Commit graph

43 commits

Author SHA1 Message Date
Hanno Becker cfa2e33fd2 Omit runtime configuration of calloc/free if macro config enabled
This commit removes the definition of the API function

`mbedtls_platform_set_calloc_free()`

from `library/platform.c` in case the macros

`MBEDTLS_PLATFORM_CALLOC_MACRO`
`MBEDTLS_PLATFORM_FREE_MACRO`

for compile time configuration of calloc/free are set.

This is in line with the corresponding header `mbedtls/platform.h`
which declares `mbedtls_platform_set_calloc_free()` only if
`MBEDTLS_PLATFORM_{CALLOC/FREE}_MACRO` are not defined.

Fixes #1642.
2018-10-11 11:04:20 +01:00
Roberto Vargas 7decfe8c1e Convert mbedtls_free and mbedtls_calloc into functions
When MBEDTLS_PLATFORM_MEMORY is defined but MBEDTLS_PLATFORM_FREE_MACRO or
MBEDTLS_PLATFORM_CALLOC_MACRO are not defined then the actual functions
used to allocate and free memory are stored in function pointers.
These pointers are exposed to the caller, and it means that the caller
and the library have to share a data section.

In TF-A, we execute in a very constrained environment, where some images
are executed from ROM and other images are executed from SRAM. The
images that are executed from ROM cannot be modified. The SRAM size
is very small and we are moving libraries to the ROM that can be shared
between the different SRAM images.  These SRAM images could import all the
symbols used in mbedtls, but it would create an undesirable hard binary
dependency between the different images. For this reason, all the library
functions in ROM are accesed using a jump table whose base address is
known, allowing the images to execute with different versions of the ROM.

This commit changes the function pointers to actual functions,
so that the SRAM images only have to use the new exported symbols
(mbedtls_calloc and mbedtls_free) using the jump table. In
our scenario, mbedtls_platform_set_calloc_free is called from
mbedtls_memory_buffer_alloc_init which initializes the function pointers
to the internal buffer_alloc_calloc and buffer_alloc_free functions.

No functional changes to mbedtls_memory_buffer_alloc_init.

Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>
2018-06-13 09:17:59 +01:00
Andres Amaya Garcia 1f6301b3c8 Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
Gilles Peskine 19c3862d0c Merge remote-tracking branch 'upstream-public/pr/1079' into development-proposed 2018-03-11 00:45:10 +01:00
Manuel Pégourié-Gonnard a268da9478 Fix undefined function in platform.c
The bug was introduced in 79a2e7ef06 and is not present in the default
configuration, which let it go unnoticed so far.
2017-12-20 12:52:49 +01:00
Gilles Peskine c753f5daf4 Merge remote-tracking branch 'upstream-restricted/pr/369' into development-restricted 2017-11-28 14:16:47 +01:00
Ron Eldor bc18eb3b92 Fix compilation error with Mingw32
Fix compilation error on Mingw32 when `_TRUNCATE` is defined. Use
`_TRUNCATE` only if `__MINGW32__` not defined. Fix suggested by
Thomas Glanzmann and Nick Wilson on issue #355
2017-09-06 17:51:14 +03:00
Andres Amaya Garcia d91f99f868 Rename macro SETUP_ALT to SETUP_TEARDOWN_ALT
Rename the macro MBEDTLS_PLATFORM_SETUP_ALT to
MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT to make the name more descriptive
as this macro enables/disables both functions.
2017-07-27 21:44:33 +01:00
Andres Amaya Garcia 3c8a39d28a Remove internal functions from setup API 2017-07-27 21:44:33 +01:00
Andres Amaya Garcia 2a6f39cb63 Add library setup and teardown APIs
Add the following two functions to allow platform setup and teardown
operations for the full library to be hooked in:

* mbedtls_platform_setup()
* mbedtls_platform_teardown()

An mbedtls_platform_context C structure is also added and two internal
functions that are called by the corresponding setup and teardown
functions above:

* mbedtls_internal_platform_setup()
* mbedtls_internal_plartform_teardown()

Finally, the macro MBEDTLS_PLATFORM_SETUP_ALT is also added to allow
mbedtls_platform_context and internal function to be overriden by the
user as needed for a platform.
2017-07-27 21:44:33 +01:00
Andres Amaya Garcia 79a2e7ef06 Zeroize return buf on failure in platform.c 2017-06-26 11:10:22 +01:00
Simon B 3249cb780b Fix various compiler warnings with MSVC
Fixes various compiler warnings found with Microsoft Visual Studio 2015
(and earlier versions).
2016-11-10 15:37:33 +00:00
Simon Butcher 23e9778684 Adds missing conditions for platform time
In platform.c, made the time functions dependent on the configuration
MBEDTLS_HAVE_TIME to fix a build break where the functions could be
built but the mbedtls_time_t was not defined.
2016-07-13 14:47:07 +01:00
Paul Bakker e021a4be13 Introduce platform-layer functions for reading/writing seed from NV
Introduces mbedtls_nv_seed_read() and mbedtls_nv_seed_write().

