Module obj

Utilities for working with object files that operate as Wasmtime’s serialization and intermediate format for compiled modules.

Structs

ObjectCrateErrorWrapper

Workaround to implement core::error::Error until gimli-rs/object#747 is settled.

Enums

LibCall

Constants

EF_WASMTIME_COMPONENT

Flag for the e_flags field in the ELF header indicating a compiled component.

EF_WASMTIME_MODULE

Flag for the e_flags field in the ELF header indicating a compiled module.

ELFOSABI_WASMTIME

Filler for the os_abi field of the ELF header.

ELF_NAME_DATA

This is the name of the section in the final ELF image which contains a concatenated list of all function names.

ELF_WASMTIME_ADDRMAP

A custom Wasmtime-specific section of our compilation image which stores mapping data from offsets in the image to offset in the original wasm binary.

ELF_WASMTIME_DWARF

This is the name of the section in the final ELF image that contains the concatenation of all the native DWARF information found in the original wasm files.

ELF_WASMTIME_INFO

This is the name of the section in the final ELF image which contains a bincode-encoded CompiledModuleInfo.

ELF_WASMTIME_TRAPS

A custom binary-encoded section of wasmtime compilation artifacts which encodes the ability to map an offset in the text section to the trap code that it corresponds to.

ELF_WASM_BTI

A custom section which consists of just 1 byte which is either 0 or 1 as to whether BTI is enabled.

ELF_WASM_DATA

This is the name of the section in the final ELF image which contains concatenated data segments from the original wasm module.

ELF_WASM_ENGINE

A bincode-encoded section containing engine-specific metadata used to double-check that an artifact can be loaded into the current host.

SH_WASMTIME_NOT_EXECUTED

Flag for the sh_flags field in the ELF text section that indicates that the text section does not itself need to be executable. This is used for the Pulley target, for example, to indicate that it does not need to be made natively executable as it does not contain actual native code.