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#ifndef UMKA_H_INCLUDED

#define UMKA_H_INCLUDED

#include 

#include 

#define STDCALL __attribute__((__stdcall__))

#define BDFE_LEN_CP866 304

#define BDFE_LEN_UNICODE 560

#if defined(WIN32) || defined(_WIN32)

    typedef size_t off_t;

    typedef long ssize_t;

#   define PATH_MAX 256

#endif

typedef struct {

    uint32_t left, top, right, bottom;

} rect_t;

typedef struct {

    uint32_t left, top, width, height;

} box_t;

typedef struct {

    uint32_t dr0, dr1, dr2, dr3, dr7;

} dbg_regs_t;

typedef struct {

    uint32_t cpu_usage;

    uint16_t window_stack_position;

    uint16_t window_stack_value;

    uint16_t pad;

    char process_name[12];

    uint32_t memory_start;

    uint32_t used_memory;

    uint32_t pid;

    box_t box;

    uint16_t slot_state;

    uint16_t pad2;

    box_t client_box;

    uint8_t wnd_state;

    uint8_t pad3[1024-71];

} __attribute__((packed)) process_information_t;

_Static_assert(sizeof(process_information_t) == 0x400,

               "must be 0x400 bytes long");

typedef struct {

    box_t box;

    uint32_t cl_workarea;

    uint32_t cl_titlebar;

    uint32_t cl_frames;

    uint8_t z_modif;

    uint8_t fl_wstate;

    uint8_t fl_wdrawn;

    uint8_t fl_redraw;

} __attribute__((packed)) wdata_t;

_Static_assert(sizeof(wdata_t) == 0x20,

               "must be 0x20 bytes long");

typedef struct {

    uint32_t frame;

    uint32_t grab;

    uint32_t work_3d_dark;

    uint32_t work_3d_light;

    uint32_t grab_text;

    uint32_t work;

    uint32_t work_button;

    uint32_t work_button_text;

    uint32_t work_text;

    uint32_t work_graph;

} system_colors_t;

typedef enum {

    DEFAULT_ENCODING,

    CP866,

    UTF16,

    UTF8,

    INVALID_ENCODING,

} fs_enc_t;

typedef enum {

    F70 = 70,

    F80 = 80,

} f70or80_t;

enum {

    ERROR_SUCCESS,

    ERROR_DISK_BASE,

    ERROR_UNSUPPORTED_FS,

    ERROR_UNKNOWN_FS,

    ERROR_PARTITION,

    ERROR_FILE_NOT_FOUND,

    ERROR_END_OF_FILE,

    ERROR_MEMORY_POINTER,

    ERROR_DISK_FULL,

    ERROR_FS_FAIL,

    ERROR_ACCESS_DENIED,

    ERROR_DEVICE,

    ERROR_OUT_OF_MEMORY,

};

typedef struct lhead lhead_t;

struct lhead {

    lhead_t *next;

    lhead_t *prev;

};

typedef struct {

    lhead_t  wait_list;

    uint32_t count;

} mutex_t;

typedef mutex_t rwsem_t;

typedef struct {

    uint32_t flags;

    uint32_t sector_size;

    uint64_t capacity;  // in sectors

} diskmediainfo_t;

typedef struct {

    uintptr_t   pointer;

    uint32_t    data_size;

    uintptr_t   data;

    uint32_t    sad_size;

    uint32_t    search_start;

    uint32_t    sector_size_log;

} disk_cache_t;

typedef struct {

    uint64_t first_sector;

    uint64_t length;    // in sectors

    void *disk;

    void *fs_user_functions;

} partition_t;

typedef struct disk_t disk_t;

typedef struct {

    uint32_t  strucsize;

    STDCALL void (*close)(void *userdata);

    STDCALL void (*closemedia)(void *userdata);

    STDCALL int (*querymedia)(void *userdata, diskmediainfo_t *info);

