tui for headless ida https://git.sl0p.foo/ida-tui.git/atom/experiments/fibonacci.bin?h=main 2026-07-26T18:49:30Z 2026-07-26T18:49:30Z blasty blasty@local 2026-07-26T18:49:30Z urn:sha1:781c5eff4218d7ffdc9905f652ca08ce10953e43 An ARM function pointer carries the mode in bit 0: odd means Thumb. A Cortex-M vector table is therefore a list of Thumb entry points, and IDA won't follow them on a headerless image because nothing tells it those words are pointers at all. Shift+T scans forward from the cursor and marks them. 0 functions -> 3 Thumb entries found, 3 disassembled A word only counts when it is odd, lands in a loaded segment, and its target is executable and not already data. The even words in a vector table — the initial stack pointer — fail the first test, which is the point: marking a data word as code corrupts the listing, so a false positive costs more than a miss. The fixture includes an even in-range word and an odd OUT-of-range word to keep that honest. A note on how this started: I recommended this feature, then probed experiments/fibonacci.bin for the signal and found ZERO odd in-range pointers — it's a flat code blob, not a firmware image. Rather than build a detector I couldn't test, I wrote experiments/cortexm.bin: a real vector table pointing at small self-contained Thumb handlers. The first version of that fixture aimed its handlers into the middle of copied code, so two "entries" were really inside one function — the tool was right and the fixture was wrong, which is worth stating because I nearly filed it as a bug. Function creation goes through one _idatui_add_func helper now, shared with define_func_run: add_func(ea) alone fails on freshly-marked code (IDA can't find the end), and the scan hit exactly the same wall `p` did. Status precedence, fixed properly this time. An action's result kept being overwritten by the reload it triggered — cursor moved, filter re-applied, functions re-counted. I patched that at FIVE separate call sites before admitting it's one problem. _status(text, priority=True) now marks a result: it holds the bar for 8s or until the next keypress, and routine chatter can't outrank it. The per-site special cases are gone. tests: +4 thumb (20) — a bare vector table gives IDA nothing, scanning finds exactly the three handlers, the non-pointer words are ignored, and the result survives both the reload and the reindex. 209/0 scenarios, 30/0 blob, 30/0 project UI.