Struct FpuContext 

#[repr(C, align(16))]
pub struct FpuContext {
    pub f: [u64; 32],
    pub fcsr: u32,
}

FPU context for RISC-V 64-bit (F/D extensions)

Contains all floating-point registers and the floating-point control/status register. This is saved/restored during task context switches to preserve FPU state.

Fields

f: [u64; 32]

Floating-point registers f0-f31 (64-bit each for D extension)

fcsr: u32

Floating-point control and status register (fcsr)

Implementations

impl FpuContext

pub const fn new() -> Self

Create a new zeroed FPU context

pub unsafe fn save(&mut self)

Save the current FPU state to this context

Safety

This function directly accesses FPU registers. The FPU must be enabled (sstatus.FS != Off) before calling this function.

pub unsafe fn restore(&self)

Restore the FPU state from this context

Safety

This function directly accesses FPU registers. The FPU must be enabled (sstatus.FS != Off) before calling this function.

Trait Implementations

impl Clone for FpuContext

fn clone(&self) -> FpuContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FpuContext

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

Formats the value using the given formatter.

impl Default for FpuContext

fn default() -> Self

Returns the “default value” for a type.