Skip to content

Various bug fixes #21

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
selfsigned wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Various bug fixes #21

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
56 changes: 12 additions & 44 deletions src/hardware/interrupts/idt.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -50,16 +50,6 @@ static void _handle_exception() {
__asm__ volatile("hlt"); // halt the cpu until shutdown
}

/// @brief handle div by 0 exceptions
/// @param frame stack frame
INTERRUPT void _exception_div0(int_frame *frame) {
WARN_MSG("Div by 0 exception handled\n\t->eip:%p cs:%p eflags:%p sp:%p ss:%p",
frame->eip, frame->cs, frame->eflags, frame->sp, frame->ss);

frame->eip += 2; // go to next instruction (Opcode f7 + f1 -> +2)
return;
}

#define INT_EXCEPTION_HANDLER(N, MSG) \
INTERRUPT void _exception_##N(int_frame *frame) { \
__asm__ volatile("cli"); \
Expand All @@ -77,6 +67,7 @@ INTERRUPT void _exception_div0(int_frame *frame) {
}

// generic exceptions
INT_EXCEPTION_HANDLER(0, DIV BY 0)
INT_EXCEPTION_HANDLER(1, RESERVED)
INT_EXCEPTION_HANDLER(2, NMI Interrupt)
INT_EXCEPTION_HANDLER(3, Breakpoint)
Expand Down Expand Up @@ -123,41 +114,18 @@ INT_EXCEPTION_HANDLER(31, RESERVED)

void idt_init() {
struct idt_gate_desc new_idt[IDT_NB_GATES] = {
[0] = {IDT_ADD_FUNC((uint32_t)(&_exception_div0)),
.access = TRAP_GATE_FLAGS,
.segment_selector = IDT_CODE_SEGMENT_SELECTOR},
// painful
IDT_EXCEPTION(1),
IDT_EXCEPTION(2),
IDT_EXCEPTION(3),
IDT_EXCEPTION(4),
IDT_EXCEPTION(5),
IDT_EXCEPTION(6),
IDT_EXCEPTION(7),
IDT_EXCEPTION(8),
IDT_EXCEPTION(9),
IDT_EXCEPTION(10),
IDT_EXCEPTION(11),
IDT_EXCEPTION(12),
IDT_EXCEPTION(13),
IDT_EXCEPTION(14),
IDT_EXCEPTION(15),
IDT_EXCEPTION(16),
IDT_EXCEPTION(17),
IDT_EXCEPTION(18),
IDT_EXCEPTION(19),
IDT_EXCEPTION(20),
IDT_EXCEPTION(21),
IDT_EXCEPTION(22),
IDT_EXCEPTION(23),
IDT_EXCEPTION(24),
IDT_EXCEPTION(25),
IDT_EXCEPTION(26),
IDT_EXCEPTION(27),
IDT_EXCEPTION(28),
IDT_EXCEPTION(29),
IDT_EXCEPTION(30),
IDT_EXCEPTION(31),
IDT_EXCEPTION(0), IDT_EXCEPTION(1), IDT_EXCEPTION(2),
IDT_EXCEPTION(3), IDT_EXCEPTION(4), IDT_EXCEPTION(5),
IDT_EXCEPTION(6), IDT_EXCEPTION(7), IDT_EXCEPTION(8),
IDT_EXCEPTION(9), IDT_EXCEPTION(10), IDT_EXCEPTION(11),
IDT_EXCEPTION(12), IDT_EXCEPTION(13), IDT_EXCEPTION(14),
IDT_EXCEPTION(15), IDT_EXCEPTION(16), IDT_EXCEPTION(17),
IDT_EXCEPTION(18), IDT_EXCEPTION(19), IDT_EXCEPTION(20),
IDT_EXCEPTION(21), IDT_EXCEPTION(22), IDT_EXCEPTION(23),
IDT_EXCEPTION(24), IDT_EXCEPTION(25), IDT_EXCEPTION(26),
IDT_EXCEPTION(27), IDT_EXCEPTION(28), IDT_EXCEPTION(29),
IDT_EXCEPTION(30), IDT_EXCEPTION(31),
};
memcpy(idt, new_idt, sizeof(idt));

Expand Down