Fixed GetExtendedMemorySize(). My i486-DX4/75 didn't like the old routine.

[reactos.git] / freeldr / freeldr / mem.S

diff --git a/freeldr/freeldr/mem.S b/freeldr/freeldr/mem.S
index 631eb35..770a1de 100644 (file)
--- a/freeldr/freeldr/mem.S
+++ b/freeldr/freeldr/mem.S
@@ -46,19 +46,19 @@ EXTERN(_GetExtendedMemorySize)
        cmpw    $0,%ax
        je              .cmem
 
        cmpw    $0,%ax
        je              .cmem
 

-       andl    $0xffff,%ebx
+       movzwl  %bx,%ebx

        shll    $6,%ebx
        shll    $6,%ebx

-       andl    $0xffff,%eax
-       add             %ebx,%eax
+       movzwl  %ax,%eax
+       addl    %ebx,%eax

        jmp             .done_mem
 
 .cmem:
        cmpw    $0,%cx
        je              .oldstylemem
 
        jmp             .done_mem
 
 .cmem:
        cmpw    $0,%cx
        je              .oldstylemem
 

-       andl    $0xffff,%edx
+       movzwl  %dx,%edx

        shll    $6,%edx
        shll    $6,%edx

-       andl    $0xffff,%ecx
+       movzwl  %cx,%ecx

        addl    %ecx,%edx
        movl    %edx,%eax
        jmp             .done_mem
        addl    %ecx,%edx
        movl    %edx,%eax
        jmp             .done_mem