Preliminary breakpoint registration

makefile

@@ -7,10 +7,10 @@ include_windows = jni-windows-include
 # Default goal
 .PHONY: default
 default:
-	@echo
+	@echo $(include_linux)
 	@echo "Planet Virtual Boy Emulator"
 	@echo "  https://www.planetvb.com/"
-	@echo "  August 14, 2020"
+	@echo "  October 13, 2020"
 	@echo
 	@echo "Intended build environment: Debian i386 or amd64"
 	@echo "  gcc-multilib"

src/desktop/Main.java

@@ -51,15 +51,30 @@ public class Main {
         // Begin application operations
         new App(useNative);
 
-/*
+
-        var brk = new Breakpoint();
+        var brk = new Breakpoint(null);
-        String exp = "([sp - 8] & 3) << 6 != 12.0 + r6 * ecr && [0x0500008C + r8] == 0";
+
-        System.out.println(exp);
+        String exp =
+            "([sp - 8] & 3) << 6 != 12.0 + r6 * ecr && [0x0500008C + r8] == 0";
+        System.out.println("\n" + exp);
         if (brk.setCondition(exp))
             System.out.println(brk.debug());
-        else System.out.println(brk.getErrorCode() + "\t" +
+        else System.out.println(
-            brk.getErrorPosition() + ":" + brk.getErrorText());
+            brk.getErrorCode    (Breakpoint.CONDITION) + "\t" +
-*/
+            brk.getErrorPosition(Breakpoint.CONDITION) + ":"  +
+            brk.getErrorText    (Breakpoint.CONDITION)
+        );
+
+        exp = "123, 456 - 987 , f0-fffffff2";
+        System.out.println("\n" + exp);
+        if (brk.setAddresses(exp))
+            System.out.println(brk.test());
+        else System.out.println(
+            brk.getErrorCode    (Breakpoint.ADDRESS) + "\t" +
+            brk.getErrorPosition(Breakpoint.ADDRESS) + ":"  +
+            brk.getErrorText    (Breakpoint.ADDRESS)
+        );
+
     }
 
 }

src/desktop/vue/Breakpoint.java

@@ -8,13 +8,15 @@ public class Breakpoint {
 
     // Instance fields
     private int[][]  addresses;   // Applicable address ranges
+    private String   addressText; // Un-processed address ranges
     private String   condition;   // Un-processed condition
-    private int      errCode;     // Condition error code
+    private int[]    errCode;     // Error codes
-    private int      errPosition; // Character of condition error
+    private int[]    errPosition; // Character position of errors
-    private String   errText;     // Offending condition text
+    private String[] errText;     // Offending error text
     private boolean  isEnabled;   // Breakpoint is active
     private String   name;        // Display name
     private Token[]  tokens;      // Evaluation tokens
+    private Vue      vue;         // Containing emulation context
 
 
 
@@ -23,6 +25,7 @@ public class Breakpoint {
     ///////////////////////////////////////////////////////////////////////////
 
     // Error codes
+    public static final int BADTYPE    = -1;
     public static final int NONE       =  0;
     public static final int BADLITERAL =  1;
     public static final int BADTOKEN   =  2;
@@ -32,6 +35,10 @@ public class Breakpoint {
     public static final int NESTING    =  6;
     public static final int UNEXPECTED =  7;
 
+    // Error types
+    public static final int ADDRESS   = 0;
+    public static final int CONDITION = 1;
+
     // Token types
     private static final int BINARY  = 4;
     private static final int CLOSE   = 6;
@@ -91,7 +98,7 @@ public class Breakpoint {
     private static final HashMap<String, Integer> SYMDEFS;
 
     // Functional symbol IDs
-    private static final int ADDRESS   =  0;
+    //private static final int ADDRESS =  0; // Same as error type
     private static final int CODE      =  1;
     private static final int COND      =  2;
     private static final int DISP      =  3;
@@ -298,14 +305,16 @@ public class Breakpoint {
     ///////////////////////////////////////////////////////////////////////////
 
     // Default constructor
-    public Breakpoint() {
+    public Breakpoint(Vue vue) {
         addresses   = new int[0][];
+        addressText = "";
         condition   = "";
-        errCode     = NONE;
+        errCode     = new int   [] { NONE, NONE };
-        errPosition = 0;
+        errPosition = new int   [] {    0,    0 };
-        errText     = "";
+        errText     = new String[] {   "",   "" };
         name        = "";
         tokens      = new Token[0];
+        this.vue    = vue;
     }
 