    STDCALL int (*read)(void *userdata, void *buffer, off_t startsector,

                        size_t *numsectors);

    STDCALL int (*write)(void *userdata, void *buffer, off_t startsector,

                         size_t *numsectors);

    STDCALL int (*flush)(void *userdata);

    STDCALL unsigned int (*adjust_cache_size)(void *userdata,

                                              size_t suggested_size);

} diskfunc_t;

struct disk_t {

    disk_t *next;

    disk_t *prev;

    diskfunc_t *functions;

    const char *name;

    void *userdata;

    uint32_t driver_flags;

    uint32_t ref_count;

    mutex_t media_lock;

    uint8_t media_inserted;

    uint8_t media_used;

    uint16_t padding;

    uint32_t media_ref_count;

    diskmediainfo_t media_info;

    uint32_t num_partitions;

    partition_t **partitions;

    uint32_t cache_size;

    mutex_t cache_lock;

    disk_cache_t sys_cache;

    disk_cache_t app_cache;

};

typedef struct {

    uint32_t attr;

    uint32_t enc;

    uint32_t ctime;

    uint32_t cdate;

    uint32_t atime;

    uint32_t adate;

    uint32_t mtime;

    uint32_t mdate;

    uint64_t size;

    char name[0x7777];  // how to handle this properly? FIXME

} bdfe_t;

typedef struct {

    int32_t status;

    uint32_t count;

} f7080ret_t;

typedef struct {

    uint32_t sf;

    uint64_t offset;

    uint32_t count;

    void *buf;

    union {

        struct {

            uint8_t zero;

            const char *path;

        } __attribute__((packed)) f70;

        struct {

            uint32_t path_encoding;

            const char *path;

        } f80;

    } u;

} __attribute__((packed)) f7080s0arg_t;

typedef struct {

    uint32_t sf;

    uint32_t offset;

    uint32_t encoding;

    uint32_t size;

    void *buf;

    union {

        struct {

            uint8_t zero;

            const char *path;

        } __attribute__((packed)) f70;

        struct {

            uint32_t path_encoding;

            const char *path;

        } f80;

    } u;

} __attribute__((packed)) f7080s1arg_t;

typedef struct {

    uint32_t version;

    uint32_t cnt;

    uint32_t total_cnt;

    uint32_t zeroed[5];

    bdfe_t bdfes[];

} f7080s1info_t;

typedef struct {

    uint32_t sf;

    uint32_t reserved1;

    uint32_t flags;

    uint32_t reserved2;

    void *buf;

    union {

        struct {

            uint8_t zero;

            const char *path;

        } __attribute__((packed)) f70;

        struct {

            uint32_t path_encoding;

            const char *path;

        } f80;

    } u;

} __attribute__((packed)) f7080s5arg_t;

typedef struct {

    uint32_t sf;

    uint32_t flags;

    char *params;

    uint32_t reserved1;

    uint32_t reserved2;

    union {

        struct {

            uint8_t zero;

            const char *path;

        } __attribute__((packed)) f70;

        struct {

            uint32_t path_encoding;

            const char *path;

        } f80;

    } u;

} __attribute__((packed)) f7080s7arg_t;

#define KF_READONLY 0x01

#define KF_HIDDEN   0x02

#define KF_SYSTEM   0x04

#define KF_LABEL    0x08

#define KF_FOLDER   0x10

#define KF_ATTR_CNT 5

#define HASH_SIZE 32

typedef struct {

    uint8_t hash[HASH_SIZE];

    uint8_t opaque[1024-HASH_SIZE];

} hash_context;

typedef struct {

    uint32_t edi;

    uint32_t esi;

    uint32_t ebp;

    uint32_t esp;

    uint32_t ebx;

    uint32_t edx;

    uint32_t ecx;

    uint32_t eax;

} pushad_t;

