Support rv64

src/PseudoOps-64.txt

@@ -0,0 +1,19 @@
+# Templates that override 32 bit templates in the case that the 32 bit version doesn't work
+# This needs to be here because it should have priority over the other li's
+li t1,-100     ;addi RG1, x0, VL2                ;#Load Immediate : Set t1 to 12-bit immediate (sign-extended)
+# This needs to be here because addi is not correct and addiw does not work in rv32
+li t1,10000000 ;lui RG1, VH2 ;addiw RG1, RG1, VL2 ;#Load Immediate : Set t1 to 32-bit immediate (sign-extended)
+# Please don't try to use LIX1 templates, they are pretty brittle and very specific to li
+# This is a pretty complex template, but it is actually simpler than what gcc uses. gcc seems to actually optimize it per immediate.
+li t1,1000000000000000 ;lui RG1, LIA2 ;addiw RG1, RG1, LIB2 ;slli RG1, RG1, 11 ;addi RG1, RG1, LIC2 ;slli RG1, RG1, 11 ;addi RG1, RG1, LID2 ;slli RG1, RG1, 10 ;addi RG1, RG1, LIE2 ;#Load Immediate : Set t1 to 64-bit immediate
+
+fcvt.s.lu f1, t1         ; fcvt.s.lu RG1, RG2, dyn         ;#Convert float from unsigned 64 bit integer: Assigns the value of t1 to f1
+fcvt.s.l  f1, t1         ; fcvt.s.l  RG1, RG2, dyn         ;#Convert float from signed 64 bit integer: Assigns the value of t1 to f1
+fcvt.l.s  t1, f1         ; fcvt.l.s  RG1, RG2, dyn         ;#Convert signed 64 bit integer from float: Assigns the value of f1 (rounded) to t1
+fcvt.lu.s t1, f1         ; fcvt.lu.s RG1, RG2, dyn         ;#Convert unsigned 64 bit integer from float: Assigns the value of f1 (rounded) to t1
+
+
+fcvt.d.lu f1, t1         ; fcvt.d.lu RG1, RG2, dyn         ;#Convert double from unsigned 64 bit integer: Assigns the value of t1 to f1
+fcvt.d.l  f1, t1         ; fcvt.d.l  RG1, RG2, dyn         ;#Convert double from signed 64 bit integer: Assigns the value of t1 to f1
+fcvt.l.d  t1, f1         ; fcvt.l.d  RG1, RG2, dyn         ;#Convert signed 64 bit integer from double: Assigns the value of f1 (rounded) to t1
+fcvt.lu.d t1, f1         ; fcvt.lu.d RG1, RG2, dyn         ;#Convert unsigned 64 bit integer from double: Assigns the value of f1 (rounded) to t1

src/PseudoOps.txt

@@ -121,7 +121,6 @@ tail label     ;auipc x6,PCH1    ;jalr x0, x6, PCL1;#TAIL call: tail call (call
 
 li t1,-100     ;addi RG1, x0, VL2                ;#Load Immediate : Set t1 to 12-bit immediate (sign-extended)
 li t1,10000000 ;lui RG1, VH2 ;addi RG1, RG1, VL2 ;#Load Immediate : Set t1 to 32-bit immediate
-
 la t1,label  ;auipc RG1, PCH2 ; addi RG1, RG1, PCL2;#Load Address : Set t1 to label's address
 
 lw t1,(t2)     ;lw RG1,0(RG3)   ;#Load Word : Set t1 to contents of effective memory word address

src/rars/Globals.java

@@ -167,10 +167,10 @@ public static Settings getSettings() {
     public static void initialize(boolean gui) {
         if (!initialized) {
             memory = Memory.getInstance();  //clients can use Memory.getInstance instead of Globals.memory
-            instructionSet = new InstructionSet();
-            instructionSet.populate();
             symbolTable = new SymbolTable("global");
             settings = new Settings(gui);
+            instructionSet = new InstructionSet();
+            instructionSet.populate();
             initialized = true;
             debug = false;
             memory.clear(); // will establish memory configuration from setting

src/rars/Launch.java

@@ -1,6 +1,7 @@
 package rars;
 
