82 lines
2.1 KiB
Rust
82 lines
2.1 KiB
Rust
//! Environment call handling routines
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use {
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super::{mem::Memory, Vm},
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crate::{arch, ipc::buffer::IpcBuffer, kmain::IPC_BUFFERS},
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log::{debug, error, info, trace, warn},
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};
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pub fn handler(vm: &mut Vm) {
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let r1 = vm.registers[1].cast::<u64>();
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debug!("Ecall number {:?}", r1);
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trace!("Register dump: {:?}", vm.registers);
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match r1 {
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0 => {
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// TODO: explode computer
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// hello world ecall
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for x in 0u64..=255 {
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vm.registers[x as usize] = x.into();
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}
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}
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1 => {
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// Make buffer
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let bounded = match vm.registers[2].cast::<u64>() {
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0 => false,
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1 => true,
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_ => {
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panic!("Bad");
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}
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};
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let length = vm.registers[3].cast::<u64>();
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let mut buffs = IPC_BUFFERS.lock();
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let abc;
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match bounded {
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false => {
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abc = IpcBuffer::new(false, 0);
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}
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true => {
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abc = IpcBuffer::new(true, length);
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}
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};
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let buff_id = arch::hardware_random_u64();
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buffs.insert(buff_id, abc);
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debug!("Buffer ID: {}", buff_id);
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}
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2 => {
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// Delete buffer
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}
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3 => {
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// Send a message to a buffer
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let r254 = vm.registers[254].cast::<u64>();
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let r253 = vm.registers[253].cast::<u64>();
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let r252 = vm.registers[252].cast::<u64>();
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let buffer_id = r254;
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let mem_addr = r253;
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let length = r252 as usize;
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trace!("IPC address: {:?}", mem_addr);
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use alloc::vec::Vec;
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match buffer_id {
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1 => {
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error!("Logging via IPC isn't quite ready")
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}
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buffer_id => {
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info!("Message has been sent to {}", buffer_id)
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}
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}
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}
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// 4
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// 5
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_ => {
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log::error!("Syscall unknown {:?}", r1);
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}
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}
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}
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