| 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 |