mcrxr (Move to Condition Register from XER) instruction
Purpose
Copies the Summary Overflow bit, Overflow bit, Carry bit, and bit 3 from the Fixed-Point Exception Register into a specified field of the Condition Register.
Syntax
| Bits | Value |
|---|---|
| 0 - 5 | 31 |
| 6 - 8 | BF |
| 9 - 10 | // |
| 11 - 15 | /// |
| 16 - 20 | /// |
| 21 - 30 | 512 |
| 31 | / |
| Item | Description |
|---|---|
| mcrxr | BF |
Description
The mcrxr copies the contents of Fixed-Point Exception Register Field 0 bits 0-3 into Condition Register Field BF and resets Fixed-Point Exception Register Field 0 to 0.
The mcrxr instruction has one syntax form and resets Fixed-Point Exception Register bits 0-3 to 0.
Parameters
| Item | Description |
|---|---|
| BF | Specifies target condition register field where result of operation is stored. |
Examples
The following code copies the Summary Overflow bit, Overflow bit, Carry bit, and bit 3 from the Fixed-Point Exception Register into field 4 of the Condition Register.
# Assume bits 0-3 of the Fixed-Point Exception
# Register are set to b'1110'.
mcrxr 4
# Condition Register Field 4 now holds b'1110'.