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Make the random number generator work on non-x86 platforms.

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Just use the timestamp as the seed. Not as great as what x86 has, but better than nothing.
This commit is contained in:
driver1998
2019-03-20 02:36:13 +08:00
parent fecbec13cf
commit faafb78c6e
1 changed files with 7 additions and 0 deletions
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7
src/random.c
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@@ -18,6 +18,9 @@
#include <stdlib.h> #include <stdlib.h>
#include "random.h" #include "random.h"
#if !(defined(__i386__) || defined (__x86_64__))
#include <time.h>
#endif
uint32_t preconst = 0x6ED9EBA1; uint32_t preconst = 0x6ED9EBA1;
@@ -44,6 +47,7 @@ static __inline__ uint32_t rotr32c (uint32_t x, uint32_t n)
static __inline__ unsigned long long rdtsc(void) static __inline__ unsigned long long rdtsc(void)
{ {
#if defined(__i386__) || defined (__x86_64__)
unsigned hi, lo; unsigned hi, lo;
#ifdef __MSC__ #ifdef __MSC__
__asm { __asm {
@@ -55,6 +59,9 @@ static __inline__ unsigned long long rdtsc(void)
__asm__ __volatile__ ("rdtsc" : "=a"(lo), "=d"(hi)); __asm__ __volatile__ ("rdtsc" : "=a"(lo), "=d"(hi));
#endif #endif
return ( (unsigned long long)lo)|( ((unsigned long long)hi)<<32 ); return ( (unsigned long long)lo)|( ((unsigned long long)hi)<<32 );
#else
return time(NULL);
#endif
} }
static uint32_t RDTSC(void) static uint32_t RDTSC(void)