Rework built-in COM->CLR stubs to build on the UnmanagedCallersOnly model - #126002

Merged

jkoritzinsky merged 26 commits into

dotnet:mainfrom

jkoritzinsky:comtoclrcall-uco

Apr 3, 2026

Commits on Mar 17, 2026

Convert COM->CLR stubs to have an explicit first parameter for the IUnknown* instead of having an implicit object parameter that we need to manually resolve from the IUnknown* (only works on x64 fo…
jkoritzinsky
committed
c185135

Commits on Mar 23, 2026

Move COM->CLR stubs to use UMThunkEntryInfo and directly calling the stdcall entry points (asm changes only for x64 for now)
jkoritzinsky
committed
ebefbc6
Introduce return stubs for the error scenarios instead of manually setting the correct return registers in asm/with asm helpers
jkoritzinsky
committed
3c366de

Commits on Mar 24, 2026

Add concept of "temporary target" to UMEntryThunkData and use it for the COM workers to preserve SetupThreadNoThrow semantics
jkoritzinsky
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23d521d
Delete emitComStubCall now that it's unused
jkoritzinsky
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d73bc07
Qualify destructor
jkoritzinsky
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73d70b0
Remove more dead code
jkoritzinsky
committed
dffe50a
Delete more dead code
jkoritzinsky
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84460b2
PR feedback
jkoritzinsky
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e18b5b6
More PR feedback
jkoritzinsky
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688631e
PR feedback and use macros for better unwind code support
jkoritzinsky
committed
72d937e

Commits on Mar 25, 2026

Fix failures
jkoritzinsky
committed
84e6988

Commits on Mar 26, 2026

Merge branch 'main' into comtoclrcall-uco
jkoritzinsky
authored
7e7e39f
Fix compilation issues and remove more dead code
jkoritzinsky
committed
80ba426

Commits on Mar 27, 2026

Inline a NULL
jkoritzinsky
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1bcdb80

Commits on Mar 31, 2026

Fix build failures
jkoritzinsky
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c50632c
Update src/coreclr/vm/comcallablewrapper.h

jkoritzinsky
and
Copilot
authored
e1bbdd8
Fix copilot feedback that we're going to fix
jkoritzinsky
committed
34f22f2
Use standard representations of NaN instead of bit twiddling
jkoritzinsky
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42ffca7
PR feedback and fix sign for double
jkoritzinsky
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e16e512
Fix setting NaN correctly
jkoritzinsky
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c893073
Add another push as the stack gets popped by the stdcall entrypoint and the secret arg wouldn't be available
jkoritzinsky
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c409790
Fix scoping for x86
jkoritzinsky
committed
67a9d8e

Commits on Apr 1, 2026

Remove unused local
jkoritzinsky
committed
cbf16f8
Bump up to 240 bytes to ensure alignment at 16-bytes for SAVE_ARGUMENT_REGISTERS
jkoritzinsky
committed
c32e4e6

Commits on Apr 2, 2026

Update src/coreclr/vm/comtoclrcall.h

jkoritzinsky
and
jkotas
authored
e5b7d6f