#define NET_TYPE_ETH  1

#define NET_TYPE_SLIP 2

// Link state

#define ETH_LINK_DOWN    0x0    // Link is down

#define ETH_LINK_UNKNOWN 0x1    // There could be an active link

#define ETH_LINK_FD      0x2    // full duplex flag

#define ETH_LINK_10M     0x4    // 10 mbit

#define ETH_LINK_100M    0x8    // 100 mbit

#define ETH_LINK_1G      0xc    // gigabit

// Ethernet protocol numbers

#define ETHER_PROTO_ARP           0x0608

#define ETHER_PROTO_IPv4          0x0008

#define ETHER_PROTO_IPv6          0xDD86

#define ETHER_PROTO_PPP_DISCOVERY 0x6388

#define ETHER_PROTO_PPP_SESSION   0x6488

// Internet protocol numbers

#define IP_PROTO_IP   0

#define IP_PROTO_ICMP 1

#define IP_PROTO_TCP  6

#define IP_PROTO_UDP  17

#define IP_PROTO_RAW  255

// IP options

#define IP_TOS     1

#define IP_TTL     2

#define IP_HDRINCL 3

// PPP protocol numbers

#define PPP_PROTO_IPv4     0x2100

#define PPP_PROTO_IPV6     0x5780

#define PPP_PROTO_ETHERNET 666

// Protocol family

#define AF_INET4  AF_INET

typedef struct net_device_t net_device_t;

typedef struct {

        void *next;     // pointer to next frame in list

        void *prev;     // pointer to previous frame in list

        net_device_t *device;   // ptr to NET_DEVICE structure

        uint32_t type;  // encapsulation type: e.g. Ethernet

        size_t length;  // size of encapsulated data

        size_t offset;  // offset to actual data (24 bytes for default frame)

        uint8_t data[];

} net_buff_t;

struct net_device_t {

    uint32_t device_type;   // type field

    uint32_t mtu;           // Maximal Transmission Unit

    char *name;             // ptr to 0 terminated string

    // ptrs to driver functions

    STDCALL void (*unload) (void);

    STDCALL void (*reset) (void);

    STDCALL int (*transmit) (net_buff_t *);

    uint64_t bytes_tx;      // statistics, updated by the driver

    uint64_t bytes_rx;

    uint32_t packets_tx;

    uint32_t packets_rx;

    uint32_t link_state;    // link state (0 = no link)

    uint32_t hwacc;         // bitmask stating enabled HW accelerations (offload

                            // engines)

    uint8_t mac[6];

    void *userdata;         // not in kolibri, umka-specific

}; // NET_DEVICE

typedef struct {

    uint32_t ip;

    uint8_t mac[6];

    uint16_t status;

    uint16_t ttl;

} arp_entry_t;

typedef struct acpi_node acpi_node_t;

struct acpi_node {

    uint32_t name;

    int32_t refcount;

    acpi_node_t *parent;

    acpi_node_t *children;

    acpi_node_t *next;

    int32_t type;

};

typedef struct {

    acpi_node_t node;

    uint64_t value;

} kos_node_integer_t;

typedef struct {

    acpi_node_t node;

    acpi_node_t **list;

    size_t el_cnt;

} kos_node_package_t;

__attribute__((__noreturn__)) void

kos_osloop(void);

void

irq0(int signo, void *info_unused, void *context);

void

umka_init(void);

void

i40(void);

uint32_t

kos_time_to_epoch(uint32_t *time);

STDCALL disk_t *

disk_add(diskfunc_t *disk, const char *name, void *userdata, uint32_t flags);

STDCALL void *

disk_media_changed(diskfunc_t *disk, int inserted);

STDCALL void

disk_del(disk_t *disk);

void

hash_oneshot(void *ctx, void *data, size_t len);

extern uint8_t xfs_user_functions[];

extern uint8_t ext_user_functions[];

extern uint8_t fat_user_functions[];

extern uint8_t ntfs_user_functions[];

extern uint8_t kos_ramdisk[2880*512];

disk_t *

kos_ramdisk_init(void);

