Added a debug menue

fix call not jumping

Makefile

@@ -3,6 +3,9 @@
 # Compiler
 CC = gcc
 
+# program to Run
+F = prog.bin
+
 # Compiler flags
 CFLAGS = -g -Wall -std=c99 -pedantic
 
@@ -19,8 +22,11 @@ all:
 clean:
 	rm -f $(OBJ) $(TARGET)
 
+debug: all
+	./$(TARGET) --debug $(F) 
+
 run: all
-	./$(TARGET)
+	./$(TARGET) $(F)
 
 nja:	./nja/nja$(V)
 	./nja/nja$(V) $(IN) $(OUT)

SDA.c

@@ -4,24 +4,23 @@
 #ifndef SDA
 #define SDA
 #include <stdio.h>
-
+#include "stackslot.c"
 struct sda {
-    unsigned int *sda;
+    int *size;
-    int size;
+    ObjRef *sda;
 };
 
-int getSDA(unsigned int offset, struct sda *sda) {
+ObjRef getSDA(int i, struct sda s) {
-    return sda->sda[offset];
+    return s.sda[i];
 }
 
-void setSDA(unsigned int offset, int value, struct sda *sda) {
+void setSDA(int point, ObjRef val, struct sda s) {
-    sda->sda[offset] = value;
+    s.sda[point] = val;
 }
 
-void printSDA(struct sda *sda) {
+void printSDA(struct sda s) {
-    printf("SDA:\n");
+    for (int i = 0; i < *s.size; i++) {
-    for (int i = 0; i < sda->size; ++i) {
+        printf("%i\n", *(int *)getSDA(i, s)->data);
-        printf("[%d] = %d\n", i, sda->sda[i]);
     }
 }
 

codeReader.c

@@ -6,13 +6,13 @@
 #include <stdlib.h>
 #include "program.c"
 
-unsigned int fromFile(char *path, struct program *program) {
+unsigned int fromFile(char *path, struct program program) {
     unsigned int countInstructions;
     unsigned int staticVars;
     FILE *fptr;
     fptr = fopen(path, "r");
     if (fptr == NULL) {
-        printf("Error: cannot open code file %s\n", path);
+        printf("Error: cannot open code file %s", path);
         exit(EXIT_FAILURE);
     }
     unsigned int buffer[4];

consts.c

@@ -1,5 +1,7 @@
 #ifndef CONSTS
 #define CONSTS
-#define VERSION 4
+#define VERSION 5
 
-#endif 
+#endif /* ifndef CONSTS
+#define CONSTS
+#define VERSION 2; */

debugMenu.c

@@ -0,0 +1,40 @@
+#ifndef DEBUGMENU
+#define DEBUGMENU
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "stack.c"
+#include "stack.c"
+
+void inspect(struct stack s, int fp){
+  char input[20];
+  printf("DEBUG [inspect]: stack, datam object?");
+  fgets(input,20,stdin);
+  if (input[0] == 's') printStack(s, fp);
+  if (input[0] == 'd'){/* todo */ }
+  if (input[0] == 'o'){/* todo */}
+}
+void list(){
+  //todo
+}
+void breakpoint(){
+  //todo
+}
+
+void debugMenu(int fp, struct stack stack, int* debug){
+  char input[20];
+  while (true) {
+    printf("DEBUG: inspect, list, breakpoint, run, step, quit?");
+    fgets(input, 20, stdin);
+    printf("%s",input);
+    if(input[0] == 'i') {inspect(stack,fp);}
+    if(input[0] == 'l') list();
+    if(input[0] == 'b') breakpoint();
+    if(input[0] == 's') break;
+    if(input[0] == 'r') {*debug = 0; break;};
+    if(input[0] == 'q') exit(0);
+    strcpy(input, "");
+  }
+}
+
+#endif /* ifndef DEBUGMENU */

instruktion.c

@@ -34,5 +34,8 @@
 #define CALL 26
 #define RET 27
 #define DROP 28
+#define PUSHR 29
+#define POPR 30
+#define DUP 31
 
 #endif /* ifndef INSREUKTION */

njvm.c

@@ -1,303 +1,251 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
-#include "consts.c"
 #include "instruktion.c"
 #include "code.c"
 #include "stack.c"
 #include "program.c"
 #include "codeReader.c"
 #include "SDA.c"
+#include "reg.c"
+#include "debugMenu.c"
 
-// Program
+// Debug
-struct program *program;
-
-// SDA
-int fp;
 int debug = 0;
 
+// Stack
+struct stack stack;
+#define SIZE 1000
+
+//Register
+struct reg reg;
+
+// Program
+struct program program;
+
+// SDA
+struct sda sda;
+unsigned fp;
+
 void version(void) {
-    printf("Ninja Virtual Machine version %i (compiled %s, %s)\n", VERSION, __DATE__, __TIME__);
+    printf("Ninja Virtual Machine version %i (compiled %s, %s)\n", 0, __DATE__, __TIME__);
 }
 
 void help(void) {
     printf("Usage: ./njvm [options] <code file>\n\t--debug\tstart virtual machine in debug mode\n\t--version\tshow version and exit\n\t--help\t\tshow this help and exit\n");
 }
 