 
@@ -366,24 +375,48 @@ public class Breakpoint {
         return ret.toString();
     }
 
+    // Produce a string representation of the internal address ranges
+    public String test() {
+        var ret = new StringBuilder();
+        for (int x = 0; x < addresses.length; x++) {
+            var range = addresses[x];
+            if (x > 0)
+                ret.append("\n");
+            ret.append(String.format("%08X", range[0]));
+            if (range[0] != range[1])
+                ret.append(String.format("-%08X", range[1]));
+        }
+        return ret.toString();
+    }
+
+    // Evaluate the condition against its emulation context
+    public boolean evaluate() {
+        return vue == null ? false : vue.evaluate(this);
+    }
+
+    // Retrieve the most recent input addresses
+    public String getAddresses() {
+        return addressText;
+    }
+
     // Retrieve the most recent input condition
     public String getCondition() {
         return condition;
     }
 
     // Retrieve the most recent error code
-    public int getErrorCode() {
+    public int getErrorCode(int type) {
-        return errCode;
+        return type < 0 || type > 1 ? BADTYPE : errCode[type];
     }
 
     // Retrieve the most recent error character position
-    public int getErrorPosition() {
+    public int getErrorPosition(int type) {
-        return errPosition;
+        return type < 0 || type > 1 ? BADTYPE : errPosition[type];
     }
 
     // Retrieve the most recent error text
-    public String getErrorText() {
+    public String getErrorText(int type) {
-        return errText;
+        return type < 0 || type > 1 ? null : errText[type];
     }
 
     // Retrieve the display name
@@ -397,24 +430,137 @@ public class Breakpoint {
     }
 
     // Specify and parse a list of address ranges
-    public boolean setAddresses(int[][] addresses) {
+    public boolean setAddresses(String addresses) {
+        Integer first  = null; // Value of first address
+        int     mode   = 0;    // Processing state
+        var     ranges = new ArrayList<int[]>(); // Output
+        int     start  = 0;    // Position of address literal
+        int     x      = 0;    // Input position
 
-        // Error checking
+        // Configure instance fields
-        if (addresses == null)
+        addressText = addresses == null ? addresses = "" : addresses;
-            return false;
-        for (var range : addresses)
-            if (range == null || range.length > 2)
-                return false;
 
-        // Accept the new address ranges
+        // Parse the input
-        this.addresses = new int[addresses.length][2];
+        var chars = (addresses + " ").toCharArray();
-        for (int x = 0; x < addresses.length; x++) {
+        for (x = 0; x < chars.length; x++) {
-            var range = addresses[x];
+            char    c     = chars[x];
-            this.addresses[x] = new int[] {
+            boolean white = c == ' ' || c == '\t';
-                range[0],
+            boolean digit =
-                range[range.length - 1]
+                c >= '0' && c <= '9' ||
-            };
+                c >= 'A' && c <= 'F' ||
+                c >= 'a' && c <= 'f'
+            ;
+
+            // Before
+            if (mode == 0) {
+
+                // Ignore whitespace
+                if (white)
+                    continue;
+
+                // Begin an address
+                if (digit) {
+                    start = x;
+                    mode  = 1; // During
+                    continue;
                 }
+
+            }
+
+            // During
+            else if (mode == 1) {
+
+                // Ignore digits
+                if (digit)
+                    continue;
+
+                // The end of the address has been found
+                String text = new String(chars, start, x - start);
+                int    addr = 0;
+                try { addr = (int) Long.parseLong(text, 16); }
+
+                // Could not parse the address
+                catch (Exception e) {
+                    errCode    [ADDRESS] = BADLITERAL;
+                    errPosition[ADDRESS] = start + 1;
+                    errText    [ADDRESS] = text;
+                    if (vue != null)
+                        vue.update(this);
+                    return false;
+                }
+
+                // Processed the first address
+                if (first == null)
+                    first = addr;
+
+                // Processed the second address
+                else {
+                    ranges.add(new int[] { first, addr });
+                    first = null;
+                }
+
+                // Begin searching for a delimiter
+                mode = 2; // After
+                x--;
+                continue;
+            }
+
+            // After
+            else if (mode == 2) {
+
+                // Ignore whitespace
+                if (white)
+                    continue;
+
+                // Begin searching for the second address
+                if (c == '-' && first != null) {
+                    mode = 0; // Before
+                    continue;
+                }
+
+                // All addresses in the range have been processed
+                if (c == ',') {
+                    if (first != null) {
+                        ranges.add(new int[] { first, first });
+                        first = null;
+                    }
+                    mode = 0; // Before
+                    continue;
+                }
+
+            }
+
+            // Invalid character
+            errCode    [ADDRESS] = UNEXPECTED;
+            errPosition[ADDRESS] = x + 1;
+            errText    [ADDRESS] = Character.toString(c);
+            if (vue != null)
+                vue.update(this);
+            return false;
+        } // x
+
+        // Unexpected end of input
+        if (mode == 0 && ranges.size() > 0) {
+            errCode    [ADDRESS] = EARLYEOF;
+            errPosition[ADDRESS] = x + 1;
+            errText    [ADDRESS] = "";
+            if (vue != null)
+                vue.update(this);
+            return false;
+        }
+
+        // A one-address range was processed
+        if (first != null)
+            ranges.add(new int[] { first, first });
+
+        // Parsing was successful
+        this.addresses   = ranges.toArray(new int[ranges.size()][]);
+        this.addressText = addresses;
+        errCode    [ADDRESS] = NONE;
+        errPosition[ADDRESS] = 0;
+        errText    [ADDRESS] = "";
+        if (vue != null)
+            vue.update(this);
         return true;
     }
 
