Update README.md

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Luke Street 2025-10-04 13:55:08 -06:00
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# Repository Guidelines
## Project Structure & Module Organization
- Core launcher logic lives in `main.cpp`, `loader.cpp`, `files.cpp`, `handles.cpp` and `module_registry.cpp`; shared interfaces in headers near them.
- Windows API shims reside in `dll/`, grouped by emulated DLL name; keep new APIs in the matching file instead of creating ad-hoc helpers.
- Reusable utilities sit in `strutil.*`, `processes.*` and `resources.*`; prefer extending these before introducing new singleton modules.
- Core loader logic and headers live in `src/`.
- Windows API shims reside in `dll/`; source files grouped by DLL (e.g. `dll/kernel32/`).
- Sample fixtures for exercising the loader live in `test/`.
## Build, Test, and Development Commands
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- `clang-format -i path/to/file.cpp` and `clang-tidy path/to/file.cpp -p build` keep contributions aligned with the repo's tooling.
## Coding Style & Naming Conventions
- Formatting follows `.clang-format` (LLVM base, tabbed indentation width 4, 120 column limit); never hand-wrap differently.
- Use PascalCase for Win32 entry points, camelCase for internal helpers, SCREAMING_SNAKE_CASE for Win32 constants, kCamelCase for internal constants, and g_camelCase for globals.
- Formatting follows `.clang-format` (LLVM base, tabbed indentation width 4, 120 column limit).
- Use PascalCase for Win32 entry points, camelCase for internal helpers, SCREAMING_SNAKE_CASE for Win32 constants, kCamelCase for internal constants, g_camelCase for globals, and mPascalCase for member variables.
- Put static functions and variables in anonymous namespaces at the top of the file.
- Prefer scoping types to the header or source file that uses them; avoid polluting `common.h` unless widely shared.
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- All fixtures must self-assert; use `test_assert.h` helpers so `ctest` fails on mismatched WinAPI behaviour.
- Update `CMakeLists.txt` to add new fixture sources.
- Rebuild, then run tests with `ctest --test-dir build --output-on-failure`.
- ALWAYS run tests against `wine` manually to confirm expected behaviour. If `wine` fails, the expected behaviour is likely wrong. (`wine` is not perfect, but we can assume it's closer to Windows than we are.)
- ALWAYS run tests against `wine` manually to confirm expected behaviour. If `wine` fails, the expected behaviour is VERY LIKELY wrong. (`wine` is not perfect, but we can assume it's closer to Windows than we are.)
## Debugging Workflow
- Reproduce crashes under `gdb` (or `lldb`) with `-q -batch` to capture backtraces, register state, and the faulting instruction without interactive prompts.
- Enable `WIBO_DEBUG=1` and output to a log (i.e. `&>/tmp/wibo.log`) when running the guest binary; loader traces often pinpoint missing imports, resource lookups, or API shims that misbehave. The answer is usually in the last few dozen lines before the crash.
- Enable `WIBO_DEBUG=1` or `-D` and output to a log (i.e. `&>/tmp/wibo.log`) when running the guest binary; loader traces often pinpoint missing imports, resource lookups, or API shims that misbehave. The answer is usually in the last few dozen lines before the crash.
- Inspect relevant source right away—most issues stem from stubbed shims in `dll/`.
- Missing stubs generally do _not_ cause a crash; we return valid function pointers for unknown imports. Only when the missing stub is _called_ do we abort with a message. Therefore, don't preemptively add stubs for every missing import; wait until the binary actually calls it.

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# wibo
A minimal, low-fuss wrapper that can run really simple command-line 32-bit Windows binaries on Linux - with less faff and fewer dependencies than WINE.
Don't run this on any untrusted executables, I implore you. (Or probably just don't run it at all... :p)
A minimal, low-fuss wrapper that can run simple command-line 32-bit Windows binaries on 32-bit Linux - developed to run Windows compilers faster than Wine.
## Building
```sh
cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Debug
cmake --build build --target wibo
cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Debug -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DBUILD_TESTING=ON
cmake --build build
```
Set `-DCMAKE_BUILD_TYPE=Release` to produce an optimized binary instead.
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Self-checking Windows fixtures run through CTest. They require a 32-bit MinGW cross toolchain (`i686-w64-mingw32-gcc` and `i686-w64-mingw32-windres`).
With the toolchain installed:
```sh
cmake -B build -DBUILD_TESTING=ON
cmake --build build
ctest --test-dir build --output-on-failure
```
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---
Rough to-do list:
- Implement more APIs
---
Related projects:
* [taviso/loadlibrary](https://github.com/taviso/loadlibrary)
* [evmar/retrowin32](https://github.com/evmar/retrowin32)
See also:
* [taviso/loadlibrary](https://github.com/taviso/loadlibrary) - Initial inspiration for this project.
* [evmar/retrowin32](https://github.com/evmar/retrowin32) - A similar project with different goals and architecture.
* [decomp.me](https://decomp.me) - Collaborative decompilation website; uses wibo to run Windows compilers.