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Diffstat (limited to 'arch/i386/boot/idt.c')
-rw-r--r--arch/i386/boot/idt.c162
1 files changed, 0 insertions, 162 deletions
diff --git a/arch/i386/boot/idt.c b/arch/i386/boot/idt.c
deleted file mode 100644
index 7b9401d..0000000
--- a/arch/i386/boot/idt.c
+++ /dev/null
@@ -1,162 +0,0 @@
-#include <kernel/syscall.h>
-#include <kernel/panic.h>
-#include <kernel/gdt.h>
-#include <kernel/isr.h>
-#include <kernel/io.h>
-#include <kernel/pic.h>
-#include <kernel/string.h>
-#include <kernel/paging.h>
-#include <stdint.h>
-
-__attribute__((aligned(0x10)))
-struct idt_entry idt[256];
-struct idt_ptr idtr;
-
-const char* exceptions[] = {
- "Division by zero",
- "Debug",
- "Non-maskable interrupt",
- "Breakpoint",
- "Overflow",
- "Out-of-bounds",
- "Invalid opcode",
- "FPU not available",
- "Double fault",
- "RESERVED",
- "Invalid TSS",
- "Segment not present",
- "Stack fault",
- "General protection fault",
- "Page fault",
- "RESERVED",
- "FPU exception",
- "Alignment check",
- "Machine check",
- "FPU-SIMD exception",
- "Virtualization exception",
- "Control protection"
- "RESERVED",
- "Hypervisor injection",
- "VMM exception",
- "Security exception",
- "RESERVED",
- "Triple fault",
- "RESERVED"
-};
-
-__attribute__((noreturn))
-void halt_catch_fire(struct isr_frame *frame) {
- dump_reg(frame);
- kprintf("ERRNO=%x\n", frame->errno);
- __asm__ volatile("cli;hlt");
- while (1);
-}
-
-void exception_handler(struct isr_frame *frame) {
- switch (frame->vector) {
- case 0x00:
- panic("Division by zero in kernel address space");
- halt_catch_fire(frame);
- case 0x06:
- panic("Invalid opcode in kernel address space");
- halt_catch_fire(frame);
- case 0x08:
- panic("Double fault in interrupt handler");
- halt_catch_fire(frame);
- case 0x0D:
- panic("Protection fault in kernel address space");
- halt_catch_fire(frame);
- case 0x0E:
- page_fault_handler(frame);
- break;
- default:
- panic("Unhandled exception");
- halt_catch_fire(frame);
- }
-}
-
-void interrupt_handler(struct isr_frame frame) {
- if (frame.vector < 32) {
- exception_handler(&frame);
- } else if (frame.vector < 48) {
- irq_dispatch(&frame);
- } else {
- switch (frame.vector) {
- case 0x80:
- handle_syscall(&frame);
- break;
- default:
- panic("Unmapped interrupt");
- halt_catch_fire(&frame);
- __asm__ volatile("cli;hlt");
- }
- }
-}
-
-void idt_set_gate(uint8_t num, void (*handler)(void), uint16_t cs, uint8_t flags) {
- struct idt_entry *desc = &idt[num];
- desc->isr_low = (uint16_t)(((uint32_t)handler >> 0) & 0xFFFF);
- desc->isr_high = (uint16_t)(((uint32_t)handler >> 16) & 0xFFFF);
- desc->reserved = 0;
- desc->kernel_cs = cs;
- desc->flags = flags;
-}
-
-void idt_install(void) {
- idtr.limit = (uint16_t)sizeof(struct idt_entry) * 256 - 1;
- idtr.base = (uint32_t)idt;
-
- idt_set_gate(0x0, isr_stub_0, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x1, isr_stub_1, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x2, isr_stub_2, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x3, isr_stub_3, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x4, isr_stub_4, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x5, isr_stub_5, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x6, isr_stub_6, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x7, isr_stub_7, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x8, isr_stub_8, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x9, isr_stub_9, 0x08, IDT_EXCEPTION);
- idt_set_gate(0xA, isr_stub_10, 0x08, IDT_EXCEPTION);
- idt_set_gate(0xB, isr_stub_11, 0x08, IDT_EXCEPTION);
- idt_set_gate(0xC, isr_stub_12, 0x08, IDT_EXCEPTION);
- idt_set_gate(0xD, isr_stub_13, 0x08, IDT_EXCEPTION);
- idt_set_gate(0xE, isr_stub_14, 0x08, IDT_EXCEPTION);
- idt_set_gate(0xF, isr_stub_15, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x10, isr_stub_16, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x11, isr_stub_17, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x12, isr_stub_18, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x13, isr_stub_19, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x14, isr_stub_20, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x15, isr_stub_21, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x16, isr_stub_22, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x17, isr_stub_23, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x18, isr_stub_24, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x19, isr_stub_25, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x1A, isr_stub_26, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x1B, isr_stub_27, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x1C, isr_stub_28, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x1D, isr_stub_29, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x1E, isr_stub_30, 0x08, IDT_EXCEPTION);
- idt_set_gate(0x1F, isr_stub_31, 0x08, IDT_EXCEPTION);
-
- idt_set_gate(0x20, irq_stub_0, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x21, irq_stub_1, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x22, irq_stub_2, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x23, irq_stub_3, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x24, irq_stub_4, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x25, irq_stub_5, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x26, irq_stub_6, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x27, irq_stub_7, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x28, irq_stub_8, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x29, irq_stub_9, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x2A, irq_stub_10, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x2B, irq_stub_11, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x2C, irq_stub_12, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x2D, irq_stub_13, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x2E, irq_stub_14, 0x08, IDT_INTERRUPT);
- idt_set_gate(0x2F, irq_stub_15, 0x08, IDT_INTERRUPT);
-
- idt_set_gate(0x80, syscall_stub, 0x08, IDT_INTERRUPT);
-
- __asm__ volatile("lidt %0" : : "memory"(idtr));
-}
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