X-Git-Url: http://svarog.pmf.uns.ac.rs/gitweb/?p=mjc2wsl.git;a=blobdiff_plain;f=src%2Fmjc2wsl.java;h=886cd7d3ba0588bb4f413d5362e8e378c1b045e3;hp=521be052fffd8f23a56a4537793fc4a85227245d;hb=ec3c740bef0052321dad7949b470f3bdc6d6bc03;hpb=dd4a6268bba13afdda7ccd40d82a5955ef56eb7d diff --git a/src/mjc2wsl.java b/src/mjc2wsl.java index 521be05..886cd7d 100644 --- a/src/mjc2wsl.java +++ b/src/mjc2wsl.java @@ -10,8 +10,32 @@ import java.util.*; * @author Doni Pracner, http://perun.dmi.rs/pracner http://quemaster.com */ public class mjc2wsl{ - public static String versionN = "0.1.2"; + public static String versionN = "0.1.4"; + public static final int M_ERR = 2, M_WAR = 1, M_DEB = 0; + + private int printLevel = M_ERR; + + private int[] messageCounters = new int[M_ERR+1]; + + private void message(String mes, int level){ + if (level>=printLevel) + System.out.println(mes); + messageCounters[level]++; + } + + private void printMessageCounters(){ + printMessageCounters(System.out); + } + + private void printMessageCounters(PrintStream out){ + out.println("total errors:"+messageCounters[M_ERR]+" warnings:"+messageCounters[M_WAR]); + } + + private boolean addPauseAfterEachAddress=false, + addPrintForEachAddress = false, + genPrintEStackOnChange = false; + /** Constant used for marking a regular comment from the original file */ public static final char C_REG = ' '; /** @@ -89,10 +113,12 @@ public class mjc2wsl{ "C:\" This file automatically converted from microjava bytecode\";\n" +"C:\" with mjc2wsl v "+versionN+"\";\n"); - ret.append("VAR < tempa := 0, tempb := 0, tempres :=0,\n"); + ret.append("VAR < tempa := 0, tempb := 0, tempres :=0,\n\t"); for (int i = 0; i <= 3; i++) - ret.append("loc" + i + " := 0, "); - ret.append("\n estack := < >, t_e_m_p := 0 > :"); + ret.append(loc(i) + " := 0, "); + ret.append("\n mjvm_estack := < >, mjvm_mstack := < >, "); + ret.append("\n mjvm_fp := 0, mjvm_sp := 0,"); + ret.append("\n t_e_m_p := 0 > :"); return ret.toString(); } @@ -103,6 +129,38 @@ public class mjc2wsl{ private boolean originalInComments = false; + private HashMap opMap = null; + + private String opCodeFile = "mj-bytecodes.properties"; + + private HashMap getOpMap() { + if (opMap==null) { + opMap = new HashMap (60, 0.98f); + try{ + BufferedReader in = new BufferedReader( + new InputStreamReader(getClass().getResourceAsStream(opCodeFile))); + String str = in.readLine(); + while (str != null) { + String[] ss = str.split("="); + opMap.put(Integer.parseInt(ss[0]),ss[1]); + str = in.readLine(); + } + in.close(); + }catch (Exception ex) { + ex.printStackTrace(); + } + } + return opMap; + } + + public String getOpString(int op) { + return getOpMap().get(op); + } + + public String describeOpCode(int op) { + return op + " (" + getOpString(op) + ")"; + } + private InputStream mainIn; private PrintWriter out = null; private int counter = -1; @@ -145,7 +203,7 @@ public class mjc2wsl{ } private String loc(int i){ - return "loc" + i; + return "mjvm_loc" + i; } /** @@ -166,16 +224,24 @@ public class mjc2wsl{ return "C:\"" + type + str.replace("\"", "''") + "\";"; } + //Expression stack + private String cmdToEStack(int i) { - return "estack := <" + i + " > ++ estack;"; + String res = "mjvm_estack := <" + i + " > ++ mjvm_estack;"; + if (genPrintEStackOnChange) res +="PRINT(\"eStack\",mjvm_estack);"; + return res; } private String cmdToEStack(String i) { - return "estack := <" + i + " > ++ estack;"; + String res = "mjvm_estack := <" + i + " > ++ mjvm_estack;"; + if (genPrintEStackOnChange) res +="PRINT(\"eStack\",mjvm_estack);"; + return res; } private String cmdFromEStack(String st) { - return st + " := HEAD(estack); estack := TAIL(estack);"; + String res = st + " := HEAD(mjvm_estack); mjvm_estack := TAIL(mjvm_estack);"; + if (genPrintEStackOnChange) res +="PRINT(\"eStack\",mjvm_estack);"; + return res; } private String getTopTwo(){ @@ -186,10 +252,24 @@ public class mjc2wsl{ return cmdFromEStack("tempa"); } + //Method stack + + private String cmdToMStack(int i) { + return "mjvm_mstack := <" + i + " > ++ mjvm_mstack;"; + } + + private String cmdToMStack(String i) { + return "mjvm_mstack := <" + i + " > ++ mjvm_mstack;"; + } + + private String cmdFromMStack(String st) { + return st + " := HEAD(mjvm_mstack); mjvm_mstack := TAIL(mjvm_mstack);"; + } + private String getRelationFor(int opcode) throws Exception { switch (opcode) { case jeq: return "="; - case jne: return "#"; + case jne: return "<>"; case jlt: return "<"; case jle: return "<="; case jgt: return ">"; @@ -197,20 +277,34 @@ public class mjc2wsl{ } throw new Exception("Wrong opcode for a relation"); } + + private boolean isJumpCode(int opcode) { + return (opcode>=jmp) && (opcode<=jge); + } public void convertStream(InputStream ins) throws Exception{ mainIn = ins; - //skip start TODO make better - for (int i = 0; i < 14; i++) - get(); + //process start + byte m = (byte) get(); + byte j = (byte) get(); + if (m!='M' || j !='J') + throw new Exception("Wrong start of bytecode file"); + int codesize = get4(); + int numberOfWords = get4(); + int mainAdr = get4(); prl(getStandardStart()); - prl("SKIP;\n ACTIONS A_S_start:\n A_S_start == CALL a14 END"); + prl("SKIP;\n ACTIONS A_S_start:\n A_S_start == CALL a"+(14+mainAdr)+" END"); int op = get(); while (op >= 0) { if (originalInComments) - prl(createComment("" + op, C_OC)); + prl(createComment(describeOpCode(op), C_OC)); prl("a" + counter + " == "); + if (addPrintForEachAddress) { + prl("PRINT(\"a"+counter+"\");"); + if (addPauseAfterEachAddress) + prl("debug_disposable_string := @Read_Line(Standard_Input_Port);"); + } switch (op) { case load: { prl(cmdToEStack(loc(get()))); @@ -234,6 +328,10 @@ public class mjc2wsl{ prl(cmdFromEStack(loc(op - store_0))); break; } + + //TODO getstatic, putstatic + //TODO getfield, putfield + case const_: { prl(cmdToEStack(get4())); break; @@ -249,6 +347,45 @@ public class mjc2wsl{ break; } + case add: { + prl(getTopTwo()); + prl("tempres := tempb + tempa;"); + prl(cmdToEStack("tempres")); + break; + } + case sub: { + prl(getTopTwo()); + prl("tempres := tempb - tempa;"); + prl(cmdToEStack("tempres")); + break; + } + case mul: { + prl(getTopTwo()); + prl("tempres := tempb * tempa;"); + prl(cmdToEStack("tempres")); + break; + } + case div: { + prl(getTopTwo()); + prl("IF tempa = 0 THEN ERROR(\"division by zero\") FI;"); + prl("tempres := tempb DIV tempa;"); + prl(cmdToEStack("tempres")); + break; + } + case rem: { + prl(getTopTwo()); + prl("IF tempa = 0 THEN ERROR(\"division by zero\") FI;"); + prl("tempres := tempb MOD tempa;"); + prl(cmdToEStack("tempres")); + break; + } + + //TODO neg, shl, shr, inc + //TODO new_ newarray + //TODO aload, asstore, baload, bastore + //TODO arraylength + //TODO pop, dup, dup2 + case jmp: { prl("CALL a" + (counter + get2()) + ";"); break; @@ -263,35 +400,45 @@ public class mjc2wsl{ prl(getTopTwo()); prl("IF tempb "+ getRelationFor(op) +" tempa THEN CALL a" + (counter + get2()) + +" ELSE CALL a" + (counter+1) + " FI;"); break; } - case add: { - prl(getTopTwo()); - prl("tempres := tempb + tempa;"); - prl(cmdToEStack("tempres")); + case call: { + prl(cmdToMStack(counter+2)); + prl("CALL a" + (counter + get2()) + ";"); break; } - case div: { - prl(getTopTwo()); - prl("tempres := tempb / tempa;"); - prl(cmdToEStack("tempres")); + + case return_: { + prl("IF EMPTY?