Add initial freebsd stdlib functionality

Trivial program now compiles with now warnings.

src/target.cpp

@@ -738,6 +738,7 @@ uint32_t target_c_type_size_in_bits(const ZigTarget *target, CIntType id) {
         case OsLinux:
         case OsMacOSX:
         case OsZen:
+        case OsFreeBSD:
         case OsOpenBSD:
             switch (id) {
                 case CIntTypeShort:
@@ -774,7 +775,6 @@ uint32_t target_c_type_size_in_bits(const ZigTarget *target, CIntType id) {
         case OsAnanas:
         case OsCloudABI:
         case OsDragonFly:
-        case OsFreeBSD:
         case OsIOS:
         case OsKFreeBSD:
         case OsLv2:

std/os/freebsd.zig

@@ -0,0 +1,733 @@
+const assert = @import("../debug.zig").assert;
+const builtin = @import("builtin");
+const arch = switch (builtin.arch) {
+    builtin.Arch.x86_64 => @import("freebsd_x86_64.zig"),
+    builtin.Arch.i386 => @import("freebsd_i386.zig"),
+    else => @compileError("unsupported arch"),
+};
+pub use @import("freebsd_errno.zig");
+
+pub const PATH_MAX = 1024;
+
+pub const STDIN_FILENO = 0;
+pub const STDOUT_FILENO = 1;
+pub const STDERR_FILENO = 2;
+
+pub const PROT_NONE      = 0;
+pub const PROT_READ      = 1;
+pub const PROT_WRITE     = 2;
+pub const PROT_EXEC      = 4;
+
+pub const MAP_FAILED     = @maxValue(usize);
+pub const MAP_SHARED     = 0x0001;
+pub const MAP_PRIVATE    = 0x0002;
+pub const MAP_FIXED      = 0x0010;
+pub const MAP_STACK      = 0x0400;
+pub const MAP_NOSYNC     = 0x0800;
+pub const MAP_ANON       = 0x1000;
+pub const MAP_ANONYMOUS  = MAP_ANON;
+pub const MAP_FILE       = 0;
+
+pub const MAP_GUARD      = 0x00002000;
+pub const MAP_EXCL       = 0x00004000;
+pub const MAP_NOCORE     = 0x00020000;
+pub const MAP_PREFAULT_READ = 0x00040000;
+pub const MAP_32BIT      = 0x00080000;
+
+pub const WNOHANG    = 1;
+pub const WUNTRACED  = 2;
+pub const WSTOPPED   = WUNTRACED;
+pub const WCONTINUED = 4;
+pub const WNOWAIT    = 8;
+pub const WEXITED    = 16;
+pub const WTRAPPED   = 32;
+
+pub const SA_ONSTACK   = 0x0001;
+pub const SA_RESTART   = 0x0002;
+pub const SA_RESETHAND = 0x0004;
+pub const SA_NOCLDSTOP = 0x0008;
+pub const SA_NODEFER   = 0x0010;
+pub const SA_NOCLDWAIT = 0x0020;
+pub const SA_SIGINFO   = 0x0040;
+
+pub const SIGHUP    = 1;
+pub const SIGINT    = 2;
+pub const SIGQUIT   = 3;
+pub const SIGILL    = 4;
+pub const SIGTRAP   = 5;
+pub const SIGABRT   = 6;
+pub const SIGIOT    = SIGABRT;
+pub const SIGEMT    = 7;
+pub const SIGFPE    = 8;
+pub const SIGKILL   = 9;
+pub const SIGBUS    = 10;
+pub const SIGSEGV   = 11;
+pub const SIGSYS    = 12;
+pub const SIGPIPE   = 13;
+pub const SIGALRM   = 14;
+pub const SIGTERM   = 15;
+pub const SIGURG    = 16;
+pub const SIGSTOP   = 17;
+pub const SIGTSTP   = 18;
+pub const SIGCONT   = 19;
+pub const SIGCHLD   = 20;
+pub const SIGTTIN   = 21;
+pub const SIGTTOU   = 22;
+pub const SIGIO     = 23;
+pub const SIGXCPU   = 24;
+pub const SIGXFSZ   = 25;
+pub const SIGVTALRM = 26;
+pub const SIGPROF   = 27;
+pub const SIGWINCH  = 28;
+pub const SIGINFO   = 29;
+pub const SIGUSR1   = 30;
+pub const SIGUSR2   = 31;
+pub const SIGTHR    = 32;
+pub const SIGLWP    = SIGTHR;
+pub const SIGLIBRT  = 33;
+
+pub const SIGRTMIN  = 65;
+pub const SIGRTMAX  = 126;
+
+pub const O_RDONLY = 0o0;
+pub const O_WRONLY = 0o1;
+pub const O_RDWR   = 0o2;
+pub const O_ACCMODE = 0o3;
+
+pub const O_CREAT = arch.O_CREAT;
+pub const O_EXCL = arch.O_EXCL;
+pub const O_NOCTTY = arch.O_NOCTTY;
+pub const O_TRUNC = arch.O_TRUNC;
+pub const O_APPEND = arch.O_APPEND;
+pub const O_NONBLOCK = arch.O_NONBLOCK;
+pub const O_DSYNC = arch.O_DSYNC;
+pub const O_SYNC = arch.O_SYNC;
+pub const O_RSYNC = arch.O_RSYNC;
+pub const O_DIRECTORY = arch.O_DIRECTORY;
+pub const O_NOFOLLOW = arch.O_NOFOLLOW;
+pub const O_CLOEXEC = arch.O_CLOEXEC;
+
+pub const O_ASYNC = arch.O_ASYNC;
+pub const O_DIRECT = arch.O_DIRECT;
+pub const O_LARGEFILE = arch.O_LARGEFILE;
+pub const O_NOATIME = arch.O_NOATIME;
+pub const O_PATH = arch.O_PATH;
+pub const O_TMPFILE = arch.O_TMPFILE;
+pub const O_NDELAY = arch.O_NDELAY;
+
+pub const SEEK_SET = 0;
+pub const SEEK_CUR = 1;
+pub const SEEK_END = 2;
+
+pub const SIG_BLOCK   = 1;
+pub const SIG_UNBLOCK = 2;
+pub const SIG_SETMASK = 3;
+
+pub const SOCK_STREAM = 1;
+pub const SOCK_DGRAM = 2;
+pub const SOCK_RAW = 3;
+pub const SOCK_RDM = 4;
+pub const SOCK_SEQPACKET = 5;
+
+pub const SOCK_CLOEXEC = 0x10000000;
+pub const SOCK_NONBLOCK = 0x20000000;
+
+// TODO: From here
+pub const PROTO_ip = 0o000;
+pub const PROTO_icmp = 0o001;
+pub const PROTO_igmp = 0o002;
+pub const PROTO_ggp = 0o003;
+pub const PROTO_ipencap = 0o004;
+pub const PROTO_st = 0o005;
+pub const PROTO_tcp = 0o006;
+pub const PROTO_egp = 0o010;
+pub const PROTO_pup = 0o014;
+pub const PROTO_udp = 0o021;
+pub const PROTO_hmp = 0o024;
+pub const PROTO_xns_idp = 0o026;
+pub const PROTO_rdp = 0o033;
+pub const PROTO_iso_tp4 = 0o035;
+pub const PROTO_xtp = 0o044;
+pub const PROTO_ddp = 0o045;
+pub const PROTO_idpr_cmtp = 0o046;
+pub const PROTO_ipv6 = 0o051;
+pub const PROTO_ipv6_route = 0o053;
+pub const PROTO_ipv6_frag = 0o054;
+pub const PROTO_idrp = 0o055;
+pub const PROTO_rsvp = 0o056;
+pub const PROTO_gre = 0o057;
+pub const PROTO_esp = 0o062;
+pub const PROTO_ah = 0o063;
+pub const PROTO_skip = 0o071;
+pub const PROTO_ipv6_icmp = 0o072;
+pub const PROTO_ipv6_nonxt = 0o073;
+pub const PROTO_ipv6_opts = 0o074;
+pub const PROTO_rspf = 0o111;
+pub const PROTO_vmtp = 0o121;
+pub const PROTO_ospf = 0o131;
+pub const PROTO_ipip = 0o136;
+pub const PROTO_encap = 0o142;
+pub const PROTO_pim = 0o147;
+pub const PROTO_raw = 0o377;
+
+pub const PF_UNSPEC = 0;
+pub const PF_LOCAL = 1;
+pub const PF_UNIX = PF_LOCAL;
+pub const PF_FILE = PF_LOCAL;
+pub const PF_INET = 2;
+pub const PF_AX25 = 3;
+pub const PF_IPX = 4;
+pub const PF_APPLETALK = 5;
+pub const PF_NETROM = 6;
+pub const PF_BRIDGE = 7;
+pub const PF_ATMPVC = 8;
+pub const PF_X25 = 9;
+pub const PF_INET6 = 10;
+pub const PF_ROSE = 11;
+pub const PF_DECnet = 12;
+pub const PF_NETBEUI = 13;
+pub const PF_SECURITY = 14;
+pub const PF_KEY = 15;
+pub const PF_NETLINK = 16;
+pub const PF_ROUTE = PF_NETLINK;
+pub const PF_PACKET = 17;
+pub const PF_ASH = 18;
+pub const PF_ECONET = 19;
+pub const PF_ATMSVC = 20;
+pub const PF_RDS = 21;
+pub const PF_SNA = 22;
+pub const PF_IRDA = 23;
+pub const PF_PPPOX = 24;
+pub const PF_WANPIPE = 25;
+pub const PF_LLC = 26;
+pub const PF_IB = 27;
+pub const PF_MPLS = 28;
+pub const PF_CAN = 29;
+pub const PF_TIPC = 30;
+pub const PF_BLUETOOTH = 31;
+pub const PF_IUCV = 32;
+pub const PF_RXRPC = 33;
+pub const PF_ISDN = 34;
+pub const PF_PHONET = 35;
+pub const PF_IEEE802154 = 36;
+pub const PF_CAIF = 37;
+pub const PF_ALG = 38;
+pub const PF_NFC = 39;
+pub const PF_VSOCK = 40;
+pub const PF_MAX = 41;
+
+pub const AF_UNSPEC = PF_UNSPEC;
+pub const AF_LOCAL = PF_LOCAL;
+pub const AF_UNIX = AF_LOCAL;
+pub const AF_FILE = AF_LOCAL;
+pub const AF_INET = PF_INET;
+pub const AF_AX25 = PF_AX25;
+pub const AF_IPX = PF_IPX;
+pub const AF_APPLETALK = PF_APPLETALK;
+pub const AF_NETROM = PF_NETROM;
+pub const AF_BRIDGE = PF_BRIDGE;
+pub const AF_ATMPVC = PF_ATMPVC;
+pub const AF_X25 = PF_X25;
+pub const AF_INET6 = PF_INET6;
+pub const AF_ROSE = PF_ROSE;
+pub const AF_DECnet = PF_DECnet;
+pub const AF_NETBEUI = PF_NETBEUI;
+pub const AF_SECURITY = PF_SECURITY;
+pub const AF_KEY = PF_KEY;
+pub const AF_NETLINK = PF_NETLINK;
+pub const AF_ROUTE = PF_ROUTE;
+pub const AF_PACKET = PF_PACKET;
+pub const AF_ASH = PF_ASH;
+pub const AF_ECONET = PF_ECONET;
+pub const AF_ATMSVC = PF_ATMSVC;
+pub const AF_RDS = PF_RDS;
+pub const AF_SNA = PF_SNA;
+pub const AF_IRDA = PF_IRDA;
+pub const AF_PPPOX = PF_PPPOX;
+pub const AF_WANPIPE = PF_WANPIPE;
+pub const AF_LLC = PF_LLC;
+pub const AF_IB = PF_IB;
+pub const AF_MPLS = PF_MPLS;
+pub const AF_CAN = PF_CAN;
+pub const AF_TIPC = PF_TIPC;
+pub const AF_BLUETOOTH = PF_BLUETOOTH;
+pub const AF_IUCV = PF_IUCV;
+pub const AF_RXRPC = PF_RXRPC;
+pub const AF_ISDN = PF_ISDN;
+pub const AF_PHONET = PF_PHONET;
+pub const AF_IEEE802154 = PF_IEEE802154;
+pub const AF_CAIF = PF_CAIF;
+pub const AF_ALG = PF_ALG;
+pub const AF_NFC = PF_NFC;
+pub const AF_VSOCK = PF_VSOCK;
+pub const AF_MAX = PF_MAX;
+
+pub const DT_UNKNOWN = 0;
+pub const DT_FIFO = 1;
+pub const DT_CHR = 2;
+pub const DT_DIR = 4;
+pub const DT_BLK = 6;
+pub const DT_REG = 8;
+pub const DT_LNK = 10;
+pub const DT_SOCK = 12;
+pub const DT_WHT = 14;
+
+
+pub const TCGETS = 0x5401;
+pub const TCSETS = 0x5402;
+pub const TCSETSW = 0x5403;
+pub const TCSETSF = 0x5404;
+pub const TCGETA = 0x5405;
+pub const TCSETA = 0x5406;
+pub const TCSETAW = 0x5407;
+pub const TCSETAF = 0x5408;
+pub const TCSBRK = 0x5409;
+pub const TCXONC = 0x540A;
+pub const TCFLSH = 0x540B;
+pub const TIOCEXCL = 0x540C;
+pub const TIOCNXCL = 0x540D;
+pub const TIOCSCTTY = 0x540E;
+pub const TIOCGPGRP = 0x540F;
+pub const TIOCSPGRP = 0x5410;
+pub const TIOCOUTQ = 0x5411;
+pub const TIOCSTI = 0x5412;
+pub const TIOCGWINSZ = 0x5413;
+pub const TIOCSWINSZ = 0x5414;
+pub const TIOCMGET = 0x5415;
+pub const TIOCMBIS = 0x5416;
+pub const TIOCMBIC = 0x5417;
+pub const TIOCMSET = 0x5418;
+pub const TIOCGSOFTCAR = 0x5419;
+pub const TIOCSSOFTCAR = 0x541A;
+pub const FIONREAD = 0x541B;
+pub const TIOCINQ = FIONREAD;
+pub const TIOCLINUX = 0x541C;
+pub const TIOCCONS = 0x541D;
+pub const TIOCGSERIAL = 0x541E;
+pub const TIOCSSERIAL = 0x541F;
+pub const TIOCPKT = 0x5420;
+pub const FIONBIO = 0x5421;
+pub const TIOCNOTTY = 0x5422;
+pub const TIOCSETD = 0x5423;
+pub const TIOCGETD = 0x5424;
+pub const TCSBRKP = 0x5425;
+pub const TIOCSBRK = 0x5427;
+pub const TIOCCBRK = 0x5428;
+pub const TIOCGSID = 0x5429;
+pub const TIOCGRS485 = 0x542E;
+pub const TIOCSRS485 = 0x542F;
+pub const TIOCGPTN = 0x80045430;
+pub const TIOCSPTLCK = 0x40045431;
+pub const TIOCGDEV = 0x80045432;
+pub const TCGETX = 0x5432;
+pub const TCSETX = 0x5433;
+pub const TCSETXF = 0x5434;
+pub const TCSETXW = 0x5435;
+pub const TIOCSIG = 0x40045436;
+pub const TIOCVHANGUP = 0x5437;
+pub const TIOCGPKT = 0x80045438;
+pub const TIOCGPTLCK = 0x80045439;
+pub const TIOCGEXCL = 0x80045440;
+
+fn unsigned(s: i32) -> u32 { @bitCast(u32, s) }
+fn signed(s: u32) -> i32 { @bitCast(i32, s) }
+pub fn WEXITSTATUS(s: i32) -> i32 { signed((unsigned(s) & 0xff00) >> 8) }
+pub fn WTERMSIG(s: i32) -> i32 { signed(unsigned(s) & 0x7f) }
+pub fn WSTOPSIG(s: i32) -> i32 { WEXITSTATUS(s) }
+pub fn WIFEXITED(s: i32) -> bool { WTERMSIG(s) == 0 }
+pub fn WIFSTOPPED(s: i32) -> bool { (u16)(((unsigned(s)&0xffff)*%0x10001)>>8) > 0x7f00 }
+pub fn WIFSIGNALED(s: i32) -> bool { (unsigned(s)&0xffff)-%1 < 0xff }
+
+
+pub const winsize = extern struct {
+    ws_row: u16,
+    ws_col: u16,
+    ws_xpixel: u16,
+    ws_ypixel: u16,
+};
+
+/// Get the errno from a syscall return value, or 0 for no error.
+pub fn getErrno(r: usize) -> usize {
+    const signed_r = @bitCast(isize, r);
+    if (signed_r > -4096 and signed_r < 0) usize(-signed_r) else 0
+}
+
+pub fn dup2(old: i32, new: i32) -> usize {
+    arch.syscall2(arch.SYS_dup2, usize(old), usize(new))
+}
+
+pub fn chdir(path: &const u8) -> usize {
+    arch.syscall1(arch.SYS_chdir, @ptrToInt(path))
+}
+
+pub fn execve(path: &const u8, argv: &const ?&const u8, envp: &const ?&const u8) -> usize {
+    arch.syscall3(arch.SYS_execve, @ptrToInt(path), @ptrToInt(argv), @ptrToInt(envp))
+}
+
+pub fn fork() -> usize {
+    arch.syscall0(arch.SYS_fork)
+}
+
+pub fn getcwd(buf: &u8, size: usize) -> usize {
