proc: add basic task struct

Signed-off-by: Tianhao Wang <shrik3@mailbox.org>

3 files changed, 15 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
index f1499c4..e711688 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -11,6 +11,7 @@ mod io;
 mod machine;
 mod mm;
 use crate::machine::key::Modifiers;
+mod proc;
 use arch::x86_64::interrupt;
 use arch::x86_64::interrupt::pic_8259;
 use arch::x86_64::interrupt::pic_8259::PicDeviceInt;
diff --git a/src/proc/mod.rs b/src/proc/mod.rs
new file mode 100644
index 0000000..cdafe4a
--- /dev/null
+++ b/src/proc/mod.rs
@@ -0,0 +1 @@
+pub mod task;
diff --git a/src/proc/task.rs b/src/proc/task.rs
new file mode 100644
index 0000000..0ff2065
--- /dev/null
+++ b/src/proc/task.rs
@@ -0,0 +1,13 @@
+use crate::arch::x86_64::arch_regs;
+
+/// currently only kernelSp and Context are important.
+/// the task struct will be placed on the starting addr (low addr) of the kernel stack.
+/// therefore we can retrive the task struct at anytime by masking the kernel stack
+#[repr(C)]
+#[repr(packed)]
+pub struct Task {
+	pub task_id: u32,
+	pub kernel_stack: u64,
+	pub user_stack: u64,
+	pub context: arch_regs::Context64,
+}