diff --git a/Cargo.toml b/Cargo.toml
index f3e19312e8b..c157a6518c5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,7 @@
 [workspace]
 resolver = "2"
 members = [
+  "enclave-runner",
   "tokio",
   "tokio-macros",
   "tokio-test",
@@ -14,3 +15,10 @@ members = [
   "tests-build",
   "tests-integration",
 ]
+
+[patch.crates-io]
+mio = { git = "https://github.com/fortanix/mio", branch = "raoul/sgx-port-0.8.9" }
+enclave-runner = { git = "https://github.com/fortanix/rust-sgx", branch = "master" }
+sgxs = { git = "https://github.com/fortanix/rust-sgx", branch = "master" }
+sgx-isa = { git = "https://github.com/fortanix/rust-sgx", branch = "master" }
+sgxs-loaders = { git = "https://github.com/fortanix/rust-sgx", branch = "master" }
diff --git a/benches/Cargo.toml b/benches/Cargo.toml
index e0b162b422e..46fc019bd6b 100644
--- a/benches/Cargo.toml
+++ b/benches/Cargo.toml
@@ -8,11 +8,16 @@ edition = "2021"
 test-util = ["tokio/test-util"]
 
 [dependencies]
-tokio = { version = "1.5.0", path = "../tokio", features = ["full"] }
 criterion = "0.5.1"
 rand = "0.8"
 rand_chacha = "0.3"
 
+[target.'cfg(target_env = "sgx")'.dependencies]
+tokio = { version = "1.5.0", path = "../tokio", features = ["full-sgx"] }
+
+[target.'cfg(not(target_env = "sgx"))'.dependencies]
+tokio = { version = "1.5.0", path = "../tokio", features = ["full"] }
+
 [dev-dependencies]
 tokio-util = { version = "0.7.0", path = "../tokio-util", features = ["full"] }
 tokio-stream = { path = "../tokio-stream" }
diff --git a/ct.sh b/ct.sh
new file mode 100755
index 00000000000..6736f5a4dd8
--- /dev/null
+++ b/ct.sh
@@ -0,0 +1,23 @@
+#!/bin/bash -ex
+repo_root=$(readlink -f $(dirname ${BASH_SOURCE[0]}))
+cd ${repo_root}
+
+source ${repo_root}/ct_env.sh
+
+cargo test
+
+pushd tokio
+cargo test --target x86_64-fortanix-unknown-sgx --features "full-sgx"
+popd
+
+pushd tokio-macros
+cargo test --target x86_64-fortanix-unknown-sgx
+popd
+
+pushd tokio-stream
+cargo test --target x86_64-fortanix-unknown-sgx
+popd
+
+pushd stress-test
+cargo test --target x86_64-fortanix-unknown-sgx
+popd
diff --git a/ct_env.sh b/ct_env.sh
new file mode 100755
index 00000000000..3653206bfb6
--- /dev/null
+++ b/ct_env.sh
@@ -0,0 +1,10 @@
+#!/bin/bash -ex
+repo_root=$(readlink -f $(dirname ${BASH_SOURCE[0]}))
+cd ${repo_root}
+
+# Unfortunately, the `ftxsgx-runner-cargo` application doesn't enable us to point to a runner within the same workspace. We use a hack here by pointing to `enclave-runner` and making sure such an executable exists when running CI
+pushd enclave-runner
+cargo build
+popd
+
+export PATH=${repo_root}/target/debug/:${PATH}
diff --git a/enclave-runner/Cargo.toml b/enclave-runner/Cargo.toml
new file mode 100644
index 00000000000..64b23b25791
--- /dev/null
+++ b/enclave-runner/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "enclave-runner"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies]
+aesm-client = { version = "0.2", features = ["sgxs"] }
+clap = "2.0"
+enclave-runner = "0.5"
+sgxs-loaders = "0.3.0"
diff --git a/enclave-runner/src/main.rs b/enclave-runner/src/main.rs
new file mode 100644
index 00000000000..6042dd0397c
--- /dev/null
+++ b/enclave-runner/src/main.rs
@@ -0,0 +1,51 @@
+use aesm_client::AesmClient;
+use clap::{App, Arg};
+use enclave_runner::EnclaveBuilder;
+
+#[cfg(windows)]
+use sgxs_loaders::enclaveapi::Sgx as IsgxDevice;
+#[cfg(unix)]
+use sgxs_loaders::isgx::Device as IsgxDevice;
+
+fn main() {
+    let args = App::new("runner")
+        .arg(Arg::with_name("file").required(true))
+        .arg(
+            Arg::with_name("enclave-args")
+                .long_help(
+                    "Arguments passed to the enclave. \
+                    Note that this is not an appropriate channel for passing \
+                    secrets or security configurations to the enclave.",
+                )
+                .multiple(true),
+        )
+        .get_matches();
+
+    let file = args.value_of("file").unwrap();
+
+    let mut device = IsgxDevice::new()
+        .expect("failed to open SGX device")
+        .einittoken_provider(AesmClient::new())
+        .build();
+
+    let mut enclave_builder = EnclaveBuilder::new(file.as_ref());
+    if let Err(_) = enclave_builder.coresident_signature() {
+        enclave_builder.dummy_signature();
+    }
+
+    if let Some(enclave_args) = args.values_of("enclave-args") {
+        enclave_builder.args(enclave_args);
+    }
+
+    let enclave = enclave_builder
+        .build(&mut device)
+        .expect("failed to load SGX enclave");
+
+    match enclave.run() {
+        Err(e) => {
+            eprintln!("Error while executing SGX enclave.\n{}", e);
+            std::process::exit(-1)
+        }
+        Ok(()) => {}
+    }
+}
diff --git a/examples/Cargo.toml b/examples/Cargo.toml
index a244fccaca1..2d5dd55b242 100644
--- a/examples/Cargo.toml
+++ b/examples/Cargo.toml
@@ -27,6 +27,12 @@ rand = "0.8.3"
 [target.'cfg(windows)'.dev-dependencies.windows-sys]
 version = "0.48"
 
+[target.'cfg(not(target_env = "sgx"))'.dev-dependencies]
+tokio = { version = "1.0.0", path = "../tokio",features = ["full", "tracing"] }
+
+[target.'cfg(target_env = "sgx")'.dev-dependencies]
+tokio = { version = "1.0.0", path = "../tokio",features = ["full-sgx", "tracing"] }
+
 [[example]]
 name = "chat"
 path = "chat.rs"
diff --git a/stress-test/Cargo.toml b/stress-test/Cargo.toml
index ee7431f096b..2c6529b74df 100644
--- a/stress-test/Cargo.toml
+++ b/stress-test/Cargo.toml
@@ -8,7 +8,12 @@ publish = false
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+
+[target.'cfg(not(target_env = "sgx"))'.dependencies]
 tokio = { path = "../tokio/", features = ["full"] }
 
+[target.'cfg(target_env = "sgx")'.dependencies]
+tokio = { path = "../tokio/", features = ["full-sgx"] }
+
 [dev-dependencies]
 rand = "0.8"
diff --git a/stress-test/examples/simple_echo_tcp.rs b/stress-test/examples/simple_echo_tcp.rs
index 01e545026c5..11df2abbd1e 100644
--- a/stress-test/examples/simple_echo_tcp.rs
+++ b/stress-test/examples/simple_echo_tcp.rs
@@ -3,7 +3,7 @@ use std::{thread::sleep, time::Duration};
 
 use tokio::{
     io::{AsyncReadExt, AsyncWriteExt},
-    net::{TcpListener, TcpSocket},
+    net::{TcpListener, TcpStream},
     runtime::Builder,
     sync::oneshot,
 };
@@ -30,9 +30,7 @@ fn main() {
     let (tx, mut rx) = oneshot::channel();
 
     rt2.spawn(async {
-        let addr = TCP_ENDPOINT.parse().unwrap();
-        let socket = TcpSocket::new_v4().unwrap();
-        let mut stream = socket.connect(addr).await.unwrap();
+        let mut stream = TcpStream::connect(TCP_ENDPOINT).await.unwrap();
 
         let mut buff = [0; MSG_SIZE];
         for _ in 0..NUM_MSGS {
diff --git a/tokio-macros/Cargo.toml b/tokio-macros/Cargo.toml
index ea9839c6d06..5522709aed3 100644
--- a/tokio-macros/Cargo.toml
+++ b/tokio-macros/Cargo.toml
@@ -27,7 +27,12 @@ quote = "1"
 syn = { version = "2.0", features = ["full"] }
 
