int DisassemblerX64::PrintRightOperandHelper(
byte* modrmp,
- RegisterNameMapping register_name) {
+ RegisterNameMapping direct_register_name) {
int mod, regop, rm;
get_modrm(*modrmp, &mod, ®op, &rm);
+ RegisterNameMapping register_name = (mod == 3) ? direct_register_name :
+ &DisassemblerX64::NameOfCPURegister;
switch (mod) {
case 0:
if ((rm & 7) == 5) {
} else if (opcode == 0x6F) {
AppendToBuffer("movdqa %s,",
NameOfXMMRegister(regop));
- current += PrintRightOperand(current);
+ current += PrintRightXMMOperand(current);
} else if (opcode == 0x7E) {
AppendToBuffer("mov%c ",
rex_w() ? 'q' : 'd');
AppendToBuffer(", %s", NameOfXMMRegister(regop));
} else if (opcode == 0x7F) {
AppendToBuffer("movdqa ");
- current += PrintRightOperand(current);
+ current += PrintRightXMMOperand(current);
AppendToBuffer(", %s", NameOfXMMRegister(regop));
} else {
const char* mnemonic = "?";
int mod, regop, rm;
get_modrm(*current, &mod, ®op, &rm);
if (opcode == 0x11) {
- current += PrintRightOperand(current);
+ current += PrintRightXMMOperand(current);
AppendToBuffer(",%s", NameOfXMMRegister(regop));
} else {
AppendToBuffer("%s,", NameOfXMMRegister(regop));
- current += PrintRightOperand(current);
+ current += PrintRightXMMOperand(current);
}
} else if (opcode == 0x2A) {
// CVTSI2SD: integer to XMM double conversion.
{
bool is_byte = *data == 0xC6;
data++;
-
- AppendToBuffer("mov%c ", is_byte ? 'b' : operand_size_code());
- data += PrintRightOperand(data);
- int32_t imm = is_byte ? *data : *reinterpret_cast<int32_t*>(data);
- AppendToBuffer(",0x%x", imm);
- data += is_byte ? 1 : 4;
+ if (is_byte) {
+ AppendToBuffer("movb ");
+ data += PrintRightByteOperand(data);
+ int32_t imm = *data;
+ AppendToBuffer(",0x%x", imm);
+ data++;
+ } else {
+ AppendToBuffer("mov%c ", operand_size_code());
+ data += PrintRightOperand(data);
+ int32_t imm = *reinterpret_cast<int32_t*>(data);
+ AppendToBuffer(",0x%x", imm);
+ data += 4;
+ }
}
break;
case 0x80: {
data++;
AppendToBuffer("cmpb ");
- data += PrintRightOperand(data);
+ data += PrintRightByteOperand(data);
int32_t imm = *data;
AppendToBuffer(",0x%x", imm);
data++;
int mod, regop, rm;
data++;
get_modrm(*data, &mod, ®op, &rm);
- AppendToBuffer("mov%c ", is_byte ? 'b' : operand_size_code());
- data += PrintRightOperand(data);
- AppendToBuffer(",%s", NameOfCPURegister(regop));
+ if (is_byte) {
+ AppendToBuffer("movb ");
+ data += PrintRightByteOperand(data);
+ AppendToBuffer(",%s", NameOfByteCPURegister(regop));
+ } else {
+ AppendToBuffer("mov%c ", operand_size_code());
+ data += PrintRightOperand(data);
+ AppendToBuffer(",%s", NameOfCPURegister(regop));
+ }
}
break;
get_modrm(*data, &mod, ®op, &rm);
if (regop == 1) {
AppendToBuffer("decb ");
- data += PrintRightOperand(data);
+ data += PrintRightByteOperand(data);
} else {
UnimplementedInstruction();
}