diff options
Diffstat (limited to 'contrib/syslinux-4.02/gpxe/src/arch/i386/include/biosint.h')
| -rw-r--r-- | contrib/syslinux-4.02/gpxe/src/arch/i386/include/biosint.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/include/biosint.h b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/biosint.h new file mode 100644 index 0000000..ab466af --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/include/biosint.h @@ -0,0 +1,33 @@ +#ifndef BIOSINT_H +#define BIOSINT_H + +/** + * @file BIOS interrupts + * + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#include <realmode.h> + +struct segoff; + +/** + * Hooked interrupt count + * + * At exit, after unhooking all possible interrupts, this counter + * should be examined. If it is non-zero, it means that we failed to + * unhook at least one interrupt vector, and so must not free up the + * memory we are using. (Note that this also implies that we should + * re-hook INT 15 in order to hide ourselves from the memory map). + */ +extern uint16_t __text16 ( hooked_bios_interrupts ); +#define hooked_bios_interrupts __use_text16 ( hooked_bios_interrupts ) + +extern void hook_bios_interrupt ( unsigned int interrupt, unsigned int handler, + struct segoff *chain_vector ); +extern int unhook_bios_interrupt ( unsigned int interrupt, + unsigned int handler, + struct segoff *chain_vector ); + +#endif /* BIOSINT_H */ |