diff --git a/README.rst b/README.rst
index 6eb0d85..68c133b 100644
--- a/README.rst
+++ b/README.rst
@@ -44,10 +44,10 @@ Taged at every end of month, but there are only a few commits, it can be skipped
 Available Architectures
 ------------------------------------
 
-- FreeBSD i386/amd64
+- FreeBSD i386/amd64/arm
 - Linux i386/amd64/arm(raspberry pi)
 - Windows/amd64
-- Darwin/amd64
+- Darwin i386/amd64
 - OpenBDS amd64 (Thank you @mpfz0r!)
 
 All works are implemented without cgo by porting c struct to golang struct.
diff --git a/host/host_darwin_386.go b/host/host_darwin_386.go
new file mode 100644
index 0000000..c3596f9
--- /dev/null
+++ b/host/host_darwin_386.go
@@ -0,0 +1,19 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs types_darwin.go
+
+package host
+
+type Utmpx struct {
+	User      [256]int8
+	ID        [4]int8
+	Line      [32]int8
+	Pid       int32
+	Type      int16
+	Pad_cgo_0 [6]byte
+	Tv        Timeval
+	Host      [256]int8
+	Pad       [16]uint32
+}
+type Timeval struct {
+	Sec int32
+}
diff --git a/host/host_freebsd_arm.go b/host/host_freebsd_arm.go
new file mode 100644
index 0000000..ac74980
--- /dev/null
+++ b/host/host_freebsd_arm.go
@@ -0,0 +1,44 @@
+// Created by cgo -godefs - DO NOT EDIT
+// cgo -godefs types_freebsd.go
+
+package host
+
+const (
+	sizeofPtr      = 0x4
+	sizeofShort    = 0x2
+	sizeofInt      = 0x4
+	sizeofLong     = 0x8
+	sizeofLongLong = 0x8
+	sizeOfUtmpx    = 197 // TODO: why should 197, not 0x118
+)
+
+type (
+	_C_short     int16
+	_C_int       int32
+	_C_long      int32
+	_C_long_long int64
+)
+
+type Utmp struct {
+	Line [8]int8
+	Name [16]int8
+	Host [16]int8
+	Time int32
+}
+
+type Utmpx struct {
+	Type int16
+	Tv   Timeval
+	Id   [8]int8
+	Pid  int32
+	User [32]int8
+	Line [16]int8
+	Host [125]int8
+	//      Host [128]int8
+	//      X__ut_spare [64]int8
+}
+
+type Timeval struct {
+	Sec  [4]byte
+	Usec [3]byte
+}