export const LOG_ALL = -1,
    LOG_NONE = 0,
    LOG_OTHER = 0x0000001,
    LOG_CPU = 0x0000002,
    LOG_FPU = 0x0000004,
    LOG_MEM = 0x0000008,
    LOG_DMA = 0x0000010,
    LOG_IO = 0x0000020,
    LOG_PS2 = 0x0000040,
    LOG_PIC = 0x0000080,
    LOG_VGA = 0x0000100,
    LOG_PIT = 0x0000200,
    LOG_MOUSE = 0x0000400,
    LOG_PCI = 0x0000800,
    LOG_BIOS = 0x0001000,
    LOG_FLOPPY = 0x0002000,
    LOG_SERIAL = 0x0004000,
    LOG_DISK = 0x0008000,
    LOG_RTC = 0x0010000,
    // unused    0x0020000,
    LOG_ACPI = 0x0040000,
    LOG_APIC = 0x0080000,
    LOG_NET = 0x0100000,
    LOG_VIRTIO = 0x0200000,
    LOG_9P = 0x0400000,
    LOG_SB16 = 0x0800000,
    LOG_FETCH = 0x1000000

/**
 * @type {Array<Array<string|number>>}
 */
export const LOG_NAMES: ReadonlyArray<readonly [number, string]> = [
    [1, ''],
    [LOG_CPU, 'CPU'],
    [LOG_DISK, 'DISK'],
    [LOG_FPU, 'FPU'],
    [LOG_MEM, 'MEM'],
    [LOG_DMA, 'DMA'],
    [LOG_IO, 'IO'],
    [LOG_PS2, 'PS2'],
    [LOG_PIC, 'PIC'],
    [LOG_VGA, 'VGA'],
    [LOG_PIT, 'PIT'],
    [LOG_MOUSE, 'MOUS'],
    [LOG_PCI, 'PCI'],
    [LOG_BIOS, 'BIOS'],
    [LOG_FLOPPY, 'FLOP'],
    [LOG_SERIAL, 'SERI'],
    [LOG_RTC, 'RTC'],
    [LOG_ACPI, 'ACPI'],
    [LOG_APIC, 'APIC'],
    [LOG_NET, 'NET'],
    [LOG_VIRTIO, 'VIO'],
    [LOG_9P, '9P'],
    [LOG_SB16, 'SB16'],
    [LOG_FETCH, 'FETC'],
]

export const // flags register bitflags
    FLAG_CARRY = 1,
    FLAG_PARITY = 4,
    FLAG_ADJUST = 16,
    FLAG_ZERO = 64,
    FLAG_SIGN = 128,
    FLAG_TRAP = 256,
    FLAG_INTERRUPT = 512,
    FLAG_DIRECTION = 1024,
    FLAG_OVERFLOW = 2048,
    FLAG_IOPL = (1 << 12) | (1 << 13),
    FLAG_NT = 1 << 14,
    FLAG_RF = 1 << 16,
    FLAG_VM = 1 << 17,
    FLAG_AC = 1 << 18,
    FLAG_VIF = 1 << 19,
    FLAG_VIP = 1 << 20,
    FLAG_ID = 1 << 21,
    // default values of reserved flags bits
    FLAGS_DEFAULT = 1 << 1,
    REG_EAX = 0,
    REG_ECX = 1,
    REG_EDX = 2,
    REG_EBX = 3,
    REG_ESP = 4,
    REG_EBP = 5,
    REG_ESI = 6,
    REG_EDI = 7,
    REG_ES = 0,
    REG_CS = 1,
    REG_SS = 2,
    REG_DS = 3,
    REG_FS = 4,
    REG_GS = 5,
    REG_LDTR = 7 // local descriptor table register

export const // The minimum number of bytes that can be memory-mapped by one device.
    MMAP_BLOCK_BITS = 17,
    MMAP_BLOCK_SIZE = 1 << MMAP_BLOCK_BITS,
    MMAP_MAX = 0x100000000

export const CR0_PG = 1 << 31
export const CR4_PAE = 1 << 5

// https://github.com/qemu/seabios/blob/14221cd86eadba82255fdc55ed174d401c7a0a04/src/fw/paravirt.c#L205-L219

export const FW_CFG_SIGNATURE = 0x00
export const FW_CFG_ID = 0x01
export const FW_CFG_RAM_SIZE = 0x03
export const FW_CFG_NB_CPUS = 0x05
export const FW_CFG_MAX_CPUS = 0x0f
export const FW_CFG_NUMA = 0x0d
export const FW_CFG_FILE_DIR = 0x19

export const FW_CFG_CUSTOM_START = 0x8000
// This value is specific to v86, choosen to hopefully not collide with other indexes
export const FW_CFG_FILE_START = 0xc000
export const FW_CFG_SIGNATURE_QEMU = 0x554d4551

// See same constant in jit.rs
export const WASM_TABLE_SIZE = 900

export const WASM_TABLE_OFFSET = 1024

export const WASM_PAGE_SIZE = 65536

export const MIXER_CHANNEL_LEFT = 0
export const MIXER_CHANNEL_RIGHT = 1
export const MIXER_CHANNEL_BOTH = 2
export const MIXER_SRC_MASTER = 0
export const MIXER_SRC_PCSPEAKER = 1
export const MIXER_SRC_DAC = 2