* gnu-v3-abi.c (vtable_ptrdiff_type): New function.

	(gnuv3_decode_method_ptr, gnuv3_print_method_ptr)
	(gnuv3_method_ptr_to_value): Use a better approximation for
	`ptrdiff_t' instead of `long'.

	* m32c-tdep.c (m32c_gdbarch_init): Call set_gdbarch_vbit_in_delta().
	(m32c_push_dummy_call): Dereference pointer type.

1 files changed, 14 insertions, 0 deletions

diff --git a/gdb/m32c-tdep.c b/gdb/m32c-tdep.c
index b8cd167..2dc41d3 100644
--- a/gdb/m32c-tdep.c
+++ b/gdb/m32c-tdep.c
@@ -2018,6 +2018,10 @@ m32c_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
   {
     struct type *func_type = value_type (function);
 
+    /* Dereference function pointer types.  */
+    if (TYPE_CODE (func_type) == TYPE_CODE_PTR)
+      func_type = TYPE_TARGET_TYPE (func_type);
+
     gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC ||
 		TYPE_CODE (func_type) == TYPE_CODE_METHOD);
 
@@ -2596,6 +2600,16 @@ m32c_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
 
   set_gdbarch_virtual_frame_pointer (arch, m32c_virtual_frame_pointer);
 
+  /* m32c function boundary addresses are not necessarily even.
+     Therefore, the `vbit', which indicates a pointer to a virtual
+     member function, is stored in the delta field, rather than as
+     the low bit of a function pointer address.  
+
+     In order to verify this, see the definition of
+     TARGET_PTRMEMFUNC_VBIT_LOCATION in gcc/defaults.h along with the
+     definition of FUNCTION_BOUNDARY in gcc/config/m32c/m32c.h.  */
+  set_gdbarch_vbit_in_delta (arch, 1);
+
   return arch;
 }