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/* Copyright (c) 2007, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ---
*
* Table of relevant information about how to decode the ModR/M byte.
* Based on information in the IA 32 Intel Architecture
* Software Developer's Manual Volume 2: Instruction Set Reference.
*/
#include "mini_disassembler.h"
#include "mini_disassembler_types.h"
namespace sidestep {
const ModrmEntry MiniDisassembler::s_ia16_modrm_map_[] = {
// mod == 00
/* r/m == 000 */ { false, false, OS_ZERO },
/* r/m == 001 */ { false, false, OS_ZERO },
/* r/m == 010 */ { false, false, OS_ZERO },
/* r/m == 011 */ { false, false, OS_ZERO },
/* r/m == 100 */ { false, false, OS_ZERO },
/* r/m == 101 */ { false, false, OS_ZERO },
/* r/m == 110 */ { true, false, OS_WORD },
/* r/m == 111 */ { false, false, OS_ZERO },
// mod == 01
/* r/m == 000 */ { true, false, OS_BYTE },
/* r/m == 001 */ { true, false, OS_BYTE },
/* r/m == 010 */ { true, false, OS_BYTE },
/* r/m == 011 */ { true, false, OS_BYTE },
/* r/m == 100 */ { true, false, OS_BYTE },
/* r/m == 101 */ { true, false, OS_BYTE },
/* r/m == 110 */ { true, false, OS_BYTE },
/* r/m == 111 */ { true, false, OS_BYTE },
// mod == 10
/* r/m == 000 */ { true, false, OS_WORD },
/* r/m == 001 */ { true, false, OS_WORD },
/* r/m == 010 */ { true, false, OS_WORD },
/* r/m == 011 */ { true, false, OS_WORD },
/* r/m == 100 */ { true, false, OS_WORD },
/* r/m == 101 */ { true, false, OS_WORD },
/* r/m == 110 */ { true, false, OS_WORD },
/* r/m == 111 */ { true, false, OS_WORD },
// mod == 11
/* r/m == 000 */ { false, false, OS_ZERO },
/* r/m == 001 */ { false, false, OS_ZERO },
/* r/m == 010 */ { false, false, OS_ZERO },
/* r/m == 011 */ { false, false, OS_ZERO },
/* r/m == 100 */ { false, false, OS_ZERO },
/* r/m == 101 */ { false, false, OS_ZERO },
/* r/m == 110 */ { false, false, OS_ZERO },
/* r/m == 111 */ { false, false, OS_ZERO }
};
const ModrmEntry MiniDisassembler::s_ia32_modrm_map_[] = {
// mod == 00
/* r/m == 000 */ { false, false, OS_ZERO },
/* r/m == 001 */ { false, false, OS_ZERO },
/* r/m == 010 */ { false, false, OS_ZERO },
/* r/m == 011 */ { false, false, OS_ZERO },
/* r/m == 100 */ { false, true, OS_ZERO },
/* r/m == 101 */ { true, false, OS_DOUBLE_WORD },
/* r/m == 110 */ { false, false, OS_ZERO },
/* r/m == 111 */ { false, false, OS_ZERO },
// mod == 01
/* r/m == 000 */ { true, false, OS_BYTE },
/* r/m == 001 */ { true, false, OS_BYTE },
/* r/m == 010 */ { true, false, OS_BYTE },
/* r/m == 011 */ { true, false, OS_BYTE },
/* r/m == 100 */ { true, true, OS_BYTE },
/* r/m == 101 */ { true, false, OS_BYTE },
/* r/m == 110 */ { true, false, OS_BYTE },
/* r/m == 111 */ { true, false, OS_BYTE },
// mod == 10
/* r/m == 000 */ { true, false, OS_DOUBLE_WORD },
/* r/m == 001 */ { true, false, OS_DOUBLE_WORD },
/* r/m == 010 */ { true, false, OS_DOUBLE_WORD },
/* r/m == 011 */ { true, false, OS_DOUBLE_WORD },
/* r/m == 100 */ { true, true, OS_DOUBLE_WORD },
/* r/m == 101 */ { true, false, OS_DOUBLE_WORD },
/* r/m == 110 */ { true, false, OS_DOUBLE_WORD },
/* r/m == 111 */ { true, false, OS_DOUBLE_WORD },
// mod == 11
/* r/m == 000 */ { false, false, OS_ZERO },
/* r/m == 001 */ { false, false, OS_ZERO },
/* r/m == 010 */ { false, false, OS_ZERO },
/* r/m == 011 */ { false, false, OS_ZERO },
/* r/m == 100 */ { false, false, OS_ZERO },
/* r/m == 101 */ { false, false, OS_ZERO },
/* r/m == 110 */ { false, false, OS_ZERO },
/* r/m == 111 */ { false, false, OS_ZERO },
};
}; // namespace sidestep
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