X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=DuetPkg%2FEfiLdr%2FTianoDecompress.c;h=6fed7a15917057edcfd8f0aaae7d54c2057ae96f;hb=c44f9a42d4a564cb04372389276cd48c05ad9914;hp=cac99381463c54afa5421925aac5fb37a8803bef;hpb=e188a609341e9cdb5e6de6bf80b870e42b8a4ddc;p=mirror_edk2.git

diff --git a/DuetPkg/EfiLdr/TianoDecompress.c b/DuetPkg/EfiLdr/TianoDecompress.c
index cac9938146..6fed7a1591 100644
--- a/DuetPkg/EfiLdr/TianoDecompress.c
+++ b/DuetPkg/EfiLdr/TianoDecompress.c
@@ -1,7 +1,7 @@
 /*++
 
-Copyright (c) 2004 - 2006, Intel Corporation                                                         
-All rights reserved. This program and the accompanying materials                          
+Copyright (c) 2004 - 2006, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials                          
 are licensed and made available under the terms and conditions of the BSD License         
 which accompanies this distribution.  The full text of the license may be found at        
 http://opensource.org/licenses/bsd-license.php                                            
@@ -26,7 +26,6 @@ Abstract:
 #define MAXMATCH  256
 #define THRESHOLD 3
 #define CODE_BIT  16
-#define UINT8_MAX 0xff
 #define BAD_TABLE - 1
 
 //
@@ -190,15 +189,19 @@ Returns:
   UINT16  Start[18];
   UINT16  *Pointer;
   UINT16  Index3;
-  UINT16  Index;
+  volatile UINT16  Index;
   UINT16  Len;
   UINT16  Char;
   UINT16  JuBits;
   UINT16  Avail;
   UINT16  NextCode;
   UINT16  Mask;
+  UINT16  WordOfStart;
+  UINT16  WordOfCount;
 
-  SetMem (&Count[1], sizeof(UINT16) * 16, 0);
+  for (Index = 1; Index <= 16; Index++) {
+    Count[Index] = 0;
+  }  
 
   for (Index = 0; Index < NumOfChar; Index++) {
     Count[BitLen[Index]]++;
@@ -207,7 +210,9 @@ Returns:
   Start[1] = 0;
 
   for (Index = 1; Index <= 16; Index++) {
-    Start[Index + 1] = (UINT16) (Start[Index] + (Count[Index] << (16 - Index)));
+    WordOfStart = Start[Index];
+    WordOfCount = Count[Index];
+    Start[Index + 1] = (UINT16) (WordOfStart + (WordOfCount << (16 - Index)));
   }
 
   if (Start[17] != 0) {
@@ -223,14 +228,17 @@ Returns:
   }
 
   while (Index <= 16) {
-    Weight[Index++] = (UINT16) (1U << (16 - Index));
+    Weight[Index] = (UINT16) (1U << (16 - Index));
+    Index++;
   }
 
   Index = (UINT16) (Start[TableBits + 1] >> JuBits);
 
   if (Index != 0) {
     Index3 = (UINT16) (1U << TableBits);
-    SetMem(&Table[Index], sizeof(UINT16) * (Index3 - Index + 1), 0);
+    while (Index != Index3) {
+      Table[Index++] = 0;
+    }
   }
 
   Avail = NumOfChar;
@@ -367,7 +375,7 @@ Returns:
 {
   UINT16  Number;
   UINT16  CharC;
-  UINT16  Index;
+  volatile UINT16  Index;
   UINT32  Mask;
 
   Number = (UINT16) GetBits (Sd, nbit);
@@ -379,7 +387,9 @@ Returns:
       Sd->mPTTable[Index] = CharC;
     }
 
