LXR qemu/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
  18static 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
  36static 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
  42static inline
  43uint8_t trace_mem_build_info_no_se_be(int size_shift, bool store)
  44{
  45    return trace_mem_build_info(size_shift, false, MO_BE, store);
  46}
  47
  48static inline
  49uint8_t trace_mem_build_info_no_se_le(int size_shift, bool store)
  50{
  51    return trace_mem_build_info(size_shift, false, MO_LE, store);
  52}
  53
  54#endif /* TRACE__MEM_INTERNAL_H */
  55