From 6b729908defb57be0c72e47d58b5e64a009d4e93 Mon Sep 17 00:00:00 2001
From: Wang Xuerui <idontknw.wang@gmail.com>
Date: Mon, 14 Nov 2016 22:40:05 +0800
Subject: [PATCH] MIPS: Layout refactor

MIPS32 and MIPS64 userspaces are mostly the same save the obvious ABI
difference, hence most of the const definitions could be shared.

This commit is not introducing any new significant additions, but mostly
just shuffles the existing files around to make the directory structure
more similar to the other, more mature platforms. The structs and extern
fn definitions are not touched. Plus a couple of new consts for MIPS64
to match MIPS32 coverage:

* `RLIM_INFINITY`
* `SYS_gettid`

Passed `libc-test` on Gentoo MIPS64el (n64 ABI), on a Loongson 3A2000
box. The test suite itself needs some more love to actually compile
cleanly on MIPS (`ctest` transitively depends on ancient `libc` version
which doesn't build on MIPS), but let's save that for another day.
---
 src/unix/notbsd/linux/mips/mips32.rs          | 281 +++++++++++++++++
 src/unix/notbsd/linux/{ => mips}/mips64.rs    |  43 +--
 .../notbsd/linux/{mips.rs => mips/mod.rs}     | 289 +-----------------
 src/unix/notbsd/linux/mod.rs                  |   6 +-
 4 files changed, 296 insertions(+), 323 deletions(-)
 create mode 100644 src/unix/notbsd/linux/mips/mips32.rs
 rename src/unix/notbsd/linux/{ => mips}/mips64.rs (78%)
 rename src/unix/notbsd/linux/{mips.rs => mips/mod.rs} (63%)

diff --git a/src/unix/notbsd/linux/mips/mips32.rs b/src/unix/notbsd/linux/mips/mips32.rs
new file mode 100644
index 00000000..8b9c5ca7
--- /dev/null
+++ b/src/unix/notbsd/linux/mips/mips32.rs
@@ -0,0 +1,281 @@
+pub type c_char = i8;
+pub type c_long = i32;
+pub type c_ulong = u32;
+pub type clock_t = i32;
+pub type time_t = i32;
+pub type suseconds_t = i32;
+pub type wchar_t = i32;
+pub type off_t = i32;
+pub type ino_t = u32;
+pub type blkcnt_t = i32;
+pub type blksize_t = i32;
+pub type nlink_t = u32;
+pub type fsblkcnt_t = ::c_ulong;
+pub type fsfilcnt_t = ::c_ulong;
+pub type rlim_t = c_ulong;
+
+s! {
+    pub struct aiocb {
+        pub aio_fildes: ::c_int,
+        pub aio_lio_opcode: ::c_int,
+        pub aio_reqprio: ::c_int,
+        pub aio_buf: *mut ::c_void,
+        pub aio_nbytes: ::size_t,
+        pub aio_sigevent: ::sigevent,
+        __next_prio: *mut aiocb,
+        __abs_prio: ::c_int,
+        __policy: ::c_int,
+        __error_code: ::c_int,
+        __return_value: ::ssize_t,
+        pub aio_offset: off_t,
+        __unused1: [::c_char; 4],
+        __glibc_reserved: [::c_char; 32]
+    }
+
+    pub struct stat {
+        pub st_dev: ::c_ulong,
+        st_pad1: [::c_long; 3],
+        pub st_ino: ::ino_t,
+        pub st_mode: ::mode_t,
+        pub st_nlink: ::nlink_t,
+        pub st_uid: ::uid_t,
+        pub st_gid: ::gid_t,
+        pub st_rdev: ::c_ulong,
+        pub st_pad2: [::c_long; 2],
+        pub st_size: ::off_t,
