#include "exception.h"
#include "klibc.h"
#include "kthread.h"
#include "vga.h"
#define STR_HELPER(x) #x
#define STR(x) STR_HELPER(x)

// Need GCC > 6
#define DEFINE_INTERRUPT(int_nb)                                                              \
    __attribute__((interrupt)) void print_handler_##int_nb(struct interrupt_frame *frame,     \
                                                           ulong error_code)                  \
    {                                                                                         \
        int intNbInt = int_nb;                                                                \
        VGAPrintf(RED, BLACK, 0, VGA_HEIGHT - 1, "EXCEPTION %d %d", intNbInt, error_code);                      \
        printf("Exception %d (Err %d) at 0x%x\n", int_nb, error_code, frame->eip);            \
        asm("hlt");                                                                           \
    }

DEFINE_INTERRUPT(EXCEPTION_DOUBLE_FAULT)
DEFINE_INTERRUPT(EXCEPTION_DIVIDE_ZERO)
DEFINE_INTERRUPT(EXCEPTION_DEBUG)
DEFINE_INTERRUPT(EXCEPTION_NMI)
DEFINE_INTERRUPT(EXCEPTION_BREAKPOINT)
DEFINE_INTERRUPT(EXCEPTION_OVERFLOW)
DEFINE_INTERRUPT(EXCEPTION_BOUND_RANGE_EXCEEDED)
DEFINE_INTERRUPT(EXCEPTION_INVALID_OPCODE)
DEFINE_INTERRUPT(EXCEPTION_DEVICE_NOT_AVAILABLE)
DEFINE_INTERRUPT(EXCEPTION_COPRO_OVERRUN)
DEFINE_INTERRUPT(EXCEPTION_INVALID_TSS)
DEFINE_INTERRUPT(EXCEPTION_SEGMENT_NOT_PRESENT)
DEFINE_INTERRUPT(EXCEPTION_STACK_SEGMENT_FAULT)
DEFINE_INTERRUPT(EXCEPTION_GENERAL_PROTECTION_FAULT)
DEFINE_INTERRUPT(EXCEPTION_PAGE_FAULT)
DEFINE_INTERRUPT(EXCEPTION_RESERVED_1)
DEFINE_INTERRUPT(EXCEPTION_X87_FP_EXCEPTION)
DEFINE_INTERRUPT(EXCEPTION_ALIGNMENT_CHECK)
DEFINE_INTERRUPT(EXCEPTION_MACHINE_CHECK)
DEFINE_INTERRUPT(EXCEPTION_SIMD_FP)
DEFINE_INTERRUPT(EXCEPTION_VIRTUALIZATION)
DEFINE_INTERRUPT(EXCEPTION_RESERVED_2)
DEFINE_INTERRUPT(EXCEPTION_RESERVED_3)
DEFINE_INTERRUPT(EXCEPTION_RESERVED_4)
DEFINE_INTERRUPT(EXCEPTION_RESERVED_5)
DEFINE_INTERRUPT(EXCEPTION_RESERVED_6)
DEFINE_INTERRUPT(EXCEPTION_RESERVED_7)
DEFINE_INTERRUPT(EXCEPTION_RESERVED_8)
DEFINE_INTERRUPT(EXCEPTION_RESERVED_9)
DEFINE_INTERRUPT(EXCEPTION_RESERVED_10)
DEFINE_INTERRUPT(EXCEPTION_SECURITY)
DEFINE_INTERRUPT(EXCEPTION_RESERVED_11)
// c.f. https://wiki.osdev.org/Paging#Handling
// error_code   bit0: Present ?
//              bit1: Trying to write ?
//              bit2: User page try to access?
__attribute__((interrupt)) void pagefault_handler(struct interrupt_frame *frame,
                                                  ulong error_code)
{
    // A page fault has occurred.
    // The faulting address is stored in the CR2 register.
    uint32_t faulting_address;
    asm volatile("mov %%cr2, %0" : "=r"(faulting_address));

    struct kthread *current = getCurrentThread();
    printf("page fault while in thread %s at 0x%x\n", current->name, faulting_address);
    VGAPrintf(RED, BLACK, 0, VGA_HEIGHT - 1, "PAGE FAULT %d", error_code);
    (void)faulting_address;
    (void)frame;
    (void)error_code;
    for(;;)
        continue;
}