Assembler Language Reference

mfocrf (Move from One Condition Register Field) Instruction

Purpose

Copies the contents of one Condition Register field into a general-purpose register.

Syntax

Bits	Value
0-5	31
6-10	RT
11	1
12-19	FXM
20	///
21-30	19
31	///

mfocrf

RT, FXM

Description

The mfocrf instruction copies the contents of one Condition Register field specified by the field mask FXM into the target general-purpose register (GPR) RT.

Field mask FXM is defined as follows:

Bit	Description
12	CR 00-03 is copied into GPR RS 00-03.
13	CR 04-07 is copied into GPR RS 04-07.
14	CR 08-11 is copied into GPR RS 08-11.
15	CR 12-15 is copied into GPR RS 12-15.
16	CR 16-19 is copied into GPR RS 16-19.
17	CR 20-23 is copied into GPR RS 20-23.
18	CR 24-27 is copied into GPR RS 24-27.
19	CR 28-31 is copied into GPR RS 28-31.

The mfocrf instruction has one syntax form and does not affect the Fixed-Point Exception Register.

Parameters

RT	Specifies target general-purpose register where result of operation is stored.
FXM	Specifies field mask. Only one bit may be specified.

Examples

The following code copies the Condition Register field 3 into GPR 6:

# Assume the Condition Register contains 0x4055 F605.
# Field 3 (0x10 = b'0001 0000')
mfocrf 6, 0x10
# GPR 6 now contains 0x0005 0000.

Related Information

Branch Processor.

Fixed-Point Move to or from Special-Purpose Registers Instructions.