mirror of
https://github.com/narzoul/DDrawCompat
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narzoul
parent
291e50acf3
commit
89b2a63164
656
DDrawCompat/Common/Disasm.cpp
Normal file
656
DDrawCompat/Common/Disasm.cpp
Normal file
@ -0,0 +1,656 @@
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#include <Common/Disasm.h>
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namespace
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{
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enum OpcodeFlags
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{
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OF_NONE = 0,
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OF_PREFIX = 1 << 0,
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OF_PREFIX_OS = 1 << 1,
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OF_PREFIX_AS = 1 << 2,
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OF_ESCAPE = 1 << 3,
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OF_MODRM = 1 << 4,
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OF_AS = 1 << 5,
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OF_IB = 1 << 6,
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OF_IW = 1 << 7,
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OF_IW_ID = 1 << 8,
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OF_ICOND = 1 << 9,
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OF_CB = 1 << 10,
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OF_CW_CD = 1 << 11,
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OF_CD_CP = 1 << 12,
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OF_INVALID = 1 << 13
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};
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const unsigned g_opcodeFlags[256] = {
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OF_MODRM, // 00 /r
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OF_MODRM, // 01 /r
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OF_MODRM, // 02 /r
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OF_MODRM, // 03 /r
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OF_IB, // 04 ib
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OF_IW_ID, // 05 iw/id
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OF_NONE, // 06
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OF_NONE, // 07
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OF_MODRM, // 08 /r
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OF_MODRM, // 09 /r
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OF_MODRM, // 0A /r
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OF_MODRM, // 0B /r
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OF_IB, // 0C ib
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OF_IW_ID, // 0D iw/id
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OF_NONE, // 0E
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OF_ESCAPE, // 0F
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OF_MODRM, // 10 /r
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OF_MODRM, // 11 /r
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OF_MODRM, // 12 /r
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OF_MODRM, // 13 /r
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OF_IB, // 14 ib
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OF_IW_ID, // 15 iw/id
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OF_NONE, // 16
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OF_NONE, // 17
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OF_MODRM, // 18 /r
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OF_MODRM, // 19 /r
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OF_MODRM, // 1A /r
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OF_MODRM, // 1B /r
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OF_IB, // 1C ib
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OF_IW_ID, // 1D iw/id
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OF_NONE, // 1E
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OF_NONE, // 1F
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OF_MODRM, // 20 /r
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OF_MODRM, // 21 /r
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OF_MODRM, // 22 /r
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OF_MODRM, // 23 /r
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OF_IB, // 24 ib
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OF_IW_ID, // 25 iw/id
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OF_PREFIX, // 26
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OF_NONE, // 27
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OF_MODRM, // 28 /r
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OF_MODRM, // 29 /r
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OF_MODRM, // 2A /r
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OF_MODRM, // 2B /r
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OF_IB, // 2C ib
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OF_IW_ID, // 2D iw/id
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OF_PREFIX, // 2E
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OF_NONE, // 2F
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OF_MODRM, // 30 /r
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OF_MODRM, // 31 /r
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OF_MODRM, // 32 /r
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OF_MODRM, // 33 /r
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OF_IB, // 34 ib
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OF_IW_ID, // 35 iw/id
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OF_PREFIX, // 36
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OF_NONE, // 37
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OF_MODRM, // 38 /r
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OF_MODRM, // 39 /r
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OF_MODRM, // 3A /r
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OF_MODRM, // 3B /r
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OF_IB, // 3C ib
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OF_IW_ID, // 3D iw/id
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OF_PREFIX, // 3E
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OF_NONE, // 3F
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OF_NONE, // 40 (40+rw/rd)
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OF_NONE, // 41 (40+rw/rd)
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OF_NONE, // 42 (40+rw/rd)
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OF_NONE, // 43 (40+rw/rd)
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OF_NONE, // 44 (40+rw/rd)
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OF_NONE, // 45 (40+rw/rd)
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OF_NONE, // 46 (40+rw/rd)
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OF_NONE, // 47 (40+rw/rd)
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OF_NONE, // 48 (48+rw/rd)
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OF_NONE, // 49 (48+rw/rd)
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OF_NONE, // 4A (48+rw/rd)
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OF_NONE, // 4B (48+rw/rd)
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OF_NONE, // 4C (48+rw/rd)
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OF_NONE, // 4D (48+rw/rd)
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OF_NONE, // 4E (48+rw/rd)
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OF_NONE, // 4F (48+rw/rd)
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OF_NONE, // 50 (50+rw/rd)
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OF_NONE, // 51 (50+rw/rd)
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OF_NONE, // 52 (50+rw/rd)
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OF_NONE, // 53 (50+rw/rd)
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OF_NONE, // 54 (50+rw/rd)
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OF_NONE, // 55 (50+rw/rd)
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OF_NONE, // 56 (50+rw/rd)
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OF_NONE, // 57 (50+rw/rd)
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OF_NONE, // 58 (58+rw/rd)
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OF_NONE, // 59 (58+rw/rd)
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OF_NONE, // 5A (58+rw/rd)
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OF_NONE, // 5B (58+rw/rd)
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OF_NONE, // 5C (58+rw/rd)
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OF_NONE, // 5D (58+rw/rd)
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OF_NONE, // 5E (58+rw/rd)
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OF_NONE, // 5F (58+rw/rd)
