Struct AsmOptions 

pub struct AsmOptions {
    pub pure: bool,
    pub nomem: bool,
    pub readonly: bool,
    pub preserves_flags: bool,
    pub noreturn: bool,
    pub nostack: bool,
    pub att_syntax: bool,
    pub may_unwind: bool,
}

The flags set in options(...). These flags constrain the assembly’s effects; they do not describe instructions in the template itself.

Fields

pure: bool

The assembly code has no side effects, must eventually return, and its outputs depend only on its direct inputs or values read from memory.

nomem: bool

The assembly code does not read from or write to any memory accessible outside of the assembly code.

readonly: bool

The assembly code does not write to any memory accessible outside of the assembly code.

preserves_flags: bool

The assembly code does not modify the flags register.

noreturn: bool

The assembly code does not fall through; it may still jump to label blocks.

nostack: bool

The assembly code does not push data to the stack, or write to the stack red-zone.

att_syntax: bool

Only valid on x86; causes the assembler to use the .att_syntax prefix mode of the GNU assembler.

may_unwind: bool

Allows unwinding out of an asm! block (unstable, see https://github.com/rust-lang/rust/issues/93334). naked_asm! may unwind regardless of this option.

Trait Implementations

impl AstVisitable for AsmOptions

where AsmOptions: PartialEq,

fn drive<V: VisitAst>(&self, v: &mut V) -> ControlFlow<V::Break>

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

fn drive_mut<V: VisitAstMut>(&mut self, v: &mut V) -> ControlFlow<V::Break>

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

fn drive_two<V: ZipAst>(&self, other: &Self, v: &mut V) -> ControlFlow<V::Break>

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

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

The name of the type, used for debug logging.

fn dyn_visit<T: AstVisitable>(&self, f: impl FnMut(&T))

where Self: Sized,

Visit all occurrences of that type inside self, in pre-order traversal.

fn dyn_visit_mut<T: AstVisitable>(&mut self, f: impl FnMut(&mut T))

where Self: Sized,

Visit all occurrences of that type inside self, in pre-order traversal.

impl BodyVisitable for AsmOptions

fn drive_body<V: VisitBody>(&self, v: &mut V) -> ControlFlow<V::Break>

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

fn drive_body_mut<V: VisitBodyMut>( &mut self, v: &mut V, ) -> ControlFlow<V::Break>

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

fn dyn_visit_in_body<T: BodyVisitable>(&self, f: impl FnMut(&T))

where Self: Sized,

Visit all occurrences of that type inside self, in pre-order traversal.

fn dyn_visit_in_body_mut<T: BodyVisitable>(&mut self, f: impl FnMut(&mut T))

where Self: Sized,

Visit all occurrences of that type inside self, in pre-order traversal.

impl Clone for AsmOptions

fn clone(&self) -> AsmOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for AsmOptions

impl Debug for AsmOptions

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

Formats the value using the given formatter.

impl<'de, __State: ?Sized> DeserializeState<'de, __State> for AsmOptions

where bool: DeserializeState<'de, __State>,

fn deserialize_state<__D>( __state: &__State, __deserializer: __D, ) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

impl<'s, V> Drive<'s, V> for AsmOptions

where V: Visitor + Visit<'s, bool>,

fn drive_inner(&'s self, visitor: &mut V) -> ControlFlow<V::Break>

Call v.visit() on the immediate contents of self.

impl<'s, V> DriveMut<'s, V> for AsmOptions

where V: Visitor + VisitMut<'s, bool>,

fn drive_inner_mut(&'s mut self, visitor: &mut V) -> ControlFlow<V::Break>

Call v.visit() on the immediate contents of self.

impl<'s, V> DriveTwo<'s, V> for AsmOptions

where V: Visitor<Break: Default> + VisitTwo<'s, bool>,

fn drive_two_inner( &'s self, other: &'s Self, visitor: &mut V, ) -> ControlFlow<V::Break>

Call v.visit() on the immediate contents of self and other, if they correspond. If the values don’t match up, this returns Break(Default::default()).

impl Eq for AsmOptions

impl PartialEq for AsmOptions

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

Equality operator ==.

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

Inequality operator !=.

impl<__State: ?Sized> SerializeState<__State> for AsmOptions

where bool: SerializeState<__State>,

fn serialize_state<__S>( &self, __state: &__State, __serializer: __S, ) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

impl StructuralPartialEq for AsmOptions