diff options
Diffstat (limited to 'org.fox.ttcomics/src/main/java/com/github/junrar/unpack/vm/RarVM.java')
| -rw-r--r-- | org.fox.ttcomics/src/main/java/com/github/junrar/unpack/vm/RarVM.java | 1221 |
1 files changed, 1221 insertions, 0 deletions
diff --git a/org.fox.ttcomics/src/main/java/com/github/junrar/unpack/vm/RarVM.java b/org.fox.ttcomics/src/main/java/com/github/junrar/unpack/vm/RarVM.java new file mode 100644 index 0000000..e6e6a01 --- /dev/null +++ b/org.fox.ttcomics/src/main/java/com/github/junrar/unpack/vm/RarVM.java @@ -0,0 +1,1221 @@ +/*
+ * Copyright (c) 2007 innoSysTec (R) GmbH, Germany. All rights reserved.
+ * Original author: Edmund Wagner
+ * Creation date: 31.05.2007
+ *
+ * Source: $HeadURL$
+ * Last changed: $LastChangedDate$
+ *
+ * the unrar licence applies to all junrar source and binary distributions
+ * you are not allowed to use this source to re-create the RAR compression algorithm
+ *
+ * Here some html entities which can be used for escaping javadoc tags:
+ * "&": "&" or "&"
+ * "<": "<" or "<"
+ * ">": ">" or ">"
+ * "@": "@"
+ */
+package com.github.junrar.unpack.vm;
+
+import java.util.List;
+import java.util.Vector;
+
+import com.github.junrar.crc.RarCRC;
+import com.github.junrar.io.Raw;
+
+
+/**
+ * DOCUMENT ME
+ *
+ * @author $LastChangedBy$
+ * @version $LastChangedRevision$
+ */
+public class RarVM extends BitInput {
+
+ public static final int VM_MEMSIZE = 0x40000;
+
+ public static final int VM_MEMMASK = (VM_MEMSIZE - 1);
+
+ public static final int VM_GLOBALMEMADDR = 0x3C000;
+
+ public static final int VM_GLOBALMEMSIZE = 0x2000;
+
+ public static final int VM_FIXEDGLOBALSIZE = 64;
+
+ private static final int regCount = 8;
+
+ private static final long UINT_MASK = 0xffffFFFF;//((long)2*(long)Integer.MAX_VALUE);
+
+ private byte[] mem;
+
+ private int[] R = new int[regCount];
+
+ private int flags;
+
+ private int maxOpCount = 25000000;
+
+ private int codeSize;
+
+ private int IP;
+
+ public RarVM() {
+ mem = null;
+ }
+
+ public void init() {
+ if (mem == null) {
+ mem = new byte[VM_MEMSIZE + 4];
+ }
+ }
+
+ private boolean isVMMem(byte[] mem) {
+ return this.mem == mem;
+ }
+
+ private int getValue(boolean byteMode, byte[] mem, int offset) {
+ if (byteMode) {
+ if (isVMMem(mem)) {
+ return (mem[offset]);
+ } else {
+ return (mem[offset] & 0xff);
+ }
+ } else {
+ if (isVMMem(mem)) {
+ //little
+ return Raw.readIntLittleEndian(mem, offset);
+ } else
+ //big endian
+ return Raw.readIntBigEndian(mem, offset);
+ }
+ }
+
+ private void setValue(boolean byteMode, byte[] mem, int offset, int value) {
+ if (byteMode) {
+ if (isVMMem(mem)) {
+ mem[offset] = (byte) value;
+ } else {
+ mem[offset] = (byte) ((mem[offset] & 0x00) | (byte) (value & 0xff));
+ }
+ } else {
+ if (isVMMem(mem)) {
+ Raw.writeIntLittleEndian(mem, offset, value);
+// mem[offset + 0] = (byte) value;
+// mem[offset + 1] = (byte) (value >>> 8);
+// mem[offset + 2] = (byte) (value >>> 16);
+// mem[offset + 3] = (byte) (value >>> 24);
+ } else {
+ Raw.writeIntBigEndian(mem, offset, value);
+// mem[offset + 3] = (byte) value;
+// mem[offset + 2] = (byte) (value >>> 8);
+// mem[offset + 1] = (byte) (value >>> 16);
+// mem[offset + 0] = (byte) (value >>> 24);
+ }
+
+ }
+ // #define SET_VALUE(ByteMode,Addr,Value) SetValue(ByteMode,(uint
+ // *)Addr,Value)
+ }
+
+ public void setLowEndianValue(byte[] mem, int offset, int value) {
+ Raw.writeIntLittleEndian(mem, offset, value);
+// mem[offset + 0] = (byte) (value&0xff);
+// mem[offset + 1] = (byte) ((value >>> 8)&0xff);
+// mem[offset + 2] = (byte) ((value >>> 16)&0xff);
+// mem[offset + 3] = (byte) ((value >>> 24)&0xff);
+ }
+ public void setLowEndianValue(Vector<Byte> mem, int offset, int value) {
+ mem.set(offset + 0, Byte.valueOf((byte) (value&0xff))) ;
+ mem.set(offset + 1, Byte.valueOf((byte) ((value >>> 8)&0xff)));
+ mem.set(offset + 2, Byte.valueOf((byte) ((value >>> 16)&0xff) ));
+ mem.set(offset + 3, Byte.valueOf((byte) ((value >>> 24)&0xff))) ;
+ }
+ private int getOperand(VMPreparedOperand cmdOp) {
+ int ret = 0;
+ if (cmdOp.getType() == VMOpType.VM_OPREGMEM) {
+ int pos = (cmdOp.getOffset() + cmdOp.getBase()) & VM_MEMMASK;
