48 lines
1.2 KiB
Zig
48 lines
1.2 KiB
Zig
const system = @import("system");
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const vm = @import("arch/vm.zig");
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const syscalls = system.syscalls;
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const buffer = system.ring_buffer;
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// FIXME: Make arch-specific.
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const PAGE_SIZE = 4096;
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fn setupKernelRingBuffer(base: u64) !buffer.RingBuffer {
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const phys = vm.PhysFrame{ .address = try syscalls.allocFrame() };
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const data: [*]u8 = @ptrCast(phys.virtualPointer(u8, base));
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try syscalls.setEventQueue(1, phys.address);
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return buffer.RingBuffer.init(data, PAGE_SIZE, true);
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}
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export fn _start(base: u64, address: u64) callconv(.C) noreturn {
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const mapper = vm.MemoryMapper.create(.{ .address = address }, base);
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syscalls.print(base);
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syscalls.print(address);
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syscalls.print(@intFromPtr(mapper.directory));
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const phys = syscalls.allocFrame() catch {
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while (true) {}
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};
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vm.map(&mapper, 0x6000000, .{ .address = phys }, @intFromEnum(vm.Flags.ReadWrite) | @intFromEnum(vm.Flags.User)) catch {
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while (true) {}
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};
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const event_queue = setupKernelRingBuffer(base) catch {
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while (true) {}
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};
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_ = event_queue;
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var counter: u64 = 0;
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while (true) : (counter += 4) {
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syscalls.sleep(1000);
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syscalls.print(counter);
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}
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}
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