| 1 | /* BraIA64.c -- Converter for IA-64 code |
| 2 | 2017-01-26 : Igor Pavlov : Public domain */ |
| 3 | |
| 4 | #include "Precomp.h" |
| 5 | |
| 6 | #include "CpuArch.h" |
| 7 | #include "Bra.h" |
| 8 | |
| 9 | SizeT IA64_Convert(Byte *data, SizeT size, UInt32 ip, int encoding) |
| 10 | { |
| 11 | SizeT i; |
| 12 | if (size < 16) |
| 13 | return 0; |
| 14 | size -= 16; |
| 15 | i = 0; |
| 16 | do |
| 17 | { |
| 18 | unsigned m = ((UInt32)0x334B0000 >> (data[i] & 0x1E)) & 3; |
| 19 | if (m) |
| 20 | { |
| 21 | m++; |
| 22 | do |
| 23 | { |
| 24 | Byte *p = data + (i + (size_t)m * 5 - 8); |
| 25 | if (((p[3] >> m) & 15) == 5 |
| 26 | && (((p[-1] | ((UInt32)p[0] << 8)) >> m) & 0x70) == 0) |
| 27 | { |
| 28 | unsigned raw = GetUi32(p); |
| 29 | unsigned v = raw >> m; |
| 30 | v = (v & 0xFFFFF) | ((v & (1 << 23)) >> 3); |
| 31 | |
| 32 | v <<= 4; |
| 33 | if (encoding) |
| 34 | v += ip + (UInt32)i; |
| 35 | else |
| 36 | v -= ip + (UInt32)i; |
| 37 | v >>= 4; |
| 38 | |
| 39 | v &= 0x1FFFFF; |
| 40 | v += 0x700000; |
| 41 | v &= 0x8FFFFF; |
| 42 | raw &= ~((UInt32)0x8FFFFF << m); |
| 43 | raw |= (v << m); |
| 44 | SetUi32(p, raw); |
| 45 | } |
| 46 | } |
| 47 | while (++m <= 4); |
| 48 | } |
| 49 | i += 16; |
| 50 | } |
| 51 | while (i <= size); |
| 52 | return i; |
| 53 | } |