[Patch] BaseTools: Fix size override issue for Void* Patchable pcd

[Yonghong Zhu <yonghong.zhu@intel.com>]

when multiple driver link same library, and the drivers override the pcd
to different value in the DSC component section, it cause the pcd size
incorrect.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
---
 BaseTools/Source/Python/AutoGen/GenC.py | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/BaseTools/Source/Python/AutoGen/GenC.py b/BaseTools/Source/Python/AutoGen/GenC.py
index 0509a9f..a895067 100644
--- a/BaseTools/Source/Python/AutoGen/GenC.py
+++ b/BaseTools/Source/Python/AutoGen/GenC.py
@@ -912,10 +912,11 @@ def CreateModulePcdCode(Info, AutoGenC, AutoGenH, Pcd):
             TokenCName = PcdItem[0]
             break
     PcdTokenName = '_PCD_TOKEN_' + TokenCName
     PatchPcdSizeTokenName = '_PCD_PATCHABLE_' + TokenCName +'_SIZE'
     PatchPcdSizeVariableName = '_gPcd_BinaryPatch_Size_' + TokenCName
+    PatchPcdMaxSizeVariable = '_gPcd_BinaryPatch_MaxSize_' + TokenCName
     FixPcdSizeTokenName = '_PCD_SIZE_' + TokenCName
     FixedPcdSizeVariableName = '_gPcd_FixedAtBuild_Size_' + TokenCName
 
     if Pcd.PcdValueFromComm:
         Pcd.DefaultValue = Pcd.PcdValueFromComm
@@ -1159,10 +1160,11 @@ def CreateModulePcdCode(Info, AutoGenC, AutoGenH, Pcd):
             if Pcd.Type == TAB_PCDS_PATCHABLE_IN_MODULE:
                 AutoGenH.Append('#define %s %s\n' % (PatchPcdSizeTokenName, Pcd.MaxDatumSize))
                 AutoGenH.Append('#define %s  %s \n' % (GetModeSizeName,PatchPcdSizeVariableName))
                 AutoGenH.Append('extern UINTN %s; \n' % PatchPcdSizeVariableName)
                 AutoGenC.Append('GLOBAL_REMOVE_IF_UNREFERENCED UINTN %s = %s;\n' % (PatchPcdSizeVariableName,PcdDataSize))
+                AutoGenC.Append('GLOBAL_REMOVE_IF_UNREFERENCED const UINTN %s = %s;\n' % (PatchPcdMaxSizeVariable,Pcd.MaxDatumSize))
         elif Pcd.Type == TAB_PCDS_PATCHABLE_IN_MODULE:
             AutoGenH.Append('#define %s  %s\n' %(PcdValueName, Value))
             AutoGenC.Append('volatile %s %s %s = %s;\n' %(Const, Pcd.DatumType, PcdVariableName, PcdValueName))
             AutoGenH.Append('extern volatile %s  %s  %s%s;\n' % (Const, Pcd.DatumType, PcdVariableName, Array))
             AutoGenH.Append('#define %s  %s%s\n' % (GetModeName, Type, PcdVariableName))
@@ -1210,10 +1212,11 @@ def CreateLibraryPcdCode(Info, AutoGenC, AutoGenH, Pcd):
             break
     PcdTokenName = '_PCD_TOKEN_' + TokenCName
     FixPcdSizeTokenName = '_PCD_SIZE_' + TokenCName
     PatchPcdSizeTokenName = '_PCD_PATCHABLE_' + TokenCName +'_SIZE'
     PatchPcdSizeVariableName = '_gPcd_BinaryPatch_Size_' + TokenCName
+    PatchPcdMaxSizeVariable = '_gPcd_BinaryPatch_MaxSize_' + TokenCName
     FixedPcdSizeVariableName = '_gPcd_FixedAtBuild_Size_' + TokenCName
 
