1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/security/sandbox/win/src/sidestep/ia32_modrm_map.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,92 @@
1.4 +// Copyright (c) 2012 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +// Table of relevant information about how to decode the ModR/M byte.
1.9 +// Based on information in the IA-32 Intel Architecture
1.10 +// Software Developer's Manual Volume 2: Instruction Set Reference.
1.11 +
1.12 +#include "sandbox/win/src/sidestep/mini_disassembler.h"
1.13 +#include "sandbox/win/src/sidestep/mini_disassembler_types.h"
1.14 +
1.15 +namespace sidestep {
1.16 +
1.17 +const ModrmEntry MiniDisassembler::s_ia16_modrm_map_[] = {
1.18 +// mod == 00
1.19 + /* r/m == 000 */ { false, false, OS_ZERO },
1.20 + /* r/m == 001 */ { false, false, OS_ZERO },
1.21 + /* r/m == 010 */ { false, false, OS_ZERO },
1.22 + /* r/m == 011 */ { false, false, OS_ZERO },
1.23 + /* r/m == 100 */ { false, false, OS_ZERO },
1.24 + /* r/m == 101 */ { false, false, OS_ZERO },
1.25 + /* r/m == 110 */ { true, false, OS_WORD },
1.26 + /* r/m == 111 */ { false, false, OS_ZERO },
1.27 +// mod == 01
1.28 + /* r/m == 000 */ { true, false, OS_BYTE },
1.29 + /* r/m == 001 */ { true, false, OS_BYTE },
1.30 + /* r/m == 010 */ { true, false, OS_BYTE },
1.31 + /* r/m == 011 */ { true, false, OS_BYTE },
1.32 + /* r/m == 100 */ { true, false, OS_BYTE },
1.33 + /* r/m == 101 */ { true, false, OS_BYTE },
1.34 + /* r/m == 110 */ { true, false, OS_BYTE },
1.35 + /* r/m == 111 */ { true, false, OS_BYTE },
1.36 +// mod == 10
1.37 + /* r/m == 000 */ { true, false, OS_WORD },
1.38 + /* r/m == 001 */ { true, false, OS_WORD },
1.39 + /* r/m == 010 */ { true, false, OS_WORD },
1.40 + /* r/m == 011 */ { true, false, OS_WORD },
1.41 + /* r/m == 100 */ { true, false, OS_WORD },
1.42 + /* r/m == 101 */ { true, false, OS_WORD },
1.43 + /* r/m == 110 */ { true, false, OS_WORD },
1.44 + /* r/m == 111 */ { true, false, OS_WORD },
1.45 +// mod == 11
1.46 + /* r/m == 000 */ { false, false, OS_ZERO },
1.47 + /* r/m == 001 */ { false, false, OS_ZERO },
1.48 + /* r/m == 010 */ { false, false, OS_ZERO },
1.49 + /* r/m == 011 */ { false, false, OS_ZERO },
1.50 + /* r/m == 100 */ { false, false, OS_ZERO },
1.51 + /* r/m == 101 */ { false, false, OS_ZERO },
1.52 + /* r/m == 110 */ { false, false, OS_ZERO },
1.53 + /* r/m == 111 */ { false, false, OS_ZERO }
1.54 +};
1.55 +
1.56 +const ModrmEntry MiniDisassembler::s_ia32_modrm_map_[] = {
1.57 +// mod == 00
1.58 + /* r/m == 000 */ { false, false, OS_ZERO },
1.59 + /* r/m == 001 */ { false, false, OS_ZERO },
1.60 + /* r/m == 010 */ { false, false, OS_ZERO },
1.61 + /* r/m == 011 */ { false, false, OS_ZERO },
1.62 + /* r/m == 100 */ { false, true, OS_ZERO },
1.63 + /* r/m == 101 */ { true, false, OS_DOUBLE_WORD },
1.64 + /* r/m == 110 */ { false, false, OS_ZERO },
1.65 + /* r/m == 111 */ { false, false, OS_ZERO },
1.66 +// mod == 01
1.67 + /* r/m == 000 */ { true, false, OS_BYTE },
1.68 + /* r/m == 001 */ { true, false, OS_BYTE },
1.69 + /* r/m == 010 */ { true, false, OS_BYTE },
1.70 + /* r/m == 011 */ { true, false, OS_BYTE },
1.71 + /* r/m == 100 */ { true, true, OS_BYTE },
1.72 + /* r/m == 101 */ { true, false, OS_BYTE },
1.73 + /* r/m == 110 */ { true, false, OS_BYTE },
1.74 + /* r/m == 111 */ { true, false, OS_BYTE },
1.75 +// mod == 10
1.76 + /* r/m == 000 */ { true, false, OS_DOUBLE_WORD },
1.77 + /* r/m == 001 */ { true, false, OS_DOUBLE_WORD },
1.78 + /* r/m == 010 */ { true, false, OS_DOUBLE_WORD },
1.79 + /* r/m == 011 */ { true, false, OS_DOUBLE_WORD },
1.80 + /* r/m == 100 */ { true, true, OS_DOUBLE_WORD },
1.81 + /* r/m == 101 */ { true, false, OS_DOUBLE_WORD },
1.82 + /* r/m == 110 */ { true, false, OS_DOUBLE_WORD },
1.83 + /* r/m == 111 */ { true, false, OS_DOUBLE_WORD },
1.84 +// mod == 11
1.85 + /* r/m == 000 */ { false, false, OS_ZERO },
1.86 + /* r/m == 001 */ { false, false, OS_ZERO },
1.87 + /* r/m == 010 */ { false, false, OS_ZERO },
1.88 + /* r/m == 011 */ { false, false, OS_ZERO },
1.89 + /* r/m == 100 */ { false, false, OS_ZERO },
1.90 + /* r/m == 101 */ { false, false, OS_ZERO },
1.91 + /* r/m == 110 */ { false, false, OS_ZERO },
1.92 + /* r/m == 111 */ { false, false, OS_ZERO },
1.93 +};
1.94 +
1.95 +}; // namespace sidestep
