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//! Task State Segment
const gdt = @import("../gdt/gdt.zig");
pub const constants = @import("constants/constants.zig");
pub const types = @import("types/types.zig");
pub const stacks = @import("stacks/stacks.zig");
pub const init = @import("init/init.zig");
pub const state = @import("state.zig");
pub const Tss = types.Tss;
pub const CoreTss = types.CoreTss;
pub fn initialize_boot() void {
const tss = state.get_boot_tss();
tss.clear();
state.set_initialized();
}
pub fn initialize_core(core_id: u16, kernel_stack_top: u64) !*CoreTss {
const core_tss = state.register_core(core_id) orelse return error.TooManyCores;
core_tss.tss.clear();
core_tss.tss.set_rsp0(kernel_stack_top);
try init.setup_core_tss(core_tss);
return core_tss;
}
pub fn get_boot_tss() *Tss {
return state.get_boot_tss();
}
pub fn get_boot_tss_address() u64 {
return state.get_boot_tss_address();
}
pub fn get_core_tss(core_id: u16) ?*CoreTss {
return state.get_core_tss(core_id);
}
pub fn get_current_rsp0(core_id: u16) u64 {
if (state.get_core_tss(core_id)) |core_tss| {
return core_tss.tss.rsp0;
}
return state.get_boot_tss().rsp0;
}
pub fn set_current_rsp0(core_id: u16, stack_top: u64) void {
if (state.get_core_tss(core_id)) |core_tss| {
core_tss.tss.set_rsp0(stack_top);
} else {
state.get_boot_tss().set_rsp0(stack_top);
}
}
pub fn is_initialized() bool {
return state.is_initialized();
}
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