Import mbedtls-2.16.0

Imports mbedTLS 2.16.0 from https://github.com/ARMmbed/mbedtls.git
commit fb1972db23da ("Merge pull request #544 from ARMmbed/version-2.16")
(tag mbedtls-2.16.0).

Certain files will never be needed and are thus removed (reducing number
of lines to almost 50%):
rm -f circle.yml CMakeLists.txt DartConfiguration.tcl Makefile
rm -f .gitignore .travis.yml .pylint
rm -f include/.gitignore include/CMakeLists.txt library/.gitignore
rm -f library/CMakeLists.txt library/Makefile
rm -rf .git .github doxygen configs programs scripts tests visualc yotta

This is a complete overwrite of previous code so earlier changes in the
branch import/mbedtls-2.6.1 will be added on top of this commit to bring
the changes forward.

Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/lib/libmbedtls/mbedtls/library/md_wrap.c b/lib/libmbedtls/mbedtls/library/md_wrap.c
index b8a8391..32f0871 100644
--- a/lib/libmbedtls/mbedtls/library/md_wrap.c
+++ b/lib/libmbedtls/mbedtls/library/md_wrap.c
@@ -1,4 +1,3 @@
-// SPDX-License-Identifier: Apache-2.0
 /**
  * \file md_wrap.c
  *
@@ -7,6 +6,7 @@
  * \author Adriaan de Jong <dejong@fox-it.com>
  *
  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ *  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.
@@ -71,20 +71,20 @@
 
 #if defined(MBEDTLS_MD2_C)
 
-static void md2_starts_wrap( void *ctx )
+static int md2_starts_wrap( void *ctx )
 {
-    mbedtls_md2_starts( (mbedtls_md2_context *) ctx );
+    return( mbedtls_md2_starts_ret( (mbedtls_md2_context *) ctx ) );
 }
 
-static void md2_update_wrap( void *ctx, const unsigned char *input,
+static int md2_update_wrap( void *ctx, const unsigned char *input,
                              size_t ilen )
 {
-    mbedtls_md2_update( (mbedtls_md2_context *) ctx, input, ilen );
+    return( mbedtls_md2_update_ret( (mbedtls_md2_context *) ctx, input, ilen ) );
 }
 
-static void md2_finish_wrap( void *ctx, unsigned char *output )
+static int md2_finish_wrap( void *ctx, unsigned char *output )
 {
-    mbedtls_md2_finish( (mbedtls_md2_context *) ctx, output );
+    return( mbedtls_md2_finish_ret( (mbedtls_md2_context *) ctx, output ) );
 }
 
 static void *md2_ctx_alloc( void )
@@ -109,11 +109,11 @@
                  (const mbedtls_md2_context *) src );
 }
 
-static void md2_process_wrap( void *ctx, const unsigned char *data )
+static int md2_process_wrap( void *ctx, const unsigned char *data )
 {
     ((void) data);
 
-    mbedtls_md2_process( (mbedtls_md2_context *) ctx );
+    return( mbedtls_internal_md2_process( (mbedtls_md2_context *) ctx ) );
 }
 
 const mbedtls_md_info_t mbedtls_md2_info = {
@@ -124,7 +124,7 @@
     md2_starts_wrap,
     md2_update_wrap,
     md2_finish_wrap,
-    mbedtls_md2,
+    mbedtls_md2_ret,
     md2_ctx_alloc,
     md2_ctx_free,
     md2_clone_wrap,
@@ -135,20 +135,20 @@
 
 #if defined(MBEDTLS_MD4_C)
 
-static void md4_starts_wrap( void *ctx )
+static int md4_starts_wrap( void *ctx )
 {
-    mbedtls_md4_starts( (mbedtls_md4_context *) ctx );
+    return( mbedtls_md4_starts_ret( (mbedtls_md4_context *) ctx ) );
 }
 
-static void md4_update_wrap( void *ctx, const unsigned char *input,
+static int md4_update_wrap( void *ctx, const unsigned char *input,
                              size_t ilen )
 {
-    mbedtls_md4_update( (mbedtls_md4_context *) ctx, input, ilen );
+    return( mbedtls_md4_update_ret( (mbedtls_md4_context *) ctx, input, ilen ) );
 }
 
-static void md4_finish_wrap( void *ctx, unsigned char *output )
+static int md4_finish_wrap( void *ctx, unsigned char *output )
 {
-    mbedtls_md4_finish( (mbedtls_md4_context *) ctx, output );
+    return( mbedtls_md4_finish_ret( (mbedtls_md4_context *) ctx, output ) );
 }
 
 static void *md4_ctx_alloc( void )
@@ -170,12 +170,12 @@
 static void md4_clone_wrap( void *dst, const void *src )
 {
     mbedtls_md4_clone( (mbedtls_md4_context *) dst,
-                 (const mbedtls_md4_context *) src );
+                       (const mbedtls_md4_context *) src );
 }
 
