Kernel

Doc/Todo.txt

@@ -2,15 +2,10 @@ Cxbx Todo:
 
   General Code Cleanup [caustik]
 
-  - FS: structure construction (EmuXInit)
-
-      - Initialize necessary components of EmuXFS
-      - SwapFS before *all* Win32/NT calls.
-
-  Debug outputs should be configurable to STDOUT (console) or text file.
-
-      - Passing a ptr to CxbxKrnl is not enough (seperate process) pass the
-        full DebugFilename.
+  Use KeGetCurrentThread for fs:28h (May not be able to w/out kernel mode)
+  If not, fake it by constructing a fake KTHREAD possibly. In any event,
+  the current crashing method is an attempt to locate TLSData inside of a
+  KTHREAD object returned by fs:28h.
 
   Exe->Xbe should use an "OpenXDK" logo bitmap by default. This can be done
   by having a debug version of Cxbx output the necessary raw data. Then, you

Include/Win32/CxbxKrnl/CxbxKrnl.h

@@ -76,21 +76,6 @@ CXBXKRNL_API void NTAPI EmuXDummy();
 // ******************************************************************
 CXBXKRNL_API void NTAPI EmuXPanic();
 
-// ******************************************************************
-// * _EMUX_KPCR
-// ******************************************************************
-// *
-// * Emulated Xbox KPCR. Includes special field(s) for emulation
-// * purposes.
-// *
-// ******************************************************************
-typedef struct _EMUX_KPCR
-{
-    struct xboxkrnl::_KPCR  Pcr;
-    uint16                  OriginalFS;     // 0x025C (our cached FS register from win2k/XP)
-}
-EMUX_KPCR, *PEMUX_KPCR;
-
 #if defined(__cplusplus)
 }
 #endif

Resource/Cxbx.rc

@@ -97,7 +97,7 @@ BEGIN
         POPUP "&Patch", GRAYED
         BEGIN
             MENUITEM "&Allow >64 MB",               ID_EDIT_PATCH_ALLOW64MB
-            MENUITEM "Debug Mode",                  ID_EDIT_PATCH_DEBUGMODE
+            MENUITEM "&Debug Mode",                 ID_EDIT_PATCH_DEBUGMODE
         END
         MENUITEM SEPARATOR
         MENUITEM "Extract &Xbe Info...",        ID_EDIT_EXTRACTXBEINFO
@@ -112,7 +112,7 @@ BEGIN
             MENUITEM "&File...",                    ID_VIEW_DEBUGOUTPUTGUI_FILE
 
         END
-        POPUP "Debug Output (Kernel)"
+        POPUP "Debug Output (&Kernel)"
         BEGIN
             MENUITEM "&Console",                    ID_VIEW_DEBUGOUTPUTKERNEL_CONSOLE
 

Source/Win32/CxbxKrnl/CxbxKrnl.cpp

@@ -84,13 +84,17 @@ inline void EmuXSwapFS()
 // ******************************************************************
 void EmuXGenerateFS()
 {
-    uint16 OrgFS = 0;
+    NT_TIB         *OrgNtTib;
+    xboxkrnl::KPCR *NewPcr;
 
-    uint32 dwSize = sizeof(EMUX_KPCR);
+    uint16 NewFS=0;
+    uint16 OrgFS=0;
 
-    uint32 pNewFS = (uint32)new char[dwSize];
+    uint32 dwSize = sizeof(xboxkrnl::KPCR);
 
-    uint16 NewFS = LDTAllocate(pNewFS, pNewFS + dwSize);
+    NewPcr = (xboxkrnl::KPCR*)new char[dwSize];
+
+    NewFS = LDTAllocate((uint32)NewPcr, (uint32)NewPcr + dwSize);
 
     // ******************************************************************
     // * Obtain "OrgFS"
@@ -101,13 +105,31 @@ void EmuXGenerateFS()
         mov OrgFS, ax
     }
 
+    // ******************************************************************
+    // * Obtain "OrgNtTib"
+    // ******************************************************************
+    __asm
+    {
+        mov eax, fs:[0x18]
+        mov OrgNtTib, eax
+    }
+
     // ******************************************************************
     // * Save "NewFS" inside OrgFS.ArbitraryUserPointer
     // ******************************************************************
     __asm
     {
         mov ax, NewFS
-        mov fs:[0x14], ax   // FS.ArbitraryUserPointer
+        mov fs:[0x14], ax   // OrgFS.ArbitraryUserPointer
+    }
+
+    // ******************************************************************
+    // * Generate TIB
+    // ******************************************************************
+    {
+        memcpy(&NewPcr->NtTib, OrgNtTib, sizeof(NT_TIB));
+
+        NewPcr->NtTib.Self = &NewPcr->NtTib;
     }
 
     // ******************************************************************
@@ -121,7 +143,7 @@ void EmuXGenerateFS()
     __asm
     {
         mov ax, OrgFS
-        mov fs:[0x14], ax   // FS.ArbitraryUserPointer
+        mov fs:[0x14], ax   // NewFS.ArbitraryUserPointer
     }
 
     // ******************************************************************