--- a/tools/objlink.c	Tue Feb 03 20:07:38 2015 +0200
+++ b/tools/objlink.c	Tue Feb 03 20:27:12 2015 +0200
@@ -134,7 +134,7 @@
 
 Uint32     optInitValue = 0;
 int        optInitValueType = 1;
-int    optCropStart, optCropEnd;
+unsigned int optCropStart, optCropEnd;
 BOOL       optCropOutput = FALSE;
 
 int    optLoadAddress = LA_AUTO;
@@ -236,10 +236,10 @@
 }
 
 
-BOOL dmParseSection(const char *arg, int *sectStart, int *sectEnd, char **sectName, BOOL canHasName)
+BOOL dmParseSection(const char *arg, unsigned int *sectStart, unsigned int *sectEnd, char **sectName, BOOL canHasName)
 {
     char sectMode, *sep, *str, *namesep;
-    int tmpi;
+    unsigned int tmpi;
 
     // Define reserved section
     // Create a copy of the argument
@@ -323,7 +323,7 @@
 
 BOOL dmParseInputFile(char *arg, const int type1, const int type2, const char *desc, BOOL requireAddr)
 {
-    int tmpi = 0;
+    unsigned int tmpi = 0;
     BOOL hasAddr = FALSE;
     char *sep;
 
@@ -356,7 +356,7 @@
 BOOL argHandleOpt(const int optN, char *optArg, char *currArg)
 {
     char *p;
-    int tmpi;
+    unsigned int tmpi;
 
     switch (optN) {
     case 0:
@@ -456,7 +456,7 @@
     case 12:
         {
             char *sectName = "Clear";
-            int sectStart, sectEnd, sectLen;
+            unsigned int sectStart, sectEnd, sectLen;
             if (!dmParseSection(optArg, &sectStart, &sectEnd, &sectName, TRUE))
                 return FALSE;
 
@@ -494,7 +494,7 @@
                 dmError("Invalid loading address '%s'.\n", optArg);
                 return FALSE;
             }
-            if (tmpi < 0 || tmpi >= 64*1024)
+            if (tmpi >= 64*1024)
             {
                 dmError("Invalid or insane loading address %d/$%x!\n",
                     tmpi);