STDCALL void

kos_set_mouse_data(uint32_t btn_state, int32_t xmoving, int32_t ymoving,

                   int32_t vscroll, int32_t hscroll);

static inline void

umka_mouse_move(int lbheld, int mbheld, int rbheld, int xabs, int32_t xmoving,

                int yabs, int32_t ymoving, int32_t hscroll, int32_t vscroll) {

    uint32_t btn_state = lbheld + (rbheld << 1) + (mbheld << 2) +

                         (yabs << 30) + (xabs << 31);

    kos_set_mouse_data(btn_state, xmoving, ymoving, vscroll, hscroll);

}

STDCALL net_buff_t *

kos_net_buff_alloc(size_t size);

static inline size_t

umka_new_sys_threads(uint32_t flags, void (*entry)(), void *stack) {

    size_t tid;

    __asm__ __inline__ __volatile__ (

        "push %%ebx;"

        "push %%esi;"

        "push %%edi;"

        "call   kos_new_sys_threads;"

        "pop %%edi;"

        "pop %%esi;"

        "pop %%ebx"

        : "=a"(tid)

        : "b"(flags),

          "c"(entry),

          "d"(stack)

        : "memory", "cc");

    return tid;

}

static inline void

kos_acpi_call_name(void *ctx, const char *name) {

    __asm__ __inline__ __volatile__ (

        "pushad;"

        "push   %[name];"

        "push   %[ctx];"

        "call   acpi.call_name;"

        "popad"

        :

        : [ctx] "r"(ctx), [name] "r"(name)

        : "memory", "cc");

}

#define KOS_ACPI_NODE_Uninitialized 1

#define KOS_ACPI_NODE_Integer       2

#define KOS_ACPI_NODE_String        3

#define KOS_ACPI_NODE_Buffer        4

#define KOS_ACPI_NODE_Package       5

#define KOS_ACPI_NODE_OpRegionField 6

#define KOS_ACPI_NODE_IndexField    7

#define KOS_ACPI_NODE_BankField     8

#define KOS_ACPI_NODE_Device        9

extern acpi_node_t *kos_acpi_root;

typedef struct {

    int pew[0x100];

} amlctx_t;

struct pci_dev {

    struct pci_dev *next;

    size_t bus;

    size_t dev;

    size_t fun;

    void *acpi;

    struct pci_dev *children;

    struct pci_dev *parent;

    void *prt;

    size_t is_bridge;

    size_t vendor_id;

    size_t device_id;

    size_t int_pin;

    size_t gsi;

};

extern struct pci_dev *kos_pci_root;

void

kos_acpi_aml_init();

STDCALL void

kos_aml_attach(acpi_node_t *parent, acpi_node_t *node);

STDCALL void

kos_acpi_fill_pci_irqs(void *ctx);

STDCALL amlctx_t*

kos_acpi_aml_new_thread();

STDCALL acpi_node_t*

kos_aml_alloc_node(int32_t type);

STDCALL acpi_node_t*

kos_aml_constructor_integer(void);

STDCALL acpi_node_t*

kos_aml_constructor_package(size_t el_cnt);

STDCALL acpi_node_t*

kos_acpi_lookup_node(acpi_node_t *root, char *name);

STDCALL void

kos_acpi_print_tree(void *ctx);

#define MAX_PCI_DEVICES 256

extern void *kos_acpi_dev_data;

extern size_t kos_acpi_dev_size;

extern void *kos_acpi_dev_next;

STDCALL void*

kos_kernel_alloc(size_t len);

STDCALL void

kos_pci_walk_tree(struct pci_dev *node,

                  STDCALL void* (*test)(struct pci_dev *node, void *arg),

                  STDCALL void* (*clbk)(struct pci_dev *node, void *arg),

                  void *arg);

typedef struct {

    uint32_t value;

    uint32_t errorcode;

} f75ret_t;

typedef struct {

    uint32_t eax;

    uint32_t ebx;

