#ifndef _CONFIG_H
#define _CONFIG_H

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#if defined(__TINYC__)
#pragma pack(1)
#endif

#define DEBUG       1
#define PROFILE     1

#define HAS_TYPES   1
#define HAS_FLOAT   0
/* Support for functions and local variables (stack) */
#define HAS_FUNC    1
/* Speed-up variable look-up with small hash table */
#define HASH_VAR    1

/*
  A stack undeflow can only occur if compiler generates wrong code or VM is faulty.
  Or external ccalls are wrong.
  Should only be enabled for testing and debugging.
*/
#define STACKUNDERFLOWCHECK   0

/* Default length of strings (heap) */
#define DEFSTRINGLEN  16
/* event module: maximal number of events (table) */
#define MAXEVENTS     16
/* maximum length of identifiers */
#define MAXNAMELEN    8
/* maximum number of context tasks. At least 1, typical 2 (0: main program, foreground, 1:command line, background) */
#define MAXTASKS      4
/* Memory alignment of data part of variables (scalars, strings, arrays) */
#define MEMALIGN      2
/* Memory alignment of data part of variables (scalars, strings, arrays) */
/* Total padding  is HAS_LOCK + VARPADDING */
#define VARPADDING    0
/* Variable/Function locking via lock(x) and unlock(x) */
#define HAS_LOCK      1

/* Default stack size */
#define DEFSTACKSIZE  100

/* Defaukt number type, inherited by stacks, too */
#define NUMBER_T      int16_t  

/* Some functions can be inlined, leave empty if these function candidates should not be converted to inline code */
#define INLINE

/* SHM support for debgging and hw-signal simulation? */
#define SHM   1

/* With network module supporting serial communication devices? */
#define HAS_NET 1
/* W/o routing a simplified network module is used providing only down- and up-direction message proapagation with 1 link per node */
#define HAS_NET_ROUTING 0
/* Maximal number of serial ports (1 if HAS_NET and HAS_NET_ROUTING=0) */
#define NUMPORTS        1
/* Port buffer PORTRXBUFFERSIZE:[rx,inp] PORTTXBUFFERSIZE:[tx], one port*/
#define PORTRXBUFFERSIZE      1024
/* only needed if HAS_NET_ROUTING==1 */
#define PORTTXBUFFERSIZE      1024
/* message log buffer (shared by all ports), number of messages, only for HAS_NET_ROUTING==1 */
#define MSGLOGSIZE            32


/** MEMORY ***/
/* Dynamic memory allocation */
#define   MEMALLOC  malloc
#define   MEMCOPY   memcpy
#define   MEMSET    memset
/*
  VM access to communication channels (including stdin,stdout)
  Without or with net module (or only mini net w/o routing).
  
  Entry points are the following operations that must be provided by the host application.
*/
/*
  IO Multiplexer API: These funcions must be provided by host applcation.
  fd >= 0: Real file or serial port IO from net module
  fd <= 0: Virtual IO by VM, must be handled separately
*/
extern int  availbyte(int fd);
extern char inbyte(int fd);
extern int  outbyte(int fd,char x);

#define AVAILBYTE(fd)     availbyte(-(fd+1))
#define INBYTE(fd)        inbyte(-(fd+1))
#define OUTBYTE(fd,x)     outbyte(-(fd+1),x)

/*
  Wake up blocked Loop (if Loop is blocking)
  Unix: self sending of signal
  Actually not needed.
*/
extern void interrupt();
#define INTERRUPT()       interrupt()

/*
  Read/write-through versions w/o using the net module, can be used for single node systems
#define AVAILBYTE(fd)     1
#define INBYTE(fd)        getchar()
#define OUTBYTE(fd,x)     putchar(x)  
*/

#ifndef MILLIS
// millis, relative to program start
/* return system clock in milliseconds  */
#include <sys/time.h>
time_t __millis0;
suseconds_t __micros0;
#define MILLIS() ({ \
  struct timeval t ; \
  gettimeofday ( & t , NULL ) ; \
  unsigned long retval = (int)((t.tv_sec * 1000 + ( t.tv_usec + 500 ) / 1000)-__millis0); \
  retval;\
})
#endif

#ifndef MICROS
#define MICROS()   ({ \
  struct timeval t ; \
  gettimeofday ( & t , NULL ) ; \
  unsigned long retval = t.tv_usec - __micros0; \
  retval;\
})         
#endif

#ifndef TIMEINIT
// timeinit
#define TIMEINIT() {\
  struct timeval t ; \
  gettimeofday ( & t , NULL ) ; \
  __millis0 = t.tv_sec * 1000 + ( t.tv_usec + 500 ) / 1000 ;\
  __micros0 = t.tv_usec;\
}
#endif

extern int iowait();
#define IOINIT  ioinit
#define IOAWAIT iowait


// Only for debugging/monitoring (print_format can be redirected to router/serial port)
// always redirected to stdout
#ifdef DEBUG
  void vLog(const char* fmtStr, ...);
#else
  #define vLog(...)
#endif 


#endif