diff --git a/lib/std/os/bits/linux.zig b/lib/std/os/bits/linux.zig
index e255d0e362..86d89016f3 100644
--- a/lib/std/os/bits/linux.zig
+++ b/lib/std/os/bits/linux.zig
@@ -21,6 +21,7 @@ pub usingnamespace switch (builtin.arch) {
     .riscv64 => @import("linux/riscv64.zig"),
     .sparcv9 => @import("linux/sparc64.zig"),
     .mips, .mipsel => @import("linux/mips.zig"),
+    .powerpc => @import("linux/powerpc.zig"),
     .powerpc64, .powerpc64le => @import("linux/powerpc64.zig"),
     else => struct {},
 };
diff --git a/lib/std/os/bits/linux/powerpc.zig b/lib/std/os/bits/linux/powerpc.zig
new file mode 100644
index 0000000000..bbb281f638
--- /dev/null
+++ b/lib/std/os/bits/linux/powerpc.zig
@@ -0,0 +1,635 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2015-2021 Zig Contributors
+// This file is part of [zig](https://ziglang.org/), which is MIT licensed.
+// The MIT license requires this copyright notice to be included in all copies
+// and substantial portions of the software.
+
+const std = @import("../../../std.zig");
+const linux = std.os.linux;
+const socklen_t = linux.socklen_t;
+const iovec = linux.iovec;
+const iovec_const = linux.iovec_const;
+const uid_t = linux.uid_t;
+const gid_t = linux.gid_t;
+const pid_t = linux.pid_t;
+const stack_t = linux.stack_t;
+const sigset_t = linux.sigset_t;
+pub const SYS = extern enum(usize) {
+    restart_syscall = 0,
+    exit = 1,
+    fork = 2,
+    read = 3,
+    write = 4,
+    open = 5,
+    close = 6,
+    waitpid = 7,
+    creat = 8,
+    link = 9,
+    unlink = 10,
+    execve = 11,
+    chdir = 12,
+    time = 13,
+    mknod = 14,
+    chmod = 15,
+    lchown = 16,
+    @"break" = 17,
+    oldstat = 18,
+    lseek = 19,
+    getpid = 20,
+    mount = 21,
+    umount = 22,
+    setuid = 23,
+    getuid = 24,
+    stime = 25,
+    ptrace = 26,
+    alarm = 27,
+    oldfstat = 28,
+    pause = 29,
+    utime = 30,
+    stty = 31,
+    gtty = 32,
+    access = 33,
+    nice = 34,
+    ftime = 35,
+    sync = 36,
+    kill = 37,
+    rename = 38,
+    mkdir = 39,
+    rmdir = 40,
+    dup = 41,
+    pipe = 42,
+    times = 43,
+    prof = 44,
+    brk = 45,
+    setgid = 46,
+    getgid = 47,
+    signal = 48,
+    geteuid = 49,
+    getegid = 50,
+    acct = 51,
+    umount2 = 52,
+    lock = 53,
+    ioctl = 54,
+    fcntl = 55,
+    mpx = 56,
+    setpgid = 57,
+    ulimit = 58,
+    oldolduname = 59,
+    umask = 60,
+    chroot = 61,
+    ustat = 62,
+    dup2 = 63,
+    getppid = 64,
+    getpgrp = 65,
+    setsid = 66,
+    sigaction = 67,
+    sgetmask = 68,
+    ssetmask = 69,
+    setreuid = 70,
+    setregid = 71,
+    sigsuspend = 72,
+    sigpending = 73,
+    sethostname = 74,
+    setrlimit = 75,
+    getrlimit = 76,
+    getrusage = 77,
+    gettimeofday_time32 = 78,
+    settimeofday_time32 = 79,
+    getgroups = 80,
+    setgroups = 81,
+    select = 82,
+    symlink = 83,
+    oldlstat = 84,
+    readlink = 85,
+    uselib = 86,
+    swapon = 87,
+    reboot = 88,
+    readdir = 89,
+    mmap = 90,
+    munmap = 91,
+    truncate = 92,
+    ftruncate = 93,
+    fchmod = 94,
+    fchown = 95,
+    getpriority = 96,
+    setpriority = 97,
+    profil = 98,
+    statfs = 99,
+    fstatfs = 100,
+    ioperm = 101,
+    socketcall = 102,
+    syslog = 103,
+    setitimer = 104,
+    getitimer = 105,
+    stat = 106,
+    lstat = 107,
+    fstat = 108,
+    olduname = 109,
+    iopl = 110,
+    vhangup = 111,
+    idle = 112,
+    vm86 = 113,
