| /* Bra.c -- Converters for RISC code |
| 2010-04-16 : Igor Pavlov : Public domain */ |
| |
| #include "Precomp.h" |
| |
| #include "Bra.h" |
| |
| SizeT ARM_Convert(Byte *data, SizeT size, UInt32 ip, int encoding) |
| { |
| SizeT i; |
| if (size < 4) |
| return 0; |
| size -= 4; |
| ip += 8; |
| for (i = 0; i <= size; i += 4) |
| { |
| if (data[i + 3] == 0xEB) |
| { |
| UInt32 dest; |
| UInt32 src = ((UInt32)data[i + 2] << 16) | ((UInt32)data[i + 1] << 8) | (data[i + 0]); |
| src <<= 2; |
| if (encoding) |
| dest = ip + (UInt32)i + src; |
| else |
| dest = src - (ip + (UInt32)i); |
| dest >>= 2; |
| data[i + 2] = (Byte)(dest >> 16); |
| data[i + 1] = (Byte)(dest >> 8); |
| data[i + 0] = (Byte)dest; |
| } |
| } |
| return i; |
| } |
| |
| SizeT ARMT_Convert(Byte *data, SizeT size, UInt32 ip, int encoding) |
| { |
| SizeT i; |
| if (size < 4) |
| return 0; |
| size -= 4; |
| ip += 4; |
| for (i = 0; i <= size; i += 2) |
| { |
| if ((data[i + 1] & 0xF8) == 0xF0 && |
| (data[i + 3] & 0xF8) == 0xF8) |
| { |
| UInt32 dest; |
| UInt32 src = |
| (((UInt32)data[i + 1] & 0x7) << 19) | |
| ((UInt32)data[i + 0] << 11) | |
| (((UInt32)data[i + 3] & 0x7) << 8) | |
| (data[i + 2]); |
| |
| src <<= 1; |
| if (encoding) |
| dest = ip + (UInt32)i + src; |
| else |
| dest = src - (ip + (UInt32)i); |
| dest >>= 1; |
| |
| data[i + 1] = (Byte)(0xF0 | ((dest >> 19) & 0x7)); |
| data[i + 0] = (Byte)(dest >> 11); |
| data[i + 3] = (Byte)(0xF8 | ((dest >> 8) & 0x7)); |
| data[i + 2] = (Byte)dest; |
| i += 2; |
| } |
| } |
| return i; |
| } |
| |
| SizeT PPC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding) |
| { |
| SizeT i; |
| if (size < 4) |
| return 0; |
| size -= 4; |
| for (i = 0; i <= size; i += 4) |
| { |
| if ((data[i] >> 2) == 0x12 && (data[i + 3] & 3) == 1) |
| { |
| UInt32 src = ((UInt32)(data[i + 0] & 3) << 24) | |
| ((UInt32)data[i + 1] << 16) | |
| ((UInt32)data[i + 2] << 8) | |
| ((UInt32)data[i + 3] & (~3)); |
| |
| UInt32 dest; |
| if (encoding) |
| dest = ip + (UInt32)i + src; |
| else |
| dest = src - (ip + (UInt32)i); |
| data[i + 0] = (Byte)(0x48 | ((dest >> 24) & 0x3)); |
| data[i + 1] = (Byte)(dest >> 16); |
| data[i + 2] = (Byte)(dest >> 8); |
| data[i + 3] &= 0x3; |
| data[i + 3] |= dest; |
| } |
| } |
| return i; |
| } |
| |
| SizeT SPARC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding) |
| { |
| UInt32 i; |
| if (size < 4) |
| return 0; |
| size -= 4; |
| for (i = 0; i <= size; i += 4) |
| { |
| if ((data[i] == 0x40 && (data[i + 1] & 0xC0) == 0x00) || |
| (data[i] == 0x7F && (data[i + 1] & 0xC0) == 0xC0)) |
| { |
| UInt32 src = |
| ((UInt32)data[i + 0] << 24) | |
| ((UInt32)data[i + 1] << 16) | |
| ((UInt32)data[i + 2] << 8) | |
| ((UInt32)data[i + 3]); |
| UInt32 dest; |
| |
| src <<= 2; |
| if (encoding) |
| dest = ip + i + src; |
| else |
| dest = src - (ip + i); |
| dest >>= 2; |
| |
| dest = (((0 - ((dest >> 22) & 1)) << 22) & 0x3FFFFFFF) | (dest & 0x3FFFFF) | 0x40000000; |
| |
| data[i + 0] = (Byte)(dest >> 24); |
| data[i + 1] = (Byte)(dest >> 16); |
| data[i + 2] = (Byte)(dest >> 8); |
| data[i + 3] = (Byte)dest; |
| } |
| } |
| return i; |
| } |