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Sync with upstream FEX - #2

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Sync with upstream FEX#2
github-actions[bot] wants to merge 203 commits into
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upstream-main

Commits on Oct 5, 2026
Commits on Oct 6, 2026
- clang format
  javelina-pkwy
  committed
  e638b8e
- Tests: enable some tests that were disabled, and small fix to guest_test_runner.py
  javelina-pkwy
  committed
  eed344e
Commits on Oct 7, 2026
Commits on Oct 8, 2026
- ARM64EC: Load NtDllRedirectionLUTSize as 32-bit in CheckCall
  tarikbc
  committed
  4dbb046
- ARM64EC: Don't read past the end of NtDllRedirectionLUT in CheckCall
  tarikbc
  committed
  3a2b1c0
Commits on Oct 9, 2026
- Syscall: stat of nullptr shouldn't abort()
  javelina-pkwy
  committed
  13bc7fa
- Also add ENOENT tests
  javelina-pkwy
  committed
  3e2b2aa
- NIT
  javelina-pkwy
  committed
  e94ad12
- Clang format
  javelina-pkwy
  committed
  30398c3
Commits on Oct 12, 2026
- Linux/SignalDelegator: Support SA_RESETHAND
  Sonicadvance1
  committed
  0152660
- FEXLinuxTests: Adds SA_RESETHAND test
  Sonicadvance1
  committed
  f96bf07
- Thunks: Fixes LLVM 23
  Sonicadvance1
  committed
  896a869
- Merge pull request #6021 from tarikbc/arm64ec-lutsize-ldr
  Sonicadvance1
  authored
  94ff2b0
- Merge pull request #6024 from javelina-pkwy/fix/stat-nullptr
  Sonicadvance1
  authored
  e3c1c1e
- Merge pull request #6020 from javelina-pkwy/fix/main-stack-growth
  Sonicadvance1
  authored
  dab12ae
- Tests: Reduce wall clock time spent in "ninja tests"
  javelina-pkwy
  committed
  9f61097
- Merge pull request #6030 from Sonicadvance1/268
  lioncash
  authored
  fb925d6
- DiskCache: Fixes a race condition on the data blob
  Sonicadvance1
  committed
  b49837f
Commits on Oct 13, 2026
Commits on Oct 14, 2026
- Dispatcher: Adds unused synchronous dispatch handler
  Sonicadvance1
  committed
  461b286
- Arm64ec: Wire up non-faulting synchronous faults
  Sonicadvance1
  committed
  07abec3
- FEXCore: Wire up the fault free synchronous fault handling
  Sonicadvance1
  committed
  27cfd41
- InstcountCI: Update
  Sonicadvance1
  committed
  761369f
Commits on Oct 18, 2026
- Merge pull request #6039 from Sonicadvance1/274
  Sonicadvance1
  authored
  741e146
Commits on Oct 19, 2026
- OpcodeDispatcher: Add undefined flags acid test
  Sonicadvance1
  committed
  651b94f
- FEXCore: Wire up support for SERIALIZE
  Sonicadvance1
  committed
  f256d97
- InstcountCI: Update
  Sonicadvance1
  committed
  47de7e3
- HostRunner: Support checking for SERIALIZE
  Sonicadvance1
  committed
  25eb85f
- Merge pull request #6043 from Sonicadvance1/276
  lioncash
  authored
  d7b8e14
Commits on Oct 20, 2026
- Add another function stub for libc++ 24 on Windows
  mstorsjo
  committed
  04f078e
- Merge pull request #6044 from mstorsjo/libcxx-24-strtof
  lioncash
  authored
  a36ca80
- Merge pull request #6042 from Sonicadvance1/275
  lioncash
  authored
  fd8a601
- HostFeatures: clang-format
  Sonicadvance1
  committed
  14b3021
- Merge pull request #6046 from Sonicadvance1/278
  lioncash
  authored
  eeb9902
- CodeEmitter: Adds support for BF16 conversion instructions.
  Sonicadvance1
  committed
  c77f476
Commits on Oct 21, 2026
