public static function unit_lea()
{
if (($address = parent::$cpu->address()) === null) {
parent::exception(PLATO_EX_UNIT_LEA);
}
parent::$register->write(parent::$mod['code'], $address);
return 0;
}
public static function unit_jmp()
{
switch (parent::$opcode) {
/* EB cb */
case 0xeb:
parent::$cpu->jump(parent::$imm, false, 1);
break;
/* JMP rel16 */
/* JMP rel32 */
/* JMP rel16 */
/* JMP rel32 */
case 0xe9:
parent::$cpu->jump(parent::$imm, false);
break;
/* JMP r/m16 */
/* JMP r/m32 */
/* JMP r/m16 */
/* JMP r/m32 */
case 0xff:
parent::$cpu->jump(parent::$cpu->read_address());
break;
/* JMP ptr16:16 */
/* JMP ptr16:32 */
/* JMP ptr16:16 */
/* JMP ptr16:32 */
case 0xea:
/* cs */
parent::$code->next_word();
parent::$cpu->jump(parent::$imm);
break;
/* JMP m16:16 */
/* JMP m16:32 */
/* JMP m16:16 */
/* JMP m16:32 */
case 0xff:
if (($address = parent::$cpu->address()) === null) {
parent::exception(PLATO_EX_UNIT_JUMP);
}
parent::$cpu->jump(parent::$cpu->read_address($address));
break;
}
return 0;
}
public static function initialize($ldr)
{
self::$ldr = $ldr;
self::$cpu = $ldr->cpu;
self::$decoder = $ldr->cpu->decoder;
self::$register = $ldr->cpu->register;
self::$alu = $ldr->cpu->alu;
self::$info =& $ldr->cpu->decoder->info;
self::$opcode =& $ldr->cpu->decoder->opcode;
self::$opbase =& $ldr->cpu->decoder->opbase;
self::$opsize =& $ldr->cpu->decoder->opsize;
self::$mod =& $ldr->cpu->decoder->mod;
self::$imm =& $ldr->cpu->decoder->imm;
self::$direction =& $ldr->cpu->decoder->direction;
self::$condition =& $ldr->cpu->decoder->condition;
if (!empty(self::$module)) {
$prefix = dirname(__FILE__) . '/module/class.';
foreach (self::$module as $item) {
require_once $prefix . $item . '.php';
}
self::$module = false;
}
}
public static function unit_ud2()
{
parent::exception(PLATO_EX_UNIT_UD3);
}
public static function unit_cpuid()
{
parent::exception(PLATO_EX_UNIT_CPUID);
}
public static function unit_int()
{
switch (parent::$opcode) {
/* INT 3 */
case 0xcc:
parent::exception(PLATO_EX_UNIT_INT3);
/* INT imm8 */
/* INT imm8 */
case 0xcd:
parent::exception(PLATO_EX_UNIT_INT);
/* INTO */
/* INTO */
case 0xce:
if (parent::$register->OF) {
parent::exception(PLATO_EX_UNIT_INTO);
}
break;
}
return 0;
}