 [dev-dependencies]
+
+[target.'cfg(not(target_env = "sgx"))'.dev-dependencies]
 tokio = { version = "1.0.0", path = "../tokio", features = ["full"] }
 
+[target.'cfg(target_env = "sgx")'.dev-dependencies]
+tokio = { version = "1.0.0", path = "../tokio", features = ["full-sgx"] }
+
 [package.metadata.docs.rs]
 all-features = true
diff --git a/tokio-macros/src/lib.rs b/tokio-macros/src/lib.rs
index 919c4ac0ba9..47f9e7fc2f9 100644
--- a/tokio-macros/src/lib.rs
+++ b/tokio-macros/src/lib.rs
@@ -152,6 +152,9 @@ use proc_macro::TokenStream;
 /// ### Configure the runtime to start with time paused
 ///
 /// ```rust
+/// # #[cfg(not(feature = "test-util"))]
+/// # fn main(){}
+/// # #[cfg(feature = "test-util")]
 /// #[tokio::main(flavor = "current_thread", start_paused = true)]
 /// async fn main() {
 ///     println!("Hello world");
@@ -162,6 +165,7 @@ use proc_macro::TokenStream;
 ///
 /// ```rust
 /// fn main() {
+///     # #[cfg(feature = "test-util")]
 ///     tokio::runtime::Builder::new_current_thread()
 ///         .enable_all()
 ///         .start_paused(true)
diff --git a/tokio-stream/Cargo.toml b/tokio-stream/Cargo.toml
index b71119eda2e..d54df59a19b 100644
--- a/tokio-stream/Cargo.toml
+++ b/tokio-stream/Cargo.toml
@@ -42,12 +42,17 @@ tokio = { version = "1.15.0", path = "../tokio", features = ["sync"] }
 tokio-util = { version = "0.7.0", path = "../tokio-util", optional = true }
 
 [dev-dependencies]
-tokio = { version = "1.2.0", path = "../tokio", features = ["full", "test-util"] }
 async-stream = "0.3"
 parking_lot = "0.12.0"
 tokio-test = { path = "../tokio-test" }
 futures = { version = "0.3", default-features = false }
 
+[target.'cfg(not(target_env = "sgx"))'.dev-dependencies]
+tokio = { version = "1.2.0", path = "../tokio", features = ["full", "test-util"] }
+
+[target.'cfg(target_env = "sgx")'.dev-dependencies]
+tokio = { version = "1.2.0", path = "../tokio", features = ["full-sgx", "test-util"] }
+
 [package.metadata.docs.rs]
 all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
@@ -56,3 +61,6 @@ rustdoc-args = ["--cfg", "docsrs"]
 # This should allow `docsrs` to be read across projects, so that `tokio-stream`
 # can pick up stubbed types exported by `tokio`.
 rustc-args = ["--cfg", "docsrs"]
+
+[package.metadata.fortanix-sgx]
+runner = "enclave-runner"
diff --git a/tokio-test/Cargo.toml b/tokio-test/Cargo.toml
index 29a35054679..163b5f93793 100644
--- a/tokio-test/Cargo.toml
+++ b/tokio-test/Cargo.toml
@@ -25,8 +25,13 @@ bytes = "1.0.0"
 futures-core = "0.3.0"
 
 [dev-dependencies]
-tokio = { version = "1.2.0", path = "../tokio", features = ["full"] }
 futures-util = "0.3.0"
 
+[target.'cfg(not(target_env = "sgx"))'.dev-dependencies]
+tokio = { version = "1.2.0", path = "../tokio", features = ["full"] }
+
+[target.'cfg(target_env = "sgx")'.dev-dependencies]
+tokio = { version = "1.2.0", path = "../tokio", features = ["full-sgx"] }
+
 [package.metadata.docs.rs]
 all-features = true
diff --git a/tokio-util/Cargo.toml b/tokio-util/Cargo.toml
index 12c3c813656..96196c712ce 100644
--- a/tokio-util/Cargo.toml
+++ b/tokio-util/Cargo.toml
@@ -48,7 +48,6 @@ tracing = { version = "0.1.25", default-features = false, features = ["std"], op
 hashbrown = { version = "0.14.0", optional = true }
 
 [dev-dependencies]
-tokio = { version = "1.0.0", path = "../tokio", features = ["full"] }
 tokio-test = { version = "0.4.0", path = "../tokio-test" }
 tokio-stream = { version = "0.1", path = "../tokio-stream" }
 
@@ -58,6 +57,12 @@ futures-test = "0.3.5"
 parking_lot = "0.12.0"
 tempfile = "3.1.0"
 
+[target.'cfg(not(target_env = "sgx"))'.dev-dependencies]
+tokio = { version = "1.0.0", path = "../tokio", features = ["full"] }
+
+[target.'cfg(target_env = "sgx")'.dev-dependencies]
+tokio = { version = "1.0.0", path = "../tokio", features = ["full-sgx"] }
+
 [package.metadata.docs.rs]
 all-features = true
 # enable unstable features in the documentation
diff --git a/tokio-util/tests/compat.rs b/tokio-util/tests/compat.rs
index 278ebfcfb66..ee5b87e4a4e 100644
--- a/tokio-util/tests/compat.rs
+++ b/tokio-util/tests/compat.rs
@@ -1,5 +1,5 @@
 #![cfg(all(feature = "compat"))]
-#![cfg(not(target_os = "wasi"))] // WASI does not support all fs operations
+#![cfg(not(any(target_os = "wasi", target_env = "sgx")))] // WASI and SGX do not support all fs operations
 #![warn(rust_2018_idioms)]
 
 use futures_io::SeekFrom;
diff --git a/tokio-util/tests/time_delay_queue.rs b/tokio-util/tests/time_delay_queue.rs
index 9b7b6cc85da..29406cf3a15 100644
--- a/tokio-util/tests/time_delay_queue.rs
+++ b/tokio-util/tests/time_delay_queue.rs
@@ -1,6 +1,6 @@
 #![allow(clippy::disallowed_names)]
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use futures::StreamExt;
 use tokio::time::{self, sleep, sleep_until, Duration, Instant};
diff --git a/tokio/Cargo.toml b/tokio/Cargo.toml
index 4c4402227a2..f77d2e9cdb2 100644
--- a/tokio/Cargo.toml
+++ b/tokio/Cargo.toml
@@ -41,6 +41,18 @@ full = [
   "time",
 ]
 
+# everything possible in SGX
+full-sgx = [
+  "io-util",
+  "io-std",
+  "macros",
+  "net",
+  "rt",
+  "rt-multi-thread",
+  "sync",
+  "time",
+]
+
 fs = []
 io-util = ["bytes"]
 # stdin, stdout, stderr
@@ -99,7 +111,7 @@ mio = { version = "0.8.9", optional = true, default-features = false }
 num_cpus = { version = "1.8.0", optional = true }
 parking_lot = { version = "0.12.0", optional = true }
 
