diff --git a/libc/arch-mips/syscalls/sigaltstack.S b/libc/arch-mips/syscalls/sigaltstack.S
new file mode 100644
index 0000000..d2a4a9a
--- /dev/null
+++ b/libc/arch-mips/syscalls/sigaltstack.S
@@ -0,0 +1,22 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+    .text
+    .globl sigaltstack
+    .align 4
+    .ent sigaltstack
+
+sigaltstack:
+    .set noreorder
+    .cpload $t9
+    li $v0, __NR_sigaltstack
+    syscall
+    bnez $a3, 1f
+    move $a0, $v0
+    j $ra
+    nop
+1:
+    la $t9,__set_errno
+    j $t9
+    nop
+    .set reorder
+    .end sigaltstack