include/exec/memopidx.h

   1 /*
   2  * Combine the MemOp and mmu_idx parameters into a single value.
   3  *
   4  * Authors:
   5  *  Richard Henderson <rth@twiddle.net>
   6  *
   7  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   8  * See the COPYING file in the top-level directory.
   9  */
  10
  11 #ifndef EXEC_MEMOPIDX_H
  12 #define EXEC_MEMOPIDX_H 1
  13
  14 #include "exec/memop.h"
  15
  16 typedef uint32_t MemOpIdx;
  17
  18 /**
  19  * make_memop_idx
  20  * @op: memory operation
  21  * @idx: mmu index
  22  *
  23  * Encode these values into a single parameter.
  24  */
  25 static inline MemOpIdx make_memop_idx(MemOp op, unsigned idx)
  26 {
  27 #ifdef CONFIG_DEBUG_TCG
  28     assert(idx <= 15);
  29 #endif
  30     return (op << 4) | idx;
  31 }
  32
  33 /**
  34  * get_memop
  35  * @oi: combined op/idx parameter
  36  *
  37  * Extract the memory operation from the combined value.
  38  */
  39 static inline MemOp get_memop(MemOpIdx oi)
  40 {
  41     return oi >> 4;
  42 }
  43
  44 /**
  45  * get_mmuidx
  46  * @oi: combined op/idx parameter
  47  *
  48  * Extract the mmu index from the combined value.
  49  */
  50 static inline unsigned get_mmuidx(MemOpIdx oi)
  51 {
  52     return oi & 15;
  53 }
  54
  55 #endif