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#include "ed25519-donna-portable-identify.h"
/* ticks - not tested on anything other than x86 */
static uint64_t
get_ticks(void) {
#if defined(CPU_X86) || defined(CPU_X86_64)
#if defined(COMPILER_INTEL)
return _rdtsc();
#elif defined(COMPILER_MSVC)
return __rdtsc();
#elif defined(COMPILER_GCC)
uint32_t lo, hi;
__asm__ __volatile__("rdtsc" : "=a" (lo), "=d" (hi));
return ((uint64_t)lo | ((uint64_t)hi << 32));
#else
#error need rdtsc for this compiler
#endif
#elif defined(OS_SOLARIS)
return (uint64_t)gethrtime();
#elif defined(CPU_SPARC) && !defined(OS_OPENBSD)
uint64_t t;
__asm__ __volatile__("rd %%tick, %0" : "=r" (t));
return t;
#elif defined(CPU_PPC)
uint32_t lo = 0, hi = 0;
__asm__ __volatile__("mftbu %0; mftb %1" : "=r" (hi), "=r" (lo));
return ((uint64_t)lo | ((uint64_t)hi << 32));
#elif defined(CPU_IA64)
uint64_t t;
__asm__ __volatile__("mov %0=ar.itc" : "=r" (t));
return t;
#elif defined(OS_NIX)
timeval t2;
gettimeofday(&t2, NULL);
t = ((uint64_t)t2.tv_usec << 32) | (uint64_t)t2.tv_sec;
return t;
#else
#error need ticks for this platform
#endif
}
#define timeit(x,minvar) \
ticks = get_ticks(); \
x; \
ticks = get_ticks() - ticks; \
if (ticks < minvar) \
minvar = ticks;
#define maxticks 0xffffffffffffffffull
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