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-rw-r--r--library/std/Cargo.toml11
-rw-r--r--library/std/src/env.rs2
-rw-r--r--library/std/src/sys/net/connection/uefi/mod.rs32
-rw-r--r--library/std/src/sys/net/connection/uefi/tcp.rs42
-rw-r--r--library/std/src/sys/net/connection/uefi/tcp4.rs18
-rw-r--r--library/std/src/sys/pal/sgx/abi/usercalls/mod.rs2
-rw-r--r--library/std/src/sys/pal/uefi/helpers.rs4
-rw-r--r--library/std/src/sys/pal/unix/os.rs5
-rw-r--r--library/std/src/sys/thread_local/guard/windows.rs17
-rw-r--r--library/std/src/thread/mod.rs8
10 files changed, 112 insertions, 29 deletions
diff --git a/library/std/Cargo.toml b/library/std/Cargo.toml
index 5c3132a7375..f1b38813d44 100644
--- a/library/std/Cargo.toml
+++ b/library/std/Cargo.toml
@@ -23,9 +23,7 @@ unwind = { path = "../unwind" }
 hashbrown = { version = "0.15", default-features = false, features = [
     'rustc-dep-of-std',
 ] }
-std_detect = { path = "../stdarch/crates/std_detect", public = true, default-features = false, features = [
-    'rustc-dep-of-std',
-] }
+std_detect = { path = "../std_detect", public = true }
 
 # Dependencies of the `backtrace` crate
 rustc-demangle = { version = "0.1.24", features = ['rustc-dep-of-std'] }
@@ -65,10 +63,10 @@ rand = { version = "0.9.0", default-features = false, features = ["alloc"] }
 rand_xorshift = "0.4.0"
 
 [target.'cfg(any(all(target_family = "wasm", target_os = "unknown"), target_os = "xous", all(target_vendor = "fortanix", target_env = "sgx")))'.dependencies]
-dlmalloc = { version = "0.2.4", features = ['rustc-dep-of-std'] }
+dlmalloc = { version = "0.2.10", features = ['rustc-dep-of-std'] }
 
 [target.x86_64-fortanix-unknown-sgx.dependencies]
-fortanix-sgx-abi = { version = "0.5.0", features = [
+fortanix-sgx-abi = { version = "0.6.1", features = [
     'rustc-dep-of-std',
 ], public = true }
 
@@ -118,8 +116,7 @@ optimize_for_size = ["core/optimize_for_size", "alloc/optimize_for_size"]
 debug_refcell = ["core/debug_refcell"]
 
 
-# Enable std_detect default features for stdarch/crates/std_detect:
-# https://github.com/rust-lang/stdarch/blob/master/crates/std_detect/Cargo.toml
+# Enable std_detect features:
 std_detect_file_io = ["std_detect/std_detect_file_io"]
 std_detect_dlsym_getauxval = ["std_detect/std_detect_dlsym_getauxval"]
 
diff --git a/library/std/src/env.rs b/library/std/src/env.rs
index 6d7d576b32a..9f17ff76445 100644
--- a/library/std/src/env.rs
+++ b/library/std/src/env.rs
@@ -617,7 +617,7 @@ impl Error for JoinPathsError {
 /// # Unix
 ///
 /// - Returns the value of the 'HOME' environment variable if it is set
-///   (including to an empty string).
+///   (and not an empty string).
 /// - Otherwise, it tries to determine the home directory by invoking the `getpwuid_r` function
 ///   using the UID of the current user. An empty home directory field returned from the
 ///   `getpwuid_r` function is considered to be a valid value.
diff --git a/library/std/src/sys/net/connection/uefi/mod.rs b/library/std/src/sys/net/connection/uefi/mod.rs
index 884cbd4ac1d..16e3487a174 100644
--- a/library/std/src/sys/net/connection/uefi/mod.rs
+++ b/library/std/src/sys/net/connection/uefi/mod.rs
@@ -86,11 +86,11 @@ impl TcpStream {
     }
 
     pub fn peer_addr(&self) -> io::Result<SocketAddr> {
-        unsupported()
+        self.inner.peer_addr()
     }
 
     pub fn socket_addr(&self) -> io::Result<SocketAddr> {
-        unsupported()
+        self.inner.socket_addr()
     }
 
     pub fn shutdown(&self, _: Shutdown) -> io::Result<()> {
@@ -114,7 +114,7 @@ impl TcpStream {
     }
 
     pub fn nodelay(&self) -> io::Result<bool> {
-        unsupported()
+        self.inner.nodelay()
     }
 
     pub fn set_ttl(&self, _: u32) -> io::Result<()> {
@@ -122,7 +122,7 @@ impl TcpStream {
     }
 
     pub fn ttl(&self) -> io::Result<u32> {
-        unsupported()
+        self.inner.ttl()
     }
 
     pub fn take_error(&self) -> io::Result<Option<io::Error>> {
@@ -140,7 +140,9 @@ impl fmt::Debug for TcpStream {
     }
 }
 
