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https://github.com/Tom-on64/kern.git
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Tom-on
ff07696dc6
- Made stdio.h work - Moved printFiletable back into kernel.c - TODO: Add stdio.h to all files that should use it (probably next commmit) - Added some more global addresses. There's a memory layout, but i'm not using it - Got cursor to be drawn - Calc program now gets user input
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
#ifndef ISRS_H
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#define ISRS_H
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#include <interrupt/idt.h>
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#include <stdio.h>
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// Exception handlers
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__attribute__ ((interrupt))
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void excp_divideErr(intFrame_t* iframe) { // ISR 0
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print("\x1b[1M[ Division Error ]\n\x1b[8M");
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iframe->eip++;
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}
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__attribute__ ((interrupt))
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void excp_doubleFault(intFrame_t* iframe, uint32_t errCode) { // ISR 8
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print("\x1b[1M[ Double Fault ]\n\x1b[8M"); // Error code should be 0 (TODO: Maybe check if it's != 0?)
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__asm__ volatile ("cli; hlt");
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}
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__attribute__ ((interrupt))
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void excp_pageFault(intFrame_t* iframe, uint32_t errCode) { // ISR 14
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uint32_t badAddress = 0;
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// cr2 should contain invalid address
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__asm__ volatile("movl %%cr2, %0" : "=r"(badAddress));
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print("\x1b[1M[ Page Fault : 0x");
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print(itoa(errCode, 16));
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print(" ] - Tried to access 0x");
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print(itoa(badAddress, 16));
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print(".\n\x1b[8M");
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__asm__ volatile ("cli; hlt");
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}
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__attribute__ ((interrupt))
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void excp_reserved(intFrame_t* iframe) { // ISR 15
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print("\x1b[1M[ Unknown Exception ]\n\x1b[8M");
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__asm__ volatile ("cli; hlt");
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}
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// TODO: Add more (because there's always more)
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// Repetative isr definitions
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void setupExceptions() {
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for (uint8_t i = 0; i < 32; i++) {
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idtSetGate(i, excp_reserved, TRAP_GATE_FLAGS); // Doesn't account for err codes, will just halt anyways
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}
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idtSetGate(0, excp_divideErr, TRAP_GATE_FLAGS);
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idtSetGate(8, excp_doubleFault, TRAP_GATE_FLAGS);
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idtSetGate(14, excp_pageFault, TRAP_GATE_FLAGS);
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idtSetGate(15, excp_reserved, TRAP_GATE_FLAGS);
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}
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#endif
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