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54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
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/* BraIA64.c -- Converter for IA-64 code
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2017-01-26 : Igor Pavlov : Public domain */
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#include "Precomp.h"
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#include "CpuArch.h"
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#include "Bra.h"
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SizeT IA64_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)
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{
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SizeT i;
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if (size < 16)
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return 0;
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size -= 16;
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i = 0;
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do
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{
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unsigned m = ((UInt32)0x334B0000 >> (data[i] & 0x1E)) & 3;
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if (m)
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{
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m++;
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do
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{
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Byte *p = data + (i + (size_t)m * 5 - 8);
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if (((p[3] >> m) & 15) == 5
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&& (((p[-1] | ((UInt32)p[0] << 8)) >> m) & 0x70) == 0)
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{
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unsigned raw = GetUi32(p);
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unsigned v = raw >> m;
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v = (v & 0xFFFFF) | ((v & (1 << 23)) >> 3);
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v <<= 4;
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if (encoding)
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v += ip + (UInt32)i;
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else
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v -= ip + (UInt32)i;
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v >>= 4;
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v &= 0x1FFFFF;
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v += 0x700000;
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v &= 0x8FFFFF;
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raw &= ~((UInt32)0x8FFFFF << m);
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raw |= (v << m);
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SetUi32(p, raw);
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}
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}
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while (++m <= 4);
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}
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i += 16;
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}
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while (i <= size);
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return i;
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}
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