RTOS/rtems
1
0
Fork 0
forked from Imagelibrary/rtems
Code Pull Requests Activity

sparc: Rework CPU counter support

Browse Source 
Rework CPU counter support to enable use of the GR740 up-counter via
%asr22 and %asr23.
This commit is contained in:
Sebastian Huber
2016-06-20 10:08:39 +02:00
parent 4c927c7900
commit 9460333e99
10 changed files with 211 additions and 100 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
c/src/lib/libbsp/sparc/shared/irq_asm.S
View File

@@ -451,10 +451,12 @@ dont_do_the_window:
subcc %l7, 1, %l7 ! outermost interrupt handler?
bnz dont_switch_stacks ! No, then do not switch stacks
#if defined( RTEMS_PROFILING )
sethi %hi(SYM(_SPARC_Counter)), %o5
ld [%o5 + %lo(SYM(_SPARC_Counter))], %l4
ld [%l4], %o5
#if defined(RTEMS_PROFILING)
sethi %hi(_SPARC_Counter), %o5
ld [%o5 + %lo(_SPARC_Counter)], %l4
call %l4, 0
nop
mov %o0, %o5
#else
nop
#endif
@@ -536,13 +538,15 @@ pil_fixed:
! WAS LOADED WHEN ISF WAS SAVED!!!
mov %l3, %o0 ! o0 = 1st arg = vector number
call %g4, 0
#if defined( RTEMS_PROFILING )
#if defined(RTEMS_PROFILING)
mov %o5, %l3 ! save interrupt entry instant
cmp %l7, 0
bne profiling_not_outer_most_exit
nop
ta SPARC_SWTRAP_IRQDIS ! Call interrupt disable trap handler
ld [%l4], %o2 ! o2 = 3rd arg = interrupt exit instant
call %l4, 0 ! Call _SPARC_Counter.counter_read
nop
mov %o0, %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 %g6, %o0 ! o0 = 1st arg = per-CPU control