+    arch.syscall2(arch.SYS_getcwd, @ptrToInt(buf), size)
+}
+
+pub fn getdents(fd: i32, dirp: &u8, count: usize) -> usize {
+    arch.syscall3(arch.SYS_getdents, usize(fd), @ptrToInt(dirp), count)
+}
+
+pub fn isatty(fd: i32) -> bool {
+    var wsz: winsize = undefined;
+    return arch.syscall3(arch.SYS_ioctl, usize(fd), TIOCGWINSZ, @ptrToInt(&wsz)) == 0;
+}
+
+pub fn readlink(noalias path: &const u8, noalias buf_ptr: &u8, buf_len: usize) -> usize {
+    arch.syscall3(arch.SYS_readlink, @ptrToInt(path), @ptrToInt(buf_ptr), buf_len)
+}
+
+pub fn mkdir(path: &const u8, mode: u32) -> usize {
+    arch.syscall2(arch.SYS_mkdir, @ptrToInt(path), mode)
+}
+
+pub fn mmap(address: ?&u8, length: usize, prot: usize, flags: usize, fd: i32, offset: isize)
+    -> usize
+{
+    arch.syscall6(arch.SYS_mmap, @ptrToInt(address), length, prot, flags, usize(fd),
+        @bitCast(usize, offset))
+}
+
+pub fn munmap(address: &u8, length: usize) -> usize {
+    arch.syscall2(arch.SYS_munmap, @ptrToInt(address), length)
+}
+
+pub fn read(fd: i32, buf: &u8, count: usize) -> usize {
+    arch.syscall3(arch.SYS_read, usize(fd), @ptrToInt(buf), count)
+}
+
+pub fn rmdir(path: &const u8) -> usize {
+    arch.syscall1(arch.SYS_rmdir, @ptrToInt(path))
+}
+
+pub fn symlink(existing: &const u8, new: &const u8) -> usize {
+    arch.syscall2(arch.SYS_symlink, @ptrToInt(existing), @ptrToInt(new))
+}
+
+pub fn pread(fd: i32, buf: &u8, count: usize, offset: usize) -> usize {
+    arch.syscall4(arch.SYS_pread, usize(fd), @ptrToInt(buf), count, offset)
+}
+
+pub fn pipe(fd: &[2]i32) -> usize {
+    pipe2(fd, 0)
+}
+
+pub fn pipe2(fd: &[2]i32, flags: usize) -> usize {
+    arch.syscall2(arch.SYS_pipe2, @ptrToInt(fd), flags)
+}
+
+pub fn write(fd: i32, buf: &const u8, count: usize) -> usize {
+    arch.syscall3(arch.SYS_write, usize(fd), @ptrToInt(buf), count)
+}
+
+pub fn pwrite(fd: i32, buf: &const u8, count: usize, offset: usize) -> usize {
+    arch.syscall4(arch.SYS_pwrite, usize(fd), @ptrToInt(buf), count, offset)
+}
+
+pub fn rename(old: &const u8, new: &const u8) -> usize {
+    arch.syscall2(arch.SYS_rename, @ptrToInt(old), @ptrToInt(new))
+}
+
+pub fn open(path: &const u8, flags: u32, perm: usize) -> usize {
+    arch.syscall3(arch.SYS_open, @ptrToInt(path), flags, perm)
+}
+
+pub fn create(path: &const u8, perm: usize) -> usize {
+    arch.syscall2(arch.SYS_creat, @ptrToInt(path), perm)
+}
+
+pub fn openat(dirfd: i32, path: &const u8, flags: usize, mode: usize) -> usize {
+    arch.syscall4(arch.SYS_openat, usize(dirfd), @ptrToInt(path), flags, mode)
+}
+
+pub fn close(fd: i32) -> usize {
+    arch.syscall1(arch.SYS_close, usize(fd))
+}
+
+pub fn lseek(fd: i32, offset: isize, ref_pos: usize) -> usize {
+    arch.syscall3(arch.SYS_lseek, usize(fd), @bitCast(usize, offset), ref_pos)
+}
+
+pub fn exit(status: i32) -> noreturn {
+    _ = arch.syscall1(arch.SYS_exit, @bitCast(usize, isize(status)));
+    unreachable
+}
+
+pub fn getrandom(buf: &u8, count: usize, flags: u32) -> usize {
+    arch.syscall3(arch.SYS_getrandom, @ptrToInt(buf), count, usize(flags))
+}
+
+pub fn kill(pid: i32, sig: i32) -> usize {
+    arch.syscall2(arch.SYS_kill, @bitCast(usize, isize(pid)), usize(sig))
+}
+
+pub fn unlink(path: &const u8) -> usize {
+    arch.syscall1(arch.SYS_unlink, @ptrToInt(path))
+}
+
+pub fn waitpid(pid: i32, status: &i32, options: i32) -> usize {
+    arch.syscall4(arch.SYS_wait4, @bitCast(usize, isize(pid)), @ptrToInt(status), @bitCast(usize, isize(options)), 0)
+}
+
+pub fn nanosleep(req: &const timespec, rem: ?&timespec) -> usize {
+    arch.syscall2(arch.SYS_nanosleep, @ptrToInt(req), @ptrToInt(rem))
+}
+
+pub fn setuid(uid: u32) -> usize {
+    arch.syscall1(arch.SYS_setuid, uid)
+}
+
+pub fn setgid(gid: u32) -> usize {
+    arch.syscall1(arch.SYS_setgid, gid)
+}
+
+pub fn setreuid(ruid: u32, euid: u32) -> usize {
+    arch.syscall2(arch.SYS_setreuid, ruid, euid)
+}
+
+pub fn setregid(rgid: u32, egid: u32) -> usize {
+    arch.syscall2(arch.SYS_setregid, rgid, egid)
+}
+
+pub fn sigprocmask(flags: u32, noalias set: &const sigset_t, noalias oldset: ?&sigset_t) -> usize {
+    arch.syscall4(arch.SYS_rt_sigprocmask, flags, @ptrToInt(set), @ptrToInt(oldset), NSIG/8)
+}
+
+pub fn sigaction(sig: u6, noalias act: &const Sigaction, noalias oact: ?&Sigaction) -> usize {
+    assert(sig >= 1);
+    assert(sig != SIGKILL);
+    assert(sig != SIGSTOP);
+    var ksa = k_sigaction {
+        .handler = act.handler,
+        .flags = act.flags | SA_RESTORER,
+        .mask = undefined,
+        .restorer = @ptrCast(extern fn(), arch.restore_rt),
+    };
+    var ksa_old: k_sigaction = undefined;
+    @memcpy(@ptrCast(&u8, &ksa.mask), @ptrCast(&const u8, &act.mask), 8);
+    const result = arch.syscall4(arch.SYS_rt_sigaction, sig, @ptrToInt(&ksa), @ptrToInt(&ksa_old), @sizeOf(@typeOf(ksa.mask)));
+    const err = getErrno(result);
+    if (err != 0) {
+        return result;
+    }
+    if (oact) |old| {
+        old.handler = ksa_old.handler;
+        old.flags = @truncate(u32, ksa_old.flags);
+        @memcpy(@ptrCast(&u8, &old.mask), @ptrCast(&const u8, &ksa_old.mask), @sizeOf(@typeOf(ksa_old.mask)));
+    }
+    return 0;
+}
+
+const NSIG = 65;
+const sigset_t = [128 / @sizeOf(usize)]usize;
+const all_mask = []usize{@maxValue(usize)};
+const app_mask = []usize{0xfffffffc7fffffff};
+
+const k_sigaction = extern struct {
+    handler: extern fn(i32),
+    flags: usize,
+    restorer: extern fn(),
+    mask: [2]u32,
+};
+
+/// Renamed from `sigaction` to `Sigaction` to avoid conflict with the syscall.
+pub const Sigaction = struct {
+    handler: extern fn(i32),
+    mask: sigset_t,
+    flags: u32,
+};
+
+pub const SIG_ERR = @intToPtr(extern fn(i32), @maxValue(usize));
+pub const SIG_DFL = @intToPtr(extern fn(i32), 0);
+pub const SIG_IGN = @intToPtr(extern fn(i32), 1);
+pub const empty_sigset = []usize{0} ** sigset_t.len;
+
+pub fn raise(sig: i32) -> usize {
+    // TODO implement, see linux equivalent for what we want to try and do
+    return 0;
+}
+
+fn blockAllSignals(set: &sigset_t) {
+    // TODO implement
+}
+
+fn blockAppSignals(set: &sigset_t) {
+    // TODO implement
+}
+
+fn restoreSignals(set: &sigset_t) {
+    // TODO implement
+}
+
+pub fn sigaddset(set: &sigset_t, sig: u6) {
+    const s = sig - 1;
+    (*set)[usize(s) / usize.bit_count] |= usize(1) << (s & (usize.bit_count - 1));
+}
+
+pub fn sigismember(set: &const sigset_t, sig: u6) -> bool {
+    const s = sig - 1;
+    return ((*set)[usize(s) / usize.bit_count] & (usize(1) << (s & (usize.bit_count - 1)))) != 0;
+}
+
+
+pub const sa_family_t = u16;
+pub const socklen_t = u32;
+pub const in_addr = u32;
+pub const in6_addr = [16]u8;
+
+pub const sockaddr = extern struct {
+    family: sa_family_t,
+    port: u16,
+    data: [12]u8,
+};
+
+pub const sockaddr_in = extern struct {
+    family: sa_family_t,
+    port: u16,
+    addr: in_addr,
+    zero: [8]u8,
+};
+
+pub const sockaddr_in6 = extern struct {
+    family: sa_family_t,
+    port: u16,
+    flowinfo: u32,
+    addr: in6_addr,
+    scope_id: u32,
+};
+
+pub const iovec = extern struct {
+    iov_base: &u8,
+    iov_len: usize,
+};
+
+//
+//const IF_NAMESIZE = 16;
+//
+//export struct ifreq {
+//    ifrn_name: [IF_NAMESIZE]u8,
+//    union {
+//        ifru_addr: sockaddr,
+//        ifru_dstaddr: sockaddr,
+//        ifru_broadaddr: sockaddr,
+//        ifru_netmask: sockaddr,
+//        ifru_hwaddr: sockaddr,
+//        ifru_flags: i16,
+//        ifru_ivalue: i32,
+//        ifru_mtu: i32,
+//        ifru_map: ifmap,
+//        ifru_slave: [IF_NAMESIZE]u8,
+//        ifru_newname: [IF_NAMESIZE]u8,
+//        ifru_data: &u8,
+//    } ifr_ifru;
+//}
+//
+
+pub fn getsockname(fd: i32, noalias addr: &sockaddr, noalias len: &socklen_t) -> usize {
+    arch.syscall3(arch.SYS_getsockname, usize(fd), @ptrToInt(addr), @ptrToInt(len))
+}
+
+pub fn getpeername(fd: i32, noalias addr: &sockaddr, noalias len: &socklen_t) -> usize {
+    arch.syscall3(arch.SYS_getpeername, usize(fd), @ptrToInt(addr), @ptrToInt(len))
+}
+
+pub fn socket(domain: i32, socket_type: i32, protocol: i32) -> usize {
+    arch.syscall3(arch.SYS_socket, usize(domain), usize(socket_type), usize(protocol))
+}
+
+pub fn setsockopt(fd: i32, level: i32, optname: i32, optval: &const u8, optlen: socklen_t) -> usize {
+    arch.syscall5(arch.SYS_setsockopt, usize(fd), usize(level), usize(optname), usize(optval), @ptrToInt(optlen))
+}
+
+pub fn getsockopt(fd: i32, level: i32, optname: i32, noalias optval: &u8, noalias optlen: &socklen_t) -> usize {
+    arch.syscall5(arch.SYS_getsockopt, usize(fd), usize(level), usize(optname), @ptrToInt(optval), @ptrToInt(optlen))
+}
+
+pub fn sendmsg(fd: i32, msg: &const arch.msghdr, flags: u32) -> usize {
+    arch.syscall3(arch.SYS_sendmsg, usize(fd), @ptrToInt(msg), flags)
+}
+
+pub fn connect(fd: i32, addr: &const sockaddr, len: socklen_t) -> usize {
+    arch.syscall3(arch.SYS_connect, usize(fd), @ptrToInt(addr), usize(len))
+}
+
+pub fn recvmsg(fd: i32, msg: &arch.msghdr, flags: u32) -> usize {
+    arch.syscall3(arch.SYS_recvmsg, usize(fd), @ptrToInt(msg), flags)
+}
+
+pub fn recvfrom(fd: i32, noalias buf: &u8, len: usize, flags: u32,
+    noalias addr: ?&sockaddr, noalias alen: ?&socklen_t) -> usize
+{
+    arch.syscall6(arch.SYS_recvfrom, usize(fd), @ptrToInt(buf), len, flags, @ptrToInt(addr), @ptrToInt(alen))
+}
+
+pub fn shutdown(fd: i32, how: i32) -> usize {
+    arch.syscall2(arch.SYS_shutdown, usize(fd), usize(how))
+}
+
+pub fn bind(fd: i32, addr: &const sockaddr, len: socklen_t) -> usize {
+    arch.syscall3(arch.SYS_bind, usize(fd), @ptrToInt(addr), usize(len))
+}
+
+pub fn listen(fd: i32, backlog: i32) -> usize {
+    arch.syscall2(arch.SYS_listen, usize(fd), usize(backlog))
+}
+
+pub fn sendto(fd: i32, buf: &const u8, len: usize, flags: u32, addr: ?&const sockaddr, alen: socklen_t) -> usize {
+    arch.syscall6(arch.SYS_sendto, usize(fd), @ptrToInt(buf), len, flags, @ptrToInt(addr), usize(alen))
+}
+
+pub fn socketpair(domain: i32, socket_type: i32, protocol: i32, fd: [2]i32) -> usize {
+    arch.syscall4(arch.SYS_socketpair, usize(domain), usize(socket_type), usize(protocol), @ptrToInt(&fd[0]))
+}
+
+pub fn accept(fd: i32, noalias addr: &sockaddr, noalias len: &socklen_t) -> usize {
+    accept4(fd, addr, len, 0)
+}
+
+pub fn accept4(fd: i32, noalias addr: &sockaddr, noalias len: &socklen_t, flags: u32) -> usize {
+    arch.syscall4(arch.SYS_accept4, usize(fd), @ptrToInt(addr), @ptrToInt(len), flags)
+}
+
+// error NameTooLong;
+// error SystemResources;
+// error Io;
+// 
+// pub fn if_nametoindex(name: []u8) -> %u32 {
+//     var ifr: ifreq = undefined;
+// 
+//     if (name.len >= ifr.ifr_name.len) {
+//         return error.NameTooLong;
+//     }
+// 
+//     const socket_ret = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
+//     const socket_err = getErrno(socket_ret);
+//     if (socket_err > 0) {
+//         return error.SystemResources;
+//     }
+//     const socket_fd = i32(socket_ret);
+//     @memcpy(&ifr.ifr_name[0], &name[0], name.len);
+//     ifr.ifr_name[name.len] = 0;
+//     const ioctl_ret = ioctl(socket_fd, SIOCGIFINDEX, &ifr);
+//     close(socket_fd);
+//     const ioctl_err = getErrno(ioctl_ret);
+//     if (ioctl_err > 0) {
+//         return error.Io;
+//     }
+//     return ifr.ifr_ifindex;
+// }
+
+pub const Stat = arch.Stat;
+pub const timespec = arch.timespec;
+
+pub fn fstat(fd: i32, stat_buf: &Stat) -> usize {
+    arch.syscall2(arch.SYS_fstat, usize(fd), @ptrToInt(stat_buf))
+}

