#ifndef __KOS_32_SYS_H__
#define __KOS_32_SYS_H__

#include <newlib.h>
#include <stdint.h>
#include <stddef.h>

#ifdef __cplusplus
extern "C" {
#endif

//#ifdef CONFIG_DEBUF
//  #define DBG(format,...) printf(format,##__VA_ARGS__)
//#else
//  #define DBG(format,...)
//#endif

#define TYPE_3_BORDER_WIDTH  5
#define WIN_STATE_MINIMIZED  0x02
#define WIN_STATE_ROLLED     0x04

typedef  unsigned int color_t;

typedef union __attribute__((packed))
{
    uint32_t val;
    struct
    {
        short  x;
        short  y;
    };
}pos_t;

typedef union __attribute__((packed))
{
    uint32_t val;
    struct
    {
        uint8_t   state;
        uint8_t   code;
        uint16_t  ctrl_key;
    };
}oskey_t;

typedef struct
{
  unsigned      handle;
  unsigned      io_code;
  void          *input;
  int           inp_size;
  void          *output;
  int           out_size;
}ioctl_t;


static inline
void define_button(uint32_t x_w, uint32_t y_h, uint32_t id, uint32_t color)
{
    __asm__ __volatile__(
    "int $0x40"
    ::"a"(8),
      "b"(x_w),
      "c"(y_h),
      "d"(id),
      "S"(color));
};
static inline void DefineButton(void) __attribute__ ((alias ("define_button")));

static inline
uint32_t get_skin_height(void)
{
    uint32_t height;

    __asm__ __volatile__(
    "int $0x40 \n\t"
    :"=a"(height)
    :"a"(48),"b"(4));
    return height;
};
static inline uint32_t GetSkinHeight(void) __attribute__ ((alias ("get_skin_height")));

static inline
void BeginDraw(void)
{
    __asm__ __volatile__(
    "int $0x40" ::"a"(12),"b"(1));
};

static inline
void EndDraw(void)
{
    __asm__ __volatile__(
    "int $0x40" ::"a"(12),"b"(2));
};

static inline void DrawWindow(int x, int y, int w, int h, const char *name,
                       color_t workcolor, uint32_t style)
{

    __asm__ __volatile__(
    "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");
};

#define POS_SCREEN 0
#define POS_WINDOW 1

static inline
pos_t get_mouse_pos(int origin)
{
    pos_t val;

    __asm__ __volatile__(
    "int $0x40 \n\t"
    "rol $16, %%eax"
    :"=a"(val)
    :"a"(37),"b"(origin));
    return val;
}
static inline pos_t GetMousePos(int origin) __attribute__ ((alias ("get_mouse_pos")));

static inline
uint32_t get_mouse_buttons(void)
{
    uint32_t val;

    __asm__ __volatile__(
    "int $0x40"
    :"=a"(val)
    :"a"(37),"b"(2));
    return val;
};
static inline uint32_t GetMouseButtons(void) __attribute__ ((alias ("get_mouse_buttons")));

static inline
uint32_t get_mouse_wheels(void)
{
    uint32_t val;

    __asm__ __volatile__(
    "int $0x40 \n\t"
    :"=a"(val)
    :"a"(37),"b"(7));
    return val;
};
static inline uint32_t GetMouseWheels(void) __attribute__ ((alias ("get_mouse_wheels")));

static inline
uint32_t wait_for_event(uint32_t time)
{
    uint32_t val;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(val)
    :"a"(23), "b"(time));
    return val;
};

static inline uint32_t check_os_event()
{
    uint32_t val;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(val)
    :"a"(11));
    return val;
};

static inline uint32_t get_os_event()
{
    uint32_t val;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(val)
    :"a"(10));
    return val;
};
static inline uint32_t GetOsEvent(void) __attribute__ ((alias ("get_os_event")));

static inline
uint32_t get_tick_count(void)
{
    uint32_t val;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(val)
    :"a"(26),"b"(9));
    return val;
};