- IR: Support movi 64-bit imm expansion
  Sonicadvance1
  committed
  581e8d4
- IR: Add support for BF16 conversion operations
  Sonicadvance1
  committed
  8f927c9
- X86Tables: Describe AVX_NE_CONVERT instructions
  Sonicadvance1
  committed
  c4f0ae7
- HostFeatures: Detect BF16 support
  Sonicadvance1
  committed
  75d8089
- AVX128: Implement AVX_NE_CONVERT
  Sonicadvance1
  committed
  36d3bb6
- AVX256: Implement AVX_NE_CONVERT
  Sonicadvance1
  committed
  fd4c097
- FEXCore/CPUID: Expose AVX_NE_CONVERT
  Sonicadvance1
  committed
  a98c5a3
- TestHarnessRunner: Add AVX_NE_CONVERT feature
  Sonicadvance1
  committed
  ff65694
- HostFeatures: Support controlling BF16
  Sonicadvance1
  committed
  e7554e9
- InstcountCI: Control BF16 if required
  Sonicadvance1
  committed
  8ad4db7
- unittests/ASM: Adds new AVX_NE_CONVERT tests
  Sonicadvance1
  committed
  f5006ab
- InstcountCI: Update and add AVX_NE_CONVERT instructions
  Sonicadvance1
  committed
  407e78e
- Merge pull request #6048 from Sonicadvance1/280
  lioncash
  authored
  3b7daa5
- CPUID: Add new Apple Silicon names
  Sonicadvance1
  committed
  2ac75c2
- code-format-helper: More dependabot things
  Sonicadvance1
  committed
  21b098c
- Merge pull request #6051 from Sonicadvance1/282
  lioncash
  authored
  80e28a1
- Merge pull request #6050 from Sonicadvance1/281
  lioncash
  authored
  805f44b
- code-format-helper: More dependabot things
  Sonicadvance1
  committed
  ca389e0
- JIT: Inline 128 bit unsigned divide
  javelina-pkwy
  committed
  9f7913e
- Tests: add DIV tests
  javelina-pkwy
  committed
  d21ae97
- DiskCache: Bump version
  javelina-pkwy
  committed
  646c442
- JIT: Slightly shorter path for EmitDivllu
  javelina-pkwy
  committed
  01b344b
- NIT: Clarify comment
  javelina-pkwy
  committed
  eedb8be
- Oops: didn't update InstructionCountCI correctly
  javelina-pkwy
  committed
  9cb94e1
- OpcodeDispatcher: Handle 0x82 alias for 0x80 in x86 mode
  javelina-pkwy
  committed
  7b909d3
- Tests: check the x64 sigill behavior for this alias
  javelina-pkwy
  committed
  5d6699e
- clang-format
  javelina-pkwy
  committed
  0a44817
- Tests: add locked form
  javelina-pkwy
  committed
  7974346
- Merge pull request #6047 from javelina-pkwy/perf/knuth-div
  Sonicadvance1
  authored
  24987be
- Merge pull request #6053 from javelina-pkwy/fix/group1-0x82-alu
  Sonicadvance1
  authored
  89713ba
- HostFeatures: Make a stronger distinction between CPU features and Process features
  Sonicadvance1
  committed
  cbcb003
- InstcountCI: Update
  Sonicadvance1
  committed
  888bd7f
- Merge pull request #6052 from Sonicadvance1/283
  Sonicadvance1
  authored
  4e2b509
Commits on Oct 22, 2026
- OpcodeDispatcher: Implement SLDT
  Sonicadvance1
  committed
  465395d
- unittests/ASM: Adds SLDT unittests
  Sonicadvance1
  committed
  d146242
- InstcountCI: Update
  Sonicadvance1
  committed
  6ce1127
- Merge pull request #6055 from Sonicadvance1/284
  lioncash
  authored
  e3e8304
- OpcodeDispatcher: Fixes swapgs on 32-bit
  Sonicadvance1
  committed
  8e60608
- Another missed clang-format
  Sonicadvance1
  committed
  a3a8f1d
Commits on Oct 23, 2026
- Merge pull request #6056 from Sonicadvance1/285
  lioncash
  authored
  5c81797
- Merge pull request #6057 from Sonicadvance1/286
  lioncash
