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Unified Diff: third_party/lzma/v4_65/files/C/Bra86.c

Issue 624713003: Keep only base/extractor.[cc|h]. (Closed) Base URL: https://chromium.googlesource.com/external/omaha.git@master
Patch Set: Created 6 years, 2 months ago
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Index: third_party/lzma/v4_65/files/C/Bra86.c
diff --git a/third_party/lzma/v4_65/files/C/Bra86.c b/third_party/lzma/v4_65/files/C/Bra86.c
deleted file mode 100644
index 1ee0e709b88771b7f00662fa77fad886a1a72343..0000000000000000000000000000000000000000
--- a/third_party/lzma/v4_65/files/C/Bra86.c
+++ /dev/null
@@ -1,85 +0,0 @@
-/* Bra86.c -- Converter for x86 code (BCJ)
-2008-10-04 : Igor Pavlov : Public domain */
-
-#include "Bra.h"
-
-#define Test86MSByte(b) ((b) == 0 || (b) == 0xFF)
-
-const Byte kMaskToAllowedStatus[8] = {1, 1, 1, 0, 1, 0, 0, 0};
-const Byte kMaskToBitNumber[8] = {0, 1, 2, 2, 3, 3, 3, 3};
-
-SizeT x86_Convert(Byte *data, SizeT size, UInt32 ip, UInt32 *state, int encoding)
-{
- SizeT bufferPos = 0, prevPosT;
- UInt32 prevMask = *state & 0x7;
- if (size < 5)
- return 0;
- ip += 5;
- prevPosT = (SizeT)0 - 1;
-
- for (;;)
- {
- Byte *p = data + bufferPos;
- Byte *limit = data + size - 4;
- for (; p < limit; p++)
- if ((*p & 0xFE) == 0xE8)
- break;
- bufferPos = (SizeT)(p - data);
- if (p >= limit)
- break;
- prevPosT = bufferPos - prevPosT;
- if (prevPosT > 3)
- prevMask = 0;
- else
- {
- prevMask = (prevMask << ((int)prevPosT - 1)) & 0x7;
- if (prevMask != 0)
- {
- Byte b = p[4 - kMaskToBitNumber[prevMask]];
- if (!kMaskToAllowedStatus[prevMask] || Test86MSByte(b))
- {
- prevPosT = bufferPos;
- prevMask = ((prevMask << 1) & 0x7) | 1;
- bufferPos++;
- continue;
- }
- }
- }
- prevPosT = bufferPos;
-
- if (Test86MSByte(p[4]))
- {
- UInt32 src = ((UInt32)p[4] << 24) | ((UInt32)p[3] << 16) | ((UInt32)p[2] << 8) | ((UInt32)p[1]);
- UInt32 dest;
- for (;;)
- {
- Byte b;
- int index;
- if (encoding)
- dest = (ip + (UInt32)bufferPos) + src;
- else
- dest = src - (ip + (UInt32)bufferPos);
- if (prevMask == 0)
- break;
- index = kMaskToBitNumber[prevMask] * 8;
- b = (Byte)(dest >> (24 - index));
- if (!Test86MSByte(b))
- break;
- src = dest ^ ((1 << (32 - index)) - 1);
- }
- p[4] = (Byte)(~(((dest >> 24) & 1) - 1));
- p[3] = (Byte)(dest >> 16);
- p[2] = (Byte)(dest >> 8);
- p[1] = (Byte)dest;
- bufferPos += 5;
- }
- else
- {
- prevMask = ((prevMask << 1) & 0x7) | 1;
- bufferPos++;
- }
- }
- prevPosT = bufferPos - prevPosT;
- *state = ((prevPosT > 3) ? 0 : ((prevMask << ((int)prevPosT - 1)) & 0x7));
- return bufferPos;
-}
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