32 lines
1.1 KiB
C
32 lines
1.1 KiB
C
#include "exception.h"
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#include "vga.h"
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// Need GCC > 6
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__attribute__((interrupt)) void print_handler(struct interrupt_frame *frame, ulong error_code)
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{
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printStringDetails("EXCEPTION", RED, BLACK, 0, VGA_HEIGHT - 1);
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printIntDetails(error_code, RED, BLACK, 11, VGA_HEIGHT - 1);
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(void)frame;
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(void)error_code;
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}
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// c.f. https://wiki.osdev.org/Paging#Handling
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// error_code bit0: Present ?
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// bit1: Trying to write ?
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// bit2: User page try to access?
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__attribute__((interrupt)) void pagefault_handler(struct interrupt_frame *frame,
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ulong error_code)
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{
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// A page fault has occurred.
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// The faulting address is stored in the CR2 register.
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uint32_t faulting_address;
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asm volatile("mov %%cr2, %0" : "=r"(faulting_address));
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printStringDetails("PAGE FAULT", RED, BLACK, 0, VGA_HEIGHT - 1);
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printIntDetails(error_code, RED, BLACK, 11, VGA_HEIGHT - 1);
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(void)faulting_address;
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(void)frame;
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(void)error_code;
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}
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