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sparc: Add support for interrupt profiling

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This commit is contained in:
Sebastian Huber
2014-03-05 12:07:42 +01:00
parent 53ad908a64
commit de5d6d048d
1 changed files with 23 additions and 2 deletions
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25
c/src/lib/libbsp/sparc/shared/irq_asm.S
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@@ -399,7 +399,14 @@ save_isf:
subcc %l7, 1, %l7 ! outermost interrupt handler?
bnz dont_switch_stacks ! No, then do not switch stacks
nop
#if defined( RTEMS_PROFILING )
sethi %hi(SYM(_SPARC_Counter)), %o5
ld [%o5 + %lo(SYM(_SPARC_Counter))], %l4
ld [%l4], %o5
#else
nop
#endif
ld [%l5 + PER_CPU_INTERRUPT_STACK_HIGH], %sp
dont_switch_stacks:
@@ -453,7 +460,21 @@ dont_fix_pil2:
! WAS LOADED WHEN ISF WAS SAVED!!!
mov %l3, %o0 ! o0 = 1st arg = vector number
call %g4, 0
nop ! delay slot
#if defined( RTEMS_PROFILING )
mov %o5, %l3 ! save interrupt entry instant
cmp %l7, 0
bne profiling_not_outer_most_exit
nop
call SYM(sparc_disable_interrupts), 0
nop
ld [%l4], %o2 ! o2 = 3rd arg = interrupt exit instant
mov %l3, %o1 ! o1 = 2nd arg = interrupt entry instant
call SYM(_Profiling_Outer_most_interrupt_entry_and_exit), 0
mov %l5, %o0 ! o0 = 1st arg = per-CPU control
profiling_not_outer_most_exit:
#else
nop ! delay slot
#endif
/*
* Redisable traps so we can finish up the interrupt processing.