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1031 lines (797 loc) · 20.9 KB
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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "gamos/gamos.h"
namespace Gamos {
uint8 VM::MemAccess::getU8(uint32 address) {
if (!_currentBlock || address < _currentBlock->address || address >= (_currentBlock->address + 0x100))
_currentBlock = _vm.findMemoryBlock(address);
if (!_currentBlock)
return 0; // ERROR!
return _currentBlock->data[ address - _currentBlock->address ];
}
uint32 VM::MemAccess::getU32(uint32 address) {
if (!_currentBlock || address < _currentBlock->address || address >= (_currentBlock->address + 0x100))
_currentBlock = _vm.findMemoryBlock(address);
if (!_currentBlock)
return 0; // ERROR!
uint32 pos = address - _currentBlock->address;
if ((int32)0x100 - (int32)pos >= 4)
return VM::getU32(_currentBlock->data + pos); //easy
MemoryBlock *block = _currentBlock;
uint32 val = block->data[ pos ];
for (int i = 1; i < 4; i++) {
pos++;
if (pos >= 0x100) {
block = _vm.findMemoryBlock(address + i);
if (!block)
break;
pos = 0;
}
val |= block->data[ pos ] << (i * 8);
}
return val;
}
void VM::MemAccess::setU8(uint32 address, uint8 val) {
if (!_currentBlock || address < _currentBlock->address || address >= (_currentBlock->address + 0x100))
_currentBlock = _vm.findMemoryBlock(address);
if (!_currentBlock)
_currentBlock = _vm.createBlock(address);
_currentBlock->data[ address - _currentBlock->address ] = val;
}
void VM::MemAccess::setU32(uint32 address, uint32 val) {
if (!_currentBlock || address < _currentBlock->address || address >= (_currentBlock->address + 0x100))
_currentBlock = _vm.findMemoryBlock(address);
if (!_currentBlock)
_currentBlock = _vm.createBlock(address);
uint32 pos = address - _currentBlock->address;
if (address + 4 <= _currentBlock->address + 0x100) {
VM::setU32(_currentBlock->data + pos, val);
return;
}
MemoryBlock *block = _currentBlock;
_currentBlock->data[ pos ] = val & 0xff;
for (int i = 1; i < 4; i++) {
pos++;
if (pos >= 0x100) {
block = _vm.createBlock(address + i);
if (!block)
break;
pos = 0;
}
block->data[ pos ] = (val >> (i * 8)) & 0xff;
}
}
uint32 VM::Context::execute(uint32 scriptAddress, byte *storage) {
//Common::String disasm = disassembly(scriptAddress);
ESI = scriptAddress;
EBX = storage;
_readAccess.reset();
_writeAccess.reset();
SP = STACK_POS;
//Common::Array<OpLog> cmdlog;
bool loop = true;
while (loop) {
if (_vm._interrupt)
return 0;
byte op = _readAccess.getU8(ESI);
//cmdlog.push_back({ESI, (OP)op, SP});
ESI++;
switch (op) {
default:
case OP_EXIT:
loop = false;
break;
case OP_CMP_EQ:
if (EDX.getVal() == EAX.getVal())
EAX.setVal(1);
else
EAX.setVal(0);
break;
case OP_CMP_NE:
if (EDX.getVal() != EAX.getVal())
EAX.setVal(1);
else
EAX.setVal(0);
break;
case OP_CMP_LE:
if ((int32)EDX.getVal() < (int32)EAX.getVal())
EAX.setVal(1);
else
EAX.setVal(0);
break;
case OP_CMP_LEQ:
if ((int32)EDX.getVal() <= (int32)EAX.getVal())
EAX.setVal(1);
else
EAX.setVal(0);
break;
case OP_CMP_GR:
if ((int32)EDX.getVal() > (int32)EAX.getVal())
EAX.setVal(1);
