diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/i386/prefix/libprefix.S | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/arch/i386/prefix/libprefix.S b/src/arch/i386/prefix/libprefix.S index 10227818c..f0f7682b5 100644 --- a/src/arch/i386/prefix/libprefix.S +++ b/src/arch/i386/prefix/libprefix.S @@ -254,6 +254,7 @@ flatten_real_mode: /* Preserve real-mode segment values and temporary registers */ pushw %es pushw %ds + pushw %bp pushl %eax /* Set GDT base and load GDT */ @@ -261,8 +262,11 @@ flatten_real_mode: movw %cs, %ax shll $4, %eax addl $gdt, %eax - movl %eax, %cs:gdt_base - lgdt %cs:gdt + pushl %eax + pushw %cs:gdt_limit + movw %sp, %bp + lgdt (%bp) + addw $6, %sp /* Switch to protected mode */ movl %cr0, %eax @@ -281,6 +285,7 @@ flatten_real_mode: /* Restore real-mode segment values and temporary registers */ popl %eax + popw %bp popw %ds popw %es ret |