+ ret = Raw.readIntLittleEndian(mem, pos);
+ } else {
+ int pos = cmdOp.getOffset();
+ ret = Raw.readIntLittleEndian(mem, pos);
+ }
+ return ret;
+ }
+
+ public void execute(VMPreparedProgram prg) {
+ for (int i = 0; i < prg.getInitR().length; i++) // memcpy(R,Prg->InitR,sizeof(Prg->InitR));
+ {
+ R[i] = prg.getInitR()[i];
+ }
+
+ long globalSize = Math
+ .min(prg.getGlobalData().size(), VM_GLOBALMEMSIZE) & 0xffFFffFF;
+ if (globalSize != 0) {
+ for (int i = 0; i < globalSize; i++) // memcpy(Mem+VM_GLOBALMEMADDR,&Prg->GlobalData[0],GlobalSize);
+ {
+ mem[VM_GLOBALMEMADDR + i] = prg.getGlobalData().get(i);
+ }
+
+ }
+ long staticSize = Math.min(prg.getStaticData().size(), VM_GLOBALMEMSIZE
+ - globalSize) & 0xffFFffFF;
+ if (staticSize != 0) {
+ for (int i = 0; i < staticSize; i++) // memcpy(Mem+VM_GLOBALMEMADDR+GlobalSize,&Prg->StaticData[0],StaticSize);
+ {
+ mem[VM_GLOBALMEMADDR + (int) globalSize + i] = prg
+ .getStaticData().get(i);
+ }
+
+ }
+ R[7] = VM_MEMSIZE;
+ flags = 0;
+
+ List<VMPreparedCommand> preparedCode = prg.getAltCmd().size() != 0 ? prg
+ .getAltCmd()
+ : prg.getCmd();
+
+ if (!ExecuteCode(preparedCode, prg.getCmdCount())) {
+ preparedCode.get(0).setOpCode(VMCommands.VM_RET);
+ }
+ int newBlockPos = getValue(false, mem, VM_GLOBALMEMADDR + 0x20)
+ & VM_MEMMASK;
+ int newBlockSize = getValue(false, mem, VM_GLOBALMEMADDR + 0x1c)
+ & VM_MEMMASK;
+ if ((newBlockPos + newBlockSize) >= VM_MEMSIZE) {
+ newBlockPos = 0;
+ newBlockSize = 0;
+ }
+
+ prg.setFilteredDataOffset(newBlockPos);
+ prg.setFilteredDataSize(newBlockSize);
+
+ prg.getGlobalData().clear();
+
+ int dataSize = Math.min(getValue(false, mem, VM_GLOBALMEMADDR + 0x30),
+ VM_GLOBALMEMSIZE - VM_FIXEDGLOBALSIZE);
+ if (dataSize != 0) {
+ prg.getGlobalData().setSize(dataSize + VM_FIXEDGLOBALSIZE);
+ // ->GlobalData.Add(dataSize+VM_FIXEDGLOBALSIZE);
+
+ for (int i = 0; i < dataSize + VM_FIXEDGLOBALSIZE; i++) // memcpy(&Prg->GlobalData[0],&Mem[VM_GLOBALMEMADDR],DataSize+VM_FIXEDGLOBALSIZE);
+ {
+ prg.getGlobalData().set(i, mem[VM_GLOBALMEMADDR + i]);
+ }
+ }
+ }
+
+ public byte[] getMem()
+ {
+ return mem;
+ }
+
+ private boolean setIP(int ip) {
+ if ((ip) >= codeSize) {
+ return (true);
+ }
+
+ if (--maxOpCount <= 0) {
+ return (false);
+ }
+
+ IP = ip;
+ return true;
+ }
+
+ private boolean ExecuteCode(List<VMPreparedCommand> preparedCode,
+ int cmdCount) {
+
+ maxOpCount = 25000000;
+ this.codeSize = cmdCount;
+ this.IP = 0;
+
+ while (true) {
+ VMPreparedCommand cmd = preparedCode.get(IP);
+ int op1 = getOperand(cmd.getOp1());
+ int op2 = getOperand(cmd.getOp2());
+ switch (cmd.getOpCode()) {
+ case VM_MOV:
+ setValue(cmd.isByteMode(), mem, op1, getValue(cmd.isByteMode(),
+ mem, op2)); // SET_VALUE(Cmd->ByteMode,Op1,GET_VALUE(Cmd->ByteMode,Op2));
+ break;
+ case VM_MOVB:
+ setValue(true, mem, op1, getValue(true, mem, op2));
+ break;
+ case VM_MOVD:
+ setValue(false, mem, op1, getValue(false, mem, op2));
+ break;
+
+ case VM_CMP: {
+ int value1 = getValue(cmd.isByteMode(), mem, op1);
+ int result = value1 - getValue(cmd.isByteMode(), mem, op2);
+
+ if (result == 0) {
+ flags = VMFlags.VM_FZ.getFlag();
+ } else {
+ flags = (result > value1) ? 1 : 0 | (result & VMFlags.VM_FS
+ .getFlag());
+ }
+ }
+ break;
+
+ case VM_CMPB: {
+ int value1 = getValue(true, mem, op1);
+ int result = value1 - getValue(true, mem, op2);
+ if (result == 0) {
+ flags = VMFlags.VM_FZ.getFlag();
+ } else {
+ flags = (result > value1) ? 1 : 0 | (result & VMFlags.VM_FS
+ .getFlag());
+ }
+ }
+ break;
+ case VM_CMPD: {
+ int value1 = getValue(false, mem, op1);
+ int result = value1 - getValue(false, mem, op2);
+ if (result == 0) {
+ flags = VMFlags.VM_FZ.getFlag();
+ } else {
+ flags = (result > value1) ? 1 : 0 | (result & VMFlags.VM_FS
+ .getFlag());
+ }
+ }
+ break;
+
+ case VM_ADD: {
+ int value1 = getValue(cmd.isByteMode(), mem, op1);
+ int result = (int) ((((long) value1 + (long) getValue(cmd
+ .isByteMode(), mem, op2))) & 0xffffffff);
+ if (cmd.isByteMode()) {
+ result &= 0xff;
+ flags = (result < value1) ? 1
+ : 0 | (result == 0 ? VMFlags.VM_FZ.getFlag()
+ : ((result & 0x80) != 0) ? VMFlags.VM_FS
+ .getFlag() : 0);
+ // Flags=(Result<Value1)|(Result==0 ? VM_FZ:((Result&0x80) ?