} f76ret_t;

static inline void

umka_stack_init() {

    __asm__ __inline__ __volatile__ (

        "pushad;"

        "call   kos_stack_init;"

        "popad"

        :

        :

        : "memory", "cc");

}

static inline int32_t

kos_net_add_device(net_device_t *dev) {

    int32_t dev_num;

    __asm__ __inline__ __volatile__ (

        "call   net_add_device"

        : "=a"(dev_num)

        : "b"(dev)

        : "ecx", "edx", "esi", "edi", "memory", "cc");

    return dev_num;

}

STDCALL void

kos_window_set_screen(ssize_t left, ssize_t top, ssize_t right, ssize_t bottom,

                      ssize_t proc);

typedef struct {

    int32_t x;

    int32_t y;

    size_t width;

    size_t height;

    size_t bits_per_pixel;

    size_t vrefresh;

    void *current_lfb;

    size_t lfb_pitch;

    rwsem_t win_map_lock;

    uint8_t *win_map;

    size_t win_map_pitch;

    size_t win_map_size;

    void *modes;

    void *ddev;

    void *connector;

    void *crtc;

    void *cr_list_next;

    void *cr_list_prev;

    void *cursor;

    void *init_cursor;

    void *select_cursor;

    void *show_cursor;

    void *move_cursor;

    void *restore_cursor;

    void *disable_mouse;

    size_t mask_seqno;

    void *check_mouse;

    void *check_m_pixel;

    size_t bytes_per_pixel;

} __attribute__((packed)) display_t;

extern display_t kos_display;

typedef struct {

    uint64_t addr;

    uint64_t size;

    uint32_t type;

} e820entry_t;

#define MAX_MEMMAP_BLOCKS 32

typedef struct {

    uint8_t bpp;    // bits per pixel

    uint16_t pitch; // scanline length

    uint8_t pad1[5];

    uint16_t vesa_mode;

    uint16_t x_res;

    uint16_t y_res;

    uint8_t pad2[6];

    uint32_t bank_switch;   // Vesa 1.2 pm bank switch

    void *lfb;  // Vesa 2.0 LFB address

    uint8_t mtrr;   // 0 or 1: enable MTRR graphics acceleration

    uint8_t launcher_start; // 0 or 1: start the first app (right now it's

                            // LAUNCHER) after kernel is loaded

    uint8_t debug_print;    // if nonzero, duplicates debug output to the screen

    uint8_t dma;    // DMA write: 1=yes, 2=no

    uint8_t pci_data[8];

    uint8_t pad3[8];

    uint8_t shutdown_type;  // see sysfn 18.9

    uint8_t pad4[15];

    uint32_t apm_entry; // entry point of APM BIOS

    uint16_t apm_version;   // BCD

    uint16_t apm_flags;

    uint8_t pad5[8];

    uint16_t apm_code_32;

    uint16_t apm_code_16;

    uint16_t apm_data_16;

    uint8_t rd_load_from;   // Device to load ramdisk from, RD_LOAD_FROM_*

    uint8_t pad6[1];

    uint16_t kernel_restart;

    uint16_t sys_disk;  // Device to mount on /sys/, see loader_doc.txt for details

    void *acpi_rsdp;

    char syspath[0x17];

    void *devicesdat_data;

    size_t devicesdat_size;

    uint8_t bios_hd_cnt;    // number of BIOS hard disks

    uint8_t bios_hd[0x80];  // BIOS hard disks

    size_t memmap_block_cnt;    // available physical memory map: number of blocks

    e820entry_t memmap_blocks[MAX_MEMMAP_BLOCKS];

    uint8_t acpi_usage;

