libretroadmin b52683a775 EE: the VU1 worker in C89 ...

MTVU is a C unit. VU_Thread is a plain struct, still the one global
vu1Thread, and its methods are mtvu_* functions with C linkage. The
VU recompilers, VMManager and the frontend call those functions, and
the interrupt flags are MTVU_INT_* macros. Without a constructor, the
worker's eventcounts are made by mtvu_init in retro_init and freed by
mtvu_shutdown in retro_deinit. The recompiler stack size is
VM_EMU_THREAD_STACK_SIZE in VMHost.h. EECycleSkip is mirrored as
emu_hot_ee_cycle_skip next to the cycle rate, so starting a VU1
program reads a word instead of EmuConfig. A savestate load no longer
queues the VI and VF register writes: they copied vuRegs[1] onto
itself, and at a size in words passed as bytes.

tests/mtvu links the real MTVU.c against stubs for VU1, the unpacker
and the GIF. Over two init/shutdown cycles it checks:
- memory writes and the program after them, in order;
- an unpack with VIF1's registers;
- 2048 programs through a ring that wraps;
- SIGNAL, FINISH and LABEL handed back to the EE.
It passes under ASan, UBSan and TSan, and as a mingw-w64 build.

2026-11-10 21:26:10 +01:00

..

build.sh

EE: the VU1 worker in C89

2026-11-10 21:26:10 +01:00

main.c

EE: the VU1 worker in C89

2026-11-10 21:26:10 +01:00