diff --git a/libc/arch-arm/syscalls/ftruncate64.S b/libc/arch-arm/syscalls/ftruncate64.S
new file mode 100644
index 0000000..37b4744
--- /dev/null
+++ b/libc/arch-arm/syscalls/ftruncate64.S
@@ -0,0 +1,19 @@
+/* autogenerated by gensyscalls.py */
+#include <sys/linux-syscalls.h>
+
+    .text
+    .type ftruncate64, #function
+    .globl ftruncate64
+    .align 4
+    .fnstart
+
+ftruncate64:
+    .save   {r4, r7}
+    stmfd   sp!, {r4, r7}
+    ldr     r7, =__NR_ftruncate64
+    swi     #0
+    ldmfd   sp!, {r4, r7}
+    movs    r0, r0
+    bxpl    lr
+    b       __set_syscall_errno
+    .fnend
diff --git a/libc/arch-arm/syscalls/__pread64.S b/libc/arch-arm/syscalls/pread64.S
similarity index 85%
rename from libc/arch-arm/syscalls/__pread64.S
rename to libc/arch-arm/syscalls/pread64.S
index ea645e1..a54084c 100644
--- a/libc/arch-arm/syscalls/__pread64.S
+++ b/libc/arch-arm/syscalls/pread64.S
@@ -2,12 +2,12 @@
 #include <sys/linux-syscalls.h>
 
     .text
-    .type __pread64, #function
-    .globl __pread64
+    .type pread64, #function
+    .globl pread64
     .align 4
     .fnstart
 
-__pread64:
+pread64:
     mov     ip, sp
     .save   {r4, r5, r6, r7}
     stmfd   sp!, {r4, r5, r6, r7}
diff --git a/libc/arch-arm/syscalls/__pwrite64.S b/libc/arch-arm/syscalls/pwrite64.S
similarity index 85%
rename from libc/arch-arm/syscalls/__pwrite64.S
rename to libc/arch-arm/syscalls/pwrite64.S
index d1263be..f9d56b2 100644
--- a/libc/arch-arm/syscalls/__pwrite64.S
+++ b/libc/arch-arm/syscalls/pwrite64.S
@@ -2,12 +2,12 @@
 #include <sys/linux-syscalls.h>
 
     .text
-    .type __pwrite64, #function
-    .globl __pwrite64
+    .type pwrite64, #function
+    .globl pwrite64
     .align 4
     .fnstart
 
-__pwrite64:
+pwrite64:
     mov     ip, sp
     .save   {r4, r5, r6, r7}
     stmfd   sp!, {r4, r5, r6, r7}