Merge pull request #4640 from TRodziewicz/move_part_of_timing_module_out_of_the_library_and_to_test

Move part of timing module out of the library

include/mbedtls/config.h

@@ -47,7 +47,6 @@
  *
  * Used in:
  *      library/aria.c
- *      library/timing.c
  *      library/bn_mul.h
  *
  * Required by:
@@ -268,7 +267,7 @@
 /**
  * \def MBEDTLS_TIMING_ALT
  *
- * Uncomment to provide your own alternate implementation for mbedtls_timing_hardclock(),
+ * Uncomment to provide your own alternate implementation for
  * mbedtls_timing_get_timer(), mbedtls_set_alarm(), mbedtls_set/get_delay()
  *
  * Only works if you have MBEDTLS_TIMING_C enabled.
@@ -1014,8 +1013,7 @@
 /**
  * \def MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
  *
- * Do not add default entropy sources. These are the platform specific
- * or mbedtls_timing_hardclock poll function.
+ * Do not add default entropy sources in mbedtls_entropy_init().
  *
  * This is useful to have more control over the added entropy sources in an
  * application.

include/mbedtls/timing.h

@@ -61,51 +61,9 @@ typedef struct mbedtls_timing_delay_context
 #include "timing_alt.h"
 #endif /* MBEDTLS_TIMING_ALT */
 
-extern volatile int mbedtls_timing_alarmed;
-
-/**
- * \brief          Return the CPU cycle counter value
- *
- * \warning        This is only a best effort! Do not rely on this!
- *                 In particular, it is known to be unreliable on virtual
- *                 machines.
- *
- * \note           This value starts at an unspecified origin and
- *                 may wrap around.
- */
-unsigned long mbedtls_timing_hardclock( void );
-
-/**
- * \brief          Return the elapsed time in milliseconds
- *
- * \param val      points to a timer structure
- * \param reset    If 0, query the elapsed time. Otherwise (re)start the timer.
- *
- * \return         Elapsed time since the previous reset in ms. When
- *                 restarting, this is always 0.
- *
- * \note           To initialize a timer, call this function with reset=1.
- *
- *                 Determining the elapsed time and resetting the timer is not
- *                 atomic on all platforms, so after the sequence
- *                 `{ get_timer(1); ...; time1 = get_timer(1); ...; time2 =
- *                 get_timer(0) }` the value time1+time2 is only approximately
- *                 the delay since the first reset.
- */
+/* Internal use */
 unsigned long mbedtls_timing_get_timer( struct mbedtls_timing_hr_time *val, int reset );
 
-/**
- * \brief          Setup an alarm clock
- *
- * \param seconds  delay before the "mbedtls_timing_alarmed" flag is set
- *                 (must be >=0)
- *
- * \warning        Only one alarm at a time  is supported. In a threaded
- *                 context, this means one for the whole process, not one per
- *                 thread.
- */
-void mbedtls_set_alarm( int seconds );
-
 /**
  * \brief          Set a pair of delays to watch
  *                 (See \c mbedtls_timing_get_delay().)
@@ -136,15 +94,6 @@ void mbedtls_timing_set_delay( void *data, uint32_t int_ms, uint32_t fin_ms );
  */
 int mbedtls_timing_get_delay( void *data );
 
-#if defined(MBEDTLS_SELF_TEST)
-/**
- * \brief          Checkup routine
- *
- * \return         0 if successful, or 1 if a test failed
- */
-int mbedtls_timing_self_test( int verbose );
-#endif
-
 #ifdef __cplusplus
 }
 #endif