Example usage for org.objectweb.asm Opcodes POP

List of usage examples for org.objectweb.asm Opcodes POP

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In this page you can find the example usage for org.objectweb.asm Opcodes POP.

Prototype

int POP

To view the source code for org.objectweb.asm Opcodes POP.

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Usage

From source file:jerl.bcm.inj.impl.InjectCollection.java

License:Apache License

public void injectReplaceStackInt(MethodVisitor mv, int i) {
    mv.visitInsn(Opcodes.POP);
    mv.visitLdcInsn(new Integer(i));
}

From source file:jerl.bcm.inj.impl.MethodCallRemove.java

License:Apache License

@Override
public void inject(MethodVisitor mv) {
    // TODO Auto-generated method stub
    // pop arguments
    Type[] args = Type.getArgumentTypes(desc);
    for (int i = 0; i < args.length; i++) {
        if (args[i].getSort() == Type.DOUBLE || args[i].getSort() == Type.LONG) {
            mv.visitInsn(Opcodes.POP2);/* w ww. ja va  2s .c om*/
        } else {
            mv.visitInsn(Opcodes.POP);
        }
    }
    if (opcode == Opcodes.INVOKESTATIC) {
    } else {
        mv.visitInsn(Opcodes.POP);
    }
}

From source file:jpcsp.Allegrex.compiler.CodeInstruction.java

License:Open Source License

private int loadRegistersForBranchingOpcodeBranch2(CompilerContext context, MethodVisitor mv,
        int branchingOpcode) {
    boolean loadRs = true;
    boolean loadRt = true;

    if (context.getRsRegisterIndex() == context.getRtRegisterIndex()) {
        if (branchingOpcode == Opcodes.IF_ICMPEQ) {
            loadRs = false;//from w ww. j  a  v a2  s.  com
            loadRt = false;
            branchingOpcode = Opcodes.GOTO;

            // The ASM library has problems with small frames having no
            // stack (NullPointerException). Generate a dummy stack requirement:
            //   ILOAD 0
            //   POP
            context.loadImm(0);
            context.getMethodVisitor().visitInsn(Opcodes.POP);
        } else if (branchingOpcode == Opcodes.IF_ICMPNE) {
            loadRs = false;
            loadRt = false;
            branchingOpcode = Opcodes.NOP;
        }
    } else if (context.isRsRegister0()) {
        if (branchingOpcode == Opcodes.IF_ICMPEQ) {
            loadRs = false;
            branchingOpcode = Opcodes.IFEQ;
        } else if (branchingOpcode == Opcodes.IF_ICMPNE) {
            loadRs = false;
            branchingOpcode = Opcodes.IFNE;
        }
    } else if (context.isRtRegister0()) {
        if (branchingOpcode == Opcodes.IF_ICMPEQ) {
            loadRt = false;
            branchingOpcode = Opcodes.IFEQ;
        } else if (branchingOpcode == Opcodes.IF_ICMPNE) {
            loadRt = false;
            branchingOpcode = Opcodes.IFNE;
        }
    }

    if (loadRs) {
        context.loadRs();
    }
    if (loadRt) {
        context.loadRt();
    }

    return branchingOpcode;
}

From source file:jpcsp.Allegrex.compiler.CompilerContext.java

License:Open Source License

private void storeVRegister(int vsize, int reg, int n, VfpuPfxDstState pfxDstState, boolean isFloat) {
    if (log.isTraceEnabled() && pfxDstState != null && pfxDstState.isKnown() && pfxDstState.pfxDst.enabled) {
        log.trace(String.format("PFX    %08X - storeVRegister %d, %d, %d", getCodeInstruction().getAddress(),
                vsize, reg, n));/* w w  w .ja v  a 2  s. c  o  m*/
    }

    if (preparedRegisterForStore == reg) {
        if (isPfxDstMasked(pfxDstState, n)) {
            if (log.isTraceEnabled() && pfxDstState != null && pfxDstState.isKnown()
                    && pfxDstState.pfxDst.enabled) {
                log.trace(String.format("PFX    %08X - storeVRegister %d masked",
                        getCodeInstruction().getAddress(), n));
            }

            mv.visitInsn(Opcodes.POP);
        } else {
            applyPfxDstPostfix(pfxDstState, n, isFloat);
            if (isFloat) {
                // Keep a copy of the value for the int value
                mv.visitInsn(Opcodes.DUP_X2);
                mv.visitInsn(Opcodes.FASTORE); // First store the float value
                convertVFloatToInt();
                mv.visitInsn(Opcodes.IASTORE); // Second store the int value
            } else {
                // Keep a copy of the value for the float value
                mv.visitInsn(Opcodes.DUP_X2);
                mv.visitInsn(Opcodes.IASTORE); // First store the int value
                convertVIntToFloat();
                mv.visitInsn(Opcodes.FASTORE); // Second store the float value
            }
        }
        preparedRegisterForStore = -1;
    } else {
        log.error("storeVRegister with non-prepared register is not supported");
    }
}

