diff options
Diffstat (limited to '3rdparty/lzma/C/BraIA64.c')
-rw-r--r-- | 3rdparty/lzma/C/BraIA64.c | 82 |
1 files changed, 33 insertions, 49 deletions
diff --git a/3rdparty/lzma/C/BraIA64.c b/3rdparty/lzma/C/BraIA64.c index fa60356b288..d1dbc62c55b 100644 --- a/3rdparty/lzma/C/BraIA64.c +++ b/3rdparty/lzma/C/BraIA64.c @@ -1,69 +1,53 @@ /* BraIA64.c -- Converter for IA-64 code -2013-11-12 : Igor Pavlov : Public domain */ +2017-01-26 : Igor Pavlov : Public domain */ #include "Precomp.h" +#include "CpuArch.h" #include "Bra.h" -static const Byte kBranchTable[32] = -{ - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 4, 4, 6, 6, 0, 0, 7, 7, - 4, 4, 0, 0, 4, 4, 0, 0 -}; - SizeT IA64_Convert(Byte *data, SizeT size, UInt32 ip, int encoding) { SizeT i; if (size < 16) return 0; size -= 16; - for (i = 0; i <= size; i += 16) + i = 0; + do { - UInt32 instrTemplate = data[i] & 0x1F; - UInt32 mask = kBranchTable[instrTemplate]; - UInt32 bitPos = 5; - int slot; - for (slot = 0; slot < 3; slot++, bitPos += 41) + unsigned m = ((UInt32)0x334B0000 >> (data[i] & 0x1E)) & 3; + if (m) { - UInt32 bytePos, bitRes; - UInt64 instruction, instNorm; - int j; - if (((mask >> slot) & 1) == 0) - continue; - bytePos = (bitPos >> 3); - bitRes = bitPos & 0x7; - instruction = 0; - for (j = 0; j < 6; j++) - instruction += (UInt64)data[i + j + bytePos] << (8 * j); - - instNorm = instruction >> bitRes; - if (((instNorm >> 37) & 0xF) == 0x5 && ((instNorm >> 9) & 0x7) == 0) + m++; + do { - UInt32 src = (UInt32)((instNorm >> 13) & 0xFFFFF); - UInt32 dest; - src |= ((UInt32)(instNorm >> 36) & 1) << 20; - - src <<= 4; - - if (encoding) - dest = ip + (UInt32)i + src; - else - dest = src - (ip + (UInt32)i); - - dest >>= 4; - - instNorm &= ~((UInt64)(0x8FFFFF) << 13); - instNorm |= ((UInt64)(dest & 0xFFFFF) << 13); - instNorm |= ((UInt64)(dest & 0x100000) << (36 - 20)); - - instruction &= (1 << bitRes) - 1; - instruction |= (instNorm << bitRes); - for (j = 0; j < 6; j++) - data[i + j + bytePos] = (Byte)(instruction >> (8 * j)); + Byte *p = data + (i + (size_t)m * 5 - 8); + if (((p[3] >> m) & 15) == 5 + && (((p[-1] | ((UInt32)p[0] << 8)) >> m) & 0x70) == 0) + { + unsigned raw = GetUi32(p); + unsigned v = raw >> m; + v = (v & 0xFFFFF) | ((v & (1 << 23)) >> 3); + + v <<= 4; + if (encoding) + v += ip + (UInt32)i; + else + v -= ip + (UInt32)i; + v >>= 4; + + v &= 0x1FFFFF; + v += 0x700000; + v &= 0x8FFFFF; + raw &= ~((UInt32)0x8FFFFF << m); + raw |= (v << m); + SetUi32(p, raw); + } } + while (++m <= 4); } + i += 16; } + while (i <= size); return i; } |