@@ -423,20 +569,26 @@ public class Breakpoint {
 
         // Configure instance fields
         this.condition = condition == null ? condition = "" : condition;
-        errCode        = NONE;
+        errCode    [CONDITION] = NONE;
-        errPosition    = 0;
+        errPosition[CONDITION] = 0;
-        errText        = "";
+        errText    [CONDITION] = "";
         tokens                 = new Token[0];
 
         // Process the expression
         var tokens = parse();
-        if (tokens == null || !validate(tokens))
+        if (tokens == null || !validate(tokens)) {
+            if (vue != null)
+                vue.update(this);
             return false;
+        }
         tree(tokens);
 
         // The expression is empty
-        if (tokens.size() == 0)
+        if (tokens.size() == 0) {
+            if (vue != null)
+                vue.update(this);
             return true;
+        }
 
         // Produce an RPN-ordered list of tokens
         var tok = tokens.remove(0);
@@ -463,12 +615,16 @@ public class Breakpoint {
         this.tokens = tokens.toArray(new Token[tokens.size()]);
 
         // The expression was successfully parsed
+        if (vue != null)
+            vue.update(this);
         return true;
     }
 
     // Specify the display name
     public void setName(String name) {
         this.name = name == null ? "" : name;
+        if (vue != null)
+            vue.update(this);
     }
 
 
@@ -477,12 +633,12 @@ public class Breakpoint {
     //                            Package Methods                            //
     ///////////////////////////////////////////////////////////////////////////
 
-    // Evaluate the condition for an emulation context
+    // Evaluate the condition for a Java emulation context
     boolean evaluate(JavaVue vue, int[] stack) {
 
         // The condition is empty
         if (tokens.length == 0)
-            return isEnabled && errCode == NONE;
+            return isEnabled && errCode[CONDITION] == NONE;
 
         // Process tokens
         int size = 0;
@@ -505,7 +661,7 @@ public class Breakpoint {
     int depth() {
 
         // Error checking
-        if (errCode != NONE)
+        if (errCode[CONDITION] != NONE)
             return 0;
 
         // Count the maximum size of the stack
@@ -520,6 +676,11 @@ public class Breakpoint {
         return max;
     }
 
+    // The breakpoint is being removed from its emulation context
+    void remove() {
+        vue = null;
+    }
+
 
 
     ///////////////////////////////////////////////////////////////////////////
@@ -586,9 +747,9 @@ public class Breakpoint {
 
                 // "x" cannot appear here
                 if (isFloat || x != start + 1 || chars[start] != '0') {
-                    errCode     = UNEXPECTED;
+                    errCode    [CONDITION] = UNEXPECTED;
-                    errPosition = x + 1;
+                    errPosition[CONDITION] = x + 1;
-                    errText     = Character.toString(c);
+                    errText    [CONDITION] = Character.toString(c);
                     return null;
                 }
 
