2003-06-23 Andrew Cagney <cagney@redhat.com>

* rs6000-tdep.c (rs6000_register_virtual_type): Add explict cases
	for 0 "int0" and 4 "int32" sized registers.
	* gdbtypes.c (builtin_type_int0): Define.
	(build_gdbtypes): Initialize builtin_type_int0.
	* gdbtypes.h (builtin_type_int0): Declare.

gdb/ChangeLog

@@ -1,3 +1,11 @@
+2003-06-23  Andrew Cagney  <cagney@redhat.com>
+
+	* rs6000-tdep.c (rs6000_register_virtual_type): Add explict cases
+	for 0 "int0" and 4 "int32" sized registers.
+	* gdbtypes.c (builtin_type_int0): Define.
+	(build_gdbtypes): Initialize builtin_type_int0.
+	* gdbtypes.h (builtin_type_int0): Declare.
+
 2003-06-23  Stephane Carrez  <stcarrez@nerim.fr>
 
 	* m68hc11-tdep.c (m68hc11_gdbarch_init): Clear gdb_arch_char_signed

gdb/gdbtypes.c

@@ -60,6 +60,7 @@ struct type *builtin_type_long_double;
 struct type *builtin_type_complex;
 struct type *builtin_type_double_complex;
 struct type *builtin_type_string;
+struct type *builtin_type_int0;
 struct type *builtin_type_int8;
 struct type *builtin_type_uint8;
 struct type *builtin_type_int16;
@@ -3410,6 +3411,10 @@ build_gdbtypes (void)
     init_type (TYPE_CODE_STRING, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
 	       0,
 	       "string", (struct objfile *) NULL);
+  builtin_type_int0 =
+    init_type (TYPE_CODE_INT, 0 / 8,
+	       0,
+	       "int0_t", (struct objfile *) NULL);
   builtin_type_int8 =
     init_type (TYPE_CODE_INT, 8 / 8,
 	       0,

gdb/gdbtypes.h

@@ -956,7 +956,10 @@ extern struct type *builtin_type_CORE_ADDR;
    (cf MIPS). */
 extern struct type *builtin_type_bfd_vma;
 
-/* Explicit sizes - see C9X <intypes.h> for naming scheme */
+/* Explicit sizes - see C9X <intypes.h> for naming scheme.  The "int0"
+   is for when an architecture needs to describe a register that has
+   no size.  */
+extern struct type *builtin_type_int0;
 extern struct type *builtin_type_int8;
 extern struct type *builtin_type_uint8;
 extern struct type *builtin_type_int16;

gdb/rs6000-tdep.c

@@ -1894,6 +1894,10 @@ rs6000_register_virtual_type (int n)
       int size = regsize (reg, tdep->wordsize);
       switch (size)
 	{
+	case 0:
+	  return builtin_type_int0;
+	case 4:
+	  return builtin_type_int32;
 	case 8:
 	  if (tdep->ppc_ev0_regnum <= n && n <= tdep->ppc_ev31_regnum)
 	    return builtin_type_vec64;
@@ -1904,8 +1908,8 @@ rs6000_register_virtual_type (int n)
 	  return builtin_type_vec128;
 	  break;
 	default:
-	  return builtin_type_int32;
-	  break;
+	  internal_error (__FILE__, __LINE__, "Register %d size %d unknown",
+			  n, size);
 	}
     }
 }