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fixup intel avx request

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This commit is contained in:
toddouska
2015-03-26 14:26:25 -07:00
parent 4bd5dfe04a
commit 22afce8609
3 changed files with 40 additions and 32 deletions
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56
wolfcrypt/src/random.c
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@@ -771,6 +771,7 @@ static int wc_InitRng_IntelRD()
#if defined(HAVE_HASHDRBG) || defined(NO_RC4)
/* return 0 on success */
static inline int IntelRDseed32(unsigned int *seed)
{
int rdseed; unsigned char ok ;
@@ -783,18 +784,22 @@ static inline int IntelRDseed32(unsigned int *seed)
return 1;
}
/* return 0 on success */
static inline int IntelRDseed32_r(unsigned int *rnd)
{
int i ;
for(i=0; i<INTELRD_RETRY;i++)
if(IntelRDseed32(rnd))return 0 ;
for(i=0; i<INTELRD_RETRY;i++) {
if(IntelRDseed32(rnd) == 0) return 0 ;
}
return 1 ;
}
/* return 0 on success */
static int wc_GenerateSeed_IntelRD(OS_Seed* os, byte* output, word32 sz)
{
(void) os ;
int ret ; byte buff[4] ;
int ret ;
unsigned int rndTmp ;
for( ; sz/4 > 0; sz-=4, output+=4) {
if(IS_INTEL_RDSEED)ret = IntelRDseed32_r((word32 *)output) ;
@@ -804,36 +809,44 @@ static int wc_GenerateSeed_IntelRD(OS_Seed* os, byte* output, word32 sz)
}
if(sz == 0)return 0 ;
if(IS_INTEL_RDSEED)ret = IntelRDseed32_r((word32 *)buff) ;
if(IS_INTEL_RDSEED)ret = IntelRDseed32_r(&rndTmp) ;
else return 1 ;
if(ret)
return 1 ;
XMEMCPY(output, buff, sz) ;
XMEMCPY(output, &rndTmp, sz) ;
return 0;
}
#else
/* return 0 on success */
static inline int IntelRDrand32(unsigned int *rnd)
{
int rdrand; unsigned char ok ;
__asm__ volatile("rdrand %0; setc %1":"=r"(rdrand), "=qm"(ok));
*rnd = rdrand ;
return ok ;
if(ok){
*rnd = rdrand;
return 0 ;
} else
return 1;
}
/* return 0 on success */
static inline int IntelRDrand32_r(unsigned int *rnd)
{
int i ;
for(i=0; i<INTELRD_RETRY;i++)
if(IntelRDrand32(rnd))return 0 ;
for(i=0; i<INTELRD_RETRY;i++) {
if(IntelRDrand32(rnd) == 0) return 0 ;
}
return 1 ;
}
/* return 0 on success */
static int wc_GenerateRand_IntelRD(OS_Seed* os, byte* output, word32 sz)
{
(void) os ;
int ret ; byte buff[4] ;
int ret ;
unsigned int rndTmp;
for( ; sz/4 > 0; sz-=4, output+=4) {
if(IS_INTEL_RDRAND)ret = IntelRDrand32_r((word32 *)output);
@@ -843,11 +856,11 @@ static int wc_GenerateRand_IntelRD(OS_Seed* os, byte* output, word32 sz)
}
if(sz == 0)return 0 ;
if(IS_INTEL_RDRAND)ret = IntelRDrand32_r((word32 *)buff);
if(IS_INTEL_RDRAND)ret = IntelRDrand32_r(&rndTmp);
else return 1 ;
if(ret)
return 1 ;
XMEMCPY(output, buff, sz) ;
XMEMCPY(output, &rndTmp, sz) ;
return 0;
}
#endif /* defined(HAVE_HASHDRBG) || defined(NO_RC4) */
@@ -1145,18 +1158,6 @@ int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
return 0;
}
#elif defined(HAVE_INTEL_RDGEN) && (defined(HAVE_HASHDRBG) || defined(NO_RC4))
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
{
(void) os ;
wc_InitRng_IntelRD() ; /* set cpuid_flags if not yet */
if(IS_INTEL_RDSEED)
return wc_GenerateSeed_IntelRD(NULL, output, sz) ;
else return 1 ;
}
#elif defined(CUSTOM_RAND_GENERATE)
/* Implement your own random generation function
@@ -1192,6 +1193,13 @@ int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
{
int ret = 0;
#if defined(HAVE_INTEL_RDGEN) && (defined(HAVE_HASHDRBG) || defined(NO_RC4))
wc_InitRng_IntelRD() ; /* set cpuid_flags if not yet */
if(IS_INTEL_RDSEED)
return wc_GenerateSeed_IntelRD(NULL, output, sz) ;
#endif
os->fd = open("/dev/urandom",O_RDONLY);
if (os->fd == -1) {
/* may still have /dev/random */