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getting there...

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slinky55
2026-07-04 00:26:20 -05:00
parent ab5a1ecb6b
commit 0b98ac0273
6 changed files with 49 additions and 61 deletions
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39
kernel/interrupts.c
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@@ -2,8 +2,11 @@
#include <lib/print.h>
#include "process.h"
#include "scheduler.h"
#include "syscall.h"
#include "common.h"
#include "gdt.h"
#include <drivers/pic/pic.h>
#include <drivers/ps2/ps2.h>
@@ -27,13 +30,13 @@ typedef struct __attribute__((packed)) {
} idt_ptr;
typedef struct __attribute__((packed)) {
uint32_t edi, esi, ebp, esp_dummy, ebx, edx, ecx, eax;
uint32_t edi, esi, ebp, dummy, ebx, edx, ecx, eax;
uint32_t int_no;
uint32_t error_code;
uint32_t eip, cs, eflags, useresp, ss;
} registers;
uint32_t eip, cs, eflags, u_esp, u_ss;
} intr_regs_t;
// (interrupts.S)
extern void load_idt(void);
@@ -57,7 +60,9 @@ static void* isr_stub_table[256] = {
static const char* err_messages[32] = {
[0] = "Divide by 0",
[1] = "",
[1] = "Debug",
[4] = "Overflow",
[6] = "Undefined Opcode",
[8] = "",
[13] = "General Protection Fault",
[14] = "Page Fault",
@@ -93,7 +98,7 @@ void init_idt() {
load_idt();
}
void common_interrupt_handler(registers *args) {
void common_interrupt_handler(intr_regs_t *args) {
switch (args->int_no) {
case 0:
case 1:
@@ -111,14 +116,20 @@ void common_interrupt_handler(registers *args) {
case 13:
case 15:
case 16:
kprintf("CPU Error: [%d]%s\n", args->int_no, err_messages[args->int_no]);
asm volatile("cli");
kprintf("\n--- CPU Exception ---\n");
kprintf("Error: [%d] %s\n", args->int_no, err_messages[args->int_no]);
kprintf("Error Code: 0x%x\n", args->error_code);
kprintf("Instruction Pointer: 0x%x\n", args->eip);
kprintf("Stack Pointer: 0x%x\n", args->useresp);
kprintf("Current Stack Pointer: 0x%x\n", (void*)args);
kprintf("EAX: 0x%x\n", args->eax);
kprintf("EFLAGS: 0x%x\n", args->eflags);
kprintf("cr3: 0x%x\n", fetch_cr3());
while(1);
kprintf("Code Segment: 0x%x\n", args->cs);
kprintf("Current cr3: 0x%x\n", fetch_cr3());
kprintf("tss.esp0: 0x%x\n", tss.esp0);
process_t* task = current_task();
kprintf("Task kstack_top: 0x%x\n", task->kstack_top);
asm volatile("hlt");
break;
case 14:{
uint32_t faulting_address;
@@ -127,14 +138,20 @@ void common_interrupt_handler(registers *args) {
kprintf("Faulted Virtual Address: 0x%x\n", faulting_address);
kprintf("Error Code: 0x%x\n", args->error_code);
kprintf("Instruction Pointer: 0x%x\n", args->eip);
kprintf("Stack Pointer: 0x%x\n", args->useresp);
kprintf("Current Stack Pointer: 0x%x\n", (void*)args);
kprintf("EAX: 0x%x\n", args->eax);
kprintf("EFLAGS: 0x%x\n", args->eflags);
kprintf("Code Segment: 0x%x\n", args->cs);
kprintf("Current cr3: 0x%x\n", fetch_cr3());
if (args->cs == 0x1b) {
kprintf("User ESP: 0x%x\n", args->u_esp);
kprintf("User SS: 0x%x\n", args->u_ss);
}
kprintf("Caused by: %s, %s, running in %s mode\n",
(args->error_code & 0x01) ? "Protection Violation" : "Page Not Present",
(args->error_code & 0x02) ? "Write" : "Read",
(args->error_code & 0x04) ? "User" : "Supervisor");
while(1);
asm volatile("hlt");
break;
}
case 33: {