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Allow forcing 64-bit integer type

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Allow forcing 64-bit integer type for bignum operations. Also introduce
the macro MBEDTLS_TYPE_UDBL to allow configuration of the double length
integer in unknown compilers.
This commit is contained in:
Andres Amaya Garcia 2017-07-20 11:49:32 +01:00 committed by Simon Butcher
parent dd29c2f2c3
commit 6ee7dad896
2 changed files with 57 additions and 14 deletions
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41
include/mbedtls/bignum.h
View file

@ -103,13 +103,28 @@
/*
* Define the base integer type, architecture-wise.
*
* 32-bit integers can be forced on 64-bit arches (eg. for testing purposes)
* by defining MBEDTLS_HAVE_INT32 and undefining MBEDTLS_HAVE_ASM
* 32 or 64-bit integer types can be forced regardless of the underlying
* architecture by defining MBEDTLS_HAVE_INT32 or MBEDTLS_HAVE_INT64
* respectively and undefining MBEDTLS_HAVE_ASM.
*
* Double length integers (e.g. 128-bit in 64-bit architectures) can be
* disabled by defining MBEDTLS_NO_UDBL_DIVISION.
*
* The double length integer types can be configured by defining
* MBEDTLS_TYPE_UDBL when the type cannot be automatically deduced by the
* library (e.g. the compiler is unknown). The definition of MBEDTLS_TYPE_UDBL
* must be a complete statement of the form:
* typedef <UDBL_TYPE> mbedtls_t_udbl <OTHER_DIRECTIVES>
* for example:
* #define MBEDTLS_TYPE_UDBL \
* typedef unsigned int mbedtls_t_udbl __attribute__((mode(TI)))
*/
#if !defined(MBEDTLS_HAVE_INT32)
#if defined(_MSC_VER) && defined(_M_AMD64)
/* Always choose 64-bit when using MSC */
#if !defined(MBEDTLS_HAVE_INT64)
#define MBEDTLS_HAVE_INT64
#endif /* !MBEDTLS_HAVE_INT64 */
typedef int64_t mbedtls_mpi_sint;
typedef uint64_t mbedtls_mpi_uint;
#elif defined(__GNUC__) && ( \
@ -118,22 +133,39 @@
defined(__ia64__) || defined(__alpha__) || \
( defined(__sparc__) && defined(__arch64__) ) || \
defined(__s390x__) || defined(__mips64) )
#if !defined(MBEDTLS_HAVE_INT64)
#define MBEDTLS_HAVE_INT64
#endif /* MBEDTLS_HAVE_INT64 */
typedef int64_t mbedtls_mpi_sint;
typedef uint64_t mbedtls_mpi_uint;
#if !defined(MBEDTLS_NO_UDBL_DIVISION)
/* mbedtls_t_udbl defined as 128-bit unsigned int */
typedef unsigned int mbedtls_t_udbl __attribute__((mode(TI)));
#define MBEDTLS_HAVE_UDBL
#endif /* !MBEDTLS_NO_UDBL_DIVISION */
#elif defined(__ARMCC_VERSION) && defined(__aarch64__)
/* __ARMCC_VERSION is defined for both armcc and armclang and
/*
* __ARMCC_VERSION is defined for both armcc and armclang and
* __aarch64__ is only defined by armclang when compiling 64-bit code
*/
#if !defined(MBEDTLS_HAVE_INT64)
#define MBEDTLS_HAVE_INT64
#endif /* !MBEDTLS_HAVE_INT64 */
typedef int64_t mbedtls_mpi_sint;
typedef uint64_t mbedtls_mpi_uint;
#if !defined(MBEDTLS_NO_UDBL_DIVISION)
/* mbedtls_t_udbl defined as 128-bit unsigned int */
typedef __uint128_t mbedtls_t_udbl;
#define MBEDTLS_HAVE_UDBL
#endif /* !MBEDTLS_NO_UDBL_DIVISION */
#elif defined(MBEDTLS_HAVE_INT64)
/* Force 64-bit integers with unknown compiler */
typedef int64_t mbedtls_mpi_sint;
typedef uint64_t mbedtls_mpi_uint;
#if !defined(MBEDTLS_NO_UDBL_DIVISION) && defined(MBEDTLS_TYPE_UDBL)
MBEDTLS_TYPE_UDBL;
#define MBEDTLS_HAVE_UDBL
#endif /* !MBEDTLS_NO_UDBL_DIVISION && MBEDTLS_TYPE_UDBL */
#endif
#endif /* !MBEDTLS_HAVE_INT32 */
@ -144,8 +176,9 @@
#endif /* !MBEDTLS_HAVE_INT32 */
typedef int32_t mbedtls_mpi_sint;
typedef uint32_t mbedtls_mpi_uint;
#if !defined(MBEDTLS_NO_UDBL_DIVISION)
typedef uint64_t mbedtls_t_udbl;
#define MBEDTLS_HAVE_UDBL
#endif /* !MBEDTLS_NO_UDBL_DIVISION */
#endif /* !MBEDTLS_HAVE_INT64 */
#ifdef __cplusplus

10
include/mbedtls/check_config.h
View file

@ -650,6 +650,16 @@
#error "MBEDTLS_X509_CSR_WRITE_C defined, but not all prerequisites"
#endif
#if defined(MBEDTLS_HAVE_INT32) && defined(MBEDTLS_HAVE_INT64)
#error "MBEDTLS_HAVE_INT32 and MBEDTLS_HAVE_INT64 cannot be defined simultaneously"
#endif /* MBEDTLS_HAVE_INT32 && MBEDTLS_HAVE_INT64 */
#if (defined(MBEDTLS_HAVE_INT32) || define(MBEDTLS_HAVE_INT64)) && \
defined(MBEDTLS_HAVE_ASM
#error "MBEDTLS_HAVE_INT32/MBEDTLS_HAVE_INT64 and MBEDTLS_HAVE_INT64 cannot be"
"defined simultaneously"
#endif /* (MBEDTLS_HAVE_INT32 || MBEDTLS_HAVE_INT64) && MBEDTLS_HAVE_ASM */
/*
* Avoid warning from -pedantic. This is a convenient place for this
* workaround since this is included by every single file before the