+# Number of bits in a char or unsigned char for the target machine.
+# Just like CHAR_BIT in <limits.h> but describes the target machine.
+# v::TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
+#
+# Number of bits in a short or unsigned short for the target machine.
+v::TARGET_SHORT_BIT:int:short_bit::::8 * sizeof (short):2*TARGET_CHAR_BIT::0
+# Number of bits in an int or unsigned int for the target machine.
+v::TARGET_INT_BIT:int:int_bit::::8 * sizeof (int):4*TARGET_CHAR_BIT::0
+# Number of bits in a long or unsigned long for the target machine.
+v::TARGET_LONG_BIT:int:long_bit::::8 * sizeof (long):4*TARGET_CHAR_BIT::0
+# Number of bits in a long long or unsigned long long for the target
+# machine.
+v::TARGET_LONG_LONG_BIT:int:long_long_bit::::8 * sizeof (LONGEST):2*TARGET_LONG_BIT::0
+# Number of bits in a float for the target machine.
+v::TARGET_FLOAT_BIT:int:float_bit::::8 * sizeof (float):4*TARGET_CHAR_BIT::0
+# Number of bits in a double for the target machine.
+v::TARGET_DOUBLE_BIT:int:double_bit::::8 * sizeof (double):8*TARGET_CHAR_BIT::0
+# Number of bits in a long double for the target machine.
+v::TARGET_LONG_DOUBLE_BIT:int:long_double_bit::::8 * sizeof (long double):2*TARGET_DOUBLE_BIT::0
+# For most targets, a pointer on the target and its representation as an
+# address in GDB have the same size and "look the same". For such a
+# target, you need only set TARGET_PTR_BIT / ptr_bit and TARGET_ADDR_BIT
+# / addr_bit will be set from it.
+#
+# If TARGET_PTR_BIT and TARGET_ADDR_BIT are different, you'll probably
+# also need to set POINTER_TO_ADDRESS and ADDRESS_TO_POINTER as well.