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// SPDX-FileCopyrightText: edef <edef@unfathomable.blue>
// SPDX-License-Identifier: OSL-3.0
use {crate::Process, std::ffi::CString};
pub(crate) trait ProcessSyscallArg: Sized {
fn try_from_process_reg(process: &Process, reg: u64) -> Option<Self>;
}
impl ProcessSyscallArg for CString {
fn try_from_process_reg(process: &Process, reg: u64) -> Option<Self> {
process.read_mem_cstr(reg).ok()
}
}
impl<T: SyscallArg> ProcessSyscallArg for T {
fn try_from_process_reg(_process: &Process, reg: u64) -> Option<Self> {
SyscallArg::try_from_reg(reg)
}
}
pub(crate) trait SyscallArg: Sized {
fn try_from_reg(reg: u64) -> Option<Self>;
}
impl SyscallArg for u16 {
fn try_from_reg(reg: u64) -> Option<Self> {
reg.try_into().ok()
}
}
impl SyscallArg for u32 {
fn try_from_reg(reg: u64) -> Option<Self> {
reg.try_into().ok()
}
}
impl SyscallArg for u64 {
fn try_from_reg(reg: u64) -> Option<Self> {
Some(reg)
}
}
impl SyscallArg for i32 {
fn try_from_reg(reg: u64) -> Option<Self> {
Some(u32::try_from(reg).ok()? as i32)
}
}
impl SyscallArg for *mut i32 {
fn try_from_reg(reg: u64) -> Option<Self> {
Some(usize::try_from_reg(reg)? as *mut i32)
}
}
impl SyscallArg for usize {
fn try_from_reg(reg: u64) -> Option<Self> {
reg.try_into().ok()
}
}
impl SyscallArg for *const u8 {
fn try_from_reg(reg: u64) -> Option<Self> {
Some(usize::try_from_reg(reg)? as *const u8)
}
}
impl SyscallArg for *mut u8 {
fn try_from_reg(reg: u64) -> Option<Self> {
Some(usize::try_from_reg(reg)? as *mut u8)
}
}
impl SyscallArg for *mut () {
fn try_from_reg(reg: u64) -> Option<Self> {
Some(usize::try_from_reg(reg)? as *mut ())
}
}
impl SyscallArg for *const () {
fn try_from_reg(reg: u64) -> Option<Self> {
Some(usize::try_from_reg(reg)? as *const ())
}
}
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