Alexandre Julliard : kernel32: Fix the base DOS memory address when the low 64K are not accessible.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: a488ee8e7adcf58d003710f6a21bfbf6551a4de3
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=a488ee8e7adcf58d003710f6a2...

Author: Alexandre Julliard <julliard(a)winehq.org>
Date:   Mon Nov 24 13:45:42 2008 +0100

kernel32: Fix the base DOS memory address when the low 64K are not accessible.

---

 dlls/kernel32/dosmem.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/dlls/kernel32/dosmem.c b/dlls/kernel32/dosmem.c
index a1bff4d..8b0653b 100644
--- a/dlls/kernel32/dosmem.c
+++ b/dlls/kernel32/dosmem.c
@@ -170,15 +170,16 @@ BOOL DOSMEM_Init(void)
         ExitProcess(1);
     }
 
-    DOSMEM_dosmem = addr;
-    if (!addr)
+    if (addr <= (void *)DOSMEM_64KB)
     {
+        DOSMEM_dosmem = 0;
         DOSMEM_protect = DOSMEM_64KB;
         sysmem = (char *)0xf0000;  /* store sysmem in high addresses for now */
     }
     else
     {
         WARN( "First megabyte not available for DOS address space.\n" );
+        DOSMEM_dosmem = addr;
         DOSMEM_protect = 0;
         sysmem = DOSMEM_dosmem;
     }