std/os/freebsd_errno.zig

@@ -0,0 +1,121 @@
+pub const EPERM           = 1;  // Operation not permitted
+pub const ENOENT          = 2;  // No such file or directory
+pub const ESRCH           = 3;  // No such process
+pub const EINTR           = 4;  // Interrupted system call
+pub const EIO             = 5;  // Input/output error
+pub const ENXIO           = 6;  // Device not configured
+pub const E2BIG           = 7;  // Argument list too long
+pub const ENOEXEC         = 8;  // Exec format error
+pub const EBADF           = 9;  // Bad file descriptor
+pub const ECHILD          = 10;  // No child processes
+pub const EDEADLK         = 11;  // Resource deadlock avoided
+     // 11 was EAGAIN
+pub const ENOMEM          = 12;  // Cannot allocate memory
+pub const EACCES          = 13;  // Permission denied
+pub const EFAULT          = 14;  // Bad address
+pub const ENOTBLK         = 15;  // Block device required
+pub const EBUSY           = 16;  // Device busy
+pub const EEXIST          = 17;  // File exists
+pub const EXDEV           = 18;  // Cross-device link
+pub const ENODEV          = 19;  // Operation not supported by device
+pub const ENOTDIR         = 20;  // Not a directory
+pub const EISDIR          = 21;  // Is a directory
+pub const EINVAL          = 22;  // Invalid argument
+pub const ENFILE          = 23;  // Too many open files in system
+pub const EMFILE          = 24;  // Too many open files
+pub const ENOTTY          = 25;  // Inappropriate ioctl for device
+pub const ETXTBSY         = 26;  // Text file busy
+pub const EFBIG           = 27;  // File too large
+pub const ENOSPC          = 28;  // No space left on device
+pub const ESPIPE          = 29;  // Illegal seek
+pub const EROFS           = 30;  // Read-only filesystem
+pub const EMLINK          = 31;  // Too many links
+pub const EPIPE           = 32;  // Broken pipe
+
+// math software
+pub const EDOM            = 33;  // Numerical argument out of domain
+pub const ERANGE          = 34;  // Result too large
+
+// non-blocking and interrupt i/o
+pub const EAGAIN          = 35;  // Resource temporarily unavailable
+pub const EWOULDBLOCK     = EAGAIN;  // Operation would block
+pub const EINPROGRESS     = 36;  // Operation now in progress
+pub const EALREADY        = 37;  // Operation already in progress
+
+// ipc/network software -- argument errors
+pub const ENOTSOCK        = 38;  // Socket operation on non-socket
+pub const EDESTADDRREQ    = 39;  // Destination address required
+pub const EMSGSIZE        = 40;  // Message too long
+pub const EPROTOTYPE      = 41;  // Protocol wrong type for socket
+pub const ENOPROTOOPT     = 42;  // Protocol not available
+pub const EPROTONOSUPPORT = 43;  // Protocol not supported
+pub const ESOCKTNOSUPPORT = 44;  // Socket type not supported
+pub const EOPNOTSUPP      = 45;  // Operation not supported
+pub const ENOTSUP         = EOPNOTSUPP; // Operation not supported
+pub const EPFNOSUPPORT    = 46;  // Protocol family not supported
+pub const EAFNOSUPPORT    = 47;  // Address family not supported by protocol family
+pub const EADDRINUSE      = 48;  // Address already in use
+pub const EADDRNOTAVAIL   = 49;  // Can't assign requested address
+
+// ipc/network software -- operational errors
+pub const ENETDOWN        = 50;  // Network is down
+pub const ENETUNREACH     = 51;  // Network is unreachable
+pub const ENETRESET       = 52;  // Network dropped connection on reset
+pub const ECONNABORTED    = 53;  // Software caused connection abort
+pub const ECONNRESET      = 54;  // Connection reset by peer
+pub const ENOBUFS         = 55;  // No buffer space available
+pub const EISCONN         = 56;  // Socket is already connected
+pub const ENOTCONN        = 57;  // Socket is not connected
+pub const ESHUTDOWN       = 58;  // Can't send after socket shutdown
+pub const ETOOMANYREFS    = 59;  // Too many references: can't splice
+pub const ETIMEDOUT       = 60;  // Operation timed out
+pub const ECONNREFUSED    = 61;  // Connection refused
+
+pub const ELOOP           = 62;  // Too many levels of symbolic links
+pub const ENAMETOOLONG    = 63;  // File name too long
+
+// should be rearranged
+pub const EHOSTDOWN       = 64;  // Host is down
+pub const EHOSTUNREACH    = 65;  // No route to host
+pub const ENOTEMPTY       = 66;  // Directory not empty
+
+// quotas & mush
+pub const EPROCLIM        = 67;  // Too many processes
+pub const EUSERS          = 68;  // Too many users
+pub const EDQUOT          = 69;  // Disc quota exceeded
+
+// Network File System
+pub const ESTALE          = 70;  // Stale NFS file handle
+pub const EREMOTE         = 71;  // Too many levels of remote in path
+pub const EBADRPC         = 72;  // RPC struct is bad
+pub const ERPCMISMATCH    = 73;  // RPC version wrong
+pub const EPROGUNAVAIL    = 74;  // RPC prog. not avail
+pub const EPROGMISMATCH   = 75;  // Program version wrong
+pub const EPROCUNAVAIL    = 76;  // Bad procedure for program
+
+pub const ENOLCK          = 77;  // No locks available
+pub const ENOSYS          = 78;  // Function not implemented
+
+pub const EFTYPE          = 79;  // Inappropriate file type or format
+pub const EAUTH           = 80;  // Authentication error
+pub const ENEEDAUTH       = 81;  // Need authenticator
+pub const EIDRM           = 82;  // Identifier removed
+pub const ENOMSG          = 83;  // No message of desired type
+pub const EOVERFLOW       = 84;  // Value too large to be stored in data type
+pub const ECANCELED       = 85;  // Operation canceled
+pub const EILSEQ          = 86;  // Illegal byte sequence
+pub const ENOATTR         = 87;  // Attribute not found
+
+pub const EDOOFUS         = 88;  // Programming error
+
+pub const EBADMSG         = 89;  // Bad message
+pub const EMULTIHOP       = 90;  // Multihop attempted
+pub const ENOLINK         = 91;  // Link has been severed
+pub const EPROTO          = 92;  // Protocol error
+
+pub const ENOTCAPABLE     = 93;  // Capabilities insufficient
+pub const ECAPMODE        = 94;  // Not permitted in capability mode
+pub const ENOTRECOVERABLE = 95;  // State not recoverable
+pub const EOWNERDEAD      = 96;  // Previous owner died
+
+pub const ELAST           = 96;  // Must be equal largest errno

