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/*
* Helper functions for guest memory tracing
*
* Copyright (C) 2016 Lluís Vilanova <vilanova@ac.upc.edu>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef TRACE__MEM_INTERNAL_H
#define TRACE__MEM_INTERNAL_H
#define TRACE_MEM_SZ_SHIFT_MASK 0xf /* size shift mask */
#define TRACE_MEM_SE (1ULL << 4) /* sign extended (y/n) */
#define TRACE_MEM_BE (1ULL << 5) /* big endian (y/n) */
#define TRACE_MEM_ST (1ULL << 6) /* store (y/n) */
static inline uint8_t trace_mem_build_info(
int size_shift, bool sign_extend, MemOp endianness, bool store)
{
uint8_t res;
res = size_shift & TRACE_MEM_SZ_SHIFT_MASK;
if (sign_extend) {
res |= TRACE_MEM_SE;
}
if (endianness == MO_BE) {
res |= TRACE_MEM_BE;
}
if (store) {
res |= TRACE_MEM_ST;
}
return res;
}
static inline uint8_t trace_mem_get_info(MemOp op, bool store)
{
return trace_mem_build_info(op & MO_SIZE, !!(op & MO_SIGN),
op & MO_BSWAP, store);
}
static inline
uint8_t trace_mem_build_info_no_se_be(int size_shift, bool store)
{
return trace_mem_build_info(size_shift, false, MO_BE, store);
}
static inline
uint8_t trace_mem_build_info_no_se_le(int size_shift, bool store)
{
return trace_mem_build_info(size_shift, false, MO_LE, store);
}
#endif /* TRACE__MEM_INTERNAL_H */
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