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From: "Cristiano" <cristiano DOT pi AT NSquipo DOT it>
Newsgroups: comp.os.msdos.djgpp
Subject: Reading the TSC
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Date: 16 Jan 2006 20:00:26 +0100
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

I'm trying to write the Pentium time-stamp counter in a file under MSDOS.
DJGPP says that there is a parsing error. Please, could somebody help me?

#include <stdio.h>

#define RDTSC (llptr) ({ \
__asm__ __volatile__ ( \
        ".byte 0xff; .byte 0x31" \
        : "=A" (llptr) \
        : : "eax" , "edx"); })

int main(void)
{
  FILE *f = fopen("RDTSC.txt", "wb");
  unsigned long tsc[2], *llptr=tsc;

  RDTSC(llptr);

  fprintf(f,"%u",tsc[0]); fclose(f); return 0;
}

Can I use "unsigned long long tsc" instead of "unsigned long tsc[2]"?

Thanks
Cristiano