-    SetMem ((VOID*) &Sd->mPTLen, nn * sizeof(UINT8), 0);
+    for (Index = 0; Index < nn; Index++) {
+      Sd->mPTLen[Index] = 0;
+    }
 
     return 0;
   }
@@ -410,7 +420,10 @@ Returns:
     }
   }
 
-  SetMem ((VOID*) &Sd->mPTLen[Index], (nn - Index) * sizeof(UINT8), 0);
+  while (Index < nn) {
+    Sd->mPTLen[Index++] = 0;
+  }
+
   return MakeTable (Sd, nn, Sd->mPTLen, 8, Sd->mPTTable);
 }
 
@@ -434,7 +447,7 @@ Returns: (VOID)
 {
   UINT16  Number;
   UINT16  CharC;
-  UINT16  Index;
+  volatile UINT16  Index;
   UINT32  Mask;
 
   Number = (UINT16) GetBits (Sd, CBIT);
@@ -442,7 +455,9 @@ Returns: (VOID)
   if (Number == 0) {
     CharC = (UINT16) GetBits (Sd, CBIT);
 
-    SetMem ((VOID*)&Sd->mCLen, sizeof(UINT8) * NC, 0);
+    for (Index = 0; Index < NC; Index++) {
+      Sd->mCLen[Index] = 0;
+    }
 
     for (Index = 0; Index < 4096; Index++) {
       Sd->mCTable[Index] = CharC;
@@ -496,7 +511,9 @@ Returns: (VOID)
     }
   }
 
-  SetMem ((VOID*) &Sd->mCLen[Index], sizeof(UINT8) * (NC - Index), 0);
+  while (Index < NC) {
+    Sd->mCLen[Index++] = 0;
+  }
 
   MakeTable (Sd, NC, Sd->mCLen, 12, Sd->mCTable);
 
@@ -597,7 +614,7 @@ Returns: (VOID)
   for (;;) {
     CharC = DecodeC (Sd);
     if (Sd->mBadTableFlag != 0) {
-      return ;
+      goto Done ;
     }
 
     if (CharC < 256) {
@@ -605,7 +622,7 @@ Returns: (VOID)
       // Process an Original character
       //
       if (Sd->mOutBuf >= Sd->mOrigSize) {
-        return ;
+        goto Done ;
       } else {
         Sd->mDstBase[Sd->mOutBuf++] = (UINT8) CharC;
       }
@@ -614,7 +631,7 @@ Returns: (VOID)
       //
       // Process a Pointer
       //
-      CharC       = (UINT16) (CharC - (UINT8_MAX + 1 - THRESHOLD));
+      CharC       = (UINT16) (CharC - (BIT8 - THRESHOLD));
 
       BytesRemain = CharC;
 
@@ -624,7 +641,7 @@ Returns: (VOID)
       while ((INT16) (BytesRemain) >= 0) {
         Sd->mDstBase[Sd->mOutBuf++] = Sd->mDstBase[DataIdx++];
         if (Sd->mOutBuf >= Sd->mOrigSize) {
-          return ;
+          goto Done ;
         }
 
         BytesRemain--;
@@ -632,6 +649,8 @@ Returns: (VOID)
     }
   }
 
+Done:
+  return ;
 }
 
 EFI_STATUS
@@ -715,7 +734,8 @@ Returns:
   SCRATCH_DATA  *Sd;
   UINT8         *Src;
   UINT8         *Dst;
-
+  volatile UINT32  Index;
+  
   Status  = EFI_SUCCESS;
   Src     = Source;
   Dst     = Destination;
@@ -750,8 +770,10 @@ Returns:
 
   Src = Src + 8;
 
-  SetMem ((VOID*) Sd, sizeof(SCRATCH_DATA), 0);
-
+  for (Index = 0; Index < sizeof (SCRATCH_DATA); Index++) {
+    ((UINT8 *) Sd)[Index] = 0;
+  }
+  
   //
   // The length of the field 'Position Set Code Length Array Size' in Block Header.
   // For EFI 1.1 de/compression algorithm(Version 1), mPBit = 4