+    wait4 = 114,
+    swapoff = 115,
+    sysinfo = 116,
+    ipc = 117,
+    fsync = 118,
+    sigreturn = 119,
+    clone = 120,
+    setdomainname = 121,
+    uname = 122,
+    modify_ldt = 123,
+    adjtimex = 124,
+    mprotect = 125,
+    sigprocmask = 126,
+    create_module = 127,
+    init_module = 128,
+    delete_module = 129,
+    get_kernel_syms = 130,
+    quotactl = 131,
+    getpgid = 132,
+    fchdir = 133,
+    bdflush = 134,
+    sysfs = 135,
+    personality = 136,
+    afs_syscall = 137,
+    setfsuid = 138,
+    setfsgid = 139,
+    _llseek = 140,
+    getdents = 141,
+    _newselect = 142,
+    flock = 143,
+    msync = 144,
+    readv = 145,
+    writev = 146,
+    getsid = 147,
+    fdatasync = 148,
+    _sysctl = 149,
+    mlock = 150,
+    munlock = 151,
+    mlockall = 152,
+    munlockall = 153,
+    sched_setparam = 154,
+    sched_getparam = 155,
+    sched_setscheduler = 156,
+    sched_getscheduler = 157,
+    sched_yield = 158,
+    sched_get_priority_max = 159,
+    sched_get_priority_min = 160,
+    sched_rr_get_interval = 161,
+    nanosleep = 162,
+    mremap = 163,
+    setresuid = 164,
+    getresuid = 165,
+    query_module = 166,
+    poll = 167,
+    nfsservctl = 168,
+    setresgid = 169,
+    getresgid = 170,
+    prctl = 171,
+    rt_sigreturn = 172,
+    rt_sigaction = 173,
+    rt_sigprocmask = 174,
+    rt_sigpending = 175,
+    rt_sigtimedwait = 176,
+    rt_sigqueueinfo = 177,
+    rt_sigsuspend = 178,
+    pread64 = 179,
+    pwrite64 = 180,
+    chown = 181,
+    getcwd = 182,
+    capget = 183,
+    capset = 184,
+    sigaltstack = 185,
+    sendfile = 186,
+    getpmsg = 187,
+    putpmsg = 188,
+    vfork = 189,
+    ugetrlimit = 190,
+    readahead = 191,
+    mmap2 = 192,
+    truncate64 = 193,
+    ftruncate64 = 194,
+    stat64 = 195,
+    lstat64 = 196,
+    fstat64 = 197,
+    pciconfig_read = 198,
+    pciconfig_write = 199,
+    pciconfig_iobase = 200,
+    multiplexer = 201,
+    getdents64 = 202,
+    pivot_root = 203,
+    fcntl64 = 204,
+    madvise = 205,
+    mincore = 206,
+    gettid = 207,
+    tkill = 208,
+    setxattr = 209,
+    lsetxattr = 210,
+    fsetxattr = 211,
+    getxattr = 212,
+    lgetxattr = 213,
+    fgetxattr = 214,
+    listxattr = 215,
+    llistxattr = 216,
+    flistxattr = 217,
+    removexattr = 218,
+    lremovexattr = 219,
+    fremovexattr = 220,
+    futex = 221,
+    sched_setaffinity = 222,
+    sched_getaffinity = 223,
+    tuxcall = 225,
+    sendfile64 = 226,
+    io_setup = 227,
+    io_destroy = 228,
+    io_getevents = 229,
+    io_submit = 230,
+    io_cancel = 231,
+    set_tid_address = 232,
+    fadvise64 = 233,
+    exit_group = 234,
+    lookup_dcookie = 235,
+    epoll_create = 236,
+    epoll_ctl = 237,
+    epoll_wait = 238,
+    remap_file_pages = 239,
+    timer_create = 240,
+    timer_settime32 = 241,
+    timer_gettime32 = 242,
+    timer_getoverrun = 243,
+    timer_delete = 244,
+    clock_settime32 = 245,
+    clock_gettime32 = 246,
+    clock_getres_time32 = 247,
+    clock_nanosleep_time32 = 248,
+    swapcontext = 249,
+    tgkill = 250,
+    utimes = 251,
+    statfs64 = 252,
+    fstatfs64 = 253,
+    fadvise64_64 = 254,
+    rtas = 255,
+    sys_debug_setcontext = 256,
+    migrate_pages = 258,
+    mbind = 259,
+    get_mempolicy = 260,
+    set_mempolicy = 261,
+    mq_open = 262,
+    mq_unlink = 263,
+    mq_timedsend = 264,
+    mq_timedreceive = 265,
+    mq_notify = 266,
