Squashed some bugs; implemented first iteration of kernel items

user/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "user"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

user/src/arch/mod.rs

@@ -0,0 +1,6 @@
+//! Architecture-specific stuff, mainly syscall methods.
+
+#[macro_use]
+mod x86;
+
+pub use x86::*;

user/src/arch/x86/mod.rs

@@ -0,0 +1,62 @@
+//! x86 syscall method.
+
+/// Syscall method.
+#[macro_export]
+macro_rules! syscall {
+    ($id: expr) => {
+        unsafe {
+            let out = 0u32;
+            asm!(
+                "int 0xA0",
+                id = in("eax") const $id,
+                out("eax") out
+            )
+            out
+        }
+    };
+    ($id: expr, $d0: expr) => {
+        unsafe {
+            let out = 0u32;
+            let d0 = $d0;
+            asm!(
+                "int 0xA0",
+                id = in("eax") const $id,
+                d0 = in("ebx") $d0,
+                out("eax") out
+            )
+            out
+        }
+    };
+    ($id: expr, $d0: expr, $d1: expr) => {
+        unsafe {
+            let out = 0u32;
+            let d0 = $d0;
+            let d1 = $d1;
+            asm!(
+                "int 0xA0",
+                id = in("eax") const $id,
+                d0 = in("ebx") $d0,
+                d1 = in("ecx") $d1,
+                out("eax") out
+            )
+            out
+        }
+    };
+    ($id: expr, $d0: expr, $d1: expr, $d2: expr) => {
+        unsafe {
+            let out = 0u32;
+            let d0 = $d0;
+            let d1 = $d1;
+            let d2 = $d2;
+            asm!(
+                "int 0xA0",
+                id = in("eax") const $id,
+                d0 = in("ebx") $d0,
+                d1 = in("ecx") $d1,
+                d2 = in("edx") $d2,
+                out("eax") out
+            )
+            out
+        }
+    }
+}

user/src/lib.rs

@@ -0,0 +1,5 @@
+#[warn(missing_docs)]
+
+mod arch;
+
+use arch::*;