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Basic allocations in rust user-space.

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This commit is contained in:
Drew Galbraith 2024-07-26 15:20:21 -07:00
parent 40a50e8d00
commit 32ccbedb7a
7 changed files with 127 additions and 35 deletions
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45
rust/lib/mammoth/src/lib.rs
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@ -4,54 +4,34 @@
#![allow(non_snake_case)]
use core::ffi::c_void;
use core::panic::PanicInfo;
include!("bindings.rs");
pub fn syscall<T>(id: u64, req: &T) -> u64 {
unsafe { SysCall1(id, req as *const T as *const c_void) }
}
#[panic_handler]
fn panic(_info: &PanicInfo) -> ! {
// Internal error.
let req = ZProcessExitReq { code: 0x100 };
syscall(kZionProcessExit, &req);
unreachable!()
}
pub fn debug(msg: &str) {
let req = ZDebugReq {
message: msg.as_ptr() as *const i8,
size: msg.len() as u64,
};
syscall(kZionDebug, &req);
}
pub mod mem;
pub mod syscall;
// From /zion/include/ztypes.h
const Z_INIT_SELF_PROC: u64 = 0x4000_0000;
const Z_INIT_SELF_VMAS: u64 = 0x4000_0001;
const Z_INIT_ENDPOINT: u64 = 0x4100_0000;
static mut SELF_PROC_CAP: zcap = 0;
static mut SELF_VMAS_CAP: zcap = 0;
static mut INIT_ENDPOINT: zcap = 0;
static mut SELF_PROC_CAP: syscall::zcap = 0;
static mut SELF_VMAS_CAP: syscall::zcap = 0;
static mut INIT_ENDPOINT: syscall::zcap = 0;
pub fn parse_init_port(port_cap: zcap) {
pub fn parse_init_port(port_cap: syscall::zcap) {
loop {
let mut num_bytes: u64 = 8;
let mut init_sig: u64 = 0;
let mut caps: [u64; 1] = [0];
let mut num_caps: u64 = 1;
let req = ZPortPollReq {
let req = syscall::ZPortPollReq {
port_cap,
num_bytes: &mut num_bytes as *mut u64,
data: &mut init_sig as *mut u64 as *mut c_void,
caps: &mut caps as *mut u64,
num_caps: &mut num_caps as *mut u64,
};
let resp = syscall(kZionPortPoll, &req);
let resp = syscall::syscall(syscall::kZionPortPoll, &req);
if resp != 0 {
break;
}
@ -60,7 +40,7 @@ pub fn parse_init_port(port_cap: zcap) {
Z_INIT_SELF_PROC => SELF_PROC_CAP = caps[0],
Z_INIT_SELF_VMAS => SELF_VMAS_CAP = caps[0],
Z_INIT_ENDPOINT => INIT_ENDPOINT = caps[0],
_ => debug("Unknown Cap in Init"),
_ => syscall::debug("Unknown Cap in Init"),
}
}
}
@ -70,15 +50,16 @@ pub fn parse_init_port(port_cap: zcap) {
macro_rules! define_entry {
() => {
#[no_mangle]
pub extern "C" fn _start(init_port: mammoth::zcap) -> ! {
pub extern "C" fn _start(init_port: mammoth::syscall::zcap) -> ! {
extern "C" {
fn main() -> z_err_t;
}
mammoth::parse_init_port(init_port);
mammoth::mem::init_heap();
unsafe {
let err = main();
let req = mammoth::ZProcessExitReq { code: err };
mammoth::syscall(mammoth::kZionProcessExit, &req);
let req = mammoth::syscall::ZProcessExitReq { code: err };
mammoth::syscall::syscall(mammoth::syscall::kZionProcessExit, &req);
}
unreachable!()
}