std/os/freebsd_i386.zig

@@ -0,0 +1,614 @@
+const freebsd = @import("freebsd.zig");
+const socklen_t = freebsd.socklen_t;
+const iovec = freebsd.iovec;
+
+pub const SYS_syscall = 0;
+pub const SYS_exit = 1;
+pub const SYS_fork = 2;
+pub const SYS_read = 3;
+pub const SYS_write = 4;
+pub const SYS_open = 5;
+pub const SYS_close = 6;
+pub const SYS_wait4 = 7;
+// 8 is old creat
+pub const SYS_link = 9;
+pub const SYS_unlink = 10;
+// 11 is obsolete execv
+pub const SYS_chdir = 12;
+pub const SYS_fchdir = 13;
+pub const SYS_freebsd11_mknod = 14;
+pub const SYS_chmod = 15;
+pub const SYS_chown = 16;
+pub const SYS_break = 17;
+// 18 is freebsd4 getfsstat
+// 19 is old lseek
+pub const SYS_getpid = 20;
+pub const SYS_mount = 21;
+pub const SYS_unmount = 22;
+pub const SYS_setuid = 23;
+pub const SYS_getuid = 24;
+pub const SYS_geteuid = 25;
+pub const SYS_ptrace = 26;
+pub const SYS_recvmsg = 27;
+pub const SYS_sendmsg = 28;
+pub const SYS_recvfrom = 29;
+pub const SYS_accept = 30;
+pub const SYS_getpeername = 31;
+pub const SYS_getsockname = 32;
+pub const SYS_access = 33;
+pub const SYS_chflags = 34;
+pub const SYS_fchflags = 35;
+pub const SYS_sync = 36;
+pub const SYS_kill = 37;
+// 38 is old stat
+pub const SYS_getppid = 39;
+// 40 is old lstat
+pub const SYS_dup = 41;
+pub const SYS_freebsd10_pipe = 42;
+pub const SYS_getegid = 43;
+pub const SYS_profil = 44;
+pub const SYS_ktrace = 45;
+// 46 is old sigaction
+pub const SYS_getgid = 47;
+// 48 is old sigprocmask
+pub const SYS_getlogin = 49;
+pub const SYS_setlogin = 50;
+pub const SYS_acct = 51;
+// 52 is old sigpending
+pub const SYS_sigaltstack = 53;
+pub const SYS_ioctl = 54;
+pub const SYS_reboot = 55;
+pub const SYS_revoke = 56;
+pub const SYS_symlink = 57;
+pub const SYS_readlink = 58;
+pub const SYS_execve = 59;
+pub const SYS_umask = 60;
+pub const SYS_chroot = 61;
+// 62 is old fstat
+// 63 is old getkerninfo
+// 64 is old getpagesize
+pub const SYS_msync = 65;
+pub const SYS_vfork = 66;
+// 67 is obsolete vread
+// 68 is obsolete vwrite
+pub const SYS_sbrk = 69;
+pub const SYS_sstk = 70;
+// 71 is old mmap
+pub const SYS_vadvise = 72;
+pub const SYS_munmap = 73;
+pub const SYS_mprotect = 74;
+pub const SYS_madvise = 75;
+// 76 is obsolete vhangup
+// 77 is obsolete vlimit
+pub const SYS_mincore = 78;
+pub const SYS_getgroups = 79;
+pub const SYS_setgroups = 80;
+pub const SYS_getpgrp = 81;
+pub const SYS_setpgid = 82;
+pub const SYS_setitimer = 83;
+// 84 is old wait
+pub const SYS_swapon = 85;
+pub const SYS_getitimer = 86;
+// 87 is old gethostname
+// 88 is old sethostname
+pub const SYS_getdtablesize = 89;
+pub const SYS_dup2 = 90;
+pub const SYS_fcntl = 92;
+pub const SYS_select = 93;
+pub const SYS_fsync = 95;
+pub const SYS_setpriority = 96;
+pub const SYS_socket = 97;
+pub const SYS_connect = 98;
+// 99 is old accept
+pub const SYS_getpriority = 100;
+// 101 is old send
+// 102 is old recv
+// 103 is old sigreturn
+pub const SYS_bind = 104;
+pub const SYS_setsockopt = 105;
+pub const SYS_listen = 106;
+// 107 is obsolete vtimes
+// 108 is old sigvec
+// 109 is old sigblock
+// 110 is old sigsetmask
+// 111 is old sigsuspend
+// 112 is old sigstack
+// 113 is old recvmsg
+// 114 is old sendmsg
+// 115 is obsolete vtrace
+pub const SYS_gettimeofday = 116;
+pub const SYS_getrusage = 117;
+pub const SYS_getsockopt = 118;
+pub const SYS_readv = 120;
+pub const SYS_writev = 121;
+pub const SYS_settimeofday = 122;
+pub const SYS_fchown = 123;
+pub const SYS_fchmod = 124;
+// 125 is old recvfrom
+pub const SYS_setreuid = 126;
+pub const SYS_setregid = 127;
+pub const SYS_rename = 128;
+// 129 is old truncate
+// 130 is old ftruncate
+pub const SYS_flock = 131;
+pub const SYS_mkfifo = 132;
+pub const SYS_sendto = 133;
+pub const SYS_shutdown = 134;
+pub const SYS_socketpair = 135;
+pub const SYS_mkdir = 136;
+pub const SYS_rmdir = 137;
+pub const SYS_utimes = 138;
+// 139 is obsolete 4.2 sigreturn
+pub const SYS_adjtime = 140;
+// 141 is old getpeername
+// 142 is old gethostid
+// 143 is old sethostid
+// 144 is old getrlimit
+// 145 is old setrlimit
+// 146 is old killpg
+pub const SYS_setsid = 147;
+pub const SYS_quotactl = 148;
+// 149 is old quota
+// 150 is old getsockname
+pub const SYS_nlm_syscall = 154;
+pub const SYS_nfssvc = 155;
+// 156 is old getdirentries
+// 157 is freebsd4 statfs
+// 158 is freebsd4 fstatfs
+pub const SYS_lgetfh = 160;
+pub const SYS_getfh = 161;
+// 162 is freebsd4 getdomainname
+// 163 is freebsd4 setdomainname
+// 164 is freebsd4 uname
+pub const SYS_sysarch = 165;
+pub const SYS_rtprio = 166;
+pub const SYS_semsys = 169;
+pub const SYS_msgsys = 170;
+pub const SYS_shmsys = 171;
+// 173 is freebsd6 pread
+// 174 is freebsd6 pwrite
+pub const SYS_setfib = 175;
+pub const SYS_ntp_adjtime = 176;
+pub const SYS_setgid = 181;
+pub const SYS_setegid = 182;
+pub const SYS_seteuid = 183;
+pub const SYS_freebsd11_stat = 188;
+pub const SYS_freebsd11_fstat = 189;
+pub const SYS_freebsd11_lstat = 190;
+pub const SYS_pathconf = 191;
+pub const SYS_fpathconf = 192;
+pub const SYS_getrlimit = 194;
+pub const SYS_setrlimit = 195;
+pub const SYS_freebsd11_getdirentries = 196;
+// 197 is freebsd6 mmap
+pub const SYS___syscall = 198;
+// 199 is freebsd6 lseek
+// 200 is freebsd6 truncate
+// 201 is freebsd6 ftruncate
+pub const SYS___sysctl = 202;
+pub const SYS_mlock = 203;
+pub const SYS_munlock = 204;
+pub const SYS_undelete = 205;
+pub const SYS_futimes = 206;
+pub const SYS_getpgid = 207;
+pub const SYS_poll = 209;
+pub const SYS_freebsd7___semctl = 220;
+pub const SYS_semget = 221;
+pub const SYS_semop = 222;
+pub const SYS_freebsd7_msgctl = 224;
+pub const SYS_msgget = 225;
+pub const SYS_msgsnd = 226;
+pub const SYS_msgrcv = 227;
+pub const SYS_shmat = 228;
+pub const SYS_freebsd7_shmctl = 229;
+pub const SYS_shmdt = 230;
+pub const SYS_shmget = 231;
+pub const SYS_clock_gettime = 232;
+pub const SYS_clock_settime = 233;
+pub const SYS_clock_getres = 234;
+pub const SYS_ktimer_create = 235;
+pub const SYS_ktimer_delete = 236;
+pub const SYS_ktimer_settime = 237;
+pub const SYS_ktimer_gettime = 238;
+pub const SYS_ktimer_getoverrun = 239;
+pub const SYS_nanosleep = 240;
+pub const SYS_ffclock_getcounter = 241;
+pub const SYS_ffclock_setestimate = 242;
+pub const SYS_ffclock_getestimate = 243;
+pub const SYS_clock_nanosleep = 244;
+pub const SYS_clock_getcpuclockid2 = 247;
+pub const SYS_ntp_gettime = 248;
+pub const SYS_minherit = 250;
+pub const SYS_rfork = 251;
+// 252 is obsolete openbsd_poll
+pub const SYS_issetugid = 253;
+pub const SYS_lchown = 254;
+pub const SYS_aio_read = 255;
+pub const SYS_aio_write = 256;
+pub const SYS_lio_listio = 257;
+pub const SYS_freebsd11_getdents = 272;
+pub const SYS_lchmod = 274;
+pub const SYS_netbsd_lchown = 275;
+pub const SYS_lutimes = 276;
+pub const SYS_netbsd_msync = 277;
+pub const SYS_freebsd11_nstat = 278;
+pub const SYS_freebsd11_nfstat = 279;
+pub const SYS_freebsd11_nlstat = 280;
+pub const SYS_preadv = 289;
+pub const SYS_pwritev = 290;
+// 297 is freebsd4 fhstatfs
+pub const SYS_fhopen = 298;
+pub const SYS_freebsd11_fhstat = 299;
+pub const SYS_modnext = 300;
+pub const SYS_modstat = 301;
+pub const SYS_modfnext = 302;
+pub const SYS_modfind = 303;
+pub const SYS_kldload = 304;
+pub const SYS_kldunload = 305;
+pub const SYS_kldfind = 306;
+pub const SYS_kldnext = 307;
+pub const SYS_kldstat = 308;
+pub const SYS_kldfirstmod = 309;
+pub const SYS_getsid = 310;
+pub const SYS_setresuid = 311;
+pub const SYS_setresgid = 312;
+// 313 is obsolete signanosleep
+pub const SYS_aio_return = 314;
+pub const SYS_aio_suspend = 315;
+pub const SYS_aio_cancel = 316;
+pub const SYS_aio_error = 317;
+// 318 is freebsd6 aio_read
+// 319 is freebsd6 aio_write
+// 320 is freebsd6 lio_listio
+pub const SYS_yield = 321;
+// 322 is obsolete thr_sleep
+// 323 is obsolete thr_wakeup
+pub const SYS_mlockall = 324;
+pub const SYS_munlockall = 325;
+pub const SYS___getcwd = 326;
+pub const SYS_sched_setparam = 327;
+pub const SYS_sched_getparam = 328;
+pub const SYS_sched_setscheduler = 329;
+pub const SYS_sched_getscheduler = 330;
+pub const SYS_sched_yield = 331;
+pub const SYS_sched_get_priority_max = 332;
+pub const SYS_sched_get_priority_min = 333;
+pub const SYS_sched_rr_get_interval = 334;
+pub const SYS_utrace = 335;
+// 336 is freebsd4 sendfile
+pub const SYS_kldsym = 337;
+pub const SYS_jail = 338;
+pub const SYS_nnpfs_syscall = 339;
+pub const SYS_sigprocmask = 340;
+pub const SYS_sigsuspend = 341;
+// 342 is freebsd4 sigaction
+pub const SYS_sigpending = 343;
+// 344 is freebsd4 sigreturn
+pub const SYS_sigtimedwait = 345;
+pub const SYS_sigwaitinfo = 346;
+pub const SYS___acl_get_file = 347;
+pub const SYS___acl_set_file = 348;
+pub const SYS___acl_get_fd = 349;
+pub const SYS___acl_set_fd = 350;
+pub const SYS___acl_delete_file = 351;
+pub const SYS___acl_delete_fd = 352;
+pub const SYS___acl_aclcheck_file = 353;
+pub const SYS___acl_aclcheck_fd = 354;
+pub const SYS_extattrctl = 355;
+pub const SYS_extattr_set_file = 356;
+pub const SYS_extattr_get_file = 357;
+pub const SYS_extattr_delete_file = 358;
