INITCODE void arch_faults_init(void)
{
int slot, ist;
uint8_t dpl;
for (slot = 0; slot < IDT_NUM_FAULTS; slot++) {
/* allow jump to the breakpoint handler from user space */
dpl = (slot == FLT_BP) ? SEG_DPL_USER : SEG_DPL_KERNEL;
ist = get_ist_by_fault(slot);
idt_install_gate(slot, SEG_TYPE_INTR, dpl,
GET_FAULTS_TABLE_ENTRY(slot), ist);
}
SET_FAULT_HANDLER(FLT_DE, FH_devide_by_zero);
SET_FAULT_HANDLER(FLT_DB, FH_debug);
SET_FAULT_HANDLER(FLT_NMI, FH_nmi);
SET_FAULT_HANDLER(FLT_BP, FH_breakpoint);
SET_FAULT_HANDLER(FLT_OF, FH_overflow);
SET_FAULT_HANDLER(FLT_BR, FH_bound_range);
SET_FAULT_HANDLER(FLT_UD, FH_invalid_opcode);
SET_FAULT_HANDLER(FLT_NM, FH_device_not_avail);
SET_FAULT_HANDLER(FLT_DF, FH_double_fault);
SET_FAULT_HANDLER(FLT_TS, FH_invalid_tss);
SET_FAULT_HANDLER(FLT_NP, FH_segment_not_present);
SET_FAULT_HANDLER(FLT_SS, FH_stack_exception);
SET_FAULT_HANDLER(FLT_GP, FH_general_protection_fault);
SET_FAULT_HANDLER(FLT_PF, FH_page_fault);
SET_FAULT_HANDLER(FLT_MF, FH_floating_point_exception);
SET_FAULT_HANDLER(FLT_AC, FH_alignment_check);
SET_FAULT_HANDLER(FLT_MC, FH_machine_check);
SET_FAULT_HANDLER(FLT_XF, FH_simd_floating_point);
SET_FAULT_HANDLER(FLT_SX, FH_security_exception);
init_reserved_faults();
}
/**
* Installs the Syscall Handler
*/
void syscall_init(void)
{
/* Install interrupt at vector 0x80 */
idt_install_gate(0x80, IDT_DESC_PRESENT | IDT_DESC_BIT32 | IDT_DESC_RING3,
(GDT_KERNEL_CODE << 3), (int_handler_t)syscall_irq_handler);
}
void exception_init()
{
//Hardware exceptions x86
idt_install_gate(0, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler0);
idt_install_gate(1, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler1);
idt_install_gate(2, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler2);
idt_install_gate(3, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler3);
idt_install_gate(4, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler4);
idt_install_gate(5, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler5);
idt_install_gate(6, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler6);
idt_install_gate(7, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler7);
idt_install_gate(8, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler8);
idt_install_gate(9, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler9);
idt_install_gate(10, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler10);
idt_install_gate(11, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler11);
idt_install_gate(12, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler12);
idt_install_gate(13, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler13);
idt_install_gate(14, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler14);
idt_install_gate(15, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler15);
idt_install_gate(16, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler16);
idt_install_gate(17, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler17);
idt_install_gate(18, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler18);
idt_install_gate(19, (uint16_t)(IDT_DESC_PRESENT | IDT_DESC_BIT32), (GDT_KERNEL_CODE << 3), (irq_handler)isr_handler19);
}