} __attribute__((packed)) boot_data_t;

extern boot_data_t kos_boot;

void

umka_cli(void);

void

umka_sti(void);

extern uint8_t coverage_begin[];

extern uint8_t coverage_end[];

typedef struct appobj_t appobj_t;

struct appobj_t {

    uint32_t magic;

    void *destroy;  // internal destructor

    appobj_t *fd;   // next object in list

    appobj_t *bk;   // prev object in list

    uint32_t pid;   // owner id

};

typedef struct {

    uint32_t magic;

    void *destroy;  // internal destructor

    appobj_t *fd;   // next object in list

    appobj_t *bk;   // prev object in list

    uint32_t pid;   // owner id

    uint32_t id;    // event uid

    uint32_t state; // internal flags

    uint32_t code;

    uint32_t pad[5];

} event_t;

typedef struct {

    lhead_t list;

    lhead_t thr_list;

    mutex_t heap_lock;

    void *heap_base;

    void *heap_top;

    uint32_t mem_used;

    void *dlls_list_ptr;

    void *pdt_0_phys;

    void *pdt_1_phys;

    void *io_map_0;

    void *io_map_1;

    void *ht_lock;

    void *ht_free;

    void *ht_next;

    void *htab[(1024-18*4)/4];

    void *pdt_0[1024];

} proc_t;

_Static_assert(sizeof(proc_t) == 0x1400, "must be 0x1400 bytes long");

typedef struct {

    char app_name[11];

    uint8_t pad1[5];

    lhead_t list;                  // +16

    proc_t *process;               // +24

    void *fpu_state;               // +28

    void *exc_handler;             // +32

    uint32_t except_mask;          // +36

    void *pl0_stack;               // +40

    void *cursor;                  // +44

    event_t *fd_ev;                // +48

    event_t *bk_ev;                // +52

    appobj_t *fd_obj;              // +56

    appobj_t *bk_obj;              // +60

    void *saved_esp;               // +64

    uint32_t io_map[2];            // +68

    uint32_t dbg_state;            // +76

    char *cur_dir;                 // +80

    uint32_t wait_timeout;         // +84

    uint32_t saved_esp0;           // +88

    uint32_t wait_begin;           // +92

    int (*wait_test)(void);        // +96

    void *wait_param;              // +100

    void *tls_base;                // +104

    uint32_t event_mask;           // +108

    uint32_t tid;                  // +112

    uint32_t draw_bgr_x;           // +116

    uint32_t draw_bgr_y;           // +120

    uint8_t state;                 // +124

    uint8_t pad2[3];               // +125

    uint8_t *wnd_shape;            // +128

    uint32_t wnd_shape_scale;      // +132

    uint32_t mem_start;            // +136

    uint32_t counter_sum;          // +140

    box_t saved_box;               // +144

    uint32_t *ipc_start;           // +160

    size_t ipc_size;               // +164

    uint32_t occurred_events;      // +168

    uint32_t debugger_slot;        // +172

    uint32_t terminate_protection; // +176

    uint8_t keyboard_mode;         // +180

    uint8_t captionEncoding;       // +181

    uint8_t pad3[2];               // +182

    char *exec_params;             // +184

    void *dbg_event_mem;           // +188

    dbg_regs_t dbg_regs;           // +192

    char *wnd_caption;             // +212

    box_t wnd_clientbox;           // +216

    uint32_t priority;             // +232

    lhead_t in_schedule;           // +236

    uint32_t counter_add;          // +244

    uint32_t cpu_usage;            // +248

    uint32_t pad4;                 // +252

} appdata_t;

_Static_assert(sizeof(appdata_t) == 256, "must be 0x100 bytes long");

typedef struct {

    uint32_t event_mask;

    uint32_t pid;

    uint16_t pad1;

    uint8_t state;

    uint8_t pad2;

    uint16_t pad3;

    uint8_t wnd_number;

    uint8_t pad4;

    uint32_t mem_start;

    uint32_t counter_sum;

    uint32_t counter_add;

    uint32_t cpu_usage;

} taskdata_t;

_Static_assert(sizeof(taskdata_t) == 32, "must be 0x20 bytes long");

