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score: Add RTEMS_OBFUSCATE_POINTER()

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Update #2790.
This commit is contained in:
Sebastian Huber
2016-10-12 10:44:51 +02:00
parent 2ba0c0358d
commit 97eaefd493
1 changed files with 11 additions and 1 deletions
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12
cpukit/score/include/rtems/score/basedefs.h
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@@ -10,7 +10,7 @@
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* Copyright (c) 2010-2015 embedded brains GmbH.
* Copyright (c) 2010, 2016 embedded brains GmbH.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
@@ -221,6 +221,16 @@
#define RTEMS_PRINTFLIKE( _format_pos, _ap_pos )
#endif
/**
* @brief Obfuscates the pointer so that the compiler cannot perform
* optimizations based on the pointer value.
*/
#if defined(__GNUC__)
#define RTEMS_OBFUSCATE_POINTER( _ptr ) __asm__("" : "+r" (_ptr))
#else
#define RTEMS_OBFUSCATE_POINTER( _ptr ) (void) (_ptr)
#endif
#if __cplusplus >= 201103L
#define RTEMS_STATIC_ASSERT(cond, msg) \
static_assert(cond, # msg)