Add M32R_ARG_REGISTER_SIZE

gdb/
	* m32r-tdep.c M32R_ARG_REGISTER_SIZE: Added.
	(m32r_push_dummy_call): Use M32R_ARG_REGISTER_SIZE.

Author: a74nh

gdb/ChangeLog

@@ -1,3 +1,8 @@
+2017-04-12  Alan Hayward  <alan.hayward@arm.com>
+
+	* m32r-tdep.c M32R_ARG_REGISTER_SIZE: Added.
+	(m32r_push_dummy_call): Use M32R_ARG_REGISTER_SIZE.
+
 2017-04-12  Sergio Durigan Junior  <sergiodj@redhat.com>
 
 	* windows-nat.c (windows_create_inferior): Declare 'toexec' as

gdb/m32r-tdep.c

@@ -39,6 +39,9 @@
 #include "m32r-tdep.h"
 #include <algorithm>
 
+/* The size of the argument registers (r0 - r3) in bytes.  */
+#define M32R_ARG_REGISTER_SIZE 4
+
 /* Local functions */
 
 extern void _initialize_m32r_tdep (void);
@@ -677,7 +680,7 @@ m32r_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
   enum type_code typecode;
   CORE_ADDR regval;
   gdb_byte *val;
-  gdb_byte valbuf[MAX_REGISTER_SIZE];
+  gdb_byte valbuf[M32R_ARG_REGISTER_SIZE];
   int len;
 
   /* First force sp to a 4-byte alignment.  */