Remove all signed divisions

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:
 	{