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Experiment with supporting Windows Arm64 natively

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So far I haven't found any way to run native Arm64 code on Windows Arm64
without using MSVC. When I build a PE binary from scratch that should be
a valid Windows Arm64 program, the OS refuses to run it. Possibly due to
requiring additional content like XML manifests or relocation or control
flow integrity data that isn't normally required on x64. I've also tried
using VirtualAlloc2() to JIT an Arm64 native function, but VirtualAlloc2
always fails with invalid parameter. I tried using MSVC to create an ARM
DLL that my x64 emulated program can link at runtime, to pass a function
pointer with ARM code, but LoadLibrary() rejects ARM DLLs as invalid exe

The only option left, is likely to write a new program like ape/ape-m1.c
which can be compiled by MSVC to load and run an AARCH64 ELF executable.
The emulated x64 binary would detect emulation using IsWow64Process2 and
then drop the loader executable in a temporary folder, and re-launch the
original executable, using the Arm64 segments of the cosmocc fat binary.
This commit is contained in:
Justine Tunney 2024-08-16 06:43:59 -07:00
parent 1671283f1a
commit 5bd22aef12
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GPG key ID: BE714B4575D6E328
12 changed files with 88 additions and 16 deletions
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5
libc/nt/master.sh
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@ -113,6 +113,7 @@ imp 'GetCurrentProcessId' GetCurrentProcessId kernel32 0
imp 'GetCurrentProcessorNumberEx' GetCurrentProcessorNumberEx kernel32 1
imp 'GetCurrentThread' GetCurrentThread kernel32 0
imp 'GetCurrentThreadId' GetCurrentThreadId kernel32 0
imp 'GetDynamicTimeZoneInformation' GetDynamicTimeZoneInformation kernel32 1
imp 'GetEnvironmentStrings' GetEnvironmentStringsW kernel32 1
imp 'GetEnvironmentVariable' GetEnvironmentVariableW kernel32 3
imp 'GetExitCodeThread' GetExitCodeThread kernel32 2
@ -168,8 +169,6 @@ imp 'GetSystemTimePreciseAsFileTime' GetSystemTimePreciseAsFileTime kernel3
imp 'GetSystemTimes' GetSystemTimes kernel32 3
imp 'GetTempPath' GetTempPathW kernel32 2
imp 'GetTempPathA' GetTempPathA kernel32 2
imp 'GetDynamicTimeZoneInformation' GetDynamicTimeZoneInformation kernel32 1
imp 'GetTimeZoneInformation' GetTimeZoneInformation kernel32 1
imp 'GetThreadContext' GetThreadContext kernel32 2
imp 'GetThreadDescription' GetThreadDescription kernel32 2
imp 'GetThreadIOPendingFlag' GetThreadIOPendingFlag kernel32 2
@ -178,6 +177,7 @@ imp 'GetThreadPriority' GetThreadPriority kernel32 1
imp 'GetThreadPriorityBoost' GetThreadPriorityBoost kernel32 2
imp 'GetThreadTimes' GetThreadTimes kernel32 5
imp 'GetTickCount64' GetTickCount64 kernel32 0
imp 'GetTimeZoneInformation' GetTimeZoneInformation kernel32 1
imp 'GetVersionEx' GetVersionExW kernel32 1
imp 'GetVolumeInformationByHandle' GetVolumeInformationByHandleW kernel32 8
imp 'GetVolumePathName' GetVolumePathNameW kernel32 3
@ -197,6 +197,7 @@ imp 'InitializeCriticalSection' InitializeCriticalSection kernel32 1
imp 'InitializeCriticalSectionAndSpinCount' InitializeCriticalSectionAndSpinCount kernel32 2
imp 'InitializeProcThreadAttributeList' InitializeProcThreadAttributeList kernel32 4
imp 'InitializeSRWLock' InitializeSRWLock kernel32 1
imp 'IsWow64Process2' IsWow64Process2 kernel32 3
imp 'LeaveCriticalSection' LeaveCriticalSection kernel32 1
imp 'LoadLibrary' LoadLibraryW kernel32 1
imp 'LoadLibraryA' LoadLibraryA kernel32 1