-[target.'cfg(not(target_family = "wasm"))'.dependencies]
+[target.'cfg(not(any(target_family = "wasm", target_env = "sgx")))'.dependencies]
 socket2 = { version = "0.5.5", optional = true, features = [ "all" ] }
 
 # Currently unstable. The API exposed by these features may be broken at any time.
@@ -138,7 +150,7 @@ futures = { version = "0.3.0", features = ["async-await"] }
 mockall = "0.11.1"
 async-stream = "0.3"
 
-[target.'cfg(not(target_family = "wasm"))'.dev-dependencies]
+[target.'cfg(not(any(target_family = "wasm", target_env = "sgx")))'.dev-dependencies]
 socket2 = "0.5.5"
 tempfile = "3.1.0"
 
@@ -164,3 +176,10 @@ rustc-args = ["--cfg", "tokio_unstable", "--cfg", "tokio_taskdump"]
 
 [package.metadata.playground]
 features = ["full", "test-util"]
+
+# set number of threads so tests can run properly
+[package.metadata.fortanix-sgx]
+threads = 100
+heap-size = 0x4000000
+stack-size = 0x40000
+runner = "enclave-runner"
diff --git a/tokio/src/io/poll_evented.rs b/tokio/src/io/poll_evented.rs
index cb5bffd54a9..075c1daf883 100644
--- a/tokio/src/io/poll_evented.rs
+++ b/tokio/src/io/poll_evented.rs
@@ -131,6 +131,7 @@ impl<E: Source> PollEvented<E> {
 
     /// Deregisters the inner io from the registration and returns a Result containing the inner io.
     #[cfg(any(feature = "net", feature = "process"))]
+    #[cfg(not(target_env = "sgx"))]
     pub(crate) fn into_inner(mut self) -> io::Result<E> {
         let mut inner = self.io.take().unwrap(); // As io shouldn't ever be None, just unwrap here.
         self.registration.deregister(&mut inner)?;
diff --git a/tokio/src/lib.rs b/tokio/src/lib.rs
index 21d19bac9d9..6da0d612cb8 100644
--- a/tokio/src/lib.rs
+++ b/tokio/src/lib.rs
@@ -16,6 +16,7 @@
     no_crate_inject,
     attr(deny(warnings, rust_2018_idioms), allow(dead_code, unused_variables))
 ))]
+#![cfg_attr(target_env = "sgx", feature(sgx_platform))]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 #![cfg_attr(docsrs, allow(unused_attributes))]
 #![cfg_attr(loom, allow(dead_code, unreachable_pub))]
diff --git a/tokio/src/net/addr.rs b/tokio/src/net/addr.rs
index fb8248fb3ba..d6fcf3a4b5d 100644
--- a/tokio/src/net/addr.rs
+++ b/tokio/src/net/addr.rs
@@ -1,6 +1,8 @@
 use std::future;
 use std::io;
 use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6};
+#[cfg(target_env = "sgx")]
+use std::iter;
 
 /// Converts or resolves without blocking to one or more `SocketAddr` values.
 ///
@@ -39,10 +41,18 @@ where
 {
     type Iter = T::Iter;
     type Future = T::Future;
+    #[cfg(target_env = "sgx")]
+    type StringIter = T::StringIter;
+
 
     fn to_socket_addrs(&self, _: sealed::Internal) -> Self::Future {
         (**self).to_socket_addrs(sealed::Internal)
     }
+
+    #[cfg(target_env = "sgx")]
+    fn to_string_addrs(&self) -> Self::StringIter {
+        (**self).to_string_addrs()
+    }
 }
 
 // ===== impl SocketAddr =====
@@ -52,11 +62,18 @@ impl ToSocketAddrs for SocketAddr {}
 impl sealed::ToSocketAddrsPriv for SocketAddr {
     type Iter = std::option::IntoIter<SocketAddr>;
     type Future = ReadyFuture<Self::Iter>;
+    #[cfg(target_env = "sgx")]
+    type StringIter = iter::Once<String>;
 
     fn to_socket_addrs(&self, _: sealed::Internal) -> Self::Future {
         let iter = Some(*self).into_iter();
         future::ready(Ok(iter))
     }
+
+    #[cfg(target_env = "sgx")]
+    fn to_string_addrs(&self) -> Self::StringIter {
+        iter::once(self.to_string())
+    }
 }
 
 // ===== impl SocketAddrV4 =====
@@ -66,10 +83,17 @@ impl ToSocketAddrs for SocketAddrV4 {}
 impl sealed::ToSocketAddrsPriv for SocketAddrV4 {
     type Iter = std::option::IntoIter<SocketAddr>;
     type Future = ReadyFuture<Self::Iter>;
+    #[cfg(target_env = "sgx")]
+    type StringIter = iter::Once<String>;
 
     fn to_socket_addrs(&self, _: sealed::Internal) -> Self::Future {
         SocketAddr::V4(*self).to_socket_addrs(sealed::Internal)
     }
+
+    #[cfg(target_env = "sgx")]
+    fn to_string_addrs(&self) -> Self::StringIter {
+        iter::once(self.to_string())
+    }
 }
 
 // ===== impl SocketAddrV6 =====
@@ -79,10 +103,17 @@ impl ToSocketAddrs for SocketAddrV6 {}
 impl sealed::ToSocketAddrsPriv for SocketAddrV6 {
     type Iter = std::option::IntoIter<SocketAddr>;
     type Future = ReadyFuture<Self::Iter>;
+    #[cfg(target_env = "sgx")]
+    type StringIter = iter::Once<String>;
 
     fn to_socket_addrs(&self, _: sealed::Internal) -> Self::Future {
         SocketAddr::V6(*self).to_socket_addrs(sealed::Internal)
     }
+
+    #[cfg(target_env = "sgx")]
+    fn to_string_addrs(&self) -> Self::StringIter {
+        iter::once(self.to_string())
+    }
 }
 
 // ===== impl (IpAddr, u16) =====
@@ -92,11 +123,18 @@ impl ToSocketAddrs for (IpAddr, u16) {}
 impl sealed::ToSocketAddrsPriv for (IpAddr, u16) {
     type Iter = std::option::IntoIter<SocketAddr>;
     type Future = ReadyFuture<Self::Iter>;
+    #[cfg(target_env = "sgx")]
+    type StringIter = iter::Once<String>;
 
     fn to_socket_addrs(&self, _: sealed::Internal) -> Self::Future {
         let iter = Some(SocketAddr::from(*self)).into_iter();
         future::ready(Ok(iter))
     }
+
+    #[cfg(target_env = "sgx")]
+    fn to_string_addrs(&self) -> Self::StringIter {
+        iter::once(SocketAddr::from(*self).to_string())
+    }
 }
 
 // ===== impl (Ipv4Addr, u16) =====
@@ -106,11 +144,18 @@ impl ToSocketAddrs for (Ipv4Addr, u16) {}
 impl sealed::ToSocketAddrsPriv for (Ipv4Addr, u16) {
     type Iter = std::option::IntoIter<SocketAddr>;
     type Future = ReadyFuture<Self::Iter>;
+    #[cfg(target_env = "sgx")]
+    type StringIter = iter::Once<String>;
 
     fn to_socket_addrs(&self, _: sealed::Internal) -> Self::Future {
         let (ip, port) = *self;
         SocketAddrV4::new(ip, port).to_socket_addrs(sealed::Internal)
     }
+
+    #[cfg(target_env = "sgx")]
+    fn to_string_addrs(&self) -> Self::StringIter {
+        iter::once(SocketAddr::from(*self).to_string())
+    }
 }
 
