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-rw-r--r--arch/s390/kernel/traps.c656
1 files changed, 656 insertions, 0 deletions
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
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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();
+}
generated by cgit (git 2.34.1) at 2024-12-20 08:11:37 +0000