2 files changed, 29 insertions, 0 deletions
diff --git a/src/arch/x86_64/context.rs b/src/arch/x86_64/context.rs
new file mode 100644
index 0000000..08fd3b6
--- /dev/null
+++ b/src/arch/x86_64/context.rs
@@ -0,0 +1,28 @@
+/// high level representation of the callee saved registers for thread context. The caller
+/// saved registers will is pushed into the stack already upon the interrupt entry
+/// fpstate is NOT saved here
+#[repr(C)]
+pub struct Context {
+	rbx: u64,
+	r12: u64,
+	r13: u64,
+	r14: u64,
+	r15: u64,
+	rbp: u64,
+	rsp: u64,
+}
+
+/// prepare the thread (coroutine) for the first execution
+pub unsafe fn settle(){
+	todo!()
+	// it will be something like this...
+	// void **sp = (void**)tos;
+	// *(--sp) = object;      // 7th parameter for kickoff
+	// *(--sp) = (void*)0;    // return address
+	// *(--sp) = kickoff;            // address
+	// regs->rsp = sp;
+}
+
+pub unsafe fn switch(ctx_curr:usize, ctx_next:usize){
+	todo!()
+}
diff --git a/src/arch/x86_64/mod.rs b/src/arch/x86_64/mod.rs
index 715c19f..03d2af0 100644
--- a/src/arch/x86_64/mod.rs
+++ b/src/arch/x86_64/mod.rs
@@ -3,3 +3,4 @@ pub mod interrupt;
 pub mod io_port;
 pub mod mem;
 pub mod misc;
+pub mod context;