Squashed commit upgrading to mbedtls-3.6.0

Squash merging branch import/mbedtls-3.6.0

0fc9291f4 ("libmbedtls: bignum: restore mbedtls_mpi_exp_mod() from v3.5.2")
0ef87b1e6 ("libmbedtls: reset minimum rsa key size")
70b079496 ("libmbedtls: adjust use of rsa pk_wrap API")
6cf76464f ("libmbedtls: allow inclusion of arm_neon.h")
27df5c911 ("libmbedtls: fix cipher_wrap.c for NIST AES Key Wrap mode")
aa584f9ed ("libmbedtls: fix cipher_wrap.c for chacha20 and chachapoly")
523ae957e ("libmbedtls: add fault mitigation in mbedtls_rsa_rsassa_pkcs1_v15_verify()")
30bdb1bbf ("libmbedtls: add fault mitigation in mbedtls_rsa_rsassa_pss_verify_ext()")
e45cdab62 ("libmbedtls: add SM2 curve")
d2fda4fc2 ("libmbedtls: fix no CRT issue")
ab0eb5515 ("libmbedtls: add interfaces in mbedtls for context memory operation")
7925a6f26 ("libmedtls: mpi_miller_rabin: increase count limit")
8eaf69279 ("libmbedtls: add mbedtls_mpi_init_mempool()")
12e83fc8d ("libmbedtls: make mbedtls_mpi_mont*() available")
f9e261da5 ("mbedtls: configure mbedtls to reach for config")
7b6f378d7 ("mbedtls: remove default include/mbedtls/config.h")
c16331743 ("Import mbedtls-3.6.0")

Signed-off-by: Tom Van Eyck <tom.vaneyck@kuleuven.be>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
diff --git a/lib/libmbedtls/mbedtls/library/aesni.h b/lib/libmbedtls/mbedtls/library/aesni.h
index 51b770f..59e27af 100644
--- a/lib/libmbedtls/mbedtls/library/aesni.h
+++ b/lib/libmbedtls/mbedtls/library/aesni.h
@@ -8,19 +8,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #ifndef MBEDTLS_AESNI_H
 #define MBEDTLS_AESNI_H
@@ -32,22 +20,14 @@
 #define MBEDTLS_AESNI_AES      0x02000000u
 #define MBEDTLS_AESNI_CLMUL    0x00000002u
 
-/* Can we do AESNI with inline assembly?
- * (Only implemented with gas syntax, only for 64-bit.)
- */
-#if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) && \
-    (defined(__amd64__) || defined(__x86_64__))   &&  \
-    !defined(MBEDTLS_HAVE_X86_64)
-#define MBEDTLS_HAVE_X86_64
-#endif
-
-#if defined(MBEDTLS_AESNI_C)
+#if defined(MBEDTLS_AESNI_C) && \
+    (defined(MBEDTLS_ARCH_IS_X64) || defined(MBEDTLS_ARCH_IS_X86))
 
 /* Can we do AESNI with intrinsics?
  * (Only implemented with certain compilers, only for certain targets.)
  */
 #undef MBEDTLS_AESNI_HAVE_INTRINSICS
-#if defined(_MSC_VER)
+#if defined(_MSC_VER) && !defined(__clang__)
 /* Visual Studio supports AESNI intrinsics since VS 2008 SP1. We only support
  * VS 2013 and up for other reasons anyway, so no need to check the version. */
 #define MBEDTLS_AESNI_HAVE_INTRINSICS
@@ -55,20 +35,30 @@
 /* GCC-like compilers: currently, we only support intrinsics if the requisite
  * target flag is enabled when building the library (e.g. `gcc -mpclmul -msse2`
  * or `clang -maes -mpclmul`). */
-#if defined(__GNUC__) && defined(__AES__) && defined(__PCLMUL__)
+#if (defined(__GNUC__) || defined(__clang__)) && defined(__AES__) && defined(__PCLMUL__)
+#define MBEDTLS_AESNI_HAVE_INTRINSICS
+#endif
+/* For 32-bit, we only support intrinsics */
+#if defined(MBEDTLS_ARCH_IS_X86) && (defined(__GNUC__) || defined(__clang__))
 #define MBEDTLS_AESNI_HAVE_INTRINSICS
 #endif
 
-/* Choose the implementation of AESNI, if one is available. */
-#undef MBEDTLS_AESNI_HAVE_CODE
-/* To minimize disruption when releasing the intrinsics-based implementation,
- * favor the assembly-based implementation if it's available. We intend to
- * revise this in a later release of Mbed TLS 3.x. In the long run, we will
- * likely remove the assembly implementation. */
-#if defined(MBEDTLS_HAVE_X86_64)
-#define MBEDTLS_AESNI_HAVE_CODE 1 // via assembly
-#elif defined(MBEDTLS_AESNI_HAVE_INTRINSICS)
+/* Choose the implementation of AESNI, if one is available.
+ *
+ * Favor the intrinsics-based implementation if it's available, for better
+ * maintainability.
+ * Performance is about the same (see #7380).
+ * In the long run, we will likely remove the assembly implementation. */
+#if defined(MBEDTLS_AESNI_HAVE_INTRINSICS)
 #define MBEDTLS_AESNI_HAVE_CODE 2 // via intrinsics
+#elif defined(MBEDTLS_HAVE_ASM) && \
+    (defined(__GNUC__) || defined(__clang__)) && defined(MBEDTLS_ARCH_IS_X64)
+/* Can we do AESNI with inline assembly?
+ * (Only implemented with gas syntax, only for 64-bit.)
+ */
+#define MBEDTLS_AESNI_HAVE_CODE 1 // via assembly
+#else
+#error "MBEDTLS_AESNI_C defined, but neither intrinsics nor assembly available"
 #endif
 
 #if defined(MBEDTLS_AESNI_HAVE_CODE)
@@ -88,7 +78,11 @@
  *
  * \return         1 if CPU has support for the feature, 0 otherwise
  */
+#if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
 int mbedtls_aesni_has_support(unsigned int what);
+#else
+#define mbedtls_aesni_has_support(what) 1
+#endif
 
 /**
  * \brief          Internal AES-NI AES-ECB block encryption and decryption
@@ -125,6 +119,7 @@
                             const unsigned char a[16],
                             const unsigned char b[16]);
 
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 /**
  * \brief           Internal round key inversion. This function computes
  *                  decryption round keys from the encryption round keys.
@@ -139,6 +134,7 @@
 void mbedtls_aesni_inverse_key(unsigned char *invkey,
                                const unsigned char *fwdkey,
                                int nr);
+#endif /* !MBEDTLS_BLOCK_CIPHER_NO_DECRYPT */
 
 /**
  * \brief           Internal key expansion for encryption
@@ -161,6 +157,6 @@
 #endif
 
 #endif /* MBEDTLS_AESNI_HAVE_CODE */
-#endif  /* MBEDTLS_AESNI_C */
+#endif  /* MBEDTLS_AESNI_C && (MBEDTLS_ARCH_IS_X64 || MBEDTLS_ARCH_IS_X86) */
 
 #endif /* MBEDTLS_AESNI_H */