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| author | Till Straumann <strauman@slac.stanford.edu> | 2009-10-29 16:29:46 +0000 |
|---|---|---|
| committer | Till Straumann <strauman@slac.stanford.edu> | 2009-10-29 16:29:46 +0000 |
| commit | b01d7c7eebb94896e56335a8775f2ce3f7923df4 (patch) | |
| tree | c55997142f8ee3877bf9ba9080009bcc4282ad4e | |
| parent | 2009-10-29 Till Straumann <strauman@slac.stanford.edu> (diff) | |
| download | rtems-b01d7c7eebb94896e56335a8775f2ce3f7923df4.tar.bz2 | |
2009-10-29 Till Straumann <strauman@slac.stanford.edu>
* rtems/score/cpu.h: Define _CPU_Interrupt_stack_setup() macro
which reserves space for the 'vector' arg to _C_dispatch_isr()
routine and aligns the irq stack to CPU_STACK_ALIGNMENT.
| -rw-r--r-- | cpukit/score/cpu/i386/ChangeLog | 6 | ||||
| -rw-r--r-- | cpukit/score/cpu/i386/rtems/score/cpu.h | 10 |
2 files changed, 16 insertions, 0 deletions
diff --git a/cpukit/score/cpu/i386/ChangeLog b/cpukit/score/cpu/i386/ChangeLog index 82b0f810ad..012c4038f5 100644 --- a/cpukit/score/cpu/i386/ChangeLog +++ b/cpukit/score/cpu/i386/ChangeLog @@ -1,3 +1,9 @@ +2009-10-29 Till Straumann <strauman@slac.stanford.edu> + + * rtems/score/cpu.h: Define _CPU_Interrupt_stack_setup() macro + which reserves space for the 'vector' arg to _C_dispatch_isr() + routine and aligns the irq stack to CPU_STACK_ALIGNMENT. + 2009-10-28 Till Straumann <strauman@slac.stanford.edu> * rtems/score/cpu.h: Replaced misleading typedef of diff --git a/cpukit/score/cpu/i386/rtems/score/cpu.h b/cpukit/score/cpu/i386/rtems/score/cpu.h index 354166b336..c8218d1a04 100644 --- a/cpukit/score/cpu/i386/rtems/score/cpu.h +++ b/cpukit/score/cpu/i386/rtems/score/cpu.h @@ -287,6 +287,16 @@ SCORE_EXTERN void *_CPU_Interrupt_stack_high; uint32_t _CPU_ISR_Get_level( void ); +/* Make sure interrupt stack has space for ISR + * 'vector' arg at the top and that it is aligned + * properly. + */ + +#define _CPU_Interrupt_stack_setup( _lo, _hi ) \ + do { \ + _hi = (void*)(((uintptr_t)(_hi) - 4) & ~ (CPU_STACK_ALIGNMENT - 1)); \ + } while (0) + #endif /* ASM */ /* end of ISR handler macros */ |