27b08e9ecf
Just changing preprocessor definitions doesn't exclude the assembly files. BUG=484327 Change-Id: I98453d291a6afb8dc8beb179f931c74301a7f434 Reviewed-on: https://boringssl-review.googlesource.com/4610 Reviewed-by: Adam Langley <agl@google.com>
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/* Copyright (c) 2015, Google Inc.
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
|
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
|
|
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
|
|
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
|
|
|
|
#include <openssl/rand.h>
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <openssl/cpu.h>
|
|
|
|
|
|
#if defined(OPENSSL_X86_64) && !defined(OPENSSL_NO_ASM)
|
|
|
|
int CRYPTO_have_hwrand(void) {
|
|
return (OPENSSL_ia32cap_P[1] & (1u << 30)) != 0;
|
|
}
|
|
|
|
/* CRYPTO_rdrand is defined in asm/rdrand-x86_64.pl */
|
|
extern uint64_t CRYPTO_rdrand(void);
|
|
|
|
void CRYPTO_hwrand(uint8_t *buf, size_t len) {
|
|
while (len >= 8) {
|
|
uint64_t rand = CRYPTO_rdrand();
|
|
memcpy(buf, &rand, sizeof(rand));
|
|
len -= sizeof(rand);
|
|
buf += sizeof(rand);
|
|
}
|
|
|
|
if (len > 0) {
|
|
uint64_t rand = CRYPTO_rdrand();
|
|
memcpy(buf, &rand, len);
|
|
}
|
|
}
|
|
|
|
#else
|
|
|
|
int CRYPTO_have_hwrand(void) {
|
|
return 0;
|
|
}
|
|
|
|
void CRYPTO_hwrand(uint8_t *buf, size_t len) {
|
|
abort();
|
|
}
|
|
|
|
#endif
|