mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-12-24 19:35:43 +00:00
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/**
|
|
* \file constant_flow.h
|
|
*
|
|
* \brief This file contains tools to ensure tested code has constant flow.
|
|
*/
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef TEST_CONSTANT_FLOW_H
|
|
#define TEST_CONSTANT_FLOW_H
|
|
|
|
#if !defined(MBEDTLS_CONFIG_FILE)
|
|
#include "mbedtls/config.h"
|
|
#else
|
|
#include MBEDTLS_CONFIG_FILE
|
|
#endif
|
|
|
|
/*
|
|
* This file defines the two macros
|
|
*
|
|
* #define TEST_CF_SECRET(ptr, size)
|
|
* #define TEST_CF_PUBLIC(ptr, size)
|
|
*
|
|
* that can be used in tests to mark a memory area as secret (no branch or
|
|
* memory access should depend on it) or public (default, only needs to be
|
|
* marked explicitly when it was derived from secret data).
|
|
*
|
|
* Arguments:
|
|
* - ptr: a pointer to the memory area to be marked
|
|
* - size: the size in bytes of the memory area
|
|
*
|
|
* Implementation:
|
|
* The basic idea is that of ctgrind <https://github.com/agl/ctgrind>: we can
|
|
* re-use tools that were designed for checking use of uninitialized memory.
|
|
* This file contains two implementations: one based on MemorySanitizer, the
|
|
* other on valgrind's memcheck. If none of them is enabled, dummy macros that
|
|
* do nothing are defined for convenience.
|
|
*/
|
|
|
|
#if defined(MBEDTLS_TEST_CONSTANT_FLOW_MEMSAN)
|
|
#include <sanitizer/msan_interface.h>
|
|
|
|
/* Use macros to avoid messing up with origin tracking */
|
|
#define TEST_CF_SECRET __msan_allocated_memory
|
|
// void __msan_allocated_memory(const volatile void* data, size_t size);
|
|
#define TEST_CF_PUBLIC __msan_unpoison
|
|
// void __msan_unpoison(const volatile void *a, size_t size);
|
|
|
|
#elif defined(MBEDTLS_TEST_CONSTANT_FLOW_VALGRIND)
|
|
#include <valgrind/memcheck.h>
|
|
|
|
#define TEST_CF_SECRET VALGRIND_MAKE_MEM_UNDEFINED
|
|
// VALGRIND_MAKE_MEM_UNDEFINED(_qzz_addr, _qzz_len)
|
|
#define TEST_CF_PUBLIC VALGRIND_MAKE_MEM_DEFINED
|
|
// VALGRIND_MAKE_MEM_DEFINED(_qzz_addr, _qzz_len)
|
|
|
|
#else /* MBEDTLS_TEST_CONSTANT_FLOW_MEMSAN ||
|
|
MBEDTLS_TEST_CONSTANT_FLOW_VALGRIND */
|
|
|
|
#define TEST_CF_SECRET(ptr, size)
|
|
#define TEST_CF_PUBLIC(ptr, size)
|
|
|
|
#endif /* MBEDTLS_TEST_CONSTANT_FLOW_MEMSAN ||
|
|
MBEDTLS_TEST_CONSTANT_FLOW_VALGRIND */
|
|
|
|
#endif /* TEST_CONSTANT_FLOW_H */
|