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