+ // VM_FS:0));
+ } else
+ flags = (result < value1) ? 1
+ : 0 | (result == 0 ? VMFlags.VM_FZ.getFlag()
+ : (result & VMFlags.VM_FS.getFlag()));
+ setValue(cmd.isByteMode(), mem, op1, result);
+ }
+ break;
+
+ case VM_ADDB:
+ setValue(true, mem, op1,
+ (int) ((long) getValue(true, mem, op1) & 0xFFffFFff
+ + (long) getValue(true, mem, op2) & 0xFFffFFff));
+ break;
+ case VM_ADDD:
+ setValue(
+ false,
+ mem,
+ op1,
+ (int) ((long) getValue(false, mem, op1) & 0xFFffFFff
+ + (long) getValue(false, mem, op2) & 0xFFffFFff));
+ break;
+
+ case VM_SUB: {
+ int value1 = getValue(cmd.isByteMode(), mem, op1);
+ int result = (int) ((long) value1 & 0xffFFffFF
+ - (long) getValue(cmd.isByteMode(), mem, op2) & 0xFFffFFff);
+ flags = (result == 0) ? VMFlags.VM_FZ.getFlag()
+ : (result > value1) ? 1 : 0 | (result & VMFlags.VM_FS
+ .getFlag());
+ setValue(cmd.isByteMode(), mem, op1, result);// (Cmd->ByteMode,Op1,Result);
+ }
+ break;
+
+ case VM_SUBB:
+ setValue(true, mem, op1,
+ (int) ((long) getValue(true, mem, op1) & 0xFFffFFff
+ - (long) getValue(true, mem, op2) & 0xFFffFFff));
+ break;
+ case VM_SUBD:
+ setValue(
+ false,
+ mem,
+ op1,
+ (int) ((long) getValue(false, mem, op1) & 0xFFffFFff
+ - (long) getValue(false, mem, op2) & 0xFFffFFff));
+ break;
+
+ case VM_JZ:
+ if ((flags & VMFlags.VM_FZ.getFlag()) != 0) {
+ setIP(getValue(false, mem, op1));
+ continue;
+ }
+ break;
+ case VM_JNZ:
+ if ((flags & VMFlags.VM_FZ.getFlag()) == 0) {
+ setIP(getValue(false, mem, op1));
+ continue;
+ }
+ break;
+ case VM_INC: {
+ int result = (int) ((long) getValue(cmd.isByteMode(), mem, op1) & 0xFFffFFff + 1);
+ if (cmd.isByteMode()) {
+ result &= 0xff;
+ }
+
+ setValue(cmd.isByteMode(), mem, op1, result);
+ flags = result == 0 ? VMFlags.VM_FZ.getFlag() : result
+ & VMFlags.VM_FS.getFlag();
+ }
+ break;
+
+ case VM_INCB:
+ setValue(
+ true,
+ mem,
+ op1,
+ (int) ((long) getValue(true, mem, op1) & 0xFFffFFff + 1));
+ break;
+ case VM_INCD:
+ setValue(false, mem, op1, (int) ((long) getValue(false, mem,
+ op1) & 0xFFffFFff + 1));
+ break;
+
+ case VM_DEC: {
+ int result = (int) ((long) getValue(cmd.isByteMode(), mem, op1) & 0xFFffFFff - 1);
+ setValue(cmd.isByteMode(), mem, op1, result);
+ flags = result == 0 ? VMFlags.VM_FZ.getFlag() : result
+ & VMFlags.VM_FS.getFlag();
+ }
+ break;
+
+ case VM_DECB:
+ setValue(
+ true,
+ mem,
+ op1,
+ (int) ((long) getValue(true, mem, op1) & 0xFFffFFff - 1));
+ break;
+ case VM_DECD:
+ setValue(false, mem, op1, (int) ((long) getValue(false, mem,
+ op1) & 0xFFffFFff - 1));
+ break;
+
+ case VM_JMP:
+ setIP(getValue(false, mem, op1));
+ continue;
+ case VM_XOR: {
+ int result = getValue(cmd.isByteMode(), mem, op1)
+ ^ getValue(cmd.isByteMode(), mem, op2);
+ flags = result == 0 ? VMFlags.VM_FZ.getFlag() : result
+ & VMFlags.VM_FS.getFlag();
+ setValue(cmd.isByteMode(), mem, op1, result);
+ }
+ break;
+ case VM_AND: {
+ int result = getValue(cmd.isByteMode(), mem, op1)
+ & getValue(cmd.isByteMode(), mem, op2);
+ flags = result == 0 ? VMFlags.VM_FZ.getFlag() : result
+ & VMFlags.VM_FS.getFlag();
+ setValue(cmd.isByteMode(), mem, op1, result);
+ }
+ break;
+ case VM_OR: {
+ int result = getValue(cmd.isByteMode(), mem, op1)
+ | getValue(cmd.isByteMode(), mem, op2);
+ flags = result == 0 ? VMFlags.VM_FZ.getFlag() : result
+ & VMFlags.VM_FS.getFlag();
+ setValue(cmd.isByteMode(), mem, op1, result);
+ }
+ break;
+ case VM_TEST: {
+ int result = getValue(cmd.isByteMode(), mem, op1)
+ & getValue(cmd.isByteMode(), mem, op2);
+ flags = result == 0 ? VMFlags.VM_FZ.getFlag() : result
+ & VMFlags.VM_FS.getFlag();
+ }
+ break;
+ case VM_JS:
+ if ((flags & VMFlags.VM_FS.getFlag()) != 0) {
+ setIP(getValue(false, mem, op1));
+ continue;
+ }
+ break;
+ case VM_JNS:
+ if ((flags & VMFlags.VM_FS.getFlag()) == 0) {
+ setIP(getValue(false, mem, op1));
+ continue;
+ }
+ break;
+ case VM_JB:
+ if ((flags & VMFlags.VM_FC.getFlag()) != 0) {
+ setIP(getValue(false, mem, op1));
+ continue;
+ }
+ break;
+ case VM_JBE:
+ if ((flags & (VMFlags.VM_FC.getFlag() | VMFlags.VM_FZ.getFlag())) != 0) {
+ setIP(getValue(false, mem, op1));
+ continue;
+ }
+ break;
+ case VM_JA:
+ if ((flags & (VMFlags.VM_FC.getFlag() | VMFlags.VM_FZ.getFlag())) == 0) {
+ setIP(getValue(false, mem, op1));
+ continue;
+ }
+ break;
+ case VM_JAE:
+ if ((flags & VMFlags.VM_FC.getFlag()) == 0) {
+ setIP(getValue(false, mem, op1));
+ continue;
+ }
+ break;
+ case VM_PUSH:
+ R[7] -= 4;
+ setValue(false, mem, R[7] & VM_MEMMASK, getValue(false, mem,
+ op1));
+ break;
+ case VM_POP:
+ setValue(false, mem, op1, getValue(false, mem, R[7]
+ & VM_MEMMASK));
+ R[7] += 4;
+ break;
+ case VM_CALL:
+ R[7] -= 4;
+ setValue(false, mem, R[7] & VM_MEMMASK, IP + 1);
+ setIP(getValue(false, mem, op1));
+ continue;
+ case VM_NOT:
+ setValue(cmd.isByteMode(), mem, op1, ~getValue(
+ cmd.isByteMode(), mem, op1));
+ break;
+ case VM_SHL: {
+ int value1 = getValue(cmd.isByteMode(), mem, op1);
+ int value2 = getValue(cmd.isByteMode(), mem, op2);
+ int result = value1 << value2;
+ flags = (result == 0 ? VMFlags.VM_FZ.getFlag()
+ : (result & VMFlags.VM_FS.getFlag()))
+ | (((value1 << (value2 - 1)) & 0x80000000) != 0 ? VMFlags.VM_FC
+ .getFlag()
+ : 0);
+ setValue(cmd.isByteMode(), mem, op1, result);
+ }
+ break;
+ case VM_SHR: {
+ int value1 = getValue(cmd.isByteMode(), mem, op1);
+ int value2 = getValue(cmd.isByteMode(), mem, op2);
+ int result = value1 >>> value2;
+ flags = (result == 0 ? VMFlags.VM_FZ.getFlag()
+ : (result & VMFlags.VM_FS.getFlag()))
+ | ((value1 >>> (value2 - 1)) & VMFlags.VM_FC.getFlag());
+ setValue(cmd.isByteMode(), mem, op1, result);
+ }
+ break;
+ case VM_SAR: {
+ int value1 = getValue(cmd.isByteMode(), mem, op1);
+ int value2 = getValue(cmd.isByteMode(), mem, op2);
+ int result = ((int) value1) >> value2;
+ flags = (result == 0 ? VMFlags.VM_FZ.getFlag()
+ : (result & VMFlags.VM_FS.getFlag()))
+ | ((value1 >> (value2 - 1)) & VMFlags.VM_FC.getFlag());
+ setValue(cmd.isByteMode(), mem, op1, result);
+ }
+ break;
+ case VM_NEG: {
+ int result = -getValue(cmd.isByteMode(), mem, op1);
+ flags = result == 0 ? VMFlags.VM_FZ.getFlag() : VMFlags.VM_FC
+ .getFlag()
+ | (result & VMFlags.VM_FS.getFlag());
+ setValue(cmd.isByteMode(), mem, op1, result);
+ }
+ break;
+
+ case VM_NEGB:
+ setValue(true, mem, op1, -getValue(true, mem, op1));
+ break;
+ case VM_NEGD:
+ setValue(false, mem, op1, -getValue(false, mem, op1));
+ break;
+ case VM_PUSHA: {
+ for (int i = 0, SP = R[7] - 4; i < regCount; i++, SP -= 4) {
+ setValue(false, mem, SP & VM_MEMMASK, R[i]);
+ }
+ R[7] -= regCount * 4;
+ }
+ break;
+ case VM_POPA: {
+ for (int i = 0, SP = R[7]; i < regCount; i++, SP += 4)
+ R[7 - i] = getValue(false, mem, SP & VM_MEMMASK);
+ }
+ break;
+ case VM_PUSHF:
+ R[7] -= 4;
+ setValue(false, mem, R[7] & VM_MEMMASK, flags);
+ break;
+ case VM_POPF:
+ flags = getValue(false, mem, R[7] & VM_MEMMASK);
+ R[7] += 4;
+ break;
+ case VM_MOVZX:
+ setValue(false, mem, op1, getValue(true, mem, op2));
+ break;
+ case VM_MOVSX:
+ setValue(false, mem, op1, (byte) getValue(true, mem, op2));
+ break;
+ case VM_XCHG: {
+ int value1 = getValue(cmd.isByteMode(), mem, op1);
+ setValue(cmd.isByteMode(), mem, op1, getValue(cmd.isByteMode(),
+ mem, op2));
+ setValue(cmd.isByteMode(), mem, op2, value1);
+ }
+ break;
+ case VM_MUL: {
+ int result = (int) (((long) getValue(cmd.isByteMode(), mem, op1)
+ & 0xFFffFFff
+ * (long) getValue(cmd.isByteMode(), mem, op2) & 0xFFffFFff) & 0xFFffFFff);
+ setValue(cmd.isByteMode(), mem, op1, result);
+ }
+ break;
+ case VM_DIV: {
+ int divider = getValue(cmd.isByteMode(), mem, op2);
+ if (divider != 0) {
+ int result = getValue(cmd.isByteMode(), mem, op1) / divider;