+        st_pad3: ::c_long,
+        pub st_atime: ::time_t,
+        pub st_atime_nsec: ::c_long,
+        pub st_mtime: ::time_t,
+        pub st_mtime_nsec: ::c_long,
+        pub st_ctime: ::time_t,
+        pub st_ctime_nsec: ::c_long,
+        pub st_blksize: ::blksize_t,
+        pub st_blocks: ::blkcnt_t,
+        st_pad5: [::c_long; 14],
+    }
+
+    pub struct stat64 {
+        pub st_dev: ::c_ulong,
+        st_pad1: [::c_long; 3],
+        pub st_ino: ::ino64_t,
+        pub st_mode: ::mode_t,
+        pub st_nlink: ::nlink_t,
+        pub st_uid: ::uid_t,
+        pub st_gid: ::gid_t,
+        pub st_rdev: ::c_ulong,
+        st_pad2: [::c_long; 2],
+        pub st_size: ::off64_t,
+        pub st_atime: ::time_t,
+        pub st_atime_nsec: ::c_long,
+        pub st_mtime: ::time_t,
+        pub st_mtime_nsec: ::c_long,
+        pub st_ctime: ::time_t,
+        pub st_ctime_nsec: ::c_long,
+        pub st_blksize: ::blksize_t,
+        st_pad3: ::c_long,
+        pub st_blocks: ::blkcnt64_t,
+        st_pad5: [::c_long; 14],
+    }
+
+    pub struct pthread_attr_t {
+        __size: [u32; 9]
+    }
+
+    pub struct sigaction {
+        pub sa_flags: ::c_int,
+        pub sa_sigaction: ::sighandler_t,
+        pub sa_mask: sigset_t,
+        _restorer: *mut ::c_void,
+        _resv: [::c_int; 1],
+    }
+
+    pub struct stack_t {
+        pub ss_sp: *mut ::c_void,
+        pub ss_size: ::size_t,
+        pub ss_flags: ::c_int,
+    }
+
+    pub struct sigset_t {
+        __val: [::c_ulong; 32],
+    }
+
+    pub struct siginfo_t {
+        pub si_signo: ::c_int,
+        pub si_code: ::c_int,
+        pub si_errno: ::c_int,
+        pub _pad: [::c_int; 29],
+    }
+
+    pub struct glob64_t {
+        pub gl_pathc: ::size_t,
+        pub gl_pathv: *mut *mut ::c_char,
+        pub gl_offs: ::size_t,
+        pub gl_flags: ::c_int,
+
+        __unused1: *mut ::c_void,
+        __unused2: *mut ::c_void,
+        __unused3: *mut ::c_void,
+        __unused4: *mut ::c_void,
+        __unused5: *mut ::c_void,
+    }
+
+    pub struct ipc_perm {
+        pub __key: ::key_t,
+        pub uid: ::uid_t,
+        pub gid: ::gid_t,
+        pub cuid: ::uid_t,
+        pub cgid: ::gid_t,
+        pub mode: ::c_uint,
+        pub __seq: ::c_ushort,
+        __pad1: ::c_ushort,
+        __unused1: ::c_ulong,
+        __unused2: ::c_ulong
+    }
+
+    pub struct shmid_ds {
+        pub shm_perm: ::ipc_perm,
+        pub shm_segsz: ::size_t,
+        pub shm_atime: ::time_t,
+        pub shm_dtime: ::time_t,
+        pub shm_ctime: ::time_t,
+        pub shm_cpid: ::pid_t,
+        pub shm_lpid: ::pid_t,
+        pub shm_nattch: ::shmatt_t,
+        __unused4: ::c_ulong,
+        __unused5: ::c_ulong
+    }
+
+    pub struct msqid_ds {
+        pub msg_perm: ::ipc_perm,
+        #[cfg(target_endian = "big")]
+        __glibc_reserved1: ::c_ulong,
+        pub msg_stime: ::time_t,
