ARM Cortex-M3 Bedienungsanleitung PDF herunterladen (Seite 29)

29



It takes 3 cycles to complete the branch



Worst case scenario

–

indirect branch taken

Cycle

Address

Operation

0x8000

BX r5

0x8002

SUB

0x8FEE

ORR

0x8FEC

AND

0x8FF0

EOR

0x8004

ORR

1

2

3

4

5

6

7

8

9

F

D

E

F

D

F

E

F

D

E

F

D

F

D

E

F

-

Fetch

D

-

Decode

E

–

Execute

Branch Pipeline Example

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 40 41

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