+    mq_getsetattr = 267,
+    kexec_load = 268,
+    add_key = 269,
+    request_key = 270,
+    keyctl = 271,
+    waitid = 272,
+    ioprio_set = 273,
+    ioprio_get = 274,
+    inotify_init = 275,
+    inotify_add_watch = 276,
+    inotify_rm_watch = 277,
+    spu_run = 278,
+    spu_create = 279,
+    pselect6 = 280,
+    ppoll = 281,
+    unshare = 282,
+    splice = 283,
+    tee = 284,
+    vmsplice = 285,
+    openat = 286,
+    mkdirat = 287,
+    mknodat = 288,
+    fchownat = 289,
+    futimesat = 290,
+    fstatat64 = 291,
+    unlinkat = 292,
+    renameat = 293,
+    linkat = 294,
+    symlinkat = 295,
+    readlinkat = 296,
+    fchmodat = 297,
+    faccessat = 298,
+    get_robust_list = 299,
+    set_robust_list = 300,
+    move_pages = 301,
+    getcpu = 302,
+    epoll_pwait = 303,
+    utimensat = 304,
+    signalfd = 305,
+    timerfd_create = 306,
+    eventfd = 307,
+    sync_file_range2 = 308,
+    fallocate = 309,
+    subpage_prot = 310,
+    timerfd_settime32 = 311,
+    timerfd_gettime32 = 312,
+    signalfd4 = 313,
+    eventfd2 = 314,
+    epoll_create1 = 315,
+    dup3 = 316,
+    pipe2 = 317,
+    inotify_init1 = 318,
+    perf_event_open = 319,
+    preadv = 320,
+    pwritev = 321,
+    rt_tgsigqueueinfo = 322,
+    fanotify_init = 323,
+    fanotify_mark = 324,
+    prlimit64 = 325,
+    socket = 326,
+    bind = 327,
+    connect = 328,
+    listen = 329,
+    accept = 330,
+    getsockname = 331,
+    getpeername = 332,
+    socketpair = 333,
+    send = 334,
+    sendto = 335,
+    recv = 336,
+    recvfrom = 337,
+    shutdown = 338,
+    setsockopt = 339,
+    getsockopt = 340,
+    sendmsg = 341,
+    recvmsg = 342,
+    recvmmsg = 343,
+    accept4 = 344,
+    name_to_handle_at = 345,
+    open_by_handle_at = 346,
+    clock_adjtime = 347,
+    syncfs = 348,
+    sendmmsg = 349,
+    setns = 350,
+    process_vm_readv = 351,
+    process_vm_writev = 352,
+    finit_module = 353,
+    kcmp = 354,
+    sched_setattr = 355,
+    sched_getattr = 356,
+    renameat2 = 357,
+    seccomp = 358,
+    getrandom = 359,
+    memfd_create = 360,
+    bpf = 361,
+    execveat = 362,
+    switch_endian = 363,
+    userfaultfd = 364,
+    membarrier = 365,
+    mlock2 = 378,
+    copy_file_range = 379,
+    preadv2 = 380,
+    pwritev2 = 381,
+    kexec_file_load = 382,
+    statx = 383,
+    pkey_alloc = 384,
+    pkey_free = 385,
+    pkey_mprotect = 386,
+    rseq = 387,
+    io_pgetevents = 388,
+    semget = 393,
+    semctl = 394,
+    shmget = 395,
+    shmctl = 396,
+    shmat = 397,
+    shmdt = 398,
+    msgget = 399,
+    msgsnd = 400,
+    msgrcv = 401,
+    msgctl = 402,
+    clock_gettime64 = 403,
+    clock_settime64 = 404,
+    clock_adjtime64 = 405,
+    clock_getres_time64 = 406,
+    clock_nanosleep_time64 = 407,
+    timer_gettime64 = 408,
+    timer_settime64 = 409,
+    timerfd_gettime64 = 410,
+    timerfd_settime64 = 411,
+    utimensat_time64 = 412,
+    pselect6_time64 = 413,
+    ppoll_time64 = 414,
+    io_pgetevents_time64 = 416,
+    recvmmsg_time64 = 417,
+    mq_timedsend_time64 = 418,
+    mq_timedreceive_time64 = 419,
+    semtimedop_time64 = 420,
+    rt_sigtimedwait_time64 = 421,
+    futex_time64 = 422,
+    sched_rr_get_interval_time64 = 423,
+    pidfd_send_signal = 424,
+    io_uring_setup = 425,
+    io_uring_enter = 426,
+    io_uring_register = 427,
+    open_tree = 428,
+    move_mount = 429,
+    fsopen = 430,
+    fsconfig = 431,