+        #[cfg(target_endian = "little")]
+        __glibc_reserved1: ::c_ulong,
+        #[cfg(target_endian = "big")]
+        __glibc_reserved2: ::c_ulong,
+        pub msg_rtime: ::time_t,
+        #[cfg(target_endian = "little")]
+        __glibc_reserved2: ::c_ulong,
+        #[cfg(target_endian = "big")]
+        __glibc_reserved3: ::c_ulong,
+        pub msg_ctime: ::time_t,
+        #[cfg(target_endian = "little")]
+        __glibc_reserved3: ::c_ulong,
+        __msg_cbytes: ::c_ulong,
+        pub msg_qnum: ::msgqnum_t,
+        pub msg_qbytes: ::msglen_t,
+        pub msg_lspid: ::pid_t,
+        pub msg_lrpid: ::pid_t,
+        __glibc_reserved4: ::c_ulong,
+        __glibc_reserved5: ::c_ulong,
+    }
+
+    pub struct statfs {
+        pub f_type: ::c_long,
+        pub f_bsize: ::c_long,
+        pub f_frsize: ::c_long,
+        pub f_blocks: ::fsblkcnt_t,
+        pub f_bfree: ::fsblkcnt_t,
+        pub f_files: ::fsblkcnt_t,
+        pub f_ffree: ::fsblkcnt_t,
+        pub f_bavail: ::fsblkcnt_t,
+        pub f_fsid: ::fsid_t,
+
+        pub f_namelen: ::c_long,
+        f_spare: [::c_long; 6],
+    }
+
+    pub struct msghdr {
+        pub msg_name: *mut ::c_void,
+        pub msg_namelen: ::socklen_t,
+        pub msg_iov: *mut ::iovec,
+        pub msg_iovlen: ::size_t,
+        pub msg_control: *mut ::c_void,
+        pub msg_controllen: ::size_t,
+        pub msg_flags: ::c_int,
+    }
+
+    pub struct termios {
+        pub c_iflag: ::tcflag_t,
+        pub c_oflag: ::tcflag_t,
+        pub c_cflag: ::tcflag_t,
+        pub c_lflag: ::tcflag_t,
+        pub c_line: ::cc_t,
+        pub c_cc: [::cc_t; ::NCCS],
+    }
+
+    pub struct flock {
+        pub l_type: ::c_short,
+        pub l_whence: ::c_short,
+        pub l_start: ::off_t,
+        pub l_len: ::off_t,
+        pub l_sysid: ::c_long,
+        pub l_pid: ::pid_t,
+        pad: [::c_long; 4],
+    }
+
+    pub struct sysinfo {
+        pub uptime: ::c_long,
+        pub loads: [::c_ulong; 3],
+        pub totalram: ::c_ulong,
+        pub freeram: ::c_ulong,
+        pub sharedram: ::c_ulong,
+        pub bufferram: ::c_ulong,
+        pub totalswap: ::c_ulong,
+        pub freeswap: ::c_ulong,
+        pub procs: ::c_ushort,
+        pub pad: ::c_ushort,
+        pub totalhigh: ::c_ulong,
+        pub freehigh: ::c_ulong,
+        pub mem_unit: ::c_uint,
+        pub _f: [::c_char; 8],
+    }
+
+    // FIXME this is actually a union
+    pub struct sem_t {
+        #[cfg(target_pointer_width = "32")]
+        __size: [::c_char; 16],
+        #[cfg(target_pointer_width = "64")]
+        __size: [::c_char; 32],
+        __align: [::c_long; 0],
+    }
+}
+
+pub const __SIZEOF_PTHREAD_CONDATTR_T: usize = 4;
+pub const __SIZEOF_PTHREAD_MUTEX_T: usize = 24;
+pub const __SIZEOF_PTHREAD_RWLOCK_T: usize = 32;
+pub const __SIZEOF_PTHREAD_MUTEXATTR_T: usize = 4;
+