From source file:jpcsp.Allegrex.compiler.CompilerContext.java

License:Open Source License

@Override
public void storeHilo() {
    if (!hiloPrepared) {
        loadCpu();// w  w  w  . j  a  v a  2 s. c  o m
        mv.visitInsn(Opcodes.DUP_X2);
        mv.visitInsn(Opcodes.POP);
    }
    mv.visitFieldInsn(Opcodes.PUTFIELD, cpuInternalName, "hilo", Type.getDescriptor(long.class));

    hiloPrepared = false;
}

From source file:jpcsp.Allegrex.compiler.CompilerContext.java

License:Open Source License

private void visitContinueToAddress(int returnAddress, boolean returnOnUnknownAddress) {
    //      if (x != returnAddress) {
    //          RuntimeContext.jump(x, returnAddress);
    //      }/*w w w  .  ja  v a  2s  .  c  o m*/
    Label continueLabel = new Label();
    Label isReturnAddress = new Label();

    mv.visitInsn(Opcodes.DUP);
    loadImm(returnAddress);
    visitJump(Opcodes.IF_ICMPEQ, isReturnAddress);

    if (returnOnUnknownAddress) {
        visitJump();
    } else {
        loadImm(returnAddress);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, runtimeContextInternalName, "jump", "(II)V");
        mv.visitJumpInsn(Opcodes.GOTO, continueLabel);
    }

    mv.visitLabel(isReturnAddress);
    mv.visitInsn(Opcodes.POP);
    mv.visitLabel(continueLabel);
}

From source file:jpcsp.Allegrex.compiler.CompilerContext.java

License:Open Source License

private void visitContinueToAddressInRegister(int reg) {
    //      if (x != cpu.reg) {
    //          RuntimeContext.jump(x, cpu.reg);
    //      }/*from w w w . j ava 2  s . com*/
    Label continueLabel = new Label();
    Label isReturnAddress = new Label();

    mv.visitInsn(Opcodes.DUP);
    loadRegister(reg);
    visitJump(Opcodes.IF_ICMPEQ, isReturnAddress);

    loadRegister(reg);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, runtimeContextInternalName, "jump", "(II)V");
    mv.visitJumpInsn(Opcodes.GOTO, continueLabel);

    mv.visitLabel(isReturnAddress);
    mv.visitInsn(Opcodes.POP);
    mv.visitLabel(continueLabel);
}

From source file:jpcsp.Allegrex.compiler.CompilerContext.java

License:Open Source License

private void logSyscall(HLEModuleFunction func, String logPrefix, String logCheckFunction, String logFunction) {
    // Modules.getLogger(func.getModuleName()).warn("Unimplemented...");
    loadModuleLoggger(func);/*from  w  w  w  .j av  a 2 s  . c o m*/
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Logger.class), logCheckFunction, "()Z");
    Label loggingDisabled = new Label();
    mv.visitJumpInsn(Opcodes.IFEQ, loggingDisabled);

    loadModuleLoggger(func);

    StringBuilder formatString = new StringBuilder();
    if (logPrefix != null) {
        formatString.append(logPrefix);
    }
    formatString.append(func.getFunctionName());
    ParameterInfo[] parameters = new ClassAnalyzer().getParameters(func.getFunctionName(),
            func.getHLEModuleMethod().getDeclaringClass());
    if (parameters != null) {
        // Log message:
        //    String.format(
        //       "Unimplemented <function name>
        //                 <parameterIntegerName>=0x%X,
        //                 <parameterBooleanName>=%b,
        //                 <parameterLongName>=0x%X,
        //                 <parameterFloatName>=%f,
        //                 <parameterOtherTypeName>=%s",
        //       new Object[] {
        //                 new Integer(parameterValueInteger),
        //                 new Boolean(parameterValueBoolean),
        //                 new Long(parameterValueLong),
        //                 new Float(parameterValueFloat),
        //                 parameterValueOtherTypes
        //       })
        loadImm(parameters.length);
        mv.visitTypeInsn(Opcodes.ANEWARRAY, Type.getInternalName(Object.class));
        CompilerParameterReader parameterReader = new CompilerParameterReader(this);
        Annotation[][] paramsAnotations = func.getHLEModuleMethod().getParameterAnnotations();
        int objectArrayIndex = 0;
        for (int paramIndex = 0; paramIndex < parameters.length; paramIndex++) {
            ParameterInfo parameter = parameters[paramIndex];
            Class<?> parameterType = parameter.type;
            CompilerTypeInformation typeInformation = compilerTypeManager
                    .getCompilerTypeInformation(parameterType);

            mv.visitInsn(Opcodes.DUP);
            loadImm(objectArrayIndex);

            formatString.append(paramIndex > 0 ? ", " : " ");
            formatString.append(parameter.name);
            formatString.append("=");
            formatString.append(typeInformation.formatString);

            if (typeInformation.boxingTypeInternalName != null) {
                mv.visitTypeInsn(Opcodes.NEW, typeInformation.boxingTypeInternalName);
                mv.visitInsn(Opcodes.DUP);
            }

