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/* Copyright (C) KolibriOS team 2004-2021. All rights reserved. */

/* Distributed under terms of the GNU General Public License    */

/* This file contains basic wrappers over KolibriOS system calls. */

/* See sysfuncs.txt file for details. */

/*

 * This file was created with you in mind. Lest you reinvent the wheel.

 * If for some reason there is not enough wrapper add! I ask you to stick to the same style: snake_case.

 * Structure names must start with "ksys_" and end with "_t".

 * All wrappers must start with the "_ksys_" prefix.

 * I consider it mandatory to place the wrappers in the correct order in the official documentation.

 * Enjoy writing your code :)

*/

// Warning! The end of the file is the old definitions of function/structure names.

// They are for compatibility... Better not to use them. */

#ifndef _KSYS_H_

#define _KSYS_H_

#include 

#define asm_inline __asm__ __volatile__

/*============== General structures ==============*/

#pragma pack(push,1)

typedef struct {

    uint8_t blue;

    uint8_t green;

    uint8_t red;

}rgb_t;

typedef union {

    uint32_t val;

    struct{

        uint8_t hour;

        uint8_t min;

        uint8_t sec;

        uint8_t _zero;

    };

}ksys_time_t;

typedef union {

    uint32_t val;

    struct{

        uint8_t  year;

        uint8_t  month;

        uint8_t  day;

        uint8_t  _zero;

    };

}ksys_date_t;

typedef union{

    uint32_t val;

    struct{

        uint16_t  x;

        uint16_t  y;

    };

}ksys_pos_t;

typedef union ksys_oskey_t{

    uint32_t val;

    struct{

        uint8_t state;

        uint8_t code;

        uint8_t ctrl_key;

    };

}ksys_oskey_t;

typedef struct{

    void *data;

    size_t size;

}ksys_ufile_t;

typedef struct{

    uint32_t            p00;

    union{

        uint64_t        p04;

        struct {

            uint32_t    p04dw;

            uint32_t    p08dw;

        };

    };

    uint32_t            p12;

    union {

        uint32_t        p16;

        const char     *new_name;

        void           *bdfe;

        void           *buf16;

        const void     *cbuf16;

    };

    char                p20;

    const char         *p21;

}ksys70_t;

typedef struct {

    uint32_t attributes;

    uint32_t name_cp;

    ksys_time_t creation_time;

    ksys_date_t creation_date;

    ksys_time_t last_access_time;

    ksys_date_t last_access_date;

    ksys_time_t last_modification_time;

    ksys_date_t last_modification_date;

    unsigned long long size;

    char name[0];

}ksys_bdfe_t;

typedef struct {

  int cpu_usage;             //+0

  int window_pos_info;       //+4

  short int reserved1;       //+8

  char name[12];             //+10

  int memstart;              //+22

  int memused;               //+26

  int pid;                   //+30

  int winx_start;            //+34

  int winy_start;            //+38

  int winx_size;             //+42

  int winy_size;             //+46

  short int slot_info;       //+50

  short int reserved2;       //+52

  int clientx;               //+54

  int clienty;               //+58

  int clientwidth;           //+62

  int clientheight;          //+66

  unsigned char window_state;//+70

  char reserved3[1024-71];   //+71

}ksys_thread_t;

typedef unsigned int ksys_color_t;

typedef struct{

    ksys_color_t frame_area;

    ksys_color_t grab_bar;

    ksys_color_t grab_bar_button;

    ksys_color_t grab_button_text;

    ksys_color_t grab_text;

    ksys_color_t work_area;

    ksys_color_t work_button;

    ksys_color_t work_button_text;

    ksys_color_t work_text;

    ksys_color_t work_graph;

}ksys_colors_table_t;

typedef struct{

    unsigned pid;      // PID of sending thread

    unsigned datalen;  // data bytes

    char     *data;    // data begin

}ksys_ipc_msg;

typedef struct{

    unsigned lock;              // nonzero is locked

    unsigned used;              // used bytes in buffer

    ksys_ipc_msg *data;         // data begin

}ksys_ipc_buffer;

typedef struct {

    char* func_name;

    void* func_ptr;