-void execute(struct program *program, struct sda *sda) {
+void execute(struct program program) {
-    struct stack stack;
+    int i;
-    stack.size = 1000;
-    stack.currentFrame = 0;
-    struct stack callStack;
-    callStack.size = 1000;
-    callStack.currentFrame = 0;
-
-    for (int i = 0; i < stack.size; ++i) {
-        struct stackFrame *frame = malloc(sizeof(struct stackFrame));
-        frame->fp = malloc(sizeof(int) * stack.size);
-        frame->sp = malloc(sizeof(int) * stack.size);
-        frame->bp = NULL;
-        stack.frames[i] = frame;
-    }
-
-    for (int i = 0; i < callStack.size; ++i) {
-        struct stackFrame *frame = malloc(sizeof(struct stackFrame));
-        frame->fp = malloc(sizeof(int) * stack.size);
-        frame->sp = malloc(sizeof(int) * stack.size);
-        frame->bp = NULL;
-        callStack.frames[i] = frame;
-    }
-
-    struct stackFrame *currentFrame = NULL;
-    //struct stackFrame *currentCallFrame = NULL;
-    unsigned int tmp;
     int intInput;
+    unsigned int temp;
     char charInput;
-
+    StackSlot tempSlot;
-    for (int i = 0; i < program->size; ++i) {
+    for (i = 0; i < *program.size; ++i) {
-        unsigned int instruction = program->program[i];
+        if (debug == 1) debugMenu(fp,stack,&debug);       
-        if (i >= program->size) {
+        switch (program.program[i] >> 24) {
-            printf("Error: Jump out of program memory\n");
-            goto end;
-        }
-
-        switch (instruction >> 24) {
             case HALT:
+                if (debug == 1) printf("halt\n");
                 goto end;
             case PUSHC:
-                if (debug == 1) printf("PUSHC %d\n", SIGN_EXTEND(IMMEDIATE(instruction)));
+                if (debug == 1) printf("pushc: %i\n", IMMEDIATE(program.program[i]));
-                push(&stack, SIGN_EXTEND(IMMEDIATE(instruction)));
+                push(stack, stackSlotWithObjRef(getIntObj(SIGN_EXTEND(IMMEDIATE(program.program[i])))));
                 break;
             case ADD:
-                if (debug == 1) printf("ADD\n");
+                if (debug == 1) printf("add: %i + %i\n",peek(stack, 2),peek(stack, 1)); 
-                push(&stack, pop(&stack) + pop(&stack));
+                push(stack, stackSlotWithObjRef(getIntObj(getIntValfromStackSlot(pop(stack)) + getIntValfromStackSlot(pop(stack)))));
                 break;
             case SUB:
-                tmp = pop(&stack);
+                if (debug == 1) printf("sub: %i - %i\n", peek(stack, 2), peek(stack, 1));
-                if (debug == 1) printf("SUB\n");
+                temp = getIntValfromStackSlot(pop(stack));
-                if (debug == 1) printf("tmp: %d\n", tmp);
+                push(stack, stackSlotWithObjRef(getIntObj(getIntValfromStackSlot(pop(stack)) - temp)));
-                push(&stack, pop(&stack) - tmp);
                 break;
             case MUL:
-                if (debug == 1) printf("MUL\n");
+                if (debug == 1) printf("mul: %i * %i\n", peek(stack, 2), peek(stack, 1));
-                push(&stack, pop(&stack) * pop(&stack));
+                push(stack, stackSlotWithObjRef(getIntObj(getIntValfromStackSlot(pop(stack)) * getIntValfromStackSlot(pop(stack)))));
                 break;
             case DIV:
-                tmp = pop(&stack);
+                if (debug == 1) printf("div: %i / %i\n", peek(stack, 2), peek(stack, 1));
-                if (debug == 1) printf("DIV\n");
+                temp = getIntValfromStackSlot(pop(stack));
-                if (debug == 1) printf("tmp: %d\n", tmp);
+                push(stack, stackSlotWithObjRef(getIntObj(getIntValfromStackSlot(pop(stack)) / temp)));
-                push(&stack, pop(&stack) / tmp);
                 break;
             case MOD:
-                tmp = pop(&stack);
+                if (debug == 1) printf("mod: %i %% %i\n", peek(stack, 2), peek(stack, 1));
-                if (debug == 1) printf("MOD\n");
+                temp = getIntValfromStackSlot(pop(stack));
-                if (debug == 1) printf("tmp: %d\n", tmp);
+                push(stack, stackSlotWithObjRef(getIntObj(getIntValfromStackSlot(pop(stack)))));
-                push(&stack, pop(&stack) % tmp);
                 break;
             case RDINT:
+                if (debug == 1) printf("rdint\n");
                 scanf("%i", &intInput);
-                if (debug == 1) printf("RDINT %d\n", intInput);
+                push(stack, stackSlotWithObjRef(getIntObj(intInput)));
-                push(&stack, intInput);
+                if (debug == 1) printf("pushed %i\n", intInput);
                 break;
             case WRINT:
-                if (debug == 1) printf("WRINT\n");
+                if (debug == 1) printf("wrint: %i\n", peek(stack, 1));
-                printf("%i", pop(&stack));
+                printf("%i", getIntValfromStackSlot(pop(stack)));
                 break;
             case RDCHR:
+                if (debug == 1) printf("rdchr\n");
                 scanf("%c", &charInput);
-                if (debug == 1) printf("RDCHR %c\n", charInput);
+                push(stack, stackSlotWithObjRef(getIntObj(charInput)));
-                push(&stack, charInput);
+                if (debug == 1) printf("pushed %c\n", charInput);
                 break;
             case WRCHR:
-                if (debug == 1) printf("WRCHR\n");
+                if (debug == 1) printf("wrchr: %c\n", peek(stack, 1));
-                printf("%c", pop(&stack));
+                printf("%c", getIntValfromStackSlot(pop(stack)));
                 break;
             case PUSHG:
-                if (debug == 1) printf("PUSHG %d\n", SIGN_EXTEND(IMMEDIATE(instruction)));
+                if (debug == 1) printf("pushg: %i\n", SIGN_EXTEND(IMMEDIATE(program.program[i])));
-                currentFrame = stack.frames[stack.currentFrame];