            loadParameter(parameterReader, func, parameterType, paramsAnotations[paramIndex], null, null);

            if (typeInformation.boxingTypeInternalName != null) {
                mv.visitMethodInsn(Opcodes.INVOKESPECIAL, typeInformation.boxingTypeInternalName, "<init>",
                        typeInformation.boxingMethodDescriptor);
            }
            mv.visitInsn(Opcodes.AASTORE);

            objectArrayIndex++;
        }
        mv.visitLdcInsn(formatString.toString());
        mv.visitInsn(Opcodes.SWAP);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(String.class), "format",
                "(" + Type.getDescriptor(String.class) + "[" + Type.getDescriptor(Object.class) + ")"
                        + Type.getDescriptor(String.class));
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Logger.class), logFunction,
                "(" + Type.getDescriptor(Object.class) + ")V");

        parameterReader = new CompilerParameterReader(this);
        for (int paramIndex = 0; paramIndex < parameters.length; paramIndex++) {
            ParameterInfo parameter = parameters[paramIndex];
            Class<?> parameterType = parameter.type;

            LengthInfo lengthInfo = BufferInfo.defaultLengthInfo;
            int length = BufferInfo.defaultLength;
            Usage usage = BufferInfo.defaultUsage;
            for (Annotation parameterAnnotation : paramsAnotations[paramIndex]) {
                if (parameterAnnotation instanceof BufferInfo) {
                    BufferInfo bufferInfo = (BufferInfo) parameterAnnotation;
                    lengthInfo = bufferInfo.lengthInfo();
                    length = bufferInfo.length();
                    usage = bufferInfo.usage();
                }
            }

            boolean parameterRead = false;
            if ((usage == Usage.in || usage == Usage.inout)
                    && (lengthInfo != LengthInfo.unknown || parameterType == TPointer16.class
                            || parameterType == TPointer32.class || parameterType == TPointer64.class)) {
                loadModuleLoggger(func);
                loadImm(1);
                mv.visitTypeInsn(Opcodes.ANEWARRAY, Type.getInternalName(Object.class));
                mv.visitInsn(Opcodes.DUP);
                loadImm(0);

                Label done = new Label();
                Label addressNull = new Label();
                parameterReader.loadNextInt();
                parameterRead = true;
                mv.visitInsn(Opcodes.DUP);
                mv.visitJumpInsn(Opcodes.IFEQ, addressNull);

                String format = String.format("%s[%s]:%%s", parameter.name, usage);
                boolean useMemoryDump = true;

                switch (lengthInfo) {
                case fixedLength:
                    loadImm(length);
                    break;
                case nextNextParameter:
                    parameterReader.skipNextInt();
                    paramIndex++;
                    parameterReader.loadNextInt();
                    paramIndex++;
                    break;
                case nextParameter:
                    parameterReader.loadNextInt();
                    paramIndex++;
                    break;
                case previousParameter:
                    // Go back to the address parameter
                    parameterReader.rewindPreviousInt();
                    // Go back to the previous parameter
                    parameterReader.rewindPreviousInt();
                    // Load the length from the previous parameter
                    parameterReader.loadNextInt();
                    // Skip again the address parameter
                    // to come back to the above situation
                    parameterReader.skipNextInt();
                    break;
                case variableLength:
                    mv.visitInsn(Opcodes.DUP);
                    loadMemory();
                    mv.visitInsn(Opcodes.SWAP);
                    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, memoryInternalName, "read32", "(I)I");
                    break;
                case unknown:
                    useMemoryDump = false;
                    format = String.format("%s[%s]: 0x%%X", parameter.name, usage);
                    loadMemory();
                    mv.visitInsn(Opcodes.SWAP);
                    if (parameterType == TPointer64.class) {
                        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, memoryInternalName, "read64", "(I)J");
                        mv.visitTypeInsn(Opcodes.NEW, Type.getInternalName(Long.class));
                        mv.visitInsn(Opcodes.DUP);
                        mv.visitInsn(Opcodes.DUP2_X2);
                        mv.visitInsn(Opcodes.POP2);
                        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(Long.class), "<init>",
                                "(J)V");
                    } else if (parameterType == TPointer16.class) {
                        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, memoryInternalName, "read16", "(I)I");
                        mv.visitTypeInsn(Opcodes.NEW, Type.getInternalName(Integer.class));
                        mv.visitInsn(Opcodes.DUP_X1);
                        mv.visitInsn(Opcodes.SWAP);
                        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(Integer.class), "<init>",
                                "(I)V");
                    } else {
                        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, memoryInternalName, "read32", "(I)I");
                        mv.visitTypeInsn(Opcodes.NEW, Type.getInternalName(Integer.class));
                        mv.visitInsn(Opcodes.DUP_X1);
                        mv.visitInsn(Opcodes.SWAP);
                        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(Integer.class), "<init>",
                                "(I)V");
                    }
                    break;
                default:
                    log.error(String.format("Unimplemented lengthInfo=%s", lengthInfo));
                    break;
                }