 // ===== impl (Ipv6Addr, u16) =====
@@ -120,20 +165,46 @@ impl ToSocketAddrs for (Ipv6Addr, u16) {}
 impl sealed::ToSocketAddrsPriv for (Ipv6Addr, u16) {
     type Iter = std::option::IntoIter<SocketAddr>;
     type Future = ReadyFuture<Self::Iter>;
+    #[cfg(target_env = "sgx")]
+    type StringIter = iter::Once<String>;
 
     fn to_socket_addrs(&self, _: sealed::Internal) -> Self::Future {
         let (ip, port) = *self;
         SocketAddrV6::new(ip, port, 0, 0).to_socket_addrs(sealed::Internal)
     }
+
+    #[cfg(target_env = "sgx")]
+    fn to_string_addrs(&self) -> Self::StringIter {
+        iter::once(SocketAddr::from(*self).to_string())
+    }
 }
 
 // ===== impl &[SocketAddr] =====
 
+#[cfg(target_env = "sgx")]
+#[derive(Debug)]
+pub struct ToStringIter<I>(I);
+
+#[cfg(target_env = "sgx")]
+impl<T, I> Iterator for ToStringIter<I>
+where
+    I: Iterator<Item = T>,
+    T: ToString,
+{
+    type Item = String;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        self.0.next().map(|t| t.to_string())
+    }
+}
+
 impl ToSocketAddrs for &[SocketAddr] {}
 
-impl sealed::ToSocketAddrsPriv for &[SocketAddr] {
+impl<'a> sealed::ToSocketAddrsPriv for &'a [SocketAddr] {
     type Iter = std::vec::IntoIter<SocketAddr>;
     type Future = ReadyFuture<Self::Iter>;
+    #[cfg(target_env = "sgx")]
+    type StringIter = ToStringIter<std::slice::Iter<'a, SocketAddr>>;
 
     fn to_socket_addrs(&self, _: sealed::Internal) -> Self::Future {
         #[inline]
@@ -154,6 +225,11 @@ impl sealed::ToSocketAddrsPriv for &[SocketAddr] {
         let iter = slice_to_vec(self).into_iter();
         future::ready(Ok(iter))
     }
+
+    #[cfg(target_env = "sgx")]
+    fn to_string_addrs(&self) -> Self::StringIter {
+        ToStringIter(self.iter())
+    }
 }
 
 cfg_net! {
@@ -164,6 +240,8 @@ cfg_net! {
     impl sealed::ToSocketAddrsPriv for str {
         type Iter = sealed::OneOrMore;
         type Future = sealed::MaybeReady;
+        #[cfg(target_env = "sgx")]
+        type StringIter = iter::Once<String>;
 
         fn to_socket_addrs(&self, _: sealed::Internal) -> Self::Future {
             use crate::blocking::spawn_blocking;
@@ -183,6 +261,11 @@ cfg_net! {
                 std::net::ToSocketAddrs::to_socket_addrs(&s)
             })))
         }
+
+        #[cfg(target_env = "sgx")]
+        fn to_string_addrs(&self) -> Self::StringIter {
+            iter::once(self.to_owned())
+        }
     }
 
     // ===== impl (&str, u16) =====
@@ -192,6 +275,8 @@ cfg_net! {
     impl sealed::ToSocketAddrsPriv for (&str, u16) {
         type Iter = sealed::OneOrMore;
         type Future = sealed::MaybeReady;
+        #[cfg(target_env = "sgx")]
+        type StringIter = iter::Once<String>;
 
         fn to_socket_addrs(&self, _: sealed::Internal) -> Self::Future {
             use crate::blocking::spawn_blocking;
@@ -220,6 +305,11 @@ cfg_net! {
                 std::net::ToSocketAddrs::to_socket_addrs(&(&host[..], port))
             })))
         }
+
+        #[cfg(target_env = "sgx")]
+        fn to_string_addrs(&self) -> Self::StringIter {
+            iter::once(format!("{}:{}", self.0, self.1))
+        }
     }
 
     // ===== impl (String, u16) =====
@@ -229,10 +319,17 @@ cfg_net! {
     impl sealed::ToSocketAddrsPriv for (String, u16) {
         type Iter = sealed::OneOrMore;
         type Future = sealed::MaybeReady;
+        #[cfg(target_env = "sgx")]
+        type StringIter = iter::Once<String>;
 
         fn to_socket_addrs(&self, _: sealed::Internal) -> Self::Future {
             (self.0.as_str(), self.1).to_socket_addrs(sealed::Internal)
         }
+
+        #[cfg(target_env = "sgx")]
+        fn to_string_addrs(&self) -> Self::StringIter {
+            iter::once(format!("{}:{}", self.0, self.1))
+        }
     }
 
     // ===== impl String =====
@@ -242,10 +339,17 @@ cfg_net! {
     impl sealed::ToSocketAddrsPriv for String {
         type Iter = <str as sealed::ToSocketAddrsPriv>::Iter;
         type Future = <str as sealed::ToSocketAddrsPriv>::Future;
+        #[cfg(target_env = "sgx")]
+        type StringIter = iter::Once<String>;
 
         fn to_socket_addrs(&self, _: sealed::Internal) -> Self::Future {
             self[..].to_socket_addrs(sealed::Internal)
         }
+
+        #[cfg(target_env = "sgx")]
+        fn to_string_addrs(&self) -> Self::StringIter {
+            iter::once(self.clone())
+        }
     }
 }
 
@@ -262,8 +366,15 @@ pub(crate) mod sealed {
     pub trait ToSocketAddrsPriv {
         type Iter: Iterator<Item = SocketAddr> + Send + 'static;
         type Future: Future<Output = io::Result<Self::Iter>> + Send + 'static;
+        #[cfg(target_env = "sgx")]
+        type StringIter: Iterator<Item = String>;
 
         fn to_socket_addrs(&self, internal: Internal) -> Self::Future;
+
+        // There is no name resolution mechanism in SGX, but bind and connect
+        // take arbitrary addresses represented as strings.
+        #[cfg(target_env = "sgx")]
+        fn to_string_addrs(&self) -> Self::StringIter;
     }
 
     #[allow(missing_debug_implementations)]
diff --git a/tokio/src/net/mod.rs b/tokio/src/net/mod.rs
index 2d317a8a219..681f9a4b38b 100644
--- a/tokio/src/net/mod.rs
+++ b/tokio/src/net/mod.rs
@@ -25,6 +25,7 @@
 mod addr;
 cfg_not_wasi! {
     #[cfg(feature = "net")]
+    #[cfg(not(target_env = "sgx"))]
     pub(crate) use addr::to_socket_addrs;
 }
 pub use addr::ToSocketAddrs;
@@ -37,9 +38,12 @@ cfg_net! {
     pub use tcp::listener::TcpListener;
     pub use tcp::stream::TcpStream;
     cfg_not_wasi! {
+        #[cfg(not(target_env = "sgx"))]
         pub use tcp::socket::TcpSocket;
 
+        #[cfg(not(target_env = "sgx"))]
         mod udp;
+        #[cfg(not(target_env = "sgx"))]
         pub use udp::UdpSocket;
     }
 }
diff --git a/tokio/src/net/tcp/listener.rs b/tokio/src/net/tcp/listener.rs
index f1befac26dc..22ec3e63ff5 100644
--- a/tokio/src/net/tcp/listener.rs
+++ b/tokio/src/net/tcp/listener.rs
@@ -2,7 +2,9 @@ use crate::io::{Interest, PollEvented};
 use crate::net::tcp::TcpStream;
 
 cfg_not_wasi! {
-    use crate::net::{to_socket_addrs, ToSocketAddrs};
+    #[cfg(not(target_env = "sgx"))]
+    use crate::net::to_socket_addrs;
+    use crate::net::ToSocketAddrs;
 }
 
 use std::fmt;
@@ -98,7 +100,10 @@ impl TcpListener {
         /// }
         /// ```
         pub async fn bind<A: ToSocketAddrs>(addr: A) -> io::Result<TcpListener> {
-            let addrs = to_socket_addrs(addr).await?;
+            let addrs = {
+                #[cfg(not(target_env = "sgx"))] { to_socket_addrs(addr).await? }
+                #[cfg(target_env = "sgx")] { addr.to_string_addrs() }
+            };
 
             let mut last_err = None;
 
