Fixes "invalid lvalue in assignment" errors when building with gcc 4
http://sourceware.org/ml/crossgcc/2005-11/msg00172.html

--- gdb-6.3/sim/arm/iwmmxt.c	2003-03-27 18:13:33.000000000 +0100
+++ gdb-6.3.50.20051117/sim/arm/iwmmxt.c	2005-05-12 09:36:59.000000000 +0200
@@ -14,7 +14,7 @@
  
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
 
 #include "armdefs.h"
 #include "armos.h"
@@ -2114,7 +2114,7 @@ WMAC (ARMword instr)
 
 	  s = (signed long) a * (signed long) b;
 
-	  (signed long long) t += s;
+	  t = t + (ARMdword) s;
         }
       else
         {
@@ -2130,7 +2130,7 @@ WMAC (ARMword instr)
     wR [BITS (12, 15)] = 0;
 
   if (BIT (21))	/* Signed.  */
-    (signed long long) wR[BITS (12, 15)] += (signed long long) t;
+    wR[BITS (12, 15)] += t;
   else
     wR [BITS (12, 15)] += t;
 
@@ -2166,7 +2166,7 @@ WMADD (ARMword instr)
 	  b = wRHALF (BITS (0, 3), i * 2);
 	  b = EXTEND16 (b);
 
-	  (signed long) s1 = a * b;
+	  s1 = (ARMdword) (a * b);
 
 	  a = wRHALF (BITS (16, 19), i * 2 + 1);
 	  a = EXTEND16 (a);
@@ -2174,7 +2174,7 @@ WMADD (ARMword instr)
 	  b = wRHALF (BITS (0, 3), i * 2 + 1);
 	  b = EXTEND16 (b);
 
-	  (signed long) s2 = a * b;
+	  s2 = (ARMdword) (a * b);
         }
       else			/* Unsigned.  */
         {
@@ -2183,12 +2183,12 @@ WMADD (ARMword instr)
 	  a = wRHALF (BITS (16, 19), i * 2);
 	  b = wRHALF (BITS ( 0,  3), i * 2);
 
-	  (unsigned long) s1 = a * b;
+	  s1 = (ARMdword) (a * b);
 
 	  a = wRHALF (BITS (16, 19), i * 2 + 1);
 	  b = wRHALF (BITS ( 0,  3), i * 2 + 1);
 
-	  (signed long) s2 = a * b;
+	  s2 = (ARMdword) a * b;
         }
 
       r |= (ARMdword) ((s1 + s2) & 0xffffffff) << (i ? 32 : 0);
@@ -2837,7 +2837,7 @@ WSLL (ARMul_State * state, ARMword instr
       if (shift > 63)
 	r = 0;
       else
-	r = ((wR[BITS (16, 19)] & 0xffffffffffffffff) << shift);
+	r = ((wR[BITS (16, 19)] & 0xffffffffffffffffULL) << shift);
 
       SIMD64_SET (psr, NBIT64 (r), SIMD_NBIT);
       SIMD64_SET (psr, ZBIT64 (r), SIMD_ZBIT);
@@ -2914,9 +2914,9 @@ WSRA (ARMul_State * state, ARMword instr
       
     case Dqual:
       if (shift > 63)
-	r = (wR [BITS (16, 19)] & 0x8000000000000000) ? 0xffffffffffffffff : 0;
+	r = (wR [BITS (16, 19)] & 0x8000000000000000ULL) ? 0xffffffffffffffffULL : 0;
       else
-	r = ((signed long long) (wR[BITS (16, 19)] & 0xffffffffffffffff) >> shift);
+	r = ((signed long long) (wR[BITS (16, 19)] & 0xffffffffffffffffULL) >> shift);
       SIMD64_SET (psr, NBIT64 (r), SIMD_NBIT);
       SIMD64_SET (psr, ZBIT64 (r), SIMD_ZBIT);
       break;
@@ -2985,7 +2985,7 @@ WSRL (ARMul_State * state, ARMword instr
       if (shift > 63)
 	r = 0;
       else
-	r = (wR [BITS (16, 19)] & 0xffffffffffffffff) >> shift;
+	r = (wR [BITS (16, 19)] & 0xffffffffffffffffULL) >> shift;
 
       SIMD64_SET (psr, NBIT64 (r), SIMD_NBIT);
       SIMD64_SET (psr, ZBIT64 (r), SIMD_ZBIT);
@@ -3287,7 +3287,7 @@ WUNPCKEH (ARMul_State * state, ARMword i
       r = wRWORD (BITS (16, 19), 1);
 
       if (BIT (21) && NBIT32 (r))
-	r |= 0xffffffff00000000;
+	r |= 0xffffffff00000000ULL;
 
       SIMD64_SET (psr, NBIT64 (r), SIMD_NBIT);
       SIMD64_SET (psr, ZBIT64 (r), SIMD_ZBIT);
@@ -3354,7 +3354,7 @@ WUNPCKEL (ARMul_State * state, ARMword i
       r = wRWORD (BITS (16, 19), 0);
 
       if (BIT (21) && NBIT32 (r))
-	r |= 0xffffffff00000000;
+	r |= 0xffffffff00000000ULL;
 
       SIMD64_SET (psr, NBIT64 (r), SIMD_NBIT);
       SIMD64_SET (psr, ZBIT64 (r), SIMD_ZBIT);