                if (useMemoryDump) {
                    mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(Utilities.class),
                            "getMemoryDump", "(II)" + Type.getDescriptor(String.class));
                }
                mv.visitInsn(Opcodes.AASTORE);

                mv.visitLdcInsn(format);
                mv.visitInsn(Opcodes.SWAP);
                mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(String.class), "format",
                        "(" + Type.getDescriptor(String.class) + "[" + Type.getDescriptor(Object.class) + ")"
                                + Type.getDescriptor(String.class));
                mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Logger.class), logFunction,
                        "(" + Type.getDescriptor(Object.class) + ")V");
                mv.visitJumpInsn(Opcodes.GOTO, done);

                mv.visitLabel(addressNull);
                mv.visitInsn(Opcodes.POP);
                mv.visitInsn(Opcodes.POP2);
                mv.visitInsn(Opcodes.POP2);
                mv.visitLabel(done);
            }

            if (!parameterRead) {
                if (parameterType == long.class) {
                    parameterReader.skipNextLong();
                } else if (parameterType == float.class) {
                    parameterReader.skipNextFloat();
                } else {
                    parameterReader.skipNextInt();
                }
            }
        }
    } else {
        mv.visitLdcInsn(formatString.toString());
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Logger.class), logFunction,
                "(" + Type.getDescriptor(Object.class) + ")V");
    }

    mv.visitLabel(loggingDisabled);
}

From source file:jpcsp.Allegrex.compiler.CompilerContext.java

License:Open Source License

private void logSyscallEnd(HLEModuleFunction func, boolean isErrorCode) {
    String loggingLevel = getLoggingLevel(func);
    if (loggingLevel == null) {
        return;//from w w  w .j a  v a 2 s .c  om
    }
    String logCheckFunction = getLogCheckFunction(loggingLevel);

    // if (Modules.getLogger(func.getModuleName()).isDebugEnabled()) {
    //     Modules.getLogger(func.getModuleName()).debug(String.format("<function name> returning 0x%X", new Object[1] { new Integer(returnValue) }));
    // }
    loadModuleLoggger(func);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Logger.class), logCheckFunction, "()Z");
    Label notDebug = new Label();
    mv.visitJumpInsn(Opcodes.IFEQ, notDebug);

    boolean isReturningVoid = func.getHLEModuleMethod().getReturnType() == void.class;

    mv.visitInsn(Opcodes.DUP);
    mv.visitTypeInsn(Opcodes.NEW, Type.getInternalName(Integer.class));
    mv.visitInsn(Opcodes.DUP_X1);
    mv.visitInsn(Opcodes.SWAP);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(Integer.class), "<init>", "(I)V");
    loadImm(1);
    mv.visitTypeInsn(Opcodes.ANEWARRAY, Type.getInternalName(Object.class));
    mv.visitInsn(Opcodes.DUP_X1);
    mv.visitInsn(Opcodes.SWAP);
    loadImm(0);
    mv.visitInsn(Opcodes.SWAP);
    mv.visitInsn(Opcodes.AASTORE);
    String prefix = func.isUnimplemented() && !codeBlock.isHLEFunction() ? "Unimplemented " : "";
    mv.visitLdcInsn(String.format("%s%s returning %s%s", prefix, func.getFunctionName(),
            isErrorCode ? "errorCode " : "", isReturningVoid ? "void" : "0x%X"));
    mv.visitInsn(Opcodes.SWAP);
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(String.class), "format",
            "(" + Type.getDescriptor(String.class) + "[" + Type.getDescriptor(Object.class) + ")"
                    + Type.getDescriptor(String.class));
    loadModuleLoggger(func);
    mv.visitInsn(Opcodes.SWAP);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Logger.class), loggingLevel,
            "(" + Type.getDescriptor(Object.class) + ")V");

    if (!isErrorCode) {
        ParameterInfo[] parameters = new ClassAnalyzer().getParameters(func.getFunctionName(),
                func.getHLEModuleMethod().getDeclaringClass());
        if (parameters != null) {
            CompilerParameterReader parameterReader;
            if (parametersSavedToLocals) {
                parameterReader = new CompilerLocalVarParameterReader(this, LOCAL_FIRST_SAVED_PARAMETER);
            } else {
                parameterReader = new CompilerParameterReader(this);
            }

            Annotation[][] paramsAnotations = func.getHLEModuleMethod().getParameterAnnotations();
            for (int paramIndex = 0; paramIndex < parameters.length; paramIndex++) {
                ParameterInfo parameter = parameters[paramIndex];
                Class<?> parameterType = parameter.type;