 import rars.api.Program;
+import rars.riscv.InstructionSet;
 import rars.riscv.dump.DumpFormat;
 import rars.riscv.dump.DumpFormatLoader;
 import rars.riscv.hardware.*;
@@ -109,6 +110,7 @@ public class Launch {
 
     private Options options;
     private boolean simulate;
+    private boolean rv64;
     private int displayFormat;
     private boolean verbose;  // display register name or address along with contents
     private boolean assembleProject; // assemble only the given file or all files in its directory
@@ -374,6 +376,10 @@ private boolean parseCommandArgs(String[] args) {
                 options.selfModifyingCode = true;
                 continue;
             }
+            if (args[i].toLowerCase().equals("rv64")) {
+                rv64 = true;
+                continue;
+            }
             if (args[i].toLowerCase().equals("ic")) { // added 19-Jul-2012 DPS
                 countInstructions = true;
                 continue;
@@ -435,6 +441,10 @@ private Program runCommand() {
             return null;
         }
 
+        Globals.getSettings().setBooleanSettingNonPersistent(Settings.Bool.RV64_ENABLED,rv64);
+        InstructionSet.rv64 = rv64;
+        Globals.instructionSet.populate();
+
         File mainFile = new File(filenameList.get(0)).getAbsoluteFile();// First file is "main" file
         ArrayList<String> filesToAssemble;
         if (assembleProject) {
@@ -718,6 +728,7 @@ private void displayHelp() {
         out.println("  se<n>  -- terminate RARS with integer exit code <n> if a simulation (run) error occurs.");
         out.println("     sm  -- start execution at statement with global label main, if defined");
         out.println("    smc  -- Self Modifying Code - Program can write and branch to either text or data segment");
+        out.println("    rv64 -- Enables 64 bit assembly and executables (Not fully compatible with rv32)");
         out.println("    <n>  -- where <n> is an integer maximum count of steps to simulate.");
         out.println("            If 0, negative or not specified, there is no maximum.");
         out.println(" x<reg>  -- where <reg> is number or name (e.g. 5, t3, f10) of register whose ");

src/rars/ProgramStatement.java

@@ -298,7 +298,7 @@ public void buildBasicStatementFromBasicInstruction(ErrorList errors) {
                     basicStatementList.addValue(address);
                 }
                 this.operands[this.numOperands++] = address;
-            } else if (tokenType == TokenTypes.INTEGER_5 || tokenType == TokenTypes.INTEGER_12 ||
+            } else if (tokenType == TokenTypes.INTEGER_5 || tokenType == TokenTypes.INTEGER_6 || tokenType == TokenTypes.INTEGER_12 ||
                     tokenType == TokenTypes.INTEGER_20 || tokenType == TokenTypes.INTEGER_32) {
 
                 int tempNumeric = Binary.stringToInt(tokenValue);

src/rars/Settings.java

@@ -147,7 +147,11 @@ public enum Bool {
          * Flag to determine whether a program can write binary code to the text or data segment and
          * execute that code.
          */
-        SELF_MODIFYING_CODE_ENABLED("SelfModifyingCode", false);
+        SELF_MODIFYING_CODE_ENABLED("SelfModifyingCode", false),
+        /**
+         * Flag to determine whether a program uses rv64i instead of rv32i
+         */
+        RV64_ENABLED("rv64Enabled", false);;
 
         // TODO: add option for turning off user trap handling and interrupts
         private String name;

