34 lines
2.7 KiB
Markdown
34 lines
2.7 KiB
Markdown
# PPSSPP 1.20.4 patches
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install.sh (component `ppsspp`) applies these to the PPSSPP 1.20.4 release
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source in filename order, then builds only its headless test runner,
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PPSSPPHeadless. The psp gates depend on every one of them.
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| Patch | What it adds | Needed by |
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|---|---|---|
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| 0001-headless-gate-options | Four PPSSPPHeadless options (below) | `bench-psp.sh`, every `verify-psp-*.sh`, `joey-run --port psp --headless` |
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## The options (0001)
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| Option | What it does |
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|---|---|
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| `--strict-mem` | Every memory access is checked, and an unaligned or out-of-range one stops the run, as it raises an address error on a real PSP. The run prints `STRICT-MEM: <kind> exception at <address> (size <n>), pc <pc>` and the emulated call stack; `psp-addr2line -f -e build/psp/elf/NAME.elf <pc>` names the function. Stock headless runs with fast memory and ignores bad accesses, so an unaligned `lw` simply works there. Use it with `--jit-ir` (or `--ir`): PPSSPP checks alignment only in its IR cores, not in the default x86 JIT. |
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| `--snapshot=FILE` | When the run ends (the program exits, or `--timeout` stops it), the PSP's display as a 480x272 PNG. Stock headless can only compare screenshots a test program asks for itself. |
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| `--dump-audio` | Records what the program plays, as PPSSPP's own "dump audio" does: a WAV in the memory stick's `PSP/AUDIO` folder. Stock headless runs with sound off, and the mix is only made with sound on. |
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| `--input=FILE` | Plays an input script: one step a line, `MS buttons NAME...` (the buttons held from then on: up down left right cross circle square triangle ltrigger rtrigger start select, or `none`), `MS analog X Y` (the analog stick, -1 to 1 an axis) or `MS snapshot FILE` (a PNG of the screen then), MS being emulated milliseconds since boot; `#` starts a comment line. Steps run in order at the first 100 ms slice of emulated time at or after their time. Stock headless has no input at all; its WebSocket debugger has, but it listens on every network interface and registers itself with report.ppsspp.org. |
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## Running it
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PPSSPPHeadless keeps the emulated memory stick in `$HOME/.ppsspp`, so the
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gates and joey-run always run it with `HOME` pointing at a scratch folder:
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the program goes in `$HOME/.ppsspp/PSP/GAME/NAME/EBOOT.PBP`, where a PSP
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keeps it, and runs from there (`ms0:/PSP/GAME/NAME`). It runs unthrottled:
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emulated time passes as fast as the host can run it, much faster than real
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time while the program only waits, so a recording made with `--dump-audio`
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grows by many emulated seconds every real second, and `--timeout` (real
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seconds) is no measure of emulated time; an `--input` script is.
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## License
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The patch modifies PPSSPP and contains its code, so it is under PPSSPP's
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license, the GNU GPL v2 or later, not JoeyLib's MIT License.
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