Fix #8372 - Error compiling AESNI in Mbed-TLS with clang on Windows
It can successfully compile w/ the clang options -maes -mpclmul.
Signed-off-by: Sergey Markelov <sergey@solidstatenetworks.com>
diff --git a/library/aesni.c b/library/aesni.c
index 5f25a82..92626e1 100644
--- a/library/aesni.c
+++ b/library/aesni.c
@@ -52,7 +52,7 @@
if (!done) {
#if MBEDTLS_AESNI_HAVE_CODE == 2
- static unsigned info[4] = { 0, 0, 0, 0 };
+ static int info[4] = { 0, 0, 0, 0 };
#if defined(_MSC_VER)
__cpuid(info, 1);
#else
@@ -187,7 +187,7 @@
const unsigned char a[16],
const unsigned char b[16])
{
- __m128i aa, bb, cc, dd;
+ __m128i aa = { 0 }, bb = { 0 }, cc, dd;
/* The inputs are in big-endian order, so byte-reverse them */
for (size_t i = 0; i < 16; i++) {
diff --git a/library/aesni.h b/library/aesni.h
index ba14290..952e138 100644
--- a/library/aesni.h
+++ b/library/aesni.h
@@ -39,7 +39,7 @@
* (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
@@ -47,7 +47,7 @@
/* 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
@@ -65,7 +65,7 @@
* (Only implemented with gas syntax, only for 64-bit.)
*/
#define MBEDTLS_AESNI_HAVE_CODE 1 // via assembly
-#elif defined(__GNUC__)
+#elif defined(__GNUC__) || defined(__clang__)
# error "Must use `-mpclmul -msse2 -maes` for MBEDTLS_AESNI_C"
#else
#error "MBEDTLS_AESNI_C defined, but neither intrinsics nor assembly available"