Enum RelocModel

pub enum RelocModel {
    Default,
    Static,
    Pic,
    DynamicNoPic,
    Ropi,
    Rwpi,
    RopiRwpi,
}

The relocation model types supported by LLVM

Variants

Default

Generated code will assume the default for a particular target architecture.

Static

Generated code will exist at static offsets.

Pic

Generated code will be position-independent.

DynamicNoPic

Generated code will not be position-independent and may be used in static or dynamic executables but not necessarily a shared library.

Ropi

Generated code will be compiled in read-only position independent mode. In this mode, all read-only data and functions are at a link-time constant offset from the program counter. ROPI is not supported by all target architectures and calling conventions. It is a particular feature of ARM targets, though. ROPI may be useful to avoid committing to compile-time constant locations for code in memory.

Rwpi

Generated code will be compiled in read-write position independent mode.

In this mode, all writable data is at a link-time constant offset from the static base register.

RWPI is not supported by all target architectures and calling conventions. It is a particular feature of ARM targets, though.

RWPI may be useful to avoid committing to compile-time constant locations for code in memory

RopiRwpi

Combines the ropi and rwpi modes. Generated code will be compiled in both read-only and read-write position independent modes. All read-only data appears at a link-time constant offset from the program counter, and all writable data appears at a link-time constant offset from the static base register.

Trait Implementations

impl Clone for RelocModel

fn clone(&self) -> RelocModel

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RelocModel

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

Formats the value using the given formatter.

impl Default for RelocModel

fn default() -> RelocModel

Returns the “default value” for a type.