Struct PatchableBlock 

pub struct PatchableBlock { /* private fields */ }

Self-describing handle for a rewritable code region (immediate or custom block).

Implementations

impl PatchableBlock

pub const unsafe fn new( offset: CodeOffset, size: CodeOffset, arch: Arch, ) -> Self

Construct a block handle manually.

Safety

offset..offset+size in any image you later patch must be a reserved patch region for arch (instruction alignment and nop-fill rules apply).

pub const fn offset(self) -> CodeOffset

pub const fn size(self) -> CodeOffset

pub const fn arch(self) -> Arch

pub unsafe fn rewrite( self, bytes: &mut [u8], new_bytes: &[u8], ) -> Result<(), AsmError>

Overwrite this block; shorter payloads are padded with architecture nops.

Safety

bytes must be the code image this block was recorded against. The caller synchronizes concurrent execution of the patched region.

pub unsafe fn repatch_u32( self, bytes: &mut [u8], value: u32, ) -> Result<(), AsmError>

Write a little-endian u32 into a 4-byte block (x86 patchable_mov on Gp32, etc.).

Safety

See rewrite.

pub unsafe fn repatch_u64( self, bytes: &mut [u8], value: u64, ) -> Result<(), AsmError>

Write a little-endian u64 into an 8-byte block (x86 patchable_mov on Gp64, etc.).

Safety

See rewrite.

Trait Implementations

impl Clone for PatchableBlock

fn clone(&self) -> PatchableBlock

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PatchableBlock

impl Debug for PatchableBlock

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

Formats the value using the given formatter.

impl Eq for PatchableBlock

impl Hash for PatchableBlock

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for PatchableBlock

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PatchableBlock