}ksys_dll_t;

typedef unsigned ksys_drv_hand_t;

typedef struct{

    ksys_drv_hand_t handler;

    unsigned func_num;

    void* in_data_ptr;

    unsigned in_data_size;

    void* out_data_ptr;

    unsigned out_data_size;

}ksys_ioctl_t;

typedef struct{

    char  key[64];

    char path[64];

}ksys_dir_key_t;

#pragma pack(pop)

typedef rgb_t ksys_bitmap_t;

enum KSYS_FS_ERRORS {

    KSYS_FS_ERR_SUCCESS = 0,  // Success

    KSYS_FS_ERR_1       = 1,  // Base and/or partition of a hard disk is not defined (fn21.7 & fn21.8)

    KSYS_FS_ERR_2       = 2,  // Function is not supported for the given file system

    KSYS_FS_ERR_3       = 3,  // Unknown file system

    KSYS_FS_ERR_4       = 4,  // Reserved, is never returned in the current implementation

    KSYS_FS_ERR_5       = 5,  // File not found

    KSYS_FS_ERR_EOF     = 6,  // End of file, EOF

    KSYS_FS_ERR_7       = 7,  // Pointer lies outside of application memory

    KSYS_FS_ERR_8       = 8,  // Disk is full

    KSYS_FS_ERR_9       = 9,  // FAT table is destroyed

    KSYS_FS_ERR_10      = 10, // Access denied

    KSYS_FS_ERR_11      = 11 // Device error

};

enum KSYS_EVENTS {

    KSYS_EVENT_NONE = 0,     /* Event queue is empty */

    KSYS_EVENT_REDRAW = 1,   /* Window and window elements should be redrawn */

    KSYS_EVENT_KEY = 2,      /* A key on the keyboard was pressed */

    KSYS_EVENT_BUTTON = 3,   /* A button was clicked with the mouse */

    KSYS_EVENT_DESKTOP = 5,  /* Desktop redraw finished */

    KSYS_EVENT_MOUSE = 6,    /* Mouse activity (movement, button press) was detected */

    KSYS_EVENT_IPC = 7,      /* Interprocess communication notify */

    KSYS_EVENT_NETWORK = 8,  /* Network event */

    KSYS_EVENT_DEBUG = 9,    /* Debug subsystem event */

    KSYS_EVENT_IRQBEGIN = 16 /* 16..31 IRQ0..IRQ15 interrupt =IRQBEGIN+IRQn */

};

enum KSYS_FILE_ENCODING{

    KSYS_FILE_CP866 =1,

    KSYS_FILE_UTF16LE = 2,

    KSYS_FILE_UTF8 = 3

};

static inline

int _ksys_strcmp(const char * s1, const char * s2 )

{

    while ((*s1) && (*s1 == *s2)){ ++s1; ++s2; }

    return(*(unsigned char*)s1 - *(unsigned char *)s2);

}

/* ####################################################################### */

/* ############### С wrappers for system calls Kolibri OS ################ */

/* ####################################################################### */

/*=============== Function -1 - terminate thread/process ===============*/

static inline

void _ksys_exit(){

    asm_inline("int $0x40"::"a"(-1));

}

/*============== Function 0 - define and draw the window. ==============*/

static inline

void _ksys_create_window(uint32_t x, uint32_t y, uint32_t w, uint32_t h, const char *name, ksys_color_t workcolor, uint32_t style) {

    asm_inline(

        "int $0x40"

        ::"a"(0),

        "b"((x << 16) | ((w-1) & 0xFFFF)),

        "c"((y << 16) | ((h-1) & 0xFFFF)),

        "d"((style << 24) | (workcolor & 0xFFFFFF)),

        "D"(name),

        "S"(0)

        :"memory"

     );

};