+                push(stack, stackSlotWithObjRef(getSDA(SIGN_EXTEND(IMMEDIATE(program.program[i])), sda)));
-                currentFrame->bp = currentFrame->sp;
-
-                *currentFrame->sp++ = getSDA(SIGN_EXTEND(IMMEDIATE(instruction)), sda);
                 break;
             case POPG:
-                if (debug == 1) printf("POPG %d\n", SIGN_EXTEND(IMMEDIATE(instruction)));
+                if (debug == 1) printf("popg: %i\n", SIGN_EXTEND(IMMEDIATE(program.program[i])));
-                currentFrame = stack.frames[stack.currentFrame];
+                setSDA(SIGN_EXTEND(IMMEDIATE(program.program[i])), pop(stack).u.objRef, sda);
-                currentFrame->bp = currentFrame->sp;
-
-                setSDA(SIGN_EXTEND(IMMEDIATE(instruction)), pop(&stack), sda);
                 break;
             case ASF:
-                if (debug == 1) printf("ASF %d\n", SIGN_EXTEND(IMMEDIATE(instruction)));
+                if (debug == 1) printf("asf: %i\n", SIGN_EXTEND(IMMEDIATE(program.program[i])));
-                currentFrame = stack.frames[stack.currentFrame];
+                push(stack, stackSlotWitchNumber(fp));
-                push(&stack, *currentFrame->sp);
+                fp = *stack.current;
-                *currentFrame->sp = stack.currentFrame;
+                *stack.current = *stack.current + SIGN_EXTEND(IMMEDIATE(program.program[i]));
-                currentFrame->bp = currentFrame->sp;
-
-                stack.currentFrame += SIGN_EXTEND(IMMEDIATE(instruction));
                 break;
             case RSF:
-                if (debug == 1) printf("RSF\n");
+                if (debug == 1) printf("rsf: %i\n", SIGN_EXTEND(IMMEDIATE(program.program[i])));
-                stack.currentFrame = pop(&stack);
+                *stack.current = fp;
-                currentFrame = stack.frames[stack.currentFrame];
+                if (debug == 1) printf("pop: %i\n", peek(stack, 1));
-                currentFrame->bp = NULL;
+                tempSlot = pop(stack) ;
-                break;
+                fp = getIntValfromStackSlot(tempSlot);
-            case PUSHL:
-                printf("PUSHL %d\n", SIGN_EXTEND(IMMEDIATE(instruction)));
-                currentFrame = stack.frames[stack.currentFrame];
-                currentFrame->bp = currentFrame->sp;
-                int x = SIGN_EXTEND(IMMEDIATE(instruction));
-                push(&stack, currentFrame->fp[x]);
                 break;
             case POPL:
-                if (debug == 1) printf("POPL %d\n", SIGN_EXTEND(IMMEDIATE(instruction)));
+                if (debug == 1) printf("popl: %i\n", SIGN_EXTEND(IMMEDIATE(program.program[i])));
-                currentFrame = stack.frames[stack.currentFrame];
+                stack.stack[fp + SIGN_EXTEND(IMMEDIATE(program.program[i]))] = pop(stack);
-                currentFrame->fp[SIGN_EXTEND(IMMEDIATE(instruction))] = pop(&stack);
                 break;
-            case EQ:
+            case PUSHL:
-                if (debug == 1) printf("EQ\n");
+                if (debug == 1) printf("pushl: %i\n", SIGN_EXTEND(IMMEDIATE(program.program[i])));
-                if (pop(&stack) == pop(&stack)) {
+                push(stack, stack.stack[fp + SIGN_EXTEND(IMMEDIATE(program.program[i]))]);
-                    push(&stack, 1);
-                } else {
-                    push(&stack, 0);
-                }
                 break;
             case NE:
-                if (debug == 1) printf("NE\n");
+                if (debug == 1) printf("ne: %i != %i\n", peek(stack, 2), peek(stack, 1));
-                if (pop(&stack) != pop(&stack)) {
+                if (getIntValfromStackSlot(pop(stack)) != getIntValfromStackSlot(pop(stack))) push(stack, stackSlotWitchNumber(1));
-                    push(&stack, 1);
+                else push(stack, stackSlotWitchNumber(0));
-                } else {
+                break;
-                    push(&stack, 0);
+            case EQ:
-                }
+                if (debug == 1) printf("eq: %i == %i\n", peek(stack, 2), peek(stack, 1));
+                if (getIntValfromStackSlot(pop(stack)) == getIntValfromStackSlot(pop(stack))) push(stack, stackSlotWitchNumber(1));
+                else push(stack, stackSlotWitchNumber(0));
                 break;
             case LT:
-                if (debug == 1) printf("LT\n");
+                if (debug == 1) printf("lt: %i < %i\n", peek(stack, 2), peek(stack, 1));
-                tmp = pop(&stack);
+                temp = getIntValfromStackSlot(pop(stack));
-                if (pop(&stack) < tmp) {
+                if (getIntValfromStackSlot(pop(stack)) < temp) push(stack, stackSlotWitchNumber(1));
-                    push(&stack, 1);
+                else push(stack, stackSlotWitchNumber(0));
-                } else {
-                    push(&stack, 0);
-                }
                 break;
             case LE:
-                if (debug == 1) printf("LE\n");
+                if (debug == 1) printf("le: %i <= %i\n", peek(stack, 2), peek(stack, 1));
-                tmp = pop(&stack);
+                temp = getIntValfromStackSlot(pop(stack));
-                if (pop(&stack) <= tmp) {
+                if (getIntValfromStackSlot(pop(stack)) <= temp) push(stack, stackSlotWitchNumber(1));
-                    push(&stack, 1);
+                else push(stack, stackSlotWitchNumber(0));
-                } else {
-                    push(&stack, 0);
-                }
                 break;
             case GT:
-                if (debug == 1) printf("GT\n");
+                if (debug == 1) printf("gt: %i > %i\n", peek(stack, 2), peek(stack, 1));
-                if (debug == 1) printf("peek(1): %d\n", peek(&stack, 1));
+                temp = getIntValfromStackSlot(pop(stack));
-                if (debug == 1) printf("peek(2): %d\n", peek(&stack, 2));
+                if (getIntValfromStackSlot(pop(stack)) > temp) push(stack, stackSlotWitchNumber(1));
