HuC6280 addressing mode

HuC6280Opcodes.c

#define ARG1(a)     (a)
#define ARG2(a,b)   ( (a) | ((b) << 8) )
#define ARG3(a,b,c) ( (a) | ((b) << 8) | ((c) << 16) )

#define INDIRECT(c) ( (c) | 0x80 )

enum
{
	ACCUMULATOR,
	IMMEDIATE,
	ZERO_PAGE,
	RELATIVE,
	INDEXED_X,
	INDEXED_Y,
	RELATIVE,
	ABSOLUTE
};

enum AddressingModeHuC6280
{
	ACCUMULATOR_MODE                       = ARG1( ACCUMULATOR ),
	IMMEDIATE_MODE                         = ARG1( IMMEDIATE ),
	IMMEDIATE_ZERO_PAGE_MODE               = ARG3( IMMEDIATE, ZERO_PAGE, INDEXED_X ),
	IMMEDIATE_ZERO_PAGE_INDEXED_X_MODE     = ARG3( IMMEDIATE, ZERO_PAGE, INDEXED_Y ),
	IMMEDIATE_ZERO_PAGE_RELATIVE_MODE      = ARG3( IMMEDIATE, ZERO_PAGE, RELATIVE ),
	IMMEDIATE_ABSOLUTE_MODE                = ARG2( IMMEDIATE, ABSOLUTE ),
	IMMEDIATE_ABSOLUTE_INDEXED_X_MODE      = ARG2( IMMEDIATE, INDEXED_X ),
	ZERO_PAGE_MODE                         = ARG1( ZERO_PAGE ),
	ZERO_PAGE_INDEXED_X_MODE               = ARG2( ZERO_PAGE, INDEXED_X ),
	ZERO_PAGE_INDEXED_Y_MODE               = ARG2( ZERO_PAGE, INDEXED_Y ),
	ZERO_PAGE_RELATIVE_MODE                = ARG2( ZERO_PAGE, RELATIVE ),
	ZERO_PAGE_INDIRECT_MODE                = ARG1( INDIRECT(ZERO_PAGE) ),
	ZERO_PAGE_INDIRECT_PRE_INDEXED_X_MODE  = ARG2( INDIRECT(ZERO_PAGE), INDEXED_X ),
	ZERO_PAGE_INDIRECT_POST_INDEXED_Y_MODE = ARG2( INDIRECT(ZERO_PAGE), INDEXED_Y ),
	RELATIVE_MODE                          = ARG1( RELATIVE ),
	ABSOLUTE_MODE                          = ARG1( ABSOLUTE ),
	ABSOLUTE_INDEXED_X_MODE                = ARG2( ABSOLUTE, INDEXED_X ),
	ABSOLUTE_INDEXED_Y_MODE                = ARG2( ABSOLUTE, INDEXED_Y ),
	ABSOLUTE_INDIRECT_MODE                 = ARG1( INDIRECT(ABSOLUTE) ),
	ABSOLUTE_INDIRECT_PRE_INDEXED_X_MODE   = ARG2( INDIRECT(ABSOLUTE), INDEXED_X ),
	ABSOLUTE_INDIRECT_POST_INDEXED_Y_MODE  = ARG2( INDIRECT(ABSOLUTE), INDEXED_X ),
	SOURCE_DEST_LEN_MODE                   = ARG3(ABSOLUTE, ABSOLUTE, ABSOLUTE),
	UNSUPORTED_MODE
};