+pub const SYS_aio_waitcomplete = 359;
+pub const SYS_getresuid = 360;
+pub const SYS_getresgid = 361;
+pub const SYS_kqueue = 362;
+pub const SYS_freebsd11_kevent = 363;
+pub const SYS_extattr_set_fd = 371;
+pub const SYS_extattr_get_fd = 372;
+pub const SYS_extattr_delete_fd = 373;
+pub const SYS___setugid = 374;
+pub const SYS_eaccess = 376;
+pub const SYS_afs3_syscall = 377;
+pub const SYS_nmount = 378;
+pub const SYS___mac_get_proc = 384;
+pub const SYS___mac_set_proc = 385;
+pub const SYS___mac_get_fd = 386;
+pub const SYS___mac_get_file = 387;
+pub const SYS___mac_set_fd = 388;
+pub const SYS___mac_set_file = 389;
+pub const SYS_kenv = 390;
+pub const SYS_lchflags = 391;
+pub const SYS_uuidgen = 392;
+pub const SYS_sendfile = 393;
+pub const SYS_mac_syscall = 394;
+pub const SYS_freebsd11_getfsstat = 395;
+pub const SYS_freebsd11_statfs = 396;
+pub const SYS_freebsd11_fstatfs = 397;
+pub const SYS_freebsd11_fhstatfs = 398;
+pub const SYS_ksem_close = 400;
+pub const SYS_ksem_post = 401;
+pub const SYS_ksem_wait = 402;
+pub const SYS_ksem_trywait = 403;
+pub const SYS_ksem_init = 404;
+pub const SYS_ksem_open = 405;
+pub const SYS_ksem_unlink = 406;
+pub const SYS_ksem_getvalue = 407;
+pub const SYS_ksem_destroy = 408;
+pub const SYS___mac_get_pid = 409;
+pub const SYS___mac_get_link = 410;
+pub const SYS___mac_set_link = 411;
+pub const SYS_extattr_set_link = 412;
+pub const SYS_extattr_get_link = 413;
+pub const SYS_extattr_delete_link = 414;
+pub const SYS___mac_execve = 415;
+pub const SYS_sigaction = 416;
+pub const SYS_sigreturn = 417;
+pub const SYS_getcontext = 421;
+pub const SYS_setcontext = 422;
+pub const SYS_swapcontext = 423;
+pub const SYS_swapoff = 424;
+pub const SYS___acl_get_link = 425;
+pub const SYS___acl_set_link = 426;
+pub const SYS___acl_delete_link = 427;
+pub const SYS___acl_aclcheck_link = 428;
+pub const SYS_sigwait = 429;
+pub const SYS_thr_create = 430;
+pub const SYS_thr_exit = 431;
+pub const SYS_thr_self = 432;
+pub const SYS_thr_kill = 433;
+pub const SYS_jail_attach = 436;
+pub const SYS_extattr_list_fd = 437;
+pub const SYS_extattr_list_file = 438;
+pub const SYS_extattr_list_link = 439;
+pub const SYS_ksem_timedwait = 441;
+pub const SYS_thr_suspend = 442;
+pub const SYS_thr_wake = 443;
+pub const SYS_kldunloadf = 444;
+pub const SYS_audit = 445;
+pub const SYS_auditon = 446;
+pub const SYS_getauid = 447;
+pub const SYS_setauid = 448;
+pub const SYS_getaudit = 449;
+pub const SYS_setaudit = 450;
+pub const SYS_getaudit_addr = 451;
+pub const SYS_setaudit_addr = 452;
+pub const SYS_auditctl = 453;
+pub const SYS__umtx_op = 454;
+pub const SYS_thr_new = 455;
+pub const SYS_sigqueue = 456;
+pub const SYS_kmq_open = 457;
+pub const SYS_kmq_setattr = 458;
+pub const SYS_kmq_timedreceive = 459;
+pub const SYS_kmq_timedsend = 460;
+pub const SYS_kmq_notify = 461;
+pub const SYS_kmq_unlink = 462;
+pub const SYS_abort2 = 463;
+pub const SYS_thr_set_name = 464;
+pub const SYS_aio_fsync = 465;
+pub const SYS_rtprio_thread = 466;
+pub const SYS_sctp_peeloff = 471;
+pub const SYS_sctp_generic_sendmsg = 472;
+pub const SYS_sctp_generic_sendmsg_iov = 473;
+pub const SYS_sctp_generic_recvmsg = 474;
+pub const SYS_pread = 475;
+pub const SYS_pwrite = 476;
+pub const SYS_mmap = 477;
+pub const SYS_lseek = 478;
+pub const SYS_truncate = 479;
+pub const SYS_ftruncate = 480;
+pub const SYS_thr_kill2 = 481;
+pub const SYS_shm_open = 482;
+pub const SYS_shm_unlink = 483;
+pub const SYS_cpuset = 484;
+pub const SYS_cpuset_setid = 485;
+pub const SYS_cpuset_getid = 486;
+pub const SYS_cpuset_getaffinity = 487;
+pub const SYS_cpuset_setaffinity = 488;
+pub const SYS_faccessat = 489;
+pub const SYS_fchmodat = 490;
+pub const SYS_fchownat = 491;
+pub const SYS_fexecve = 492;
+pub const SYS_freebsd11_fstatat = 493;
+pub const SYS_futimesat = 494;
+pub const SYS_linkat = 495;
+pub const SYS_mkdirat = 496;
+pub const SYS_mkfifoat = 497;
+pub const SYS_freebsd11_mknodat = 498;
+pub const SYS_openat = 499;
+pub const SYS_readlinkat = 500;
+pub const SYS_renameat = 501;
+pub const SYS_symlinkat = 502;
+pub const SYS_unlinkat = 503;
+pub const SYS_posix_openpt = 504;
+pub const SYS_gssd_syscall = 505;
+pub const SYS_jail_get = 506;
+pub const SYS_jail_set = 507;
+pub const SYS_jail_remove = 508;
+pub const SYS_closefrom = 509;
+pub const SYS___semctl = 510;
+pub const SYS_msgctl = 511;
+pub const SYS_shmctl = 512;
+pub const SYS_lpathconf = 513;
+// 514 is obsolete cap_new
+pub const SYS___cap_rights_get = 515;
+pub const SYS_cap_enter = 516;
+pub const SYS_cap_getmode = 517;
+pub const SYS_pdfork = 518;
+pub const SYS_pdkill = 519;
+pub const SYS_pdgetpid = 520;
+pub const SYS_pselect = 522;
+pub const SYS_getloginclass = 523;
+pub const SYS_setloginclass = 524;
+pub const SYS_rctl_get_racct = 525;
+pub const SYS_rctl_get_rules = 526;
+pub const SYS_rctl_get_limits = 527;
+pub const SYS_rctl_add_rule = 528;
+pub const SYS_rctl_remove_rule = 529;
+pub const SYS_posix_fallocate = 530;
+pub const SYS_posix_fadvise = 531;
+pub const SYS_wait6 = 532;
+pub const SYS_cap_rights_limit = 533;
+pub const SYS_cap_ioctls_limit = 534;
+pub const SYS_cap_ioctls_get = 535;
+pub const SYS_cap_fcntls_limit = 536;
+pub const SYS_cap_fcntls_get = 537;
+pub const SYS_bindat = 538;
+pub const SYS_connectat = 539;
+pub const SYS_chflagsat = 540;
+pub const SYS_accept4 = 541;
+pub const SYS_pipe2 = 542;
+pub const SYS_aio_mlock = 543;
+pub const SYS_procctl = 544;
+pub const SYS_ppoll = 545;
+pub const SYS_futimens = 546;
+pub const SYS_utimensat = 547;
+pub const SYS_numa_getaffinity = 548;
+pub const SYS_numa_setaffinity = 549;
+pub const SYS_fdatasync = 550;
+pub const SYS_fstat = 551;
+pub const SYS_fstatat = 552;
+pub const SYS_fhstat = 553;
+pub const SYS_getdirentries = 554;
+pub const SYS_statfs = 555;
+pub const SYS_fstatfs = 556;
+pub const SYS_getfsstat = 557;
+pub const SYS_fhstatfs = 558;
+pub const SYS_mknodat = 559;
+pub const SYS_kevent = 560;
+pub const SYS_MAXSYSCALL = 561;
+
+// From here
+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 = 0o200000;
+pub const O_NOFOLLOW  = 0o400000;
+pub const O_CLOEXEC  = 0o2000000;
+
+pub const O_ASYNC      = 0o20000;
+pub const O_DIRECT     = 0o40000;
+pub const O_LARGEFILE = 0o100000;
+pub const O_NOATIME  = 0o1000000;
+pub const O_PATH    = 0o10000000;
+pub const O_TMPFILE = 0o20200000;
+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 inline fn syscall0(number: usize) -> usize {
+    asm volatile ("int $0x80"
+        : [ret] "={eax}" (-> usize)
+        : [number] "{eax}" (number))
+}
+
+pub inline fn syscall1(number: usize, arg1: usize) -> usize {
+    asm volatile ("int $0x80"
+        : [ret] "={eax}" (-> usize)
+        : [number] "{eax}" (number),
+            [arg1] "{ebx}" (arg1))
+}
+
+pub inline fn syscall2(number: usize, arg1: usize, arg2: usize) -> usize {
+    asm volatile ("int $0x80"
+        : [ret] "={eax}" (-> usize)
+        : [number] "{eax}" (number),
+            [arg1] "{ebx}" (arg1),
+            [arg2] "{ecx}" (arg2))
+}
+
+pub inline fn syscall3(number: usize, arg1: usize, arg2: usize, arg3: usize) -> usize {
+    asm volatile ("int $0x80"
+        : [ret] "={eax}" (-> usize)
+        : [number] "{eax}" (number),
+            [arg1] "{ebx}" (arg1),
+            [arg2] "{ecx}" (arg2),
+            [arg3] "{edx}" (arg3))
+}
+
+pub inline fn syscall4(number: usize, arg1: usize, arg2: usize, arg3: usize, arg4: usize) -> usize {
+    asm volatile ("int $0x80"
+        : [ret] "={eax}" (-> usize)
+        : [number] "{eax}" (number),
+            [arg1] "{ebx}" (arg1),
+            [arg2] "{ecx}" (arg2),
+            [arg3] "{edx}" (arg3),
+            [arg4] "{esi}" (arg4))
+}
+
+pub inline fn syscall5(number: usize, arg1: usize, arg2: usize, arg3: usize,
+    arg4: usize, arg5: usize) -> usize
+{
+    asm volatile ("int $0x80"
+        : [ret] "={eax}" (-> usize)
+        : [number] "{eax}" (number),
+            [arg1] "{ebx}" (arg1),
+            [arg2] "{ecx}" (arg2),
+            [arg3] "{edx}" (arg3),
+            [arg4] "{esi}" (arg4),
+            [arg5] "{edi}" (arg5))
+}
+
+pub inline fn syscall6(number: usize, arg1: usize, arg2: usize, arg3: usize,
+    arg4: usize, arg5: usize, arg6: usize) -> usize
+{
+    asm volatile ("int $0x80"
+        : [ret] "={eax}" (-> usize)
+        : [number] "{eax}" (number),
+            [arg1] "{ebx}" (arg1),
+            [arg2] "{ecx}" (arg2),
+            [arg3] "{edx}" (arg3),
+            [arg4] "{esi}" (arg4),
+            [arg5] "{edi}" (arg5),
+            [arg6] "{ebp}" (arg6))
+}
+
+pub nakedcc fn restore() {
+    asm volatile (
+        \\popl %%eax
+        \\movl $119, %%eax
+        \\int $0x80
+        :
+        :
+        : "rcx", "r11")
+}
+
+pub nakedcc fn restore_rt() {
+    asm volatile ("int $0x80"
+        :
+        : [number] "{eax}" (usize(SYS_rt_sigreturn))
+        : "rcx", "r11")
+}
+
+export struct msghdr {
+    msg_name: &u8,
+    msg_namelen: socklen_t,
+    msg_iov: &iovec,
+    msg_iovlen: i32,
+    msg_control: &u8,
+    msg_controllen: socklen_t,
+    msg_flags: i32,
+}

