111 lines
5.1 KiB
C++
111 lines
5.1 KiB
C++
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#include "hos_types.h"
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#include "interrupts.h"
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#include "mm/mm.h"
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#include "lang/kio.h"
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#include "sys/pic.h"
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#include "sys/cpu.h"
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extern "C" {
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idtr_t idtr;
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void isr(u8_t int_num, int_stack_t * istack)
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{
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switch (int_num)
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{
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case 0x20: /* timer interrupt */
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(*(u16_t *)CONSOLE_MEMORY)++;
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pic_eoi();
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break;
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case 0x21:
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/* TODO: keyboard hook */
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pic_eoi();
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break;
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default:
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kputs("--------------------------------------------------------------------------------");
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kprintf("Unhandled Interrupt #%d\n", int_num);
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kprintf(" ds: 0x%08x es: 0x%08x fs: 0x%08x gs: 0x%08x\n",
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istack->ds, istack->es, istack->fs, istack->gs);
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kprintf(" eax: 0x%08x ebx: 0x%08x ecx: 0x%08x edx: 0x%08x\n",
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istack->eax, istack->ebx, istack->ecx, istack->edx);
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kprintf(" ebp: 0x%08x esi: 0x%08x edi: 0x%08x eflags: 0x%08x\n",
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istack->ebp, istack->esi, istack->edi, istack->eflags);
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kprintf(" cs: 0x%08x eip: 0x%08x ss: 0x%08x esp: 0x%08x\n",
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istack->cs, istack->eip, istack->ss, istack->esp);
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kprintf(" cr0: 0x%08x cr2: 0x%08x cr3: 0x%08x\n",
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read_cr0(), read_cr2(), read_cr3());
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kprintf(" Error: 0x%08x (%d)\n", istack->error, istack->error);
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kputs("--------------------------------------------------------------------------------");
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kprintf("Halting!\n");
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for (;;)
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;
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break;
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}
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}
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} /* extern "C" */
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void interrupts_bootstrap()
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{
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u32_t idt_phys = mm_page_alloc();
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u32_t idt_virt = mm_early_vpage_alloc();
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mm_map(idt_virt, idt_phys, 0, 1);
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u64_t * idt = (u64_t *) idt_virt;
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idt[0] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_0, 0);
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idt[1] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_1, 0);
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idt[2] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_2, 0);
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idt[3] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_3, 0);
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idt[4] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_4, 0);
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idt[5] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_5, 0);
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idt[6] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_6, 0);
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idt[7] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_7, 0);
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idt[8] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_8, 0);
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idt[9] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_9, 0);
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idt[10] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_10, 0);
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idt[11] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_11, 0);
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idt[12] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_12, 0);
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idt[13] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_13, 0);
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idt[14] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_14, 0);
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idt[15] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_15, 0);
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idt[16] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_16, 0);
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idt[17] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_17, 0);
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idt[18] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_18, 0);
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idt[19] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_19, 0);
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idt[20] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_20, 0);
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idt[21] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_21, 0);
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idt[22] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_22, 0);
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idt[23] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_23, 0);
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idt[24] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_24, 0);
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idt[25] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_25, 0);
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idt[26] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_26, 0);
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idt[27] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_27, 0);
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idt[28] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_28, 0);
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idt[29] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_29, 0);
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idt[30] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_30, 0);
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idt[31] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_31, 0);
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idt[32] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_32, 0);
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idt[33] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_33, 0);
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idt[34] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_34, 0);
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idt[35] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_35, 0);
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idt[36] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_36, 0);
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idt[37] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_37, 0);
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idt[38] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_38, 0);
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idt[39] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_39, 0);
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idt[40] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_40, 0);
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idt[41] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_41, 0);
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idt[42] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_42, 0);
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idt[43] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_43, 0);
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idt[44] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_44, 0);
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idt[45] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_45, 0);
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idt[46] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_46, 0);
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idt[47] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_47, 0);
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idt[48] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_48, 0);
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idt[49] = MAKE_IDT_DESCRIPTOR(KERNEL_CODE_SEGMENT, isr_49, 0);
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idtr.base = idt_phys;
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idtr.limit = 49 * sizeof(idt[0]) - 1;
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__asm__ __volatile__ ("lidt (idtr)");
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}
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