kgdbts,sh: Add in breakpoint pc offset for superh

The kgdb test suite mimics the behavior of gdb.  For the sh
architecture the pc must be decremented by 2 for software breakpoint.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>

drivers/misc/kgdbts.c

@@ -295,6 +295,10 @@ static int check_and_rewind_pc(char *put_str, char *arg)
 	/* On x86 a breakpoint stop requires it to be decremented */
 	if (addr + 1 == kgdbts_regs.ip)
 		offset = -1;
+#elif defined(CONFIG_SUPERH)
+	/* On SUPERH a breakpoint stop requires it to be decremented */
+	if (addr + 2 == kgdbts_regs.pc)
+		offset = -2;
 #endif
 	if (strcmp(arg, "silent") &&
 		instruction_pointer(&kgdbts_regs) + offset != addr) {
@@ -305,6 +309,8 @@ static int check_and_rewind_pc(char *put_str, char *arg)
 #ifdef CONFIG_X86
 	/* On x86 adjust the instruction pointer if needed */
 	kgdbts_regs.ip += offset;
+#elif defined(CONFIG_SUPERH)
+	kgdbts_regs.pc += offset;
 #endif
 	return 0;
 }