  authored
  3da673e
- X86Features: Fixes bit offset for avx_ne_convert
  Sonicadvance1
  committed
  212c934
- X86Features: Detect more features
  Sonicadvance1
  committed
  ead1317
- TestHarnessHelper: Adds support for the new CPU features
  Sonicadvance1
  committed
  660e046
- InstcountCI: Add sha512 instructions.
  Sonicadvance1
  committed
  39343ab
- InstcountCI: Add AVX_IFMA
  Sonicadvance1
  committed
  a3f4051
- InstcountCI: Add AVX_VNNI_INT8
  Sonicadvance1
  committed
  7bfd018
- InstcountCI: Add AVX_VNNI_INT16
  Sonicadvance1
  committed
  8f3566e
- EmulatedFiles/cpuinfo: Expose sha512 flag in cpuinfo
  Sonicadvance1
  committed
  6431548
- Dispatcher: Optimize syscall return with L1 lookup
  Sonicadvance1
  committed
  502a190
- Merge pull request #6059 from Sonicadvance1/287
  lioncash
  authored
  2e537bd
- OpcodeDispatcher: Implement x87 FIP for save/restore operations
  Sonicadvance1
  committed
  648f883
- unittests/ASM: Adds FIP tests
  Sonicadvance1
  committed
  ff2c466
- InstcountCI: Update
  Sonicadvance1
  committed
  a75921c
Commits on Oct 24, 2026
- Merge pull request #6061 from Sonicadvance1/289
  lioncash
  authored
  710195a
- Merge pull request #6060 from Sonicadvance1/288
  lioncash
  authored
  9eb5d92
Commits on Oct 25, 2026
- unittests/ASM: Include local directory of asm file
  Sonicadvance1
  committed
  728d577
- unittests/ASM: Adds an x87 FIP unittest
  Sonicadvance1
  committed
  7efd1d1
- OpcodeDispatcher/x87: Implement support for FIP
  Sonicadvance1
  committed
  983aa47
- Merge pull request #6062 from Sonicadvance1/290
  lioncash
  authored
  1c4f04b
Commits on Oct 27, 2026
Commits on Oct 28, 2026
- unittests/ASM: Fixes AVX-NE-convert tests
  Sonicadvance1
  committed
  1406207
- OpcodeDispatcher: Fixes AVX-NE-Convert
  Sonicadvance1
  committed
  13c30c2
- InstcountCI: Update
  Sonicadvance1
  committed
  c62a674
- unittests/ASM: New RNG tests for all the new instructions
  Sonicadvance1
  committed
  9ac6c37
- HostRunner: Support querying CPU features through FEX CPUID emulation
  Sonicadvance1
  committed
  eebebc0
- Merge pull request #6069 from Sonicadvance1/292
  lioncash
  authored
  fb48e2d
Commits on Oct 29, 2026
- IR: keep guest loads whose value is unused
  utkarshdalal
  committed
  4e1ad46
- InstcountCI: Update
  utkarshdalal
  committed
  7cc50a3
- Merge pull request #6074 from utkarshdalal/ir-keep-unused-guest-loads
  Sonicadvance1
  authored
  46acbde
- Merge pull request #6068 from Sonicadvance1/291
  Sonicadvance1
  authored
  d321f49
- FEXCore: Support partial instruction fault decoding
  Sonicadvance1
  committed
  b65c96b
- Frontends: Pass the partial fault to the guest.
  Sonicadvance1
  committed
  511f583
- unittests/FEXLinuxTests: Adds another unittest for partial faulting
  Sonicadvance1
  committed
  3e3e538
- InstcountCI: Update
  Sonicadvance1
  committed
  0e08b6a
Commits on Nov 1, 2026
- unittests/ASM: Fixes results in new benchmarks
  Sonicadvance1
  committed
  2276dfc
Commits on Nov 2, 2026
- Merge pull request #6080 from Sonicadvance1/293
  lioncash
  authored
  02e24ca
- Merge pull request #6075 from Sonicadvance1/292
  lioncash
  authored
  1e463b0
- CMake: Don't install ThunksDB for mingw
  Sonicadvance1
  committed
  a992f43
- CMake: too-long-line fixes, options reorg, and some cleanups