+    fsmount = 432,
+    fspick = 433,
+    pidfd_open = 434,
+    clone3 = 435,
+    close_range = 436,
+    openat2 = 437,
+    pidfd_getfd = 438,
+    faccessat2 = 439,
+    process_madvise = 440,
+};
+
+pub const O_CREAT = 0o100;
+pub const O_EXCL = 0o200;
+pub const O_NOCTTY = 0o400;
+pub const O_TRUNC = 0o1000;
+pub const O_APPEND = 0o2000;
+pub const O_NONBLOCK = 0o4000;
+pub const O_DSYNC = 0o10000;
+pub const O_SYNC = 0o4010000;
+pub const O_RSYNC = 0o4010000;
+pub const O_DIRECTORY = 0o40000;
+pub const O_NOFOLLOW = 0o100000;
+pub const O_CLOEXEC = 0o2000000;
+
+pub const O_ASYNC = 0o20000;
+pub const O_DIRECT = 0o400000;
+pub const O_LARGEFILE = 0o200000;
+pub const O_NOATIME = 0o1000000;
+pub const O_PATH = 0o10000000;
+pub const O_TMPFILE = 0o20040000;
+pub const O_NDELAY = O_NONBLOCK;
+
+pub const F_DUPFD = 0;
+pub const F_GETFD = 1;
+pub const F_SETFD = 2;
+pub const F_GETFL = 3;
+pub const F_SETFL = 4;
+
+pub const F_SETOWN = 8;
+pub const F_GETOWN = 9;
+pub const F_SETSIG = 10;
+pub const F_GETSIG = 11;
+
+pub const F_GETLK = 12;
+pub const F_SETLK = 13;
+pub const F_SETLKW = 14;
+
+pub const F_SETOWN_EX = 15;
+pub const F_GETOWN_EX = 16;
+
+pub const F_GETOWNER_UIDS = 17;
+
+pub const F_RDLCK = 0;
+pub const F_WRLCK = 1;
+pub const F_UNLCK = 2;
+
+pub const LOCK_SH = 1;
+pub const LOCK_EX = 2;
+pub const LOCK_UN = 8;
+pub const LOCK_NB = 4;
+
+/// stack-like segment
+pub const MAP_GROWSDOWN = 0x0100;
+
+/// ETXTBSY
+pub const MAP_DENYWRITE = 0x0800;
+
+/// mark it as an executable
+pub const MAP_EXECUTABLE = 0x1000;
+
+/// pages are locked
+pub const MAP_LOCKED = 0x0080;
+
+/// don't check for reservations
+pub const MAP_NORESERVE = 0x0040;
+
+pub const VDSO_CGT_SYM = "__kernel_clock_gettime";
+pub const VDSO_CGT_VER = "LINUX_2.6.15";
+
+pub const Flock = extern struct {
+    l_type: i16,
+    l_whence: i16,
+    l_start: off_t,
+    l_len: off_t,
+    l_pid: pid_t,
+};
+
+pub const msghdr = extern struct {
+    msg_name: ?*sockaddr,
+    msg_namelen: socklen_t,
+    msg_iov: [*]iovec,
+    msg_iovlen: usize,
+    msg_control: ?*c_void,
+    msg_controllen: socklen_t,
+    msg_flags: i32,
+};
+
+pub const msghdr_const = extern struct {
+    msg_name: ?*const sockaddr,
+    msg_namelen: socklen_t,
+    msg_iov: [*]iovec_const,
+    msg_iovlen: usize,
+    msg_control: ?*c_void,
+    msg_controllen: socklen_t,
+    msg_flags: i32,
+};
+
+pub const blksize_t = i32;
+pub const nlink_t = u32;
+pub const time_t = i64;
+pub const mode_t = u32;
+pub const off_t = i64;
+pub const ino_t = u64;
+pub const dev_t = u64;
+pub const blkcnt_t = i64;
+
+// The `stat` definition used by the Linux kernel.
+pub const kernel_stat = extern struct {
+    dev: dev_t,
+    ino: ino_t,
+    mode: mode_t,
+    nlink: nlink_t,
+    uid: uid_t,
+    gid: gid_t,
+    rdev: dev_t,
+    __rdev_padding: i16,
+    size: off_t,
+    blksize: blksize_t,
+    blocks: blkcnt_t,
+    __atim32: timespec32,
+    __mtim32: timespec32,
+    __ctim32: timespec32,
+    __unused: [2]u32,
+    atim: timespec,
+    mtim: timespec,
+    ctim: timespec,
+
+    const timespec32 = extern struct {
+        tv_sec: i32,
+        tv_nsec: i32,
+    };
+
+    pub fn atime(self: @This()) timespec {
+        return self.atim;
+    }
+
+    pub fn mtime(self: @This()) timespec {
+        return self.mtim;
+    }
+
+    pub fn ctime(self: @This()) timespec {
+        return self.ctim;
+    }
+};
+
+// The `stat64` definition used by the libc.