else
EAX.setVal(0);
break;
case OP_CMP_GREQ:
if ((int32)EDX.getVal() >= (int32)EAX.getVal())
EAX.setVal(1);
else
EAX.setVal(0);
break;
case OP_CMP_NAE:
if (EDX.getVal() < EAX.getVal())
EAX.setVal(1);
else
EAX.setVal(0);
break;
case OP_CMP_NA:
if (EDX.getVal() <= EAX.getVal())
EAX.setVal(1);
else
EAX.setVal(0);
break;
case OP_CMP_A:
if (EDX.getVal() > EAX.getVal())
EAX.setVal(1);
else
EAX.setVal(0);
break;
case OP_CMP_AE:
if (EDX.getVal() >= EAX.getVal())
EAX.setVal(1);
else
EAX.setVal(0);
break;
case OP_BRANCH:
if (EAX.getVal() != 0)
ESI += 4;
else
ESI += (int32)_readAccess.getU32(ESI);
break;
case OP_JMP:
ESI += (int32)_readAccess.getU32(ESI);
break;
case OP_SP_ADD:
SP += (int32)_readAccess.getU32(ESI);
ESI += 4;
break;
case OP_MOV_EDI_ECX_AL:
setMem8(REF_EDI, _readAccess.getU32(ESI), EAX.getVal() & 0xff);
ESI += 4;
break;
case OP_MOV_EBX_ECX_AL:
setMem8(REF_EBX, _readAccess.getU32(ESI), EAX.getVal() & 0xff);
ESI += 4;
break;
case OP_MOV_EDI_ECX_EAX:
setMem32(REF_EDI, _readAccess.getU32(ESI), EAX.getVal());
ESI += 4;
break;
case OP_MOV_EBX_ECX_EAX:
setMem32(REF_EBX, _readAccess.getU32(ESI), EAX.getVal());
ESI += 4;
break;
case OP_RET:
ESI = pop32();
ESI += 4;
break;
case OP_RETX:
ECX = popReg();
SP += _readAccess.getU32(ESI);
ESI = ECX.getVal();
ESI += 4;
break;
case OP_MOV_EDX_EAX:
EDX = EAX;
break;
case OP_ADD_EAX_EDX:
EAX.setVal(EAX.getVal() + EDX.getVal());
break;
case OP_MUL:
EAX.setVal(EAX.getVal() * EDX.getVal());
break;
case OP_OR:
EAX.setVal(EAX.getVal() | EDX.getVal());
break;
case OP_XOR:
EAX.setVal(EAX.getVal() ^ EDX.getVal());
break;
case OP_AND:
EAX.setVal(EAX.getVal() & EDX.getVal());
break;
case OP_NEG:
EAX.setVal((uint32)(-(int32)EAX.getVal()));
break;
case OP_SAR:
EAX.setVal((int32)EDX.getVal() >> (EAX.getVal() & 0xff)); /* must be arythmetic shift! */
break;
case OP_SHL:
EAX.setVal(EDX.getVal() << (EAX.getVal() & 0xff));
break;
case OP_LOAD:
EAX.setVal( _readAccess.getU32(ESI) );
ESI += 4;
break;
case OP_INC:
EAX.setVal( EAX.getVal() + 1 );
break;
case OP_DEC:
EAX.setVal( EAX.getVal() - 1 );
break;
case OP_XCHG:
ECX = EAX;
EAX = EDX;
EDX = ECX;
break;
case OP_PUSH_EAX:
pushReg(EAX);
break;
case OP_POP_EDX:
EDX = popReg();
break;
case OP_LOAD_OFFSET_EDI:
case OP_LOAD_OFFSET_EDI2:
EAX.setAddress(REF_EDI, _readAccess.getU32(ESI));
ESI += 4;
break;
case OP_LOAD_OFFSET_EBX:
EAX.setAddress(REF_EBX, _readAccess.getU32(ESI));
ESI += 4;
break;
case OP_LOAD_OFFSET_ESP:
EAX.setAddress(REF_STACK, _readAccess.getU32(ESI) + SP);
ESI += 4;
break;
case OP_MOV_PTR_EDX_AL:
setMem8(EDX, EAX.getVal() & 0xff);
break;
case OP_MOV_PTR_EDX_EAX:
setMem32(EDX, EAX.getVal());
break;
case OP_SHL_2:
EAX.setVal( EAX.getVal() << 2 );
break;
case OP_ADD_4:
EAX.setVal( EAX.getVal() + 4 );
break;
case OP_SUB_4:
EAX.setVal( EAX.getVal() - 4 );
break;
case OP_XCHG_ESP:
ECX = popReg();
pushReg(EAX);
EAX = ECX;
break;
case OP_NEG_ADD:
EAX.setVal( (-(int32)EAX.getVal()) + EDX.getVal() );
break;
case OP_DIV:
ECX = EAX;
EAX.setVal( (int32)EDX.getVal() / (int32)ECX.getVal() );
EDX.setVal( (int32)EDX.getVal() % (int32)ECX.getVal() );
