[#llvm-Win64EH]
= xref:llvm.adoc[llvm]::Win64EH
:relfileprefix: ../
:mrdocs:

Helpers for encoding Windows x64, ARM, and ARM64 unwind information.

== Types

[cols="1,4"]
|===
| Name| Description
| xref:llvm/Win64EH/ARM64UnwindEmitter.adoc[`ARM64UnwindEmitter`] 
| Emits Windows ARM64 unwind info sections (.pdata and .xdata).
| xref:llvm/Win64EH/ARMUnwindEmitter.adoc[`ARMUnwindEmitter`] 
| Emits Windows ARM unwind info sections (.pdata and .xdata).
| xref:llvm/Win64EH/DecodedEpilogV3.adoc[`DecodedEpilogV3`] 
| Decoded V3 epilog descriptor.
| xref:llvm/Win64EH/DecodedUnwindInfoV3.adoc[`DecodedUnwindInfoV3`] 
| Decoded V3 UNWIND_INFO.
| xref:llvm/Win64EH/DecodedWOD.adoc[`DecodedWOD`] 
| Decoded V3 Winding Operation Descriptor.
| xref:llvm/Win64EH/Instruction.adoc[`Instruction`] 
| Factory helpers that build WinEH::Instruction opcodes for Win64 unwind.
| xref:llvm/Win64EH/RuntimeFunction.adoc[`RuntimeFunction`] 
| RuntimeFunction ‐ An entry in the table of functions with unwind info.
| xref:llvm/Win64EH/UnwindCode.adoc[`UnwindCode`] 
| UnwindCode ‐ This union describes a single operation in a function prolog, or part thereof.
| xref:llvm/Win64EH/UnwindEmitter.adoc[`UnwindEmitter`] 
| Emits Windows x64 unwind info sections (.pdata and .xdata).
| xref:llvm/Win64EH/UnwindInfo.adoc[`UnwindInfo`] 
| UnwindInfo ‐ An entry in the exception table.
|===


== Enums

[cols="1,4"]
|===
| Name| Description
| xref:llvm/Win64EH/_04enum.adoc[`Unnamed enum`] 
| Flags stored in the VersionAndFlags field of UnwindInfo.
| xref:llvm/Win64EH/EpilogInfoFlagsV3.adoc[`EpilogInfoFlagsV3`] 
| V3 EPILOG_INFO flags.
| xref:llvm/Win64EH/UnwindOpcodes.adoc[`UnwindOpcodes`] 
| UnwindOpcodes ‐ Enumeration whose values specify a single operation in the prolog of a function.
| xref:llvm/Win64EH/WODOpcode.adoc[`WODOpcode`] 
| V3 Winding Operation Descriptor opcodes.
|===


== Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/Win64EH/EncodeWOD.adoc[`EncodeWOD`] 
| Encode a single WinEH::Instruction as V3 WOD bytes.
| xref:llvm/Win64EH/decodeUnwindInfoV3.adoc[`decodeUnwindInfoV3`] 
| Parse a V3 UNWIND_INFO from raw bytes. Returns an error on malformed data.
| xref:llvm/Win64EH/decodeWOD.adoc[`decodeWOD`] 
| Decode one WOD from the pool at the given byte offset. Returns an error on malformed data.
| xref:llvm/Win64EH/getRegisterNameV3.adoc[`getRegisterNameV3`] 
| Return the register name for a 5‐bit AMD64 integer register number. Covers 0‐15 (RAX‐R15) and 16‐31 (R16‐R31 for APX).
|===



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