                LengthInfo lengthInfo = BufferInfo.defaultLengthInfo;
                int length = BufferInfo.defaultLength;
                Usage usage = BufferInfo.defaultUsage;
                boolean debugMemory = false;
                for (Annotation parameterAnnotation : paramsAnotations[paramIndex]) {
                    if (parameterAnnotation instanceof BufferInfo) {
                        BufferInfo bufferInfo = (BufferInfo) parameterAnnotation;
                        lengthInfo = bufferInfo.lengthInfo();
                        length = bufferInfo.length();
                        usage = bufferInfo.usage();
                    } else if (parameterAnnotation instanceof DebugMemory) {
                        debugMemory = true;
                    }
                }

                boolean parameterRead = false;
                if ((usage == Usage.out || usage == Usage.inout)
                        && (lengthInfo != LengthInfo.unknown || parameterType == TPointer16.class
                                || parameterType == TPointer32.class || parameterType == TPointer64.class)) {
                    loadModuleLoggger(func);
                    loadImm(1);
                    mv.visitTypeInsn(Opcodes.ANEWARRAY, Type.getInternalName(Object.class));
                    mv.visitInsn(Opcodes.DUP);
                    loadImm(0);

                    Label done = new Label();
                    Label addressNull = new Label();
                    parameterReader.loadNextInt();
                    parameterRead = true;
                    mv.visitInsn(Opcodes.DUP);
                    mv.visitJumpInsn(Opcodes.IFEQ, addressNull);

                    String format = String.format("%s[%s]:%%s", parameter.name, usage);
                    boolean useMemoryDump = true;

                    switch (lengthInfo) {
                    case fixedLength:
                        loadImm(length);
                        break;
                    case nextNextParameter:
                        parameterReader.skipNextInt();
                        paramIndex++;
                        parameterReader.loadNextInt();
                        paramIndex++;
                        break;
                    case nextParameter:
                        parameterReader.loadNextInt();
                        paramIndex++;
                        break;
                    case previousParameter:
                        // Go back to the address parameter
                        parameterReader.rewindPreviousInt();
                        // Go back to the previous parameter
                        parameterReader.rewindPreviousInt();
                        // Load the length from the previous parameter
                        parameterReader.loadNextInt();
                        // Skip again the address parameter
                        // to come back to the above situation
                        parameterReader.skipNextInt();
                        break;
                    case variableLength:
                        mv.visitInsn(Opcodes.DUP);
                        loadMemory();
                        mv.visitInsn(Opcodes.SWAP);
                        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, memoryInternalName, "read32", "(I)I");
                        break;
                    case returnValue:
                        loadRegister(_v0);
                        break;
                    case unknown:
                        useMemoryDump = false;
                        format = String.format("%s[%s]: 0x%%X", parameter.name, usage);
                        loadMemory();
                        mv.visitInsn(Opcodes.SWAP);
                        if (parameterType == TPointer64.class) {
                            if (debugMemory) {
                                mv.visitInsn(Opcodes.DUP);
                                loadImm(8);
                                mv.visitMethodInsn(Opcodes.INVOKESTATIC, runtimeContextInternalName,
                                        "debugMemory", "(II)V");
                            }
                            mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, memoryInternalName, "read64", "(I)J");
                            mv.visitTypeInsn(Opcodes.NEW, Type.getInternalName(Long.class));
                            mv.visitInsn(Opcodes.DUP);
                            mv.visitInsn(Opcodes.DUP2_X2);
                            mv.visitInsn(Opcodes.POP2);
                            mv.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(Long.class),
                                    "<init>", "(J)V");
                        } else if (parameterType == TPointer16.class) {
                            if (debugMemory) {
                                mv.visitInsn(Opcodes.DUP);
                                loadImm(2);
                                mv.visitMethodInsn(Opcodes.INVOKESTATIC, runtimeContextInternalName,
                                        "debugMemory", "(II)V");
                            }
                            mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, memoryInternalName, "read16", "(I)I");
                            mv.visitTypeInsn(Opcodes.NEW, Type.getInternalName(Integer.class));
                            mv.visitInsn(Opcodes.DUP_X1);
                            mv.visitInsn(Opcodes.SWAP);
                            mv.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(Integer.class),
                                    "<init>", "(I)V");
                        } else {
                            if (debugMemory) {
                                mv.visitInsn(Opcodes.DUP);
                                loadImm(4);
                                mv.visitMethodInsn(Opcodes.INVOKESTATIC, runtimeContextInternalName,
                                        "debugMemory", "(II)V");
                            }
                            mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, memoryInternalName, "read32", "(I)I");
                            mv.visitTypeInsn(Opcodes.NEW, Type.getInternalName(Integer.class));
                            mv.visitInsn(Opcodes.DUP_X1);
                            mv.visitInsn(Opcodes.SWAP);
                            mv.visitMethodInsn(Opcodes.INVOKESPECIAL, Type.getInternalName(Integer.class),
                                    "<init>", "(I)V");
                        }
                        break;
                    default:
                        log.error(String.format("Unimplemented lengthInfo=%s", lengthInfo));
                        break;
                    }

                    if (useMemoryDump) {
                        if (debugMemory) {
                            mv.visitInsn(Opcodes.DUP2);
                            mv.visitMethodInsn(Opcodes.INVOKESTATIC, runtimeContextInternalName, "debugMemory",
                                    "(II)V");
                        }
                        mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(Utilities.class),
                                "getMemoryDump", "(II)" + Type.getDescriptor(String.class));
                    }
                    mv.visitInsn(Opcodes.AASTORE);