-                if (debug == 1) printf("peek(1) > peek(2): %d\n", peek(&stack, 2) > peek(&stack, 1));
+                else push(stack, stackSlotWitchNumber(0));
-                tmp = pop(&stack);
-                if (pop(&stack) > tmp) {
-                    push(&stack, 1);
-                } else {
-                    push(&stack, 0);
-                }
                 break;
             case GE:
-                if (debug == 1) printf("GE\n");
+                if (debug == 1) printf("ge: %i >= %i\n", peek(stack, 2), peek(stack, 1));
-                tmp = pop(&stack);
+                temp = getIntValfromStackSlot(pop(stack));
-                if (pop(&stack) >= tmp) {
+                if (getIntValfromStackSlot(pop(stack)) >= temp) push(stack, stackSlotWitchNumber(1));
-                    push(&stack, 1);
+                else push(stack, stackSlotWitchNumber(0));
-                } else {
-                    push(&stack, 0);
-                }
                 break;
-            case JMP:
+            case BRF:
-                if (debug == 1) printf("JMP %d\n", SIGN_EXTEND(IMMEDIATE(instruction)));
+                if (debug == 1) printf("brf: %i\n", SIGN_EXTEND(IMMEDIATE(program.program[i])));
-                int j = SIGN_EXTEND(IMMEDIATE(program->program[i]));
+                if (debug == 1) printf("pop: %i\n", peek(stack, 1));
-                if (debug == 1) printf("JMP %d\n", j);
+                if (getIntValfromStackSlot(pop(stack)) == 0) {
-                if (j-- >= program->size) {
+                    i = SIGN_EXTEND(IMMEDIATE(program.program[i])) - 1;
-                    printf("Error: Jump out of program memory\n");
+                    if (debug == 1) printf("new i: %i\n", i);
-                    goto end;
-                }
-                i = j;
-                break;
-            case BRF: // branch on false
-                if (debug == 1) printf("BRF %d\nStack: %d\n", SIGN_EXTEND(IMMEDIATE(instruction)), pop(&stack));
-                if (pop(&stack) == 0) {
-                    int j = SIGN_EXTEND(IMMEDIATE(program->program[i]));
-                    if (j-- >= program->size) {
-                        printf("Error: BRF out of program memory\n");
-                        goto end;
-                    }
-                    i = j;
                 }
                 break;
             case BRT:
-                if (debug == 1) printf("BRT %d\n", SIGN_EXTEND(IMMEDIATE(instruction)));
+                if (debug == 1) printf("brt: %i\n", SIGN_EXTEND(IMMEDIATE(program.program[i])));
-                if (pop(&stack) == 1) {
+                if (debug == 1) printf("pop: %i\n", peek(stack, 1));
-                    int j = SIGN_EXTEND(IMMEDIATE(program->program[i]));
+                if (getIntValfromStackSlot(pop(stack)) == 1) {
-                    if (j-- >= program->size) {
+                    i = SIGN_EXTEND(IMMEDIATE(program.program[i])) - 1;
-                        printf("Error: BRT out of program memory\n");
+                    if (debug == 1) printf("new i: %i\n", i);
-                        goto end;
-                    }
-                    i = j;
                 }
                 break;
+            case JMP:
+                if (debug == 1) printf("jmp: %i\n", SIGN_EXTEND(IMMEDIATE(program.program[i])));
+                i = SIGN_EXTEND(IMMEDIATE(program.program[i])) - 1;
+                if (debug == 1) printf("new i: %i\n", i);
+                break;
             case CALL:
-                tmp = SIGN_EXTEND(IMMEDIATE(program->program[i]));
+                if (debug == 1) printf("call: %i\n", SIGN_EXTEND(IMMEDIATE(program.program[i])));
-                if (j-- >= program->size) {
+                push(stack, stackSlotWitchNumber(i));
-                    printf("Error: Call out of program memory\n");
+                if (debug == 1) printf("push: %i\n", i + 1);
-                    goto end;
+                i = SIGN_EXTEND(IMMEDIATE(program.program[i])) - 1;
-                }
+                if (debug == 1) printf("new i: %i\n", i);
-                push(&callStack, i + 1);
-                i = tmp;
                 break;
             case RET:
-                if (debug == 1) printf("RET\n");
+                if (debug == 1) printf("ret\n");
-                tmp = pop(&callStack);
+                if (debug == 1) printf("pop: %i\n", peek(stack, 1));
-                if (tmp-- >= program->size) {
+                i = getIntValfromStackSlot(pop(stack));
-                    printf("Error: Return out of program memory\n");
+                if (debug == 1) printf("new i: %i\n", i);
-                    goto end;
-                }
-                i = tmp;
                 break;
             case DROP:
-                tmp = SIGN_EXTEND(IMMEDIATE(instruction));
+                if(debug ==1) printf("drop\n");
-                if (debug == 1) printf("DROP %d\n", tmp);
+                *stack.current = *stack.current - SIGN_EXTEND(IMMEDIATE(program.program[i]));
-                for (int b = 0; b < tmp; ++b) {
+                break;
-                    pop(&stack);
+            case DUP:
-                }
+                if (debug==1) printf("dup\n");
+                temp = getIntValfromStackSlot(pop(stack));
+                push(stack, stackSlotWitchNumber(temp));
+                push(stack, stackSlotWitchNumber(temp));
+                break;
+            case POPR:
+                if (debug==1) printf("popr")  ;
+                pushR(reg, getIntValfromStackSlot(pop(stack)));
+                if(debug == 1) printStackR(reg);
+                break;
+            case PUSHR:
+                if(debug == 1) printf("pushr");
+                push(stack, stackSlotWitchNumber(popR(reg)));
+                if(debug == 1) printStackR(reg);
                 break;
         }
     }
-
     end:
     return;
 }
 