+pub const RLIM_INFINITY: ::rlim_t = 0x7fffffff;
+
+pub const SYS_gettid: ::c_long = 4222;   // Valid for O32
+
+#[link(name = "util")]
+extern {
+    pub fn sysctl(name: *mut ::c_int,
+                  namelen: ::c_int,
+                  oldp: *mut ::c_void,
+                  oldlenp: *mut ::size_t,
+                  newp: *mut ::c_void,
+                  newlen: ::size_t)
+                  -> ::c_int;
+    pub fn ioctl(fd: ::c_int, request: ::c_ulong, ...) -> ::c_int;
+    pub fn backtrace(buf: *mut *mut ::c_void,
+                     sz: ::c_int) -> ::c_int;
+    pub fn glob64(pattern: *const ::c_char,
+                  flags: ::c_int,
+                  errfunc: ::dox::Option<extern fn(epath: *const ::c_char,
+                                                   errno: ::c_int)
+                                                   -> ::c_int>,
+                  pglob: *mut glob64_t) -> ::c_int;
+    pub fn globfree64(pglob: *mut glob64_t);
+    pub fn ptrace(request: ::c_uint, ...) -> ::c_long;
+    pub fn pthread_attr_getaffinity_np(attr: *const ::pthread_attr_t,
+                                       cpusetsize: ::size_t,
+                                       cpuset: *mut ::cpu_set_t) -> ::c_int;
+    pub fn pthread_attr_setaffinity_np(attr: *mut ::pthread_attr_t,
+                                       cpusetsize: ::size_t,
+                                       cpuset: *const ::cpu_set_t) -> ::c_int;
+}
diff --git a/src/unix/notbsd/linux/mips64.rs b/src/unix/notbsd/linux/mips/mips64.rs
similarity index 78%
rename from src/unix/notbsd/linux/mips64.rs
rename to src/unix/notbsd/linux/mips/mips64.rs
index 505e82c6..71dfb71d 100644
--- a/src/unix/notbsd/linux/mips64.rs
+++ b/src/unix/notbsd/linux/mips/mips64.rs
@@ -209,46 +209,9 @@ pub const __SIZEOF_PTHREAD_MUTEXATTR_T: usize = 4;
 pub const __SIZEOF_PTHREAD_MUTEX_T: usize = 40;
 pub const __SIZEOF_PTHREAD_RWLOCK_T: usize = 56;
 
-pub const EADDRINUSE: ::c_int = 125;
-pub const EADDRNOTAVAIL: ::c_int = 126;
-pub const ECONNABORTED: ::c_int = 130;
-pub const ECONNREFUSED: ::c_int = 146;
-pub const ECONNRESET: ::c_int = 131;
-pub const EDEADLK: ::c_int = 45;
-pub const ENOSYS: ::c_int = 89;
-pub const ENOTCONN: ::c_int = 134;
-pub const ETIMEDOUT: ::c_int = 145;
-pub const FIOCLEX: ::c_ulong = 0x6601;
-pub const FIONBIO: ::c_ulong = 0x667e;
-pub const MAP_ANON: ::c_int = 0x800;
-pub const O_ACCMODE: ::c_int = 3;
-pub const O_APPEND: ::c_int = 8;
-pub const O_CREAT: ::c_int = 256;
-pub const O_EXCL: ::c_int = 1024;
-pub const O_NONBLOCK: ::c_int = 128;
-pub const POSIX_FADV_DONTNEED: ::c_int = 4;
-pub const POSIX_FADV_NOREUSE: ::c_int = 5;
-pub const PTHREAD_STACK_MIN: ::size_t = 131072;
-pub const NFS_SUPER_MAGIC: ::c_long = 0x00006969;
-pub const RLIM_INFINITY: ::rlim_t = 0xffffffffffffffff;
-pub const SA_ONSTACK: ::c_int = 0x08000000;
-pub const SA_SIGINFO: ::c_int = 0x00000008;
-pub const SIGBUS: ::c_int = 10;