  crueter
  committed
  3021b41
- Dependabot: More
  Sonicadvance1
  committed
  1a450d0
- Wire up support for using TPIDRRO as CPU core index on Linux
  Sonicadvance1
  committed
  2d4f40b
- Merge pull request #6086 from Sonicadvance1/296
  lioncash
  authored
  3f3f7bc
- JIT: Rename `CompileCode` to `EmitJITCode`
  Sonicadvance1
  committed
  4609908
- Merge pull request #6087 from Sonicadvance1/297
  lioncash
  authored
  eae8d21
- Merge pull request #6085 from Sonicadvance1/295
  lioncash
  authored
  2b4145a
- Merge pull request #6079 from crueter/too-long-line
  lioncash
  authored
  1e4dab5
- InstCountCI: Add SHA256 peephole tests
  javelina-pkwy
  committed
  7f7882d
- OpcodeDispatcher: Add SHA256RNDS2 peephole
  javelina-pkwy
  committed
  e7a1904
- NIT: Style
  javelina-pkwy
  committed
  e873aad
- CMake: Adds mingw toolchain files for cross-compiling
  Sonicadvance1
  committed
  068571e
- unittests: Adds new Mingw tests that are only build-tested
  Sonicadvance1
  committed
  68af18a
- InstCountCI: Bump DiskCache version
  javelina-pkwy
  committed
  9691f76
- github: Have mingw build build the FEXMingwTests
  Sonicadvance1
  committed
  8591a03
- Merge pull request #6088 from Sonicadvance1/298
  lioncash
  authored
  abc9334
- Merge pull request #6084 from Sonicadvance1/294
  lioncash
  authored
  7816573
- unittests/FEXMingwTests: Adds breakpoint unittest
  Sonicadvance1
  committed
  5c45366
Commits on Nov 3, 2026
- Merge pull request #6089 from Sonicadvance1/299
  Sonicadvance1
  authored
  a6ba3e2
- FEXCore/CoreState: Add debug registers to core state.
  Sonicadvance1
  committed
  c5352bf
- FEXCore/OpcodeDispatcher: Implement support for breakpoints on instructions
  Sonicadvance1
  committed
  c218167
- Wow64: Implement support for breakpoints
  Sonicadvance1
  committed
  18cc74c
- Arm64EC: Try to control debug registers
  Sonicadvance1
  committed
  0c59ad2
- InstcountCI: Disable tpidrro in rdpid/rdtsc files.
  Sonicadvance1
  committed
  b7b039c
- InstcountCI: Update
  Sonicadvance1
  committed
  55bdb16
- Config: Fixes typo in man page. NFC
  Sonicadvance1
  committed
  f9b2f13
- Merge pull request #6077 from javelina-pkwy/perf/sha256-peephole
  Sonicadvance1
  authored
  524a37c
- Merge pull request #6091 from Sonicadvance1/301
  lioncash
  authored
  24da3ae
- Merge pull request #6090 from Sonicadvance1/300
  lioncash
  authored
  b1f27cf
- Merge pull request #6045 from Sonicadvance1/277
  lioncash
  authored
  2b10820
- fix(CMakeLists): Fix build flags when LIBCXX is enabled
  Claudemirovsky
  committed
  db09e95
- Merge pull request #6092 from Claudemirovsky/fix/build/libcxx-moment
  Sonicadvance1
  authored
  4a4669a
- Implement _wsetlocale and _wcsdup for libc++ 24
  mstorsjo
  committed
  c7ad33c
- Merge pull request #6093 from mstorsjo/wsetlocale-wcsdup
  lioncash
  authored
  fb68b0e
- Windows/CPUFeatures: Fixes disabled cache instruct operations on wine
  Sonicadvance1
  committed
  7d0cf9b
- arm64ec: Fixes copy-paste failure
  Sonicadvance1
  committed
  c69f2bf
- CMake: Add an llvm-mingw clang version check to preserve_all
  Sonicadvance1
  committed
  c76fccf
- HostFeatures: Tag the bit positions of each flag
  Sonicadvance1
  committed
  61086cc
- Merge pull request #6094 from Sonicadvance1/302