-// run prog2.bin
 void tests(void) {
-    printf("Test started\n");
+
-    /*struct sda *sda = malloc(sizeof(struct sda));
-    unsigned int s[1000];
-    sda->size = 1000;
-    sda->sda = s;
-    fromFile("prog2.bin", program);
-    execute(program, (struct sda *) &sda);*/
-    printf("Test finished\n");
 }
 
 int main(int argc, char *argv[]) {
     // Initialize the Stack
-    struct stack stack;
     int size = SIZE;
-    stack.size = size;
+    int current = 0;
-    stack.currentFrame = 0;
+    StackSlot s[SIZE];
+    stack.size = &size;
+    stack.current = &current;
+    stack.stack = s;
+    
+    // Initialize the registery
+    int rSize = SIZE;
+    int rCurrent = 0;
+    unsigned int r[SIZE];
+    reg.size = &rSize;
+    reg.current = &rCurrent;
+    reg.stack = r;
 
     // Initialize ProgrammSpeicher
-    int psize = SIZE;
+    int psize = 1000;
+    int saveProgram = 0;
     unsigned int p[1000];
-    program = malloc(sizeof(struct program));
+    program.size = &psize;
-    program->size = psize;
+    program.program = p;
-    program->program = p;
+    program.saveProgram = &saveProgram;
 
-    // Initialize runtime variables
     int run = 0;
     int sizeSDA;
 
@@ -311,6 +259,12 @@ int main(int argc, char *argv[]) {
             } else if (strcmp(argv[i], "--help") == 0) {
                 help();
                 return 0;
+            } else if (strcmp(argv[i], "--stack") == 0) {
+                i++;
+                // TODO: implement stack size
+            } else if(strcmp(argv[i], "--heap") == 0) {
+                i++;
+                // TODO: implement heap size
             } else {
                 sizeSDA = fromFile(argv[i], program);
                 run = 1;
@@ -318,28 +272,20 @@ int main(int argc, char *argv[]) {
         }
     }
 
-    /*
-     * Debug mode
-     */
     if (debug) {
         tests();
     }
 
-    /*
-     * Run program
-     */
     if (run) {
         printf("Ninja Virtual Machine started\n");
-        struct sda *sda = malloc(sizeof(struct sda));
+        ObjRef s[sizeSDA];
-        unsigned int s[sizeSDA];
+        sda.size = &sizeSDA;
-        sda->size = sizeSDA;
+        sda.sda = s;
-        sda->sda = s;
         if (debug == 1) printProgram(program);
-        execute(program, (struct sda *) &sda);
+        execute(program);
         printf("Ninja Virtual Machine stopped\n");
     } else {
         printf("Error: no code file specified\n");
         return 1;
     }
-    return 0;
 }

program.c

@@ -9,21 +9,23 @@
 #include <stdio.h>
 
 struct program {
+    int *size;
     unsigned int *program;
-    int size;
+    int *saveProgram;
 };
 
-void copyToProgram(const unsigned int codeToCopy[], int size, struct program *program) {
+void copyToProgram(const unsigned int codeToCopy[], int size, struct program program) {
     for (int i = 0; i < size; ++i) {
-        program->program[i] = codeToCopy[i];
+        program.program[i] = codeToCopy[i];
     }
-    program->size = size;
+    *program.size = size;
+    *program.saveProgram = 1;
 }
 
-void printProgram(struct program *program) {
+void printProgram(struct program program) {
     char c[10];
-    for (int i = 0; i < program->size; i++) {
+    for (int i = 0; i < *program.size; i++) {
-        switch (program->program[i] >> 24) {
+        switch (program.program[i] >> 24) {
             case PUSHC:
                 strcpy(c, "pushc");
                 break;
@@ -76,43 +78,55 @@ void printProgram(struct program *program) {
                 strcpy(c, "popl");
                 break;
             case EQ:
-                strcpy(c,"eq");
+                strcpy(c, "eq");
                 break;
             case NE:
-                strcpy(c,"ne");
+                strcpy(c, "ne");
                 break;
             case LT:
-                strcpy(c,"lt");
+                strcpy(c, "lt");
+                break;
+            case LE:
+                strcpy(c, "le");
                 break;
             case GT:
-                strcpy(c,"gt");
+                strcpy(c, "gt");
                 break;
             case GE:
-                strcpy(c,"ge");
+                strcpy(c, "ge");
                 break;
             case JMP:
-                strcpy(c,"jmp");
+                strcpy(c, "jmp");
                 break;
             case BRF:
                 strcpy(c, "brf");
                 break;
             case BRT:
-                strcpy(c,"brt");
+                strcpy(c, "brt");
                 break;
             case CALL:
-                strcpy(c,"call");
+                strcpy(c, "call");
                 break;
             case RET:
-                strcpy(c,"ret");
+                strcpy(c, "ret");
                 break;
             case DROP:
-                strcpy(c,"drop");
+                strcpy(c, "drop");
+                break;
+            case PUSHR:
+                strcpy(c, "pushr");
+                break;
+            case POPR:
+                strcpy(c, "popr");
+                break;
+            case DUP:
+                strcpy(c, "dup");
                 break;
             default:
                 strcpy(c, "ERROR");
                 break;
         }
-        IMMEDIATE(program->program[i]) ? printf("%03i:\t%s\t%i\n", i, c, SIGN_EXTEND(IMMEDIATE(program->program[i]))) : printf(
+        IMMEDIATE(program.program[i]) ? printf("%03i:\t%s\t%i\n", i, c, SIGN_EXTEND(IMMEDIATE(program.program[i]))) : printf(
                 "%03i:\t%s\n", i, c);
     }
 }

