Enable crypto code sharing between independent binaries

Signed-off-by: Tamas Ban <tamas.ban@arm.com>

applied using:
git am modules/tee/tf-m/trusted-firmware-m/lib/ext/mbedcrypto/\
0002-Enable-crypto-code-sharing-between-independent-binar.patch

Signed-off-by: Tomi Fontanilles <tomi.fontanilles@nordicsemi.no>

Author: tamasban

code_share.c

@@ -0,0 +1,3 @@
+/* This is a deliberately empty file just to check whether the patch for enabling
+ * extensive crypto code sharing was already applied on the mbedtls library.
+ */

library/platform.c

@@ -41,8 +41,8 @@ static void platform_free_uninit(void *ptr)
 #define MBEDTLS_PLATFORM_STD_FREE     platform_free_uninit
 #endif /* !MBEDTLS_PLATFORM_STD_FREE */
 
-static void * (*mbedtls_calloc_func)(size_t, size_t) = MBEDTLS_PLATFORM_STD_CALLOC;
-static void (*mbedtls_free_func)(void *) = MBEDTLS_PLATFORM_STD_FREE;
+void * (*mbedtls_calloc_func)(size_t, size_t) = MBEDTLS_PLATFORM_STD_CALLOC;
+void (*mbedtls_free_func)(void *) = MBEDTLS_PLATFORM_STD_FREE;
 
 void *mbedtls_calloc(size_t nmemb, size_t size)
 {

library/platform_util.c

@@ -88,7 +88,7 @@
 #if !defined(MBEDTLS_PLATFORM_HAS_EXPLICIT_BZERO) && !(defined(__STDC_LIB_EXT1__) && \
     !defined(__IAR_SYSTEMS_ICC__)) \
     && !defined(_WIN32)
-static void *(*const volatile memset_func)(void *, int, size_t) = memset;
+void *(*const volatile memset_func)(void *, int, size_t) = memset;
 #endif
 
 void mbedtls_platform_zeroize(void *buf, size_t len)