-pub const SIGSYS: ::c_int = 12;
-pub const SIGSTKSZ: ::size_t = 0x2000;
-pub const SIG_SETMASK: ::c_int = 3;
-pub const SOCK_DGRAM: ::c_int = 1;
-pub const SOCK_STREAM: ::c_int = 2;
-pub const SOL_SOCKET: ::c_int = 0xffff;
-pub const SO_BROADCAST: ::c_int = 32;
-pub const SO_ERROR: ::c_int = 4103;
-pub const SO_RCVTIMEO: ::c_int = 4102;
-pub const SO_REUSEADDR: ::c_int = 4;
-pub const SO_SNDTIMEO: ::c_int = 4101;
-pub const SO_REUSEPORT: ::c_int = 0x200;
-pub const SO_SNDBUF: ::c_int = 4097;
-pub const SO_RCVBUF: ::c_int = 4098;
-pub const SO_KEEPALIVE: ::c_int = 8;
+pub const RLIM_INFINITY: ::rlim_t = 0xffff_ffff_ffff_ffff;
+
+pub const SYS_gettid: ::c_long = 5178;   // Valid for n64
 
 #[link(name = "util")]
 extern {
diff --git a/src/unix/notbsd/linux/mips.rs b/src/unix/notbsd/linux/mips/mod.rs
similarity index 63%
rename from src/unix/notbsd/linux/mips.rs
rename to src/unix/notbsd/linux/mips/mod.rs
index ef0496b5..7952e3a4 100644
--- a/src/unix/notbsd/linux/mips.rs
+++ b/src/unix/notbsd/linux/mips/mod.rs
@@ -1,248 +1,3 @@
-pub type c_char = i8;
-pub type c_long = i32;
-pub type c_ulong = u32;
-pub type clock_t = i32;
-pub type time_t = i32;
-pub type suseconds_t = i32;
-pub type wchar_t = i32;
-pub type off_t = i32;
-pub type ino_t = u32;
-pub type blkcnt_t = i32;
-pub type blksize_t = i32;
-pub type nlink_t = u32;
-pub type fsblkcnt_t = ::c_ulong;
-pub type fsfilcnt_t = ::c_ulong;
-pub type rlim_t = c_ulong;
-
-s! {
-    pub struct aiocb {
-        pub aio_fildes: ::c_int,
-        pub aio_lio_opcode: ::c_int,
-        pub aio_reqprio: ::c_int,
-        pub aio_buf: *mut ::c_void,
-        pub aio_nbytes: ::size_t,
-        pub aio_sigevent: ::sigevent,
-        __next_prio: *mut aiocb,
-        __abs_prio: ::c_int,
-        __policy: ::c_int,
-        __error_code: ::c_int,
-        __return_value: ::ssize_t,
-        pub aio_offset: off_t,
-        __unused1: [::c_char; 4],
-        __glibc_reserved: [::c_char; 32]
-    }
-
-    pub struct stat {
-        pub st_dev: ::c_ulong,
-        st_pad1: [::c_long; 3],
-        pub st_ino: ::ino_t,
-        pub st_mode: ::mode_t,
-        pub st_nlink: ::nlink_t,
-        pub st_uid: ::uid_t,
-        pub st_gid: ::gid_t,
-        pub st_rdev: ::c_ulong,
-        pub st_pad2: [::c_long; 2],
-        pub st_size: ::off_t,
-        st_pad3: ::c_long,
-        pub st_atime: ::time_t,
-        pub st_atime_nsec: ::c_long,
-        pub st_mtime: ::time_t,
-        pub st_mtime_nsec: ::c_long,
-        pub st_ctime: ::time_t,
-        pub st_ctime_nsec: ::c_long,
-        pub st_blksize: ::blksize_t,
-        pub st_blocks: ::blkcnt_t,
-        st_pad5: [::c_long; 14],
-    }
-
-    pub struct stat64 {
-        pub st_dev: ::c_ulong,
-        st_pad1: [::c_long; 3],
-        pub st_ino: ::ino64_t,
-        pub st_mode: ::mode_t,
-        pub st_nlink: ::nlink_t,
-        pub st_uid: ::uid_t,
-        pub st_gid: ::gid_t,
-        pub st_rdev: ::c_ulong,
