get_user(*((__u16 *) (opcode+2)), location+1);
+			signal = math_emu_ste(opcode, regs);
+			break;
+		case 0x78: /* LE R,D(X,B) */
+			get_user(*((__u16 *) (opcode+2)), location+1);
+			signal = math_emu_le(opcode, regs);
+			break;
+		default:
+			signal = SIGILL;
+			break;
+                }
+        } else
+		signal = SIGILL;
+
+        if (signal == SIGFPE)
+		do_fp_trap(regs, current->thread.fp_regs.fpc);
+	else if (signal)
+		do_trap(regs, signal, ILL_ILLOPN, "specification exception");
+}
+#else
+DO_ERROR_INFO(specification_exception, SIGILL, ILL_ILLOPN,
+	      "specification exception");
+#endif
+
+static void data_exception(struct pt_regs *regs)
+{
+	__u16 __user *location;
+	int signal = 0;
+
+	location = get_psw_address(regs);
+
+	if (MACHINE_HAS_IEEE)
+		asm volatile("stfpc %0" : "=m" (current->thread.fp_regs.fpc));
+
+#ifdef CONFIG_MATHEMU
+        else if (regs->psw.mask & PSW_MASK_PSTATE) {
+        	__u8 opcode[6];
+		get_user(*((__u16 *) opcode), location);
+		switch (opcode[0]) {
+		case 0x28: /* LDR Rx,Ry   */
+			signal = math_emu_ldr(opcode);
+			break;
+		case 0x38: /* LER Rx,Ry   */
+			signal = math_emu_ler(opcode);
+			break;
+		case 0x60: /* STD R,D(X,B) */
+			get_user(*((__u16 *) (opcode+2)), location+1);
+			signal = math_emu_std(opcode, regs);
+			break;
+		case 0x68: /* LD R,D(X,B) */
+			get_user(*((__u16 *) (opcode+2)), location+1);
+			signal = math_emu_ld(opcode, regs);
+			break;
+		case 0x70: /* STE R,D(X,B) */
+			get_user(*((__u16 *) (opcode+2)), location+1);
+			signal = math_emu_ste(opcode, regs);
+			break;
+		case 0x78: /* LE R,D(X,B) */
+			get_user(*((__u16 *) (opcode+2)), location+1);
+			signal = math_emu_le(opcode, regs);
+			break;
+		case 0xb3:
+			get_user(*((__u16 *) (opcode+2)), location+1);
+			signal = math_emu_b3(opcode, regs);
+			break;
+                case 0xed:
+			get_user(*((__u32 *) (opcode+2)),
+				 (__u32 __user *)(location+1));
+			signal = math_emu_ed(opcode, regs);
+			break;
+	        case 0xb2:
+			if (opcode[1] == 0x99) {
+				get_user(*((__u16 *) (opcode+2)), location+1);
+				signal = math_emu_srnm(opcode, regs);
+			} else if (opcode[1] == 0x9c) {
+				get_user(*((__u16 *) (opcode+2)), location+1);
+				signal = math_emu_stfpc(opcode, regs);
+			} else if (opcode[1] == 0x9d) {
+				get_user(*((__u16 *) (opcode+2)), location+1);
+				signal = math_emu_lfpc(opcode, regs);
+			} else
+				signal = SIGILL;
+			break;
+		default:
+			signal = SIGILL;
+			break;
+                }
+        }
+#endif 
+	if (current->thread.fp_regs.fpc & FPC_DXC_MASK)
+		signal = SIGFPE;
+	else
+		signal = SIGILL;
+        if (signal == SIGFPE)
+		do_fp_trap(regs, current->thread.fp_regs.fpc);
+	else if (signal)
+		do_trap(regs, signal, ILL_ILLOPN, "data exception");
+}
+
+static void space_switch_exception(struct pt_regs *regs)
+{
+	/* Set user psw back to home space mode. */
+	if (regs->psw.mask & PSW_MASK_PSTATE)
+		regs->psw.mask |= PSW_ASC_HOME;
+	/* Send SIGILL. */
+	do_trap(regs, SIGILL, ILL_PRVOPC, "space switch event");
+}
+
+void __kprobes kernel_stack_overflow(struct pt_regs * regs)
+{
+	bust_spinlocks(1);
+	printk("Kernel stack overflow.\n");
+	show_regs(regs);
+	bust_spinlocks(0);
+	panic("Corrupt kernel stack, can't continue.");
+}
+
+/* init is done in lowcore.S and head.S */
+
+void __init trap_init(void)
+{
+        int i;
+
+        for (i = 0; i < 128; i++)
+          pgm_check_table[i] = &default_trap_handler;
+        pgm_check_table[1] = &illegal_op;
+        pgm_check_table[2] = &privileged_op;
+        pgm_check_table[3] = &execute_exception;
+        pgm_check_table[4] = &do_protection_exception;
+        pgm_check_table[5] = &addressing_exception;
+        pgm_check_table[6] = &specification_exception;
+        pgm_check_table[7] = &data_exception;
+        pgm_check_table[8] = &overflow_exception;
+        pgm_check_table[9] = &divide_exception;
+        pgm_check_table[0x0A] = &overflow_exception;
+        pgm_check_table[0x0B] = &divide_exception;
+        pgm_check_table[0x0C] = &hfp_overflow_exception;
+        pgm_check_table[0x0D] = &hfp_underflow_exception;
+        pgm_check_table[0x0E] = &hfp_significance_exception;
+        pgm_check_table[0x0F] = &hfp_divide_exception;
+        pgm_check_table[0x10] = &do_dat_exception;
+        pgm_check_table[0x11] = &do_dat_exception;
+        pgm_check_table[0x12] = &translation_exception;
+        pgm_check_table[0x13] = &special_op_exception;
+#ifdef CONFIG_64BIT
+	pgm_check_table[0x38] = &do_asce_exception;
+	pgm_check_table[0x39] = &do_dat_exception;
+	pgm_check_table[0x3A] = &do_dat_exception;
+        pgm_check_table[0x3B] = &do_dat_exception;
+#endif /* CONFIG_64BIT */
+        pgm_check_table[0x15] = &operand_exception;
+        pgm_check_table[0x1C] = &space_switch_exception;
+        pgm_check_table[0x1D] = &hfp_sqrt_exception;
+	/* Enable machine checks early. */
+	local_mcck_enable();
+}