+pub const libc_stat = kernel_stat;
+
+pub const timespec = extern struct {
+    tv_sec: time_t,
+    tv_nsec: isize,
+};
+
+pub const timeval = extern struct {
+    tv_sec: time_t,
+    tv_usec: isize,
+};
+
+pub const timezone = extern struct {
+    tz_minuteswest: i32,
+    tz_dsttime: i32,
+};
+
+pub const greg_t = u32;
+pub const gregset_t = [48]greg_t;
+pub const fpregset_t = [33]f64;
+
+pub const vrregset = extern struct {
+    vrregs: [32][4]u32,
+    vrsave: u32,
+    _pad: [2]u32,
+    vscr: u32,
+};
+pub const vrregset_t = vrregset;
+
+pub const mcontext_t = extern struct {
+    gp_regs: gregset_t,
+    fp_regs: fpregset_t,
+    v_regs: vrregset_t align(16),
+};
+
+pub const ucontext_t = extern struct {
+    flags: u32,
+    link: *ucontext_t,
+    stack: stack_t,
+    pad: [7]i32,
+    regs: *mcontext_t,
+    sigmask: sigset_t,
+    pad2: [3]i32,
+    mcontext: mcontext_t,
+};
+
+pub const Elf_Symndx = u32;
+
+pub const MMAP2_UNIT = 4096;
diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
index 900e3f2871..ed08438425 100644
--- a/lib/std/os/linux.zig
+++ b/lib/std/os/linux.zig
@@ -26,6 +26,7 @@ pub usingnamespace switch (builtin.arch) {
     .riscv64 => @import("linux/riscv64.zig"),
     .sparcv9 => @import("linux/sparc64.zig"),
     .mips, .mipsel => @import("linux/mips.zig"),
+    .powerpc => @import("linux/powerpc.zig"),
     .powerpc64, .powerpc64le => @import("linux/powerpc64.zig"),
     else => struct {},
 };
diff --git a/lib/std/os/linux/powerpc.zig b/lib/std/os/linux/powerpc.zig
new file mode 100644
index 0000000000..567ad2bc1f
--- /dev/null
+++ b/lib/std/os/linux/powerpc.zig
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2015-2021 Zig Contributors
+// This file is part of [zig](https://ziglang.org/), which is MIT licensed.
+// The MIT license requires this copyright notice to be included in all copies
+// and substantial portions of the software.
+
+usingnamespace @import("../bits.zig");
+
+pub fn syscall0(number: SYS) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number))
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+pub fn syscall1(number: SYS, arg1: usize) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number)),
+          [arg1] "{r3}" (arg1)
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number)),
+          [arg1] "{r3}" (arg1),
+          [arg2] "{r4}" (arg2)
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number)),
+          [arg1] "{r3}" (arg1),
+          [arg2] "{r4}" (arg2),
+          [arg3] "{r5}" (arg3)
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number)),
+          [arg1] "{r3}" (arg1),
+          [arg2] "{r4}" (arg2),
+          [arg3] "{r5}" (arg3),
+          [arg4] "{r6}" (arg4)
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize, arg5: usize) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number)),
+          [arg1] "{r3}" (arg1),
+          [arg2] "{r4}" (arg2),
+          [arg3] "{r5}" (arg3),
+          [arg4] "{r6}" (arg4),
+          [arg5] "{r7}" (arg5)
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+pub fn syscall6(
+    number: SYS,
+    arg1: usize,
+    arg2: usize,
+    arg3: usize,
+    arg4: usize,
+    arg5: usize,
+    arg6: usize,
+) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number)),
+          [arg1] "{r3}" (arg1),
+          [arg2] "{r4}" (arg2),
+          [arg3] "{r5}" (arg3),
+          [arg4] "{r6}" (arg4),
+          [arg5] "{r7}" (arg5),
+          [arg6] "{r8}" (arg6)
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+/// This matches the libc clone function.
+pub extern fn clone(func: fn (arg: usize) callconv(.C) u8, stack: usize, flags: usize, arg: usize, ptid: *i32, tls: usize, ctid: *i32) usize;
+
+pub const restore = restore_rt;
+
+pub fn restore_rt() callconv(.Naked) void {
+    return asm volatile ("sc"
+        :
+        : [number] "{r0}" (@enumToInt(SYS.rt_sigreturn))
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}