diff options
Diffstat (limited to 'cpukit/score/cpu/i386')
| -rw-r--r-- | cpukit/score/cpu/i386/rtems/score/cpu.h | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/cpukit/score/cpu/i386/rtems/score/cpu.h b/cpukit/score/cpu/i386/rtems/score/cpu.h index e793b3372c..0e47c285bb 100644 --- a/cpukit/score/cpu/i386/rtems/score/cpu.h +++ b/cpukit/score/cpu/i386/rtems/score/cpu.h @@ -6,7 +6,7 @@ * This include file contains information pertaining to the Intel * i386 processor. * - * COPYRIGHT (c) 1989-2008. + * COPYRIGHT (c) 1989-2011. * On-Line Applications Research Corporation (OAR). * * The license and distribution terms for this file may be @@ -270,8 +270,6 @@ typedef enum { /* variables */ SCORE_EXTERN Context_Control_fp _CPU_Null_fp_context; -SCORE_EXTERN void *_CPU_Interrupt_stack_low; -SCORE_EXTERN void *_CPU_Interrupt_stack_high; #endif /* ASM */ @@ -437,6 +435,20 @@ uint32_t _CPU_ISR_Get_level( void ); #define _CPU_Context_Restart_self( _the_context ) \ _CPU_Context_restore( (_the_context) ); +#if defined(RTEMS_SMP) + #define _CPU_Context_switch_to_first_task_smp( _the_context ) \ + _CPU_Context_restore( (_the_context) ); + + /* address space 1 is uncacheable */ + #define SMP_CPU_SWAP( _address, _value, _previous ) \ + do { \ + asm volatile("lock; xchgl %0, %1" : \ + "+m" (*_address), "=a" (_previous) : \ + "1" (_value) : \ + "cc"); \ + } while (0) +#endif + #define _CPU_Context_Fp_start( _base, _offset ) \ ( (void *) _Addresses_Add_offset( (_base), (_offset) ) ) |