Remove all signed divisions

grub-core/gfxmenu/gui_circular_progress.c

@@ -36,8 +36,8 @@ struct grub_gui_circular_progress
   int visible;
   int start;
   int end;
-  int value;
+  unsigned value;
-  int num_ticks;
+  unsigned num_ticks;
   int start_angle;
   int ticks_disappear;
   char *theme_dir;
@@ -238,7 +238,12 @@ parse_angle (const char *value)
       /* Unicode symbol of degrees (a circle, U+b0). Put here in UTF-8 to
 	 avoid potential problem with text file reesncoding  */
       || grub_strcmp (ptr, "\xc2\xb0") == 0)
-    angle = (angle * 64 + 45) / 90;
+    {
+      if (angle >= 0)
+	angle = ((unsigned) angle * 64 + 45) / 90;
+      else
+	angle = -((unsigned) -angle * 64 + 45) / 90;
+    }
   return angle;
 }
 

grub-core/gfxmenu/gui_list.c

@@ -271,14 +271,14 @@ draw_scrollbar (list_impl_t self,
       tracklen += thumb_vertical_pad;
       tracktop -= thumb->get_top_pad (thumb);
     }
-  int thumby = tracktop + tracklen * (value - min) / (max - min);
+  int thumby = tracktop + tracklen * (value - min) / (unsigned) (max - min);
-  int thumbheight = tracklen * extent / (max - min) + 1;
+  int thumbheight = tracklen * extent / (unsigned) (max - min) + 1;
   /* Rare occasion: too many entries or too low height. */
   if (thumbheight < thumb_vertical_pad)
     {
       thumbheight = thumb_vertical_pad;
       thumby = tracktop + ((tracklen - thumb_vertical_pad) * (value - min)
-                           / (max - extent));
+                           / (unsigned)(max - extent));
     }
   int thumbx = frame->get_left_pad (frame);
   int thumbwidth = scrollbar_width - frame_horizontal_pad;

grub-core/gfxmenu/gui_progress_bar.c

@@ -170,7 +170,7 @@ draw_pixmap_bar (grub_gui_progress_bar_t self)
     hlheight -= hl_v_pad;
 
   barwidth = (tracklen * (self->value - self->start) 
-	      / (self->end - self->start));
+	      / (unsigned) (self->end - self->start));
 
   if (barwidth >= hl_h_pad)
     {

grub-core/lib/libgcrypt/mpi/longlong.h

@@ -170,7 +170,7 @@ MA 02111-1307, USA. */
     (pl) = __m0 * __m1; 						\
   } while (0)
 #define UMUL_TIME 46
-#ifndef LONGLONG_STANDALONE
+#if 0
 #define udiv_qrnnd(q, r, n1, n0, d) \
   do { UDItype __r;							\
     (q) = __udiv_qrnnd (&__r, (n1), (n0), (d)); 			\
@@ -353,7 +353,7 @@ extern UDItype __udiv_qrnnd ();
 #define UMUL_TIME 40
 #define UDIV_TIME 80
 #endif
-#ifndef LONGLONG_STANDALONE
+#if 0
 #define udiv_qrnnd(q, r, n1, n0, d) \
   do { USItype __r;							\
     (q) = __udiv_qrnnd (&__r, (n1), (n0), (d)); 			\
@@ -1294,7 +1294,7 @@ typedef unsigned int UTItype __attribute__ ((mode (TI)));
 #define UMUL_TIME 39		/* 39 instructions */
 #endif
 #ifndef udiv_qrnnd
-#ifndef LONGLONG_STANDALONE
+#if 0
 #define udiv_qrnnd(q, r, n1, n0, d) \
   do { USItype __r;							\
     (q) = __udiv_qrnnd (&__r, (n1), (n0), (d)); 			\

grub-core/lib/libgcrypt/mpi/mpi-pow.c

@@ -75,9 +75,6 @@ gcry_mpi_powm (gcry_mpi_t res,
   rp = res->d;
   ep = expo->d;
 
-  if (!msize)
-    msize = 1 / msize;	    /* Provoke a signal.  */
-
   if (!esize)
     {
       /* Exponent is zero, result is 1 mod MOD, i.e., 1 or 0 depending

grub-core/lib/libgcrypt/mpi/mpih-div.c

@@ -214,7 +214,7 @@ _gcry_mpih_divrem( mpi_ptr_t qp, mpi_size_t qextra_limbs,
       case 0:
 	/* We are asked to divide by zero, so go ahead and do it!  (To make
 	   the compiler not remove this statement, return the value.)  */
-	return 1 / dsize;
+	return 0;//1 / dsize;
 
       case 1:
 	{

grub-core/normal/datetime.c

@@ -40,7 +40,8 @@ grub_get_weekday (struct grub_datetime *datetime)
   y = datetime->year - a;
   m = datetime->month + 12 * a - 2;
 
-  return (datetime->day + y + y / 4 - y / 100 + y / 400 + (31 * m / 12)) % 7;
+  return ((unsigned)(datetime->day + y + y / 4 - y / 100 + y / 400
+		     + (31 * m / 12))) % 7;
 }
 
 const char *

grub-core/term/tparm.c

@@ -614,13 +614,13 @@ tparam_internal(const char *string, va_list ap)
 	    case '/':
 		y = npop();
 		x = npop();
-		npush(y ? (x / y) : 0);
+		npush(y ? ((unsigned) x / (unsigned) y) : 0);
 		break;
 
 	    case 'm':
 		y = npop();
 		x = npop();
-		npush(y ? (x % y) : 0);
+		npush(y ? ((unsigned) x % (unsigned) y) : 0);
 		break;
 
 	    case 'A':

include/grub/gui.h

@@ -123,13 +123,27 @@ typedef signed grub_fixed_signed_t;
 static inline signed
 grub_fixed_sfs_divide (signed a, grub_fixed_signed_t b)
 {
-  return (a * GRUB_FIXED_1) / b;
+  if (b < 0)
+    {
+      b = -b;
+      a = -a;
+    }
+  if (a < 0)
+    return -((unsigned) a * GRUB_FIXED_1) / (unsigned) b;
+  return ((unsigned) a * GRUB_FIXED_1) / (unsigned) b;
 }
 
 static inline grub_fixed_signed_t
 grub_fixed_fsf_divide (grub_fixed_signed_t a, signed b)
 {
-  return a / b;
+  if (b < 0)
+    {
+      b = -b;
+      a = -a;
+    }
+  if (a < 0)
+    return -(unsigned) a / (unsigned) b;
+  return (unsigned) a / (unsigned) b;
 }
 
 static inline signed