fips: add generic self tests for non-x86 architectures

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>

fips/Makefile.am

@@ -30,7 +30,8 @@
 src_include     += -I $(srcdir)/fips
 extern_hdrs     += include/isal_crypto_api.h include/aes_cbc_internal.h include/aes_xts.h include/aes_keyexp.h include/sha1_mb.h include/sha256_mb.h
 
-lsrc            += fips/self_tests.c
+lsrc_x86_64     += fips/self_tests.c
+lsrc_aarch64    += fips/self_tests_generic.c
 lsrc            += fips/aes_self_tests.c
 lsrc            += fips/sha_self_tests.c
 

fips/self_tests_generic.c

@@ -0,0 +1,89 @@
+/**********************************************************************
+  Copyright(c) 2024 Intel Corporation All rights reserved.
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions
+  are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in
+      the documentation and/or other materials provided with the
+      distribution.
+    * Neither the name of Intel Corporation nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**********************************************************************/
+
+#include "isal_crypto_api.h"
+#include "internal_fips.h"
+
+#ifdef FIPS_MODE
+#include <stdatomic.h>
+#include <unistd.h>
+#define SLEEP(x) usleep(x)
+#define TIME     1 // 1 microsecond
+
+#define SELF_TEST_DONE_AND_OK   0
+#define SELF_TEST_DONE_AND_FAIL 1
+#define SELF_TEST_NOT_DONE      2
+#define SELF_TEST_RUNNING       3
+
+int
+isal_self_tests(void)
+{
+        static atomic_int self_tests_status = SELF_TEST_NOT_DONE;
+        int self_tests_not_done = SELF_TEST_NOT_DONE;
+
+        if (atomic_load(&self_tests_status) == SELF_TEST_DONE_AND_OK)
+                return 0;
+
+        if (atomic_load(&self_tests_status) == SELF_TEST_DONE_AND_FAIL)
+                return ISAL_CRYPTO_ERR_SELF_TEST;
+
+        if (atomic_compare_exchange_strong(&self_tests_status, &self_tests_not_done,
+                                           SELF_TEST_RUNNING)) {
+                if (_aes_self_tests() != 0) {
+                        atomic_store(&self_tests_status, SELF_TEST_DONE_AND_FAIL);
+                        return ISAL_CRYPTO_ERR_SELF_TEST;
+                }
+                if (_sha_self_tests() != 0) {
+                        atomic_store(&self_tests_status, SELF_TEST_DONE_AND_FAIL);
+                        return ISAL_CRYPTO_ERR_SELF_TEST;
+                }
+                atomic_store(&self_tests_status, SELF_TEST_DONE_AND_OK);
+
+                return 0;
+        } else {
+                /* At this stage, only a thread that encountered SELF_TEST_RUNNING reaches here */
+                while (atomic_load(&self_tests_status) == SELF_TEST_RUNNING)
+                        SLEEP(TIME);
+
+                /* After waiting for the status to change from "SELF_TEST_RUNNING",
+                 * read the self test status and return success or failure */
+                if (self_tests_status == SELF_TEST_DONE_AND_OK)
+                        return 0;
+                else
+                        return ISAL_CRYPTO_ERR_SELF_TEST;
+        }
+}
+#else /* FIPS_MODE disabled */
+#include <stdio.h>
+int
+isal_self_tests(void)
+{
+        fprintf(stderr, "FIPS Mode is not enabled\n");
+
+        return ISAL_CRYPTO_ERR_SELF_TEST;
+}
+#endif /* FIPS_MODE */