Subversion Repositories or1k

/* Support */

#include <sys/time.h> 

#include "support.h"

#if OR1K

/* Start function, called by reset exception handler.  */

void reset ()

{

  int i = main();

  exit (i);

}

/* return value by making a syscall */

void exit (int i)

{

  asm("l.add r3,r0,%0": : "r" (i));

  asm("l.sys 203");

}

/* activate printf support in simulator */

void printf(const char *fmt, ...)

{

  va_list args;

  va_start(args, fmt);

  asm("l.addi\tr3,%0,0": :"r" (fmt));

  asm("l.addi\tr4,%0,0": :"r" (args));

  asm("l.sys 202");

}

/* print long */

void report(unsigned long value)

{

  unsigned long spr = 0x1234;

  asm("l.mtspr\t\t%0,%1,0x0" : : "r" (spr), "r" (value));

  return;

}

/* just to satisfy linker */

void __main()

{

}

/* start_TIMER                    */

void start_timer(int x)

{

}

/* read_TIMER                    */

/*  Returns a value since started in uS */

unsigned int read_timer(int x)

{

  unsigned long count = 0;

  /* Read the Time Stamp Counter */

/*        asm("simrdtsc %0" :"=r" (count)); */

  asm("l.sys 201");

  return count;

}

/* For writing into SPR. */

void mtspr(unsigned long spr, unsigned long value)

{

  asm("l.mtspr\t\t%0,%1,0": : "r" (spr), "r" (value));

}

/* For reading SPR. */

unsigned long mfspr(unsigned long spr)

{

  unsigned long value;

  asm("l.mfspr\t\t%0,%1,0" : "=r" (value) : "r" (spr));

  return value;

}

#else

void report(unsigned long value)

{

  unsigned long spr = 0x1234;

  printf("l.mtspr %x,%x\n", spr, value);

  return;

}

/* start_TIMER                    */

void start_timer(int tmrnum)

{

  return;

}

/* read_TIMER                    */

/*  Returns a value since started in uS */

unsigned int read_timer(int tmrnum)

{

  struct timeval tv;

  struct timezone tz;

  gettimeofday(&tv, &tz);

  return(tv.tv_sec*1000000+tv.tv_usec);

}

#endif

void *memcpy (void *__restrict dstvoid,

              __const void *__restrict srcvoid, size_t length)

{

  char *dst = dstvoid;

  const char *src = srcvoid;

  while (length--)

    *dst++ = *src++;

  return dst;

}