[fireball] 28903: - Fix LoaderPagesSpanned calculation.

Author: fireball
Date: Thu Sep  6 21:18:42 2007
New Revision: 28903

URL: http://svn.reactos.org/svn/reactos?rev=28903&view=rev
Log:
- Fix LoaderPagesSpanned calculation.

Modified:
    trunk/reactos/ntoskrnl/ke/freeldr.c

Modified: trunk/reactos/ntoskrnl/ke/freeldr.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/freeldr.c?rev=…
==============================================================================
--- trunk/reactos/ntoskrnl/ke/freeldr.c (original)
+++ trunk/reactos/ntoskrnl/ke/freeldr.c Thu Sep  6 21:18:42 2007
@@ -1111,11 +1111,13 @@
     LoaderBlock->Extension->MajorVersion = 5;
     LoaderBlock->Extension->MinorVersion = 2;
 
-    /* Save the number of pages the kernel images take */
-    LoaderBlock->Extension->LoaderPagesSpanned =
-        PAGE_ROUND_UP(KeRosLoaderBlock->
-                      ModsAddr[KeRosLoaderBlock->ModsCount - 1].ModEnd) -
-        KeRosLoaderBlock->ModsAddr[0].ModStart;
+    /* FreeLDR hackllocates 1536 static pages for the initial boot images */
+    LoaderBlock->Extension->LoaderPagesSpanned = 1536 * PAGE_SIZE;
+
+    /* ReactOS always boots the kernel at 0x80800000 (just like NT 5.2) */
+    LoaderBlock->Extension->LoaderPagesSpanned += 0x80800000 - KSEG0_BASE;
+
+    /* Now convert to pages */
     LoaderBlock->Extension->LoaderPagesSpanned /= PAGE_SIZE;
 
     /* Now setup the setup block if we have one */