break;
case OP_MOV_EAX_BPTR_EDI:
EAX.setVal( (int32)((int8)getMem8(REF_EDI, _readAccess.getU32(ESI))) );
ESI += 4;
break;
case OP_MOV_EAX_BPTR_EBX:
EAX.setVal( (int32)((int8)getMem8(REF_EBX, _readAccess.getU32(ESI))) );
ESI += 4;
break;
case OP_MOV_EAX_DPTR_EDI:
EAX.setVal( getMem32(REF_EDI, _readAccess.getU32(ESI)) );
ESI += 4;
break;
case OP_MOV_EAX_DPTR_EBX:
EAX.setVal( getMem32(REF_EBX, _readAccess.getU32(ESI)) );
ESI += 4;
break;
case OP_MOV_EAX_BPTR_EAX:
EAX.setVal( (int32)( (int8)getMem8(EAX) ) );
break;
case OP_MOV_EAX_DPTR_EAX:
EAX.setVal( getMem32(EAX) );
break;
case OP_PUSH_ESI_ADD_EDI:
push32(ESI);
ESI = _readAccess.getU32(ESI);
break;
case OP_CALL_FUNC:
EAX.setVal( _readAccess.getU32(ESI) );
ESI += 4;
if (_vm._callFuncs)
_vm._callFuncs(_vm._callingObject, this, EAX.getVal());
break;
case OP_PUSH_ESI_SET_EDX_EDI:
push32(ESI);
ESI = EDX.getVal();
break;
}
}
return EAX.getVal();
}
uint32 VM::doScript(uint32 scriptAddress, byte *storage) {
if (_interrupt)
return 0;
for (int i = 0; i < THREADS_COUNT; i++) {
if (!_threads[i]._inUse) {
_threads[i]._inUse = true;
uint32 res = _threads[i].execute(scriptAddress, storage);
_threads[i]._inUse = false;
return res;
}
}
Context *tmpcontext = new Context(*this);
uint32 res = tmpcontext->execute(scriptAddress, storage);
delete tmpcontext;
return res;
}
int32 VM::getS32(const void *mem) {
const uint8 *mem8 = (const uint8 *)mem;
return (int32)(mem8[0] | (mem8[1] << 8) | (mem8[2] << 16) | (mem8[3] << 24));
}
uint32 VM::getU32(const void *mem) {
const uint8 *mem8 = (const uint8 *)mem;
return (uint32)(mem8[0] | (mem8[1] << 8) | (mem8[2] << 16) | (mem8[3] << 24));
}
void VM::setU32(void *mem, uint32 val) {
uint8 *mem8 = (uint8 *)mem;
mem8[0] = val & 0xff;
mem8[1] = (val >> 8) & 0xff;
mem8[2] = (val >> 16) & 0xff;
mem8[3] = (val >> 24) & 0xff;
}
void VM::Context::push32(uint32 val) {
SP -= 4;
setU32(_stack + SP, val);
}
uint32 VM::Context::pop32() {
uint32 val = getU32(_stack + SP);
SP += 4;
return val;
}
void VM::Context::pushReg(ValAddr reg) {
SP -= 4;
setU32(_stack + SP, reg.getVal());
}
VM::ValAddr VM::Context::popReg() {
ValAddr tmp;
tmp.setVal( getU32(_stack + SP) );
SP += 4;
return tmp;
}
uint32 VM::Context::getMem32(int memtype, uint32 offset) {
switch (memtype) {
default:
case REF_UNK:
return 0; // Set here breakpoint for find what is going wrong
case REF_STACK:
return getU32(_stack + offset);
case REF_EBX:
return getU32(EBX + offset);
case REF_EDI:
return _readAccess.getU32(offset);
}
}
uint32 VM::Context::getMem32(const ValAddr &addr) {
return getMem32(addr.getMemType(), addr.getOffset());
}
uint8 VM::Context::getMem8(int memtype, uint32 offset) {
switch (memtype) {
default:
case REF_UNK:
return 0; // Set here breakpoint for find what is going wrong
case REF_STACK:
return _stack[offset];
case REF_EBX:
return EBX[offset];
case REF_EDI:
return _readAccess.getU8(offset);
}
}
uint8 VM::Context::getMem8(const ValAddr &addr) {
return getMem8(addr.getMemType(), addr.getOffset());
}
void VM::Context::setMem32(int memtype, uint32 offset, uint32 val) {
switch (memtype) {
default:
case REF_UNK:
break; // Set here breakpoint for find what is going wrong
case REF_STACK:
setU32(_stack + offset, val);
break;
case REF_EBX:
setU32(EBX + offset, val);
break;
case REF_EDI:
_writeAccess.setU32(offset, val);
break;
}
}
void VM::Context::setMem32(const ValAddr &addr, uint32 val) {
setMem32(addr.getMemType(), addr.getOffset(), val);
}
void VM::Context::setMem8(int memtype, uint32 offset, uint8 val) {
switch (memtype) {
default:
case REF_UNK:
break; // Set here breakpoint for find what is going wrong
case REF_STACK:
_stack[offset] = val;
break;
case REF_EBX:
EBX[offset] = val;
break;
case REF_EDI:
_writeAccess.setU8(offset, val);
break;
}
}
void VM::Context::setMem8(const ValAddr &addr, uint8 val) {
setMem8(addr.getMemType(), addr.getOffset(), val);
}
void VM::clearMemory() {
_memMap.clear();
_memAccess.reset();
}
void VM::writeMemory(uint32 address, const byte* data, uint32 dataSize) {
uint32 blockAddr = address & (~0xff);
uint32 pos = 0;
uint32 remain = dataSize;
//warning("Write memory at %x sz %x", address, dataSize);
for (uint32 addr = blockAddr; addr < address + dataSize; addr += 0x100) {
MemoryBlock &block = _memMap.getOrCreateVal(addr);
block.address = addr; // update it
uint32 copyCnt = (addr + 0x100) - (address + pos);
if (copyCnt > remain)
copyCnt = remain;
uint32 blockPos = (address + pos) - addr;
memcpy(block.data + blockPos, data + pos, copyCnt);
pos += copyCnt;
remain -= copyCnt;
}
}
void VM::zeroMemory(uint32 address, uint32 count) {
uint32 blockAddr = address & (~0xff);
uint32 pos = 0;
uint32 remain = count;
for (uint32 addr = blockAddr; addr < address + count; addr += 0x100) {
MemoryBlock *block = findMemoryBlock(addr);
uint32 zeroCnt = (addr + 0x100) - (address + pos);
if (zeroCnt > remain)
zeroCnt = remain;
uint32 blockPos = (address + pos) - addr;
if (block)
memset(block->data + blockPos, 0, zeroCnt);
pos += zeroCnt;
remain -= zeroCnt;
}
}
VM::MemoryBlock *VM::findMemoryBlock(uint32 address) {
Common::HashMap<uint32, MemoryBlock>::iterator it = _memMap.find(address & (~0xff));
if (it == _memMap.end())
return nullptr;
return &it->_value;
}
VM::MemoryBlock *VM::createBlock(uint32 address) {
MemoryBlock &blk = _memMap.getOrCreateVal(address & (~0xff));
blk.address = address & (~0xff);
return &blk;
}
Common::Array<byte> VM::readMemBlocks(uint32 address, uint32 count) {
Common::Array<byte> data(count);
readMemBlocks(data.data(), address, count);
return data;
}
void VM::readMemBlocks(byte *dst, uint32 address, uint32 count) {
MemoryBlock *blk = findMemoryBlock(address);
uint32 pos = 0;
uint32 blockAddr = address & (~0xff);
uint32 remain = count;
while (remain > 0) {
uint32 dataCpyCount = (blockAddr + 0x100) - (address + pos);
if (dataCpyCount > remain)
dataCpyCount = remain;
if (!blk) {
memset(dst + pos, 0, dataCpyCount);
} else {
memcpy(dst + pos, blk->data + (address + pos - blk->address), dataCpyCount);
}
pos += dataCpyCount;
remain -= dataCpyCount;
blockAddr += 0x100;
blk = findMemoryBlock(blockAddr);
}
}
Common::String VM::readMemString(uint32 address, uint32 maxLen) {
Common::String s;
