- register more exceptions

- PC+4 if current PC points to breakpoint



git-svn-id: http://moon:8086/svn/mips@90 a8ebac50-d88d-4704-bea3-6648445a41b3

src/libsys/gdb_stub.c

@@ -402,6 +402,11 @@ hexToInt(char **ptr, unsigned long *intValue)
 	return (numChars);
 }
 
+int isBreak(unsigned long instr)
+{
+	return ((instr & 0xFC00003F) == 0x0000000D);
+}
+
 /*
  * This function does all command procesing for interfacing to gdb.  It
  * returns 1 if you should skip the instruction at the trap address, 0
@@ -417,9 +422,11 @@ handle_exception (unsigned long *registers)
 	unsigned long length;
 	char *ptr;
 	unsigned long *sp;
-
-	// branch shadow
-	if (registers[CR] & 0x80000000)
+	
+	unsigned long *pAddr = (unsigned long *)registers[PC];
+	
+	// is break
+	if (isBreak(*pAddr))
 	{
 		registers[PC] += 4;
 	}