/*================ Function 1 - put pixel in the window. ===============*/

static inline

void _ksys_draw_pixel(uint32_t x, uint32_t y, ksys_color_t color){

    asm_inline(

        "int $0x40"

        ::"a"(1), "b"(x), "c"(y), "d"(color)

    );

}

/*============ Function 2 - get the code of the pressed key. ===========*/

static inline

ksys_oskey_t _ksys_get_key(void){

    ksys_oskey_t val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(2)

    );

    return val;

}

/*==================== Function 3 - get system time. ===================*/

static inline

ksys_time_t _ksys_get_time(){

    ksys_time_t c_time;

    asm_inline(

        "int $0x40"

        :"=a"(c_time)

        :"a"(3)

        :"memory"

    );

    return c_time;

}

/*=================== Function 4 - draw text string. ===================*/

static inline

void _ksys_draw_text(const char *text, uint32_t x, uint32_t y, uint32_t len, ksys_color_t color) {

   asm_inline(

        "int $0x40"

        ::"a"(4),"d"(text),

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

        "S"(len),"c"(color)

        :"memory"

    );

}

/*========================= Function 5 - delay. ========================*/

static inline

void _ksys_delay(uint32_t time){

    asm_inline(

        "int $0x40"

        ::"a"(5), "b"(time)

        :"memory"

    );

}

/*=============== Function 8 - define/delete the button. ===============*/

static inline

void _ksys_define_button(uint32_t x, uint32_t y, uint32_t w, uint32_t h, uint32_t id, ksys_color_t color) {

   asm_inline(

        "int $0x40"

        ::"a"(8),

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

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

        "d"(id),

        "S"(color)

    );

};

static inline

void _ksys_delete_button(uint32_t id){

    asm_inline(

        "int $0x40"

        ::"a"(8),"d"(id & 0x00FFFFFF | 0x80000000)

    );

}

/*============ Function 9 - information on execution thread. ===========*/

static inline

int _ksys_thread_info(ksys_thread_t* table, int slot){

    int val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(9), "b"(table), "c"(slot)

        :"memory"

    );

    return val;

}

/*==================== Function 10 - wait for event. ===================*/

static inline

uint32_t _ksys_wait_event(void){

    uint32_t val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(10)

    );

    return val;

}

/*=============== Function 11 - check for event, no wait. ==============*/

static inline

uint32_t _ksys_check_event(void){

    uint32_t val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(11)

    );

    return val;

}

/*=============== Function 12 - begin/end window redraw. ===============*/

static inline

void _ksys_start_draw(){

   asm_inline("int $0x40"::"a"(12),"b"(1));

}

static inline

void _ksys_end_draw(){

    asm_inline("int $0x40" ::"a"(12),"b"(2));

}

/*============ Function 13 - draw a rectangle in the window. ===========*/

static inline

void _ksys_draw_bar(uint32_t x, uint32_t y, uint32_t w, uint32_t h, ksys_color_t color){

    asm_inline(

        "int $0x40"

        ::"a"(13), "d"(color),

        "b"((x << 16) | w),

        "c"((y << 16) | h)

    );

}

/*=================== Function 14 - get screen size. ===================*/

static inline

ksys_pos_t _ksys_screen_size(){

	ksys_pos_t size;

    ksys_pos_t size_tmp;

    asm_inline(

        "int $0x40"

        :"=a"(size_tmp)

        :"a"(14)

    );

    size.x = size_tmp.y;

    size.y = size_tmp.x;

    return size;

}

/*== Function 15, subfunction 1 - set a size of the background image. ==*/

static inline

void _ksys_bg_set_size(uint32_t w, uint32_t h){

    asm_inline(

        "int $0x40"

        ::"a"(15), "b"(1), "c"(w), "d"(h)

    );

}

/*=== Function 15, subfunction 2 - put pixel on the background image. ==*/

static inline

void _ksys_bg_put_pixel(uint32_t x, uint32_t y, uint32_t w, ksys_color_t color){

    asm_inline(

        "int $0x40"