src/rars/assembler/Assembler.java

@@ -665,7 +665,7 @@ private void executeDirective(TokenList tokens) {
             }
         } else if (direct == Directives.WORD || direct == Directives.HALF
                 || direct == Directives.BYTE || direct == Directives.FLOAT
-                || direct == Directives.DOUBLE) {
+                || direct == Directives.DOUBLE || direct == Directives.DWORD ) {
             this.dataDirective = direct;
             if (passesDataSegmentCheck(token) && tokens.size() > 1) { // DPS
                 // 11/20/06, added text segment prohibition
@@ -804,7 +804,7 @@ private void transferGlobals() {
     private void executeDirectiveContinuation(TokenList tokens) {
         Directives direct = this.dataDirective;
         if (direct == Directives.WORD || direct == Directives.HALF || direct == Directives.BYTE
-                || direct == Directives.FLOAT || direct == Directives.DOUBLE) {
+                || direct == Directives.FLOAT || direct == Directives.DOUBLE || direct == Directives.DWORD ) {
             if (tokens.size() > 0) {
                 storeNumeric(tokens, direct, errors);
             }
@@ -921,7 +921,28 @@ private void storeNumeric(TokenList tokens, Directives directive, ErrorList erro
     private void storeInteger(Token token, Directives directive, ErrorList errors) {
         int lengthInBytes = DataTypes.getLengthInBytes(directive);
         if (TokenTypes.isIntegerTokenType(token.getType())) {
-            int value = Binary.stringToInt(token.getValue());
+            int value;
+            long longvalue;
+            if (TokenTypes.INTEGER_64 == token.getType()) {
+                longvalue = Binary.stringToLong(token.getValue());
+                value = (int)longvalue;
+                if (directive != Directives.DWORD){
+                    errors.add(new ErrorMessage(ErrorMessage.WARNING, token.getSourceProgram(), token.getSourceLine(),
+                            token.getStartPos(), "value " + Binary.longToHexString(longvalue)
+                            + " is out-of-range and truncated to " + Binary.intToHexString(value)));
+                }
+            }else{
+                value = Binary.stringToInt(token.getValue());
+                longvalue = value;
+            }
+
+            if (directive == Directives.DWORD){
+                writeToDataSegment((int)longvalue, 4, token, errors);
+                writeToDataSegment((int)(longvalue>>32), 4, token, errors);
+                return;
+            }
+
+
             int fullvalue = value;
             // DPS 4-Jan-2013.  Overriding 6-Jan-2005 KENV changes.
             // If value is out of range for the directive, will simply truncate

src/rars/assembler/DataTypes.java

@@ -123,6 +123,8 @@ public static int getLengthInBytes(Directives direct) {
             return FLOAT_SIZE;
         else if (direct == Directives.DOUBLE)
             return DOUBLE_SIZE;
+        else if (direct == Directives.DWORD)
+            return 2*WORD_SIZE;
         else if (direct == Directives.WORD)
             return WORD_SIZE;
         else if (direct == Directives.HALF)

src/rars/assembler/Directives.java

@@ -46,6 +46,7 @@ public final class Directives {
     public static final Directives DATA = new Directives(".data", "Subsequent items stored in Data segment at next available address");
     public static final Directives TEXT = new Directives(".text", "Subsequent items (instructions) stored in Text segment at next available address");
     public static final Directives WORD = new Directives(".word", "Store the listed value(s) as 32 bit words on word boundary");
+    public static final Directives DWORD = new Directives(".dword", "Store the listed value(s) as 64 bit double-word on word boundary");
     public static final Directives ASCII = new Directives(".ascii", "Store the string in the Data segment but do not add null terminator");
     public static final Directives ASCIZ = new Directives(".asciz", "Store the string in the Data segment and add null terminator");
     public static final Directives STRING = new Directives(".string", "Alias for .asciz");
@@ -162,7 +163,8 @@ public static ArrayList<Directives> getDirectiveList() {
      * @return true if given directive is WORD, HALF, or BYTE, false otherwise
      **/
     public static boolean isIntegerDirective(Directives direct) {
-        return direct == Directives.WORD || direct == Directives.HALF || direct == Directives.BYTE;
+        return direct == Directives.DWORD || direct == Directives.WORD || direct == Directives.HALF || direct == Directives.BYTE;
+
     }
 
 

