6 ms·
Who says they don't already support SVE; is it publicly known they support it or not? Especially if the binary doesn't have to be recompiled you'd never know wh
by dirtypersian 6y ago
Who says they don't already support SVE; is it publicly known they support it or not? Especially if the binary doesn't have to be recompiled you'd never know whether they implemented it or not right?
- bwasti 6y agoYou can just try the instructions with an off-the-shelf assembler. They're not supported.
- andy_ppp 6y agoI’m kind of interested about what happens if you throw random opcodes at processors now!
- dirtypersian 6y agoI would guess the processor would just cause an exception/interrupt and it would just call an OS level exception/interrupt handler which would probably tell the user what the exception/interrupt was that occured; in this case an unsupported instruction.
- nicoburns 6y agoI believe most processors have undocumented opcodes. Often used for internal debugging or similar.
- aw1621107 6y agoYou might be interested in sandsifter [0], which does precisely that! [0]: https://github.com/xoreaxeaxeax/sandsifter https://github.com/xoreaxeaxeax/sandsifter
- grishka 6y agoYour program will crash with SIGILL.
- saagarjha 6y agoUnless you have to toggle an MSR, of course…