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OF_NONE, // 60
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OF_NONE, // 61
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OF_MODRM, // 62 /r
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OF_MODRM, // 63 /r
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OF_PREFIX, // 64
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OF_PREFIX, // 65
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OF_PREFIX | OF_PREFIX_OS, // 66
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OF_PREFIX | OF_PREFIX_AS, // 67
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OF_IW_ID, // 68 iw/id
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OF_MODRM | OF_IW_ID, // 69 /r iw/id
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OF_IB, // 6A ib
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OF_MODRM | OF_IB, // 6B /r ib
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OF_NONE, // 6C
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OF_NONE, // 6D
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OF_NONE, // 6E
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OF_NONE, // 6F
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OF_CB, // 70 cb
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OF_CB, // 71 cb
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OF_CB, // 72 cb
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OF_CB, // 73 cb
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OF_CB, // 74 cb
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OF_CB, // 75 cb
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OF_CB, // 76 cb
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OF_CB, // 77 cb
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OF_CB, // 78 cb
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OF_CB, // 79 cb
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OF_CB, // 7A cb
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OF_CB, // 7B cb
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OF_CB, // 7C cb
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OF_CB, // 7D cb
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OF_CB, // 7E cb
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OF_CB, // 7F cb
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OF_MODRM | OF_IB, // 80 /r ib
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OF_MODRM | OF_IW_ID, // 81 /r iw/id
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OF_MODRM | OF_IB, // 82 /r ib
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OF_MODRM | OF_IB, // 83 /r ib
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OF_MODRM, // 84 /r
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OF_MODRM, // 85 /r
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OF_MODRM, // 86 /r
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OF_MODRM, // 87 /r
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OF_MODRM, // 88 /r
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OF_MODRM, // 89 /r
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OF_MODRM, // 8A /r
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OF_MODRM, // 8B /r
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OF_MODRM, // 8C /r
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OF_MODRM, // 8D /r
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OF_MODRM, // 8E /r
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OF_MODRM, // 8F /r
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OF_NONE, // 90
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OF_NONE, // 91 (90+rw/rd)
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OF_NONE, // 92 (90+rw/rd)
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OF_NONE, // 93 (90+rw/rd)
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OF_NONE, // 94 (90+rw/rd)
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OF_NONE, // 95 (90+rw/rd)
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OF_NONE, // 96 (90+rw/rd)
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OF_NONE, // 97 (90+rw/rd)
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OF_NONE, // 98
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OF_NONE, // 99
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OF_CD_CP, // 9A cd/cp
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OF_NONE, // 9B
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OF_NONE, // 9C
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OF_NONE, // 9D
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OF_NONE, // 9E
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OF_NONE, // 9F
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OF_IW_ID | OF_AS, // A0 iw/id (AS)
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OF_IW_ID | OF_AS, // A1 iw/id (AS)
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OF_IW_ID | OF_AS, // A2 iw/id (AS)
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OF_IW_ID | OF_AS, // A3 iw/id (AS)
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OF_NONE, // A4
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OF_NONE, // A5
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OF_NONE, // A6
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OF_NONE, // A7
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OF_IB, // A8 ib
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OF_IW_ID, // A9 iw/id
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OF_NONE, // AA
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OF_NONE, // AB
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OF_NONE, // AC
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OF_NONE, // AD
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OF_NONE, // AE
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OF_NONE, // AF
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OF_IB, // B0 (B0+rb) ib
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OF_IB, // B1 (B0+rb) ib
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OF_IB, // B2 (B0+rb) ib
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OF_IB, // B3 (B0+rb) ib
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OF_IB, // B4 (B0+rb) ib
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OF_IB, // B5 (B0+rb) ib
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OF_IB, // B6 (B0+rb) ib
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OF_IB, // B7 (B0+rb) ib
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OF_IW_ID, // B8 (B8+rw/rd) iw/id
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OF_IW_ID, // B9 (B8+rw/rd) iw/id
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OF_IW_ID, // BA (B8+rw/rd) iw/id
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OF_IW_ID, // BB (B8+rw/rd) iw/id
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OF_IW_ID, // BC (B8+rw/rd) iw/id
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OF_IW_ID, // BD (B8+rw/rd) iw/id
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OF_IW_ID, // BE (B8+rw/rd) iw/id
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OF_IW_ID, // BF (B8+rw/rd) iw/id
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OF_MODRM | OF_IB, // C0 /r ib
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OF_MODRM | OF_IB, // C1 /r ib
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OF_IW, // C2 iw
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OF_NONE, // C3
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OF_MODRM, // C4 /r
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OF_MODRM, // C5 /r
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OF_MODRM | OF_IB, // C6 /r ib
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OF_MODRM | OF_IW_ID, // C7 /r iw/id
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OF_IW | OF_IB, // C8 iw ib
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OF_NONE, // C9
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OF_IW, // CA iw
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OF_NONE, // CB
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OF_NONE, // CC
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OF_IB, // CD ib
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OF_NONE, // CE
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OF_NONE, // CF
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OF_MODRM, // D0 /r
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OF_MODRM, // D1 /r
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OF_MODRM, // D2 /r
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OF_MODRM, // D3 /r
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OF_IB, // D4 ib
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OF_IB, // D5 ib
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OF_INVALID, // D6 ?