-pub struct TcpListener(!);
+pub struct TcpListener {
+    inner: tcp::Tcp,
+}
 
 impl TcpListener {
     pub fn bind(_: io::Result<&SocketAddr>) -> io::Result<TcpListener> {
@@ -148,45 +150,45 @@ impl TcpListener {
     }
 
     pub fn socket_addr(&self) -> io::Result<SocketAddr> {
-        self.0
+        unsupported()
     }
 
     pub fn accept(&self) -> io::Result<(TcpStream, SocketAddr)> {
-        self.0
+        unsupported()
     }
 
     pub fn duplicate(&self) -> io::Result<TcpListener> {
-        self.0
+        unsupported()
     }
 
     pub fn set_ttl(&self, _: u32) -> io::Result<()> {
-        self.0
+        unsupported()
     }
 
     pub fn ttl(&self) -> io::Result<u32> {
-        self.0
+        self.inner.ttl()
     }
 
     pub fn set_only_v6(&self, _: bool) -> io::Result<()> {
-        self.0
+        unsupported()
     }
 
     pub fn only_v6(&self) -> io::Result<bool> {
-        self.0
+        unsupported()
     }
 
     pub fn take_error(&self) -> io::Result<Option<io::Error>> {
-        self.0
+        unsupported()
     }
 
     pub fn set_nonblocking(&self, _: bool) -> io::Result<()> {
-        self.0
+        unsupported()
     }
 }
 
 impl fmt::Debug for TcpListener {
     fn fmt(&self, _f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        self.0
+        todo!()
     }
 }
 
diff --git a/library/std/src/sys/net/connection/uefi/tcp.rs b/library/std/src/sys/net/connection/uefi/tcp.rs
index 1152f69446e..aac97007bbf 100644
--- a/library/std/src/sys/net/connection/uefi/tcp.rs
+++ b/library/std/src/sys/net/connection/uefi/tcp.rs
@@ -1,6 +1,8 @@
 use super::tcp4;
 use crate::io;
 use crate::net::SocketAddr;
+use crate::ptr::NonNull;
+use crate::sys::{helpers, unsupported};
 use crate::time::Duration;
 
 pub(crate) enum Tcp {
@@ -31,4 +33,44 @@ impl Tcp {
             Self::V4(client) => client.read(buf, timeout),
         }
     }
+
+    pub(crate) fn ttl(&self) -> io::Result<u32> {
+        match self {
+            Self::V4(client) => client.get_mode_data().map(|x| x.time_to_live.into()),
+        }
+    }
+
+    pub(crate) fn nodelay(&self) -> io::Result<bool> {
+        match self {
+            Self::V4(client) => {
+                let temp = client.get_mode_data()?;
+                match NonNull::new(temp.control_option) {
+                    Some(x) => unsafe { Ok(x.as_ref().enable_nagle.into()) },
+                    None => unsupported(),
+                }
+            }
+        }
+    }
+
+    pub fn peer_addr(&self) -> io::Result<SocketAddr> {
+        match self {
+            Self::V4(client) => client.get_mode_data().map(|x| {
+                SocketAddr::new(
+                    helpers::ipv4_from_r_efi(x.access_point.remote_address).into(),
+                    x.access_point.remote_port,
+                )
+            }),
+        }
+    }
+
+    pub fn socket_addr(&self) -> io::Result<SocketAddr> {
+        match self {
+            Self::V4(client) => client.get_mode_data().map(|x| {
+                SocketAddr::new(
+                    helpers::ipv4_from_r_efi(x.access_point.station_address).into(),
+                    x.access_point.station_port,
+                )
+            }),
+        }
+    }
 }
diff --git a/library/std/src/sys/net/connection/uefi/tcp4.rs b/library/std/src/sys/net/connection/uefi/tcp4.rs
index 6342718929a..75862ff247b 100644
--- a/library/std/src/sys/net/connection/uefi/tcp4.rs
+++ b/library/std/src/sys/net/connection/uefi/tcp4.rs
@@ -67,6 +67,24 @@ impl Tcp4 {
         if r.is_error() { Err(crate::io::Error::from_raw_os_error(r.as_usize())) } else { Ok(()) }
     }
 
+    pub(crate) fn get_mode_data(&self) -> io::Result<tcp4::ConfigData> {
+        let mut config_data = tcp4::ConfigData::default();
+        let protocol = self.protocol.as_ptr();
+
+        let r = unsafe {
+            ((*protocol).get_mode_data)(
+                protocol,
+                crate::ptr::null_mut(),
+                &mut config_data,
+                crate::ptr::null_mut(),
+                crate::ptr::null_mut(),
+                crate::ptr::null_mut(),
+            )
+        };
+
+        if r.is_error() { Err(io::Error::from_raw_os_error(r.as_usize())) } else { Ok(config_data) }
+    }
+
     pub(crate) fn connect(&self, timeout: Option<Duration>) -> io::Result<()> {
         let evt = unsafe { self.create_evt() }?;
         let completion_token =
diff --git a/library/std/src/sys/pal/sgx/abi/usercalls/mod.rs b/library/std/src/sys/pal/sgx/abi/usercalls/mod.rs
index dea44124f45..5041770faf6 100644
--- a/library/std/src/sys/pal/sgx/abi/usercalls/mod.rs
+++ b/library/std/src/sys/pal/sgx/abi/usercalls/mod.rs
@@ -267,7 +267,7 @@ pub fn send(event_set: u64, tcs: Option<Tcs>) -> IoResult<()> {
 /// Usercall `insecure_time`. See the ABI documentation for more information.
 #[unstable(feature = "sgx_platform", issue = "56975")]
 pub fn insecure_time() -> Duration {
-    let t = unsafe { raw::insecure_time() };
+    let t = unsafe { raw::insecure_time().0 };
     Duration::new(t / 1_000_000_000, (t % 1_000_000_000) as _)
 }
 
