diff --git a/tests/asm/meson.build b/tests/asm/meson.build
index d2d13b8..32f5153 100644
--- a/tests/asm/meson.build
+++ b/tests/asm/meson.build
@@ -185,6 +185,10 @@ asm_tests = {
     'write-ps-ex-1': {},
     'zero-wsz-1': {},
     'invalid-sdisp-1': { 'should_fail': true },
+    'invalid-nr-1': {},
+    'invalid-nr-hi-1': {},
+    'invalid-arg-1': {},
+    'invalid-arg-hi-1': {},
   },
 }
 
diff --git a/tests/asm/syscall/invalid-arg-1.S b/tests/asm/syscall/invalid-arg-1.S
new file mode 100644
index 0000000..c3b06ac
--- /dev/null
+++ b/tests/asm/syscall/invalid-arg-1.S
@@ -0,0 +1,15 @@
+#include "test_start.S"
+
+    {
+        setwd wsz=8, nfx=1
+        sdisp %ctpr1, 0x3
+    }
+        ldd,0,sm 0, 0, %r9
+    {
+        addd,0 0, NR_exit, %r8
+        subd,1,sm %r9, %r9, %r9
+    }
+        call %ctpr1, wbs=4
+        sys_exit 1
+
+#include "test_end.S"
diff --git a/tests/asm/syscall/invalid-arg-hi-1.S b/tests/asm/syscall/invalid-arg-hi-1.S
new file mode 100644
index 0000000..7681960
--- /dev/null
+++ b/tests/asm/syscall/invalid-arg-hi-1.S
@@ -0,0 +1,14 @@
+#include "test_start.S"
+
+    {
+        setwd wsz=8, nfx=1
+        sdisp %ctpr1, 0x3
+    }
+        ldd,0,sm 0, 0, %r9
+    {
+        addd,0 0, NR_exit, %r8
+        subs,1,sm %r9, %r9, %r9
+    }
+        call %ctpr1, wbs=4
+
+#include "test_end.S"
diff --git a/tests/asm/syscall/invalid-nr-1.S b/tests/asm/syscall/invalid-nr-1.S
new file mode 100644
index 0000000..1904982
--- /dev/null
+++ b/tests/asm/syscall/invalid-nr-1.S
@@ -0,0 +1,15 @@
+#include "test_start.S"
+
+    {
+        setwd wsz=8, nfx=1
+        sdisp %ctpr1, 0x3
+    }
+        ldd,0,sm 0, 0, %r8
+        subd,0,sm %r8, %r8, %r8
+    {
+        addd,0,sm %r8, NR_exit, %r8
+        addd,1 0, 1, %r9
+    }
+        call %ctpr1, wbs=4
+
+#include "test_end.S"
diff --git a/tests/asm/syscall/invalid-nr-hi-1.S b/tests/asm/syscall/invalid-nr-hi-1.S
new file mode 100644
index 0000000..a94c343
--- /dev/null
+++ b/tests/asm/syscall/invalid-nr-hi-1.S
@@ -0,0 +1,16 @@
+#include "test_start.S"
+
+    {
+        setwd wsz=8, nfx=1
+        sdisp %ctpr1, 0x3
+    }
+        ldd,0,sm 0, 0, %r8
+        subd,0,sm %r8, %r8, %r8
+    {
+        adds,0 0, NR_exit, %r8
+        addd,1 0, 0, %r9
+    }
+        call %ctpr1, wbs=4
+        sys_exit 1
+
+#include "test_end.S"