Struct polkavm::CallArgs

pub struct CallArgs<'a, T> { /* private fields */ }

A helper struct used when calling into a function exported by the guest program.

Implementations

impl<'a, T> CallArgs<'a, T>

pub fn new(user_data: &'a mut T, export_index: ExportIndex) -> Self

Creates a new CallArgs.

pub fn reset_memory_after_call(&mut self, value: bool) -> &mut Self

Decides whether the memory of the instance will be reset after the call.

Default: false

pub fn reg(&mut self, reg: Reg, value: u32) -> &mut Self

Sets a given register to the given value before the call.

The default value for SP and RA is 0xffff0000, and for every other register it is zero.

pub fn args_untyped(&mut self, args: &[u32]) -> &mut Self

Sets the argument registers to the given values.

A shorthand for successively calling set_reg with Reg::A0, Reg::A1, …, Reg::A5.

Will panic if args has more than 6 elements.

pub fn args_typed<FnArgs>(&mut self, args: FnArgs) -> &mut Self

where FnArgs: FuncArgs,

Sets the argument registers to the given values according to the default ABI.