#include "error.h"
#include "console.h"
#include "status.h"

namespace boot {
namespace error {

struct error_code_desc {
    uefi::status code;
    const wchar_t *name;
};

struct error_code_desc error_table[] = {
#define STATUS_ERROR(name, num) { uefi::status::name, L#name },
#define STATUS_WARNING(name, num) { uefi::status::name, L#name },
#include "uefi/errors.inc"
#undef STATUS_ERROR
#undef STATUS_WARNING
    { uefi::status::success, nullptr }
};

const wchar_t *
message(uefi::status status)
{
    int32_t i = -1;
    while (error_table[++i].name != nullptr) {
        if (error_table[i].code == status) return error_table[i].name;
    }

    if (uefi::is_error(status))
        return L"Unknown Error";
    else
        return L"Unknown Warning";
}

[[ noreturn ]] static void
cpu_assert(uefi::status s, const wchar_t *message, size_t line)
{
    asm volatile (
        "movq $0xeeeeeeebadbadbad, %%r8;"
        "movq %0, %%r9;"
        "movq %1, %%r10;"
        "movq %2, %%r11;"
        "movq $0, %%rdx;"
        "divq %%rdx;"
        :
        : "r"((uint64_t)s), "r"(message), "r"(line)
        : "rax", "rdx", "r8", "r9", "r10");
    while (1) asm("hlt");
}

[[ noreturn ]] void
raise(uefi::status status, const wchar_t *message, size_t line)
{
    if(status_line::fail(message, status))
        while (1) asm("hlt");
    else
        cpu_assert(status, message, line);
}


} // namespace error
} // namespace boot

void debug_break()
{
    volatile int go = 0;
    while (!go);
}