Timeline for XCHG RAX, RAX: 0x09, what does this code do and how does it work?
Current License: CC BY-SA 4.0
12 events
| when toggle format | what | by | license | comment | |
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| Nov 1, 2018 at 15:00 | history | tweeted | twitter.com/StackReverseEng/status/1058010955882356736 | ||
| Oct 27, 2018 at 1:52 | comment | added | Ben Voigt |
Please put the thing you're asking about (shr and adc into the same register) in the title, not a book title. Book title in the question body is plenty to make searches work.
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| Oct 26, 2018 at 19:47 | vote | accept | Evan Carroll | ||
| Oct 26, 2018 at 19:35 | answer | added | Ian Cook | timeline score: 7 | |
| Oct 26, 2018 at 19:12 | history | edited | NirIzr | CC BY-SA 4.0 |
added 68 characters in body; edited tags
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| Oct 26, 2018 at 19:00 | review | Close votes | |||
| Oct 26, 2018 at 20:30 | |||||
| Oct 26, 2018 at 18:45 | comment | added | Evan Carroll | I've figured out what the code does in the machine, but what's the use of that? What useful higher level thing can it be used to do? | |
| Oct 26, 2018 at 18:44 | comment | added | Evan Carroll | @NirIzr yes, quite clearly what's the answer to the riddle? "Riddle" means there is a something it's trying to demonstrate or do, or it has some utility and there is intent behind it. Any two instructions that the CPU can execute will do something (even if only waste time) why were these two instructions chosen? | |
| Oct 26, 2018 at 18:41 | comment | added | NirIzr | xchg rax,rax's puzzles are indeed nice. Is there a question here, though? | |
| Oct 26, 2018 at 18:34 | history | edited | Evan Carroll | CC BY-SA 4.0 |
added 3 characters in body
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| Oct 26, 2018 at 18:28 | history | edited | Evan Carroll | CC BY-SA 4.0 |
edited tags
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| Oct 26, 2018 at 17:53 | history | asked | Evan Carroll | CC BY-SA 4.0 |