Struct trapframe::UserContext

#[repr(C)]pub struct UserContext {
    pub general: GeneralRegs,
    pub trap_num: usize,
    pub error_code: usize,
}

User space context

Fields

general: GeneralRegs

trap_num: usize

error_code: usize

Implementations

impl UserContext

pub fn run_fncall(&mut self)

Go to user context by function return, within the same privilege level.

User program should call syscall_fn_entry() to return back. Trap reason and error code will always be set to 0x100 and 0.

impl UserContext

pub fn get_syscall_num(&self) -> usize

Get number of syscall

pub fn get_syscall_ret(&self) -> usize

Get return value of syscall

pub fn set_syscall_ret(&mut self, ret: usize)

Set return value of syscall

pub fn get_syscall_args(&self) -> [usize; 6]

Get syscall args

pub fn set_ip(&mut self, ip: usize)

Set instruction pointer

pub fn set_sp(&mut self, sp: usize)

Set stack pointer

pub fn get_sp(&self) -> usize

Get stack pointer

pub fn set_tls(&mut self, tls: usize)

Set tls pointer

Trait Implementations

impl Clone for UserContext

fn clone(&self) -> UserContext

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for UserContext

impl Debug for UserContext

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

Formats the value using the given formatter.

impl Default for UserContext

fn default() -> UserContext

Returns the "default value" for a type.

impl Eq for UserContext

impl PartialEq<UserContext> for UserContext

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl StructuralEq for UserContext

impl StructuralPartialEq for UserContext