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Diffstat (limited to 'arch/microblaze/kernel/exceptions.c')
-rw-r--r--arch/microblaze/kernel/exceptions.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/microblaze/kernel/exceptions.c b/arch/microblaze/kernel/exceptions.c
index 02cbdfe5aa8..b98ee8d0c1c 100644
--- a/arch/microblaze/kernel/exceptions.c
+++ b/arch/microblaze/kernel/exceptions.c
@@ -48,12 +48,17 @@ void die(const char *str, struct pt_regs *fp, long err)
do_exit(err);
}
+/* for user application debugging */
+void sw_exception(struct pt_regs *regs)
+{
+ _exception(SIGTRAP, regs, TRAP_BRKPT, regs->r16);
+}
+
void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
{
siginfo_t info;
if (kernel_mode(regs)) {
- debugger(regs);
die("Exception in kernel mode", regs, signr);
}
info.si_signo = signr;
@@ -143,7 +148,7 @@ asmlinkage void full_exception(struct pt_regs *regs, unsigned int type,
#ifdef CONFIG_MMU
case MICROBLAZE_PRIVILEGED_EXCEPTION:
pr_debug(KERN_WARNING "Privileged exception\n");
- /* "brk r0,r0" - used as debug breakpoint */
+ /* "brk r0,r0" - used as debug breakpoint - old toolchain */
if (get_user(code, (unsigned long *)regs->pc) == 0
&& code == 0x980c0000) {
_exception(SIGTRAP, regs, TRAP_BRKPT, addr);