Add definitions for aarch64 apple OSX. (#36)

I got these by running the provided scripts/codegen.sh, with
CODEGEN64 removed.  They seem to match up with the contents of the
resource.h from the SDK.   With these defintions, rlimit now builds
and passes its tests on my M1 laptop.

Closes issue #35.

src/bindings.rs

@@ -132,6 +132,48 @@ pub mod aarch64_unknown_linux_musl {
 #[cfg(all(target_arch = "aarch64", target_os = "linux", target_env = "musl"))]
 pub use self::aarch64_unknown_linux_musl::*;
 
+#[cfg(all(target_arch = "aarch64", target_os = "macos"))]
+pub mod aarch64_apple_darwin {
+    pub const RLIM_INFINITY: u64 = 9223372036854775807;
+    pub const RLIMIT_AS: u8 = 5;
+    pub const RLIMIT_CORE: u8 = 4;
+    pub const RLIMIT_CPU: u8 = 0;
+    pub const RLIMIT_DATA: u8 = 2;
+    pub const RLIMIT_FSIZE: u8 = 1;
+    pub const RLIMIT_KQUEUES: u8 = u8::MAX;
+    pub const RLIMIT_LOCKS: u8 = u8::MAX;
+    pub const RLIMIT_MEMLOCK: u8 = 6;
+    pub const RLIMIT_MSGQUEUE: u8 = u8::MAX;
+    pub const RLIMIT_NICE: u8 = u8::MAX;
+    pub const RLIMIT_NOFILE: u8 = 8;
+    pub const RLIMIT_NOVMON: u8 = u8::MAX;
+    pub const RLIMIT_NPROC: u8 = 7;
+    pub const RLIMIT_NPTS: u8 = u8::MAX;
+    pub const RLIMIT_NTHR: u8 = u8::MAX;
+    pub const RLIMIT_POSIXLOCKS: u8 = u8::MAX;
+    pub const RLIMIT_RSS: u8 = 5;
+    pub const RLIMIT_RTPRIO: u8 = u8::MAX;
+    pub const RLIMIT_RTTIME: u8 = u8::MAX;
+    pub const RLIMIT_SBSIZE: u8 = u8::MAX;
+    pub const RLIMIT_SIGPENDING: u8 = u8::MAX;
+    pub const RLIMIT_STACK: u8 = 3;
+    pub const RLIMIT_SWAP: u8 = u8::MAX;
+    pub const RLIMIT_UMTXP: u8 = u8::MAX;
+    pub const RLIMIT_VMEM: u8 = u8::MAX;
+    pub type rlim_t = u64;
+    #[repr(C)]
+    pub struct rlimit {
+        pub rlim_cur: rlim_t,
+        pub rlim_max: rlim_t,
+    }
+    extern "C" {
+        pub fn getrlimit(resource: u32, rlimit: *mut rlimit) -> i32;
+        pub fn setrlimit(resource: u32, rlimit: *const rlimit) -> i32;
+    }
+}
+#[cfg(all(target_arch = "aarch64", target_os = "macos"))]
+pub use self::aarch64_apple_darwin::*;
+
 #[cfg(all(target_arch = "arm", target_os = "android"))]
 pub mod arm_linux_androideabi {
     pub const RLIM_INFINITY: u64 = u64::MAX;