From dcdaadb6ea873159487aa2fdbee2c4aa7779e02d Mon Sep 17 00:00:00 2001 From: Lluís Vilanova Date: Thu, 9 Jun 2016 19:31:47 +0200 Subject: trace: [all] Add "guest_mem_before" event The event is described in "trace-events". Note that the "MO_AMASK" flag is not traced, since it does not seem to affect the visible semantics of instructions. [s/inline inline/inline/ to fix clang build. --Stefan] Signed-off-by: Lluís Vilanova Reviewed-by: Richard Henderson Reviewed-by: Peter Maydell Message-id: 146549350711.18437.726780393247474362.stgit@fimbulvetr.bsc.es Signed-off-by: Stefan Hajnoczi --- trace/mem-internal.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++ trace/mem.h | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 80 insertions(+) create mode 100644 trace/mem-internal.h create mode 100644 trace/mem.h (limited to 'trace') diff --git a/trace/mem-internal.h b/trace/mem-internal.h new file mode 100644 index 0000000000..a75e0ff732 --- /dev/null +++ b/trace/mem-internal.h @@ -0,0 +1,46 @@ +/* + * Helper functions for guest memory tracing + * + * Copyright (C) 2016 Lluís Vilanova + * + * 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 + +static inline uint8_t trace_mem_get_info(TCGMemOp op, bool store) +{ + uint8_t res = op; + bool be = (op & MO_BSWAP) == MO_BE; + + /* remove untraced fields */ + res &= (1ULL << 4) - 1; + /* make endianness absolute */ + res &= ~MO_BSWAP; + if (be) { + res |= 1ULL << 3; + } + /* add fields */ + if (store) { + res |= 1ULL << 4; + } + + return res; +} + +static inline uint8_t trace_mem_build_info( + TCGMemOp size, bool sign_extend, TCGMemOp endianness, bool store) +{ + uint8_t res = 0; + res |= size; + res |= (sign_extend << 2); + if (endianness == MO_BE) { + res |= (1ULL << 3); + } + res |= (store << 4); + return res; +} + +#endif /* TRACE__MEM_INTERNAL_H */ diff --git a/trace/mem.h b/trace/mem.h new file mode 100644 index 0000000000..c76a572689 --- /dev/null +++ b/trace/mem.h @@ -0,0 +1,34 @@ +/* + * Helper functions for guest memory tracing + * + * Copyright (C) 2016 Lluís Vilanova + * + * 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_H +#define TRACE__MEM_H + +#include "tcg/tcg.h" + + +/** + * trace_mem_get_info: + * + * Return a value for the 'info' argument in guest memory access traces. + */ +static uint8_t trace_mem_get_info(TCGMemOp op, bool store); + +/** + * trace_mem_build_info: + * + * Return a value for the 'info' argument in guest memory access traces. + */ +static uint8_t trace_mem_build_info(TCGMemOp size, bool sign_extend, + TCGMemOp endianness, bool store); + + +#include "trace/mem-internal.h" + +#endif /* TRACE__MEM_H */ -- cgit v1.2.3-55-g7522