programs/prog-test-1.asm

@@ -1,11 +0,0 @@
-pushc	3
-pushc	4
-add
-pushc	10
-pushc	6
-sub
-mul
-wrint
-pushc	10
-wrchr
-halt

programs/prog-test-2.asm

@@ -1,9 +0,0 @@
-	pushc	-2
-	rdint
-	mul
-	pushc	3
-	add
-	wrint
-	pushc	'\n'
-	wrchr
-	halt

programs/prog-test-3.asm

@@ -1,5 +0,0 @@
-	rdchr
-	wrint
-	pushc	'\n'
-	wrchr
-	halt

programs/prog02.asm

@@ -0,0 +1,28 @@
+//
+// prog02.asm -- call/ret with args, but without ret value
+//
+
+	asf	3
+	pushc	11
+	pushc	33
+	call	proc
+	drop	2
+	rsf
+	halt
+
+proc:
+	asf	2
+	pushl	-4
+	wrint
+	pushc	'\n'
+	wrchr
+	pushc	22
+	wrint
+	pushc	'\n'
+	wrchr
+	pushl	-3
+	wrint
+	pushc	'\n'
+	wrchr
+	rsf
+	ret

programs/prog04.asm

@@ -0,0 +1,32 @@
+//
+// prog04.asm -- call/ret with args, and with ret value
+//
+
+	asf	3
+	pushc	11
+	wrint
+	pushc	'\n'
+	wrchr
+	pushc	11
+	pushc	33
+	call	proc
+	drop	2
+	pushr
+	wrint
+	pushc	'\n'
+	wrchr
+	pushc	33
+	wrint
+	pushc	'\n'
+	wrchr
+	rsf
+	halt
+
+proc:
+	asf	2
+	pushl	-3
+	pushl	-4
+	sub
+	popr
+	rsf
+	ret

programs/prog1.asm?inline=false

@@ -0,0 +1,31 @@
+//
+// prog1.asm -- an assembler example with global variables
+//
+
+// global Integer x;
+// global Integer y;
+// x = 2;
+// y = x + 3;
+// x = 7 * y + x;
+// writeInteger(x + -33);
+// writeCharacter('\n');
+
+	pushc	2
+	popg	0
+	pushg	0
+	pushc	3
+	add
+	popg	1
+	pushc	7
+	pushg	1
+	mul
+	pushg	0
+	add
+	popg	0
+	pushg	0
+	pushc	-33
+	add
+	wrint
+	pushc	'\n'
+	wrchr
+	halt

programs/prog3.asm

@@ -1,61 +1,9 @@
-//
+	pushc 1
-// prog1.asm -- an assembler example with global variables
+  asf	2
-//
+  asf 4
-
+  pushc 23
-//
+  asf 3
-// compute the gcd of two positive numbers
+  rsf
-//
+  rsf
-// global Integer x;
+  rsf
-// global Integer y;
-// x = readInteger();
-// y = readInteger();
-// while (x != y) {
-//   if (x > y) {
-//     x = x - y;
-//   } else {
-//     y = y - x;
-//   }
-// }
-// writeInteger(x);
-// writeCharacter('\n');
-
-	// x = readInteger();
-	rdint
-	popg	0
-	// y = readInteger();
-	rdint
-	popg	1
-	// while ...
-L1:
-	// x != y
-	pushg	0 // 4
-	pushg	1
-	ne
-	brf	L2
-	// if ...
-	pushg	0
-	pushg	1
-	gt
-	brf	L3
-	// x = x - y
-	pushg	0
-	pushg	1
-	sub
-	popg	0
-	jmp	L4
-L3:
-	// y = y - x
-	pushg	1 // 17
-	pushg	0
-	sub
-	popg	1
-L4:
-	jmp	L1 // 21
-L2:
-	// writeInteger(x);
-	pushg	0 // 22
-	wrint
-	// writeCharacter('\n');
-	pushc	'\n'
-	wrchr
 	halt

programs/prog4.asm

@@ -1,12 +1,12 @@
 //
-// prog2.asm -- an assembler example with local variables
+// prog1.asm -- an assembler example with global variables
 //
 
 //
 // compute the gcd of two positive numbers
 //
-// local Integer x;
+// global Integer x;
-// local Integer y;
+// global Integer y;
 // x = readInteger();
 // y = readInteger();
 // while (x != y) {
@@ -19,45 +19,43 @@
 // writeInteger(x);
 // writeCharacter('\n');
 