-        st_pad2: [::c_long; 2],
-        pub st_size: ::off64_t,
-        pub st_atime: ::time_t,
-        pub st_atime_nsec: ::c_long,
-        pub st_mtime: ::time_t,
-        pub st_mtime_nsec: ::c_long,
-        pub st_ctime: ::time_t,
-        pub st_ctime_nsec: ::c_long,
-        pub st_blksize: ::blksize_t,
-        st_pad3: ::c_long,
-        pub st_blocks: ::blkcnt64_t,
-        st_pad5: [::c_long; 14],
-    }
-
-    pub struct pthread_attr_t {
-        __size: [u32; 9]
-    }
-
-    pub struct sigaction {
-        pub sa_flags: ::c_int,
-        pub sa_sigaction: ::sighandler_t,
-        pub sa_mask: sigset_t,
-        _restorer: *mut ::c_void,
-        _resv: [::c_int; 1],
-    }
-
-    pub struct stack_t {
-        pub ss_sp: *mut ::c_void,
-        pub ss_size: ::size_t,
-        pub ss_flags: ::c_int,
-    }
-
-    pub struct sigset_t {
-        __val: [::c_ulong; 32],
-    }
-
-    pub struct siginfo_t {
-        pub si_signo: ::c_int,
-        pub si_code: ::c_int,
-        pub si_errno: ::c_int,
-        pub _pad: [::c_int; 29],
-    }
-
-    pub struct glob64_t {
-        pub gl_pathc: ::size_t,
-        pub gl_pathv: *mut *mut ::c_char,
-        pub gl_offs: ::size_t,
-        pub gl_flags: ::c_int,
-
-        __unused1: *mut ::c_void,
-        __unused2: *mut ::c_void,
-        __unused3: *mut ::c_void,
-        __unused4: *mut ::c_void,
-        __unused5: *mut ::c_void,
-    }
-
-    pub struct ipc_perm {
-        pub __key: ::key_t,
-        pub uid: ::uid_t,
-        pub gid: ::gid_t,
-        pub cuid: ::uid_t,
-        pub cgid: ::gid_t,
-        pub mode: ::c_uint,
-        pub __seq: ::c_ushort,
-        __pad1: ::c_ushort,
-        __unused1: ::c_ulong,
-        __unused2: ::c_ulong
-    }
-
-    pub struct shmid_ds {
-        pub shm_perm: ::ipc_perm,
-        pub shm_segsz: ::size_t,
-        pub shm_atime: ::time_t,
-        pub shm_dtime: ::time_t,
-        pub shm_ctime: ::time_t,
-        pub shm_cpid: ::pid_t,
-        pub shm_lpid: ::pid_t,
-        pub shm_nattch: ::shmatt_t,
-        __unused4: ::c_ulong,
-        __unused5: ::c_ulong
-    }
-
-    pub struct msqid_ds {
-        pub msg_perm: ::ipc_perm,
-        #[cfg(target_endian = "big")]
-        __glibc_reserved1: ::c_ulong,
-        pub msg_stime: ::time_t,
-        #[cfg(target_endian = "little")]
-        __glibc_reserved1: ::c_ulong,
-        #[cfg(target_endian = "big")]
-        __glibc_reserved2: ::c_ulong,
-        pub msg_rtime: ::time_t,
-        #[cfg(target_endian = "little")]
-        __glibc_reserved2: ::c_ulong,
-        #[cfg(target_endian = "big")]
-        __glibc_reserved3: ::c_ulong,
-        pub msg_ctime: ::time_t,
-        #[cfg(target_endian = "little")]
-        __glibc_reserved3: ::c_ulong,
-        __msg_cbytes: ::c_ulong,
-        pub msg_qnum: ::msgqnum_t,
-        pub msg_qbytes: ::msglen_t,
-        pub msg_lspid: ::pid_t,
