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#include "arch/user/main.hpp"
#include "arch/context_switching/syscall/main.hpp"
// TODO: Disallow this import
#include "arch/kernel/cpu/if.hpp"
#include "arch/video/vga/text.hpp"
namespace teachos::arch::user
{
auto main() -> void
{
char constexpr syscall_message[] = "Successfully entered user mode and wrote to VGA buffer via syscall!";
auto const error = context_switching::syscall::syscall(context_switching::syscall::type::WRITE,
{reinterpret_cast<uint64_t>(&syscall_message)});
kernel::cpu::clear_interrupt_flag(); // Causes crash Kernel Code (.text) is not mapped in User mMde
auto test = new int{20}; // Causes crash Heap is not mapped in User Mode
(void)test;
if (!error)
{
// Causes crash vga is not mapped in User Mode
video::vga::text::write("Successfully made a SYSCALL and returned with SYSRETQ!",
video::vga::text::common_attributes::green_on_black);
}
for (;;)
{
}
}
} // namespace teachos::arch::user
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