public function __construct($src, $dst)
{
$this->src = strtolower($src);
$this->dst = strtolower($dst);
$lenSrc = strlen($this->src);
$isNumSrc = is_numeric($this->src);
$isStrSrc = is_string($this->src);
$lenDst = strlen($this->dst);
$isNumDst = is_numeric($this->dst);
$isStrDst = is_string($this->dst);
if ($isNumSrc && $isStrDst && $lenDst == 2) {
$pre = '';
$preLen = 0;
switch ($this->dst) {
case 'ax':
case 'cx':
case 'dx':
case 'bx':
$pre = pack('H*', '66');
$preLen++;
break;
}
$instr = new X86Mov($this->src, $this->dst);
$this->setOpcode($pre . $instr->assemble());
$this->setLen($instr->getLen() + $preLen);
} elseif ($isNumSrc && $isStrDst && $lenDst == 3) {
$mask = 0xffffffff;
$base = 0xb8;
$len = 4;
switch ($this->dst[1]) {
/*case 'a':
$base += 0;
break;*/
case 'c':
$base++;
break;
case 'd':
$base += 2;
break;
case 'b':
$base += 3;
break;
}
$this->src &= $mask;
$this->src = Num::be2le($this->src, $len);
$base <<= $len * 8;
$opcode = dechex($base | $this->src);
$opcodeLen = strlen($opcode);
$this->setOpcode(pack('H*', $opcode));
$this->setLen($opcodeLen / 2);
} elseif ($isStrSrc && $isStrDst && $lenSrc == 2 && $lenDst == 2) {
$pre = '';
$preLen = 0;
switch ($this->dst) {
case 'ax':
case 'cx':
case 'dx':
case 'bx':
$pre = pack('H*', '66');
$preLen++;
break;
}
$instr = new X86Mov($this->src, $this->dst);
$this->setOpcode($pre . $instr->assemble());
$this->setLen($instr->getLen() + $preLen);
} elseif ($isStrSrc && $isStrDst && $lenSrc == 3 && $lenDst == 3) {
if ($this->isValidRegisterSize()) {
#\Doctrine\Common\Util\Debug::dump($this->src);
$tSrc = $this->src;
$tDst = $this->dst;
$tSrc = $tSrc[1] . $tSrc[2];
$tDst = $tDst[1] . $tDst[2];
$instr = new X86Mov($tSrc, $tDst);
$this->setOpcode($instr->assemble());
$this->setLen($instr->getLen());
}
}
}
/**
* @dataProvider bit16IsValidRegisterSizeProvider
*/
public function test8086Bit16IsValidRegisterSize($src, $dst, $expected)
{
$instr = new Mov($src, $dst);
$this->assertEquals($expected, $instr->isValidRegisterSize());
}
public function __construct($src, $dst)
{
$this->src = strtolower($src);
$this->dst = strtolower($dst);
$lenSrc = strlen($this->src);
$isNumSrc = is_numeric($this->src);
$isStrSrc = is_string($this->src);
$lenDst = strlen($this->dst);
$isStrDst = is_string($this->dst);
if ($isNumSrc && $isStrDst && $lenDst == 2) {
$instr = new I386Mov($this->src, $this->dst);
$this->setOpcode($instr->assemble());
$this->setLen($instr->getLen());
} elseif ($isNumSrc && $isStrDst && $lenDst == 3) {
$base = 0;
#print "\n\nx64: ".dechex($this->src).", $dst\n";
switch ($dst[0]) {
case 'e':
#print "\t 32 bit\n";
$this->src &= 0xffffffff;
$base = 0xb8;
$this->src = Num::be2le($this->src, 4);
$this->src = dechex($this->src);
#$lenSrc = strlen($this->src);
/*if($lenSrc < 8){
$this->src = str_repeat('0', 8 - $lenSrc).$this->src;
}*/
$this->src = sprintf('%08s', $this->src);
#print "\t src: ".$this->src."\n";
break;
case 'r':
$srcHigh = $this->src >> 32 & 0xffffffff;
$srcLow = $this->src & 0xffffffff;
#print "\t 64 bit h=".dechex($srcHigh)." l=".dechex($srcLow)."\n";
if ($this->src > 0x7fffffff | $srcHigh) {
#print "\t 64 bit: 64\n";
$base = 0x48b8;
$this->src = Num::be2le($this->src, 8);
$this->src = dechex($this->src);
/*$lenSrc = strlen($this->src);
if($lenSrc < 16){
$this->src = str_repeat('0', 16 - $lenSrc).$this->src;
}*/
$this->src = sprintf('%016s', $this->src);
} else {
#print "\t 64 bit: 32\n";
$base = 0x48c7c0;
$this->src = $srcLow;
#print "\t src: ".dechex($this->src)."\n";
$this->src = Num::be2le($this->src, 4);
$this->src = dechex($this->src);
/*$lenSrc = strlen($this->src);
if($lenSrc < 8){
$this->src = str_repeat('0', 8 - $lenSrc).$this->src;
}*/
$this->src = sprintf('%08s', $this->src);
#print "\t 64 bit: ".$this->src."\n";
}
break;
}
switch ($dst[1]) {
/*case 'a':
$base += 0;
break;*/
case 'c':
$base++;
break;
case 'd':
$base += 2;
break;
case 'b':
$base += 3;
break;
}
$opcode = dechex($base) . $this->src;
$opcodeLen = strlen($opcode);
$this->setOpcode(pack('H*', $opcode));
$this->setLen($opcodeLen / 2);
} elseif ($isStrSrc && $isStrDst && $lenSrc == 2 && $lenDst == 2) {
$instr = new I386Mov($this->src, $this->dst);
$this->setOpcode($instr->assemble());
$this->setLen($instr->getLen());
} elseif ($isStrSrc && $isStrDst && $lenSrc == 3 && $lenDst == 3) {
if ($this->isValidRegisterSize($src, $dst)) {
$pre = '';
$preLen = 0;
switch ($this->src[0]) {
/*case 'e':
break;*/
case 'r':
$pre = pack('H*', '48');
$preLen++;
break;
}
$tSrc = $this->src;
$tDst = $this->dst;
$tSrc = $tSrc[1] . $tSrc[2];
$tDst = $tDst[1] . $tDst[2];
$instr = new X86Mov($tSrc, $tDst);
$this->setOpcode($pre . $instr->assemble());
$this->setLen($instr->getLen() + $preLen);
}
}
}