        ::"a"(15), "b"(2), "c"((x+y*w)*3), "d"(color)

    );

}

/*=========== Function 15, subfunction 3 - redraw background. ==========*/

static inline

void _ksys_bg_redraw(void){

    asm_inline(

        "int $0x40"

        ::"a"(15), "b"(3)

    );

}

/*== Function 15, subfunction 4 - set drawing mode for the background. =*/

enum KSYS_BG_MODES{

    KSYS_BG_MODE_PAVE=1,

    KSYS_BG_MODE_STRETCH=2

};

static inline

void _ksys_bg_set_mode(uint32_t mode){

    asm_inline(

        "int $0x40"

        ::"a"(15), "b"(4), "c"(mode)

    );

}

/*===================== Function 15, subfunction 5 =====================*/

/*============ Put block of pixels on the background image. ============*/

static inline

void _ksys_bg_put_bitmap(ksys_bitmap_t* bitmap, size_t bitmap_size, uint32_t x, uint32_t y, uint32_t w){

    asm_inline(

        "int $0x40"

        ::"a"(15), "b"(5), "c"(bitmap), "d"((x+y*w)*3), "S"(bitmap_size)

    );

}

/*===================== Function 15, subfunction 6 =====================*/

/*======= Map background data to the address space of process. ==========*/

static inline

ksys_bitmap_t* _ksys_bg_get_map()

{

    ksys_bitmap_t *bitmap;

    asm_inline(

        "int $0x40"

        :"=a"(bitmap)

        :"a"(15), "b"(6)

    );

    return bitmap;

}

/*===== Function 15, subfunction 7 - close mapped background data. =====*/

static inline

int _ksys_bg_close_map(ksys_bitmap_t* bitmap)

{

    int status; // 1 - OK, 0 - ERROR

    asm_inline(

        "int $0x40"

        :"=a"(status)

        :"a"(15), "b"(7), "c"(bitmap)

    );

    return status;

}

/*===================== Function 15, subfunction 9 =====================*/

/*============= Redraws a rectangular part of the background ===========*/

static inline

void _ksys_bg_redraw_bar(ksys_pos_t angle1, ksys_pos_t angle2)

{

    asm_inline(

        "int $0x40"

        ::"a"(15), "b"(9),

        "c"(angle1.x*(1<<16)+angle2.x),

        "d"(angle1.y*(1<<16)+angle2.y)

    );

}

/*=============== Function 16 - save ramdisk on a floppy. ==============*/

static inline

int _ksys_save_ramdisk_fd(uint32_t floppy_id)

{

    int status; // 0 - OK, 1 - ERROR

    asm_inline(

        "int $0x40"

        :"=a"(status)

        :"a"(16), "b"(floppy_id)

    );

    return status;

}

/*======= Function 17 - get the identifier of the pressed button. ======*/

static inline

uint32_t _ksys_get_button()

{

    unsigned val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(17)

    );

    return val>>8;

}

/*===================== Function 18, subfunction 1 =====================*/

/*============= Make deactive the window of the given thread. ==========*/

static inline

void _ksys_unfocus_window(int slot)

{

    asm_inline(

        "int $0x40"

        ::"a"(18), "b"(1), "c"(slot)

    );

}

/*= Function 18, subfunction 2 - terminate process/thread by the slot. =*/

static inline

void _ksys_kill_by_slot(int slot)

{

    asm_inline(

        "int $0x40"

        ::"a"(18), "b"(2), "c"(slot)

    );

}

/*===================== Function 18, subfunction 3 =====================*/

/*============= Make active the window of the given thread. ============*/

static inline

void _ksys_focus_window(int slot){

    asm_inline(

        "int $0x40"

        ::"a"(18), "b"(3), "c"(slot)

    );

}

/*===================== Function 18, subfunction 4 =====================*/

/*=========== Get counter of idle time units per one second. ===========*/

static inline

uint32_t  _ksys_get_idle(void){

    uint32_t sec;

    asm_inline(

        "int $0x40"