@@ -117,6 +122,13 @@ impl TcpListener {
             }))
         }
 
+        #[cfg(target_env = "sgx")]
+        fn bind_addr(addr: String) -> io::Result<TcpListener> {
+            let listener = mio::net::TcpListener::bind_str(&addr)?;
+            TcpListener::new(listener)
+        }
+
+        #[cfg(not(target_env = "sgx"))]
         fn bind_addr(addr: SocketAddr) -> io::Result<TcpListener> {
             let listener = mio::net::TcpListener::bind(addr)?;
             TcpListener::new(listener)
@@ -262,10 +274,13 @@ impl TcpListener {
     /// [`tokio::net::TcpListener`]: TcpListener
     /// [`std::net::TcpListener`]: std::net::TcpListener
     /// [`set_nonblocking`]: fn@std::net::TcpListener::set_nonblocking
+    #[cfg(not(target_env = "sgx"))] // `TcpListener::into_raw_fd()` not support by `mio` for SGX platform
     pub fn into_std(self) -> io::Result<std::net::TcpListener> {
         #[cfg(unix)]
         {
+            #[cfg(unix)]
             use std::os::unix::io::{FromRawFd, IntoRawFd};
+
             self.io
                 .into_inner()
                 .map(IntoRawFd::into_raw_fd)
diff --git a/tokio/src/net/tcp/mod.rs b/tokio/src/net/tcp/mod.rs
index 734eabe6dda..7898e1a4a28 100644
--- a/tokio/src/net/tcp/mod.rs
+++ b/tokio/src/net/tcp/mod.rs
@@ -3,6 +3,7 @@
 pub(crate) mod listener;
 
 cfg_not_wasi! {
+    #[cfg(not(target_env = "sgx"))]
     pub(crate) mod socket;
 }
 
diff --git a/tokio/src/net/tcp/stream.rs b/tokio/src/net/tcp/stream.rs
index 9b604b339f3..4222eed088f 100644
--- a/tokio/src/net/tcp/stream.rs
+++ b/tokio/src/net/tcp/stream.rs
@@ -1,6 +1,9 @@
 cfg_not_wasi! {
     use crate::future::poll_fn;
-    use crate::net::{to_socket_addrs, ToSocketAddrs};
+    use crate::net::ToSocketAddrs;
+    #[cfg(not(target_env = "sgx"))]
+    use crate::net::to_socket_addrs;
+    #[cfg(not(target_env = "sgx"))]
     use std::time::Duration;
 }
 
@@ -112,7 +115,10 @@ impl TcpStream {
         /// [`write_all`]: fn@crate::io::AsyncWriteExt::write_all
         /// [`AsyncWriteExt`]: trait@crate::io::AsyncWriteExt
         pub async fn connect<A: ToSocketAddrs>(addr: A) -> io::Result<TcpStream> {
-            let addrs = to_socket_addrs(addr).await?;
+            let addrs = {
+                #[cfg(not(target_env = "sgx"))] { to_socket_addrs(addr).await? }
+                #[cfg(target_env = "sgx")] { addr.to_string_addrs() }
+            };
 
             let mut last_err = None;
 
@@ -132,11 +138,19 @@ impl TcpStream {
         }
 
         /// Establishes a connection to the specified `addr`.
+        #[cfg(not(target_env = "sgx"))]
         async fn connect_addr(addr: SocketAddr) -> io::Result<TcpStream> {
             let sys = mio::net::TcpStream::connect(addr)?;
             TcpStream::connect_mio(sys).await
         }
 
+        /// Establishes a connection to the specified `addr`.
+        #[cfg(target_env = "sgx")]
+        async fn connect_addr(addr: String) -> io::Result<TcpStream> {
+            let sys = mio::net::TcpStream::connect_str(&addr)?;
+            TcpStream::connect_mio(sys).await
+        }
+
         pub(crate) async fn connect_mio(sys: mio::net::TcpStream) -> io::Result<TcpStream> {
             let stream = TcpStream::new(sys)?;
 
@@ -243,6 +257,7 @@ impl TcpStream {
     /// [`tokio::net::TcpStream`]: TcpStream
     /// [`std::net::TcpStream`]: std::net::TcpStream
     /// [`set_nonblocking`]: fn@std::net::TcpStream::set_nonblocking
+    #[cfg(not(target_env = "sgx"))] // `TcpStream::into_raw_fd()` not support by `mio` for SGX platform
     pub fn into_std(self) -> io::Result<std::net::TcpStream> {
         #[cfg(unix)]
         {
@@ -1154,6 +1169,7 @@ impl TcpStream {
         self.io.set_nodelay(nodelay)
     }
 
+    #[cfg(not(target_env = "sgx"))]
     cfg_not_wasi! {
         /// Reads the linger duration for this socket by getting the `SO_LINGER`
         /// option.
diff --git a/tokio/src/runtime/blocking/pool.rs b/tokio/src/runtime/blocking/pool.rs
index 3b6de8d7917..157c509d30d 100644
--- a/tokio/src/runtime/blocking/pool.rs
+++ b/tokio/src/runtime/blocking/pool.rs
@@ -131,6 +131,7 @@ pub(crate) enum Mandatory {
     NonMandatory,
 }
 
+#[derive(Debug)]
 pub(crate) enum SpawnError {
     /// Pool is shutting down and the task was not scheduled
     ShuttingDown,
diff --git a/tokio/src/runtime/context.rs b/tokio/src/runtime/context.rs
index c49c08932b2..f266bea014e 100644
--- a/tokio/src/runtime/context.rs
+++ b/tokio/src/runtime/context.rs
@@ -138,6 +138,13 @@ pub(super) fn budget<R>(f: impl FnOnce(&Cell<coop::Budget>) -> R) -> Result<R, A
 cfg_rt! {
     use crate::runtime::ThreadId;
 
+    #[cfg(target_env = "sgx")]
+    pub(crate) fn has_thread_id() -> bool {
+        CONTEXT.try_with(|ctx| {
+            ctx.thread_id.get().is_some()
+        }).unwrap_or(false)
+    }
+
     pub(crate) fn thread_id() -> Result<ThreadId, AccessError> {
         CONTEXT.try_with(|ctx| {
             match ctx.thread_id.get() {
diff --git a/tokio/src/runtime/io/registration.rs b/tokio/src/runtime/io/registration.rs
index 759589863eb..17bba574e1d 100644
--- a/tokio/src/runtime/io/registration.rs
+++ b/tokio/src/runtime/io/registration.rs
@@ -118,7 +118,7 @@ impl Registration {
 
     // Uses the poll path, requiring the caller to ensure mutual exclusion for
     // correctness. Only the last task to call this function is notified.
-    #[cfg(not(target_os = "wasi"))]
+    #[cfg(not(any(target_os = "wasi", target_env = "sgx")))]
     pub(crate) fn poll_read_io<R>(
         &self,
         cx: &mut Context<'_>,
diff --git a/tokio/src/task/local.rs b/tokio/src/task/local.rs
index 9caaca629df..fb06fd25168 100644
--- a/tokio/src/task/local.rs
+++ b/tokio/src/task/local.rs
@@ -1139,6 +1139,14 @@ impl LocalState {
 
