external/boringssl: sync with upstream.

This change imports the current version of BoringSSL. The only local
change now is that |BORINGSSL_201509| is defined in base.h. This allows
this change to be made without (hopefully) breaking the build.

This change will need https://android-review.googlesource.com/172744 to
be landed afterwards to update a test.

Change-Id: I6d1f463f7785a2423bd846305af91c973c326104

1 files changed, 11 insertions, 10 deletions

diff --git a/src/crypto/rand/hwrand.c b/src/crypto/rand/hwrand.c
index 5f81f09..f0bbccd 100644
--- a/src/crypto/rand/hwrand.c
+++ b/src/crypto/rand/hwrand.c
@@ -15,23 +15,28 @@
 #include <openssl/rand.h>
 
 #include <assert.h>
-#include <stdlib.h>
 #include <string.h>
 
 #include <openssl/cpu.h>
 
+#include "internal.h"
 
-#if defined(OPENSSL_X86_64) && !defined(OPENSSL_NO_ASM)
 
-int CRYPTO_have_hwrand(void) {
-  return (OPENSSL_ia32cap_P[1] & (1u << 30)) != 0;
-}
+#if defined(OPENSSL_X86_64) && !defined(OPENSSL_NO_ASM)
 
 /* These functions are defined in asm/rdrand-x86_64.pl */
 extern int CRYPTO_rdrand(uint8_t out[8]);
 extern int CRYPTO_rdrand_multiple8_buf(uint8_t *buf, size_t len);
 
+static int have_rdrand(void) {
+  return (OPENSSL_ia32cap_P[1] & (1u << 30)) != 0;
+}
+
 int CRYPTO_hwrand(uint8_t *buf, size_t len) {
+  if (!have_rdrand()) {
+    return 0;
+  }
+
   const size_t len_multiple8 = len & ~7;
   if (!CRYPTO_rdrand_multiple8_buf(buf, len_multiple8)) {
     return 0;
@@ -53,12 +58,8 @@ int CRYPTO_hwrand(uint8_t *buf, size_t len) {
 
 #else
 
-int CRYPTO_have_hwrand(void) {
+int CRYPTO_hwrand(uint8_t *buf, size_t len) {
   return 0;
 }
 
-void CRYPTO_hwrand(uint8_t *buf, size_t len) {
-  abort();
-}
-
 #endif