trace/mem-internal.h

   1 /*
   2  * Helper functions for guest memory tracing
   3  *
   4  * Copyright (C) 2016 Lluís Vilanova <vilanova@ac.upc.edu>
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  */
   9
  10 #ifndef TRACE__MEM_INTERNAL_H
  11 #define TRACE__MEM_INTERNAL_H
  12
  13 #define TRACE_MEM_SZ_SHIFT_MASK 0x7 /* size shift mask */
  14 #define TRACE_MEM_SE (1ULL << 3)    /* sign extended (y/n) */
  15 #define TRACE_MEM_BE (1ULL << 4)    /* big endian (y/n) */
  16 #define TRACE_MEM_ST (1ULL << 5)    /* store (y/n) */
  17
  18 static inline uint8_t trace_mem_build_info(
  19     int size_shift, bool sign_extend, TCGMemOp endianness, bool store)
  20 {
  21     uint8_t res;
  22
  23     res = size_shift & TRACE_MEM_SZ_SHIFT_MASK;
  24     if (sign_extend) {
  25         res |= TRACE_MEM_SE;
  26     }
  27     if (endianness == MO_BE) {
  28         res |= TRACE_MEM_BE;
  29     }
  30     if (store) {
  31         res |= TRACE_MEM_ST;
  32     }
  33     return res;
  34 }
  35
  36 static inline uint8_t trace_mem_get_info(TCGMemOp op, bool store)
  37 {
  38     return trace_mem_build_info(op & MO_SIZE, !!(op & MO_SIGN),
  39                                 op & MO_BSWAP, store);
  40 }
  41
  42 #endif /* TRACE__MEM_INTERNAL_H */