src/rars/assembler/OperandFormat.java

@@ -128,19 +128,27 @@ private static boolean operandTypeCheck(TokenList cand, Instruction spec, ErrorL
                 continue;
             // TODO: this shouldn't really accept INTEGER_20, only unsigned 12 is ok
             if(specType == TokenTypes.CSR_NAME &&
-                    (candType==TokenTypes.INTEGER_5 || candType == TokenTypes.INTEGER_12
+                    (candType==TokenTypes.INTEGER_5 || candType==TokenTypes.INTEGER_6 || candType == TokenTypes.INTEGER_12
                             || candType ==TokenTypes.INTEGER_20 || candType == TokenTypes.CSR_NAME))
                 continue;
-            if ((specType == TokenTypes.INTEGER_12 && candType == TokenTypes.INTEGER_5) ||
+            if ((specType == TokenTypes.INTEGER_6 && candType == TokenTypes.INTEGER_5) ||
+                    (specType == TokenTypes.INTEGER_12 && candType == TokenTypes.INTEGER_5) ||
                     (specType == TokenTypes.INTEGER_20 && candType == TokenTypes.INTEGER_5) ||
+                    (specType == TokenTypes.INTEGER_12 && candType == TokenTypes.INTEGER_6) ||
+                    (specType == TokenTypes.INTEGER_20 && candType == TokenTypes.INTEGER_6) ||
                     (specType == TokenTypes.INTEGER_20 && candType == TokenTypes.INTEGER_12) ||
                     (specType == TokenTypes.INTEGER_32 && candType == TokenTypes.INTEGER_5) ||
+                    (specType == TokenTypes.INTEGER_32 && candType == TokenTypes.INTEGER_6) ||
                     (specType == TokenTypes.INTEGER_32 && candType == TokenTypes.INTEGER_12) ||
                     (specType == TokenTypes.INTEGER_32 && candType == TokenTypes.INTEGER_20))
                 continue;
-            if ((specType == TokenTypes.INTEGER_5 && candType == TokenTypes.INTEGER_12) ||
+            if ((specType == TokenTypes.INTEGER_5 && candType == TokenTypes.INTEGER_6) ||
+                    (specType == TokenTypes.INTEGER_5 && candType == TokenTypes.INTEGER_12) ||
                     (specType == TokenTypes.INTEGER_5 && candType == TokenTypes.INTEGER_20) ||
                     (specType == TokenTypes.INTEGER_5 && candType == TokenTypes.INTEGER_32) ||
+                    (specType == TokenTypes.INTEGER_6 && candType == TokenTypes.INTEGER_12) ||
+                    (specType == TokenTypes.INTEGER_6 && candType == TokenTypes.INTEGER_20) ||
+                    (specType == TokenTypes.INTEGER_6 && candType == TokenTypes.INTEGER_32) ||
                     (specType == TokenTypes.INTEGER_12 && candType == TokenTypes.INTEGER_20) ||
                     (specType == TokenTypes.INTEGER_12 && candType == TokenTypes.INTEGER_32) ||
                     (specType == TokenTypes.INTEGER_20 && candType == TokenTypes.INTEGER_32)) {

src/rars/assembler/TokenTypes.java

@@ -52,7 +52,7 @@ public enum TokenTypes {
     // TODO: merge REGISTER_NUMBER and REGISTER_NAME
     REGISTER_NAME, REGISTER_NUMBER, FP_REGISTER_NAME, CSR_NAME, ROUNDING_MODE,
     IDENTIFIER, LEFT_PAREN, RIGHT_PAREN,
-    INTEGER_5, INTEGER_12, INTEGER_20, INTEGER_32, REAL_NUMBER,
+    INTEGER_5, INTEGER_6, INTEGER_12, INTEGER_20, INTEGER_32, INTEGER_64, REAL_NUMBER,
     QUOTED_STRING,
     PLUS, MINUS, COLON,
     ERROR, MACRO_PARAMETER,
@@ -144,6 +144,7 @@ public static TokenTypes matchTokenType(String value) {
         // Classify based on # bits needed to represent in binary
         // This is needed because most immediate operands limited to 16 bits
         // others limited to 5 bits unsigned (shift amounts) others 32 bits.
+
         try {
 
             int i = Binary.stringToInt(value);   // KENV 1/6/05
@@ -154,6 +155,9 @@ public static TokenTypes matchTokenType(String value) {
             if (i >= 0 && i <= 31) {
                 return TokenTypes.INTEGER_5;
             }
+            if (i >= 0 && i <= 64) {
+                return TokenTypes.INTEGER_6;
+            }
             if (i >= DataTypes.MIN_IMMEDIATE_VALUE && i <= DataTypes.MAX_IMMEDIATE_VALUE) {
                 return TokenTypes.INTEGER_12;
             }
@@ -165,6 +169,13 @@ public static TokenTypes matchTokenType(String value) {
             // NO ACTION -- exception suppressed
         }
 
