Fix PowerPC targets compilation on 32 bits hosts:

now that the SPE extension is available for all targets,
 we always need to have some 64 bits temporary registers.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3647 c046a42c-6fe2-441c-8c8c-71466251a162

target-ppc/cpu.h

@@ -520,11 +520,11 @@ struct CPUPPCState {
     /* First are the most commonly used resources
      * during translated code execution
      */
-#if TARGET_GPR_BITS > HOST_LONG_BITS
+#if (HOST_LONG_BITS == 32)
     /* temporary fixed-point registers
-     * used to emulate 64 bits target on 32 bits hosts
+     * used to emulate 64 bits registers on 32 bits hosts
      */
-    ppc_gpr_t t0, t1, t2;
+    uint64_t t0, t1, t2;
 #endif
     ppc_avr_t avr0, avr1, avr2;
 

target-ppc/exec.h

@@ -42,8 +42,8 @@ register unsigned long T0 asm(AREG1);
 register unsigned long T1 asm(AREG2);
 register unsigned long T2 asm(AREG3);
 #endif
-/* We may, sometime, need 64 bits registers on 32 bits target */
-#if TARGET_GPR_BITS > HOST_LONG_BITS
+/* We may, sometime, need 64 bits registers on 32 bits targets */
+#if (HOST_LONG_BITS == 32)
 /* no registers can be used */
 #define T0_64 (env->t0)
 #define T1_64 (env->t1)