        :"=a"(sec)

        :"a"(18), "b"(4)

    );

    return sec;

}

/*========== Function 18, subfunction 5 - get CPU clock rate. ==========*/

/*================ modulo 2^32 clock ticks = 4GHz ======================*/

static inline

uint32_t _ksys_get_cpu_clock(void){

    uint32_t clock;

    asm_inline(

        "int $0x40"

        :"=a"(clock)

        :"a"(18), "b"(5)

    );

    return clock;

}

/* Function 18, subfunction 6 - save ramdisk to the file on hard drive. */

static inline

uint32_t _ksys_save_ramdisk_hd(const char* ramdisk_path){

    uint32_t fs_err;

    asm_inline(

        "int $0x40"

        :"=a"(fs_err)

        :"a"(18), "b"(6), "c"(ramdisk_path)

    );

    return fs_err;

}

/* Function 18, subfunction 9 - system shutdown with the parameter. */

enum KSYS_SHD_PARAM {

    KSYS_SHD_POWEROFF    = 2,

    KSYS_SHD_REBOOT      = 3,

    KSYS_SHD_RESTART_KRN = 4

};

static inline

void _ksys_shutdown(uint32_t shd_param){

    asm_inline(

        "int $0x40"

        ::"a"(18), "b"(9), "c"(shd_param)

    );

}

/*========= Function 18, subfunction 16 - get size of free RAM. ========*/

static inline

size_t _ksys_get_ram_size(void){

    size_t size;

    asm_inline(

        "int $0x40"

        :"=a"(size)

        :"a"(18), "b"(16)

    );

    return size;

}

/*======== Function 18, subfunction 17 - get full amount of RAM. =======*/

static inline

size_t _ksys_get_full_ram(void){

    size_t size;

    asm_inline(

        "int $0x40"

        :"=a"(size)

        :"a"(18), "b"(17)

    );

    return size;

}

/*===================== Function 18, subfunction 18 ====================*/

/*============= Terminate process/thread by the identifier. ============*/

static inline

void _ksys_kill_by_pid(uint32_t PID)

{

    asm_inline(

        "int $0x40"

        ::"a"(18), "b"(18), "c"(PID)

    );

}

static inline

int _ksys_get_thread_slot(int PID){

    int val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(18), "b"(21), "c"(PID)

    );

    return val;

}

/*============= Function 23 - wait for event with timeout. =============*/

static inline

uint32_t _ksys_wait_event_timeout(uint32_t timeout){

    unsigned val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(23), "b"(timeout)

    );

    return val;

}

/*=== Function 26, subfunction 9 - get the value of the time counter. ==*/

static inline

uint32_t _ksys_get_tick_count(){

    unsigned val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(26),"b"(9)

    );

    return val;

}

/*===================== Function 26, subfunction 10 ====================*/

/*========== Get the value of the high precision time counter. =========*/

static inline

uint64_t  _ksys_get_ns_count(){

    uint64_t val;

    asm_inline(

        "int $0x40"

        :"=A"(val)

        :"a"(26), "b"(10)

    );

    return val;

}

/*=================== Function 29 - get system date. ===================*/

static inline

ksys_date_t _ksys_get_date(){

    ksys_date_t val;

    asm_inline("int $0x40":"=a"(val):"a"(29));

    return val;

}

/*===========+ Function 30 - work with the current folder.==============*/

/*--------- Subfunction 1 - set current folder for the thread. ---------*/

static inline

void _ksys_setcwd(char* dir){

    asm_inline(

        "int $0x40"

        ::"a"(30), "b"(1), "c"(dir)

    );

}

/*--------- Subfunction 2 - get current folder for the thread. ---------*/

static inline

int _ksys_getcwd(char* buf, int bufsize){

    register int val;

    asm_inline(

        "int $0x40"

        :"=a"(val):"a"(30), "b"(2), "c"(buf), "d"(bufsize)

    );

    return val;

