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 0xf /* size shift mask */
  14#define TRACE_MEM_SE (1ULL << 4)    /* sign extended (y/n) */
  15#define TRACE_MEM_BE (1ULL << 5)    /* big endian (y/n) */
  16#define TRACE_MEM_ST (1ULL << 6)    /* store (y/n) */
  17#define TRACE_MEM_MMU_SHIFT 8       /* mmu idx */
  18
  19static inline uint16_t trace_mem_build_info(
  20    int size_shift, bool sign_extend, MemOp endianness,
  21    bool store, unsigned int mmu_idx)
  22{
  23    uint16_t res;
  24
  25    res = size_shift & TRACE_MEM_SZ_SHIFT_MASK;
  26    if (sign_extend) {
  27        res |= TRACE_MEM_SE;
  28    }
  29    if (endianness == MO_BE) {
  30        res |= TRACE_MEM_BE;
  31    }
  32    if (store) {
  33        res |= TRACE_MEM_ST;
  34    }
  35#ifdef CONFIG_SOFTMMU
  36    res |= mmu_idx << TRACE_MEM_MMU_SHIFT;
  37#endif
  38    return res;
  39}
  40
  41static inline uint16_t trace_mem_get_info(MemOp op,
  42                                          unsigned int mmu_idx,
  43                                          bool store)
  44{
  45    return trace_mem_build_info(op & MO_SIZE, !!(op & MO_SIGN),
  46                                op & MO_BSWAP, store,
  47                                mmu_idx);
  48}
  49
  50/* Used by the atomic helpers */
  51static inline
  52uint16_t trace_mem_build_info_no_se_be(int size_shift, bool store,
  53                                       TCGMemOpIdx oi)
  54{
  55    return trace_mem_build_info(size_shift, false, MO_BE, store,
  56                                get_mmuidx(oi));
  57}
  58
  59static inline
  60uint16_t trace_mem_build_info_no_se_le(int size_shift, bool store,
  61                                       TCGMemOpIdx oi)
  62{
  63    return trace_mem_build_info(size_shift, false, MO_LE, store,
  64                                get_mmuidx(oi));
  65}
  66
  67#endif /* TRACE__MEM_INTERNAL_H */
  68