-static void md4_process_wrap( void *ctx, const unsigned char *data )
+static int md4_process_wrap( void *ctx, const unsigned char *data )
 {
-    mbedtls_md4_process( (mbedtls_md4_context *) ctx, data );
+    return( mbedtls_internal_md4_process( (mbedtls_md4_context *) ctx, data ) );
 }
 
 const mbedtls_md_info_t mbedtls_md4_info = {
@@ -186,7 +186,7 @@
     md4_starts_wrap,
     md4_update_wrap,
     md4_finish_wrap,
-    mbedtls_md4,
+    mbedtls_md4_ret,
     md4_ctx_alloc,
     md4_ctx_free,
     md4_clone_wrap,
@@ -197,20 +197,20 @@
 
 #if defined(MBEDTLS_MD5_C)
 
-static void md5_starts_wrap( void *ctx )
+static int md5_starts_wrap( void *ctx )
 {
-    mbedtls_md5_starts( (mbedtls_md5_context *) ctx );
+    return( mbedtls_md5_starts_ret( (mbedtls_md5_context *) ctx ) );
 }
 
-static void md5_update_wrap( void *ctx, const unsigned char *input,
+static int md5_update_wrap( void *ctx, const unsigned char *input,
                              size_t ilen )
 {
-    mbedtls_md5_update( (mbedtls_md5_context *) ctx, input, ilen );
+    return( mbedtls_md5_update_ret( (mbedtls_md5_context *) ctx, input, ilen ) );
 }
 
-static void md5_finish_wrap( void *ctx, unsigned char *output )
+static int md5_finish_wrap( void *ctx, unsigned char *output )
 {
-    mbedtls_md5_finish( (mbedtls_md5_context *) ctx, output );
+    return( mbedtls_md5_finish_ret( (mbedtls_md5_context *) ctx, output ) );
 }
 
 static void *md5_ctx_alloc( void )
@@ -232,12 +232,12 @@
 static void md5_clone_wrap( void *dst, const void *src )
 {
     mbedtls_md5_clone( (mbedtls_md5_context *) dst,
-                 (const mbedtls_md5_context *) src );
+                       (const mbedtls_md5_context *) src );
 }
 
-static void md5_process_wrap( void *ctx, const unsigned char *data )
+static int md5_process_wrap( void *ctx, const unsigned char *data )
 {
-    mbedtls_md5_process( (mbedtls_md5_context *) ctx, data );
+    return( mbedtls_internal_md5_process( (mbedtls_md5_context *) ctx, data ) );
 }
 
 const mbedtls_md_info_t mbedtls_md5_info = {
@@ -248,7 +248,7 @@
     md5_starts_wrap,
     md5_update_wrap,
     md5_finish_wrap,
-    mbedtls_md5,
+    mbedtls_md5_ret,
     md5_ctx_alloc,
     md5_ctx_free,
     md5_clone_wrap,
@@ -259,20 +259,22 @@
 
 #if defined(MBEDTLS_RIPEMD160_C)
 
-static void ripemd160_starts_wrap( void *ctx )
+static int ripemd160_starts_wrap( void *ctx )
 {
-    mbedtls_ripemd160_starts( (mbedtls_ripemd160_context *) ctx );
+    return( mbedtls_ripemd160_starts_ret( (mbedtls_ripemd160_context *) ctx ) );
 }
 
-static void ripemd160_update_wrap( void *ctx, const unsigned char *input,
+static int ripemd160_update_wrap( void *ctx, const unsigned char *input,
                                    size_t ilen )
 {
-    mbedtls_ripemd160_update( (mbedtls_ripemd160_context *) ctx, input, ilen );
+    return( mbedtls_ripemd160_update_ret( (mbedtls_ripemd160_context *) ctx,
+                                          input, ilen ) );
 }
 
-static void ripemd160_finish_wrap( void *ctx, unsigned char *output )
+static int ripemd160_finish_wrap( void *ctx, unsigned char *output )
 {
-    mbedtls_ripemd160_finish( (mbedtls_ripemd160_context *) ctx, output );
+    return( mbedtls_ripemd160_finish_ret( (mbedtls_ripemd160_context *) ctx,
+                                          output ) );
 }
 
 static void *ripemd160_ctx_alloc( void )
@@ -297,9 +299,10 @@
                        (const mbedtls_ripemd160_context *) src );
 }
 