-        pub msg_lrpid: ::pid_t,
-        __glibc_reserved4: ::c_ulong,
-        __glibc_reserved5: ::c_ulong,
-    }
-
-    pub struct statfs {
-        pub f_type: ::c_long,
-        pub f_bsize: ::c_long,
-        pub f_frsize: ::c_long,
-        pub f_blocks: ::fsblkcnt_t,
-        pub f_bfree: ::fsblkcnt_t,
-        pub f_files: ::fsblkcnt_t,
-        pub f_ffree: ::fsblkcnt_t,
-        pub f_bavail: ::fsblkcnt_t,
-        pub f_fsid: ::fsid_t,
-
-        pub f_namelen: ::c_long,
-        f_spare: [::c_long; 6],
-    }
-
-    pub struct msghdr {
-        pub msg_name: *mut ::c_void,
-        pub msg_namelen: ::socklen_t,
-        pub msg_iov: *mut ::iovec,
-        pub msg_iovlen: ::size_t,
-        pub msg_control: *mut ::c_void,
-        pub msg_controllen: ::size_t,
-        pub msg_flags: ::c_int,
-    }
-
-    pub struct termios {
-        pub c_iflag: ::tcflag_t,
-        pub c_oflag: ::tcflag_t,
-        pub c_cflag: ::tcflag_t,
-        pub c_lflag: ::tcflag_t,
-        pub c_line: ::cc_t,
-        pub c_cc: [::cc_t; ::NCCS],
-    }
-
-    pub struct flock {
-        pub l_type: ::c_short,
-        pub l_whence: ::c_short,
-        pub l_start: ::off_t,
-        pub l_len: ::off_t,
-        pub l_sysid: ::c_long,
-        pub l_pid: ::pid_t,
-        pad: [::c_long; 4],
-    }
-
-    pub struct sysinfo {
-        pub uptime: ::c_long,
-        pub loads: [::c_ulong; 3],
-        pub totalram: ::c_ulong,
-        pub freeram: ::c_ulong,
-        pub sharedram: ::c_ulong,
-        pub bufferram: ::c_ulong,
-        pub totalswap: ::c_ulong,
-        pub freeswap: ::c_ulong,
-        pub procs: ::c_ushort,
-        pub pad: ::c_ushort,
-        pub totalhigh: ::c_ulong,
-        pub freehigh: ::c_ulong,
-        pub mem_unit: ::c_uint,
-        pub _f: [::c_char; 8],
-    }
-
-    // FIXME this is actually a union
-    pub struct sem_t {
-        #[cfg(target_pointer_width = "32")]
-        __size: [::c_char; 16],
-        #[cfg(target_pointer_width = "64")]
-        __size: [::c_char; 32],
-        __align: [::c_long; 0],
-    }
-}
-
 pub const BUFSIZ: ::c_uint = 8192;
 pub const TMP_MAX: ::c_uint = 238328;
 pub const FOPEN_MAX: ::c_uint = 16;
@@ -263,7 +18,6 @@ pub const RLIMIT_RSS: ::c_int = 7;
 pub const RLIMIT_NPROC: ::c_int = 8;
 pub const RLIMIT_MEMLOCK: ::c_int = 9;
 pub const RLIMIT_NLIMITS: ::c_int = 16;
-pub const RLIM_INFINITY: ::rlim_t = 0x7fffffff;
 
 pub const O_APPEND: ::c_int = 8;
 pub const O_CREAT: ::c_int = 256;
@@ -423,11 +177,6 @@ pub const SO_RCVTIMEO: ::c_int = 4102;
 pub const SO_SNDTIMEO: ::c_int = 4101;
 pub const SO_ACCEPTCONN: ::c_int = 4105;
 
-pub const __SIZEOF_PTHREAD_CONDATTR_T: usize = 4;
-pub const __SIZEOF_PTHREAD_MUTEX_T: usize = 24;
-pub const __SIZEOF_PTHREAD_RWLOCK_T: usize = 32;
-pub const __SIZEOF_PTHREAD_MUTEXATTR_T: usize = 4;
-
 pub const FIOCLEX: ::c_ulong = 0x6601;
 pub const FIONBIO: ::c_ulong = 0x667e;
 