                    mv.visitLdcInsn(format);
                    mv.visitInsn(Opcodes.SWAP);
                    mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(String.class), "format",
                            "(" + Type.getDescriptor(String.class) + "[" + Type.getDescriptor(Object.class)
                                    + ")" + Type.getDescriptor(String.class));
                    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Logger.class), loggingLevel,
                            "(" + Type.getDescriptor(Object.class) + ")V");
                    mv.visitJumpInsn(Opcodes.GOTO, done);

                    mv.visitLabel(addressNull);
                    mv.visitInsn(Opcodes.POP);
                    mv.visitInsn(Opcodes.POP2);
                    mv.visitInsn(Opcodes.POP2);
                    mv.visitLabel(done);
                }

                if (!parameterRead) {
                    if (parameterType == long.class) {
                        parameterReader.skipNextLong();
                    } else if (parameterType == float.class) {
                        parameterReader.skipNextFloat();
                    } else {
                        parameterReader.skipNextInt();
                    }
                }
            }
        }
    }

    mv.visitLabel(notDebug);
}

From source file:jpcsp.Allegrex.compiler.CompilerContext.java

License:Open Source License

/**
 * Generate the required Java code to call a syscall function.
 * The code generated must match the Java behavior implemented in
 * jpcsp.HLE.modules.HLEModuleFunctionReflection
 *
 * The following code is generated://  w  ww.jav  a2  s. com
 *     if (func.getFirmwareVersion() <= RuntimeContext.firmwareVersion) {
 *         if (!fastSyscall) {
 *             RuntimeContext.preSyscall();
 *         }
 *         if (func.checkInsideInterrupt()) {
 *             if (IntrManager.getInstance.isInsideInterrupt()) {
 *                 cpu.gpr[_v0] = SceKernelErrors.ERROR_KERNEL_CANNOT_BE_CALLED_FROM_INTERRUPT;
 *                 goto afterSyscall;
 *             }
 *         }
 *         if (func.checkDispatchThreadEnabled()) {
 *             if (!Modules.ThreadManForUserModule.isDispatchThreadEnabled()) {
 *                 cpu.gpr[_v0] = SceKernelErrors.ERROR_KERNEL_WAIT_CAN_NOT_WAIT;
 *                 goto afterSyscall;
 *             }
 *         }
 *         if (func.isUnimplemented()) {
 *             Modules.getLogger(func.getModuleName()).warn("Unimplemented <function name> parameterName1=parameterValue1, parameterName2=parameterValue2, ...");
 *         }
 *         foreach parameter {
 *             loadParameter(parameter);
 *         }
 *         try {
 *             returnValue = <module name>.<function name>(...parameters...);
 *             storeReturnValue();
 *             if (parameterReader.hasErrorPointer()) {
 *                 errorPointer.setValue(0);
 *             }
 *         } catch (SceKernelErrorException e) {
 *             errorCode = e.errorCode;
 *             if (Modules.getLogger(func.getModuleName()).isDebugEnabled()) {
 *                 Modules.getLogger(func.getModuleName()).debug(String.format("<function name> return errorCode 0x%08X", errorCode));
 *             }
 *             if (parameterReader.hasErrorPointer()) {
 *                 errorPointer.setValue(errorCode);
 *                 cpu.gpr[_v0] = 0;
 *             } else {
 *                 cpu.gpr[_v0] = errorCode;
 *             }
 *             reload cpu.gpr[_ra]; // an exception is always clearing the whole stack
 *         }
 *         afterSyscall:
 *         if (fastSyscall) {
 *             RuntimeContext.postSyscallFast();
 *         } else {
 *             RuntimeContext.postSyscall();
 *         }
 *     } else {
 *         Modules.getLogger(func.getModuleName()).warn("<function name> is not supported in firmware version <firmwareVersion>, it requires at least firmware version <function firmwareVersion>");
 *         cpu.gpr[_v0] = -1;
 *     }
 *
 * @param func         the syscall function
 * @param fastSyscall  true if this is a fast syscall (i.e. without context switching)
 *                     false if not (i.e. a syscall where context switching could happen)
 */
private void visitSyscall(HLEModuleFunction func, boolean fastSyscall) {
    // The compilation of a syscall requires more stack size than usual
    maxStackSize = SYSCALL_MAX_STACK_SIZE;

    boolean needFirmwareVersionCheck = true;
    if (func.getFirmwareVersion() >= 999) {
        // Dummy version number meaning valid for all versions
        needFirmwareVersionCheck = false;
    } else if (isCodeInstructionInKernelMemory()) {
        // When compiling code in the kernel memory space, do not perform any version check.
        // This is used by overwritten HLE functions.
        needFirmwareVersionCheck = false;
    } else {
        // When compiling code loaded from flash0, do not perform any version check.
        // This is used by overwritten HLE functions.
        SceModule module = Managers.modules.getModuleByAddress(codeInstruction.getAddress());
        if (module != null && module.pspfilename != null && module.pspfilename.startsWith("flash0:")) {
            if (log.isDebugEnabled()) {
                log.debug(String.format("syscall from a flash0 module(%s, '%s'), no firmware version check",
                        module, module.pspfilename));
            }
            needFirmwareVersionCheck = false;
        }
    }

