Method and apparatus for counting execution of specific instructions and ...

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100 102 108 104 116
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126 in/TEGEEAARDDAQMER‘ MODEM MEMORY
128 \ \ \
120 122 124
402 4 404
\ /
PERFORMANCE
CACHE INDICATOR
SHADOW CACHE

¢ $ %/3°“ I PROCESSOR

\ 400

210 I PIVICI I I PIVIC2 I I IVIIVICRO I I MIVICRO I MON“-OR UN|-|-
— / / \ \ 240 UNIT
241 242 243 244 _

FIG. Z < SYSTEM BUS \ >

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ZI J0 Z 199lIS

ZH I69‘L‘E6‘L Sfl

FIG, 5 |_\SLOT2 SLOTT fll\SLOT0 /[U TEMPLATE I 41

F

41 41 5 \
512 502 510 508

506 514 504
FIG. 7
FIG. 6A
-i— 700 \| RECEIVE BUNDLE I

600\ SUBROUTINE I

602 ~l

702 IDENTIFY AN INSTRUCTION IN THE BUNDLE ~l 604 704 /{ii PERFORMANCE 606 INDICATOR ASSOCIATED WITH THE INSTRUCTION -—-——— PRESENT‘? SEND SIGNAL T0 FIG 63 706 PERFORMANCE MONITOR UNIT

610 612 614

708,1 PROCESS lNSTRUCTl0N |
DATA
MORE
UNPROCESSED INSTRUCTIONS
IN

FIG. 9

no ST START 900 T0 ACCESS A MEMORY LOCATION 80°\I RECEIVE BUNDLE I I PERFORMANCE 802 IDENTIFY AN INSTRUCTION INDICATOR ASSOCIATED IN THE BUNDLE WITH THE MEMORY

SEND SIGNAL TO 805 INTERRUPT UNIT

808/I PROCESS INSTRUCTION I

MORE YES 10
UNPROCESSED INSTRUCTIONS
IN E?

BUNDL START

1000 \I RECEIVE SIGNAL PROBE I

I

COUNT EVENTS ASSOCIATED 1002 WITH INSTRUCTION BEING

PROCESSED

1102

SIGNAL RESET TO STOP YES 1105 COUNTING EVENTS 1308 /I PERFORM SELECTED ACTIONI

1200

FIG. I3

1300 necave INSTRUCTIONS
\ ASSOCIATED WITH
PERFORMANCE INDICATOR

I

I 3OZ \ IDENTIFY THRESHOLD
FOR INSTRUCTION

IM

l3O4\I MONITOR CYCLES

SEND SIGNAL TO SEND SIGNAL TO PERFORMANCE MONITOR PERFORMANCE MONITOR I 204 UNIT TO ENABLE UNIT TO DISABLE

COUNTING OF EVENTS COUNTING OF EVENTS

3