#define UMKA_SHELL 1u

#define UMKA_FUSE  2u

#define UMKA_OS    3u

#define MAX_PRIORITY    0 // highest, used for kernel tasks

#define USER_PRIORITY   1 // default

#define IDLE_PRIORITY   2 // lowest, only IDLE thread goes here

#define NR_SCHED_QUEUES 3 // MUST equal IDLE_PRIORYTY + 1

extern appdata_t *kos_scheduler_current[NR_SCHED_QUEUES];

extern uint32_t umka_tool;

extern uint32_t umka_initialized;

extern uint8_t kos_redraw_background;

extern size_t kos_task_count;

extern taskdata_t *kos_task_base;

extern wdata_t kos_window_data[];

extern taskdata_t kos_task_table[];

extern appdata_t kos_slot_base[];

extern uint32_t kos_current_process;

extern appdata_t *kos_current_slot;

extern uint32_t kos_current_slot_idx;

extern void umka_do_change_task(appdata_t *new);

extern void scheduler_add_thread(void);

extern void find_next_task(void);

extern uint8_t kos_lfb_base[];

extern uint16_t kos_win_stack[];

extern uint16_t kos_win_pos[];

extern uint32_t kos_acpi_ssdt_cnt;

extern uint8_t *kos_acpi_ssdt_base[];

extern size_t kos_acpi_ssdt_size[];

extern void *acpi_ctx;

extern uint32_t kos_acpi_usage;

extern uint32_t kos_acpi_node_alloc_cnt;

extern uint32_t kos_acpi_node_free_cnt;

extern uint32_t kos_acpi_count_nodes(void *ctx) STDCALL;

extern disk_t disk_list;

static inline void

umka_scheduler_add_thread(appdata_t *thread, int32_t priority) {

    __asm__ __inline__ __volatile__ (

        "call   do_change_thread"

        :

        : "c"(priority),

          "d"(thread)

        : "memory", "cc");

}

#define MAX_PRIORITY    0

#define USER_PRIORITY   1

#define IDLE_PRIORITY   2

#define NR_SCHED_QUEUES 3

#define SCHEDULE_ANY_PRIORITY 0

#define SCHEDULE_HIGHER_PRIORITY 1

typedef struct {

    appdata_t *appdata;

    taskdata_t *taskdata;

    int same;

} find_next_task_t;

static inline find_next_task_t

umka_find_next_task(int32_t priority) {

    find_next_task_t fnt;

    __asm__ __inline__ __volatile__ (

        "call   find_next_task;"

        "setz   %%al;"

        "movzx  %%eax, %%al"

        : "=b"(fnt.appdata),

          "=D"(fnt.taskdata),

          "=a"(fnt.same)

        : "b"(priority)

        : "memory", "cc");

    return fnt;

}

static inline void

umka_i40(pushad_t *regs) {

    __asm__ __inline__ __volatile__ (

        "push   %%ebp;"

        "mov    %%ebp, %[ebp];"

        "call   i40;"

        "pop    %%ebp"

        : "=a"(regs->eax),

          "=b"(regs->ebx)

        : "a"(regs->eax),

          "b"(regs->ebx),

          "c"(regs->ecx),

          "d"(regs->edx),

          "S"(regs->esi),

          "D"(regs->edi),

          [ebp] "Rm"(regs->ebp)

        : "memory");

}

static inline void

umka_sys_draw_window(size_t x, size_t xsize, size_t y, size_t ysize,

                     uint32_t color, int has_caption, int client_relative,

                     int fill_workarea, int gradient_fill, int movable,

                     uint32_t style, const char *caption) {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(0),

          "b"((x << 16) + xsize),

          "c"((y << 16) + ysize),

          "d"((gradient_fill << 31) + (!fill_workarea << 30)

              + (client_relative << 29) + (has_caption << 28) + (style << 24)

              + color),

          "S"(!movable << 24),

          "D"(caption)

        : "memory");

