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[comboot] Unhook interrupt vectors after returning from a COMBOOT image

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This commit is contained in:
Michael Brown
2009-02-17 02:03:16 +00:00
parent 14eafc5b8d
commit 7f903f03af
4 changed files with 18 additions and 0 deletions
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15
src/arch/i386/interface/syslinux/comboot_call.c
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@@ -616,3 +616,18 @@ void hook_comboot_interrupts ( ) {
hook_bios_interrupt ( 0x22, ( unsigned int ) int22_wrapper,
&int22_vector );
}
/**
* Unhook BIOS interrupts related to COMBOOT API (INT 20h, 21h, 22h)
*/
void unhook_comboot_interrupts ( ) {
unhook_bios_interrupt ( 0x20, ( unsigned int ) int20_wrapper,
&int20_vector );
unhook_bios_interrupt ( 0x21, ( unsigned int ) int21_wrapper,
&int21_vector );
unhook_bios_interrupt ( 0x22, ( unsigned int ) int22_wrapper,
&int22_vector );
}