This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| The value in question is a signed short and starts out in r18. | |
| 1. 82020478 B241FF30 sth r18,-0D0h(r1) | |
| 2. 8202047C 7DF21670 srawi r18,r15,2 | |
| 3. 82020480 7E0F0734 extsh r15,r16 | |
| 4. 82020484 A201FF30 lhz r16,-0D0h(r1) | |
| 5. 82020488 B221FF30 sth r17,-0D0h(r1) | |
| 6. 8202048C 7D4A0734 extsh r10,r10 | |
| 7. 82020490 7E111670 srawi r17,r16,2 | |
| 1. spills it to memory. | |
| 4. reloads it from memory (zero-extended). | |
| 7. does an arithmetic right shift - note r16 didn't get sign-extended (extsh). |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment