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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

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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.

...