ce188d4d |
1 | /* Bra.c -- Converters for RISC code\r |
2 | 2010-04-16 : Igor Pavlov : Public domain */\r |
3 | \r |
4 | #include "Precomp.h"\r |
5 | \r |
6 | #include "Bra.h"\r |
7 | \r |
8 | SizeT ARM_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)\r |
9 | {\r |
10 | SizeT i;\r |
11 | if (size < 4)\r |
12 | return 0;\r |
13 | size -= 4;\r |
14 | ip += 8;\r |
15 | for (i = 0; i <= size; i += 4)\r |
16 | {\r |
17 | if (data[i + 3] == 0xEB)\r |
18 | {\r |
19 | UInt32 dest;\r |
20 | UInt32 src = ((UInt32)data[i + 2] << 16) | ((UInt32)data[i + 1] << 8) | (data[i + 0]);\r |
21 | src <<= 2;\r |
22 | if (encoding)\r |
23 | dest = ip + (UInt32)i + src;\r |
24 | else\r |
25 | dest = src - (ip + (UInt32)i);\r |
26 | dest >>= 2;\r |
27 | data[i + 2] = (Byte)(dest >> 16);\r |
28 | data[i + 1] = (Byte)(dest >> 8);\r |
29 | data[i + 0] = (Byte)dest;\r |
30 | }\r |
31 | }\r |
32 | return i;\r |
33 | }\r |
34 | \r |
35 | SizeT ARMT_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)\r |
36 | {\r |
37 | SizeT i;\r |
38 | if (size < 4)\r |
39 | return 0;\r |
40 | size -= 4;\r |
41 | ip += 4;\r |
42 | for (i = 0; i <= size; i += 2)\r |
43 | {\r |
44 | if ((data[i + 1] & 0xF8) == 0xF0 &&\r |
45 | (data[i + 3] & 0xF8) == 0xF8)\r |
46 | {\r |
47 | UInt32 dest;\r |
48 | UInt32 src =\r |
49 | (((UInt32)data[i + 1] & 0x7) << 19) |\r |
50 | ((UInt32)data[i + 0] << 11) |\r |
51 | (((UInt32)data[i + 3] & 0x7) << 8) |\r |
52 | (data[i + 2]);\r |
53 | \r |
54 | src <<= 1;\r |
55 | if (encoding)\r |
56 | dest = ip + (UInt32)i + src;\r |
57 | else\r |
58 | dest = src - (ip + (UInt32)i);\r |
59 | dest >>= 1;\r |
60 | \r |
61 | data[i + 1] = (Byte)(0xF0 | ((dest >> 19) & 0x7));\r |
62 | data[i + 0] = (Byte)(dest >> 11);\r |
63 | data[i + 3] = (Byte)(0xF8 | ((dest >> 8) & 0x7));\r |
64 | data[i + 2] = (Byte)dest;\r |
65 | i += 2;\r |
66 | }\r |
67 | }\r |
68 | return i;\r |
69 | }\r |
70 | \r |
71 | SizeT PPC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)\r |
72 | {\r |
73 | SizeT i;\r |
74 | if (size < 4)\r |
75 | return 0;\r |
76 | size -= 4;\r |
77 | for (i = 0; i <= size; i += 4)\r |
78 | {\r |
79 | if ((data[i] >> 2) == 0x12 && (data[i + 3] & 3) == 1)\r |
80 | {\r |
81 | UInt32 src = ((UInt32)(data[i + 0] & 3) << 24) |\r |
82 | ((UInt32)data[i + 1] << 16) |\r |
83 | ((UInt32)data[i + 2] << 8) |\r |
84 | ((UInt32)data[i + 3] & (~3));\r |
85 | \r |
86 | UInt32 dest;\r |
87 | if (encoding)\r |
88 | dest = ip + (UInt32)i + src;\r |
89 | else\r |
90 | dest = src - (ip + (UInt32)i);\r |
91 | data[i + 0] = (Byte)(0x48 | ((dest >> 24) & 0x3));\r |
92 | data[i + 1] = (Byte)(dest >> 16);\r |
93 | data[i + 2] = (Byte)(dest >> 8);\r |
94 | data[i + 3] &= 0x3;\r |
95 | data[i + 3] |= dest;\r |
96 | }\r |
97 | }\r |
98 | return i;\r |
99 | }\r |
100 | \r |
101 | SizeT SPARC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)\r |
102 | {\r |
103 | UInt32 i;\r |
104 | if (size < 4)\r |
105 | return 0;\r |
106 | size -= 4;\r |
107 | for (i = 0; i <= size; i += 4)\r |
108 | {\r |
109 | if ((data[i] == 0x40 && (data[i + 1] & 0xC0) == 0x00) ||\r |
110 | (data[i] == 0x7F && (data[i + 1] & 0xC0) == 0xC0))\r |
111 | {\r |
112 | UInt32 src =\r |
113 | ((UInt32)data[i + 0] << 24) |\r |
114 | ((UInt32)data[i + 1] << 16) |\r |
115 | ((UInt32)data[i + 2] << 8) |\r |
116 | ((UInt32)data[i + 3]);\r |
117 | UInt32 dest;\r |
118 | \r |
119 | src <<= 2;\r |
120 | if (encoding)\r |
121 | dest = ip + i + src;\r |
122 | else\r |
123 | dest = src - (ip + i);\r |
124 | dest >>= 2;\r |
125 | \r |
126 | dest = (((0 - ((dest >> 22) & 1)) << 22) & 0x3FFFFFFF) | (dest & 0x3FFFFF) | 0x40000000;\r |
127 | \r |
128 | data[i + 0] = (Byte)(dest >> 24);\r |
129 | data[i + 1] = (Byte)(dest >> 16);\r |
130 | data[i + 2] = (Byte)(dest >> 8);\r |
131 | data[i + 3] = (Byte)dest;\r |
132 | }\r |
133 | }\r |
134 | return i;\r |
135 | }\r |