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Return From Critical Interrupt
PPC440x5 CPU Core User’s Manual Preliminary
Page 396 of 589
instrset.fm.
September 12, 2002
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Return From Critical Interrupt
(PC) ← (CSRR0)
(MSR
) ← (CSRR1)
This instruction is used to return from a critical interrupt.
The program counter (PC) is restored with the contents of CSRR0 and the MSR is restored with the contents
of CSRR1.
Instruction execution returns to the address contained in the PC.
Registers Altered
• MSR
Programming Note
Execution of this instruction is privileged and context-synchronizing (see Context Synchronization on
page 82).
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