static inline
uint64_t get_ns_count(void)
{
    uint64_t val;
    __asm__ __volatile__(
    "int $0x40"
    :"=A"(val)
    :"a"(26), "b"(10));
    return val;
};

static inline
oskey_t get_key(void)
{
    oskey_t val;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(val)
    :"a"(2));
    return val;
}

static inline
uint32_t get_os_button()
{
    uint32_t val;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(val)
    :"a"(17));
    return val>>8;
};

static inline uint32_t get_service(char *name)
{
    uint32_t retval = 0;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(retval)
    :"a"(68),"b"(16),"c"(name)
    :"memory");

    return retval;
};

static inline int call_service(ioctl_t *io)
{
    int retval;

    __asm__ __volatile__(
    "int $0x40"
    :"=a"(retval)
    :"a"(68),"b"(17),"c"(io)
    :"memory","cc");

    return retval;
};


static inline
void draw_line(int xs, int ys, int xe, int ye, color_t color)
{
    __asm__ __volatile__(
    "int $0x40"
    ::"a"(38), "d"(color),
      "b"((xs << 16) | xe),
      "c"((ys << 16) | ye));
}



static inline
void draw_bar(int x, int y, int w, int h, color_t color)
{
    __asm__ __volatile__(
    "int $0x40"
    ::"a"(13), "d"(color),
      "b"((x << 16) | w),
      "c"((y << 16) | h));
}

static inline
void draw_bitmap(void *bitmap, int x, int y, int w, int h)
{
    __asm__ __volatile__(
    "int $0x40"
    ::"a"(7), "b"(bitmap),
      "c"((w << 16) | h),
      "d"((x << 16) | y));
}

static inline
void draw_text_sys(const char *text, int x, int y, int len, color_t color)
{
    __asm__ __volatile__(
    "int $0x40"
    ::"a"(4),"d"(text),
      "b"((x << 16) | y),
      "S"(len),"c"(color)
     :"memory");
}

static inline void yield(void)
{
    __asm__ __volatile__(
    "int $0x40"
    ::"a"(68), "b"(1));
};

static inline void delay(uint32_t time)
{
    __asm__ __volatile__(
    "int $0x40"
    ::"a"(5), "b"(time)
    :"memory");
};

static inline
void *user_alloc(size_t size)
{
    void  *val;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(val)
    :"a"(68),"b"(12),"c"(size));
    return val;
}
static inline void *UserAlloc(size_t size) __attribute__ ((alias ("user_alloc")));

static inline
int user_free(void *mem)
{
    int  val;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(val)
    :"a"(68),"b"(13),"c"(mem));
    return val;
}
static inline int UserFree(void *mem) __attribute__ ((alias ("user_free")));

static inline
int *user_unmap(void *base, size_t offset, size_t size)
{
    int  *val;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(val)
    :"a"(68),"b"(26),"c"(base),"d"(offset),"S"(size));
    return val;
};
static inline int *UserUnmap(void *base, size_t offset, size_t size) __attribute__ ((alias ("user_unmap")));

typedef union
{
    struct
    {
        void   *data;
        size_t  size;
    };
    unsigned long long raw;
}ufile_t;


static inline ufile_t load_file(const char *path)
{
    ufile_t uf;

    __asm__ __volatile__ (
    "int $0x40"
    :"=A"(uf.raw)
    :"a" (68), "b"(27),"c"(path));

    return uf;
};
static inline ufile_t LoadFile(const char *path) __attribute__ ((alias ("load_file")));

static inline int GetScreenSize()
{
    int retval;