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OF_NONE, // D7
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OF_MODRM, // D8 /r
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OF_MODRM, // D9 /r
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OF_MODRM, // DA /r
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OF_MODRM, // DB /r
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OF_MODRM, // DC /r
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OF_MODRM, // DD /r
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OF_MODRM, // DE /r
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OF_MODRM, // DF /r
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OF_CB, // E0 cb
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OF_CB, // E1 cb
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OF_CB, // E2 cb
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OF_CB, // E3 cb
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OF_IB, // E4 ib
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OF_IB, // E5 ib
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OF_IB, // E6 ib
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OF_IB, // E7 ib
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OF_CW_CD, // E8 cw/cd
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OF_CW_CD, // E9 cw/cd
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OF_CD_CP, // EA cd/cp
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OF_CB, // EB cb
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OF_NONE, // EC
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OF_NONE, // ED
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OF_NONE, // EE
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OF_NONE, // EF
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OF_PREFIX, // F0
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OF_NONE, // F1
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OF_PREFIX, // F2
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OF_PREFIX, // F3
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OF_NONE, // F4
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OF_NONE, // F5
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OF_MODRM | OF_IB | OF_ICOND, // F6 /r (ib)
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OF_MODRM | OF_IW_ID | OF_ICOND, // F7 /r (iw/id)
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OF_NONE, // F8
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OF_NONE, // F9
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OF_NONE, // FA
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OF_NONE, // FB
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OF_NONE, // FC
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OF_NONE, // FD
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OF_MODRM, // FE /r
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OF_MODRM, // FF /r
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};
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const unsigned g_opcodeFlags0F[256] = {
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OF_MODRM, // 0F 00 /r
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OF_MODRM, // 0F 01 /r
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OF_MODRM, // 0F 02 /r
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OF_MODRM, // 0F 03 /r
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OF_INVALID, // 0F 04 ?
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OF_NONE, // 0F 05
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OF_NONE, // 0F 06
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OF_NONE, // 0F 07
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OF_NONE, // 0F 08
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OF_NONE, // 0F 09
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OF_INVALID, // 0F 0A ?
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OF_NONE, // 0F 0B
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OF_INVALID, // 0F 0C ?
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OF_MODRM, // 0F 0D /r
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OF_INVALID, // 0F 0E ?
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OF_INVALID, // 0F 0F ?
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OF_MODRM, // 0F 10 /r
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OF_MODRM, // 0F 11 /r
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OF_MODRM, // 0F 12 /r
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OF_MODRM, // 0F 13 /r
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OF_MODRM, // 0F 14 /r
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OF_MODRM, // 0F 15 /r
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OF_MODRM, // 0F 16 /r
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OF_MODRM, // 0F 17 /r
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OF_MODRM, // 0F 18 /r
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OF_INVALID, // 0F 19 ?
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OF_MODRM, // 0F 1A /r
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OF_MODRM, // 0F 1B /r
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OF_MODRM, // 0F 1C /r
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OF_INVALID, // 0F 1D ?
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OF_MODRM, // 0F 1E /r
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OF_MODRM, // 0F 1F /r
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OF_MODRM, // 0F 20 /r
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OF_MODRM, // 0F 21 /r
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OF_MODRM, // 0F 22 /r
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OF_MODRM, // 0F 23 /r
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OF_INVALID, // 0F 24 ?
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OF_INVALID, // 0F 25 ?
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OF_INVALID, // 0F 26 ?
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OF_INVALID, // 0F 27 ?
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OF_MODRM, // 0F 28 /r
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OF_MODRM, // 0F 29 /r
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OF_MODRM, // 0F 2A /r
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OF_MODRM, // 0F 2B /r
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OF_MODRM, // 0F 2C /r
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OF_MODRM, // 0F 2D /r
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OF_MODRM, // 0F 2E /r
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OF_MODRM, // 0F 2F /r
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OF_NONE, // 0F 30
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OF_NONE, // 0F 31
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OF_NONE, // 0F 32
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OF_NONE, // 0F 33
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OF_NONE, // 0F 34
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OF_NONE, // 0F 35
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OF_INVALID, // 0F 36 ?
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OF_NONE, // 0F 37
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OF_ESCAPE | OF_MODRM, // 0F 38 xx /r
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OF_INVALID, // 0F 39 ?
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OF_ESCAPE | OF_MODRM | OF_IB, // 0F 3A xx /r ib
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OF_INVALID, // 0F 3B ?
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OF_INVALID, // 0F 3C ?
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OF_INVALID, // 0F 3D ?
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OF_INVALID, // 0F 3E ?
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OF_INVALID, // 0F 3F ?
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OF_MODRM, // 0F 40 /r
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OF_MODRM, // 0F 41 /r
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OF_MODRM, // 0F 42 /r
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OF_MODRM, // 0F 43 /r
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OF_MODRM, // 0F 44 /r
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OF_MODRM, // 0F 45 /r
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OF_MODRM, // 0F 46 /r
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OF_MODRM, // 0F 47 /r
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OF_MODRM, // 0F 48 /r
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OF_MODRM, // 0F 49 /r
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OF_MODRM, // 0F 4A /r
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OF_MODRM, // 0F 4B /r
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OF_MODRM, // 0F 4C /r
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OF_MODRM, // 0F 4D /r
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OF_MODRM, // 0F 4E /r
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OF_MODRM, // 0F 4F /r
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OF_MODRM, // 0F 50 /r
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OF_MODRM, // 0F 51 /r
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OF_MODRM, // 0F 52 /r
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OF_MODRM, // 0F 53 /r
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OF_MODRM, // 0F 54 /r
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OF_MODRM, // 0F 55 /r
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OF_MODRM, // 0F 56 /r
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OF_MODRM, // 0F 57 /r
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OF_MODRM, // 0F 58 /r
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OF_MODRM, // 0F 59 /r
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OF_MODRM, // 0F 5A /r
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OF_MODRM, // 0F 5B /r
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OF_MODRM, // 0F 5C /r
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OF_MODRM, // 0F 5D /r
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OF_MODRM, // 0F 5E /r
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OF_MODRM, // 0F 5F /r
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OF_MODRM, // 0F 60 /r
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OF_MODRM, // 0F 61 /r
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OF_MODRM, // 0F 62 /r
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OF_MODRM, // 0F 63 /r
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OF_MODRM, // 0F 64 /r
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OF_MODRM, // 0F 65 /r
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OF_MODRM, // 0F 66 /r
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OF_MODRM, // 0F 67 /r
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OF_MODRM, // 0F 68 /r
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OF_MODRM, // 0F 69 /r
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OF_MODRM, // 0F 6A /r
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OF_MODRM, // 0F 6B /r
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OF_MODRM, // 0F 6C /r
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OF_MODRM, // 0F 6D /r
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OF_MODRM, // 0F 6E /r
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OF_MODRM, // 0F 6F /r
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OF_MODRM | OF_IB, // 0F 70 /r ib
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OF_MODRM | OF_IB, // 0F 71 /r ib
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OF_MODRM | OF_IB, // 0F 72 /r ib
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OF_MODRM | OF_IB, // 0F 73 /r ib
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OF_MODRM, // 0F 74 /r
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OF_MODRM, // 0F 75 /r
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OF_MODRM, // 0F 76 /r
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OF_NONE, // 0F 77
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OF_INVALID, // 0F 78 ?
