diff options
| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2010-06-29 00:34:00 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2010-06-29 00:34:00 +0000 |
| commit | 6d42b4c60a4ac686489b793d5df2047c735c7c94 (patch) | |
| tree | 5f8d9f59891f94ecdece01e44100a0bfd56a2e22 /cpukit/score/cpu/m68k/cpu_asm.S | |
| parent | 2010-06-28 Joel Sherrill <joel.sherrill@oarcorp.com> (diff) | |
| download | rtems-6d42b4c60a4ac686489b793d5df2047c735c7c94.tar.bz2 | |
2010-06-28 Joel Sherrill <joel.sherrill@oarcorp.com>
PR 1573/cpukit
* cpu_asm.S, rtems/score/cpu.h: 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 '')
| -rw-r--r-- | cpukit/score/cpu/m68k/cpu_asm.S | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/cpukit/score/cpu/m68k/cpu_asm.S b/cpukit/score/cpu/m68k/cpu_asm.S index a8bbdef2ea..afc6ad2878 100644 --- a/cpukit/score/cpu/m68k/cpu_asm.S +++ b/cpukit/score/cpu/m68k/cpu_asm.S @@ -19,6 +19,7 @@ #endif #include <rtems/asm.h> +#include <rtems/score/percpu.h> /* void _CPU_Context_switch( run_context, heir_context ) * @@ -263,8 +264,8 @@ SYM (_ISR_Handler): #if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == 1 ) | Make a0 point just above interrupt stack - movel _CPU_Interrupt_stack_high,a0 - cmpl _CPU_Interrupt_stack_low,a7 | stack below interrupt stack? + movel INTERRUPT_STACK_HIGH,a0 + cmpl INTERRUPT_STACK_LOW,a7 | stack below interrupt stack? bcs.b 1f | yes, switch to interrupt stack cmpl a0,a7 | stack above interrupt stack? bcs.b 2f | no, do not switch stacks @@ -276,7 +277,7 @@ SYM (_ISR_Handler): 2: #endif /* CPU_HAS_SOFTWARE_INTERRUPT_STACK == 1 */ - addql #1,SYM(_ISR_Nest_level) | one nest level deeper + addql #1,ISR_NEST_LEVEL | one nest level deeper movel SYM (_ISR_Vector_table),a0 | a0= base of RTEMS table #if ( M68K_HAS_PREINDEXING == 1 ) @@ -290,10 +291,10 @@ SYM (_ISR_Handler): movel d0,a7@- | push vector number jbsr a0@ | invoke the user ISR addql #4,a7 | remove vector number - subql #1,SYM(_ISR_Nest_level) | Reduce interrupt-nesting count + subql #1,ISR_NEST_LEVEL | Reduce interrupt-nesting count #if ( CPU_HAS_SOFTWARE_INTERRUPT_STACK == 1 ) - movel _CPU_Interrupt_stack_high,a0 + movel INTERRUPT_STACK_HIGH,a0 subql #4,a0 cmpl a0,a7 | At top of interrupt stack? bne.b 1f | No, do not restore task stack pointer @@ -322,16 +323,11 @@ SYM (_ISR_Handler): beq.b exit #endif #endif - tstb SYM (_Context_Switch_necessary) + tstb DISPATCH_NEEDED | Is thread switch necessary? - bne.b bframe | Yes, invoke dispatcher - - tstb SYM (_ISR_Signals_to_thread_executing) - | signals sent to Run_thread - | while in interrupt handler? beq.b exit | No, then exit -bframe: clrb SYM (_ISR_Signals_to_thread_executing) +bframe: | If sent, will be processed #if ( M68K_HAS_SEPARATE_STACKS == 1 ) movec msp,a0 | a0 = master stack pointer |