Fix incorrect Sysno::len() on mips

jasonwhite · Jun 29, 2022 · 9522ad2 · 9522ad2
1 parent e197cbe
commit 9522ad2
Show file tree

Hide file tree

Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/src/arch/macros.rs b/src/arch/macros.rs
@@ -91,7 +91,7 @@ macro_rules! syscall_enum {
 
             /// Returns the length of the syscall table, including any gaps.
             pub const fn len() -> usize {
-                Self::last().id() as usize + 1
+                (Self::last().id() - Self::first().id()) as usize + 1
             }
 
             /// Returns an iterator that iterates over all possible syscalls.

diff --git a/src/lib.rs b/src/lib.rs
@@ -260,4 +260,10 @@ mod tests {
         #[cfg(target_arch = "x86")]
         assert_eq!(Sysno::first(), Sysno::restart_syscall);
     }
+
+    #[test]
+    fn test_syscall_len() {
+        assert!(Sysno::len() > 300);
+        assert!(Sysno::len() < 1000);
+    }
 }