Add ABI tests for rdrand.
This one is easy. For others we may wish to get in the habit of pulling
assembly declarations into headers.
Bug: 181
Change-Id: I24c774e3c9b1f983585b9828b0783ceddd08f0e7
Reviewed-on: https://boringssl-review.googlesource.com/c/33967
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/crypto/rand_extra/rand_test.cc b/crypto/rand_extra/rand_test.cc
index 9ee3f26..9bc5d97 100644
--- a/crypto/rand_extra/rand_test.cc
+++ b/crypto/rand_extra/rand_test.cc
@@ -14,10 +14,14 @@
#include <openssl/rand.h>
+#include <stdio.h>
+
#include <gtest/gtest.h>
+#include <openssl/cpu.h>
#include <openssl/span.h>
+#include "../test/abi_test.h"
#include "../test/test_util.h"
#if defined(OPENSSL_THREADS)
@@ -28,7 +32,6 @@
#if !defined(OPENSSL_WINDOWS)
#include <errno.h>
-#include <stdio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
@@ -183,4 +186,26 @@
// Draw entropy in parallel with lower concurrency than the previous maximum.
RunConcurrentRands(kFewerThreads);
}
-#endif
+#endif // OPENSSL_THREADS
+
+#if defined(OPENSSL_X86_64) && defined(SUPPORTS_ABI_TEST)
+extern "C" {
+int CRYPTO_rdrand(uint8_t out[8]);
+int CRYPTO_rdrand_multiple8_buf(uint8_t *buf, size_t len);
+} // extern "C"
+
+TEST(RandTest, RdrandABI) {
+ if ((OPENSSL_ia32cap_P[1] & (1u << 30)) == 0) {
+ fprintf(stderr, "rdrand not supported. Skipping.\n");
+ return;
+ }
+
+ uint8_t buf[32];
+ CHECK_ABI(CRYPTO_rdrand, buf);
+ CHECK_ABI(CRYPTO_rdrand_multiple8_buf, nullptr, 0);
+ CHECK_ABI(CRYPTO_rdrand_multiple8_buf, buf, 8);
+ CHECK_ABI(CRYPTO_rdrand_multiple8_buf, buf, 16);
+ CHECK_ABI(CRYPTO_rdrand_multiple8_buf, buf, 24);
+ CHECK_ABI(CRYPTO_rdrand_multiple8_buf, buf, 32);
+}
+#endif // OPENSSL_X86_64 && SUPPORTS_ABI_TEST
