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Add library setup and teardown APIs

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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.
This commit is contained in:
Andres Amaya Garcia 2017-07-07 13:03:23 +01:00 • committed by Simon Butcher
parent 51e8c3ed7e
commit 2a6f39cb63
3 changed files with 76 additions and 0 deletions
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30
library/platform.c
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@ -304,4 +304,34 @@ int mbedtls_platform_set_nv_seed(
#endif /* MBEDTLS_PLATFORM_NV_SEED_ALT */
#endif /* MBEDTLS_ENTROPY_NV_SEED */
int mbedtls_platform_setup( mbedtls_platform_context *ctx )
{
return( mbedtls_internal_platform_setup( ctx ) );
}
void mbedtls_platform_teardown( mbedtls_platform_context *ctx )
{
mbedtls_internal_platform_teardown( ctx );
}
#if !defined(MBEDTLS_PLATFORM_SETUP_ALT)
/*
* Placeholder internal platform setup that does nothing by default
*/
int mbedtls_internal_platform_setup( mbedtls_platform_context *ctx )
{
(void)ctx;
return( 0 );
}
/*
* Placeholder internal platform teardown that does nothing by default
*/
void mbedtls_internal_platform_teardown( mbedtls_platform_context *ctx )
{
(void)ctx;
}
#endif /* MBEDTLS_PLATFORM_SETUP_ALT */
#endif /* MBEDTLS_PLATFORM_C */