Enum crate_metadata::SectionType

pub enum SectionType {
    Text,
    Rodata,
    Data,
    Bss,
    TlsData,
    TlsBss,
    Cls,
    GccExceptTable,
    EhFrame,
}

The possible types of sections that can be loaded from a crate object file.

Variants

Text

A text section contains executable code, i.e., functions.

Rodata

An rodata section contains read-only data, i.e., constants.

Data

A data section contains data that is both readable and writable, i.e., static variables.

Bss

A bss section is just like a data section, but is automatically initialized to all zeroes at load time.

TlsData

A .tdata section is a read-only section that holds the initial data “image” for a thread-local storage (TLS) area.

TlsBss

A .tbss section is a read-only section that holds all-zero data for a thread-local storage (TLS) area. This is is effectively an empty placeholder: the all-zero data section doesn’t actually exist in memory.

Cls

A .cls section is a read-only section that holds the initial data “image” for a CPU-local (CLS) area.

GccExceptTable

A .gcc_except_table section contains landing pads for exception handling, comprising the LSDA (Language Specific Data Area), which is effectively used to determine when we should stop the stack unwinding process (e.g., “catching” an exception).

Blog post from author of gold linker: https://www.airs.com/blog/archives/464

Mailing list discussion here: https://gcc.gnu.org/ml/gcc-help/2010-09/msg00116.html

Here is a sample repository parsing this section: https://github.com/nest-leonlee/gcc_except_table

EhFrame

The .eh_frame section contains information about stack unwinding and destructor functions that should be called when traversing up the stack for cleanup.

Blog post from author of gold linker: https://www.airs.com/blog/archives/460 Some documentation here: https://gcc.gnu.org/wiki/Dwarf2EHNewbiesHowto

Implementations

impl SectionType

pub const fn name(&self) -> &'static str

Returns the const &str name of this SectionType.

pub fn is_data_or_bss(&self) -> bool

Returns true if Data or Bss, otherwise false.

pub fn is_tls(&self) -> bool

Returns true if TlsData or TlsBss, otherwise false.

Trait Implementations

impl Clone for SectionType

fn clone(&self) -> SectionType

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SectionType

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SectionType

fn deserialize<__D>( __deserializer: __D ) -> Result<SectionType, <__D as Deserializer<'de>>::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq<SectionType> for SectionType

fn eq(&self, other: &SectionType) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for SectionType

fn serialize<__S>( &self, __serializer: __S ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for SectionType

impl StructuralPartialEq for SectionType