std/os/freebsd_x86_64.zig

@@ -0,0 +1,637 @@
+const freebsd = @import("freebsd.zig");
+const socklen_t = freebsd.socklen_t;
+const iovec = freebsd.iovec;
+
+pub const SYS_syscall = 0;
+pub const SYS_exit = 1;
+pub const SYS_fork = 2;
+pub const SYS_read = 3;
+pub const SYS_write = 4;
+pub const SYS_open = 5;
+pub const SYS_close = 6;
+pub const SYS_wait4 = 7;
+// 8 is old creat
+pub const SYS_link = 9;
+pub const SYS_unlink = 10;
+// 11 is obsolete execv
+pub const SYS_chdir = 12;
+pub const SYS_fchdir = 13;
+pub const SYS_freebsd11_mknod = 14;
+pub const SYS_chmod = 15;
+pub const SYS_chown = 16;
+pub const SYS_break = 17;
+// 18 is freebsd4 getfsstat
+// 19 is old lseek
+pub const SYS_getpid = 20;
+pub const SYS_mount = 21;
+pub const SYS_unmount = 22;
+pub const SYS_setuid = 23;
+pub const SYS_getuid = 24;
+pub const SYS_geteuid = 25;
+pub const SYS_ptrace = 26;
+pub const SYS_recvmsg = 27;
+pub const SYS_sendmsg = 28;
+pub const SYS_recvfrom = 29;
+pub const SYS_accept = 30;
+pub const SYS_getpeername = 31;
+pub const SYS_getsockname = 32;
+pub const SYS_access = 33;
+pub const SYS_chflags = 34;
+pub const SYS_fchflags = 35;
+pub const SYS_sync = 36;
+pub const SYS_kill = 37;
+// 38 is old stat
+pub const SYS_getppid = 39;
+// 40 is old lstat
+pub const SYS_dup = 41;
+pub const SYS_freebsd10_pipe = 42;
+pub const SYS_getegid = 43;
+pub const SYS_profil = 44;
+pub const SYS_ktrace = 45;
+// 46 is old sigaction
+pub const SYS_getgid = 47;
+// 48 is old sigprocmask
+pub const SYS_getlogin = 49;
+pub const SYS_setlogin = 50;
+pub const SYS_acct = 51;
+// 52 is old sigpending
+pub const SYS_sigaltstack = 53;
+pub const SYS_ioctl = 54;
+pub const SYS_reboot = 55;
+pub const SYS_revoke = 56;
+pub const SYS_symlink = 57;
+pub const SYS_readlink = 58;
+pub const SYS_execve = 59;
+pub const SYS_umask = 60;
+pub const SYS_chroot = 61;
+// 62 is old fstat
+// 63 is old getkerninfo
+// 64 is old getpagesize
+pub const SYS_msync = 65;
+pub const SYS_vfork = 66;
+// 67 is obsolete vread
+// 68 is obsolete vwrite
+pub const SYS_sbrk = 69;
+pub const SYS_sstk = 70;
+// 71 is old mmap
+pub const SYS_vadvise = 72;
+pub const SYS_munmap = 73;
+pub const SYS_mprotect = 74;
+pub const SYS_madvise = 75;
+// 76 is obsolete vhangup
+// 77 is obsolete vlimit
+pub const SYS_mincore = 78;
+pub const SYS_getgroups = 79;
+pub const SYS_setgroups = 80;
+pub const SYS_getpgrp = 81;
+pub const SYS_setpgid = 82;
+pub const SYS_setitimer = 83;
+// 84 is old wait
+pub const SYS_swapon = 85;
+pub const SYS_getitimer = 86;
+// 87 is old gethostname
+// 88 is old sethostname
+pub const SYS_getdtablesize = 89;
+pub const SYS_dup2 = 90;
+pub const SYS_fcntl = 92;
+pub const SYS_select = 93;
+pub const SYS_fsync = 95;
+pub const SYS_setpriority = 96;
+pub const SYS_socket = 97;
+pub const SYS_connect = 98;
+// 99 is old accept
+pub const SYS_getpriority = 100;
+// 101 is old send
+// 102 is old recv
+// 103 is old sigreturn
+pub const SYS_bind = 104;
+pub const SYS_setsockopt = 105;
+pub const SYS_listen = 106;
+// 107 is obsolete vtimes
+// 108 is old sigvec
+// 109 is old sigblock
+// 110 is old sigsetmask
+// 111 is old sigsuspend
+// 112 is old sigstack
+// 113 is old recvmsg
+// 114 is old sendmsg
+// 115 is obsolete vtrace
+pub const SYS_gettimeofday = 116;
+pub const SYS_getrusage = 117;
+pub const SYS_getsockopt = 118;
+pub const SYS_readv = 120;
+pub const SYS_writev = 121;
+pub const SYS_settimeofday = 122;
+pub const SYS_fchown = 123;
+pub const SYS_fchmod = 124;
+// 125 is old recvfrom
+pub const SYS_setreuid = 126;
+pub const SYS_setregid = 127;
+pub const SYS_rename = 128;
+// 129 is old truncate
+// 130 is old ftruncate
+pub const SYS_flock = 131;
+pub const SYS_mkfifo = 132;
+pub const SYS_sendto = 133;
+pub const SYS_shutdown = 134;
+pub const SYS_socketpair = 135;
+pub const SYS_mkdir = 136;
+pub const SYS_rmdir = 137;
+pub const SYS_utimes = 138;
+// 139 is obsolete 4.2 sigreturn
+pub const SYS_adjtime = 140;
+// 141 is old getpeername
+// 142 is old gethostid
+// 143 is old sethostid
+// 144 is old getrlimit
+// 145 is old setrlimit
+// 146 is old killpg
+pub const SYS_setsid = 147;
+pub const SYS_quotactl = 148;
+// 149 is old quota
+// 150 is old getsockname
+pub const SYS_nlm_syscall = 154;
+pub const SYS_nfssvc = 155;
+// 156 is old getdirentries
+// 157 is freebsd4 statfs
+// 158 is freebsd4 fstatfs
+pub const SYS_lgetfh = 160;
+pub const SYS_getfh = 161;
+// 162 is freebsd4 getdomainname
+// 163 is freebsd4 setdomainname
+// 164 is freebsd4 uname
+pub const SYS_sysarch = 165;
+pub const SYS_rtprio = 166;
+pub const SYS_semsys = 169;
+pub const SYS_msgsys = 170;
+pub const SYS_shmsys = 171;
+// 173 is freebsd6 pread
+// 174 is freebsd6 pwrite
+pub const SYS_setfib = 175;
+pub const SYS_ntp_adjtime = 176;
+pub const SYS_setgid = 181;
+pub const SYS_setegid = 182;
+pub const SYS_seteuid = 183;
+pub const SYS_freebsd11_stat = 188;
+pub const SYS_freebsd11_fstat = 189;
+pub const SYS_freebsd11_lstat = 190;
+pub const SYS_pathconf = 191;
+pub const SYS_fpathconf = 192;
+pub const SYS_getrlimit = 194;
+pub const SYS_setrlimit = 195;
+pub const SYS_freebsd11_getdirentries = 196;
+// 197 is freebsd6 mmap
+pub const SYS___syscall = 198;
+// 199 is freebsd6 lseek
+// 200 is freebsd6 truncate
+// 201 is freebsd6 ftruncate
+pub const SYS___sysctl = 202;
+pub const SYS_mlock = 203;
+pub const SYS_munlock = 204;
+pub const SYS_undelete = 205;
+pub const SYS_futimes = 206;
+pub const SYS_getpgid = 207;
+pub const SYS_poll = 209;
+pub const SYS_freebsd7___semctl = 220;
+pub const SYS_semget = 221;
+pub const SYS_semop = 222;
+pub const SYS_freebsd7_msgctl = 224;
+pub const SYS_msgget = 225;
+pub const SYS_msgsnd = 226;
+pub const SYS_msgrcv = 227;
+pub const SYS_shmat = 228;
+pub const SYS_freebsd7_shmctl = 229;
+pub const SYS_shmdt = 230;
+pub const SYS_shmget = 231;
+pub const SYS_clock_gettime = 232;
+pub const SYS_clock_settime = 233;
+pub const SYS_clock_getres = 234;
+pub const SYS_ktimer_create = 235;
+pub const SYS_ktimer_delete = 236;
+pub const SYS_ktimer_settime = 237;
+pub const SYS_ktimer_gettime = 238;
+pub const SYS_ktimer_getoverrun = 239;
+pub const SYS_nanosleep = 240;
+pub const SYS_ffclock_getcounter = 241;
+pub const SYS_ffclock_setestimate = 242;
+pub const SYS_ffclock_getestimate = 243;
+pub const SYS_clock_nanosleep = 244;
+pub const SYS_clock_getcpuclockid2 = 247;
+pub const SYS_ntp_gettime = 248;
+pub const SYS_minherit = 250;
+pub const SYS_rfork = 251;
+// 252 is obsolete openbsd_poll
+pub const SYS_issetugid = 253;
+pub const SYS_lchown = 254;
+pub const SYS_aio_read = 255;
+pub const SYS_aio_write = 256;
+pub const SYS_lio_listio = 257;
+pub const SYS_freebsd11_getdents = 272;
+pub const SYS_lchmod = 274;
+pub const SYS_netbsd_lchown = 275;
+pub const SYS_lutimes = 276;
+pub const SYS_netbsd_msync = 277;
+pub const SYS_freebsd11_nstat = 278;
+pub const SYS_freebsd11_nfstat = 279;
+pub const SYS_freebsd11_nlstat = 280;
+pub const SYS_preadv = 289;
+pub const SYS_pwritev = 290;
+// 297 is freebsd4 fhstatfs
+pub const SYS_fhopen = 298;
+pub const SYS_freebsd11_fhstat = 299;
+pub const SYS_modnext = 300;
+pub const SYS_modstat = 301;
+pub const SYS_modfnext = 302;
+pub const SYS_modfind = 303;
+pub const SYS_kldload = 304;
+pub const SYS_kldunload = 305;
+pub const SYS_kldfind = 306;
+pub const SYS_kldnext = 307;
+pub const SYS_kldstat = 308;
+pub const SYS_kldfirstmod = 309;
+pub const SYS_getsid = 310;
+pub const SYS_setresuid = 311;
+pub const SYS_setresgid = 312;
+// 313 is obsolete signanosleep
+pub const SYS_aio_return = 314;
+pub const SYS_aio_suspend = 315;
+pub const SYS_aio_cancel = 316;
+pub const SYS_aio_error = 317;
+// 318 is freebsd6 aio_read
+// 319 is freebsd6 aio_write
+// 320 is freebsd6 lio_listio
+pub const SYS_yield = 321;
+// 322 is obsolete thr_sleep
+// 323 is obsolete thr_wakeup
+pub const SYS_mlockall = 324;
+pub const SYS_munlockall = 325;
+pub const SYS___getcwd = 326;
+pub const SYS_sched_setparam = 327;
+pub const SYS_sched_getparam = 328;
+pub const SYS_sched_setscheduler = 329;
+pub const SYS_sched_getscheduler = 330;
+pub const SYS_sched_yield = 331;
+pub const SYS_sched_get_priority_max = 332;
+pub const SYS_sched_get_priority_min = 333;
+pub const SYS_sched_rr_get_interval = 334;
+pub const SYS_utrace = 335;
+// 336 is freebsd4 sendfile
+pub const SYS_kldsym = 337;
+pub const SYS_jail = 338;
+pub const SYS_nnpfs_syscall = 339;
+pub const SYS_sigprocmask = 340;
+pub const SYS_sigsuspend = 341;
+// 342 is freebsd4 sigaction
+pub const SYS_sigpending = 343;
+// 344 is freebsd4 sigreturn
+pub const SYS_sigtimedwait = 345;
+pub const SYS_sigwaitinfo = 346;
+pub const SYS___acl_get_file = 347;
+pub const SYS___acl_set_file = 348;
+pub const SYS___acl_get_fd = 349;
+pub const SYS___acl_set_fd = 350;
+pub const SYS___acl_delete_file = 351;
+pub const SYS___acl_delete_fd = 352;
+pub const SYS___acl_aclcheck_file = 353;
+pub const SYS___acl_aclcheck_fd = 354;
+pub const SYS_extattrctl = 355;
+pub const SYS_extattr_set_file = 356;
+pub const SYS_extattr_get_file = 357;
+pub const SYS_extattr_delete_file = 358;
+pub const SYS_aio_waitcomplete = 359;
+pub const SYS_getresuid = 360;
+pub const SYS_getresgid = 361;
+pub const SYS_kqueue = 362;
+pub const SYS_freebsd11_kevent = 363;
+pub const SYS_extattr_set_fd = 371;
+pub const SYS_extattr_get_fd = 372;
+pub const SYS_extattr_delete_fd = 373;