    Label unsupportedVersionLabel = null;
    if (needFirmwareVersionCheck) {
        unsupportedVersionLabel = new Label();
        loadImm(func.getFirmwareVersion());
        mv.visitFieldInsn(Opcodes.GETSTATIC, runtimeContextInternalName, "firmwareVersion", "I");
        mv.visitJumpInsn(Opcodes.IF_ICMPGT, unsupportedVersionLabel);
    }

    // Save the syscall parameter to locals for debugging
    if (!fastSyscall) {
        saveParametersToLocals();
    }

    if (!fastSyscall) {
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, runtimeContextInternalName, "preSyscall", "()V");
    }

    Label afterSyscallLabel = new Label();

    if (func.checkInsideInterrupt()) {
        // if (IntrManager.getInstance().isInsideInterrupt()) {
        //     if (Modules.getLogger(func.getModuleName()).isDebugEnabled()) {
        //         Modules.getLogger(func.getModuleName()).debug("<function name> return errorCode 0x80020064 (ERROR_KERNEL_CANNOT_BE_CALLED_FROM_INTERRUPT)");
        //     }
        //     cpu.gpr[_v0] = SceKernelErrors.ERROR_KERNEL_CANNOT_BE_CALLED_FROM_INTERRUPT;
        //     goto afterSyscall
        // }
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(IntrManager.class), "getInstance",
                "()" + Type.getDescriptor(IntrManager.class));
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(IntrManager.class), "isInsideInterrupt",
                "()Z");
        Label notInsideInterrupt = new Label();
        mv.visitJumpInsn(Opcodes.IFEQ, notInsideInterrupt);

        loadModuleLoggger(func);
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Logger.class), "isDebugEnabled", "()Z");
        Label notDebug = new Label();
        mv.visitJumpInsn(Opcodes.IFEQ, notDebug);
        loadModuleLoggger(func);
        mv.visitLdcInsn(
                String.format("%s returning errorCode 0x%08X (ERROR_KERNEL_CANNOT_BE_CALLED_FROM_INTERRUPT)",
                        func.getFunctionName(), SceKernelErrors.ERROR_KERNEL_CANNOT_BE_CALLED_FROM_INTERRUPT));
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Logger.class), "debug",
                "(" + Type.getDescriptor(Object.class) + ")V");
        mv.visitLabel(notDebug);

        storeRegister(_v0, SceKernelErrors.ERROR_KERNEL_CANNOT_BE_CALLED_FROM_INTERRUPT);
        mv.visitJumpInsn(Opcodes.GOTO, afterSyscallLabel);
        mv.visitLabel(notInsideInterrupt);
    }

    if (func.checkDispatchThreadEnabled()) {
        // if (!Modules.ThreadManForUserModule.isDispatchThreadEnabled() || !Interrupts.isInterruptsEnabled()) {
        //     if (Modules.getLogger(func.getModuleName()).isDebugEnabled()) {
        //         Modules.getLogger(func.getModuleName()).debug("<function name> return errorCode 0x800201A7 (ERROR_KERNEL_WAIT_CAN_NOT_WAIT)");
        //     }
        //     cpu.gpr[_v0] = SceKernelErrors.ERROR_KERNEL_WAIT_CAN_NOT_WAIT;
        //     goto afterSyscall
        // }
        loadModule("ThreadManForUser");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(ThreadManForUser.class),
                "isDispatchThreadEnabled", "()Z");
        Label returnError = new Label();
        mv.visitJumpInsn(Opcodes.IFEQ, returnError);
        loadProcessor();
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Processor.class), "isInterruptsEnabled",
                "()Z");
        Label noError = new Label();
        mv.visitJumpInsn(Opcodes.IFNE, noError);

        mv.visitLabel(returnError);
        loadModuleLoggger(func);
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Logger.class), "isDebugEnabled", "()Z");
        Label notDebug = new Label();
        mv.visitJumpInsn(Opcodes.IFEQ, notDebug);
        loadModuleLoggger(func);
        mv.visitLdcInsn(String.format("%s returning errorCode 0x%08X (ERROR_KERNEL_WAIT_CAN_NOT_WAIT)",
                func.getFunctionName(), SceKernelErrors.ERROR_KERNEL_WAIT_CAN_NOT_WAIT));
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Logger.class), "debug",
                "(" + Type.getDescriptor(Object.class) + ")V");
        mv.visitLabel(notDebug);

        storeRegister(_v0, SceKernelErrors.ERROR_KERNEL_WAIT_CAN_NOT_WAIT);
        mv.visitJumpInsn(Opcodes.GOTO, afterSyscallLabel);
        mv.visitLabel(noError);
    }

    logSyscallStart(func);

    if (func.hasStackUsage()) {
        loadMemory();
        loadRegister(_sp);
        loadImm(func.getStackUsage());
        mv.visitInsn(Opcodes.ISUB);
        loadImm(0);
        loadImm(func.getStackUsage());
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, memoryInternalName, "memset", "(IBI)V");
    }

