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| author | Kevin O'Connor <kevin@koconnor.net> | 2014-05-12 01:26:26 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2014-05-13 10:51:29 -0400 |
| commit | 3c37cdb1977056f875edb48513729409bd752d57 (patch) | |
| tree | 0b4ccb80ce0dd02197d15c1ace98f98197ea44cf /vgasrc | |
| parent | b1d4dc908401719c5de78c25313cf82c7cd1d602 (diff) | |
| download | qemu-seabios-3c37cdb1977056f875edb48513729409bd752d57.tar.gz | |
vgabios: Add debug message if x86emu leal check triggers.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Diffstat (limited to 'vgasrc')
| -rw-r--r-- | vgasrc/vgaentry.S | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/vgasrc/vgaentry.S b/vgasrc/vgaentry.S index 6e31c4e..11197f1 100644 --- a/vgasrc/vgaentry.S +++ b/vgasrc/vgaentry.S @@ -47,7 +47,17 @@ _rom_header_signature: // Force a fault if found to be running on broken x86emu versions. DECLFUNC x86emu_fault +msg: .ascii "SeaVGABIOS: x86emu leal trap!\n" x86emu_fault: +#if CONFIG_DEBUG_IO + movw %cs:DebugOutputPort, %dx + movw $msg, %si +1: movb %cs:(%si), %al + outb %al, (%dx) + incw %si + cmpw $x86emu_fault, %si + jl 1b +#endif 1: hlt jmp 1b |