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OF_INVALID, // 0F 79 ?
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OF_INVALID, // 0F 7A ?
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OF_INVALID, // 0F 7B ?
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OF_MODRM, // 0F 7C /r
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OF_MODRM, // 0F 7D /r
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OF_MODRM, // 0F 7E /r
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OF_MODRM, // 0F 7F /r
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OF_CW_CD, // 0F 80 cw/cd
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OF_CW_CD, // 0F 81 cw/cd
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OF_CW_CD, // 0F 82 cw/cd
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OF_CW_CD, // 0F 83 cw/cd
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OF_CW_CD, // 0F 84 cw/cd
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OF_CW_CD, // 0F 85 cw/cd
|
||||
OF_CW_CD, // 0F 86 cw/cd
|
||||
OF_CW_CD, // 0F 87 cw/cd
|
||||
OF_CW_CD, // 0F 88 cw/cd
|
||||
OF_CW_CD, // 0F 89 cw/cd
|
||||
OF_CW_CD, // 0F 8A cw/cd
|
||||
OF_CW_CD, // 0F 8B cw/cd
|
||||
OF_CW_CD, // 0F 8C cw/cd
|
||||
OF_CW_CD, // 0F 8D cw/cd
|
||||
OF_CW_CD, // 0F 8E cw/cd
|
||||
OF_CW_CD, // 0F 8F cw/cd
|
||||
OF_MODRM, // 0F 90 /r
|
||||
OF_MODRM, // 0F 91 /r
|
||||
OF_MODRM, // 0F 92 /r
|
||||
OF_MODRM, // 0F 93 /r
|
||||
OF_MODRM, // 0F 94 /r
|
||||
OF_MODRM, // 0F 95 /r
|
||||
OF_MODRM, // 0F 96 /r
|
||||
OF_MODRM, // 0F 97 /r
|
||||
OF_MODRM, // 0F 98 /r
|
||||
OF_MODRM, // 0F 99 /r
|
||||
OF_MODRM, // 0F 9A /r
|
||||
OF_MODRM, // 0F 9B /r
|
||||
OF_MODRM, // 0F 9C /r
|
||||
OF_MODRM, // 0F 9D /r
|
||||
OF_MODRM, // 0F 9E /r
|
||||
OF_MODRM, // 0F 9F /r
|
||||
OF_NONE, // 0F A0
|
||||
OF_NONE, // 0F A1
|
||||
OF_NONE, // 0F A2
|
||||
OF_MODRM, // 0F A3 /r
|
||||
OF_MODRM | OF_IB, // 0F A4 /r ib
|
||||
OF_MODRM, // 0F A5 /r
|
||||
OF_INVALID, // 0F A6 ?
|
||||
OF_INVALID, // 0F A7 ?