     #[track_caller]
     fn assert_called_from_owner_thread(&self) {
+        // Even when the thread is being destroyed, local data may still be initialized on the SGX
+        // platform. So calling `context::thread_id()` will always return a thread id. In line with
+        // the `debug_assert` below, we ignore such cases on the SGX platform.
+        #[cfg(target_env = "sgx")]
+        if !context::has_thread_id() {
+            return;
+        }
+
         // FreeBSD has some weirdness around thread-local destruction.
         // TODO: remove this hack when thread id is cleaned up
         #[cfg(not(any(target_os = "openbsd", target_os = "freebsd")))]
diff --git a/tokio/tests/_require_full.rs b/tokio/tests/_require_full.rs
index d33943a960d..9927e2ab369 100644
--- a/tokio/tests/_require_full.rs
+++ b/tokio/tests/_require_full.rs
@@ -1,4 +1,4 @@
-#[cfg(not(any(feature = "full", target_family = "wasm")))]
+#[cfg(not(any(feature = "full", target_family = "wasm", feature = "full-sgx")))]
 compile_error!("run main Tokio tests with `--features full`");
 
 // CI sets `--cfg tokio_no_parking_lot` when trying to run tests with
diff --git a/tokio/tests/async_send_sync.rs b/tokio/tests/async_send_sync.rs
index dfd26f9e9e7..7356fab917d 100644
--- a/tokio/tests/async_send_sync.rs
+++ b/tokio/tests/async_send_sync.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 #![allow(clippy::type_complexity, clippy::diverging_sub_expression)]
 
 use std::cell::Cell;
@@ -151,6 +151,7 @@ const _: fn() = || {
     AmbiguousIfUnpin::some_item(&f);
 };
 
+#[cfg(not(target_env = "sgx"))]
 cfg_not_wasi! {
     mod fs {
         use super::*;
@@ -197,6 +198,7 @@ cfg_not_wasi! {
 }
 
 cfg_not_wasi! {
+    #[cfg(not(target_env = "sgx"))]
     assert_value!(tokio::net::TcpSocket: Send & Sync & Unpin);
     async_assert_fn!(tokio::net::TcpListener::bind(SocketAddr): Send & Sync & !Unpin);
     async_assert_fn!(tokio::net::TcpStream::connect(SocketAddr): Send & Sync & !Unpin);
@@ -215,7 +217,8 @@ async_assert_fn!(tokio::net::TcpStream::readable(_): Send & Sync & !Unpin);
 async_assert_fn!(tokio::net::TcpStream::ready(_, tokio::io::Interest): Send & Sync & !Unpin);
 async_assert_fn!(tokio::net::TcpStream::writable(_): Send & Sync & !Unpin);
 
-// Wasi does not support UDP
+// Wasi and SGX do not support UDP
+#[cfg(not(target_env = "sgx"))]
 cfg_not_wasi! {
     mod udp_socket {
         use super::*;
@@ -296,6 +299,7 @@ mod windows_named_pipe {
     async_assert_fn!(NamedPipeServer::writable(_): Send & Sync & !Unpin);
 }
 
+#[cfg(not(target_env = "sgx"))]
 cfg_not_wasi! {
     mod test_process {
         use super::*;
diff --git a/tokio/tests/buffered.rs b/tokio/tests/buffered.rs
index 27e75d10d52..2ba9aa6a44e 100644
--- a/tokio/tests/buffered.rs
+++ b/tokio/tests/buffered.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(all(feature = "full", not(target_os = "wasi")))] // Wasi does not support bind()
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))] // Wasi does not support bind()
 
 use tokio::net::TcpListener;
 use tokio_test::assert_ok;
diff --git a/tokio/tests/io_async_read.rs b/tokio/tests/io_async_read.rs
index aaeadfa4c11..77062b5334b 100644
--- a/tokio/tests/io_async_read.rs
+++ b/tokio/tests/io_async_read.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use tokio::io::AsyncRead;
 
diff --git a/tokio/tests/io_chain.rs b/tokio/tests/io_chain.rs
index e2d59411a11..29a36290b7a 100644
--- a/tokio/tests/io_chain.rs
+++ b/tokio/tests/io_chain.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use tokio::io::AsyncReadExt;
 use tokio_test::assert_ok;
diff --git a/tokio/tests/io_copy.rs b/tokio/tests/io_copy.rs
index 005e1701191..97a5db8ed81 100644
--- a/tokio/tests/io_copy.rs
+++ b/tokio/tests/io_copy.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use bytes::BytesMut;
 use futures::ready;
diff --git a/tokio/tests/io_driver.rs b/tokio/tests/io_driver.rs
index 2e2c84746c9..5b18a254181 100644
--- a/tokio/tests/io_driver.rs
+++ b/tokio/tests/io_driver.rs
@@ -1,6 +1,6 @@
 #![warn(rust_2018_idioms)]
 // Wasi does not support panic recovery or threading
-#![cfg(all(feature = "full", not(target_os = "wasi")))]
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))]
 
 use tokio::net::TcpListener;
 use tokio::runtime;
diff --git a/tokio/tests/io_driver_drop.rs b/tokio/tests/io_driver_drop.rs
index c3182637916..21b7c7bb9af 100644
--- a/tokio/tests/io_driver_drop.rs
+++ b/tokio/tests/io_driver_drop.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(all(feature = "full", not(target_os = "wasi")))] // Wasi does not support bind
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))] // Wasi does not support bind
 
 use tokio::net::TcpListener;
 use tokio::runtime;
diff --git a/tokio/tests/io_lines.rs b/tokio/tests/io_lines.rs
index 9996d81ca74..e172172c480 100644
--- a/tokio/tests/io_lines.rs
+++ b/tokio/tests/io_lines.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use tokio::io::AsyncBufReadExt;
 use tokio_test::assert_ok;
diff --git a/tokio/tests/io_read.rs b/tokio/tests/io_read.rs
index 6bea0ac865e..40a76ac2b32 100644
--- a/tokio/tests/io_read.rs
+++ b/tokio/tests/io_read.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(all(feature = "full", not(target_os = "wasi")))] // Wasi does not support panic recovery
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))] // Wasi does not support panic recovery
 
 use tokio::io::{AsyncRead, AsyncReadExt, ReadBuf};
 use tokio_test::assert_ok;
diff --git a/tokio/tests/io_read_exact.rs b/tokio/tests/io_read_exact.rs
index d0e659bd339..6040b86e08b 100644
--- a/tokio/tests/io_read_exact.rs
+++ b/tokio/tests/io_read_exact.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use tokio::io::AsyncReadExt;
 use tokio_test::assert_ok;
diff --git a/tokio/tests/io_read_line.rs b/tokio/tests/io_read_line.rs
index 15841c9b49d..aed181056d4 100644
--- a/tokio/tests/io_read_line.rs
+++ b/tokio/tests/io_read_line.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use std::io::ErrorKind;
 use tokio::io::{AsyncBufReadExt, BufReader, Error};
diff --git a/tokio/tests/io_read_to_end.rs b/tokio/tests/io_read_to_end.rs
index 29b60becec4..743efef7882 100644
--- a/tokio/tests/io_read_to_end.rs
+++ b/tokio/tests/io_read_to_end.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use std::pin::Pin;
 use std::task::{Context, Poll};
diff --git a/tokio/tests/io_read_to_string.rs b/tokio/tests/io_read_to_string.rs
index f30c26caa88..2e554a33e1c 100644
--- a/tokio/tests/io_read_to_string.rs
+++ b/tokio/tests/io_read_to_string.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use std::io;
 use tokio::io::AsyncReadExt;
diff --git a/tokio/tests/io_read_until.rs b/tokio/tests/io_read_until.rs
index 61800a0d9c1..629936b1eaa 100644
--- a/tokio/tests/io_read_until.rs
+++ b/tokio/tests/io_read_until.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use std::io::ErrorKind;
 use tokio::io::{AsyncBufReadExt, BufReader, Error};
diff --git a/tokio/tests/io_split.rs b/tokio/tests/io_split.rs
index 9f17c9eb14e..91e289e620c 100644
--- a/tokio/tests/io_split.rs
+++ b/tokio/tests/io_split.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(all(feature = "full", not(target_os = "wasi")))] // Wasi does not support panic recovery
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))] // Wasi does not support panic recovery
 