@@ -593,8 +342,6 @@ pub const LINUX_REBOOT_CMD_RESTART2: ::c_int = 0xA1B2C3D4;
 pub const LINUX_REBOOT_CMD_SW_SUSPEND: ::c_int = 0xD000FCE2;
 pub const LINUX_REBOOT_CMD_KEXEC: ::c_int = 0x45584543;
 
-pub const SYS_gettid: ::c_long = 4222;   // Valid for O32
-
 pub const MCL_CURRENT: ::c_int = 0x0001;
 pub const MCL_FUTURE: ::c_int = 0x0002;
 
@@ -640,30 +387,14 @@ pub const ICANON: ::tcflag_t = 0x00000002;
 pub const PENDIN: ::tcflag_t = 0x00004000;
 pub const NOFLSH: ::tcflag_t = 0x00000080;
 
-#[link(name = "util")]
-extern {
-    pub fn sysctl(name: *mut ::c_int,
-                  namelen: ::c_int,
-                  oldp: *mut ::c_void,
-                  oldlenp: *mut ::size_t,
-                  newp: *mut ::c_void,
-                  newlen: ::size_t)
-                  -> ::c_int;
-    pub fn ioctl(fd: ::c_int, request: ::c_ulong, ...) -> ::c_int;
-    pub fn backtrace(buf: *mut *mut ::c_void,
-                     sz: ::c_int) -> ::c_int;
-    pub fn glob64(pattern: *const ::c_char,
-                  flags: ::c_int,
-                  errfunc: ::dox::Option<extern fn(epath: *const ::c_char,
-                                                   errno: ::c_int)
-                                                   -> ::c_int>,
-                  pglob: *mut glob64_t) -> ::c_int;
-    pub fn globfree64(pglob: *mut glob64_t);
-    pub fn ptrace(request: ::c_uint, ...) -> ::c_long;
-    pub fn pthread_attr_getaffinity_np(attr: *const ::pthread_attr_t,
-                                       cpusetsize: ::size_t,
-                                       cpuset: *mut ::cpu_set_t) -> ::c_int;
-    pub fn pthread_attr_setaffinity_np(attr: *mut ::pthread_attr_t,
-                                       cpusetsize: ::size_t,
-                                       cpuset: *const ::cpu_set_t) -> ::c_int;
+cfg_if! {
+    if #[cfg(target_arch = "mips")] {
+        mod mips32;
+        pub use self::mips32::*;
+    } else if #[cfg(target_arch = "mips64")] {
+        mod mips64;
+        pub use self::mips64::*;
+    } else {
+        // Unknown target_arch
+    }
 }
diff --git a/src/unix/notbsd/linux/mod.rs b/src/unix/notbsd/linux/mod.rs
index 6da20d0f..08efed2e 100644
--- a/src/unix/notbsd/linux/mod.rs
+++ b/src/unix/notbsd/linux/mod.rs
@@ -756,15 +756,13 @@ cfg_if! {
                  target_os = "emscripten"))] {
         mod musl;
         pub use self::musl::*;
-    } else if #[cfg(any(target_arch = "mips"))] {
+    } else if #[cfg(any(target_arch = "mips",
+                        target_arch = "mips64"))] {
         mod mips;
         pub use self::mips::*;
     } else if #[cfg(any(target_arch = "s390x"))] {
         mod s390x;
         pub use self::s390x::*;
-    } else if #[cfg(any(target_arch = "mips64"))] {
-        mod mips64;
-        pub use self::mips64::*;
     } else {
         mod other;
         pub use self::other::*;
-- 
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