|
||||
OF_NONE, // 0F A8
|
||||
OF_NONE, // 0F A9
|
||||
OF_NONE, // 0F AA
|
||||
OF_MODRM, // 0F AB /r
|
||||
OF_MODRM | OF_IB, // 0F AC /r ib
|
||||
OF_MODRM, // 0F AD /r
|
||||
OF_MODRM, // 0F AE /r
|
||||
OF_MODRM, // 0F AF /r
|
||||
OF_MODRM, // 0F B0 /r
|
||||
OF_MODRM, // 0F B1 /r
|
||||
OF_MODRM, // 0F B2 /r
|
||||
OF_MODRM, // 0F B3 /r
|
||||
OF_MODRM, // 0F B4 /r
|
||||
OF_MODRM, // 0F B5 /r
|
||||
OF_MODRM, // 0F B6 /r
|
||||
OF_MODRM, // 0F B7 /r
|
||||
OF_MODRM, // 0F B8 /r
|
||||
OF_MODRM, // 0F B9 /r
|
||||
OF_MODRM | OF_IB, // 0F BA /r ib
|
||||
OF_MODRM, // 0F BB /r
|
||||
OF_MODRM, // 0F BC /r
|
||||
OF_MODRM, // 0F BD /r
|
||||
OF_MODRM, // 0F BE /r
|
||||
OF_MODRM, // 0F BF /r
|
||||
OF_MODRM, // 0F C0 /r
|
||||
OF_MODRM, // 0F C1 /r
|
||||
OF_MODRM | OF_IB, // 0F C2 /r ib
|
||||
OF_MODRM, // 0F C3 /r
|
||||
OF_MODRM | OF_IB, // 0F C4 /r ib
|
||||
OF_MODRM | OF_IB, // 0F C5 /r ib
|
||||
OF_MODRM | OF_IB, // 0F C6 /r ib
|
||||
OF_MODRM, // 0F C7 /r
|
||||
OF_NONE, // 0F C8 (C8+rd)
|
||||
OF_NONE, // 0F C9 (C8+rd)
|
||||
OF_NONE, // 0F CA (C8+rd)
|
||||
OF_NONE, // 0F C8 (C8+rd)
|
||||
OF_NONE, // 0F CC (C8+rd)
|
||||
OF_NONE, // 0F CD (C8+rd)
|
||||
OF_NONE, // 0F CE (C8+rd)
|
||||
OF_NONE, // 0F CF (C8+rd)
|
||||
OF_MODRM, // 0F D0 /r
|
||||
OF_MODRM, // 0F D1 /r
|
||||
OF_MODRM, // 0F D2 /r
|
||||
OF_MODRM, // 0F D3 /r
|
||||
OF_MODRM, // 0F D4 /r
|
||||
OF_MODRM, // 0F D5 /r
|
||||
OF_MODRM, // 0F D6 /r
|
||||
OF_MODRM, // 0F D7 /r
|
||||
OF_MODRM, // 0F D8 /r
|
||||
OF_MODRM, // 0F D9 /r
|
||||
OF_MODRM, // 0F DA /r
|
||||
OF_MODRM, // 0F DB /r
|
||||
OF_MODRM, // 0F DC /r
|
||||
OF_MODRM, // 0F DD /r
|
||||
OF_MODRM, // 0F DE /r
|
||||
OF_MODRM, // 0F DF /r
|
||||
OF_MODRM, // 0F E0 /r
|
||||
OF_MODRM, // 0F E1 /r
|
||||
OF_MODRM, // 0F E2 /r
|
||||
OF_MODRM, // 0F E3 /r
|
||||
OF_MODRM, // 0F E4 /r
|
||||
OF_MODRM, // 0F E5 /r
|
||||
OF_MODRM, // 0F E6 /r
|
||||
OF_MODRM, // 0F E7 /r
|
||||
OF_MODRM, // 0F E8 /r
|
||||
OF_MODRM, // 0F E9 /r
|
||||
OF_MODRM, // 0F EA /r
|
||||
OF_MODRM, // 0F EB /r
|
||||
OF_MODRM, // 0F EC /r
|
||||
OF_MODRM, // 0F ED /r
|
||||
OF_MODRM, // 0F EE /r
|
||||
OF_MODRM, // 0F EF /r
|
||||
OF_MODRM, // 0F F0 /r
|
||||
OF_MODRM, // 0F F1 /r
|
||||
OF_MODRM, // 0F F2 /r
|
||||
OF_MODRM, // 0F F3 /r
|
||||
OF_MODRM, // 0F F4 /r
|
||||
OF_MODRM, // 0F F5 /r
|
||||
OF_MODRM, // 0F F6 /r
|
||||
OF_MODRM, // 0F F7 /r
|
||||
OF_MODRM, // 0F F8 /r
|
||||
OF_MODRM, // 0F F9 /r
|
||||
OF_MODRM, // 0F FA /r
|
||||
OF_MODRM, // 0F FB /r
|
||||
OF_MODRM, // 0F FC /r
|
||||
OF_MODRM, // 0F FD /r
|
||||
OF_MODRM, // 0F FE /r
|
||||
OF_MODRM // 0F FF /r
|
||||
};
|
||||
}
|
||||
|
||||
namespace Compat
|
||||
{
|
||||
unsigned getInstructionLength(const void* instruction)
|
||||
{
|
||||
auto instr = static_cast<const unsigned char*>(instruction);
|
||||
unsigned prefixFlags = 0;
|
||||
unsigned opcodeFlags = g_opcodeFlags[instr[0]];
|
||||
unsigned length = 1;
|
||||
|
||||
while (opcodeFlags & OF_PREFIX)
|
||||
{
|
||||
prefixFlags |= opcodeFlags & (OF_PREFIX_AS | OF_PREFIX_OS);
|
||||
opcodeFlags = g_opcodeFlags[instr[length]];
|
||||
++length;
|
||||
}
|
||||
|
||||
if (opcodeFlags & OF_ESCAPE)
|
||||
{
|
||||
opcodeFlags = g_opcodeFlags0F[instr[length]];
|
||||
++length;
|
||||
if (opcodeFlags & OF_ESCAPE)
|
||||
{
|
||||
++length;
|
||||
}
|
||||
}
|
||||
|
||||
if (0 == opcodeFlags)
|
||||
{
|
||||
return length;
|
||||
}
|
||||
|
||||
if (opcodeFlags & OF_INVALID)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (opcodeFlags & OF_MODRM)
|
||||
{
|
||||
const unsigned char modrm = instr[length];
|
||||
++length;
|
||||
|
||||
if ((opcodeFlags & OF_ICOND) && 0 != ((modrm >> 3) & 7))
|
||||
{
|
||||
opcodeFlags &= ~(OF_IB | OF_IW_ID);
|
||||
}
|
||||
|
||||
const unsigned char mod = modrm >> 6;
|
||||
const unsigned char rm = modrm & 7;
|
||||
if (1 == mod)
|
||||
{
|
||||
++length; // disp8
|
||||
}
|
||||
else if (2 == mod)
|
||||
{
|
||||
