fix arm64 shorten-64-to-32

Author: lambdageek

src/mono/mono/arch/arm64/arm64-codegen.h

@@ -170,7 +170,7 @@ arm_is_bl_disp (void *code, void *target)
 static G_GNUC_UNUSED inline unsigned int
 arm_get_disp (void *p, void *target)
 {
-	unsigned int disp = ((char*)target - (char*)p) / 4;
+	unsigned int disp = (unsigned int) ((char*)target - (char*)p) / 4;
 
 	if (target)
 		g_assert (arm_is_bl_disp (p, target));
@@ -188,15 +188,15 @@ arm_get_disp (void *p, void *target)
 static G_GNUC_UNUSED inline gboolean
 arm_is_disp19 (void *code, void *target)
 {
-	gint64 disp = ((char*)(target) - (char*)(code)) / 4;
+	gint64 disp = (unsigned int) (((char*)(target) - (char*)(code)) / 4);
 
 	return (disp > -(1 << 18)) && (disp < (1 << 18));
 }
 
 static G_GNUC_UNUSED inline unsigned int
 arm_get_disp19 (void *p, void *target)
 {
-	unsigned int disp = ((char*)target - (char*)p) / 4;
+	unsigned int disp = (unsigned int) (((char*)target - (char*)p) / 4);
 
 	if (target)
 		g_assert (arm_is_disp19 (p, target));
@@ -224,7 +224,7 @@ arm_get_disp19 (void *p, void *target)
 static G_GNUC_UNUSED inline unsigned int
 arm_get_disp15 (void *p, void *target)
 {
-	unsigned int disp = ((char*)target - (char*)p) / 4;
+	unsigned int disp = (unsigned int) (((char*)target - (char*)p) / 4);
 	return (disp & 0x7fff);
 }