old MSVC versions don't have rdtsc

use _emit instead

Pointed out by Jeremy Cooper <jeremy@baymoo.org>

diff --git a/crypto/rand/rand_win.c b/crypto/rand/rand_win.c
index a688467e022e8b55a366aae996a3cf58624aeb94..7453fe589ea02b87718a06899925ba123e0ba314 100644 (file)
--- a/crypto/rand/rand_win.c
+++ b/crypto/rand/rand_win.c
@@ -582,7 +582,8 @@ static void readtimer(void)
        if (have_tsc) {
          __try {
            __asm {
-             rdtsc
+             _emit 0x0f
+             _emix 0x31
              mov cyclecount, eax
              }
            RAND_add(&cyclecount, sizeof(cyclecount), 1);