 use tokio::io::{
     split, AsyncRead, AsyncReadExt, AsyncWrite, AsyncWriteExt, ReadBuf, ReadHalf, WriteHalf,
diff --git a/tokio/tests/io_take.rs b/tokio/tests/io_take.rs
index 539f17f3a2d..df0a2c4f5d9 100644
--- a/tokio/tests/io_take.rs
+++ b/tokio/tests/io_take.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(all(feature = "full", not(target_os = "wasi")))] // Wasi does not support panic recovery
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))] // Wasi does not support panic recovery
 
 use std::pin::Pin;
 use std::task::{Context, Poll};
diff --git a/tokio/tests/io_write.rs b/tokio/tests/io_write.rs
index 96cebc3313b..0620566f9dc 100644
--- a/tokio/tests/io_write.rs
+++ b/tokio/tests/io_write.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use tokio::io::{AsyncWrite, AsyncWriteExt};
 use tokio_test::assert_ok;
diff --git a/tokio/tests/io_write_all.rs b/tokio/tests/io_write_all.rs
index 7ca02228a3c..c88aba46d22 100644
--- a/tokio/tests/io_write_all.rs
+++ b/tokio/tests/io_write_all.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use tokio::io::{AsyncWrite, AsyncWriteExt};
 use tokio_test::assert_ok;
diff --git a/tokio/tests/io_write_int.rs b/tokio/tests/io_write_int.rs
index 48a583d8c3f..af52ec97c55 100644
--- a/tokio/tests/io_write_int.rs
+++ b/tokio/tests/io_write_int.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use tokio::io::{AsyncWrite, AsyncWriteExt};
 
diff --git a/tokio/tests/net_bind_resource.rs b/tokio/tests/net_bind_resource.rs
index 05fd1604b87..24c99eebeab 100644
--- a/tokio/tests/net_bind_resource.rs
+++ b/tokio/tests/net_bind_resource.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(all(feature = "full", not(target_os = "wasi")))] // Wasi doesn't support panic recovery or bind
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))] // Wasi doesn't support panic recovery or bind
 
 use tokio::net::TcpListener;
 
diff --git a/tokio/tests/rt_basic.rs b/tokio/tests/rt_basic.rs
index 789c0475da4..ea827901c72 100644
--- a/tokio/tests/rt_basic.rs
+++ b/tokio/tests/rt_basic.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use tokio::runtime::Runtime;
 use tokio::sync::oneshot;
diff --git a/tokio/tests/rt_common.rs b/tokio/tests/rt_common.rs
index abca8dd667a..494599d3414 100644
--- a/tokio/tests/rt_common.rs
+++ b/tokio/tests/rt_common.rs
@@ -1,6 +1,6 @@
 #![allow(clippy::needless_range_loop)]
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 // Tests to run on both current-thread & multi-thread runtime variants.
 
@@ -997,7 +997,7 @@ rt_test! {
         drop(rt);
     }
 
-    #[cfg(not(target_os="wasi"))] // Wasi doesn't support UDP or bind()
+    #[cfg(not(any(target_os="wasi", target_env = "sgx")))] // Wasi doesn't support UDP or bind(), SGX doesn't support UDP
     #[test]
     fn io_notify_while_shutting_down() {
         use tokio::net::UdpSocket;
diff --git a/tokio/tests/rt_threaded.rs b/tokio/tests/rt_threaded.rs
index 8a61c6ad38f..3773fbd5598 100644
--- a/tokio/tests/rt_threaded.rs
+++ b/tokio/tests/rt_threaded.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(all(feature = "full", not(target_os = "wasi")))]
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))]
 
 use tokio::io::{AsyncReadExt, AsyncWriteExt};
 use tokio::net::{TcpListener, TcpStream};
@@ -622,6 +622,7 @@ fn test_nested_block_in_place_with_block_on_between() {
 // is sufficient. If there is a regression, this test will hang. In theory, we
 // could add limits, but that would be likely to fail on CI.
 #[test]
+#[cfg(not(target_env = "sgx"))] // Test freezes on SGX
 #[cfg(not(tokio_no_tuning_tests))]
 fn test_tuning() {
     use std::sync::atomic::AtomicBool;
diff --git a/tokio/tests/sync_barrier.rs b/tokio/tests/sync_barrier.rs
index ac5977f24d8..6997c3d36ba 100644
--- a/tokio/tests/sync_barrier.rs
+++ b/tokio/tests/sync_barrier.rs
@@ -1,6 +1,6 @@
 #![allow(clippy::unnecessary_operation)]
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "sync")]
+#![cfg(any(feature = "sync", feature = "full-sgx"))]
 
 #[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
 use wasm_bindgen_test::wasm_bindgen_test as test;
diff --git a/tokio/tests/sync_errors.rs b/tokio/tests/sync_errors.rs
index 4e43c8f311e..3af6b4ed93e 100644
--- a/tokio/tests/sync_errors.rs
+++ b/tokio/tests/sync_errors.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "sync")]
+#![cfg(any(feature = "sync", feature = "full-sgx"))]
 
 #[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
 use wasm_bindgen_test::wasm_bindgen_test as test;
diff --git a/tokio/tests/sync_mpsc.rs b/tokio/tests/sync_mpsc.rs
index a5c15a4cfc6..63c694570ed 100644
--- a/tokio/tests/sync_mpsc.rs
+++ b/tokio/tests/sync_mpsc.rs
@@ -1,6 +1,6 @@
 #![allow(clippy::redundant_clone)]
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "sync")]
+#![cfg(any(feature = "sync", feature = "full-sgx"))]
 
 #[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
 use wasm_bindgen_test::wasm_bindgen_test as test;
diff --git a/tokio/tests/sync_mutex.rs b/tokio/tests/sync_mutex.rs
index f423c82e7b1..2114a44ad2c 100644
--- a/tokio/tests/sync_mutex.rs
+++ b/tokio/tests/sync_mutex.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "sync")]
+#![cfg(any(feature = "sync", feature = "full-sgx"))]
 
 #[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
 use wasm_bindgen_test::wasm_bindgen_test as test;
diff --git a/tokio/tests/sync_mutex_owned.rs b/tokio/tests/sync_mutex_owned.rs
index badcef3d08e..360fdfda1b2 100644
--- a/tokio/tests/sync_mutex_owned.rs
+++ b/tokio/tests/sync_mutex_owned.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "sync")]
+#![cfg(any(feature = "sync", feature = "full-sgx"))]
 
 #[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
 use wasm_bindgen_test::wasm_bindgen_test as test;
diff --git a/tokio/tests/sync_notify.rs b/tokio/tests/sync_notify.rs
index e31b9d49cff..5fea4656fa3 100644
--- a/tokio/tests/sync_notify.rs
+++ b/tokio/tests/sync_notify.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "sync")]
+#![cfg(any(feature = "sync", feature = "full-sgx"))]
 
 #[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
 use wasm_bindgen_test::wasm_bindgen_test as test;
diff --git a/tokio/tests/sync_oneshot.rs b/tokio/tests/sync_oneshot.rs
index 163d50de9d2..9ed3e333404 100644
--- a/tokio/tests/sync_oneshot.rs
+++ b/tokio/tests/sync_oneshot.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "sync")]
+#![cfg(any(feature = "sync", feature = "full-sgx"))]
 