    // Collecting the parameters and calling the module function...
    CompilerParameterReader parameterReader = new CompilerParameterReader(this);

    loadModule(func.getModuleName());
    parameterReader.incrementCurrentStackSize();

    Label tryStart = new Label();
    Label tryEnd = new Label();
    Label catchSceKernelErrorException = new Label();
    mv.visitTryCatchBlock(tryStart, tryEnd, catchSceKernelErrorException,
            Type.getInternalName(SceKernelErrorException.class));

    Class<?>[] parameterTypes = func.getHLEModuleMethod().getParameterTypes();
    Class<?> returnType = func.getHLEModuleMethod().getReturnType();
    StringBuilder methodDescriptor = new StringBuilder();
    methodDescriptor.append("(");

    Annotation[][] paramsAnotations = func.getHLEModuleMethod().getParameterAnnotations();
    int paramIndex = 0;
    for (Class<?> parameterType : parameterTypes) {
        methodDescriptor.append(Type.getDescriptor(parameterType));
        loadParameter(parameterReader, func, parameterType, paramsAnotations[paramIndex], afterSyscallLabel,
                catchSceKernelErrorException);
        paramIndex++;
    }
    methodDescriptor.append(")");
    methodDescriptor.append(Type.getDescriptor(returnType));

    mv.visitLabel(tryStart);

    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL,
            Type.getInternalName(func.getHLEModuleMethod().getDeclaringClass()), func.getFunctionName(),
            methodDescriptor.toString());

    storeReturnValue(func, returnType);

    if (parameterReader.hasErrorPointer()) {
        // errorPointer.setValue(0);
        mv.visitVarInsn(Opcodes.ALOAD, LOCAL_ERROR_POINTER);
        loadImm(0);
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(TErrorPointer32.class), "setValue",
                "(I)V");
    }

    loadRegister(_v0);
    logSyscallEnd(func, false);
    mv.visitInsn(Opcodes.POP);

    mv.visitLabel(tryEnd);
    mv.visitJumpInsn(Opcodes.GOTO, afterSyscallLabel);

    // catch (SceKernelErrorException e) {
    //     errorCode = e.errorCode;
    //     if (Modules.log.isDebugEnabled()) {
    //         Modules.log.debug(String.format("<function name> return errorCode 0x%08X", errorCode));
    //     }
    //     if (hasErrorPointer()) {
    //         errorPointer.setValue(errorCode);
    //         cpu.gpr[_v0] = 0;
    //     } else {
    //         cpu.gpr[_v0] = errorCode;
    //     }
    // }
    mv.visitLabel(catchSceKernelErrorException);
    mv.visitFieldInsn(Opcodes.GETFIELD, Type.getInternalName(SceKernelErrorException.class), "errorCode", "I");
    logSyscallEnd(func, true);
    if (parameterReader.hasErrorPointer()) {
        // errorPointer.setValue(errorCode);
        // cpu.gpr[_v0] = 0;
        mv.visitVarInsn(Opcodes.ALOAD, LOCAL_ERROR_POINTER);
        mv.visitInsn(Opcodes.SWAP);
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(TErrorPointer32.class), "setValue",
                "(I)V");
        storeRegister(_v0, 0);
    } else {
        // cpu.gpr[_v0] = errorCode;
        storeRegister(_v0);
    }

    // Reload the $ra register, the stack is lost after an exception
    CodeInstruction previousInstruction = codeBlock.getCodeInstruction(codeInstruction.getAddress() - 4);
    if (previousInstruction != null && previousInstruction.getInsn() == Instructions.JR) {
        int jumpRegister = (previousInstruction.getOpcode() >> 21) & 0x1F;
        loadRegister(jumpRegister);
    }

    mv.visitLabel(afterSyscallLabel);

    if (fastSyscall) {
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, runtimeContextInternalName, "postSyscallFast", "()V");
    } else {
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, runtimeContextInternalName, "postSyscall", "()V");
    }

    if (needFirmwareVersionCheck) {
        Label afterVersionCheckLabel = new Label();
        mv.visitJumpInsn(Opcodes.GOTO, afterVersionCheckLabel);

        mv.visitLabel(unsupportedVersionLabel);
        loadModuleLoggger(func);
        mv.visitLdcInsn(String.format(
                "%s is not supported in firmware version %d, it requires at least firmware version %d",
                func.getFunctionName(), RuntimeContext.firmwareVersion, func.getFirmwareVersion()));
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Logger.class), "warn",
                "(" + Type.getDescriptor(Object.class) + ")V");
        storeRegister(_v0, -1);

        mv.visitLabel(afterVersionCheckLabel);
    }
}