MemoryBlock *blk = findMemoryBlock(address);
if (!blk)
return s;
uint32 pos = address - blk->address;
char c = blk->data[pos];
while (c != 0) {
s += c;
pos++;
if (pos >= 0x100) {
blk = findMemoryBlock(blk->address + 0x100);
pos = 0;
}
if (!blk)
break;
c = blk->data[pos];
}
return s;
}
Common::String VM::Context::getString(int memtype, uint32 offset, uint32 maxLen) {
switch (memtype) {
default:
case REF_UNK:
return Common::String();
case REF_STACK: {
Common::String s = Common::String((const char *)_stack + offset);
if (s.size() > maxLen)
s.erase(maxLen);
return s;
}
case REF_EBX: {
Common::String s = Common::String((const char *)EBX + offset);
if (s.size() > maxLen)
s.erase(maxLen);
return s;
}
case REF_EDI:
return _vm.readMemString(offset, maxLen);
}
}
Common::String VM::Context::getString(const ValAddr &addr, uint32 maxLen) {
return getString(addr.getMemType(), addr.getOffset(), maxLen);
}
Common::String VM::decodeOp(uint32 address, int *size) {
Common::String tmp;
MemAccess readmem(*this);
int sz = 1;
byte op = readmem.getU8(address);
address++;
switch (op) {
default:
case OP_EXIT:
tmp = Common::String("EXIT");
break;
case OP_CMP_EQ:
tmp = Common::String("EAX = EDX == EAX (CMP_EQ)");
break;
case OP_CMP_NE:
tmp = Common::String("EAX = EDX != EAX (CMP_NE)");
break;
case OP_CMP_LE:
tmp = Common::String("EAX = EDX < EAX (CMP_LE) //signed");
break;
case OP_CMP_LEQ:
tmp = Common::String("EAX = EDX <= EAX (CMP_LEQ) //signed");
break;
case OP_CMP_GR:
tmp = Common::String("EAX = EDX > EAX (CMP_GR) //signed");
break;
case OP_CMP_GREQ:
tmp = Common::String("EAX = EDX >= EAX (CMP_GREQ) //signed");
break;
case OP_CMP_NAE:
tmp = Common::String("EAX = EDX < EAX (CMP_NAE) //unsigned");
break;
case OP_CMP_NA:
tmp = Common::String("EAX = EDX <= EAX (CMP_NA) //unsigned");
break;
case OP_CMP_A:
tmp = Common::String("EAX = EDX > EAX (CMP_A) //unsigned");
break;
case OP_CMP_AE:
tmp = Common::String("EAX = EDX >= EAX (CMP_AE) //unsigned");
break;
case OP_BRANCH:
tmp = Common::String::format("BR %x", address + (int32)readmem.getU32(address));
sz += 4;
break;
case OP_JMP:
tmp = Common::String::format("JMP %x", address + (int32)readmem.getU32(address));
sz += 4;
break;
case OP_SP_ADD:
tmp = Common::String::format("ADD SP, %x", (int32)readmem.getU32(address));
sz += 4;
break;
case OP_MOV_EDI_ECX_AL:
tmp = Common::String::format("MOV byte ptr[EDI + %x], AL", (int32)readmem.getU32(address));
sz += 4;
break;
case OP_MOV_EBX_ECX_AL:
tmp = Common::String::format("MOV byte ptr[EBX + %x], AL", (int32)readmem.getU32(address));
sz += 4;
break;
case OP_MOV_EDI_ECX_EAX:
tmp = Common::String::format("MOV dword ptr[EDI + %x], EAX", (int32)readmem.getU32(address));
sz += 4;
break;
case OP_MOV_EBX_ECX_EAX:
tmp = Common::String::format("MOV dword ptr[EBX + %x], EAX", (int32)readmem.getU32(address));
sz += 4;
break;
case OP_RET:
tmp = Common::String("RET");
break;
case OP_RETX:
tmp = Common::String::format("RET%x", readmem.getU32(address));
sz += 4;
break;
case OP_MOV_EDX_EAX:
tmp = Common::String("MOV EDX, EAX");
break;
case OP_ADD_EAX_EDX:
