1 files changed, 58 insertions, 0 deletions
diff --git a/lib/std/c/darwin.zig b/lib/std/c/darwin.zig
new file mode 100644
index 0000000000..f2e8120a0e
--- /dev/null
+++ b/lib/std/c/darwin.zig
@@ -0,0 +1,58 @@
+const std = @import("../std.zig");
+const assert = std.debug.assert;
+const builtin = @import("builtin");
+const macho = std.macho;
+
+usingnamespace @import("../os/bits.zig");
+
+extern "c" fn __error() *c_int;
+pub extern "c" fn _NSGetExecutablePath(buf: [*]u8, bufsize: *u32) c_int;
+pub extern "c" fn _dyld_get_image_header(image_index: u32) ?*mach_header;
+
+pub extern "c" fn __getdirentries64(fd: c_int, buf_ptr: [*]u8, buf_len: usize, basep: *i64) isize;
+
+pub extern "c" fn mach_absolute_time() u64;
+pub extern "c" fn mach_timebase_info(tinfo: ?*mach_timebase_info_data) void;
+
+pub extern "c" fn kevent64(
+    kq: c_int,
+    changelist: [*]const kevent64_s,
+    nchanges: c_int,
+    eventlist: [*]kevent64_s,
+    nevents: c_int,
+    flags: c_uint,
+    timeout: ?*const timespec,
+) c_int;
+
+const mach_hdr = if (@sizeOf(usize) == 8) mach_header_64 else mach_header;
+
+/// The value of the link editor defined symbol _MH_EXECUTE_SYM is the address
+/// of the mach header in a Mach-O executable file type.  It does not appear in
+/// any file type other than a MH_EXECUTE file type.  The type of the symbol is
+/// absolute as the header is not part of any section.
+/// This symbol is populated when linking the system's libc, which is guaranteed
+/// on this operating system. However when building object files or libraries,
+/// the system libc won't be linked until the final executable. So we
+/// export a weak symbol here, to be overridden by the real one.
+pub extern "c" var _mh_execute_header: mach_hdr = undefined;
+comptime {
+    if (std.os.darwin.is_the_target) {
+        @export("_mh_execute_header", _mh_execute_header, .Weak);
+    }
+}
+
+pub const mach_header_64 = macho.mach_header_64;
+pub const mach_header = macho.mach_header;
+
+pub const _errno = __error;
+
+pub extern "c" fn mach_host_self() mach_port_t;
+pub extern "c" fn clock_get_time(clock_serv: clock_serv_t, cur_time: *mach_timespec_t) kern_return_t;
+pub extern "c" fn host_get_clock_service(host: host_t, clock_id: clock_id_t, clock_serv: ?[*]clock_serv_t) kern_return_t;
+pub extern "c" fn mach_port_deallocate(task: ipc_space_t, name: mach_port_name_t) kern_return_t;
+
+pub fn sigaddset(set: *sigset_t, signo: u5) void {
+    set.* |= u32(1) << (signo - 1);
+}
+
+pub extern "c" fn sigaltstack(ss: ?*stack_t, old_ss: ?*stack_t) c_int;