-	asf	2
 	// x = readInteger();
 	rdint
-	popl	0
+	popg	0
 	// y = readInteger();
 	rdint
-	popl	1
+	popg	1
 	// while ...
 L1:
 	// x != y
-	pushl	0
+	pushg	0
-	pushl	1
+	pushg	1
 	ne
 	brf	L2
 	// if ...
-	pushl	0
+	pushg	0
-	pushl	1
+	pushg	1
 	gt
 	brf	L3
 	// x = x - y
-	pushl	0
+	pushg	0
-	pushl	1
+	pushg	1
 	sub
-	popl	0
+	popg	0
 	jmp	L4
 L3:
 	// y = y - x
-	pushl	1
+	pushg	1
-	pushl	0
+	pushg	0
 	sub
-	popl	1
+	popg	1
 L4:
 	jmp	L1
 L2:
 	// writeInteger(x);
-	pushl	0
+	pushg	0
 	wrint
 	// writeCharacter('\n');
 	pushc	'\n'
 	wrchr
-	rsf
 	halt

programs/prog5.asm

@@ -1,35 +1,63 @@
 //
-// prog01.asm -- call/ret without args, and without ret value
+// prog2.asm -- an assembler example with local variables
 //
 
-	asf	3
+//
-	pushc	11
+// compute the gcd of two positive numbers
-	wrint
+//
-	pushc	'\n'
+// local Integer x;
-	wrchr
+// local Integer y;
-	call	proc
+// x = readInteger();
-	pushc	44
+// y = readInteger();
+// while (x != y) {
+//   if (x > y) {
+//     x = x - y;
+//   } else {
+//     y = y - x;
+//   }
+// }
+// writeInteger(x);
+// writeCharacter('\n');
+
+	asf	2
+	// x = readInteger();
+	rdint
+	popl	0
+	// y = readInteger();
+	rdint
+	popl	1
+	// while ...
+L1:
+	// x != y
+	pushl	0
+	pushl	1
+	ne
+	brf	L2
+	// if ...
+	pushl	0
+	pushl	1
+	gt
+	brf	L3
+	// x = x - y
+	pushl	0
+	pushl	1
+	sub
+	popl	0
+	jmp	L4
+L3:
+	// y = y - x
+	pushl	1
+	pushl	0
+	sub
+	popl	1
+L4:
+	jmp	L1
+L2:
+	// writeInteger(x);
+	pushl	0
 	wrint
+	// writeCharacter('\n');
 	pushc	'\n'
 	wrchr
 	rsf
 	halt
-
-proc:
-	asf	2
-	pushc	22
-	wrint
-	pushc	'\n'
-	wrchr
-	call	proctwo
-	rsf
-	ret
-
-proctwo:
-	asf	2
-	pushc	33
-	wrint
-	pushc	'\n'
-	wrchr
-	rsf
-	ret

programs/prog6.asm

@@ -1,28 +1,61 @@
 //
-// prog02.asm -- call/ret with args, but without ret value
+// prog1.asm -- an assembler example with global variables
 //
 
-	asf	3
+//
-	pushc	11
+// compute the gcd of two positive numbers
-	pushc	33
+//
-	call	proc
+// global Integer x;
-	drop	2
+// global Integer y;
-	rsf
+// x = readInteger();
+// y = readInteger();
+// while (x != y) {
+//   if (x > y) {
+//     x = x - y;
+//   } else {
+//     y = y - x;
+//   }
+// }
+// writeInteger(x);
+// writeCharacter('\n');
+
+	// x = readInteger();
+	rdint
+	popg	0
+	// y = readInteger();
+	rdint
+	popg	1
+	// while ...
+L1:
+	// x != y
+	pushg	0
+	pushg	1
+	ne
+	brf	L2
+	// if ...
+	pushg	0
+	pushg	1
+	gt
+	brf	L3
+	// x = x - y
+	pushg	0
+	pushg	1
+	sub
+	popg	0
+	jmp	L4
+L3:
+	// y = y - x
+	pushg	1
+	pushg	0
+	sub
+	popg	1
+L4:
+	jmp	L1
+L2:
+	// writeInteger(x);
+	pushg	0
+	wrint
+	// writeCharacter('\n');
+	pushc	'\n'
+	wrchr
 	halt
-
-proc:
-	asf	2
-	pushl	-4
-	wrint
-	pushc	'\n'
-	wrchr
-	pushc	22
-	wrint
-	pushc	'\n'
-	wrchr
-	pushl	-3
-	wrint
-	pushc	'\n'
-	wrchr
-	rsf
-	ret

programs/prog7.asm

@@ -1,27 +1,16 @@
 //
-// prog02.asm -- call/ret with args, but without ret value
+// prog04.asm -- call/ret with args, and with ret value
 //
 
-	asf	3
+	pushc 12
-	pushc	11
+  rdint
-	pushc	33
+  mul
+  wrint
   call proc
-	drop	2
-	rsf
   halt
 
 proc:
-	asf	2
+	asf 1
-	pushl	4
-	wrint
-	pushc	'\n'
-	wrchr
-	pushc	22
-	wrint
-	pushc	'\n'
-	wrchr
-	pushl	3
-	wrint
   pushc '\n'
   wrchr
   rsf

