* SuperH version: Copyright (C) 1999 Niibe Yutaka
* Copyright (C) 2000 Philipp Rumpf
* Copyright (C) 2000 David Howells
- * Copyright (C) 2002 - 2006 Paul Mundt
+ * Copyright (C) 2002 - 2007 Paul Mundt
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
#include <linux/module.h>
#include <linux/kallsyms.h>
#include <linux/io.h>
+#include <linux/bug.h>
#include <linux/debug_locks.h>
+#include <linux/kdebug.h>
+#include <linux/kexec.h>
+#include <linux/limits.h>
#include <asm/system.h>
#include <asm/uaccess.h>
}
}
-DEFINE_SPINLOCK(die_lock);
+static DEFINE_SPINLOCK(die_lock);
void die(const char * str, struct pt_regs * regs, long err)
{
bust_spinlocks(0);
spin_unlock_irq(&die_lock);
+
+ if (kexec_should_crash(current))
+ crash_kexec(regs);
+
+ if (in_interrupt())
+ panic("Fatal exception in interrupt");
+
+ if (panic_on_oops)
+ panic("Fatal exception");
+
do_exit(SIGSEGV);
}
simple:
ret = handle_unaligned_ins(instruction,regs);
if (ret==0)
- regs->pc += 2;
+ regs->pc += instruction_size(instruction);
return ret;
}
#endif /* CONFIG_CPU_SH2A */
* misaligned data access
* access to >= 0x80000000 is user mode
* Unfortuntaly we can't distinguish between instruction address error
- * and data address errors caused by read acceses.
+ * and data address errors caused by read accesses.
*/
asmlinkage void do_address_error(struct pt_regs *regs,
unsigned long writeaccess,
* Safe guard if DSP mode is already enabled or we're lacking
* the DSP altogether.
*/
- if (!(cpu_data->flags & CPU_HAS_DSP) || (regs->sr & SR_DSP))
+ if (!(current_cpu_data.flags & CPU_HAS_DSP) || (regs->sr & SR_DSP))
return 0;
get_user(inst, ((unsigned short *) regs->pc));
err = do_fpu_inst(inst, regs);
if (!err) {
- regs->pc += 2;
+ regs->pc += instruction_size(inst);
return;
}
/* not a FPU inst. */
per_cpu_trap_init();
}
+#ifdef CONFIG_BUG
+void handle_BUG(struct pt_regs *regs)
+{
+ enum bug_trap_type tt;
+ tt = report_bug(regs->pc);
+ if (tt == BUG_TRAP_TYPE_WARN) {
+ regs->pc += 2;
+ return;
+ }
+
+ die("Kernel BUG", regs, TRAPA_BUG_OPCODE & 0xff);
+}
+
+int is_valid_bugaddr(unsigned long addr)
+{
+ return addr >= PAGE_OFFSET;
+}
+#endif
+
void show_trace(struct task_struct *tsk, unsigned long *sp,
struct pt_regs *regs)
{