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[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [common/] [support.c] - Blame information for rev 328

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Line No. Rev Author Line
1 2 marcus.erl
/* Support */
2
 
3 246 julius
#include "spr-defs.h"
4 2 marcus.erl
#include "support.h"
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#include "common.h"
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#include "int.h"
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#include <ctype.h>
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volatile unsigned long timestamp = 0;
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void int_main(void);
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/* return value by making a syscall */
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void exit (int i)
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{
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  asm("l.add r3,r0,%0": : "r" (i));
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  asm("l.nop %0": :"K" (NOP_EXIT));
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  while (1);
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}
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/* activate printf support in simulator */
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void __printf(const char *fmt, ...)
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{
25 140 julius
#if 0
26 2 marcus.erl
  va_list args;
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  va_start(args, fmt);
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  __asm__ __volatile__ ("  l.addi\tr3,%1,0\n \
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                           l.addi\tr4,%2,0\n \
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                           l.nop %0": :"K" (NOP_PRINTF), "r" (fmt), "r"  (args) : "r3", "r4");
31 140 julius
#endif
32 2 marcus.erl
}
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/* print long */
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void report(unsigned long value)
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{
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  asm("l.addi\tr3,%0,0": :"r" (value));
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  asm("l.nop %0": :"K" (NOP_REPORT));
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}
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/* just to satisfy linker */
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void __main(void)
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{
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}
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/* For writing into SPR. */
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void mtspr(unsigned long spr, unsigned long value)
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{
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  asm("l.mtspr\t\t%0,%1,0": : "r" (spr), "r" (value));
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}
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/* For reading SPR. */
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unsigned long mfspr(unsigned long spr)
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{
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  unsigned long value;
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  asm("l.mfspr\t\t%0,%1,0" : "=r" (value) : "r" (spr));
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  return value;
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}
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/* Parses hex or decimal number */
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unsigned long strtoul (const char *str, char **endptr, int base)
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{
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  {
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    unsigned long number = 0;
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    char *pos = (char *) str;
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    char *fail_char = (char *) str;
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  while (isspace(*pos)) pos++;  /* skip leading whitespace */
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  if ((base == 16) && (*pos == '0')) { /* handle option prefix */
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    ++pos;
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    fail_char = pos;
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    if ((*pos == 'x') || (*pos == 'X')) ++pos;
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  }
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  if (base == 0) {               /* dynamic base */
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    base = 10;          /* default is 10 */
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    if (*pos == '0') {
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      ++pos;
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      base -= 2;                /* now base is 8 (or 16) */
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      fail_char = pos;
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      if ((*pos == 'x') || (*pos == 'X')) {
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        base += 8;      /* base is 16 */
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        ++pos;
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      }
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    }
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  }
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  /* check for illegal base */
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  if ( !((base < 2) || (base > 36)) )
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    while (1) {
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      int digit = 40;
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      if ((*pos >= '0') && (*pos <= '9')) {
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          digit = (*pos - '0');
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      } else if (*pos >= 'a') {
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          digit = (*pos - 'a' + 10);
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      } else if (*pos >= 'A') {
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          digit = (*pos - 'A' + 10);
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      } else break;
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      if (digit >= base) break;
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      fail_char = ++pos;
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      number = number * base + digit;
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    }
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  if (endptr) *endptr = fail_char; {
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    return number;
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  }
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  }
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}
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unsigned long get_timer (unsigned long base)
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{
120 140 julius
  /*
121 2 marcus.erl
__printf("%s - %s: %d\n", __FILE__, __FUNCTION__, __LINE__);
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__printf("   timestamp = %.8lx base = %.8lx\n", timestamp, base);
123 140 julius
  */
124 2 marcus.erl
  return (timestamp - base);
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}
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void set_timer (unsigned long t)
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{
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  timestamp = t;
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}
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