}

/* ---- Subfunction 3 - install the add.system directory for the kernel ------*/

static inline

int _ksys_set_kernel_dir(ksys_dir_key_t *table){

    register int val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(30), "b"(3), "c"(table)

        :"memory"

    );

    return val;

}

/*=================== Function 37 - work with mouse. ===================*/

enum KSYS_MOUSE_POS{

    KSYS_MOUSE_SCREEN_POS = 0,

    KSYS_MOUSE_WINDOW_POS = 1

};

static inline

ksys_pos_t _ksys_get_mouse_pos(int origin){

    ksys_pos_t pos;

    asm_inline(

        "int $0x40 \n\t"

        "rol $16, %%eax"

        :"=a"(pos)

        :"a"(37),"b"(origin)

    );

    return pos;

}

static inline

uint32_t _ksys_get_mouse_buttons(void){ // subfunction 2 - states of the mouse buttons

    uint32_t val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(37),"b"(2)

    );

    return val;

}

static inline

uint32_t _ksys_get_mouse_eventstate(void){   // subfunction 3 - states and events of the mouse buttons

    uint32_t val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(37),"b"(3)

    );

    return val;

}

static inline

uint32_t _ksys_load_cursor(void *path, uint32_t flags) { // subfunction 4 - load cursor

    uint32_t val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(37), "b"(4), "c"(path), "d"(flags)

        :"memory"

    );

    return val;

}

static inline

uint32_t _ksys_set_cursor(uint32_t cursor){ // subfunction 5 - set curso

    uint32_t old;

    asm_inline(

        "int $0x40"

        :"=a"(old)

        :"a"(37), "b"(5), "c"(cursor)

    );

    return old;

}

static inline

int _ksys_delete_cursor(uint32_t cursor){ // subfunction 6 - delete curso

    int ret;

    asm_inline(

        "int $0x40"

        :"=a"(ret)

        :"a"(37), "b"(6), "c"(cursor)

        :"memory"

    );

    return ret;

}

static inline

uint32_t _ksys_get_mouse_wheels(void)  // subfunction 7 - get scroll data

{

    uint32_t val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(37),"b"(7)

    );

    return val;

}

/*=========== Function 40 - set the mask for expected events. ==========*/

enum KSYS_EVENT_MASK{

    KSYS_EVM_REDRAW = 1,

    KSYS_EVM_KEY    = 2,

    KSYS_EVM_BUTTON = 4,

    KSYS_EVM_EXIT   = 8,

    KSYS_EVM_BACKGROUND = 16,

    KSYS_EVM_MOUSE      = 32,

    KSYS_EVM_IPC        = 64,

    KSYS_EVM_STACK      = 128,

    KSYS_EVM_DEBUG      = 256,

    KSYS_EVM_STACK2     = 512,

    KSYS_EVM_MOUSE_FILTER  = 0x80000000,

    KSYS_EVM_CURSOR_FILTER = 0x40000000,

};

static inline

uint32_t _ksys_set_event_mask(uint32_t mask){

    unsigned val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(40), "b"(mask)

    );

    return val;

}

/*====================== Function 38 - draw line. ======================*/

static inline

void _ksys_draw_line(int xs, int ys, int xe, int ye, ksys_color_t color)

{

    asm_inline(

        "int $0x40"

        ::"a"(38), "d"(color),

        "b"((xs << 16) | xe),

        "c"((ys << 16) | ye)

    );

}

/*============= Function 47 - draw a number in the window. =============*/

static inline

void _ksys_draw_number(int number, int x, int y, int len, ksys_color_t color){

    unsigned fmt;

    fmt = len << 16 | 0x80000000; // no leading zeros + width

    asm_inline(

        "int $0x40"

        ::"a"(47), "b"(fmt), "c"(number), "d"((x << 16) | y), "S"(color)

    );

}

static inline

void _ksys_draw_number_bg(unsigned number, int x, int y, int len, ksys_color_t color, ksys_color_t bg){

    unsigned fmt;

    fmt = len << 16 | 0x80000000; // no leading zeros + width

    asm_inline(

        "int $0x40"

