Adds support for systems with host pages > 4KB (some Linux distros,
MacOS) where guest 4KB page operations can't map 1:1 to host mprotect calls.
No-op on windows and posix systems with 4KB page size.
Co-authored-by: Will Martin <wmarti@bu.edu>
When emit_inline_mmio_checks is enabled, the x64 backend emits
explicit address range checks (0x7FC00000–0x7FFFFFFF) before I32 memory
ops and routes hits through MMIOAwareLoad/Store directly, avoiding the
cost of trapping access violations for MMIO regions. The MMIO page
commit in AddVirtualMappedRange is skipped in this mode since accesses
are handled inline rather than via exception.
version.h is now found via CMAKE_BINARY_DIR on the include path instead
of a hardcoded "build/version.h" path. This allows out-of-tree and
multi-config builds to each generate and find their own version header
without colliding.
When SuspendThread is called on an already-suspended thread, it would send
another pthread_kill signal, which would nest signal handlers and create
multiple outstanding sem_wait calls while Resume only posts once when count
reaches 0. Instead we increment suspend count and skip redundant signal.
- add SIGTRAP handling
- remove per-test dots and print per suite instead
- refactor test loop from collecting all tests to iterating suites
- fix logging up output
d37c22aa replaced skylander with the new portal HID library but
missed updating three CMakeLists.txt files. No replacement needed
since xenia-hid already links xenia-hid-portal transitively.
For 4xMSAA 32bpp, samples 2/3 add a +4 byte horizontal offset to the
EDRAM address. The old typed buffer code (Buffer<uint4>) implicitly
truncated this offset via integer division (>> 2), and the .yw swizzle
compensated by selecting odd elements within the aligned uint4 load.
After the ByteAddressBuffer conversion, Load4 uses the exact byte
address including the +4 offset, shifting the load window by one dword.
The .yw swizzle then picks samples from the wrong pixels, causing
visual artifacts like vertical streaks in Resident Evil 5.
Fix by aligning the load address down to 16 bytes and selecting the
swizzle based on whether the address was offset.
When two threads fault on the same watched page, the second thread may
find the watch already cleared by the first. TriggerCallbacks returned
false in this case, leaving the SIGSEGV unhandled. Return true instead
so the instruction retries — the page is already unprotected.
This is the signal-safe equivalent of the QueryProtect check that
handles the same race on Windows. Fixes a regression from dbd58b.
Generate per-function CIE+FDE records and register them via
__register_frame so the C++ exception unwinder can propagate through
JIT frames. Replace setjmp/longjmp fiber reentry with throw/catch
on Linux to ensure destructors and RAII guards run during fiber
stack switches.
std::ifstream read of /proc/self/maps is not async-signal-safe and runs
on every access violation fault. Skip the race-condition check and go
straight to the callback, which handles cleared watches correctly.
Fixes severe performance issues seen in MFSMW, MCLA, etc.
Replace std::mutex/condition_variable with sem_wait/sem_post for thread
suspension, as WaitSuspended is called from the SIGRTMIN signal handler
where pthread_mutex_lock is not async-signal-safe.
