58 lines
1.4 KiB
Zig
58 lines
1.4 KiB
Zig
const system = @import("system");
|
|
|
|
const vm = system.vm;
|
|
const syscalls = system.syscalls;
|
|
const buffer = system.ring_buffer;
|
|
|
|
// FIXME: Make arch-specific.
|
|
const PAGE_SIZE = 4096;
|
|
|
|
fn setupKernelRingBuffer(base: u64) !buffer.RingBuffer {
|
|
const phys = vm.PhysFrame{ .address = try syscalls.allocFrame() };
|
|
|
|
const data: [*]u8 = @ptrCast(phys.virtualPointer(u8, base));
|
|
|
|
try syscalls.setEventQueue(syscalls.getThreadId(), phys.address);
|
|
|
|
return buffer.RingBuffer.init(data, PAGE_SIZE, true);
|
|
}
|
|
|
|
fn setTokens() void {
|
|
var tokens: u64 = 0;
|
|
tokens |= @intFromEnum(system.kernel.Token.Root);
|
|
tokens |= @intFromEnum(system.kernel.Token.PhysicalMemory);
|
|
tokens |= @intFromEnum(system.kernel.Token.CreateProcess);
|
|
syscalls.setTokens(syscalls.getThreadId(), tokens) catch {};
|
|
}
|
|
|
|
fn discoverThreadLimit() u64 {
|
|
var pid: u64 = 1;
|
|
while (true) {
|
|
_ = syscalls.getPriority(pid) catch return (pid - 1);
|
|
pid += 1;
|
|
}
|
|
}
|
|
|
|
export fn _start(base: u64, address: u64) callconv(.C) noreturn {
|
|
setTokens();
|
|
|
|
const mapper = vm.MemoryMapper.create(.{ .address = address }, base);
|
|
_ = mapper;
|
|
|
|
const threads = discoverThreadLimit();
|
|
syscalls.print(threads);
|
|
|
|
const event_queue = setupKernelRingBuffer(base) catch {
|
|
while (true) {}
|
|
};
|
|
|
|
_ = event_queue;
|
|
|
|
var counter: u64 = 0;
|
|
|
|
while (true) : (counter += 4) {
|
|
syscalls.sleep(1000);
|
|
syscalls.print(counter);
|
|
}
|
|
}
|