1 files changed, 82 insertions, 0 deletions

diff --git a/arch/sh/mm/fault-nommu.c b/arch/sh/mm/fault-nommu.c
new file mode 100644
index 000000000000..34d4e0c68fbb
--- /dev/null
+++ b/arch/sh/mm/fault-nommu.c
@@ -0,0 +1,82 @@
+/* 
+ * arch/sh/mm/fault-nommu.c
+ *
+ * Copyright (C) 2002 Paul Mundt
+ *
+ * Based on linux/arch/sh/mm/fault.c:
+ *  Copyright (C) 1999  Niibe Yutaka
+ *
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/ptrace.h>
+#include <linux/mman.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/interrupt.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/pgalloc.h>
+#include <asm/mmu_context.h>
+#include <asm/cacheflush.h>
+
+#if defined(CONFIG_SH_KGDB)
+#include <asm/kgdb.h>
+#endif
+
+extern void die(const char *,struct pt_regs *,long);
+
+/*
+ * This routine handles page faults.  It determines the address,
+ * and the problem, and then passes it off to one of the appropriate
+ * routines.
+ */
+asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
+                              unsigned long address)
+{
+#if defined(CONFIG_SH_KGDB)
+        if (kgdb_nofault && kgdb_bus_err_hook)
+                kgdb_bus_err_hook();
+#endif
+
+        /*
+         * Oops. The kernel tried to access some bad page. We'll have to
+         * terminate things with extreme prejudice.
+         *
+         */
+        if (address < PAGE_SIZE) {
+                printk(KERN_ALERT "Unable to handle kernel NULL pointer dereference");
+        } else {
+                printk(KERN_ALERT "Unable to handle kernel paging request");
+        }
+
+        printk(" at virtual address %08lx\n", address);
+        printk(KERN_ALERT "pc = %08lx\n", regs->pc);
+
+        die("Oops", regs, writeaccess);
+        do_exit(SIGKILL);
+}
+
+asmlinkage int __do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
+                               unsigned long address)
+{
+#if defined(CONFIG_SH_KGDB)
+        if (kgdb_nofault && kgdb_bus_err_hook)
+                kgdb_bus_err_hook();
+#endif
+
+        if (address >= TASK_SIZE)
+                return 1;
+
+        return 0;
+}
+