@@ -602,9 +763,9 @@ public class Breakpoint {
 
                 // "." cannot appear here
                 if (isHex || isFloat) {
-                    errCode     = UNEXPECTED;
+                    errCode    [CONDITION] = UNEXPECTED;
-                    errPosition = x + 1;
+                    errPosition[CONDITION] = x + 1;
-                    errText     = Character.toString(c);
+                    errText    [CONDITION] = Character.toString(c);
                     return null;
                 }
 
@@ -637,9 +798,9 @@ public class Breakpoint {
 
             // Could not parse the value
             catch (Exception e) {
-                errCode     = BADLITERAL;
+                errCode    [CONDITION] = BADLITERAL;
-                errPosition = x + 1;
+                errPosition[CONDITION] = x + 1;
-                errText     = ret.text;
+                errText    [CONDITION] = ret.text;
                 return null;
             }
 
@@ -684,9 +845,9 @@ public class Breakpoint {
             }
 
             // The operator was not identified
-            errCode     = BADTOKEN;
+            errCode    [CONDITION] = BADTOKEN;
-            errPosition = start + 1;
+            errPosition[CONDITION] = start + 1;
-            errText     = Character.toString(chars[start]);
+            errText    [CONDITION] = Character.toString(chars[start]);
             return null;
         } // x
 
@@ -739,9 +900,9 @@ public class Breakpoint {
             }
 
             // The token is not recognized
-            errCode     = BADTOKEN;
+            errCode    [CONDITION] = BADTOKEN;
-            errPosition = x + 1;
+            errPosition[CONDITION] = x + 1;
-            errText     = ret.text;
+            errText    [CONDITION] = ret.text;
             return null;
         } // x
 
@@ -830,9 +991,9 @@ public class Breakpoint {
 
                 // The token is invalid
                 if (tok.id != NEGATE) {
-                    errCode     = INVALID;
+                    errCode    [CONDITION] = INVALID;
-                    errPosition = tok.start;
+                    errPosition[CONDITION] = tok.start;
-                    errText     = tok.text;
+                    errText    [CONDITION] = tok.text;
                     return false;
                 }
 
@@ -845,9 +1006,9 @@ public class Breakpoint {
             // Nesting error
             if (tok.type == CLOSE &&
                 (stack.empty() || stack.pop().id != tok.id)) {
-                errCode     = NESTING;
+                errCode    [CONDITION] = NESTING;
-                errPosition = tok.start;
+                errPosition[CONDITION] = tok.start;
-                errText     = tok.text;
+                errText    [CONDITION] = tok.text;
                 return false;
             }
 
@@ -862,9 +1023,9 @@ public class Breakpoint {
 
         // A group was not closed
         if (!stack.empty()) {
-            errCode     = EARLYEOF;
+            errCode    [CONDITION] = EARLYEOF;
-            errPosition = condition.length();
+            errPosition[CONDITION] = condition.length();
-            errText     = stack.pop().text;
+            errText    [CONDITION] = stack.pop().text;
         }
 
         // Successfully parsed the condition

src/desktop/vue/JavaVue.java

@@ -87,12 +87,6 @@ class JavaVue extends Vue {
         return Math.max(0, maxCycles);
     }
 
-    // Evaluate the condition in a breakpoint
-    public boolean evaluate(Breakpoint brk) {
-        return brk != null ? false :
-            brk.evaluate(this, new int[brk.depth() * 2]);
-    }
-
     // Retrieve the application break code
     public int getBreakCode() {
         return breakCode;
@@ -249,6 +243,11 @@ class JavaVue extends Vue {
     //                            Package Methods                            //
     ///////////////////////////////////////////////////////////////////////////
 
+    // Evaluate the condition in a breakpoint
+    boolean evaluate(Breakpoint brk) {
+        return false;
+    }
+
     // Exception break handler
     int onException(Ecxeption exp) {
         return 0;

src/desktop/vue/NativeVue.c

@@ -84,10 +84,10 @@ JNIEXPORT jlong JNICALL Java_vue_NativeVue_construct
 JNIEXPORT void JNICALL Java_vue_NativeVue_dispose
   (JNIEnv *env, jobject vue, jlong handle) {
     Core *core = *(Core **)&handle;
-    if (core->vue.pak.rom != NULL)
+    if (core->breakpoints != NULL) free(core->breakpoints);
-        free(core->vue.pak.rom);
+    if (core->stack       != NULL) free(core->stack      );
-    if (core->vue.pak.ram != NULL)
+    if (core->vue.pak.rom != NULL) free(core->vue.pak.rom);
-        free(core->vue.pak.ram);
+    if (core->vue.pak.ram != NULL) free(core->vue.pak.ram);
     free(core);
 }
 
