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Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
This commit is contained in:
Gaurav Aggarwal 2024-01-28 09:26:31 +00:00
parent 4ab5a53e33
commit 87cb3ea46f
1 changed files with 30 additions and 22 deletions
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52
portable/MSVC-MingW/portmacro.h
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@ -121,42 +121,50 @@ void vPortExitCritical( void );
#define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
#endif
/*-----------------------------------------------------------*/
#if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
/* Check the configuration. */
/* Check the configuration. */
#if ( configMAX_PRIORITIES > 32 )
#error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32. It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
#endif
/* Store/clear the ready priorities in a bit map. */
/* Store/clear the ready priorities in a bit map. */
#define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( ( ( UBaseType_t ) 1 ) << ( uxPriority ) )
#define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( ( ( UBaseType_t ) 1 ) << ( uxPriority ) )
/*-----------------------------------------------------------*/
#ifdef __GNUC__
#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) \
__asm volatile ( "bsr %1, %0\n\t" \
: "=r" ( uxTopPriority ) : "rm" ( uxReadyPriorities ) : "cc" )
#else
/* BitScanReverse returns the bit position of the most significant '1'
* in the word. */
#if defined( __x86_64__ ) || defined( _M_X64 )
#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) \
do \
{ \
DWORD ulTopPriority; \
_BitScanReverse64( &ulTopPriority, ( uxReadyPriorities ) ); \
uxTopPriority = ulTopPriority; \
} while( 0 )
#else
#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) _BitScanReverse( ( DWORD * ) &( uxTopPriority ), ( uxReadyPriorities ) )
#endif
#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) \
__asm volatile ( "bsr %1, %0\n\t" \
: "=r" ( uxTopPriority ) \
: "rm" ( uxReadyPriorities ) \
: "cc" )
#else /* __GNUC__ */
/* BitScanReverse returns the bit position of the most significant '1'
* in the word. */
#if defined( __x86_64__ ) || defined( _M_X64 )
#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) \
do \
{ \
DWORD ulTopPriority; \
_BitScanReverse64( &ulTopPriority, ( uxReadyPriorities ) ); \
uxTopPriority = ulTopPriority; \
} while( 0 )
#else /* #if defined( __x86_64__ ) || defined( _M_X64 ) */
#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) _BitScanReverse( ( DWORD * ) &( uxTopPriority ), ( uxReadyPriorities ) )
#endif /* #if defined( __x86_64__ ) || defined( _M_X64 ) */
#endif /* __GNUC__ */
#endif /* taskRECORD_READY_PRIORITY */
#endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
#ifndef __GNUC__
__pragma( warning( disable:4211 ) ) /* Nonstandard extension used, as extern is only nonstandard to MSVC. */