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Add true page fault handler.

This commit is contained in:
Drew Galbraith 2023-05-18 13:56:09 -07:00
parent 0d275c72a1
commit 7a3b4d2d42
1 changed files with 49 additions and 1 deletions
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50
zion/interrupt/interrupt.cpp
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@ -38,6 +38,30 @@ InterruptDescriptor CreateDescriptor(void isr(void)) {
};
}
struct InterruptFrame {
uint64_t rax;
uint64_t rbx;
uint64_t rcx;
uint64_t rdx;
uint64_t rsi;
uint64_t rdi;
uint64_t r8;
uint64_t r9;
uint64_t r10;
uint64_t r11;
uint64_t r12;
uint64_t r13;
uint64_t r14;
uint64_t r15;
uint64_t rbp;
uint64_t error_code;
uint64_t rip;
uint64_t cs;
uint64_t eflags;
uint64_t rsp;
uint64_t ss;
};
extern "C" void isr_divide_by_zero();
extern "C" void interrupt_divide_by_zero(void* frame) { panic("DIV0"); }
@ -45,7 +69,31 @@ extern "C" void isr_protection_fault();
extern "C" void interrupt_protection_fault(void* frame) { panic("GP"); }
extern "C" void isr_page_fault();
extern "C" void interrupt_page_fault(void* frame) { panic("PF"); }
extern "C" void interrupt_page_fault(InterruptFrame* frame) {
dbgln("Page Fault:");
uint64_t err = frame->error_code;
if (err & 0x1) {
dbgln("Page Protection");
} else {
dbgln("Page Not Present");
}
if (err & 0x2) {
dbgln("Write");
} else {
dbgln("Read");
}
if (err & 0x8) {
dbgln("Instruction Fetch");
}
uint64_t cr2;
asm volatile("mov %%cr2, %0" : "=r"(cr2));
dbgln("rip: %m", frame->rip);
dbgln("addr: %m", cr2);
panic("PF");
}
void InitIdt() {
gIdt[0] = CreateDescriptor(isr_divide_by_zero);