    __asm__ __volatile__(
    "int $0x40"
    :"=a"(retval)
    :"a"(61), "b"(1));
    return retval;
}

static inline
uint32_t  load_cursor(void *path, uint32_t flags)
{
    uint32_t  val;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(val)
    :"a"(37), "b"(4), "c"(path), "d"(flags));
    return val;
}
static inline
uint32_t  LoadCursor(void *path, uint32_t flags) __attribute__ ((alias ("load_cursor")));

static inline
uint32_t  set_cursor(uint32_t  cursor)
{
    uint32_t  old;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(old)
    :"a"(37), "b"(5), "c"(cursor));
    return old;
};
static inline uint32_t SetCursor(uint32_t  cursor) __attribute__ ((alias ("set_cursor")));

static inline
int destroy_cursor(uint32_t cursor)
{
    int ret;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(ret)
    :"a"(37), "b"(6), "c"(cursor)
    :"memory");
    return ret;
};
static inline int DestroyCursor(uint32_t cursor) __attribute__ ((alias ("destroy_cursor")));

static inline void get_proc_info(char *info)
{
    __asm__ __volatile__(
    "int $0x40"
    :
    :"a"(9), "b"(info), "c"(-1));
};
static inline void GetProcInfo(char *info) __attribute__ ((alias ("get_proc_info")));

static inline
void* user_realloc(void *mem, size_t size)
{
    void *val;
    __asm__ __volatile__(
    "int $0x40"
    :"=a"(val)
    :"a"(68),"b"(20),"c"(size),"d"(mem)
    :"memory");

    return val;
};
static inline void* UserRealloc(void *mem, size_t size) __attribute__ ((alias ("user_realloc")));

/*--------------------------------------------------------------------------*/
/* Added by ashmew2 when experimenting with newlib and how the binary will be created finally using i586-kos32-* builders */

/* struct dll_proc_entry */
/* { */
/*   char *proc_name; */
/*   void *proc_address; */
/* }; */

/* typedef struct dll_proc_entry* dll_proc_table; */

/* static inline dll_proc_table dll_load(char *path) */
/* { */
/*     void *dll_table; */
/*     __asm__ __volatile__( */
/*     "int $0x40" */
/*     :"=a"(dll_table) */
/*     :"a"(68), "b"(19), "c"(path)); */

/*     return (dll_proc_table) dll_table; */
/* }; */
/* static inline dll_proc_table LoadDLL(char *path) __attribute__ ((alias ("dll_load"))); */

/* void *dll_find_proc(dll_proc_table table, char *proc_name) */
/* { */
/*   int i; */

/*   if(table == NULL) */
/*      return NULL; */
  
/*   for(i = 0; table[i].proc_name && strcmp(proc_name, table[i].proc_name); i++); */
	
/*   if(table[i].proc_name) */
/*     return table[i].proc_address; */
/*   else  */
/*     return NULL; */
/* } */

/* static inline void * DLLFindProc(dll_proc_table table, char *proc_name) __attribute__ ((alias ("dll_find_proc"))); */

/* static inline void board_write_byte(const char ch){ */
/*     __asm__ __volatile__( */
/*     "int $0x40" */
/*     : */
/*     :"a"(63), "b"(1), "c"(ch)); */
/* } */

/* void board_write_str(const char* str){ */
/*   while(*str) */
/*     board_write_byte(*str++); */
/* } */

/*--------------------------------------------------------------------------*/

void *get_resource(void *data, uint32_t id);

struct blit_call
{
    int dstx;
    int dsty;
    int w;
    int h;

    int srcx;
    int srcy;
    int srcw;
    int srch;

    void *bitmap;
    int   stride;
};

static inline void Blit(void *bitmap, int dst_x, int dst_y,
                        int src_x, int src_y, int w, int h,
                        int src_w, int src_h, int stride)
{
    volatile struct blit_call bc;

    bc.dstx = dst_x;
    bc.dsty = dst_y;
    bc.w    = w;
    bc.h    = h;
    bc.srcx = src_x;
    bc.srcy = src_y;
    bc.srcw = src_w;
    bc.srch = src_h;
    bc.stride = stride;
    bc.bitmap = bitmap;

    __asm__ __volatile__(
    "int $0x40"
    ::"a"(73),"b"(0),"c"(&bc.dstx));
};

void* load_library(const char *name);

void* get_proc_address(void *handle, const char *proc_name);

void enumerate_libraries(int (*callback)(void *handle, const char* name,
                                         uint32_t base, uint32_t size, void *user_data),
                         void *user_data);

#ifdef __cplusplus
}
#endif


#endif