5.3.2. Undefined Instruction exception

The PTM upgrades the Undefined Instruction to a waypoint instruction and outputs the following trace:

  1. A waypoint update packet, indicating the address of the Undefined Instruction that the processor committed for execution.

  2. An exception branch address packet that identifies the Undefined Instruction exception and gives the address of the exception vector.

An instruction might cause an Undefined Instruction exception only if it passes its condition code check. If such an instruction fails its condition code check, the PTM does not upgrade it to a waypoint instruction.

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