+        try {
+            Binary.stringToLong(value);
+            return TokenTypes.INTEGER_64;
+        } catch (NumberFormatException e) {
+            // NO ACTION -- exception suppressed
+        }
+
         // See if it is a real (fixed or floating point) number.  Note that parseDouble()
         // accepts integer values but if it were an integer literal we wouldn't get this far.
         if (value.equals("Inf") || value.equals("NaN")) return TokenTypes.REAL_NUMBER;
@@ -178,6 +189,7 @@ public static TokenTypes matchTokenType(String value) {
         }
 
 
+
         // See if it is a directive
         if (value.charAt(0) == '.' && Directives.matchDirective(value) != null) {
             return TokenTypes.DIRECTIVE;
@@ -209,8 +221,8 @@ public static TokenTypes matchTokenType(String value) {
      * @return true if type is an integer type, false otherwise.
      **/
     public static boolean isIntegerTokenType(TokenTypes type) {
-        return type == TokenTypes.INTEGER_5 || type == TokenTypes.INTEGER_12 ||
-                type == TokenTypes.INTEGER_20 || type == TokenTypes.INTEGER_32;
+        return type == TokenTypes.INTEGER_5 ||  type == TokenTypes.INTEGER_6 || type == TokenTypes.INTEGER_12 ||
+                type == TokenTypes.INTEGER_20 || type == TokenTypes.INTEGER_32 || type == TokenTypes.INTEGER_64;
     }
 
 

src/rars/extras/Documentation.java

@@ -1,12 +1,14 @@
 package rars.extras;
 
 import rars.Globals;
+import rars.Settings;
 import rars.assembler.Directives;
 import rars.riscv.*;
 
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;
+import java.util.HashSet;
 
 /**
  * Small class for automatically generating documentation.
@@ -23,6 +25,8 @@ public static void main(String[] args){
         System.out.println(createSyscallMarkdown());
         System.out.println(createInstructionMarkdown(BasicInstruction.class));
         System.out.println(createInstructionMarkdown(ExtendedInstruction.class));
+        System.out.println(createInstructionMarkdown64Only(BasicInstruction.class));
+        System.out.println(createInstructionMarkdown64Only(ExtendedInstruction.class));
     }
 
     public static String createDirectiveMarkdown(){
@@ -61,8 +65,13 @@ public static String createSyscallMarkdown(){
     }
 
     public static String createInstructionMarkdown(Class<? extends Instruction> instructionClass){
+        Globals.getSettings().setBooleanSettingNonPersistent(Settings.Bool.RV64_ENABLED,false);
+        InstructionSet.rv64 = false;
+        Globals.instructionSet.populate();
+
         ArrayList<Instruction> instructionList = Globals.instructionSet.getInstructionList();
         instructionList.sort(Comparator.comparing(Instruction::getExampleFormat));
+
         StringBuilder output = new StringBuilder("| Example Usage | Description |\n|---------------|-------------|");
         for (Instruction instr : instructionList) {
             if (instructionClass.isInstance(instr)) {
@@ -75,4 +84,33 @@ public static String createInstructionMarkdown(Class<? extends Instruction> inst
         }
         return output.toString();
     }
+    public static String createInstructionMarkdown64Only(Class<? extends Instruction> instructionClass){
+
+        Globals.getSettings().setBooleanSettingNonPersistent(Settings.Bool.RV64_ENABLED,false);
+        InstructionSet.rv64 = false;
+        Globals.instructionSet.populate();
+
+        HashSet<String> set = new HashSet<>();
+        for (Instruction i : Globals.instructionSet.getInstructionList()){
+            set.add(i.getExampleFormat());
+        }
+
+        Globals.getSettings().setBooleanSettingNonPersistent(Settings.Bool.RV64_ENABLED,true);
+        InstructionSet.rv64 = true;
+        Globals.instructionSet.populate();
+
+        ArrayList<Instruction> instructionList64 = Globals.instructionSet.getInstructionList();
+        instructionList64.sort(Comparator.comparing(Instruction::getExampleFormat));
+        StringBuilder output = new StringBuilder("| Example Usage | Description |\n|---------------|-------------|");
+        for (Instruction instr : instructionList64) {
+            if (instructionClass.isInstance(instr) && !set.contains(instr.getExampleFormat())) {
+                output.append("\n|");
+                output.append(instr.getExampleFormat());
+                output.append('|');
+                output.append(instr.getDescription());
+                output.append('|');
+            }
+        }
+        return output.toString();
+    }
 }