+ setValue(cmd.isByteMode(), mem, op1, result);
+ }
+ }
+ break;
+ case VM_ADC: {
+ int value1 = getValue(cmd.isByteMode(), mem, op1);
+ int FC = (flags & VMFlags.VM_FC.getFlag());
+ int result = (int) ((long) value1 & 0xFFffFFff
+ + (long) getValue(cmd.isByteMode(), mem, op2)
+ & 0xFFffFFff + (long) FC & 0xFFffFFff);
+ if (cmd.isByteMode()) {
+ result &= 0xff;
+ }
+
+ flags = (result < value1 || result == value1 && FC != 0) ? 1
+ : 0 | (result == 0 ? VMFlags.VM_FZ.getFlag()
+ : (result & VMFlags.VM_FS.getFlag()));
+ setValue(cmd.isByteMode(), mem, op1, result);
+ }
+ break;
+ case VM_SBB: {
+ int value1 = getValue(cmd.isByteMode(), mem, op1);
+ int FC = (flags & VMFlags.VM_FC.getFlag());
+ int result = (int) ((long) value1 & 0xFFffFFff
+ - (long) getValue(cmd.isByteMode(), mem, op2)
+ & 0xFFffFFff - (long) FC & 0xFFffFFff);
+ if (cmd.isByteMode()) {
+ result &= 0xff;
+ }
+ flags = (result > value1 || result == value1 && FC != 0) ? 1
+ : 0 | (result == 0 ? VMFlags.VM_FZ.getFlag()
+ : (result & VMFlags.VM_FS.getFlag()));
+ setValue(cmd.isByteMode(), mem, op1, result);
+ }
+ break;
+
+ case VM_RET:
+ if (R[7] >= VM_MEMSIZE) {
+ return (true);
+ }
+ setIP(getValue(false, mem, R[7] & VM_MEMMASK));
+ R[7] += 4;
+ continue;
+
+ case VM_STANDARD:
+ ExecuteStandardFilter(VMStandardFilters.findFilter(cmd.getOp1()
+ .getData()));
+ break;
+ case VM_PRINT:
+ break;
+ }
+ IP++;
+ --maxOpCount;
+ }
+ }
+
+ public void prepare(byte[] code, int codeSize, VMPreparedProgram prg) {
+ InitBitInput();
+ int cpLength = Math.min(MAX_SIZE, codeSize);
+ for (int i = 0; i < cpLength; i++) // memcpy(inBuf,Code,Min(CodeSize,BitInput::MAX_SIZE));
+ {
+ inBuf[i] |= code[i];
+ }
+
+ byte xorSum = 0;
+ for (int i = 1; i < codeSize; i++) {
+ xorSum ^= code[i];
+ }
+
+ faddbits(8);
+
+ prg.setCmdCount(0);
+ if (xorSum == code[0]) {
+ VMStandardFilters filterType = IsStandardFilter(code, codeSize);
+ if (filterType != VMStandardFilters.VMSF_NONE) {
+
+ VMPreparedCommand curCmd = new VMPreparedCommand();
+ curCmd.setOpCode(VMCommands.VM_STANDARD);
+ curCmd.getOp1().setData(filterType.getFilter());
+ curCmd.getOp1().setType(VMOpType.VM_OPNONE);
+ curCmd.getOp2().setType(VMOpType.VM_OPNONE);
+ codeSize = 0;
+ prg.getCmd().add(curCmd);
+ prg.setCmdCount(prg.getCmdCount()+1);
+ // TODO
+ // curCmd->Op1.Data=FilterType;
+ // >>>>>> CurCmd->Op1.Addr=&CurCmd->Op1.Data; <<<<<<<<<< not set
+ // do i need to ?
+ // >>>>>> CurCmd->Op2.Addr=&CurCmd->Op2.Data; <<<<<<<<<< "
+ // CurCmd->Op1.Type=CurCmd->Op2.Type=VM_OPNONE;
+ // CodeSize=0;
+ }
+ int dataFlag = fgetbits();
+ faddbits(1);
+
+ // Read static data contained in DB operators. This data cannot be
+ // changed,
+ // it is a part of VM code, not a filter parameter.
+
+ if ((dataFlag & 0x8000) != 0) {
+ long dataSize = (long) ((long) ReadData(this) & 0xffFFffFF + 1);
+ for (int i = 0; inAddr < codeSize && i < dataSize; i++) {
+ prg.getStaticData().add(
+ Byte.valueOf((byte) (fgetbits() >> 8)));
+ faddbits(8);
+ }
+ }
+
+ while (inAddr < codeSize) {
+ VMPreparedCommand curCmd = new VMPreparedCommand();
+ int data = fgetbits();
+ if ((data & 0x8000) == 0) {
+ curCmd.setOpCode(VMCommands.findVMCommand((data >> 12)));
+ faddbits(4);
+ } else {
+ curCmd.setOpCode(VMCommands
+ .findVMCommand((data >> 10) - 24));
+ faddbits(6);
+ }
+ if ((VMCmdFlags.VM_CmdFlags[curCmd.getOpCode().getVMCommand()] & VMCmdFlags.VMCF_BYTEMODE) != 0) {
+ curCmd.setByteMode((fgetbits() >> 15) == 1 ? true : false);
+ faddbits(1);
+ } else {
+ curCmd.setByteMode(false);
+ }
+ curCmd.getOp1().setType(VMOpType.VM_OPNONE);
+ curCmd.getOp2().setType(VMOpType.VM_OPNONE);
+
+ int opNum = (VMCmdFlags.VM_CmdFlags[curCmd.getOpCode()
+ .getVMCommand()] & VMCmdFlags.VMCF_OPMASK);
+ // TODO >>> CurCmd->Op1.Addr=CurCmd->Op2.Addr=NULL; <<<???