  lioncash
  authored
  effbda6
- Externals: Update vixl
  lioncash
  committed
  6e4d95c
- Merge pull request #6095 from lioncash/vixlup
  Sonicadvance1
  authored
  fc770b3
Commits on Nov 4, 2026
- Scripts: Fixes guest mode check in guest test runner
  Sonicadvance1
  committed
  8f0f22c
- FEXMingwTests: Adds the ability to run the mingw tests
  Sonicadvance1
  committed
  25d9135
- Merge pull request #6096 from Sonicadvance1/303
  lioncash
  authored
  75df0f8
- CMake: Disable async unwind tables on mingw+preserve_all
  Sonicadvance1
  committed
  ef006bd
- Tools: Fixes a couple throws that leaked
  Sonicadvance1
  committed
  3f6d7a7
- Merge pull request #6100 from Sonicadvance1/304
  lioncash
  authored
  d6ec067
- Merge pull request #6101 from Sonicadvance1/305
  lioncash
  authored
  a81762c
- OpcodeDispatcher: Make sure xsetbv works correctly
  Sonicadvance1
  committed
  61523a6
- FEXServerManager: Stop leaving stale FEXServer sockets around
  Sonicadvance1
  committed
  7a6d04e
- InstcountCI: Update
  Sonicadvance1
  committed
  da92583
- Merge pull request #6102 from Sonicadvance1/306
  lioncash
  authored
  a8c9016
- Merge pull request #6103 from Sonicadvance1/307
  lioncash
  authored
  eff9f45
Commits on Nov 5, 2026
- Docs: Update for release FEX-2611
  Sonicadvance1
  committed
  8f92e80
- DiskCache: Moves SVE/AVX from HostFeatureHash to ProcessHash
  Sonicadvance1
  committed
  36aec0d
- InstcountCI: Update
  Sonicadvance1
  committed
  6a3d85a
- Arm64Emitter: Add a way to query SRA x86 registers to their arm64 mapping
  Sonicadvance1
  committed
  ef586f0
- FEX: Implement support for CPUID faulting
  Sonicadvance1
  committed
  0529316
- FEXLinuxTests: Adds a unittest for CPUID fault testing
  Sonicadvance1
  committed
  a2b15c8
- InstcountCI: Update
  Sonicadvance1
  committed
  a3f5700
- InstcountCI: Remove CPUID with constant. This no longer optimizes
  Sonicadvance1
  committed
  02e932d
- Merge pull request #6105 from Sonicadvance1/309
  lioncash
  authored
  e67bbd3
Commits on Nov 6, 2026
- Merge pull request #6104 from Sonicadvance1/308
  lioncash
  authored
  c985199
- CPUID: Fixes crash in CPUID
  Sonicadvance1
  committed
  b9fc587
- Windows: Fixes forced assert
  Sonicadvance1
  committed
  cf2f831
- ImageTracker: Actually wire up config option for Volatile Metadata
  Sonicadvance1
  committed
  feee41a
- Merge pull request #6106 from Sonicadvance1/310
  lioncash
  authored
  ae495b9
Commits on Nov 7, 2026
- CI: Update Actions deps
  crueter
  committed
  ec3d5ac
- Merge pull request #6109 from crueter/ci-checkout-update
  lioncash
  authored
  388fd9c
Commits on Nov 8, 2026
- FEXRootFSFetcher: Fixes Config setting
  Sonicadvance1
  committed
  9cf556b
- Merge pull request #6111 from Sonicadvance1/311
  lioncash
  authored
  16c1000

Commits

Commits on Oct 5, 2026

Commits on Oct 6, 2026

Commits on Oct 7, 2026

Commits on Oct 8, 2026

Commits on Oct 9, 2026

Commits on Oct 12, 2026

Commits on Oct 13, 2026

Commits on Oct 14, 2026

Commits on Oct 18, 2026

Commits on Oct 19, 2026

Commits on Oct 20, 2026

Commits on Oct 21, 2026

Commits on Oct 22, 2026

Commits on Oct 23, 2026

Commits on Oct 24, 2026

Commits on Oct 25, 2026

Commits on Oct 27, 2026

Commits on Oct 28, 2026

Commits on Oct 29, 2026