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Add ET_EXEC ELF loading and validation, and a non-working ET_REL

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implementation, running support, also basic syscalls to test if it
works. add a syscall ABI and a new libxunil ABI for calling back to the
kernel with syscalls, add user mode protection when running ELF, add TSS
Privilege Stack table to fix GPF issues, add invalid opcode handler, fix
rust panics using rectangle_filled instead of fb clear. Also add a hello
world example binary that runs in usermode at startup.
This commit is contained in:
csd4ni3l
2026-04-01 14:06:20 +02:00
parent aa5a2a6da6
commit 9aeff321f8
27 changed files with 1059 additions and 97 deletions
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15
kernel/src/main.rs
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@@ -15,13 +15,9 @@ pub mod driver;
pub mod userspace_stub;
pub mod util;
use crate::arch::arch::{infinite_idle, init, kernel_crash, sleep};
use crate::arch::arch::{infinite_idle, init, kernel_crash};
use crate::driver::graphics::base::rgb;
use crate::driver::graphics::framebuffer::{init_framebuffer, with_framebuffer};
use crate::driver::graphics::primitives::{
circle_filled, circle_outline, rectangle_filled, rectangle_outline, triangle_outline,
};
use crate::driver::mouse::MOUSE;
use crate::driver::serial::{ConsoleWriter, init_serial_console, with_serial_console};
use crate::driver::timer::TIMER;
use crate::userspace_stub::userspace_init;
@@ -98,8 +94,8 @@ unsafe extern "C" fn kmain() -> ! {
// removed by the linker.
assert!(BASE_REVISION.is_supported());
let mapper;
let frame_allocator;
let mut mapper;
let mut frame_allocator;
if let Some(hhdm_response) = HHDM_REQUEST.get_response() {
if let Some(memory_map_response) = MEMORY_MAP_REQUEST.get_response() {
@@ -125,14 +121,13 @@ unsafe extern "C" fn kmain() -> ! {
println!("Could not get date at boot. Will default to 0.")
}
userspace_init()
userspace_init(&mut frame_allocator, &mut mapper)
}
#[panic_handler]
fn rust_panic(_info: &core::panic::PanicInfo) -> ! {
with_framebuffer(|mut fb| {
let (width, height) = (fb.width.clone(), fb.height.clone());
rectangle_filled(&mut fb, 0, 0, width, height, rgb(180, 0, 0));
fb.clear(rgb(180, 0, 0));
with_serial_console(|console| {
console.clear(5, 5);