+ if (opNum > 0) {
+ decodeArg(curCmd.getOp1(), curCmd.isByteMode());
+ if (opNum == 2)
+ decodeArg(curCmd.getOp2(), curCmd.isByteMode());
+ else {
+ if (curCmd.getOp1().getType() == VMOpType.VM_OPINT
+ && (VMCmdFlags.VM_CmdFlags[curCmd.getOpCode()
+ .getVMCommand()] & (VMCmdFlags.VMCF_JUMP | VMCmdFlags.VMCF_PROC)) != 0) {
+ int distance = curCmd.getOp1().getData();
+ if (distance >= 256)
+ distance -= 256;
+ else {
+ if (distance >= 136) {
+ distance -= 264;
+ } else {
+ if (distance >= 16) {
+ distance -= 8;
+ } else {
+ if (distance >= 8) {
+ distance -= 16;
+ }
+ }
+ }
+ distance += prg.getCmdCount();
+ }
+ curCmd.getOp1().setData(distance);
+ }
+ }
+ }
+ prg.setCmdCount(prg.getCmdCount() + 1);
+ prg.getCmd().add(curCmd);
+ }
+ }
+ VMPreparedCommand curCmd = new VMPreparedCommand();
+ curCmd.setOpCode(VMCommands.VM_RET);
+ // TODO CurCmd->Op1.Addr=&CurCmd->Op1.Data;
+ // CurCmd->Op2.Addr=&CurCmd->Op2.Data;
+ curCmd.getOp1().setType(VMOpType.VM_OPNONE);
+ curCmd.getOp2().setType(VMOpType.VM_OPNONE);
+
+ // for (int i=0;i<prg.getCmdCount();i++)
+ // {
+ // VM_PreparedCommand *Cmd=&Prg->Cmd[I];
+ // if (Cmd->Op1.Addr==NULL)
+ // Cmd->Op1.Addr=&Cmd->Op1.Data;
+ // if (Cmd->Op2.Addr==NULL)
+ // Cmd->Op2.Addr=&Cmd->Op2.Data;
+ // }
+
+ prg.getCmd().add(curCmd);
+ prg.setCmdCount(prg.getCmdCount()+1);
+ // #ifdef VM_OPTIMIZE
+ if (codeSize != 0) {
+ optimize(prg);
+ }
+ }
+
+ private void decodeArg(VMPreparedOperand op, boolean byteMode) {
+ int data = fgetbits();
+ if ((data & 0x8000) != 0) {
+ op.setType(VMOpType.VM_OPREG);
+ op.setData((data >> 12) & 7);
+ op.setOffset(op.getData());
+ faddbits(4);
+ } else {
+ if ((data & 0xc000) == 0) {
+ op.setType(VMOpType.VM_OPINT);
+ if (byteMode) {
+ op.setData((data >> 6) & 0xff);
+ faddbits(10);
+ } else {
+ faddbits(2);
+ op.setData(ReadData(this));
+ }
+ } else {
+ op.setType(VMOpType.VM_OPREGMEM);
+ if ((data & 0x2000) == 0) {
+ op.setData((data >> 10) & 7);
+ op.setOffset(op.getData());
+ op.setBase(0);
+ faddbits(6);
+ } else {
+ if ((data & 0x1000) == 0) {
+ op.setData((data >> 9) & 7);
+ op.setOffset(op.getData());
+ faddbits(7);
+ } else {
+ op.setData(0);
+ faddbits(4);
+ }
+ op.setBase(ReadData(this));
+ }
+ }
+ }
+
+ }
+
+ private void optimize(VMPreparedProgram prg) {
+ List<VMPreparedCommand> commands = prg.getCmd();
+
+ for (VMPreparedCommand cmd : commands) {
+ switch (cmd.getOpCode()) {
+ case VM_MOV:
+ cmd.setOpCode(cmd.isByteMode() ? VMCommands.VM_MOVB
+ : VMCommands.VM_MOVD);
+ continue;
+ case VM_CMP:
+ cmd.setOpCode(cmd.isByteMode() ? VMCommands.VM_CMPB
+ : VMCommands.VM_CMPD);
+ continue;
+ }
+ if ((VMCmdFlags.VM_CmdFlags[cmd.getOpCode().getVMCommand()] & VMCmdFlags.VMCF_CHFLAGS) == 0) {
+ continue;
+ }
+ boolean flagsRequired = false;
+
+ for (int i = commands.indexOf(cmd) + 1; i < commands.size(); i++) {
+ int flags = VMCmdFlags.VM_CmdFlags[commands.get(i).getOpCode()
+ .getVMCommand()];
+ if ((flags & (VMCmdFlags.VMCF_JUMP | VMCmdFlags.VMCF_PROC | VMCmdFlags.VMCF_USEFLAGS)) != 0) {
+ flagsRequired = true;
+ break;
+ }
+ if ((flags & VMCmdFlags.VMCF_CHFLAGS) != 0) {
+ break;
+ }
+ }
+ if (flagsRequired) {
+ continue;
+ }
+ switch (cmd.getOpCode()) {
+ case VM_ADD:
+ cmd.setOpCode(cmd.isByteMode() ? VMCommands.VM_ADDB
+ : VMCommands.VM_ADDD);
+ continue;
+ case VM_SUB:
+ cmd.setOpCode(cmd.isByteMode() ? VMCommands.VM_SUBB
+ : VMCommands.VM_SUBD);
+ continue;
+ case VM_INC:
+ cmd.setOpCode(cmd.isByteMode() ? VMCommands.VM_INCB
+ : VMCommands.VM_INCD);
+ continue;
+ case VM_DEC:
+ cmd.setOpCode(cmd.isByteMode() ? VMCommands.VM_DECB
+ : VMCommands.VM_DECD);
+ continue;
+ case VM_NEG:
+ cmd.setOpCode(cmd.isByteMode() ? VMCommands.VM_NEGB
+ : VMCommands.VM_NEGD);
+ continue;
+ }
+ }
+
+ }
+
+ public static int ReadData(BitInput rarVM) {
+ int data = rarVM.fgetbits();
+ switch (data & 0xc000) {
+ case 0:
+ rarVM.faddbits(6);
+ return ((data >> 10) & 0xf);
+ case 0x4000:
+ if ((data & 0x3c00) == 0) {
+ data = 0xffffff00 | ((data >> 2) & 0xff);
+ rarVM.faddbits(14);
+ } else {
+ data = (data >> 6) & 0xff;