     if Pcd.PcdValueFromComm:
         Pcd.DefaultValue = Pcd.PcdValueFromComm
     #
@@ -1316,26 +1319,27 @@ def CreateLibraryPcdCode(Info, AutoGenC, AutoGenH, Pcd):
                 AutoGenH.Append('#define %s(SizeOfBuffer, Buffer)  LibPcdSet%sS(%s, (SizeOfBuffer), (Buffer))\n' % (SetModeStatusName, DatumSizeLib, PcdTokenName))
             else:
                 AutoGenH.Append('#define %s(Value)  LibPcdSet%s(%s, (Value))\n' % (SetModeName, DatumSizeLib, PcdTokenName))
                 AutoGenH.Append('#define %s(Value)  LibPcdSet%sS(%s, (Value))\n' % (SetModeStatusName, DatumSizeLib, PcdTokenName))
     if PcdItemType == TAB_PCDS_PATCHABLE_IN_MODULE:
+        GetModeMaxSizeName = '_PCD_GET_MODE_MAXSIZE' + '_' + TokenCName
         PcdVariableName = '_gPcd_' + gItemTypeStringDatabase[TAB_PCDS_PATCHABLE_IN_MODULE] + '_' + TokenCName
         if DatumType not in ['UINT8', 'UINT16', 'UINT32', 'UINT64', 'BOOLEAN']:
-            ArraySize = int(Pcd.MaxDatumSize, 0)
-            if Pcd.DefaultValue[0] == 'L':
-                ArraySize = ArraySize / 2
-            Array = '[%d]' % ArraySize
-            DatumType = ['UINT8', 'UINT16'][Pcd.DefaultValue[0] == 'L']
+            if DatumType == 'VOID*' and Array == '[]':
+                DatumType = ['UINT8', 'UINT16'][Pcd.DefaultValue[0] == 'L']
+            else:
+                DatumType = 'UINT8'
             AutoGenH.Append('extern %s _gPcd_BinaryPatch_%s%s;\n' %(DatumType, TokenCName, Array))
         else:
             AutoGenH.Append('extern volatile  %s  %s%s;\n' % (DatumType, PcdVariableName, Array))
         AutoGenH.Append('#define %s  %s_gPcd_BinaryPatch_%s\n' %(GetModeName, Type, TokenCName))
         PcdDataSize = GetPcdSize(Pcd)
         if Pcd.DatumType not in ['UINT8', 'UINT16', 'UINT32', 'UINT64', 'BOOLEAN']:
-            AutoGenH.Append('#define %s(SizeOfBuffer, Buffer)  LibPatchPcdSetPtrAndSize((VOID *)_gPcd_BinaryPatch_%s, &_gPcd_BinaryPatch_Size_%s, (UINTN)_PCD_PATCHABLE_%s_SIZE, (SizeOfBuffer), (Buffer))\n' % (SetModeName, TokenCName, TokenCName, TokenCName))
-            AutoGenH.Append('#define %s(SizeOfBuffer, Buffer)  LibPatchPcdSetPtrAndSizeS((VOID *)_gPcd_BinaryPatch_%s, &_gPcd_BinaryPatch_Size_%s, (UINTN)_PCD_PATCHABLE_%s_SIZE, (SizeOfBuffer), (Buffer))\n' % (SetModeStatusName, TokenCName, TokenCName, TokenCName))
-            AutoGenH.Append('#define %s %s\n' % (PatchPcdSizeTokenName, Pcd.MaxDatumSize))
+            AutoGenH.Append('#define %s(SizeOfBuffer, Buffer)  LibPatchPcdSetPtrAndSize((VOID *)_gPcd_BinaryPatch_%s, &%s, %s, (SizeOfBuffer), (Buffer))\n' % (SetModeName, TokenCName, PatchPcdSizeVariableName, PatchPcdMaxSizeVariable))
+            AutoGenH.Append('#define %s(SizeOfBuffer, Buffer)  LibPatchPcdSetPtrAndSizeS((VOID *)_gPcd_BinaryPatch_%s, &%s, %s, (SizeOfBuffer), (Buffer))\n' % (SetModeStatusName, TokenCName, PatchPcdSizeVariableName, PatchPcdMaxSizeVariable))
+            AutoGenH.Append('#define %s %s\n' % (GetModeMaxSizeName,PatchPcdMaxSizeVariable))
+            AutoGenH.Append('extern const UINTN %s; \n' % PatchPcdMaxSizeVariable)
         else:
             AutoGenH.Append('#define %s(Value)  (%s = (Value))\n' % (SetModeName, PcdVariableName))
             AutoGenH.Append('#define %s(Value)  ((%s = (Value)), RETURN_SUCCESS)\n' % (SetModeStatusName, PcdVariableName))
             AutoGenH.Append('#define %s %s\n' % (PatchPcdSizeTokenName, PcdDataSize))
 
-- 
2.6.1.windows.1