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Use rdtsc() function instead of inline essembler.

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This commit is contained in:
Bruce Evans 1996-04-07 18:16:26 +00:00
parent 4165cacd4f
commit bc4750691c
2 changed files with 4 additions and 12 deletions
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8
sys/i386/isa/random_machdep.c
View File

@ -1,7 +1,7 @@
/*
* random_machdep.c -- A strong random number generator
*
* $Id: random_machdep.c,v 1.4 1995/12/29 08:04:32 markm Exp $
* $Id: random_machdep.c,v 1.5 1996/04/07 17:38:39 bde Exp $
*
* Version 0.95, last modified 18-Oct-95
*
@ -181,11 +181,7 @@ add_timer_randomness(struct random_bucket *r, struct timer_rand_state *state,
#if defined(I586_CPU) || defined(I686_CPU)
if (i586_ctr_rate != 0) {
u_long low, high;
/* RDTSC. */
__asm __volatile(".byte 0x0f,0x31" :"=a" (low), "=d" (high));
num ^= low << 16;
num ^= (u_int32_t) rdtsc() << 16;
r->entropy_count += 2;
} else {
#endif

8
sys/kern/kern_random.c
View File

@ -1,7 +1,7 @@
/*
* random_machdep.c -- A strong random number generator
*
* $Id: random_machdep.c,v 1.4 1995/12/29 08:04:32 markm Exp $
* $Id: random_machdep.c,v 1.5 1996/04/07 17:38:39 bde Exp $
*
* Version 0.95, last modified 18-Oct-95
*
@ -181,11 +181,7 @@ add_timer_randomness(struct random_bucket *r, struct timer_rand_state *state,
#if defined(I586_CPU) || defined(I686_CPU)
if (i586_ctr_rate != 0) {
u_long low, high;
/* RDTSC. */
__asm __volatile(".byte 0x0f,0x31" :"=a" (low), "=d" (high));
num ^= low << 16;
num ^= (u_int32_t) rdtsc() << 16;
r->entropy_count += 2;
} else {
#endif