The platform-layer functions are only available when
MBEDTLS_ENTROPY_NV_SEED is enabled.
2016-06-01 16:34:49 +01:00
Simon Butcher 3fe6cd3a2d Fixes time() abstraction for custom configs
Added platform abstraction of time() to ChangeLog, version features, and fixed the build for dynamic configuration.
2016-04-26 19:51:29 +01:00
SimonB d5800b7761 Abstracts away time()/stdlib.h into platform
Substitutes time() into a configurable platform interface to allow it to be
easily substituted.
2016-04-26 14:49:59 +01:00
Manuel Pégourié-Gonnard 37ff14062e Change main license to Apache 2.0 2015-09-04 14:21:07 +02:00
Manuel Pégourié-Gonnard 6fb8187279 Update date in copyright line 2015-07-28 17:11:58 +02:00
Manuel Pégourié-Gonnard a4f055fe0c Some windows environments don't have _snprint_s
Do an alternative version for them.
That happens for example with our windows buildbot with mingw32-make.
2015-07-08 17:35:37 +02:00
Manuel Pégourié-Gonnard f659d2cd40 Tune up Windows snprintf() support
When we build with Visual Studio in debug mode, the invalid parameter handler
aborts the application (and offers to debug it) when n is 0. We want to
just return -1 instead (as calls with n == 0 are expected and happen in our
tests).
2015-06-26 17:45:00 +02:00
Manuel Pégourié-Gonnard 6c0c8e0d3d Include fixed snprintf for Windows in platform.c
Use _WIN32 to detect it rather that _MSC_VER as it turns out MSYS2 uses the
broken MS version by default too.
2015-06-22 14:42:04 +02:00
Manuel Pégourié-Gonnard 7ee5ddd798 Merge branch 'mbedtls-1.3' into development
* mbedtls-1.3:
  Fix compile errors with NO_STD_FUNCTIONS
  Expand config.pl's notion of "full"
  Ack external bugfix in Changelog
  FIx misplaced Changelog entry (oops)
  Fix compile bug: incompatible declaration of polarssl_exit in platform.c
  Fix contributor's name in Changelog
2015-06-03 10:33:55 +01:00
Manuel Pégourié-Gonnard dccb80b7e5 Fix compile errors with NO_STD_FUNCTIONS 2015-06-03 10:20:33 +01:00
ptahpeteh 249bece013 Fix compile bug: incompatible declaration of polarssl_exit in platform.c
This causes a compile-time error: 

platform.c(157): error:  #147: declaration is incompatible with "void (*polarssl_exit)(int)" (declared at line 179 of "platform.h")
2015-06-02 15:26:09 +02:00
Manuel Pégourié-Gonnard b9ef1182f3 Adapt the platform layer from malloc to calloc 2015-05-27 16:58:55 +02:00
Manuel Pégourié-Gonnard 2cf5a7c98e The Great Renaming
A simple execution of tmp/invoke-rename.pl
2015-04-08 13:25:31 +02:00
Manuel Pégourié-Gonnard a5cc2aa769 Fix bug in POLARSSL_PLATFORM_STD_EXIT support 2015-04-03 18:17:37 +02:00
Manuel Pégourié-Gonnard 32a7fe3fec Fix bug in POLARSSL_PLATFORM_STD_EXIT support 2015-04-03 17:56:30 +02:00
Manuel Pégourié-Gonnard 7f8099773e Rename include directory to mbedtls 2015-03-10 11:23:56 +00:00
Manuel Pégourié-Gonnard fe44643b0e Rename website and repository 2015-03-06 13:17:10 +00:00
Rich Evans c39cb4986b add POLARSSL_PLATFORM_EXIT_ALT 2015-02-13 13:50:26 +00:00
Rich Evans 46b0a8d15a add platform_set_snprintf 2015-02-13 13:50:25 +00:00
Manuel Pégourié-Gonnard 860b51642d Fix url again 2015-01-28 17:12:07 +00:00
Manuel Pégourié-Gonnard 085ab040aa Fix website url to use https. 2015-01-23 11:06:27 +00:00
Manuel Pégourié-Gonnard 9698f5852c Remove maintainer line. 2015-01-23 10:59:00 +00:00
Manuel Pégourié-Gonnard 19f6b5dfaa Remove redundant "all rights reserved" 2015-01-23 10:54:00 +00:00
Manuel Pégourié-Gonnard a658a4051b Update copyright 2015-01-23 09:55:24 +00:00
Manuel Pégourié-Gonnard 967a2a5f8c Change name to mbed TLS in the copyright notice 2015-01-22 14:28:16 +00:00
Manuel Pégourié-Gonnard cef4ad2509 Adapt sources to configurable config.h name 2014-04-30 16:40:20 +02:00
Paul Bakker 10a9dd35ea Typo in POLARSSL_PLATFORM_STD_FPRINTF in platform.c 2014-04-25 11:27:16 +02:00
Manuel Pégourié-Gonnard 74bc68ac62 Fix default #define for malloc/free 2014-04-02 13:20:00 +02:00
Paul Bakker defc0ca337 Migrated the Memory layer to the Platform layer
Deprecated POLARSSL_MEMORY_C and placed placeholder for memory.h to make
sure current code will not break on new version.
2014-02-06 13:20:17 +01:00
Paul Bakker 747a83a0f7 Platform abstraction layer for memory, printf and fprintf 2014-02-06 13:15:25 +01:00