mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 02:11:36 -04:00
Matthew Stanley
b9716154f0
The recompiler and runtime now build and run natively on macOS (Apple
Silicon & Intel) and Linux, alongside Windows. The recompiled BIOS boots to
the PlayStation logo, and Tomba boots into gameplay with working memory-card
save/load — the previously Windows-only path.
Core change — the BIOS thread scheduler:
- runtime/src/psx_fiber.{h,c} (new): one cooperative-fiber API, backed by
Win32 Fibers on Windows and ucontext (makecontext/swapcontext) on POSIX,
with a GetCurrentFiber analog (psx_fiber_current).
- traps.c: the BIOS thread switcher now uses psx_fiber_* on every platform.
The old non-Windows setjmp/longjmp fallback is removed — it ran target
threads nested on the caller's C stack and so couldn't resume an arbitrary
suspended thread, which hung the BIOS CD-boot WaitEvent handoff. Real
per-thread stacks (fibers/ucontext) fix it.
- interrupts.c: the exception-deferral path (g_exception_owner_fiber,
deferred_exception_longjmp) is now fiber-based on all platforms via the
same abstraction, instead of #ifdef _WIN32.
Cross-platform build fixes:
- recompiler/CMakeLists.txt: vendored fmt 9.1.0 force-enables consteval on
Apple clang (the __cpp_consteval clause overrides its own Apple exclusion),
which clang 21 then rejects; force FMT_CONSTEVAL empty on non-MSVC.
- runtime.cmake: add psx_fiber.c; add pkg-config's SDL2_LIBRARY_DIRS so
-lSDL2 resolves outside default paths (Homebrew /opt/homebrew/lib).
- crash_trace.c: include <stdarg.h> (not pulled in transitively off Windows).
- main.cpp: the forced "opengl" render-driver hint (a Windows-GDI-freeze
workaround) is now Windows-only so macOS uses Metal; create the renderer
with PRESENTVSYNC; SDL_RenderSetLogicalSize(640,480) so fullscreen
letterboxes; add an F11 / Alt+Enter / Cmd+F fullscreen toggle.
Verified: SCPH1001 BIOS boots to the Sony logo on Apple Silicon, and Tomba!
(SCUS-94236) boots into gameplay with memory-card saves persisting across
relaunches. Gamepad (SDL_GameController) was already cross-platform.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
56 lines
2.0 KiB
C
56 lines
2.0 KiB
C
/*
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* psx_fiber.h — cross-platform cooperative fibers for the BIOS thread
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* scheduler (traps.c) and exception-deferral (interrupts.c).
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*
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* The PS1 BIOS manages its own threads (TCBs) and switches between them
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* cooperatively; the runtime mirrors each BIOS thread with a host fiber so
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* the recompiled C for a suspended thread keeps its own native call stack
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* across a ChangeThread. The CD-boot handoff in particular depends on this:
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* a thread issues a CD command, WaitEvent-blocks, and the scheduler must be
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* able to resume a *different* thread's previously-suspended stack — which
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* requires real separate stacks, not nested dispatch.
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*
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* Backends:
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* - Windows: the Win32 Fiber API (ConvertThreadToFiber / CreateFiber /
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* SwitchToFiber / DeleteFiber). Behavior is identical to the original.
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* - POSIX (macOS/Linux): ucontext (makecontext / swapcontext).
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*
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* Cooperative, single-threaded: exactly one fiber runs at a time and all
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* switches are explicit. psx_fiber_current() is the GetCurrentFiber analog.
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*/
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#ifndef PSX_FIBER_H
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#define PSX_FIBER_H
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef void* psx_fiber_t;
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typedef void (*psx_fiber_entry)(void* arg);
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/* Make the current thread a fiber so it can switch to others. Idempotent;
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* returns the handle for the current thread's fiber. Call before the first
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* psx_fiber_switch on this thread. */
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psx_fiber_t psx_fiber_convert_thread(void);
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/* The currently-executing fiber (GetCurrentFiber analog). */
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psx_fiber_t psx_fiber_current(void);
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/* Create a fiber with its own stack. It does not run until switched to. */
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psx_fiber_t psx_fiber_create(size_t stack_size, psx_fiber_entry entry, void* arg);
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/* Switch execution to target; the caller is suspended until switched back. */
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void psx_fiber_switch(psx_fiber_t target);
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/* Destroy a fiber created by psx_fiber_create and free its stack. Must not
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* be the currently-running fiber. */
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void psx_fiber_destroy(psx_fiber_t fiber);
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#ifdef __cplusplus
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}
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#endif
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#endif /* PSX_FIBER_H */
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