Fix spicious pointer scaling

solve #135

Author: qwe661234

src/emulate.c

@@ -144,9 +144,9 @@ static uint32_t *csr_get_ptr(riscv_t *rv, uint32_t csr)
 
     /* Machine Counter/Timers */
     case CSR_CYCLE: /* Cycle counter for RDCYCLE instruction */
-        return (uint32_t *) (&rv->csr_cycle) + 0;
+        return &((uint32_t *) &rv->csr_cycle)[0];
     case CSR_CYCLEH: /* Upper 32 bits of cycle */
-        return (uint32_t *) (&rv->csr_cycle) + 1;
+        return &((uint32_t *) &rv->csr_cycle)[0];
 
     /* TIME/TIMEH - very roughly about 1 ms per tick */
     case CSR_TIME: { /* Timer for RDTIME instruction */