diff --git a/libc/arch-mips64/syscalls/ftruncate.S b/libc/arch-mips64/syscalls/ftruncate.S
new file mode 100644
index 0000000..507825d
--- /dev/null
+++ b/libc/arch-mips64/syscalls/ftruncate.S
@@ -0,0 +1,34 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <asm/unistd.h>
+#include <machine/asm.h>
+#include <machine/regdef.h>
+    .text
+    .globl ftruncate
+    .align 4
+    .ent ftruncate
+
+ftruncate:
+    .set push
+    .set noreorder
+    li v0, __NR_ftruncate
+    syscall
+    bnez a3, 1f
+    move a0, v0
+    j ra
+    nop
+1:
+    move t0, ra
+    bal     2f
+    nop
+2:
+    .cpsetup ra, t1, 2b
+    LA t9,__set_errno
+    .cpreturn
+    j t9
+    move ra, t0
+    .set pop
+    .end ftruncate
+
+    .globl _C_LABEL(ftruncate64)
+    .equ _C_LABEL(ftruncate64), _C_LABEL(ftruncate)