+pub const SYS___setugid = 374;
+pub const SYS_eaccess = 376;
+pub const SYS_afs3_syscall = 377;
+pub const SYS_nmount = 378;
+pub const SYS___mac_get_proc = 384;
+pub const SYS___mac_set_proc = 385;
+pub const SYS___mac_get_fd = 386;
+pub const SYS___mac_get_file = 387;
+pub const SYS___mac_set_fd = 388;
+pub const SYS___mac_set_file = 389;
+pub const SYS_kenv = 390;
+pub const SYS_lchflags = 391;
+pub const SYS_uuidgen = 392;
+pub const SYS_sendfile = 393;
+pub const SYS_mac_syscall = 394;
+pub const SYS_freebsd11_getfsstat = 395;
+pub const SYS_freebsd11_statfs = 396;
+pub const SYS_freebsd11_fstatfs = 397;
+pub const SYS_freebsd11_fhstatfs = 398;
+pub const SYS_ksem_close = 400;
+pub const SYS_ksem_post = 401;
+pub const SYS_ksem_wait = 402;
+pub const SYS_ksem_trywait = 403;
+pub const SYS_ksem_init = 404;
+pub const SYS_ksem_open = 405;
+pub const SYS_ksem_unlink = 406;
+pub const SYS_ksem_getvalue = 407;
+pub const SYS_ksem_destroy = 408;
+pub const SYS___mac_get_pid = 409;
+pub const SYS___mac_get_link = 410;
+pub const SYS___mac_set_link = 411;
+pub const SYS_extattr_set_link = 412;
+pub const SYS_extattr_get_link = 413;
+pub const SYS_extattr_delete_link = 414;
+pub const SYS___mac_execve = 415;
+pub const SYS_sigaction = 416;
+pub const SYS_sigreturn = 417;
+pub const SYS_getcontext = 421;
+pub const SYS_setcontext = 422;
+pub const SYS_swapcontext = 423;
+pub const SYS_swapoff = 424;
+pub const SYS___acl_get_link = 425;
+pub const SYS___acl_set_link = 426;
+pub const SYS___acl_delete_link = 427;
+pub const SYS___acl_aclcheck_link = 428;
+pub const SYS_sigwait = 429;
+pub const SYS_thr_create = 430;
+pub const SYS_thr_exit = 431;
+pub const SYS_thr_self = 432;
+pub const SYS_thr_kill = 433;
+pub const SYS_jail_attach = 436;
+pub const SYS_extattr_list_fd = 437;
+pub const SYS_extattr_list_file = 438;
+pub const SYS_extattr_list_link = 439;
+pub const SYS_ksem_timedwait = 441;
+pub const SYS_thr_suspend = 442;
+pub const SYS_thr_wake = 443;
+pub const SYS_kldunloadf = 444;
+pub const SYS_audit = 445;
+pub const SYS_auditon = 446;
+pub const SYS_getauid = 447;
+pub const SYS_setauid = 448;
+pub const SYS_getaudit = 449;
+pub const SYS_setaudit = 450;
+pub const SYS_getaudit_addr = 451;
+pub const SYS_setaudit_addr = 452;
+pub const SYS_auditctl = 453;
+pub const SYS__umtx_op = 454;
+pub const SYS_thr_new = 455;
+pub const SYS_sigqueue = 456;
+pub const SYS_kmq_open = 457;
+pub const SYS_kmq_setattr = 458;
+pub const SYS_kmq_timedreceive = 459;
+pub const SYS_kmq_timedsend = 460;
+pub const SYS_kmq_notify = 461;
+pub const SYS_kmq_unlink = 462;
+pub const SYS_abort2 = 463;
+pub const SYS_thr_set_name = 464;
+pub const SYS_aio_fsync = 465;
+pub const SYS_rtprio_thread = 466;
+pub const SYS_sctp_peeloff = 471;
+pub const SYS_sctp_generic_sendmsg = 472;
+pub const SYS_sctp_generic_sendmsg_iov = 473;
+pub const SYS_sctp_generic_recvmsg = 474;
+pub const SYS_pread = 475;
+pub const SYS_pwrite = 476;
+pub const SYS_mmap = 477;
+pub const SYS_lseek = 478;
+pub const SYS_truncate = 479;
+pub const SYS_ftruncate = 480;
+pub const SYS_thr_kill2 = 481;
+pub const SYS_shm_open = 482;
+pub const SYS_shm_unlink = 483;
+pub const SYS_cpuset = 484;
+pub const SYS_cpuset_setid = 485;
+pub const SYS_cpuset_getid = 486;
+pub const SYS_cpuset_getaffinity = 487;
+pub const SYS_cpuset_setaffinity = 488;
+pub const SYS_faccessat = 489;
+pub const SYS_fchmodat = 490;
+pub const SYS_fchownat = 491;
+pub const SYS_fexecve = 492;
+pub const SYS_freebsd11_fstatat = 493;
+pub const SYS_futimesat = 494;
+pub const SYS_linkat = 495;
+pub const SYS_mkdirat = 496;
+pub const SYS_mkfifoat = 497;
+pub const SYS_freebsd11_mknodat = 498;
+pub const SYS_openat = 499;
+pub const SYS_readlinkat = 500;
+pub const SYS_renameat = 501;
+pub const SYS_symlinkat = 502;
+pub const SYS_unlinkat = 503;
+pub const SYS_posix_openpt = 504;
+pub const SYS_gssd_syscall = 505;
+pub const SYS_jail_get = 506;
+pub const SYS_jail_set = 507;
+pub const SYS_jail_remove = 508;
+pub const SYS_closefrom = 509;
+pub const SYS___semctl = 510;
+pub const SYS_msgctl = 511;
+pub const SYS_shmctl = 512;
+pub const SYS_lpathconf = 513;
+// 514 is obsolete cap_new
+pub const SYS___cap_rights_get = 515;
+pub const SYS_cap_enter = 516;
+pub const SYS_cap_getmode = 517;
+pub const SYS_pdfork = 518;
+pub const SYS_pdkill = 519;
+pub const SYS_pdgetpid = 520;
+pub const SYS_pselect = 522;
+pub const SYS_getloginclass = 523;
+pub const SYS_setloginclass = 524;
+pub const SYS_rctl_get_racct = 525;
+pub const SYS_rctl_get_rules = 526;
+pub const SYS_rctl_get_limits = 527;
+pub const SYS_rctl_add_rule = 528;
+pub const SYS_rctl_remove_rule = 529;
+pub const SYS_posix_fallocate = 530;
+pub const SYS_posix_fadvise = 531;
+pub const SYS_wait6 = 532;
+pub const SYS_cap_rights_limit = 533;
+pub const SYS_cap_ioctls_limit = 534;
+pub const SYS_cap_ioctls_get = 535;
+pub const SYS_cap_fcntls_limit = 536;
+pub const SYS_cap_fcntls_get = 537;
+pub const SYS_bindat = 538;
+pub const SYS_connectat = 539;
+pub const SYS_chflagsat = 540;
+pub const SYS_accept4 = 541;
+pub const SYS_pipe2 = 542;
+pub const SYS_aio_mlock = 543;
+pub const SYS_procctl = 544;
+pub const SYS_ppoll = 545;
+pub const SYS_futimens = 546;
+pub const SYS_utimensat = 547;
+pub const SYS_numa_getaffinity = 548;
+pub const SYS_numa_setaffinity = 549;
+pub const SYS_fdatasync = 550;
+pub const SYS_fstat = 551;
+pub const SYS_fstatat = 552;
+pub const SYS_fhstat = 553;
+pub const SYS_getdirentries = 554;
+pub const SYS_statfs = 555;
+pub const SYS_fstatfs = 556;
+pub const SYS_getfsstat = 557;
+pub const SYS_fhstatfs = 558;
+pub const SYS_mknodat = 559;
+pub const SYS_kevent = 560;
+pub const SYS_MAXSYSCALL = 561;
+
+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 = 0o200000;
+pub const O_NOFOLLOW =  0o400000;
+pub const O_CLOEXEC =  0o2000000;
+
+pub const O_ASYNC      = 0o20000;
+pub const O_DIRECT     = 0o40000;
+pub const O_LARGEFILE       =  0;
+pub const O_NOATIME  = 0o1000000;
+pub const O_PATH    = 0o10000000;
+pub const O_TMPFILE = 0o20200000;
+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 = 5;
+pub const F_SETLK = 6;
+pub const F_SETLKW = 7;
+
+pub const F_SETOWN_EX = 15;
+pub const F_GETOWN_EX = 16;
+
+pub const F_GETOWNER_UIDS = 17;
+
+pub fn syscall0(number: usize) -> usize {
+    asm volatile ("syscall"
+        : [ret] "={rax}" (-> usize)
+        : [number] "{rax}" (number)
+        : "rcx", "r11")
+}
+
+pub fn syscall1(number: usize, arg1: usize) -> usize {
+    asm volatile ("syscall"
+        : [ret] "={rax}" (-> usize)
+        : [number] "{rax}" (number),
+            [arg1] "{rdi}" (arg1)
+        : "rcx", "r11")
+}
+
+pub fn syscall2(number: usize, arg1: usize, arg2: usize) -> usize {
+    asm volatile ("syscall"
+        : [ret] "={rax}" (-> usize)
+        : [number] "{rax}" (number),
+            [arg1] "{rdi}" (arg1),
+            [arg2] "{rsi}" (arg2)
+        : "rcx", "r11")
+}
+
+pub fn syscall3(number: usize, arg1: usize, arg2: usize, arg3: usize) -> usize {
+    asm volatile ("syscall"
+        : [ret] "={rax}" (-> usize)
+        : [number] "{rax}" (number),
+            [arg1] "{rdi}" (arg1),
+            [arg2] "{rsi}" (arg2),
+            [arg3] "{rdx}" (arg3)
+        : "rcx", "r11")
+}
+
+pub fn syscall4(number: usize, arg1: usize, arg2: usize, arg3: usize, arg4: usize) -> usize {
+    asm volatile ("syscall"
+        : [ret] "={rax}" (-> usize)
+        : [number] "{rax}" (number),
+            [arg1] "{rdi}" (arg1),
+            [arg2] "{rsi}" (arg2),
+            [arg3] "{rdx}" (arg3),
+            [arg4] "{r10}" (arg4)
+        : "rcx", "r11")
+}
+
+pub fn syscall5(number: usize, arg1: usize, arg2: usize, arg3: usize, arg4: usize, arg5: usize) -> usize {
+    asm volatile ("syscall"
+        : [ret] "={rax}" (-> usize)
+        : [number] "{rax}" (number),
+            [arg1] "{rdi}" (arg1),
+            [arg2] "{rsi}" (arg2),
+            [arg3] "{rdx}" (arg3),
+            [arg4] "{r10}" (arg4),
+            [arg5] "{r8}" (arg5)
+        : "rcx", "r11")
+}
+
+pub fn syscall6(number: usize, arg1: usize, arg2: usize, arg3: usize, arg4: usize,
+    arg5: usize, arg6: usize) -> usize
+{
+    asm volatile ("syscall"
+        : [ret] "={rax}" (-> usize)
+        : [number] "{rax}" (number),
+            [arg1] "{rdi}" (arg1),
+            [arg2] "{rsi}" (arg2),
+            [arg3] "{rdx}" (arg3),
+            [arg4] "{r10}" (arg4),
+            [arg5] "{r8}" (arg5),
+            [arg6] "{r9}" (arg6)
+        : "rcx", "r11")
+}
+
+pub nakedcc fn restore_rt() {
+    asm volatile ("syscall"
+        :
+        : [number] "{rax}" (usize(SYS_rt_sigreturn))
+        : "rcx", "r11")
+}
+
+
+pub const msghdr = extern struct {
+    msg_name: &u8,
+    msg_namelen: socklen_t,
+    msg_iov: &iovec,
+    msg_iovlen: i32,
+    __pad1: i32,
+    msg_control: &u8,
+    msg_controllen: socklen_t,
+    __pad2: socklen_t,
+    msg_flags: i32,
+};
+
+/// Renamed to Stat to not conflict with the stat function.
+pub const Stat = extern struct {
+    dev: u64,
+    ino: u64,
+    nlink: usize,
+
+    mode: u32,
+    uid: u32,
+    gid: u32,
+    __pad0: u32,
+    rdev: u64,
+    size: i64,
+    blksize: isize,
+    blocks: i64,
+
+    atim: timespec,
+    mtim: timespec,
+    ctim: timespec,
+    __unused: [3]isize,
+};
+
+pub const timespec = extern struct {
+    tv_sec: isize,
+    tv_nsec: isize,
+};

