#include <pexpert/pexpert.h>
#include <pexpert/protos.h>
#include <machine/machine_routines.h>
#include <i386/mp.h>
#include <sys/kdebug.h>
#if CONFIG_DTRACE && DEVELOPMENT
#include <mach/sdt.h>
#endif
void PE_incoming_interrupt(x86_saved_state_t *);
struct i386_interrupt_handler {
IOInterruptHandler handler;
void *nub;
void *target;
void *refCon;
};
typedef struct i386_interrupt_handler i386_interrupt_handler_t;
i386_interrupt_handler_t PE_interrupt_handler;
void
PE_incoming_interrupt(x86_saved_state_t *state)
{
i386_interrupt_handler_t *vector;
uint64_t rip;
int interrupt;
boolean_t user_mode = FALSE;
if (is_saved_state64(state) == TRUE) {
x86_saved_state64_t *state64;
state64 = saved_state64(state);
rip = state64->isf.rip;
interrupt = state64->isf.trapno;
user_mode = TRUE;
} else {
x86_saved_state32_t *state32;
state32 = saved_state32(state);
if (state32->cs & 0x03)
user_mode = TRUE;
rip = state32->eip;
interrupt = state32->trapno;
}
KERNEL_DEBUG_CONSTANT(
MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_START,
interrupt, (unsigned int)rip, user_mode, 0, 0);
vector = &PE_interrupt_handler;
#if CONFIG_DTRACE && DEVELOPMENT
DTRACE_INT5(interrupt_start, void *, vector->nub, int, 0,
void *, vector->target, IOInterruptHandler, vector->handler,
void *, vector->refCon);
#endif
if (!lapic_interrupt(interrupt, state)) {
vector->handler(vector->target, NULL, vector->nub, interrupt);
}
#if CONFIG_DTRACE && DEVELOPMENT
DTRACE_INT5(interrupt_complete, void *, vector->nub, int, 0,
void *, vector->target, IOInterruptHandler, vector->handler,
void *, vector->refCon);
#endif
KERNEL_DEBUG_CONSTANT(
MACHDBG_CODE(DBG_MACH_EXCP_INTR, 0) | DBG_FUNC_END,
0, 0, 0, 0, 0);
}
void PE_install_interrupt_handler(void *nub,
__unused int source,
void *target,
IOInterruptHandler handler,
void *refCon)
{
i386_interrupt_handler_t *vector;
vector = &PE_interrupt_handler;
vector->handler = handler;
vector->nub = nub;
vector->target = target;
vector->refCon = refCon;
}