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Kernel: Move GDT and IDT assembly to inline assembly

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Bananymous
2022-12-19 11:46:38 +02:00
parent 0bdb01ee04
commit c8866aa88b
5 changed files with 91 additions and 65 deletions
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kernel/arch/i386/IDT.cpp
+74 -32
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@@ -49,52 +49,94 @@ static void (*s_irq_handlers[0xFF])() { nullptr };
Kernel::panic(msg ", CR0={} CR2={} CR3={} CR4={}", cr0, cr2, cr3, cr4); \
}
INTERRUPT_HANDLER(0x00, "Divide error")
INTERRUPT_HANDLER(0x01, "Debug exception")
INTERRUPT_HANDLER(0x02, "Unknown error")
INTERRUPT_HANDLER(0x00, "Division Error")
INTERRUPT_HANDLER(0x01, "Debug")
INTERRUPT_HANDLER(0x02, "Non-maskable Interrupt")
INTERRUPT_HANDLER(0x03, "Breakpoint")
INTERRUPT_HANDLER(0x04, "Overflow")
INTERRUPT_HANDLER(0x05, "Bounds check")
INTERRUPT_HANDLER(0x06, "Invalid opcode")
INTERRUPT_HANDLER(0x07, "Coprocessor not available")
INTERRUPT_HANDLER(0x08, "Double fault")
INTERRUPT_HANDLER(0x09, "Coprocessor segment overrun")
INTERRUPT_HANDLER(0x0a, "Invalid TSS")
INTERRUPT_HANDLER(0x0b, "Segment not present")
INTERRUPT_HANDLER(0x0c, "Stack exception")
INTERRUPT_HANDLER(0x0d, "General protection fault")
INTERRUPT_HANDLER(0x0e, "Page fault")
INTERRUPT_HANDLER(0x0f, "Unknown error")
INTERRUPT_HANDLER(0x10, "Coprocessor error")
INTERRUPT_HANDLER(0x05, "Bound Range Exception")
INTERRUPT_HANDLER(0x06, "Invalid Opcode")
INTERRUPT_HANDLER(0x07, "Device Not Available")
INTERRUPT_HANDLER(0x08, "Double Fault")
INTERRUPT_HANDLER(0x09, "Coprocessor Segment Overrun")
INTERRUPT_HANDLER(0x0A, "Invalid TSS")
INTERRUPT_HANDLER(0x0B, "Segment Not Present")
INTERRUPT_HANDLER(0x0C, "Stack-Segment Fault")
INTERRUPT_HANDLER(0x0D, "Stack-Segment Fault")
INTERRUPT_HANDLER(0x0E, "Page Fault")
INTERRUPT_HANDLER(0x0F, "Unknown Exception 0x0F")
INTERRUPT_HANDLER(0x10, "x87 Floating-Point Exception")
INTERRUPT_HANDLER(0x11, "Alignment Check")
INTERRUPT_HANDLER(0x12, "Machine Check")
INTERRUPT_HANDLER(0x13, "SIMD Floating-Point Exception")
INTERRUPT_HANDLER(0x14, "Virtualization Exception")
INTERRUPT_HANDLER(0x15, "Control Protection Exception")
INTERRUPT_HANDLER(0x16, "Unknown Exception 0x16")
INTERRUPT_HANDLER(0x17, "Unknown Exception 0x17")
INTERRUPT_HANDLER(0x18, "Unknown Exception 0x18")
INTERRUPT_HANDLER(0x19, "Unknown Exception 0x19")
INTERRUPT_HANDLER(0x1A, "Unknown Exception 0x1A")
INTERRUPT_HANDLER(0x1B, "Unknown Exception 0x1B")
INTERRUPT_HANDLER(0x1C, "Hypervisor Injection Exception")
INTERRUPT_HANDLER(0x1D, "VMM Communication Exception")
INTERRUPT_HANDLER(0x1E, "Security Exception")
INTERRUPT_HANDLER(0x1F, "Unkown Exception 0x1F")
#define REGISTER_HANDLER(i) register_interrupt_handler(i, interrupt ## i)
void handle_irq()
extern "C" void handle_irq()
{
uint16_t isr = PIC::get_isr();
if (!isr) {
//kprint("Spurious IRQ\n");
return;
}
uint32_t isr[8];
APIC::GetISR(isr);
uint8_t irq = 0;
for (uint8_t i = 0; i < 16; ++i) {
if (i == 2)
continue;
if (isr & (1 << i)) {
irq = i;
break;
}
}
uint8_t irq = 0;
for (uint8_t i = 0; i < 8; i++)
{
for (uint8_t j = 0; j < 32; j++)
{
if (isr[i] & ((uint32_t)1 << j))
{
irq = 32 * i + j;
goto found;
}
}
}
found:
if (irq == 0)
{
dprintln("Spurious irq");
return;
}
if (s_irq_handlers[irq])
s_irq_handlers[irq]();
else
kprint("no handler for irq {}\n", irq);
Kernel::panic("no handler for irq 0x{2H}\n", irq);
PIC::eoi(irq);
APIC::EOI();
}
extern "C" void handle_irq_common();
asm(
".globl handle_irq_common;"
"handle_irq_common:"
"pusha;"
"pushw %ds;"
"pushw %es;"
"pushw %ss;"
"pushw %ss;"
"popw %ds;"
"popw %es;"
"call handle_irq;"
"popw %es;"
"popw %ds;"
"popa;"
"iret;"
);
namespace IDT
{