291987c306
This will allow us to trace 32k-long memory accesses (although our maximum is something like 256 bytes at the moment). Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Emilio G. Cota <cota@braap.org> [AJB: expanded to 3->4 bits] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
55 lines
1.4 KiB
C
55 lines
1.4 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 0xf /* size shift mask */
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#define TRACE_MEM_SE (1ULL << 4) /* sign extended (y/n) */
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#define TRACE_MEM_BE (1ULL << 5) /* big endian (y/n) */
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#define TRACE_MEM_ST (1ULL << 6) /* 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, MemOp 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(MemOp 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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static inline
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uint8_t trace_mem_build_info_no_se_be(int size_shift, bool store)
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{
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return trace_mem_build_info(size_shift, false, MO_BE, store);
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}
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static inline
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uint8_t trace_mem_build_info_no_se_le(int size_shift, bool store)
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{
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return trace_mem_build_info(size_shift, false, MO_LE, store);
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}
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#endif /* TRACE__MEM_INTERNAL_H */
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