4.11.2 Call Privileged Architecture Library

Format:

CALL_PAL

fnc.ir

!PAL format

Operation:

{Stall instruction issuing until all prior instructions are guaranteed to complete without incurring exceptions.} {Trap to PALcode.}

Exceptions:

None

Instruction mnemonics:

CALL_PAL

Call Privileged Architecture Library

Qualifiers:

None

Description:

The CALL_PAL instruction is not issued until all previous instructions are guaranteed to com- plete without exceptions. If an exception occurs, the continuation PC in the exception stack frame points to the CALL_PAL instruction. The CALL_PAL instruction causes a trap to PALcode.

Instruction Descriptions 4–135

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Compaq ECQD2KCTE manual Call Privileged Architecture Library, Callpal