h8300.h (CPP_PREDEFINES, [...]): Add h8/300h support.

	* h8300/h8300.h (CPP_PREDEFINES, CPP_SPEC, LIB_SPEC, TARGET_SWITCHES,
	BITS_PER_WORD, MAX_BITS_PER_WORD, UNITS_PER_WORD, MAX_UNITS_PER_WORD,
	POINTER_SIZE, PARM_BOUNDARY, BIGGEST_ALIGNMENT,
	BIGGEST_FIELD_ALIGNMENT, STACK_BOUNDARY, HARD_REGNO_NREGS,
	HARD_REGNO_MODE_OK, REG_CLASS_NAMES, REG_CLASS_CONTENTS,
	REGNO_REG_CLASS, PUSH_ROUNDING, FUNCTION_ARG_ADVANCE,
	TRAMPOLINE_TEMPLATE, TRAMPOLINE_SIZE, INITIALIZE_TRAMPOLINE,
	CONSTANT_ADDRESS, MOVE_MAX, Pmode, SIZE_TYPE, PTRDIFF_TYPE):
	Add h8/300h support.
	(LINK_SPEC, TARGET_RTL_DUMP, TARGET_H8300, TARGET_H8300H,
	REAL_ARITHMETIC, SETUP_INCOMING_VARARGS, HAVE_POST_INCREMENT,
	HAVE_PRE_DECREMENT, MAX_MOVE_MAX, NO_BUILTIN_SIZE_TYPE,
	NO_BUILTIN_PTRDIFF_TYPE, WCHAR_TYPE, WCHAR_TYPE_SIZE,
	MAX_WCHAR_TYPE_SIZE, ASM_WORD_OP, INIT_SECTION_ASM_OP,
	CTORS_SECTION_ASM_OP, DTORS_SECTION_ASM_OP, EXTRA_SECTIONS,
	EXTRA_SECTION_FUNCTIONS, ASM_OUTPUT_CONSTRUCTOR, ASM_OUTPUT_DESTRUCTOR,
	DO_GLOBAL_CTORS_BODY, DO_GLOBAL_DTORS_BODY, INIT_TARGET_OPTABS):
	Define.
	(CAN_DEBUG_WITHOUT_FP, PCC_STATIC_STRUCT_RETURN, STRUCT_VALUE_REGNUM,
	STRUCT_VALUE_INCOMING, STRUCTURE_SIZE_BOUNDARY): Undefine.
	(enum reg_class): Add h8/300h support.
	(emit_a_shift): Declare.
	(TARGET_DEFAULT): Set default to -mquickcall.
	(DOUBLE_TYPE_SIZE): Fix at 32.  DFmode support doesn't exist.
	(CALL_USED_REGISTERS, REG_ALLOC_ORDER): Swap registers 2,3 with 4,5.
	Registers 0,1 contain function result, allocate after 2,3.
	(STATIC_CHAIN_REGNUM): Use reg 4.
	(CONST_OK_FOR_LETTER_P): 'O' is ok_for_bclr, 'P' is small_power_of_two.
	(FUNCTION_PROFILER, FUNCTION_BLOCK_PROFILER, BLOCK_PROFILER): First
	attempt at an implementation.
	(CONST_COSTS): Move code into function const_costs.
	(BRANCH_COST): Set to 0.
	(NOTICE_UPDATE_CC): Move code into function notice_update_cc.
	(ASM_FILE_START): Move code into function asm_file_start.
	(ASM_FILE_END): Move code into function asm_file_end.
	(ASM_OUTPUT_DOUBLE, ASM_OUTPUT_FLOAT): Use REAL_VALUE_TO_DECIMAL.

From-SVN: r7728