length += (prefixFlags & OF_PREFIX_AS) ? 2 : 4; // disp16/32
|
||||
}
|
||||
else if (0 == mod)
|
||||
{
|
||||
if (prefixFlags & OF_PREFIX_AS)
|
||||
{
|
||||
if (6 == rm)
|
||||
{
|
||||
length += 2; // disp16
|
||||
}
|
||||
}
|
||||
else if (4 == rm && 5 == (instr[length] & 7) ||
|
||||
5 == rm)
|
||||
{
|
||||
length += 4; // disp32
|
||||
}
|
||||
}
|
||||
|
||||
if (4 == rm && 3 != mod && !(prefixFlags & OF_PREFIX_AS))
|
||||
{
|
||||
++length; // SIB
|
||||
}
|
||||
}
|
||||
|
||||
if (opcodeFlags & OF_IB)
|
||||
{
|
||||
++length; // ib
|
||||
}
|
||||
if (opcodeFlags & OF_IW)
|
||||
{
|
||||
length += 2; // iw
|
||||
}
|
||||
if (opcodeFlags & OF_IW_ID)
|
||||
{
|
||||
if (opcodeFlags & OF_AS)
|
||||
{
|
||||
length += (prefixFlags & OF_PREFIX_AS) ? 2 : 4; // iw/id
|
||||
}
|
||||
else
|
||||
{
|
||||
length += (prefixFlags & OF_PREFIX_OS) ? 2 : 4; // iw/id
|
||||
}
|
||||
}
|
||||
|
||||
if (opcodeFlags & OF_CB)
|
||||
{
|
||||
++length; // cb
|
||||
}
|
||||
else if (opcodeFlags & OF_CW_CD)
|
||||
{
|
||||
length += (prefixFlags & OF_PREFIX_OS) ? 2 : 4; // cw/cd
|
||||
}
|
||||
else if (opcodeFlags & OF_CD_CP)
|
||||
{
|
||||
length += (prefixFlags & OF_PREFIX_OS) ? 4 : 6; // cd/cp
|
||||
}
|
||||
|
||||
return length;
|
||||
}
|
||||
}
|
||||
6
DDrawCompat/Common/Disasm.h
Normal file
6
DDrawCompat/Common/Disasm.h
Normal file
@ -0,0 +1,6 @@
|
||||
#pragma once
|
||||
|
||||
namespace Compat
|
||||
{
|
||||
unsigned getInstructionLength(const void* instruction);
|
||||
}
|
||||
@ -5,9 +5,8 @@
|
||||
#include <string>
|
||||
|
||||
#include <Windows.h>
|
||||
#include <initguid.h>
|
||||
#include <DbgEng.h>
|
||||
|
||||
#include <Common/Disasm.h>
|
||||
#include <Common/Hook.h>
|
||||
#include <Common/Log.h>
|
||||
#include <Common/Path.h>
|
||||
@ -15,35 +14,7 @@
|
||||
|
||||
namespace
|
||||
{
|
||||
IDebugClient4* g_debugClient = nullptr;
|
||||
IDebugControl* g_debugControl = nullptr;
|
||||
IDebugSymbols* g_debugSymbols = nullptr;
|
||||
IDebugDataSpaces4* g_debugDataSpaces = nullptr;
|
||||
ULONG64 g_debugBase = 0;
|
||||
bool g_isDbgEngInitialized = false;
|
||||
|
||||
LONG WINAPI dbgEngWinVerifyTrust(HWND hwnd, GUID* pgActionID, LPVOID pWVTData);
|
||||
PIMAGE_NT_HEADERS getImageNtHeaders(HMODULE module);
|
||||
bool initDbgEng();
|
||||
|
||||
FARPROC WINAPI dbgEngGetProcAddress(HMODULE hModule, LPCSTR lpProcName)
|
||||
{
|
||||
LOG_FUNC("dbgEngGetProcAddress", hModule, lpProcName);
|
||||
if (0 == strcmp(lpProcName, "WinVerifyTrust"))
|
||||
{
|
||||
return LOG_RESULT(reinterpret_cast<FARPROC>(&dbgEngWinVerifyTrust));
|
||||
}
|
||||
return LOG_RESULT(GetProcAddress(hModule, lpProcName));
|
||||
}
|
||||
|
||||
LONG WINAPI dbgEngWinVerifyTrust(
|
||||
[[maybe_unused]] HWND hwnd,
|
||||
[[maybe_unused]] GUID* pgActionID,
|
||||
[[maybe_unused]] LPVOID pWVTData)
|
||||
{
|
||||
LOG_FUNC("dbgEngWinVerifyTrust", hwnd, pgActionID, pWVTData);
|
||||
return LOG_RESULT(0);
|
||||
}
|
||||
|
||||
FARPROC* findProcAddressInIat(HMODULE module, const char* procName)
|
||||
{
|
||||
@ -159,11 +130,6 @@ namespace
|
||||
return;
|
||||
}
|
||||
|
||||
if (!initDbgEng())
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
const DWORD trampolineSize = 32;
|
||||
BYTE* trampoline = static_cast<BYTE*>(
|
||||
VirtualAlloc(nullptr, trampolineSize, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE));
|
||||
@ -171,7 +137,7 @@ namespace
|
||||
BYTE* dst = trampoline;
|
||||
while (src - targetFunc < 5)
|
||||
{
|
||||
unsigned instructionSize = Compat::getInstructionSize(src);
|
||||
unsigned instructionSize = Compat::getInstructionLength(src);
|
||||
if (0 == instructionSize)
|
||||
{
|
||||
return;
|
||||
@ -208,114 +174,10 @@ namespace
|
||||
GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_PIN,
|
||||
reinterpret_cast<char*>(targetFunc), &module);
|
||||
}
|
||||
|
||||
bool initDbgEng()
|
||||
{
|
||||
if (g_isDbgEngInitialized)
|
||||
{
|
||||
return 0 != g_debugBase;
