diff options
Diffstat (limited to 'schedsim/shell/shared/smp_stub.c')
-rw-r--r-- | schedsim/shell/shared/smp_stub.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/schedsim/shell/shared/smp_stub.c b/schedsim/shell/shared/smp_stub.c new file mode 100644 index 0000000..11cbc7a --- /dev/null +++ b/schedsim/shell/shared/smp_stub.c @@ -0,0 +1,82 @@ +/** + * @file + * RTEMS SMP Support for Scheduler Simulator + */ + +/* + * COPYRIGHT (c) 1989-2014. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + */ + +#if HAVE_CONFIG_H + #include "config.h" +#endif + +#include <rtems.h> +#include <rtems/bspIo.h> +#include <stdlib.h> + +#if RTEMS_SMP + uint32_t Schedsim_Current_cpu; + extern uint32_t Schedsim_Maximum_CPUs_From_Command_Line; +#endif + +uint32_t _CPU_SMP_Initialize( void ) +{ +#if RTEMS_SMP + /* return the number of CPUs */ + return Schedsim_Maximum_CPUs_From_Command_Line; +#else + return 1; +#endif +} + +bool _CPU_SMP_Start_processor( uint32_t cpu_index ) +{ + return true; +} + +void _CPU_SMP_Finalize_initialization( uint32_t cpu_count ) +{ +} + +void _CPU_SMP_Send_interrupt( uint32_t target_processor_index ) +{ +} + +void _CPU_SMP_Processor_event_broadcast( void ) +{ +#if RTEMS_SMP + Per_CPU_Control *cpu = _Per_CPU_Get(); + uint32_t cpu_count = _SMP_Get_processor_count(); + uint32_t cpu_index; + Per_CPU_State state = cpu->state; + + if (state == PER_CPU_STATE_REQUEST_START_MULTITASKING) { + for ( cpu_index = 0 ; cpu_index < cpu_count ; ++cpu_index ) { + cpu = _Per_CPU_Get_by_index( cpu_index ); + state = cpu->state; + if (state == PER_CPU_STATE_INITIAL ) + cpu->state = PER_CPU_STATE_READY_TO_START_MULTITASKING; + } + } +#endif +} + + +void _CPU_SMP_Processor_event_receive( void ) +{ +} + +uint32_t _CPU_SMP_Get_current_processor( void ) +{ +#if RTEMS_SMP + return 0; +#else + return Schedsim_Current_cpu; +#endif +} |