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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2010-12-17 14:51:56 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2010-12-17 14:51:56 +0000 |
commit | 4bc2c9886b5bc5d664e7ce9830c9b4cc1a970d75 (patch) | |
tree | 1bb185b41d7e65e315a0b1bba27b75ab7706aa50 /tools/schedsim/rtems/sched_cpu/cpu.c | |
parent | 2010-12-17 Joel Sherrill <joel.sherrill@oarcorp.com> (diff) | |
download | rtems-4bc2c9886b5bc5d664e7ce9830c9b4cc1a970d75.tar.bz2 |
2010-12-17 Joel Sherrill <joel.sherrill@oarcorp.com>
Jennifer Averett <jennifer.averett@oarcorp.com>
Add RTEMS Scheduler Simulator. This is the RTEMS "port" to and
adapter code to run on GNU/Linux with a fake context switch.
* ChangeLog, Makefile.am, interr.c, rtems_init.c, rtems_sched.h,
wkspace.c, sched_cpu/cpu.c, sched_cpu/cpu_asm.c,
sched_cpu/rtems/asm.h, sched_cpu/rtems/stringto.h,
sched_cpu/rtems/score/cpu.h, sched_cpu/rtems/score/cpu_asm.h,
sched_cpu/rtems/score/cpuopts.h, sched_cpu/rtems/score/no_cpu.h,
sched_cpu/rtems/score/types.h: New files.
Diffstat (limited to '')
-rw-r--r-- | tools/schedsim/rtems/sched_cpu/cpu.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/tools/schedsim/rtems/sched_cpu/cpu.c b/tools/schedsim/rtems/sched_cpu/cpu.c new file mode 100644 index 0000000000..0d2e6f6206 --- /dev/null +++ b/tools/schedsim/rtems/sched_cpu/cpu.c @@ -0,0 +1,169 @@ +/* + * XXX CPU Dependent Source + * + * BASED UPON SOURCE IN RTEMS, MODIFIED FOR SIMULATOR + * + * COPYRIGHT (c) 1989-2010. + * 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. + * + * $Id$ + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <rtems/system.h> +#include <rtems/score/isr.h> +#include <rtems/score/wkspace.h> + +/* _CPU_Initialize + * + * This routine performs processor dependent initialization. + * + * INPUT PARAMETERS: NONE + * + * NO_CPU Specific Information: + * + * XXX document implementation including references if appropriate + */ + +void _CPU_Initialize(void) +{ + /* + * If there is not an easy way to initialize the FP context + * during Context_Initialize, then it is usually easier to + * save an "uninitialized" FP context here and copy it to + * the task's during Context_Initialize. + */ + + /* FP context initialization support goes here */ +} + +/*PAGE + * + * _CPU_ISR_Get_level + * + * NO_CPU Specific Information: + * + * XXX document implementation including references if appropriate + */ + +uint32_t _CPU_ISR_Get_level( void ) +{ + /* + * This routine returns the current interrupt level. + */ + + return 0; +} + +/*PAGE + * + * _CPU_ISR_install_raw_handler + * + * NO_CPU Specific Information: + * + * XXX document implementation including references if appropriate + */ + +void _CPU_ISR_install_raw_handler( + uint32_t vector, + proc_ptr new_handler, + proc_ptr *old_handler +) +{ + /* + * This is where we install the interrupt handler into the "raw" interrupt + * table used by the CPU to dispatch interrupt handlers. + */ +} + +/*PAGE + * + * _CPU_ISR_install_vector + * + * This kernel routine installs the RTEMS handler for the + * specified vector. + * + * Input parameters: + * vector - interrupt vector number + * old_handler - former ISR for this vector number + * new_handler - replacement ISR for this vector number + * + * Output parameters: NONE + * + * + * NO_CPU Specific Information: + * + * XXX document implementation including references if appropriate + */ + +void _CPU_ISR_install_vector( + uint32_t vector, + proc_ptr new_handler, + proc_ptr *old_handler +) +{ + *old_handler = _ISR_Vector_table[ vector ]; + + /* + * If the interrupt vector table is a table of pointer to isr entry + * points, then we need to install the appropriate RTEMS interrupt + * handler for this vector number. + */ + + _CPU_ISR_install_raw_handler( vector, new_handler, old_handler ); + + /* + * We put the actual user ISR address in '_ISR_vector_table'. This will + * be used by the _ISR_Handler so the user gets control. + */ + + _ISR_Vector_table[ vector ] = new_handler; +} + +/*PAGE + * + * _CPU_Install_interrupt_stack + * + * NO_CPU Specific Information: + * + * XXX document implementation including references if appropriate + */ + +void _CPU_Install_interrupt_stack( void ) +{ +} + +/*PAGE + * + * _CPU_Thread_Idle_body + * + * NOTES: + * + * 1. This is the same as the regular CPU independent algorithm. + * + * 2. If you implement this using a "halt", "idle", or "shutdown" + * instruction, then don't forget to put it in an infinite loop. + * + * 3. Be warned. Some processors with onboard DMA have been known + * to stop the DMA if the CPU were put in IDLE mode. This might + * also be a problem with other on-chip peripherals. So use this + * hook with caution. + * + * NO_CPU Specific Information: + * + * XXX document implementation including references if appropriate + */ + +void *_CPU_Thread_Idle_body( uintptr_t ignored ) +{ + + for( ; ; ) + /* insert your "halt" instruction here */ ; +} |