|
||||
}
|
||||
g_isDbgEngInitialized = true;
|
||||
|
||||
if (!GetModuleHandle("dbghelp.dll"))
|
||||
{
|
||||
LoadLibraryW((Compat::getSystemPath() / "dbghelp.dll").c_str());
|
||||
}
|
||||
|
||||
auto dbgEng = LoadLibraryW((Compat::getSystemPath() / "dbgeng.dll").c_str());
|
||||
if (!dbgEng)
|
||||
{
|
||||
LOG_INFO << "ERROR: DbgEng: failed to load library";
|
||||
return false;
|
||||
}
|
||||
|
||||
Compat::hookIatFunction(dbgEng, "GetProcAddress", dbgEngGetProcAddress);
|
||||
|
||||
auto debugCreate = reinterpret_cast<decltype(&DebugCreate)>(Compat::getProcAddress(dbgEng, "DebugCreate"));
|
||||
if (!debugCreate)
|
||||
{
|
||||
LOG_INFO << "ERROR: DbgEng: DebugCreate not found";
|
||||
return false;
|
||||
}
|
||||
|
||||
HRESULT result = S_OK;
|
||||
if (FAILED(result = debugCreate(IID_IDebugClient4, reinterpret_cast<void**>(&g_debugClient))) ||
|
||||
FAILED(result = g_debugClient->QueryInterface(IID_IDebugControl, reinterpret_cast<void**>(&g_debugControl))) ||
|
||||
FAILED(result = g_debugClient->QueryInterface(IID_IDebugSymbols, reinterpret_cast<void**>(&g_debugSymbols))) ||
|
||||
FAILED(result = g_debugClient->QueryInterface(IID_IDebugDataSpaces4, reinterpret_cast<void**>(&g_debugDataSpaces))))
|
||||
{
|
||||
LOG_INFO << "ERROR: DbgEng: object creation failed: " << Compat::hex(result);
|
||||
return false;
|
||||
}
|
||||
|
||||
result = g_debugClient->OpenDumpFileWide(Compat::getModulePath(Dll::g_currentModule).c_str(), 0);
|
||||
if (FAILED(result))
|
||||
{
|
||||
LOG_INFO << "ERROR: DbgEng: OpenDumpFile failed: " << Compat::hex(result);
|
||||
return false;
|
||||
}
|
||||
|
||||
g_debugControl->SetEngineOptions(DEBUG_ENGOPT_DISABLE_MODULE_SYMBOL_LOAD);
|
||||
result = g_debugControl->WaitForEvent(0, INFINITE);
|
||||
if (FAILED(result))
|
||||
{
|
||||
LOG_INFO << "ERROR: DbgEng: WaitForEvent failed: " << Compat::hex(result);
|
||||
return false;
|
||||
}
|
||||
|
||||
DEBUG_MODULE_PARAMETERS dmp = {};
|
||||
result = g_debugSymbols->GetModuleParameters(1, 0, 0, &dmp);
|
||||
if (FAILED(result))
|
||||
{
|
||||
LOG_INFO << "ERROR: DbgEng: GetModuleParameters failed: " << Compat::hex(result);
|
||||
return false;
|
||||
}
|
||||
|
||||
ULONG size = 0;
|
||||
result = g_debugDataSpaces->GetValidRegionVirtual(dmp.Base, dmp.Size, &g_debugBase, &size);
|
||||
if (FAILED(result) || 0 == g_debugBase)
|
||||
{
|
||||
LOG_INFO << "ERROR: DbgEng: GetValidRegionVirtual failed: " << Compat::hex(result);
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
namespace Compat
|
||||
{
|
||||
void closeDbgEng()
|
||||
{
|
||||
if (g_debugClient)
|
||||
{
|
||||
g_debugClient->EndSession(DEBUG_END_PASSIVE);
|
||||
}
|
||||
if (g_debugDataSpaces)
|
||||
{
|
||||
g_debugDataSpaces->Release();
|
||||
g_debugDataSpaces = nullptr;
|
||||
}
|
||||
if (g_debugSymbols)
|
||||
{
|
||||
g_debugSymbols->Release();
|
||||
g_debugSymbols = nullptr;
|
||||
}
|
||||
if (g_debugControl)
|
||||
{
|
||||
g_debugControl->Release();
|
||||
g_debugControl = nullptr;
|
||||
}
|
||||
if (g_debugClient)
|
||||
{
|
||||
g_debugClient->Release();
|
||||
g_debugClient = nullptr;
|
||||
}
|
||||
|
||||
g_debugBase = 0;
|
||||
g_isDbgEngInitialized = false;
|
||||
}
|
||||
|
||||
std::string funcPtrToStr(const void* funcPtr)
|
||||
{
|
||||
std::ostringstream oss;
|
||||
@ -332,28 +194,6 @@ namespace Compat
|
||||
return oss.str();
|
||||
}
|
||||
|
||||
unsigned getInstructionSize(void* instruction)
|
||||
{
|
||||
const unsigned MAX_INSTRUCTION_SIZE = 15;
|
||||
HRESULT result = g_debugDataSpaces->WriteVirtual(g_debugBase, instruction, MAX_INSTRUCTION_SIZE, nullptr);
|
||||
if (FAILED(result))
|
||||
{
|
||||
LOG_ONCE("ERROR: DbgEng: WriteVirtual failed: " << Compat::hex(result));
|
||||
return 0;
|
||||
}
|
||||
|
||||
ULONG64 endOffset = 0;
|
||||
result = g_debugControl->Disassemble(g_debugBase, 0, nullptr, 0, nullptr, &endOffset);
|
||||
if (FAILED(result))
|
||||
{
|
||||