        ::"a"(47), "b"(fmt), "c"(number), "d"((x << 16) | y), "S"(color), "D"(bg)

    );

}

/*====== Function 48, subfunction 3 - get standard window colors. ======*/

static inline

void _ksys_get_system_colors(ksys_colors_table_t *color_table)

{

    asm_inline(

       "int $0x40"

        ::"a"(48),"b"(3),"c"(color_table),"d"(40)

    );

}

/*============ Function 48, subfunction 4 - get skin height. ===========*/

static inline

uint32_t _ksys_get_skin_height(){

    unsigned height;

    asm_inline(

        "int $0x40"

        :"=a"(height)

        :"a"(48),"b"(4)

    );

    return height;

}

/*==================== Function 51 - create thread. ====================*/

static inline

int _ksys_start_thread(void* thread_entry, void* stack_top){

    int val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(51), "b"(1), "c"(thread_entry), "d"(stack_top)

    );

    return val;

}

/*==================== Function 54, subfunction 0 ======================*/

/*============== Get the number of slots in the clipboard. =============*/

enum KSYS_CLIP_ENCODING{

    KSYS_CLIP_UTF8 = 0,

    KSYS_CLIP_CP866 = 1,

    KSYS_CLIP_CP1251 = 2

};

enum KSYS_CLIP_TYPES{

    KSYS_CLIP_TEXT = 0,

    KSYS_CLIP_IMAGE = 1,

    KSYS_CLIP_RAW = 2

};

static inline

int _ksys_clip_num(){

    unsigned val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(54), "b"(0)

    );

    return val;

}

/*==================== Function 54, subfunction 1 ======================*/

/*================= Read the data from the clipboard. ==================-*/

static inline

char* _ksys_clip_get(int n) {  // returned buffer must be freed by _ksys_free()

    char* val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(54), "b"(1), "c"(n)

    );

    return val;

}

/*==================== Function 54, subfunction 2 ======================*/

/*================= Write the data to the clipboard. ===================*/

static inline

int _ksys_clip_set(int n, char *buffer){

    unsigned val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(54), "b"(2), "c"(n), "d"(buffer)

        :"memory"

    );

    return val;

}

/*===================== Function 54, subfunction 3 =====================*/

/*================ Delete the last slot in the clipboard ===============*/

static inline

int _ksys_clip_pop(){

    unsigned val;

    asm_inline (

        "int $0x40"

        :"=a"(val)

        :"a"(54), "b"(3)

    );

    return val;

}

/*===================== Function 54, subfunction 4 =====================*/

/*===================== Alarm reset the lock buffer ====================*/

static inline

int _ksys_clip_unlock(){

    unsigned val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(54), "b"(4)

    );

    return val;

}

/*============== Function 63 - work with the debug board. ==============*/

static inline

void _ksys_debug_putc(char c){

    asm_inline("int $0x40"::"a"(63), "b"(1), "c"(c));

}

static inline

void _ksys_debug_puts(char *s){

    unsigned i=0;

    while (*(s+i)){

        asm_inline ("int $0x40"::"a"(63), "b"(1), "c"(*(s+i)));

        i++;

    }

}

/*========= Function 67 - change position/sizes of the window. =========*/

static inline

void _ksys_change_window(int new_x, int new_y, int new_w, int new_h){

    asm_inline(

        "int $0x40"

        ::"a"(67), "b"(new_x), "c"(new_y), "d"(new_w),"S"(new_h)

    );

}

/*======== Function 68, subfunction 12 - allocate memory block. ========*/

static inline

void* _ksys_alloc(size_t size){

    void  *val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(68),"b"(12),"c"(size)

    );

    return val;

}

/*========== Function 68, subfunction 13 - free memory block. ==========*/

static inline

int _ksys_free(void *mem){

    int val;

    asm_inline(

        "int $0x40"

        :"=a"(val)

        :"a"(68),"b"(13),"c"(mem)

    );