 #[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
 use wasm_bindgen_test::wasm_bindgen_test as test;
diff --git a/tokio/tests/sync_semaphore.rs b/tokio/tests/sync_semaphore.rs
index 40a5a0802a6..51cbca6e551 100644
--- a/tokio/tests/sync_semaphore.rs
+++ b/tokio/tests/sync_semaphore.rs
@@ -1,4 +1,4 @@
-#![cfg(feature = "sync")]
+#![cfg(any(feature = "sync", feature = "full-sgx"))]
 
 #[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
 use wasm_bindgen_test::wasm_bindgen_test as test;
diff --git a/tokio/tests/sync_semaphore_owned.rs b/tokio/tests/sync_semaphore_owned.rs
index d4b12d40e45..fa420d76791 100644
--- a/tokio/tests/sync_semaphore_owned.rs
+++ b/tokio/tests/sync_semaphore_owned.rs
@@ -1,4 +1,4 @@
-#![cfg(feature = "sync")]
+#![cfg(any(feature = "sync", feature = "full-sgx"))]
 
 #[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
 use wasm_bindgen_test::wasm_bindgen_test as test;
diff --git a/tokio/tests/sync_watch.rs b/tokio/tests/sync_watch.rs
index 70cc110b937..e7d1b65299c 100644
--- a/tokio/tests/sync_watch.rs
+++ b/tokio/tests/sync_watch.rs
@@ -1,6 +1,6 @@
 #![allow(clippy::cognitive_complexity)]
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "sync")]
+#![cfg(any(feature = "sync", feature = "full-sgx"))]
 
 #[cfg(all(target_family = "wasm", not(target_os = "wasi")))]
 use wasm_bindgen_test::wasm_bindgen_test as test;
diff --git a/tokio/tests/task_blocking.rs b/tokio/tests/task_blocking.rs
index b9cce9a4aa4..1613fde72e6 100644
--- a/tokio/tests/task_blocking.rs
+++ b/tokio/tests/task_blocking.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(all(feature = "full", not(target_os = "wasi")))] // Wasi doesn't support threads
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))] // Wasi doesn't support threads
 
 use tokio::{runtime, task, time};
 use tokio_test::assert_ok;
diff --git a/tokio/tests/task_local_set.rs b/tokio/tests/task_local_set.rs
index 168a05808bd..78bc45ead0e 100644
--- a/tokio/tests/task_local_set.rs
+++ b/tokio/tests/task_local_set.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use futures::{
     future::{pending, ready},
diff --git a/tokio/tests/tcp_accept.rs b/tokio/tests/tcp_accept.rs
index d547c48daa3..9bfc94e2e21 100644
--- a/tokio/tests/tcp_accept.rs
+++ b/tokio/tests/tcp_accept.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(all(feature = "full", not(target_os = "wasi")))] // Wasi doesn't support bind
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))] // Wasi doesn't support bind
 
 use tokio::net::{TcpListener, TcpStream};
 use tokio::sync::{mpsc, oneshot};
diff --git a/tokio/tests/tcp_connect.rs b/tokio/tests/tcp_connect.rs
index 269ba8ef695..26f0d6a25d6 100644
--- a/tokio/tests/tcp_connect.rs
+++ b/tokio/tests/tcp_connect.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(all(feature = "full", not(target_os = "wasi")))] // Wasi doesn't support bind
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))] // Wasi doesn't support bind
 
 use tokio::net::{TcpListener, TcpStream};
 use tokio::sync::oneshot;
diff --git a/tokio/tests/tcp_echo.rs b/tokio/tests/tcp_echo.rs
index dfd4dd7b9f4..2bf858beb5c 100644
--- a/tokio/tests/tcp_echo.rs
+++ b/tokio/tests/tcp_echo.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(all(feature = "full", not(target_os = "wasi")))] // Wasi doesn't support bind
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))] // Wasi doesn't support bind
 
 use tokio::io::{self, AsyncReadExt, AsyncWriteExt};
 use tokio::net::{TcpListener, TcpStream};
diff --git a/tokio/tests/tcp_into_split.rs b/tokio/tests/tcp_into_split.rs
index 2a030691f64..8ffee0e50a1 100644
--- a/tokio/tests/tcp_into_split.rs
+++ b/tokio/tests/tcp_into_split.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(all(feature = "full", not(target_os = "wasi")))] // Wasi doesn't support bind
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))] // Wasi doesn't support bind
 
 use std::io::{Error, ErrorKind, Result};
 use std::io::{Read, Write};
@@ -44,6 +44,7 @@ async fn split() -> Result<()> {
             assert_eq!(peek_len1, peek_len2);
 
             let read_len = read_half.read(&mut read_buf[..]).await?;
+            #[cfg(not(target_env = "sgx"))] // peek always returns Ok(0) in SGX
             assert_eq!(peek_len1, read_len);
             assert_eq!(&read_buf[..read_len], MSG);
             Ok(())
@@ -81,6 +82,7 @@ async fn reunite() -> Result<()> {
 }
 
 /// Test that dropping the write half actually closes the stream.
+#[cfg_attr(target_env = "sgx", ignore = "Shutdown is ineffective on SGX platform")]
 #[tokio::test]
 async fn drop_write() -> Result<()> {
     const MSG: &[u8] = b"split";
diff --git a/tokio/tests/tcp_split.rs b/tokio/tests/tcp_split.rs
index 32aaa1f771b..53f350adfef 100644
--- a/tokio/tests/tcp_split.rs
+++ b/tokio/tests/tcp_split.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(all(feature = "full", not(target_os = "wasi")))] // Wasi doesn't support bind
+#![cfg(all(any(feature = "full", feature = "full-sgx"), not(target_os = "wasi")))] // Wasi doesn't support bind
 
 use std::io::Result;
 use std::io::{Read, Write};
@@ -33,6 +33,7 @@ async fn split() -> Result<()> {
     assert_eq!(peek_len1, peek_len2);
 
     let read_len = read_half.read(&mut read_buf[..]).await?;
+    #[cfg(not(target_env = "sgx"))] // peek always returns Ok(0) in SGX
     assert_eq!(peek_len1, read_len);
     assert_eq!(&read_buf[..read_len], MSG);
 
diff --git a/tokio/tests/test_clock.rs b/tokio/tests/test_clock.rs
index 891636fdb28..901eae23dbb 100644
--- a/tokio/tests/test_clock.rs
+++ b/tokio/tests/test_clock.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use tokio::time::{self, Duration, Instant};
 
diff --git a/tokio/tests/time_interval.rs b/tokio/tests/time_interval.rs
index 4f3e95b0d2a..aa8cc1fa68f 100644
--- a/tokio/tests/time_interval.rs
+++ b/tokio/tests/time_interval.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use std::pin::Pin;
 use std::task::{Context, Poll};
diff --git a/tokio/tests/time_rt.rs b/tokio/tests/time_rt.rs
index 13f888c1791..e0c58c3a87f 100644
--- a/tokio/tests/time_rt.rs
+++ b/tokio/tests/time_rt.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use tokio::time::*;
 
diff --git a/tokio/tests/time_sleep.rs b/tokio/tests/time_sleep.rs
index 6da7ada0394..6cb9369880c 100644
--- a/tokio/tests/time_sleep.rs
+++ b/tokio/tests/time_sleep.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use std::future::Future;
 use std::task::Context;
diff --git a/tokio/tests/time_timeout.rs b/tokio/tests/time_timeout.rs
index ec871cf62fe..055fdcd801a 100644
--- a/tokio/tests/time_timeout.rs
+++ b/tokio/tests/time_timeout.rs
@@ -1,5 +1,5 @@
 #![warn(rust_2018_idioms)]
-#![cfg(feature = "full")]
+#![cfg(any(feature = "full", feature = "full-sgx"))]
 
 use tokio::sync::oneshot;
 use tokio::time::{self, timeout, timeout_at, Instant};