@@ -98,13 +98,6 @@ JNIEXPORT jint JNICALL Java_vue_NativeVue_emulate
     return vueEmulate(&core->vue, maxCycles);
 }
 
-// Evaluate the condition in a breakpoint
-JNIEXPORT jboolean JNICALL Java_vue_NativeVue_evaluate
-  (JNIEnv *env, jobject vue, jlong handle, jobject brk) {
-    Core *core = *(Core **)&handle;
-    return JNI_FALSE;
-}
-
 // Retrieve the application break code
 JNIEXPORT jint JNICALL Java_vue_NativeVue_getBreakCode
   (JNIEnv *env, jobject vue, jlong handle) {

src/desktop/vue/NativeVue.java

@@ -34,11 +34,6 @@ class NativeVue extends Vue {
     public int emulate(int maxCycles)
         { return emulate(handle, maxCycles); }
 
-    // Evaluate the condition in a breakpoint
-    private native boolean evaluate(long handle, Breakpoint brk);
-    public boolean evaluate(Breakpoint brk)
-        { return evaluate(handle, brk); }
-
     // Retrieve the application break code
     private native int getBreakCode(long handle);
     public int getBreakCode() { return getBreakCode(handle); }
@@ -94,4 +89,15 @@ class NativeVue extends Vue {
     public boolean writeBytes(int address, byte[] src, int offset, int length)
         { return writeBytes(handle, address, src, offset, length); }
 
+
+
+    ///////////////////////////////////////////////////////////////////////////
+    //                            Package Methods                            //
+    ///////////////////////////////////////////////////////////////////////////
+
+    // Evaluate the condition in a breakpoint
+    boolean evaluate(Breakpoint brk) {
+        return false;
+    }
+
 }

src/desktop/vue/Vue.java

@@ -1,8 +1,14 @@
 package vue;
 
+// Java imports
+import java.util.*;
+
 // Template for emulation core implementations
 public abstract class Vue {
 
+    // Instance fields
+    ArrayList<Breakpoint> breakpoints; // Current breakpoints
+
     // Static fields
     private static String nativeID = null; // ID of loaded native library
 
@@ -152,19 +158,53 @@ public abstract class Vue {
 
 
 
+    ///////////////////////////////////////////////////////////////////////////
+    //                             Constructors                              //
+    ///////////////////////////////////////////////////////////////////////////
+
+    // Default constructor
+    Vue() {
+        breakpoints = new ArrayList<Breakpoint>();
+    }
+
+
+
     ///////////////////////////////////////////////////////////////////////////
     //                            Public Methods                             //
     ///////////////////////////////////////////////////////////////////////////
 
+    // Produce a new breakpoint and add it to the collection
+    public Breakpoint breakpoint() {
+        var brk = new Breakpoint(this);
+        breakpoints.add(brk);
+        return brk;
+    }
+
+    // Produce an array of the current breakpoint collection
+    public Breakpoint[] listBreakpoints() {
+        return breakpoints.toArray(new Breakpoint[breakpoints.size()]);
+    }
+
+    // Remove a breakpoint from the collection
+    public boolean remove(Breakpoint brk) {
+        if (!breakpoints.remove(brk))
+            return false;
+        brk.remove();
+        return true;
+    }
+
+
+
+    ///////////////////////////////////////////////////////////////////////////
+    //                           Abstract Methods                            //
+    ///////////////////////////////////////////////////////////////////////////
+
     // Release any used resources
     public abstract void dispose();
 
     // Process the simulation
     public abstract int emulate(int maxCycles);
 
-    // Evaluate the condition in a breakpoint
-    public abstract boolean evaluate(Breakpoint brk);
-
     // Retrieve the application break code
     public abstract int getBreakCode();
 
@@ -200,4 +240,17 @@ public abstract class Vue {
     public abstract boolean writeBytes(int address, byte[] src, int offset,
         int length);
 
+
+
+    ///////////////////////////////////////////////////////////////////////////
+    //                            Package Methods                            //
+    ///////////////////////////////////////////////////////////////////////////
+
+    // Evaluate the condition in a breakpoint
+    abstract boolean evaluate(Breakpoint brk);
+
+    // A breakpoint has been updated
+    void update(Breakpoint brk) {
+    }
+
 }