LibQ: Add a userspace lib to the project

Cargo.toml

@@ -23,7 +23,8 @@ members = [
   "crates/mem",
   "crates/arch-macro",
   "crates/boolvec",
-  "user/dummy"
+  "user/dummy",
+  "user/libq"
 ]
 
 default-members = ["meta"]
@@ -104,6 +105,6 @@ overflow-checks = true
 inherits = "release"
 panic = "abort"
 opt-level=0
-strip = false
+strip = true
 debug = 1
 overflow-checks = true

kernel/src/main.rs

@@ -72,8 +72,8 @@ fn main(kbh: &KernelBootHeader) {
     );
 
     gdt::init_kernel_gdt();
-    // gdt::set_stack_for_privl(0x200000000000 as *mut u8, Ring0);
-    gdt::set_stack_for_privl(0x3000 as *mut u8, Ring0);
+    gdt::set_stack_for_privl(0x200000000000 as *mut u8, Ring0);
+    // gdt::set_stack_for_privl(0x3000 as *mut u8, Ring0);
     unsafe { gdt::load_tss() };
     int::attach_interrupts();
     int::attach_syscall();

user/libq/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "libq"
+edition = "2024"
+version.workspace = true
+authors.workspace = true
+description.workspace = true
+documentation.workspace = true
+
+[dependencies]

user/libq/src/lib.rs

@@ -0,0 +1,14 @@
+pub fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}