111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
#include <string.h>
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#include <idt.h>
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#define IDT_ENTRIES 256
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struct idt_entry idt[IDT_ENTRIES];
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struct idt_ptr idtp;
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extern void idt_load(uint32_t);
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void idt_install(void)
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{
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idtp.limit = sizeof(struct idt_entry) * IDT_ENTRIES - 1;
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idtp.base = (uint32_t)&idt;
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memset(&idt, 0, sizeof(struct idt_entry) * IDT_ENTRIES);
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/* Set entries for IRQs/ISRs here using `idt_set_entry(...)` */
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/* Example: idt_set_entry(0, (uint32_t)isr0, 0x08, 0x8E); */
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idt_load((uint32_t)&idtp);
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}
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void idt_set_entry(int num, uint32_t base, uint16_t sel, uint8_t flags)
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{
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idt[num].base_low = base & 0xFFFF;
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idt[num].base_high = (base >> 16) & 0xFFFF;
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idt[num].sel = sel;
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idt[num].always0 = 0;
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idt[num].flags = flags;
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}
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extern void isr0();
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extern void isr1();
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extern void isr2();
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extern void isr3();
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extern void isr4();
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extern void isr5();
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extern void isr6();
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extern void isr7();
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extern void isr8();
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extern void isr9();
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extern void isr10();
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extern void isr11();
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extern void isr12();
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extern void isr13();
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extern void isr14();
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extern void isr15();
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extern void isr16();
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extern void isr17();
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extern void isr18();
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extern void isr19();
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extern void isr20();
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extern void isr21();
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extern void isr22();
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extern void isr23();
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extern void isr24();
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extern void isr25();
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extern void isr26();
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extern void isr27();
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extern void isr28();
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extern void isr29();
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extern void isr30();
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extern void isr31();
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extern void isr128();
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void idt_install_isrs(void)
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{
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idt_set_entry(0, (uint32_t)isr0, 0x08, 0x8E);
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idt_set_entry(1, (uint32_t)isr1, 0x08, 0x8E);
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idt_set_entry(2, (uint32_t)isr2, 0x08, 0x8E);
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idt_set_entry(3, (uint32_t)isr3, 0x08, 0x8E);
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idt_set_entry(4, (uint32_t)isr4, 0x08, 0x8E);
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idt_set_entry(5, (uint32_t)isr5, 0x08, 0x8E);
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idt_set_entry(6, (uint32_t)isr6, 0x08, 0x8E);
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idt_set_entry(7, (uint32_t)isr7, 0x08, 0x8E);
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idt_set_entry(8, (uint32_t)isr8, 0x08, 0x8E);
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idt_set_entry(9, (uint32_t)isr9, 0x08, 0x8E);
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idt_set_entry(10, (uint32_t)isr10, 0x08, 0x8E);
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idt_set_entry(11, (uint32_t)isr11, 0x08, 0x8E);
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idt_set_entry(12, (uint32_t)isr12, 0x08, 0x8E);
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idt_set_entry(13, (uint32_t)isr13, 0x08, 0x8E);
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idt_set_entry(14, (uint32_t)isr14, 0x08, 0x8E);
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idt_set_entry(15, (uint32_t)isr15, 0x08, 0x8E);
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idt_set_entry(16, (uint32_t)isr16, 0x08, 0x8E);
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idt_set_entry(17, (uint32_t)isr17, 0x08, 0x8E);
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idt_set_entry(18, (uint32_t)isr18, 0x08, 0x8E);
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idt_set_entry(19, (uint32_t)isr19, 0x08, 0x8E);
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idt_set_entry(20, (uint32_t)isr20, 0x08, 0x8E);
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idt_set_entry(21, (uint32_t)isr21, 0x08, 0x8E);
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idt_set_entry(22, (uint32_t)isr22, 0x08, 0x8E);
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idt_set_entry(23, (uint32_t)isr23, 0x08, 0x8E);
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idt_set_entry(24, (uint32_t)isr24, 0x08, 0x8E);
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idt_set_entry(25, (uint32_t)isr25, 0x08, 0x8E);
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idt_set_entry(26, (uint32_t)isr26, 0x08, 0x8E);
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idt_set_entry(27, (uint32_t)isr27, 0x08, 0x8E);
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idt_set_entry(28, (uint32_t)isr28, 0x08, 0x8E);
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idt_set_entry(29, (uint32_t)isr29, 0x08, 0x8E);
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idt_set_entry(30, (uint32_t)isr30, 0x08, 0x8E);
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idt_set_entry(31, (uint32_t)isr31, 0x08, 0x8E);
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}
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void idt_install_syscall(void)
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{
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idt_set_entry(128, (uint32_t)isr128, 0x08, 0xEE);
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}
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