tmp = Common::String("ADD EAX, EDX");
break;
case OP_MUL:
tmp = Common::String("MUL EDX");
break;
case OP_OR:
tmp = Common::String("OR EDX");
break;
case OP_XOR:
tmp = Common::String("XOR EDX");
break;
case OP_AND:
tmp = Common::String("AND EDX");
break;
case OP_NEG:
tmp = Common::String("NEG EAX");
break;
case OP_SAR:
tmp = Common::String("SAR EAX, EDX,EAX // edx>>eax");
break;
case OP_SHL:
tmp = Common::String("SHL EAX, EDX,EAX // edx<<eax");
break;
case OP_LOAD:
tmp = Common::String::format("MOV EAX, %x", readmem.getU32(address));
sz += 4;
break;
case OP_INC:
tmp = Common::String("INC EAX");
break;
case OP_DEC:
tmp = Common::String("DEC EAX");
break;
case OP_XCHG:
tmp = Common::String("XCHG EAX,EDX");
break;
case OP_PUSH_EAX:
tmp = Common::String("PUSH EAX");
break;
case OP_POP_EDX:
tmp = Common::String("POP EDX");
break;
case OP_LOAD_OFFSET_EDI:
case OP_LOAD_OFFSET_EDI2:
tmp = Common::String::format("LEA EAX, [EDI + %x]", readmem.getU32(address));
sz += 4;
break;
case OP_LOAD_OFFSET_EBX:
tmp = Common::String::format("LEA EAX, [EBX + %x]", readmem.getU32(address));
sz += 4;
break;
case OP_LOAD_OFFSET_ESP:
tmp = Common::String::format("LEA EAX, [SP + %x]", readmem.getU32(address));
sz += 4;
break;
case OP_MOV_PTR_EDX_AL:
tmp = Common::String("MOV byte ptr [EDX], AL");
break;
case OP_MOV_PTR_EDX_EAX:
tmp = Common::String("MOV dword ptr [EDX], EAX");
break;
case OP_SHL_2:
tmp = Common::String("SHL EAX, 2");
break;
case OP_ADD_4:
tmp = Common::String("ADD EAX, 4");
break;
case OP_SUB_4:
tmp = Common::String("SUB EAX, 4");
break;
case OP_XCHG_ESP:
tmp = Common::String("XCHG EAX, [SP]");
break;
case OP_NEG_ADD:
tmp = Common::String("EAX = EDX - EAX (OP_NEG_ADD)");
break;
case OP_DIV:
tmp = Common::String("EAX = EDX / EAX | EDX = EDX %% EAX (DIV)");
break;
case OP_MOV_EAX_BPTR_EDI:
tmp = Common::String::format("MOV EAX, byte ptr [EDI + %x]", readmem.getU32(address));
sz += 4;
break;
case OP_MOV_EAX_BPTR_EBX:
tmp = Common::String::format("MOV EAX, byte ptr [EBX + %x]", readmem.getU32(address));
sz += 4;
break;
case OP_MOV_EAX_DPTR_EDI:
tmp = Common::String::format("MOV EAX, dword ptr [EDI + %x]", readmem.getU32(address));
sz += 4;
break;
case OP_MOV_EAX_DPTR_EBX:
tmp = Common::String::format("MOV EAX, dword ptr [EBX + %x]", readmem.getU32(address));
sz += 4;
break;
case OP_MOV_EAX_BPTR_EAX:
tmp = Common::String("MOV EAX, byte ptr [EAX]");
break;
case OP_MOV_EAX_DPTR_EAX:
tmp = Common::String("MOV EAX, dword ptr [EAX]");
break;
case OP_PUSH_ESI_ADD_EDI:
tmp = Common::String::format("CALL %x", readmem.getU32(address));
sz += 4;
break;
case OP_CALL_FUNC:
tmp = Common::String::format("CALL FUNC %d", readmem.getU32(address));
sz += 4;
break;
case OP_PUSH_ESI_SET_EDX_EDI:
tmp = Common::String("CALL EDX");
break;
}
if (size)
*size = sz;
return tmp;
}
Common::String VM::disassembly(uint32 address) {
Common::String tmp;
uint32 addr = address;
MemAccess readmem(*this);
while (true) {
tmp += Common::String::format("%08x: ", addr);
byte op = readmem.getU8(addr);
int sz = 1;
tmp += decodeOp(addr, &sz);
tmp += "\n";
addr += sz;
if (op == OP_EXIT)