Actual example (with delay slot), 1 jmp:d @ri / call:d @ri instruction, 2 ret:d instruction – FUJITSU MB91460 SERIES FR60 User Manual
Page 146: 3 bcc:d rel instruction, 4 call:d instruction
130
Chapter 7 Branch Instruction
3.Actual Example (with Delay Slot)
3. Actual Example (with Delay Slot)
3.1 JMP:D @Ri / CALL:D @Ri Instruction
Ri referred in JMP:D @Ri / CALL:D @Ri instruction remains intact even if instructions within delay
slot update Ri.
• Example
3.2 RET:D Instruction
RP referred in RET:D instruction remains intact even if instructions within delay slot update RP.
• Example
3.3 Bcc:D rel Instruction
Flag referred in Bcc:D rel instruction also remains unaffected by instructions within delay slot.
• Example
3.4 CALL:D Instruction
When RP is referred using the instruction within delay slot of CALL:D instruction, the data updated
by CALL:D instruction is read out.
• Example
LDI:32
#Label,
R0
JMP:D
@R0
; Branches to Label.
LDI:8
#0,
R0
; Not affect any branched address.
...
RET:D
; Branches to the address previously specified in RP.
MOV
R8,
RP
; Not affect any return operation.
...
ADD
#1,
R0
; Change of flag
BC:D
Overflow
; Branches in accordance with the execution result of instructions above.
ANDCCR #0
; This flag update is not referred in branch instruction above.
...
CALL:D Label
; Branches by updating RP.
MOV
RP,
R0
; Transfers RP based on the execution results of CALL: D above.
...