-static void ripemd160_process_wrap( void *ctx, const unsigned char *data )
+static int ripemd160_process_wrap( void *ctx, const unsigned char *data )
 {
-    mbedtls_ripemd160_process( (mbedtls_ripemd160_context *) ctx, data );
+    return( mbedtls_internal_ripemd160_process(
+                                (mbedtls_ripemd160_context *) ctx, data ) );
 }
 
 const mbedtls_md_info_t mbedtls_ripemd160_info = {
@@ -310,7 +313,7 @@
     ripemd160_starts_wrap,
     ripemd160_update_wrap,
     ripemd160_finish_wrap,
-    mbedtls_ripemd160,
+    mbedtls_ripemd160_ret,
     ripemd160_ctx_alloc,
     ripemd160_ctx_free,
     ripemd160_clone_wrap,
@@ -321,20 +324,21 @@
 
 #if defined(MBEDTLS_SHA1_C)
 
-static void sha1_starts_wrap( void *ctx )
+static int sha1_starts_wrap( void *ctx )
 {
-    mbedtls_sha1_starts( (mbedtls_sha1_context *) ctx );
+    return( mbedtls_sha1_starts_ret( (mbedtls_sha1_context *) ctx ) );
 }
 
-static void sha1_update_wrap( void *ctx, const unsigned char *input,
+static int sha1_update_wrap( void *ctx, const unsigned char *input,
                               size_t ilen )
 {
-    mbedtls_sha1_update( (mbedtls_sha1_context *) ctx, input, ilen );
+    return( mbedtls_sha1_update_ret( (mbedtls_sha1_context *) ctx,
+                                     input, ilen ) );
 }
 
-static void sha1_finish_wrap( void *ctx, unsigned char *output )
+static int sha1_finish_wrap( void *ctx, unsigned char *output )
 {
-    mbedtls_sha1_finish( (mbedtls_sha1_context *) ctx, output );
+    return( mbedtls_sha1_finish_ret( (mbedtls_sha1_context *) ctx, output ) );
 }
 
 static void *sha1_ctx_alloc( void )
@@ -359,9 +363,10 @@
     mbedtls_free( ctx );
 }
 
-static void sha1_process_wrap( void *ctx, const unsigned char *data )
+static int sha1_process_wrap( void *ctx, const unsigned char *data )
 {
-    mbedtls_sha1_process( (mbedtls_sha1_context *) ctx, data );
+    return( mbedtls_internal_sha1_process( (mbedtls_sha1_context *) ctx,
+                                           data ) );
 }
 
 const mbedtls_md_info_t mbedtls_sha1_info = {
@@ -372,7 +377,7 @@
     sha1_starts_wrap,
     sha1_update_wrap,
     sha1_finish_wrap,
-    mbedtls_sha1,
+    mbedtls_sha1_ret,
     sha1_ctx_alloc,
     sha1_ctx_free,
     sha1_clone_wrap,
@@ -386,26 +391,28 @@
  */
 #if defined(MBEDTLS_SHA256_C)
 
-static void sha224_starts_wrap( void *ctx )
+static int sha224_starts_wrap( void *ctx )
 {
-    mbedtls_sha256_starts( (mbedtls_sha256_context *) ctx, 1 );
+    return( mbedtls_sha256_starts_ret( (mbedtls_sha256_context *) ctx, 1 ) );
 }
 
-static void sha224_update_wrap( void *ctx, const unsigned char *input,
+static int sha224_update_wrap( void *ctx, const unsigned char *input,
                                 size_t ilen )
 {
-    mbedtls_sha256_update( (mbedtls_sha256_context *) ctx, input, ilen );
+    return( mbedtls_sha256_update_ret( (mbedtls_sha256_context *) ctx,
+                                       input, ilen ) );
 }
 
-static void sha224_finish_wrap( void *ctx, unsigned char *output )
+static int sha224_finish_wrap( void *ctx, unsigned char *output )
 {
-    mbedtls_sha256_finish( (mbedtls_sha256_context *) ctx, output );
+    return( mbedtls_sha256_finish_ret( (mbedtls_sha256_context *) ctx,
+                                       output ) );
 }
 
-static void sha224_wrap( const unsigned char *input, size_t ilen,
-                    unsigned char *output )
+static int sha224_wrap( const unsigned char *input, size_t ilen,
+                        unsigned char *output )
 {
-    mbedtls_sha256( input, ilen, output, 1 );
+    return( mbedtls_sha256_ret( input, ilen, output, 1 ) );
 }
 
 static void *sha224_ctx_alloc( void )
@@ -430,9 +437,10 @@
                     (const mbedtls_sha256_context *) src );
 }
 