LOG_ONCE("ERROR: DbgEng: Disassemble failed: " << Compat::hex(result) << " "
|
||||
<< Compat::hexDump(instruction, MAX_INSTRUCTION_SIZE));
|
||||
return 0;
|
||||
}
|
||||
|
||||
return static_cast<unsigned>(endOffset - g_debugBase);
|
||||
}
|
||||
|
||||
DWORD getModuleFileOffset(const void* address)
|
||||
{
|
||||
LOG_FUNC("getModuleFileOffset", address);
|
||||
|
||||
@ -13,9 +13,7 @@
|
||||
|
||||
namespace Compat
|
||||
{
|
||||
void closeDbgEng();
|
||||
std::string funcPtrToStr(const void* funcPtr);
|
||||
unsigned getInstructionSize(void* instruction);
|
||||
DWORD getModuleFileOffset(const void* address);
|
||||
HMODULE getModuleHandleFromAddress(const void* address);
|
||||
|
||||
|
||||
@ -331,7 +331,6 @@ namespace DDraw
|
||||
|
||||
g_origDDrawWindowProc = ddrawWndProc;
|
||||
Compat::hookFunction(reinterpret_cast<void*&>(g_origDDrawWindowProc), ddrawWindowProc, "ddrawWindowProc");
|
||||
Compat::closeDbgEng();
|
||||
}
|
||||
|
||||
void onCreate(GUID* guid, CompatRef<IDirectDraw7> dd)
|
||||
|
||||
@ -140,6 +140,7 @@
|
||||
<ClInclude Include="Common\CompatRef.h" />
|
||||
<ClInclude Include="Common\CompatVtable.h" />
|
||||
<ClInclude Include="Common\CompatWeakPtr.h" />
|
||||
<ClInclude Include="Common\Disasm.h" />
|
||||
<ClInclude Include="Common\HResultException.h" />
|
||||
<ClInclude Include="Common\Log.h" />
|
||||
<ClInclude Include="Common\Path.h" />
|
||||
@ -338,6 +339,7 @@
|
||||
<ClInclude Include="Win32\Winmm.h" />
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<ClCompile Include="Common\Disasm.cpp" />
|
||||
<ClCompile Include="Common\Log.cpp" />
|
||||
<ClCompile Include="Common\Hook.cpp" />
|
||||
<ClCompile Include="Common\Path.cpp" />
|
||||
|
||||
@ -714,6 +714,9 @@
|
||||
<ClInclude Include="Config\Settings\SurfacePatches.h">
|
||||
<Filter>Header Files\Config\Settings</Filter>
|
||||
</ClInclude>
|
||||
<ClInclude Include="Common\Disasm.h">
|
||||
<Filter>Header Files\Common</Filter>
|
||||
</ClInclude>
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<ClCompile Include="Gdi\Gdi.cpp">
|
||||
@ -1118,6 +1121,9 @@
|
||||
<ClCompile Include="Config\Settings\SurfacePatches.cpp">
|
||||
<Filter>Source Files\Config\Settings</Filter>
|
||||
</ClCompile>
|
||||
<ClCompile Include="Common\Disasm.cpp">
|
||||
<Filter>Source Files\Common</Filter>
|
||||
</ClCompile>
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<ResourceCompile Include="DDrawCompat.rc">
|
||||
|
||||
@ -140,7 +140,6 @@ namespace
|
||||
Direct3d::installHooks(dd, dd7);
|
||||
LOG_INFO << "Installing GDI hooks";
|
||||
Gdi::installHooks();
|
||||
Compat::closeDbgEng();
|
||||
LOG_INFO << "Finished installing hooks";
|
||||
}
|
||||
|
||||
@ -203,7 +202,7 @@ namespace
|
||||
<< Compat::hex(ExceptionInfo->ExceptionRecord->ExceptionCode);
|
||||
|
||||
const auto writeDump = reinterpret_cast<decltype(&MiniDumpWriteDump)>(
|
||||
GetProcAddress(GetModuleHandle("dbghelp"), "MiniDumpWriteDump"));
|
||||
GetProcAddress(LoadLibraryA("dbghelp"), "MiniDumpWriteDump"));
|
||||
|
||||
if (writeDump)
|
||||
{
|
||||
@ -348,7 +347,6 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
|
||||
Win32::Thread::installHooks();
|
||||
Win32::Version::installHooks();
|
||||
Win32::Winmm::installHooks();
|
||||
Compat::closeDbgEng();
|
||||
|
||||
CALL_ORIG_FUNC(timeBeginPeriod)(1);
|
||||
Win32::DpiAwareness::init();
|
||||
|
||||
@ -1,3 +1,4 @@
|
||||
#include <Common/Disasm.h>
|
||||
#include <Common/Hook.h>
|
||||
#include <Common/Log.h>
|
||||
#include <Common/Time.h>
|
||||
@ -157,7 +158,7 @@ namespace
|
||||
unsigned totalInstructionSize = 0;
|
||||
while (totalInstructionSize < 5)
|
||||
{
|
||||
unsigned instructionSize = Compat::getInstructionSize(instructions + totalInstructionSize);
|
||||
unsigned instructionSize = Compat::getInstructionLength(instructions + totalInstructionSize);
|
||||
if (0 == instructionSize)
|
||||
{
|
||||
return LOG_RESULT(nullptr);
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user