Copies the contents of the Machine State Register into a general-purpose register.
The mfmsr instruction copies the contents of the Machine State Register into the target general-purpose register (GPR) RT.
The mfmsr instruction has one syntax form and does not affect the Fixed-Point Exception Register or Condition Register Field 0.
|RT||Specifies target general-purpose register where result of operation is stored.|
The following code copies the contents of the Machine State Register into GPR 4:
mfmsr 4 # GPR 4 now holds a copy of the bit # settings of the Machine State Register.
The mfmsr instruction is privileged only in the PowerPC architecture.
Fixed-Point Move to or from Special-Purpose Registers Instructions.
Functional Differences for POWER and PowerPC Instructions.