X-Git-Url: http://deadsoftware.ru/gitweb?a=blobdiff_plain;f=rtl%2FSYSTEM.java;h=20cbe60f2115f1167d1076d32f81b2f7a3040386;hb=f226da0f861c2dbf26d3851fbe47794b21a92a25;hp=f98236bd90926eeb0ca4d8dd58c46e190e43cd8e;hpb=9f8036eb00032fa7f756113365cb42e05ab262df;p=dsw-obn.git

diff --git a/rtl/SYSTEM.java b/rtl/SYSTEM.java
index f98236b..20cbe60 100644
--- a/rtl/SYSTEM.java
+++ b/rtl/SYSTEM.java
@@ -17,17 +17,34 @@ public class SYSTEM
 		return i;
 	}
 
-	/* Встроенная процедура COPY(x, v) */
+	public static String STRING(byte[] x)
+	{
+		return new String(x, 0, LEN(x));
+	}
+
 	public static void COPY(byte[] x, byte[] v)
 	{
-		int len_x = LEN(x);
-		int len_v = v.length - 1;
-		int len = (len_x < len_v) ? (len_x) : (len_v);
-		for(int i = 0; i < len; i++)
+		int ix = LEN(x);
+		int iv = v.length - 1;
+
+		int i = 0;
+		int len = (ix < iv) ? (ix) : (iv);
+		while(i < len)
 		{
 			v[i] = x[i];
+			i += 1;
+		}
+		v[i] = 0;
+	}
+
+	public static int STRCMP(byte[] a, byte[] b)
+	{
+		int i = 0;
+		while(a[i] != 0 && a[i] == b[i])
+		{
+			i += 1;
 		}
-		v[len] = 0;
+		return a[i] - b[i];
 	}
 
 	public static void HALT(long n)
@@ -44,4 +61,70 @@ public class SYSTEM
 	{
 		assert x : n;
 	}
+
+	public static void TRAP(long n)
+	{
+		if(n == -1)
+		{
+			throw new RuntimeException("CASE TRAP");
+		}
+		else if(n == -2)
+		{
+			throw new RuntimeException("WITH TRAP");
+		}
+		else if(n == -3)
+		{
+			throw new RuntimeException("NOT IMPLEMENTED");
+		}
+		else
+		{
+			throw new RuntimeException("TRAP CODE " + n);
+		}
+	}
+
+	public static int ASH(int x, int n)
+	{
+		return (n > 0) ? (x << n) : (x >> Math.abs(n));
+	}
+
+	public static long ASH(long x, long n)
+	{
+		return (n > 0) ? (x << n) : (x >> Math.abs(n));
+	}
+
+	public static int LSH(int x, int n)
+	{
+		return (n > 0) ? (x << n) : (x >>> Math.abs(n));
+	}
+
+	public static long LSH(long x, long n)
+	{
+		return (n > 0) ? (x << n) : (x >>> Math.abs(n));
+	}
+
+	public static int ROT(int x, int n)
+	{
+		if(n > 0)
+		{
+			return (x << n) | (x >>> (Integer.SIZE - n));
+		}
+		else
+		{
+			n = Math.abs(n);
+			return (x >>> n) | (x << (Integer.SIZE - n));
+		}
+	}
+
+	public static long ROT(long x, long n)
+	{
+		if(n > 0)
+		{
+			return (x << n) | (x >>> (Long.SIZE - n));
+		}
+		else
+		{
+			n = Math.abs(n);
+			return (x >>> n) | (x << (Long.SIZE - n));
+		}
+	}
 }