85 lines
2 KiB
C
85 lines
2 KiB
C
#include "isr.h"
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#include "idt.h"
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#include "gdt.h"
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#include "io.h"
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#include <stdio.h>
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#include <stddef.h>
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ISRHandler g_ISRHandlers[256];
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static const char* const g_Exceptions[] = {
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"Divide by zero error",
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"Debug",
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"Non-maskable Interrupt",
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"Breakpoint",
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"Overflow",
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"Bound Range Exceeded",
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"Invalid Opcode",
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"Device Not Available",
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"Double Fault",
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"Coprocessor Segment Overrun",
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"Invalid TSS",
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"Segment Not Present",
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"Stack-Segment Fault",
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"General Protection Fault",
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"Page Fault",
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"",
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"x87 Floating-Point Exception",
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"Alignment Check",
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"Machine Check",
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"SIMD Floating-Point Exception",
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"Virtualization Exception",
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"Control Protection Exception ",
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"",
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"",
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"",
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"",
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"",
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"",
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"Hypervisor Injection Exception",
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"VMM Communication Exception",
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"Security Exception",
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""
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};
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void i686_ISR_InitializeGates();
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void i686_ISR_Initialize()
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{
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i686_ISR_InitializeGates();
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for (int i = 0; i < 256; i++)
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i686_IDT_EnableGate(i);
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i686_IDT_DisableGate(0x80);
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}
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void __attribute__((cdecl)) i686_ISR_Handler(Registers* regs)
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{
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if (g_ISRHandlers[regs->interrupt] != NULL)
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g_ISRHandlers[regs->interrupt](regs);
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else if (regs->interrupt >= 32)
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printf("Unhandled interrupt %d!\n", regs->interrupt);
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else
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{
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printf("Unhandled exception %d %s\n", regs->interrupt, g_Exceptions[regs->interrupt]);
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printf(" eax=%x ebx=%x ecx=%x edx=%x esi=%x edi=%x\n",
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regs->eax, regs->ebx, regs->ecx, regs->edx, regs->esi, regs->edi);
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printf(" esp=%x ebp=%x eip=%x eflags=%x cs=%x ds=%x ss=%x\n",
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regs->esp, regs->ebp, regs->eip, regs->eflags, regs->cs, regs->ds, regs->ss);
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printf(" interrupt=%x errorcode=%x\n", regs->interrupt, regs->error);
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printf("KERNEL PANIC!\n");
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i686_Panic();
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}
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}
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void i686_ISR_RegisterHandler(int interrupt, ISRHandler handler)
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{
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g_ISRHandlers[interrupt] = handler;
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i686_IDT_EnableGate(interrupt);
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}
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