| commit | 4ee3835fef6489e03c43b758b67fe0f522de1b02 | |
| author | Avi Kivity <avi@redhat.com> | |
| Thu, 24 Dec 2009 13:38:50 +0000 (24 15:38 +0200) | ||
| committer | Marcelo Tosatti <mtosatti@redhat.com> | |
| Thu, 24 Dec 2009 14:33:37 +0000 (24 12:33 -0200) | ||
| tree | b31a3f9a4a3faef1096bb3248c91ffcee703d1df | treesnapshot (tar.gz zip) |
| parent | d1a1178b6b4d1fd9cad0986406fa662270cf2b6e | commitdiff |
linuxboot: fix gdt address calculation
The gdt address calculation in linuxboot.bin is broken in two ways: first
it loads %cs into %eax, but that instruction leaves the high bits of %eax
undefined and we did not clear them. Secondly, we completely ignore the
incorrect %eax, and use the undefined %ebx instead.
With these issues fixed, linuxboot works again.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
The gdt address calculation in linuxboot.bin is broken in two ways: first
it loads %cs into %eax, but that instruction leaves the high bits of %eax
undefined and we did not clear them. Secondly, we completely ignore the
incorrect %eax, and use the undefined %ebx instead.
With these issues fixed, linuxboot works again.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| pc-bios/optionrom/linuxboot.S | diffblobblamehistory |