ipxe/src/arch/i386/firmware/pcbios at f44205b9ea928c3cdefb6848e7f20fe11d112522 - ipxe

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Files

H. Peter Anvin f44205b9ea [pcbios] Don't use "lret $2" to return from an interrupt

Using "lret $2" to return from an interrupt causes interrupts to be
disabled in the calling program, since the INT instruction will have
disabled interrupts.  Instead, patch CF on the stack and use iret to
return.

Interestingly, the original PC BIOS had this bug in at least one
place.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Michael Brown <mcb30@etherboot.org>

2009-04-15 15:45:27 +01:00

basemem.c

Provide {get,set}_fbms() in basemem.h.

2007-01-13 23:57:31 +00:00

bios_console.c

[bios] Add F8 function key as a recognised BIOS keycode

2009-01-25 21:12:48 +00:00

e820mangler.S

[pcbios] Don't use "lret $2" to return from an interrupt

2009-04-15 15:45:27 +01:00

fakee820.c

[pcbios] Don't use "lret $2" to return from an interrupt