-static void sha224_process_wrap( void *ctx, const unsigned char *data )
+static int sha224_process_wrap( void *ctx, const unsigned char *data )
 {
-    mbedtls_sha256_process( (mbedtls_sha256_context *) ctx, data );
+    return( mbedtls_internal_sha256_process( (mbedtls_sha256_context *) ctx,
+                                             data ) );
 }
 
 const mbedtls_md_info_t mbedtls_sha224_info = {
@@ -450,15 +458,15 @@
     sha224_process_wrap,
 };
 
-static void sha256_starts_wrap( void *ctx )
+static int sha256_starts_wrap( void *ctx )
 {
-    mbedtls_sha256_starts( (mbedtls_sha256_context *) ctx, 0 );
+    return( mbedtls_sha256_starts_ret( (mbedtls_sha256_context *) ctx, 0 ) );
 }
 
-static void sha256_wrap( const unsigned char *input, size_t ilen,
-                    unsigned char *output )
+static int sha256_wrap( const unsigned char *input, size_t ilen,
+                        unsigned char *output )
 {
-    mbedtls_sha256( input, ilen, output, 0 );
+    return( mbedtls_sha256_ret( input, ilen, output, 0 ) );
 }
 
 const mbedtls_md_info_t mbedtls_sha256_info = {
@@ -480,26 +488,28 @@
 
 #if defined(MBEDTLS_SHA512_C)
 
-static void sha384_starts_wrap( void *ctx )
+static int sha384_starts_wrap( void *ctx )
 {
-    mbedtls_sha512_starts( (mbedtls_sha512_context *) ctx, 1 );
+    return( mbedtls_sha512_starts_ret( (mbedtls_sha512_context *) ctx, 1 ) );
 }
 
-static void sha384_update_wrap( void *ctx, const unsigned char *input,
-                                size_t ilen )
+static int sha384_update_wrap( void *ctx, const unsigned char *input,
+                               size_t ilen )
 {
-    mbedtls_sha512_update( (mbedtls_sha512_context *) ctx, input, ilen );
+    return( mbedtls_sha512_update_ret( (mbedtls_sha512_context *) ctx,
+                                       input, ilen ) );
 }
 
-static void sha384_finish_wrap( void *ctx, unsigned char *output )
+static int sha384_finish_wrap( void *ctx, unsigned char *output )
 {
-    mbedtls_sha512_finish( (mbedtls_sha512_context *) ctx, output );
+    return( mbedtls_sha512_finish_ret( (mbedtls_sha512_context *) ctx,
+                                       output ) );
 }
 
-static void sha384_wrap( const unsigned char *input, size_t ilen,
-                    unsigned char *output )
+static int sha384_wrap( const unsigned char *input, size_t ilen,
+                        unsigned char *output )
 {
-    mbedtls_sha512( input, ilen, output, 1 );
+    return( mbedtls_sha512_ret( input, ilen, output, 1 ) );
 }
 
 static void *sha384_ctx_alloc( void )
@@ -524,9 +534,10 @@
                     (const mbedtls_sha512_context *) src );
 }
 
-static void sha384_process_wrap( void *ctx, const unsigned char *data )
+static int sha384_process_wrap( void *ctx, const unsigned char *data )
 {
-    mbedtls_sha512_process( (mbedtls_sha512_context *) ctx, data );
+    return( mbedtls_internal_sha512_process( (mbedtls_sha512_context *) ctx,
+                                             data ) );
 }
 
 const mbedtls_md_info_t mbedtls_sha384_info = {
@@ -544,15 +555,15 @@
     sha384_process_wrap,
 };
 
-static void sha512_starts_wrap( void *ctx )
+static int sha512_starts_wrap( void *ctx )
 {
-    mbedtls_sha512_starts( (mbedtls_sha512_context *) ctx, 0 );
+    return( mbedtls_sha512_starts_ret( (mbedtls_sha512_context *) ctx, 0 ) );
 }
 
-static void sha512_wrap( const unsigned char *input, size_t ilen,
-                    unsigned char *output )
+static int sha512_wrap( const unsigned char *input, size_t ilen,
+                        unsigned char *output )
 {
-    mbedtls_sha512( input, ilen, output, 0 );
+    return( mbedtls_sha512_ret( input, ilen, output, 0 ) );
 }
 
 const mbedtls_md_info_t mbedtls_sha512_info = {