RawCallableJitFunction

Struct RawCallableJitFunction 

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pub struct RawCallableJitFunction { /* private fields */ }
Expand description

A raw JIT-compiled function for manual type conversion

This is a type-erased version of CallableJitFunction that allows manual function pointer conversion for cases not covered by the predefined call() methods.

§Usage

let raw_func = RawCallableJitFunction::new(code)?;
 
// Manual conversion to any function type
let func: extern "C" fn(u64, u64, u64, u64, u64, u64, u64, u64) -> u64 = 
    unsafe { raw_func.as_fn() };
let result = func(1, 2, 3, 4, 5, 6, 7, 8);

Implementations§

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impl RawCallableJitFunction

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pub fn new(code: &[u8]) -> Result<Self, JitError>

Create a new raw callable JIT function from instruction bytes

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pub unsafe fn as_fn<F>(&self) -> F

Convert to a function pointer of the specified type

§Safety

The caller must ensure that:

  • The function signature F matches the actual assembled code
  • The assembled code follows the expected calling convention (usually C ABI)
  • The function pointer is called with valid arguments
§Example
let raw_func = RawCallableJitFunction::new(code)?;
 
// For complex signatures not covered by CallableJitFunction
let func: extern "C" fn(u64, u64, u64, u64, u64, u64, u64, u64) -> u64 = 
    unsafe { raw_func.as_fn() };
let result = func(1, 2, 3, 4, 5, 6, 7, 8);

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.