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#include "kapi/interrupts.hpp"
#include "kapi/system.hpp"
#include <kstd/print>
#include <kstd/vector>
#include <array>
#include <cstdint>
namespace kapi::interrupts
{
namespace
{
constexpr auto irq_offset = 32uz;
auto constinit handlers = std::array<kstd::vector<handler *>, 256 - irq_offset>{};
} // namespace
auto enable() -> void
{
asm volatile("sti");
}
auto disable() -> void
{
asm volatile("cli");
}
auto register_handler(std::uint32_t irq_number, handler & handler) -> void
{
if (irq_number < irq_offset)
{
system::panic("[x86_64:CPU] IRQ number must be in range [32, 255].");
}
handlers[irq_number - irq_offset].push_back(&handler);
}
auto unregister_handler(std::uint32_t irq_number, [[maybe_unused]] handler & handler) -> void
{
if (irq_number < irq_offset)
{
system::panic("[x86_64:CPU] IRQ number must be in range [32, 255].");
}
kstd::println("[x86_64:CPU] TODO: support erasure from vector.");
}
auto dispatch(std::uint32_t irq_number) -> status
{
if (irq_number < irq_offset)
{
return status::unhandled;
}
for (auto handler : handlers[irq_number - irq_offset])
{
if (handler && handler->handle_interrupt(irq_number) == status::handled)
{
return status::handled;
}
}
return status::unhandled;
}
} // namespace kapi::interrupts
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