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mfc0

Operands

$reg, regnum

Move from Coprocessor 0 : Reads a Coprocessor 0 (CP0) control register and places its value in general-purpose register $t1. CP0 registers hold exception/interrupt state: register 8 (BadVAddr), 12 (Status), 13 (Cause), 14 (EPC), etc.

Variants

  • Move from Coprocessor 0 : Reads a Coprocessor 0 (CP0) control register and places its value in general-purpose register $t1. CP0 registers hold exception/interrupt state: register 8 (BadVAddr), 12 (Status), 13 (Cause), 14 (EPC), etc. mfc0 $t1,$8
# Set CP0 vaddr register 8 to 0x1234, then read it. Inspect $t0: 0x1234.
li $t1, 0x1234
mtc0 $t1, $8
mfc0 $t0, $8