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Support eagerly FPU state save/restore

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Co-authored-by: Shaowei Song <songshaowei.ssw@antgroup.com>
This commit is contained in:
Qingsong Chen
2024-11-28 11:36:09 +00:00
committed by Tate, Hongliang Tian
parent 69c1db772a
commit 5e35704e38
8 changed files with 279 additions and 104 deletions
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18
ostd/src/arch/riscv/cpu/mod.rs
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@ -12,13 +12,13 @@ pub use super::trap::GeneralRegs as RawGeneralRegs;
use super::trap::{TrapFrame, UserContext as RawUserContext};
use crate::user::{ReturnReason, UserContextApi, UserContextApiInternal};
/// Cpu context, including both general-purpose registers and floating-point registers.
/// Cpu context, including both general-purpose registers and FPU state.
#[derive(Clone, Copy, Debug)]
#[repr(C)]
pub struct UserContext {
user_context: RawUserContext,
trap: Trap,
fp_regs: (), // TODO
fpu_state: (), // TODO
cpu_exception_info: CpuExceptionInfo,
}
@ -38,7 +38,7 @@ impl Default for UserContext {
UserContext {
user_context: RawUserContext::default(),
trap: Trap::Exception(Exception::Unknown),
fp_regs: (),
fpu_state: (),
cpu_exception_info: CpuExceptionInfo::default(),
}
}
@ -77,14 +77,14 @@ impl UserContext {
&self.cpu_exception_info
}
/// Returns a reference to the floating point registers
pub fn fp_regs(&self) -> &() {
&self.fp_regs
/// Returns a reference to the FPU state.
pub fn fpu_state(&self) -> &() {
&self.fpu_state
}
/// Returns a mutable reference to the floating point registers
pub fn fp_regs_mut(&mut self) -> &mut () {
&mut self.fp_regs
/// Returns a mutable reference to the FPU state.
pub fn fpu_state_mut(&mut self) -> &mut () {
&mut self.fpu_state
}
/// Sets thread-local storage pointer.