std/os/get_user_id.zig

@@ -11,7 +11,7 @@ pub const UserInfo = struct.{
 /// POSIX function which gets a uid from username.
 pub fn getUserInfo(name: []const u8) !UserInfo {
     return switch (builtin.os) {
-        Os.linux, Os.macosx, Os.ios => posixGetUserInfo(name),
+        Os.linux, Os.macosx, Os.ios, Os.freebsd => posixGetUserInfo(name),
         else => @compileError("Unsupported OS"),
     };
 }

std/os/index.zig

@@ -24,10 +24,12 @@ test "std.os" {
 pub const windows = @import("windows/index.zig");
 pub const darwin = @import("darwin.zig");
 pub const linux = @import("linux/index.zig");
+pub const freebsd = @import("freebsd.zig");
 pub const zen = @import("zen.zig");
 pub const posix = switch (builtin.os) {
     Os.linux => linux,
     Os.macosx, Os.ios => darwin,
+    Os.freebsd => freebsd,
     Os.zen => zen,
     else => @compileError("Unsupported OS"),
 };
@@ -174,7 +176,7 @@ pub fn abort() noreturn {
         c.abort();
     }
     switch (builtin.os) {
-        Os.linux, Os.macosx, Os.ios => {
+        Os.linux, Os.macosx, Os.ios, Os.freebsd => {
             _ = posix.raise(posix.SIGABRT);
             _ = posix.raise(posix.SIGKILL);
             while (true) {}
@@ -196,7 +198,7 @@ pub fn exit(status: u8) noreturn {
         c.exit(status);
     }
     switch (builtin.os) {
-        Os.linux, Os.macosx, Os.ios => {
+        Os.linux, Os.macosx, Os.ios, Os.freebsd => {
             posix.exit(status);
         },
         Os.windows => {

std/os/path.zig

@@ -1161,7 +1161,7 @@ pub fn realC(out_buffer: *[os.MAX_PATH_BYTES]u8, pathname: [*]const u8) RealErro
             const pathname_w = try windows_util.cStrToPrefixedFileW(pathname);
             return realW(out_buffer, pathname_w);
         },
-        Os.macosx, Os.ios => {
+        Os.macosx, Os.ios, Os.freebsd => {
             // TODO instead of calling the libc function here, port the implementation to Zig
             const err = posix.getErrno(posix.realpath(pathname, out_buffer));
             switch (err) {
@@ -1202,7 +1202,7 @@ pub fn real(out_buffer: *[os.MAX_PATH_BYTES]u8, pathname: []const u8) RealError!
             const pathname_w = try windows_util.sliceToPrefixedFileW(pathname);
             return realW(out_buffer, &pathname_w);
         },
-        Os.macosx, Os.ios, Os.linux => {
+        Os.macosx, Os.ios, Os.linux, Os.freebsd => {
             const pathname_c = try os.toPosixPath(pathname);
             return realC(out_buffer, &pathname_c);
         },