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| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2010-06-29 00:38:20 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2010-06-29 00:38:20 +0000 |
| commit | 5a0b7914c8fb8e3d3846dc0b0747a32100dbef48 (patch) | |
| tree | 9316db1e38bb6c9d010b524995a59aadfe1f38f6 /c/src/lib/libbsp/mips/shared | |
| parent | 2010-06-28 Joel Sherrill <joel.sherrill@oarcorp.com> (diff) | |
| download | rtems-5a0b7914c8fb8e3d3846dc0b0747a32100dbef48.tar.bz2 | |
2010-06-28 Joel Sherrill <joel.sherrill@oarcorp.com>
PR 1573/cpukit
* shared/irq/exception.S: Add a per cpu data structure which contains
the information required by RTEMS for each CPU core. This
encapsulates information such as thread executing, heir, idle and
dispatch needed.
Diffstat (limited to 'c/src/lib/libbsp/mips/shared')
| -rw-r--r-- | c/src/lib/libbsp/mips/shared/irq/exception.S | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/c/src/lib/libbsp/mips/shared/irq/exception.S b/c/src/lib/libbsp/mips/shared/irq/exception.S index 611dc2269c..b8ef3e04cc 100644 --- a/c/src/lib/libbsp/mips/shared/irq/exception.S +++ b/c/src/lib/libbsp/mips/shared/irq/exception.S @@ -35,6 +35,7 @@ #include <bspopts.h> #include <rtems/asm.h> +#include <rtems/score/percpu.h> #include <rtems/mips/iregdef.h> #include <rtems/mips/idtcpu.h> #if BSP_HAS_USC320 @@ -88,9 +89,7 @@ #endif -EXTERN(_ISR_Nest_level, 4) EXTERN(_Thread_Dispatch_disable_level,4) -EXTERN(_Context_Switch_necessary,1) EXTERN(_ISR_Signals_to_thread_executing,1) .extern _Thread_Dispatch .extern _ISR_Vector_table @@ -236,10 +235,10 @@ _chk_int: /* * _ISR_Nest_level++; */ - lw t0,_ISR_Nest_level + lw t0,ISR_NEST_LEVEL NOP add t0,t0,1 - sw t0,_ISR_Nest_level + sw t0,ISR_NEST_LEVEL /* * _Thread_Dispatch_disable_level++; */ @@ -299,10 +298,10 @@ _ISR_Handler_cleanup: /* * --_ISR_Nest_level; */ - lw t2,_ISR_Nest_level + lw t2,ISR_NEST_LEVEL NOP add t2,t2,-1 - sw t2,_ISR_Nest_level + sw t2,ISR_NEST_LEVEL /* * --_Thread_Dispatch_disable_level; */ @@ -324,13 +323,12 @@ _ISR_Handler_cleanup: * restore stack * #endif * - * if ( !_Context_Switch_necessary && !_ISR_Signals_to_thread_executing ) + * if ( !_Context_Switch_necessary ) * goto the label "exit interrupt (simple case)" */ - lb t0,_Context_Switch_necessary - lb t1,_ISR_Signals_to_thread_executing + lb t0,DISPATCH_NEEDED NOP - or t0,t0,t1 + or t0,t0,t0 beq t0,zero,_ISR_Handler_exit NOP |