reg.c

@@ -0,0 +1,48 @@
+//
+// Created by Nils on 29.10.2023.
+//
+#ifndef REG
+#define REG
+
+#include <stdio.h>
+#include <stdlib.h>
+
+struct reg {
+    int* size;
+    int* current;
+    unsigned int *stack;
+};
+
+void printStackR(struct reg stack) {
+    printf("Regurn reg\nSize:\t\t%i\nCurrent:\t%i\n", *stack.size, *stack.current);
+    for (int i = *stack.current-1; i > 0; --i) {
+        printf("||%i||\n", stack.stack[i]);
+    }
+}
+
+void pushR(struct reg s, unsigned int value) {
+    if (*s.current >= *s.size) {
+        printf("Stack Overflow\n");
+        exit(EXIT_FAILURE);
+    }
+    s.stack[*s.current] = value;
+    *s.current=*s.current + 1;
+}
+
+unsigned int popR(struct reg s) {
+    if (*s.current == 0) {
+        printf("Stack Underflow\n");
+        exit(EXIT_FAILURE);
+    }
+    *s.current = *s.current -1;
+    return s.stack[*s.current];
+}
+
+unsigned int peekR(struct reg s, int steps) {
+    if (*s.current - steps < 0) {
+        printf("Stack Underflow\n");
+        exit(EXIT_FAILURE);
+    }
+    return s.stack[*s.current - steps];
+}
+#endif

stack.c

@@ -3,46 +3,57 @@
 //
 #ifndef STACK
 #define STACK
-#define SIZE 1000
-
 
 #include <stdio.h>
 #include <stdlib.h>
-
+#include "stackslot.c"
-struct stackFrame {
-    int *fp; // Frame pointer
-    int *sp; // Stack pointer
-    int *bp; // Base pointer
-};
 
 struct stack {
-    int size;
+    int* size;
-    int currentFrame;
+    int* current;
-    struct stackFrame *frames[SIZE];
+    StackSlot *stack;
 };
 
-void printStack(struct stack *stack) {
+void printStack(struct stack stack, int fp) {
-    printf("Stack:\n");
+    printf("Stack\nSize:\t\t%i\nCurrent:\t%i\n", *stack.size, *stack.current);
-    for (int i = 0; i < stack->size; ++i) {
+    for (int i = *stack.current -1; i >= 0; --i) {
-        printf("[%d] = %d\n", i, stack->frames[stack->currentFrame]->sp[i]);
+        printf("%i\t",i);
+        if(stack.stack[i].isObjRef){
+          printf("|%p|", stack.stack[i].u.objRef);
+          if(stack.stack[i].u.objRef->size == sizeof(int))
+            printf("(%i)",*(int *)stack.stack[i].u.objRef->data);
+        }else { 
+        printf("|%i|", getIntValfromStackSlot(stack.stack[i]));
+      }
+      if(fp == i) printf("<-\tFP\n");
+      else if(*stack.current == i) printf("<-\tSP\n");
+      else printf("\n");
     }
 }
 
-void push(struct stack *stack, unsigned int value) {
+void push(struct stack s, StackSlot value) {
-    struct stackFrame *currentFrame = stack->frames[stack->currentFrame];
+    if (*s.current >= *s.size) {
-    *(currentFrame->sp) = value;
+        printf("Stack Overflow\n");
-    currentFrame->sp++;
+        exit(EXIT_FAILURE);
+    }
+    s.stack[*s.current] = value;
+    *s.current=*s.current + 1;
 }
 
-int pop(struct stack *stack) {
+StackSlot pop(struct stack s) {
-    struct stackFrame *currentFrame = stack->frames[stack->currentFrame];
+    if (*s.current == 0) {
-    currentFrame->sp--;
+        printf("Stack Underflow\n");
-    return *(currentFrame->sp);
+        exit(EXIT_FAILURE);
+    }
+    *s.current = *s.current -1;
+    return s.stack[*s.current];
 }
 
-int peek(struct stack *stack, int steps) { // peek is pop without removing the value
+int peek(struct stack s, int steps) {
-    struct stackFrame *currentFrame = stack->frames[stack->currentFrame];
+    if (*s.current - steps < 0) {
-    return *(currentFrame->sp - steps);
+        printf("Stack Underflow\n");
+        exit(EXIT_FAILURE);
+    }
+    return getIntValfromStackSlot(s.stack[*s.current - steps]);
 }
-
 #endif

stackslot.c

@@ -0,0 +1,57 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifndef STACKSLOT
+#define STACKSLOT
+typedef int Object;
+typedef struct {
+  unsigned int size;
+  unsigned char data[1];
+} *ObjRef;
+
+typedef struct{
+  bool isObjRef;
+  union {
+    ObjRef objRef;
+    int number;
+  } u;
+} StackSlot;
+
+ObjRef getIntObj(int val){
+  ObjRef intObject;
+  unsigned int objSize = sizeof(unsigned int) + sizeof(int);
+  if ((intObject = malloc(objSize)) == NULL) {
+    perror("malloc");
+  }
+  *(int *)intObject->data=val;
+  intObject->size=sizeof(int);
+  return intObject;
+}
+int getValFromIntObj(ObjRef iref){
+  return *(int *)iref->data;
+}
+int getIntValfromStackSlot(StackSlot s){
+  if(s.isObjRef){
+    return *(int *)s.u.objRef->data;
+  }
+  return s.u.number;
+}
+void setValIntObj(ObjRef iref, int val){
+  iref->size=sizeof(int);
+  *(int *)iref->data=val;
+}
+StackSlot stackSlotWithObjRef(ObjRef val){
+  StackSlot *stackSlot;
+  stackSlot=malloc(sizeof(StackSlot));
+  stackSlot->isObjRef=true;
+  stackSlot->u.objRef=val;
+  return *stackSlot;
+}
+StackSlot stackSlotWitchNumber(int val){
+  StackSlot *stackSlot;
+  stackSlot= malloc(sizeof(StackSlot));
+  stackSlot->isObjRef=false;
+  stackSlot->u.number=val;
+  return *stackSlot;
+}
+#endif