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3d69b95e5e
Add some defines for the mem_info bits, simplify trace_mem_build_info, and also simplify trace_mem_get_info by making it a wrapper around trace_mem_build_info. This paves the way for increasing size_shift by one bit. Signed-off-by: Emilio G. Cota <cota@braap.org> Message-id: 1527028012-21888-3-git-send-email-cota@braap.org Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/*
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* Helper functions for guest memory tracing
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*
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* Copyright (C) 2016 Lluís Vilanova <vilanova@ac.upc.edu>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef TRACE__MEM_INTERNAL_H
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#define TRACE__MEM_INTERNAL_H
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#define TRACE_MEM_SZ_SHIFT_MASK 0x3 /* size shift mask */
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#define TRACE_MEM_SE (1ULL << 2) /* sign extended (y/n) */
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#define TRACE_MEM_BE (1ULL << 3) /* big endian (y/n) */
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#define TRACE_MEM_ST (1ULL << 4) /* store (y/n) */
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static inline uint8_t trace_mem_build_info(
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int size_shift, bool sign_extend, TCGMemOp endianness, bool store)
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{
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uint8_t res;
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res = size_shift & TRACE_MEM_SZ_SHIFT_MASK;
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if (sign_extend) {
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res |= TRACE_MEM_SE;
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}
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if (endianness == MO_BE) {
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res |= TRACE_MEM_BE;
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}
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if (store) {
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res |= TRACE_MEM_ST;
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}
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return res;
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}
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static inline uint8_t trace_mem_get_info(TCGMemOp op, bool store)
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{
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return trace_mem_build_info(op & MO_SIZE, !!(op & MO_SIGN),
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op & MO_BSWAP, store);
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}
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#endif /* TRACE__MEM_INTERNAL_H */
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