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0 pointsdzdt8y ago0 comments

I guess he means the retpoline. On the 6502 there is no indirect jump instruction, so you need such tricks just to achieve an indirect jump at all.

0 comments

pubby8y ago

There's an indirect jump instruction. It's not very good though, and has a notorious bug with addresses ending in 0xFF.

dzdtOP8y ago

Gah, you're right. Guess my memory is fading. There is indirect JMP, but no indirect JSR or indirect branches. And the indirect JMP as you say is not very useful.

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0 pointsdzdt8y ago0 comments

I guess he means the retpoline. On the 6502 there is no indirect jump instruction, so you need such tricks just to achieve an indirect jump at all.

0 comments

pubby8y ago

There's an indirect jump instruction. It's not very good though, and has a notorious bug with addresses ending in 0xFF.

dzdtOP8y ago

Gah, you're right. Guess my memory is fading. There is indirect JMP, but no indirect JSR or indirect branches. And the indirect JMP as you say is not very useful.

j / k navigate · click thread line to collapse