/****************************************************************************
 * @(#) Ndless - OS Calls
 *
 * Copyright (C) 2010 by ANNEHEIM Geoffrey and ARMAND Olivier
 * Contact: geoffrey.anneheim@gmail.com / olivier.calc@gmail.com
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * RCSID $Id$
 ****************************************************************************/

#ifndef _OS_H_
#define _OS_H_

#include "common.h"

#ifdef CAS
  #include "os_cas_1.2.2344.h"  
#elif NON_CAS
  #include "os_1.2.2398.h"
#else
  #error You must specify a Nspire hardware (CAS or NON-CAS)
#endif

/** GNU AS */
#ifdef GNU_AS
  .macro oscall address
      mov	lr,pc
      ldr pc,=\address
  .endm

#define _oscall(rettype,funcaddr,...) funcaddr

/** GNU C Compiler */
#else
  #define _oscall(rettype,funcaddr,...) (*((rettype(*)(__VA_ARGS__))(funcaddr)))

  #define NULL ((void*)0)
  typedef enum bool {FALSE = 0, TRUE = 1} BOOL;
  typedef struct{} FILE;
  typedef unsigned long size_t;
#endif

#define fopen             (_oscall(FILE*, fopen_, const char *filename, const char *mode))
#define fread             (_oscall(size_t, fread_, void *ptr, size_t size, size_t nitems, FILE *stream))
#define fwrite            (_oscall(size_t, fwrite_, const void *ptr, size_t size, size_t count, FILE *stream))
#define fclose            (_oscall(int, fclose_, FILE *stream))
#define fseek             (_oscall(int, fseek_, FILE *stream, long int offset, int origin ))
#define ftell             (_oscall(long int, ftell_, FILE *stream))
#define fflush            (_oscall(int, fflush_, FILE *stream))
#define ferror            (_oscall(int, ferror_, FILE *stream))
#define fgets             (_oscall(char *,fgets_, const char *ptr, size_t count, FILE *stream))
#define malloc            (_oscall(void*, malloc_, size_t size))
#define free              (_oscall(void, free_, void *ptr))
#define memset            (_oscall(void*, memset_, void *ptr, int value, size_t num))
#define memchr            (_oscall(void*, memchr_, void *ptr, int value, size_t num))
#define memcpy            (_oscall(void*, memcpy_, void *restrict s1, const void *restrict s2, size_t n))
#define memcmp            (_oscall(int, memcmp_, const void *ptr1, const void *ptr2, size_t num))
#define printf            (_oscall(int __attribute__((__format__(__printf__,1,2))), printf_, const char *format, ...))
#define sprintf           (_oscall(int __attribute__((__format__(__printf__,2,3))), sprintf_, const char *s, const char *format, ...))
#define fprintf           (_oscall(int __attribute__((__format__(__printf__,2,3))), fprintf_, FILE *stream, const char *format, ...))
#define ascii2utf16       (_oscall(void, ascii2utf16_, void *buff, const char *str, int max_size))
#define show_dialog_box2  (_oscall(void, show_dialog_box2_, int undef, const char *title, const char *msg))
#define mkdir             (_oscall(int, mkdir_, const char *path, int mode))
#define rmdir             (_oscall(int, rmdir_, const char *path))
#define chdir             (_oscall(void, chdir_, const char*))
#define set_current_path  (_oscall(void, set_current_path_, const char*))
#define stat              (_oscall(int, stat_, const char *restric path, struct stat *restrict buf))
#define unlink            (_oscall(int, unlink_, const char *))
#define rename            (_oscall(int, rename_, const char *old, const char *new))
//#define _log_rs232        (_oscall(void, log_rs232_, const char* msg, void *param2))
//#define log_rs232(msg)    (_log_rs232(msg "\n", (void*)log_rs232_param2_))
//#define log_rs232_v(msg)  (_log_rs232(msg, (void*)log_rs232_param2_))
//#define printf_rs232      (_oscall(void, printf_rs232_, const char*, ...))
#define power_off         (_oscall(void, power_off_, void))
#define TCT_Local_Control_Interrupts (_oscall(int, TCT_Local_Control_Interrupts_, int newlevel))

#define NU_Get_First        (_oscall(int,  NU_Get_First_, unsigned char* StructDstat, const char* pattern))
#define NU_Get_Next         (_oscall(int,  NU_Get_Next_, unsigned char* StructDstat))
#define NU_Done             (_oscall(void, NU_Done_, unsigned char* StructDstat))
#define NU_Set_Current_Dir  (_oscall(int, NU_Set_Current_Dir_, const char* newdir))
#define NU_Current_Dir      (_oscall(int, NU_Current_Dir_, const char* drive, const char* dirbuffer))
#define read_unaligned_longword       (_oscall(unsigned long,  read_unaligned_longword_, void *ptr ))  // 4 byte longword
#define read_unaligned_word           (_oscall(int,  read_unaligned_word_, void *ptr ))                // 2 byte word

#define strcpy                        (_oscall(char*,  strcpy_, const char *dest, const char *src ))
#define strcat                        (_oscall(char*,  strcat_, const char *dest, const char *src ))
#define strchr                        (_oscall(char*,  strchr_, const char *str, int character ))
#define strpbrk                       (_oscall(char*,  strpbrk_, const char *str1, const char *str2 ))
#define atoi                          (_oscall(int,  atoi_, const char *str))
#define strtoul                       (_oscall(unsigned long,  strtoul_, const char *str,char ** endptr, int base , int *chbase))  // normally set chbase = NULL
#define flash_erase_range             (_oscall(unsigned,  flash_erase_range_, unsigned, unsigned ))

#endif