}

static inline void

umka_sys_set_pixel(size_t x, size_t y, uint32_t color, int invert) {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(1),

          "b"(x),

          "c"(y),

          "d"((invert << 24) + color)

        : "memory");

}

static inline void

umka_sys_write_text(size_t x, size_t y, uint32_t color, int asciiz,

                    int fill_background, int font_and_encoding,

                    int draw_to_buffer, int scale_factor, const char *string,

                    size_t length, uintptr_t background_color_or_buffer) {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(4),

          "b"((x << 16) + y),

          "c"((asciiz << 31) + (fill_background << 30)

              + (font_and_encoding << 28) + (draw_to_buffer << 27)

              + (scale_factor << 24) + color),

          "d"(string),

          "S"(length),

          "D"(background_color_or_buffer)

        : "memory");

}

static inline void

umka_sys_put_image(void *image, size_t xsize, size_t ysize, size_t x,

                   size_t y) {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(7),

          "b"(image),

          "c"((xsize << 16) + ysize),

          "d"((x << 16) + y)

        : "memory");

}

static inline void

umka_sys_button(size_t x, size_t xsize, size_t y, size_t ysize,

                size_t button_id, int draw_button, int draw_frame,

                uint32_t color) {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(8),

          "b"((x << 16) + xsize),

          "c"((y << 16) + ysize),

          "d"((!draw_button << 30) + (!draw_frame << 29) + button_id),

          "S"(color)

        : "memory");

}

static inline void

umka_sys_process_info(int32_t pid, void *param) {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(9),

          "b"(param),

          "c"(pid)

        : "memory");

}

static inline void

umka_sys_window_redraw(int begin_end) {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(12),

          "b"(begin_end)

        : "memory");

}

static inline void

umka_sys_draw_rect(size_t x, size_t xsize, size_t y, size_t ysize,

                   uint32_t color, int gradient) {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(13),

          "b"((x << 16) + xsize),

          "c"((y << 16) + ysize),

          "d"((gradient << 31) + color)

        : "memory");

}

static inline void

umka_sys_get_screen_size(uint32_t *xsize, uint32_t *ysize) {

    uint32_t xysize;

    __asm__ __inline__ __volatile__ (

        "call   i40"

        : "=a"(xysize)

        : "a"(14)

        : "memory");

    *xsize = (xysize >> 16) + 1;

    *ysize = (xysize & 0xffffu) + 1;

}

static inline void

umka_sys_bg_set_size(uint32_t xsize, uint32_t ysize) {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(15),

          "b"(1),

          "c"(xsize),

          "d"(ysize)

        : "memory");

}

static inline void

umka_sys_bg_put_pixel(uint32_t offset, uint32_t color) {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(15),

          "b"(2),

          "c"(offset),

          "d"(color)

        : "memory");

}

static inline void

umka_sys_bg_redraw() {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(15),

          "b"(3)

        : "memory");

}

static inline void

umka_sys_bg_set_mode(uint32_t mode) {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(15),

          "b"(4),

          "c"(mode)

        : "memory");

}

static inline void

umka_sys_bg_put_img(void *image, size_t offset, size_t size) {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(15),

          "b"(5),

          "c"(image),

          "d"(offset),

          "S"(size)

        : "memory");

}

static inline void *

umka_sys_bg_map() {

    void *addr;

    __asm__ __inline__ __volatile__ (

        "call   i40"

        : "=a"(addr)

        : "a"(15),

          "b"(6)

        : "memory");

    return addr;

}

static inline uint32_t

umka_sys_bg_unmap(void *addr) {

    uint32_t status;

    __asm__ __inline__ __volatile__ (

        "call   i40"

        : "=a"(status)

        : "a"(15),

          "b"(7),

          "c"(addr)

        : "memory");

    return status;

}

static inline void

umka_sys_set_cwd(const char *dir) {

    __asm__ __inline__ __volatile__ (

        "call   i40"

        :

        : "a"(30),

          "b"(1),