Module eh

Helpers for generating DWARF LSDA data for Cranelift-compiled functions.

The structures and encoding implemented here mirror what LLVM produces for Wasm exception handling so that Wasmer’s libunwind personalities can parse the tables without any runtime changes.

Structs

ActionTable 🔒

CallSiteDesc 🔒

FunctionLsdaData

Fully encoded LSDA bytes for a single function, together with pending tag relocations that will be resolved once the global tag section is built.

TagRelocation

Relocation information for an LSDA entry that references a tag constant.

TypeTable 🔒

Enums

ActionKind 🔒

TypeEntry 🔒

TypeKey 🔒

Functions

build_function_lsda

Build the LSDA for a single function given the finalized Cranelift call-site metadata.

build_lsda_section

Build the LSDA custom section and record the offset for each function.

build_tag_section

Build the global tag section and a tag->offset map.

encode_action_table 🔒

encode_call_site_table 🔒

uleb128_len 🔒

write_encoded_offset 🔒