Struct AddressMapSection

pub struct AddressMapSection { /* private fields */ }

Builder for the address map section of a wasmtime compilation image.

This builder is used to conveniently built the ELF_WASMTIME_ADDRMAP section by compilers, and provides utilities to directly insert the results into an Object.

Implementations

impl AddressMapSection

pub fn push(&mut self, func: Range<u64>, instrs: &[InstructionAddressMap])

Pushes a new set of instruction mapping information for a function added in the executable.

The func argument here is the range of the function, relative to the start of the text section in the executable. The instrs provided are the descriptors for instructions in the function and their various mappings back to original source positions.

This is required to be called for func values that are strictly increasing in addresses (e.g. as the object is built). Additionally the instrs map must be sorted based on code offset in the native text section.

pub fn append_to(self, obj: &mut Object<'_>)

Finishes encoding this section into the Object provided.

Trait Implementations

impl Default for AddressMapSection

fn default() -> AddressMapSection

Returns the “default value” for a type.