135 lines
2.5 KiB
C
135 lines
2.5 KiB
C
#include "exceptions.h"
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#include "vga_terminal.h"
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#include "stdlib.h"
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#include "idt.h"
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/* We need to implement those excpetions:
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* 0 Division by zero
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* 3 Breakpoint
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* 6 Invalid opcode
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* 7 Device not available
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* 8 Double Fault
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* 10 Invalid TSS
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* 11 Segment not present
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* 12 Stack segment fault
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* 13 General protection fault
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* 14 Page fault
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*
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*/
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static void hang()
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{
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//x86_print_regs();
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while(1){__asm("nop");}
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}
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void _enter_rescue_mode()
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{
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}
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void enter_rescue_mode(int skip_check)
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{
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if(!skip_check)
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{
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chg_color(VGA_COLOR_LIGHT_CYAN);
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kprintf("Rollback to terminal? (y - yes, n - no): ");
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u8 ans = kgetc();
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if(ans == 'y' || skip_check)
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{
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kputc('\n');
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chg_color(VGA_COLOR_MAGENTA);
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_enter_rescue_mode();
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}
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chg_color(VGA_COLOR_MAGENTA);
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}
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else
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{
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cls();
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kprintf("Terminal reloaded\n");
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_enter_rescue_mode();
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}
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}
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void exception0(int idx)
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{
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kprintf("[Exception] Division by zero\n");
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hang();
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}
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void exception1(int idx)
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{
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kprintf("[Exception] Debug Trap\n");
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hang();
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}
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void exception3(int idx)
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{
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kprintf("[Exception] Debug\n");
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hang();
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}
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void exception6(int idx)
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{
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kprintf("[Exception] Invalid opcode\n");
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hang();
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}
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void exception7(int idx)
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{
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kprintf("[Exception] Device not available\n");
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hang();
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}
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void exception8(int idx)
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{
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kprintf("[Exception] Double fault\n");
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hang();
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}
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void exception10(int idx)
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{
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kprintf("[Exception] Invalid TSS\n");
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hang();
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}
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void exception11(int idx)
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{
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kprintf("[Exception] Segment not present\n");
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hang();
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}
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void exception12(int idx)
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{
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kprintf("[Exception] Stack segment fault\n");
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hang();
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}
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void exception13(int idx)
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{
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kprintf("[Exception] General protection fault\n");
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hang();
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}
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void exception14(int idx)
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{
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kprintf("[Exception] Page fault\n");
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//Do we want to rollback in command interpreter
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hang();
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}
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void install_exceptions()
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{
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idt_setup(_int0_handler,exception0,0,IDT_TYPE_TRAP);
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idt_setup(_int1_handler,exception1,1,IDT_TYPE_TRAP);
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idt_setup(_int3_handler,exception3,3,IDT_TYPE_TRAP);
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idt_setup(_int6_handler,exception6,6,IDT_TYPE_TRAP);
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idt_setup(_int7_handler,exception7,7,IDT_TYPE_TRAP);
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idt_setup(_int8_handler,exception8,8,IDT_TYPE_TRAP);
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//idt_setup(_int9_handler,exception9,9,IDT_TYPE_TRAP);
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idt_setup(_int10_handler,exception10,10,IDT_TYPE_TRAP);
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idt_setup(_int11_handler,exception11,11,IDT_TYPE_TRAP);
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idt_setup(_int12_handler,exception12,12,IDT_TYPE_TRAP);
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idt_setup(_int13_handler,exception13,13,IDT_TYPE_TRAP);
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idt_setup(_int14_handler,exception14,14,IDT_TYPE_TRAP);
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}
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