top | item 47125053 (no title) Kiboneu | 6 days ago To be clear and towards the OP's comment about ESP32 ISA -- Xtensa isn't really a self contained architecture, it can be customized (extended) by the vendor. The ISA can be extended for these customizations. ESP32 is one customization of it. discuss order hn newest sitkack|6 days ago It was only opaquely supported by GCC, no LLVM, so no Rust.It is a cool design, but it was a major PITA for awhile. Xtensa is parametric so every instance of a cpu has a custom instruction set. Kiboneu|5 days ago Heh. Yep. Reverse engineering firmware for a custom xtensa cpu is also a lot of “fun” (and also fun).
sitkack|6 days ago It was only opaquely supported by GCC, no LLVM, so no Rust.It is a cool design, but it was a major PITA for awhile. Xtensa is parametric so every instance of a cpu has a custom instruction set. Kiboneu|5 days ago Heh. Yep. Reverse engineering firmware for a custom xtensa cpu is also a lot of “fun” (and also fun).
Kiboneu|5 days ago Heh. Yep. Reverse engineering firmware for a custom xtensa cpu is also a lot of “fun” (and also fun).
sitkack|6 days ago
It is a cool design, but it was a major PITA for awhile. Xtensa is parametric so every instance of a cpu has a custom instruction set.
Kiboneu|5 days ago