+ rarVM.faddbits(10);
+ }
+ return (data);
+ case 0x8000:
+ rarVM.faddbits(2);
+ data = rarVM.fgetbits();
+ rarVM.faddbits(16);
+ return (data);
+ default:
+ rarVM.faddbits(2);
+ data = (rarVM.fgetbits() << 16);
+ rarVM.faddbits(16);
+ data |= rarVM.fgetbits();
+ rarVM.faddbits(16);
+ return (data);
+ }
+ }
+
+ private VMStandardFilters IsStandardFilter(byte[] code, int codeSize) {
+ VMStandardFilterSignature stdList[]={
+ new VMStandardFilterSignature(53, 0xad576887, VMStandardFilters.VMSF_E8),
+ new VMStandardFilterSignature(57, 0x3cd7e57e, VMStandardFilters.VMSF_E8E9),
+ new VMStandardFilterSignature(120, 0x3769893f, VMStandardFilters.VMSF_ITANIUM),
+ new VMStandardFilterSignature(29, 0x0e06077d, VMStandardFilters.VMSF_DELTA),
+ new VMStandardFilterSignature(149, 0x1c2c5dc8, VMStandardFilters.VMSF_RGB),
+ new VMStandardFilterSignature(216, 0xbc85e701, VMStandardFilters.VMSF_AUDIO),
+ new VMStandardFilterSignature(40, 0x46b9c560, VMStandardFilters.VMSF_UPCASE)
+ };
+ int CodeCRC = RarCRC.checkCrc(0xffffffff,code,0,code.length)^0xffffffff;
+ for (int i=0;i<stdList.length;i++){
+ if (stdList[i].getCRC()==CodeCRC && stdList[i].getLength()==code.length){
+ return(stdList[i].getType());
+ }
+
+ }
+ return(VMStandardFilters.VMSF_NONE);
+ }
+
+ private void ExecuteStandardFilter(VMStandardFilters filterType) {
+ switch(filterType)
+ {
+ case VMSF_E8:
+ case VMSF_E8E9:
+ {
+ int dataSize=R[4];
+ long fileOffset=R[6]&0xFFffFFff;
+
+ if (dataSize>=VM_GLOBALMEMADDR){
+ break;
+ }
+ int fileSize=0x1000000;
+ byte cmpByte2=(byte) ((filterType==VMStandardFilters.VMSF_E8E9) ? 0xe9:0xe8);
+ for (int curPos=0;curPos<dataSize-4;)
+ {
+ byte curByte=mem[curPos++];
+ if (curByte==0xe8 || curByte==cmpByte2)
+ {
+// #ifdef PRESENT_INT32
+// sint32 Offset=CurPos+FileOffset;
+// sint32 Addr=GET_VALUE(false,Data);
+// if (Addr<0)
+// {
+// if (Addr+Offset>=0)
+// SET_VALUE(false,Data,Addr+FileSize);
+// }
+// else
+// if (Addr<FileSize)
+// SET_VALUE(false,Data,Addr-Offset);
+// #else
+ long offset=curPos+fileOffset;
+ long Addr=getValue(false,mem,curPos);
+ if ((Addr & 0x80000000)!=0)
+ {
+ if (((Addr+offset) & 0x80000000)==0)
+ setValue(false,mem,curPos,(int)Addr+fileSize);
+ }
+ else {
+ if (((Addr-fileSize) & 0x80000000)!=0){
+ setValue(false,mem,curPos,(int)(Addr-offset));
+ }
+ }
+// #endif
+ curPos+=4;
+ }
+ }
+ }
+ break;
+ case VMSF_ITANIUM:
+ {
+
+ int dataSize=R[4];
+ long fileOffset=R[6]&0xFFffFFff;
+
+ if (dataSize>=VM_GLOBALMEMADDR){
+ break;
+ }
+ int curPos=0;
+ final byte Masks[]={4,4,6,6,0,0,7,7,4,4,0,0,4,4,0,0};
+ fileOffset>>>=4;
+
+ while (curPos<dataSize-21)
+ {
+ int Byte=(mem[curPos]&0x1f)-0x10;
+ if (Byte>=0)
+ {
+
+ byte cmdMask=Masks[Byte];
+ if (cmdMask!=0)
+ for (int i=0;i<=2;i++)
+ if ((cmdMask & (1<<i))!=0)
+ {
+ int startPos=i*41+5;
+ int opType=filterItanium_GetBits(curPos,startPos+37,4);
+ if (opType==5)
+ {
+ int offset=filterItanium_GetBits(curPos,startPos+13,20);
+ filterItanium_SetBits(curPos,(int)(offset-fileOffset)&0xfffff,startPos+13,20);
+ }
+ }
+ }
+ curPos+=16;
+ fileOffset++;
+ }
+ }
+ break;
+ case VMSF_DELTA:
+ {
+ int dataSize=R[4]&0xFFffFFff;
+ int channels=R[0]&0xFFffFFff;
+ int srcPos=0;
+ int border=(dataSize*2) &0xFFffFFff;
+ setValue(false,mem,VM_GLOBALMEMADDR+0x20,(int)dataSize);
+ if (dataSize>=VM_GLOBALMEMADDR/2){
+ break;
+ }
+// bytes from same channels are grouped to continual data blocks,
+// so we need to place them back to their interleaving positions
+
+ for (int curChannel=0;curChannel<channels;curChannel++)
+ {
+ byte PrevByte=0;
+ for (int destPos=dataSize+curChannel;destPos<border;destPos+=channels){
+ mem[destPos]=(PrevByte-=mem[srcPos++]);
+ }
+
+ }
+ }
+ break;
+ case VMSF_RGB:
+ {
+ // byte *SrcData=Mem,*DestData=SrcData+DataSize;
+ int dataSize=R[4],width=R[0]-3,posR=R[1];
+ int channels=3;
+ int srcPos = 0;
+ int destDataPos = dataSize;
+ setValue(false,mem,VM_GLOBALMEMADDR+0x20,dataSize);
+ if (dataSize>=VM_GLOBALMEMADDR/2 || posR<0){
+ break;
+ }
+ for (int curChannel=0;curChannel<channels;curChannel++)
+ {
+ long prevByte=0;
+
+ for (int i=curChannel;i<dataSize;i+=channels)
+ {
+ long predicted;
+ int upperPos=i-width;
+ if (upperPos>=3)
+ {
+ int upperDataPos=destDataPos+upperPos;
+ int upperByte=mem[(int)upperDataPos]&0xff;
+ int upperLeftByte=mem[upperDataPos-3]&0xff;
+ predicted=prevByte+upperByte-upperLeftByte;
+ int pa=Math.abs((int)(predicted-prevByte));
+ int pb=Math.abs((int)(predicted-upperByte));
+ int pc=Math.abs((int)(predicted-upperLeftByte));
+ if (pa<=pb && pa<=pc){
+ predicted=prevByte;
+ }
+ else{
+ if (pb<=pc){
+ predicted=upperByte;
+ }
+ else{
+ predicted=upperLeftByte;
+ }
+ }
+ }
+ else{
+ predicted=prevByte;
+ }
+
+ prevByte=(predicted-mem[srcPos++]&0xff)&0xff;
+ mem[destDataPos+i]=(byte)(prevByte&0xff);
+
+ }
+ }
+ for (int i=posR,border=dataSize-2;i<border;i+=3)
+ {
+ byte G=mem[destDataPos+i+1];
+ mem[destDataPos+i]+=G;
+ mem[destDataPos+i+2]+=G;
+ }
+ }
+ break;
+ case VMSF_AUDIO:
+ {
+ int dataSize=R[4],channels=R[0];
+ int srcPos = 0;
+ int destDataPos = dataSize;
+ //byte *SrcData=Mem,*DestData=SrcData+DataSize;
+ setValue(false,mem,VM_GLOBALMEMADDR+0x20,dataSize);
+ if (dataSize>=VM_GLOBALMEMADDR/2){
+ break;
+ }
+ for (int curChannel=0;curChannel<channels;curChannel++)
+ {
+ long prevByte=0;
+ long prevDelta=0;
+ long Dif[] = new long[7];
+ int D1=0,D2=0,D3;
+ int K1=0,K2=0,K3=0;
+
+ for (int i=curChannel,byteCount=0;i<dataSize;i+=channels,byteCount++)
+ {
+ D3=D2;
+ D2=(int)prevDelta-D1;
+ D1=(int)prevDelta;
+
+ long predicted=8*prevByte+K1*D1+K2*D2+K3*D3;
+ predicted=(predicted>>>3) & 0xff;
+
+ long curByte=mem[srcPos++]&0xff;
+
+ predicted = (predicted - curByte)&UINT_MASK;
+ mem[destDataPos+i]=(byte)predicted;
+ prevDelta=(byte)(predicted-prevByte);
+ prevByte=predicted;
+
+ int D=((byte)curByte)<<3;
+
+ Dif[0]+=Math.abs(D);
+ Dif[1]+=Math.abs(D-D1);
+ Dif[2]+=Math.abs(D+D1);
+ Dif[3]+=Math.abs(D-D2);
+ Dif[4]+=Math.abs(D+D2);
+ Dif[5]+=Math.abs(D-D3);
+ Dif[6]+=Math.abs(D+D3);
+
+ if ((byteCount & 0x1f)==0)
+ {
+ long minDif=Dif[0], numMinDif=0;
+ Dif[0]=0;
+ for (int j=1;j<Dif.length;j++)
+ {
+ if (Dif[j]<minDif)
+ {
+ minDif=Dif[j];
+ numMinDif=j;
+ }
+ Dif[j]=0;
+ }
+ switch((int)numMinDif)
+ {
+ case 1: if (K1>=-16) K1--; break;
+ case 2: if (K1 < 16) K1++; break;
+ case 3: if (K2>=-16) K2--; break;
+ case 4: if (K2 < 16) K2++; break;
+ case 5: if (K3>=-16) K3--; break;
+ case 6: if (K3 < 16) K3++; break;
+ }
+ }
+ }
+ }
+ }
+ break;
+ case VMSF_UPCASE:
+ {
+ int dataSize=R[4],srcPos=0,destPos=dataSize;
+ if (dataSize>=VM_GLOBALMEMADDR/2){
+ break;
+ }
+ while (srcPos<dataSize)
+ {
+ byte curByte=mem[srcPos++];
+ if (curByte==2 && (curByte=mem[srcPos++])!=2){
+ curByte-=32;
+ }
+ mem[destPos++]=curByte;
+ }
+ setValue(false,mem,VM_GLOBALMEMADDR+0x1c,destPos-dataSize);
+ setValue(false,mem,VM_GLOBALMEMADDR+0x20,dataSize);
+ }
+ break;
+ }
+
+ }
+
+ private void filterItanium_SetBits(int curPos, int bitField, int bitPos, int bitCount) {
+ int inAddr=bitPos/8;
+ int inBit=bitPos&7;
+ int andMask=0xffffffff>>>(32-bitCount);
+ andMask=~(andMask<<inBit);
+
+ bitField<<=inBit;
+
+ for (int i=0;i<4;i++)
+ {
+ mem[curPos+inAddr+i]&=andMask;
+ mem[curPos+inAddr+i]|=bitField;
+ andMask=(andMask>>>8)|0xff000000;
+ bitField>>>=8;
+ }
+
+ }
+
+ private int filterItanium_GetBits(int curPos, int bitPos, int bitCount) {
+ int inAddr=bitPos/8;
+ int inBit=bitPos&7;
+ int bitField=(int)(mem[curPos+inAddr++]&0xff);
+ bitField|=(int) ((mem[curPos+inAddr++]&0xff) << 8);
+ bitField|=(int) ((mem[curPos+inAddr++]&0xff) << 16);
+ bitField|=(int) ((mem[curPos+inAddr]&0xff) << 24);
+ bitField >>>= inBit;
+ return(bitField & (0xffffffff>>>(32-bitCount)));
+ }
+
+
+ public void setMemory(int pos,byte[] data,int offset,int dataSize)
+ {
+ if (pos<VM_MEMSIZE){ //&& data!=Mem+Pos)
+ //memmove(Mem+Pos,Data,Min(DataSize,VM_MEMSIZE-Pos));
+ for (int i = 0; i < Math.min(data.length-offset,dataSize); i++) {
+ if((VM_MEMSIZE-pos)<i){
+ break;
+ }
+ mem[pos+i] = data[offset+i];
+ }
+ }
+ }
+
+
+}
+
+//
\ No newline at end of file |