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score: Optimize _TLS_Get_size()

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This commit is contained in:
Sebastian Huber
2019-12-07 20:30:30 +01:00
parent bb99cd0d83
commit cc466a53a1
1 changed files with 9 additions and 4 deletions
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13
cpukit/include/rtems/score/tls.h
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@@ -87,15 +87,20 @@ typedef struct {
/**
* @brief Gets the TLS size.
*
* @return the TLS size.
* @return The TLS size.
*/
static inline uintptr_t _TLS_Get_size( void )
{
uintptr_t size;
/*
* Do not use _TLS_Size here since this will lead GCC to assume that this
* symbol is not 0 and the tests for 0 will be optimized away.
* We must be careful with using _TLS_Size here since this could lead GCC to
* assume that this symbol is not 0 and the tests for 0 will be optimized
* away.
*/
return (uintptr_t) _TLS_BSS_end - (uintptr_t) _TLS_Data_begin;
size = (uintptr_t) _TLS_Size;
RTEMS_OBFUSCATE_VARIABLE( size );
return size;
}
/**