(mjvm_mstack) THEN CALL Z ELSE"); + //else we let things return + prl(cmdFromMStack("tempa")); + prl("SKIP FI"); + prl("END b"+counter+" =="); break; } - case enter: { prl(createComment("enter not fully procesed yet")); + message("enter not fully procesed yet", M_WAR); + int parameters = get(); + get(); - get(); - break; - } - case return_: { - prl(createComment("return not fully procesed yet")); + for (int i = parameters-1; i >= 0; i--) + prl(cmdFromEStack(loc(i))); break; } case exit: { prl(createComment("exit not fully procesed yet")); + message("exit not fully procesed yet", M_WAR); + break; + } + + //TODO read, print + case read: { + prl("tempa := @String_To_Num(@Read_Line(Standard_Input_Port));"); + prl(cmdToEStack("tempa")); break; } @@ -307,14 +454,26 @@ public class mjc2wsl{ prl("PRINT(tempb);"); break; } + + case trap: { + prl("ERROR(\"Runtime error: trap("+get()+")\");"); + break; + } + + default: prl(createComment("unknown op error: " + op, C_ERR)); + message("unknown op error: "+ op, M_ERR); break; } + boolean wasJump = isJumpCode(op); op = get(); if (op >= 0) - prl("CALL a" + counter + " END"); + if (wasJump) + prl("SKIP END"); + else + prl("CALL a" + counter + " END"); } prl("CALL Z;\nSKIP END\nENDACTIONS;\n"); prl(getStandardEnd()); @@ -334,7 +493,10 @@ public class mjc2wsl{ + ", by Doni Pracner"); System.out.println("usage:\n\t {options} mjc2wsl filename [outfile]"); System.out.println("options:\n\t--screen print output to screen"); - System.out.println("\t-o --oc include original code in comments"); + System.out.println("\t-o --oc[+-] include original code in comments"); + System.out.println("\t-v verbose, print warning messages"); + System.out.println("\t-q don't print even the error messages"); + System.out.println("\t-d print detailed debug messages"); } public String makeDefaultOutName(String inname){ @@ -361,10 +523,21 @@ public class mjc2wsl{ originalInComments = args[i].charAt(4) == '+'; else originalInComments = true; - } else if (args[i].startsWith("--screen")) { + } else if (args[i].compareTo("--screen") == 0) { out = new PrintWriter(System.out); - } - i++; + } else if (args[i].compareTo("-d") == 0) { + printLevel = M_DEB;//print debug info + } else if (args[i].compareTo("-v") == 0) { + printLevel = M_WAR;//print warnings + } else if (args[i].compareTo("-q") == 0) { + printLevel = M_ERR+1;//no printing + } else if (args[i].compareToIgnoreCase("--genEStackPrint") == 0) { + genPrintEStackOnChange = true; + } else if (args[i].compareToIgnoreCase("--genAll") == 0) { + genPrintEStackOnChange = true; + addPrintForEachAddress = true; + addPauseAfterEachAddress = true; + }i++; } if (i >= args.length) { @@ -396,6 +569,7 @@ public class mjc2wsl{ long mili = Calendar.getInstance().getTimeInMillis() - now.getTimeInMillis(); System.out.println("conversion time:" + mili + " ms"); + printMessageCounters(); out.close(); } else System.out.println("file does not exist");