4.44 beta

1 files changed, 63 insertions, 0 deletions

diff --git a/C/Compress/Branch/BranchIA64.c b/C/Compress/Branch/BranchIA64.c
new file mode 100755
index 00000000..e7775564
--- /dev/null
+++ b/C/Compress/Branch/BranchIA64.c
@@ -0,0 +1,63 @@
+/* BranchIA64.c */
+
+#include "BranchIA64.h"
+
+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 
+};
+
+UInt32 IA64_Convert(Byte *data, UInt32 size, UInt32 nowPos, int encoding)
+{
+  UInt32 i;
+  for (i = 0; i + 16 <= size; i += 16)
+  {
+    UInt32 instrTemplate = data[i] & 0x1F;
+    UInt32 mask = kBranchTable[instrTemplate];
+    UInt32 bitPos = 5;
+    for (int slot = 0; slot < 3; slot++, bitPos += 41)
+    {
+      if (((mask >> slot) & 1) == 0)
+        continue;
+      UInt32 bytePos = (bitPos >> 3);
+      UInt32 bitRes = bitPos & 0x7;
+      UInt64 instruction = 0;
+      int j;
+      for (j = 0; j < 6; j++)
+        instruction += (UInt64)(data[i + j + bytePos]) << (8 * j);
+
+      UInt64 instNorm = instruction >> bitRes;
+      if (((instNorm >> 37) & 0xF) == 0x5 
+        &&  ((instNorm >> 9) & 0x7) == 0 
+        /* &&  (instNorm & 0x3F)== 0 */
+        )
+      {
+        UInt32 src = UInt32((instNorm >> 13) & 0xFFFFF);
+        src |= ((instNorm >> 36) & 1) << 20;
+        
+        src <<= 4;
+        
+        UInt32 dest;
+        if (encoding)
+          dest = nowPos + i + src;
+        else
+          dest = src - (nowPos + 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));
+      }
+    }
+  }
+  return i;
+}