54 lines
1.3 KiB
Zig
54 lines
1.3 KiB
Zig
const kernel = @import("kernel.zig");
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const target = @import("builtin").target;
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fn syscall(num: kernel.SystemCall, arg0: u64, arg1: u64) i64 {
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return switch (target.cpu.arch) {
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.x86_64 => asm volatile ("int $66"
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: [result] "=r" (-> i64),
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: [num] "{rax}" (@intFromEnum(num)),
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[arg0] "{rdi}" (arg0),
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[arg1] "{rsi}" (arg1),
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),
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else => @compileError("unsupported architecture"),
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};
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}
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pub fn print(arg: u64) void {
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_ = syscall(.Print, arg, 0);
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}
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pub fn allocFrame() !usize {
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const retval = syscall(.AllocFrame, 0, 0);
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if (retval < 0) return error.OutOfMemory;
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return @bitCast(retval);
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}
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pub fn lockFrame(address: u64) void {
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_ = syscall(.LockFrame, address, 0);
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}
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pub fn freeFrame(address: u64) void {
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_ = syscall(.FreeFrame, address, 0);
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}
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pub fn yield() void {
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_ = syscall(.Yield, 0, 0);
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}
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pub fn setPriority(priority: u8) void {
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_ = syscall(.SetPriority, priority, 0);
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}
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pub fn getPriority() u8 {
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return @truncate(@as(u64, @bitCast(syscall(.GetPriority, 0, 0))));
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}
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pub fn sleep(ms: u64) void {
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_ = syscall(.Sleep, ms, 0);
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}
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pub fn setEventQueue(pid: u64, address: u64) !void {
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const retval = syscall(.SetEventQueue, pid, address);
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if (retval < 0) return error.NoSuchThread;
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}
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