Usually imm8 seem more likely to be a function of the code around them, but
this one seems used by Mono for varying data over execution of same code.
Maybe an ID of some kind.
By going through relocations before computing/hashing extents, we can simply
undo datamasks that haven't been claimed by the backend instead of failing
the whole Store. They fall back to being part of the normal hashed extents.
I forgot on Linux by default we didn't have the syscall instructions
count as block end. Change this so that it counts as block end now.
This has the additional benefit that now the frontend needs to modify
the RIP manually as well which is fine as it's what arm64ec and wow64
does.
Also add back the UnimplementedOp in RDPID that accidentally got caught
up. Also increment DiskCache version as both changes will change
codegen.
Fixes#5942
CHPE_V2_CPU_AREA_INFO is the mechanism used on ARM64EC to coordinate
thread state, suspension and exception handling with the kernel.
It's typically set up by ntdll for ARM64EC processes, but Wine uses
the TEB pointer without restricting where it's coming from. Set
ChpeV2CpuAreaInfo in FEX WOW64 thread initialization.
Fixes 32-bit debug events and a number of CPU context handling tests.
Reduces the number of wineserver round-trips required for suspend and
avoids the need for remote thread creation for inter-process suspends.
We would check the FileID of mapped sections, but BSS is an anonymous mapping.
Grab the ELF image extents when we parse the file, and add an additional check
to the relocation filter to bail out additional relocs if we know that size.
The LookupKey based on data available at Lookup time gives a list of possible
candidate entries, which may have different guest code sizes/footprints.
If only one candidate, it's stored in-line in the map like before - if we grow
past that, an additional (multi)map is allocated, sorted by footprint.
The footprint sorting lets us reduce the amount of hashes performed at Lookup
to the strict minimum.
Anon entries keys are based on a limited size decoded prefix, so this is an
important part of geting the best hit rate possible out of all the other work
with anon keys, as there's often multiple candidates with the same prefix.
Cap the max amount of entries per bucket to limit growth.
This allows WTF to catch the allocations just like on Linux. Punch our
unixlib path all the way through to rpmalloc so it gets named and
tracked properly.
Otherwise GuestSize ends up different across compiles of the same valid code
extents, including the copy of it baked in JITCodeTail of the host code itself.
Return the same as the NonExecutableRange for now. I have a unittest
that is mostly correct with this change, just need to fixup some of the
supplementary data.
For now push this change to get a bad assert removed that can happen
during code discovery. I'll fix up the remaining details afterwards.
Just be very explicit about this rather than questioning why MMX moves
can't be a nop in the regular vector move code.
Doesn't change codegen so binarycacheversion doesn't need to change.
LC