diff --git a/library/std/src/sys/pal/uefi/helpers.rs b/library/std/src/sys/pal/uefi/helpers.rs
index 420481648a7..271dc4d11de 100644
--- a/library/std/src/sys/pal/uefi/helpers.rs
+++ b/library/std/src/sys/pal/uefi/helpers.rs
@@ -761,3 +761,7 @@ impl Drop for OwnedEvent {
 pub(crate) const fn ipv4_to_r_efi(addr: crate::net::Ipv4Addr) -> efi::Ipv4Address {
     efi::Ipv4Address { addr: addr.octets() }
 }
+
+pub(crate) const fn ipv4_from_r_efi(ip: efi::Ipv4Address) -> crate::net::Ipv4Addr {
+    crate::net::Ipv4Addr::new(ip.addr[0], ip.addr[1], ip.addr[2], ip.addr[3])
+}
diff --git a/library/std/src/sys/pal/unix/os.rs b/library/std/src/sys/pal/unix/os.rs
index 850bdfdf5b5..0e68313cc3e 100644
--- a/library/std/src/sys/pal/unix/os.rs
+++ b/library/std/src/sys/pal/unix/os.rs
@@ -633,7 +633,10 @@ pub fn temp_dir() -> PathBuf {
 }
 
 pub fn home_dir() -> Option<PathBuf> {
-    return crate::env::var_os("HOME").or_else(|| unsafe { fallback() }).map(PathBuf::from);
+    return crate::env::var_os("HOME")
+        .filter(|s| !s.is_empty())
+        .or_else(|| unsafe { fallback() })
+        .map(PathBuf::from);
 
     #[cfg(any(
         target_os = "android",
diff --git a/library/std/src/sys/thread_local/guard/windows.rs b/library/std/src/sys/thread_local/guard/windows.rs
index b15a0d7c0bd..f747129465d 100644
--- a/library/std/src/sys/thread_local/guard/windows.rs
+++ b/library/std/src/sys/thread_local/guard/windows.rs
@@ -58,7 +58,7 @@
 //! We don't actually use the `/INCLUDE` linker flag here like the article
 //! mentions because the Rust compiler doesn't propagate linker flags, but
 //! instead we use a shim function which performs a volatile 1-byte load from
-//! the address of the symbol to ensure it sticks around.
+//! the address of the _tls_used symbol to ensure it sticks around.
 //!
 //! [1]: https://www.codeproject.com/Articles/8113/Thread-Local-Storage-The-C-Way
 //! [2]: https://github.com/ChromiumWebApps/chromium/blob/master/base/threading/thread_local_storage_win.cc#L42
@@ -68,9 +68,20 @@ use core::ffi::c_void;
 use crate::ptr;
 use crate::sys::c;
 
+unsafe extern "C" {
+    #[link_name = "_tls_used"]
+    static TLS_USED: u8;
+}
 pub fn enable() {
-    // When destructors are used, we don't want LLVM eliminating CALLBACK for any
-    // reason. Once the symbol makes it to the linker, it will do the rest.
+    // When destructors are used, we need to add a reference to the _tls_used
+    // symbol provided by the CRT, otherwise the TLS support code will get
+    // GC'd by the linker and our callback won't be called.
+    unsafe { ptr::from_ref(&TLS_USED).read_volatile() };
+    // We also need to reference CALLBACK to make sure it does not get GC'd
+    // by the compiler/LLVM. The callback will end up inside the TLS
+    // callback array pointed to by _TLS_USED through linker shenanigans,
+    // but as far as the compiler is concerned, it looks like the data is
+    // unused, so we need this hack to prevent it from disappearing.
     unsafe { ptr::from_ref(&CALLBACK).read_volatile() };
 }
 
diff --git a/library/std/src/thread/mod.rs b/library/std/src/thread/mod.rs
index 6075173db47..8cd1e0163a1 100644
--- a/library/std/src/thread/mod.rs
+++ b/library/std/src/thread/mod.rs
@@ -1399,6 +1399,11 @@ where
 }
 
 /// The internal representation of a `Thread` handle
+///
+/// We explicitly set the alignment for our guarantee in Thread::into_raw. This
+/// allows applications to stuff extra metadata bits into the alignment, which
+/// can be rather useful when working with atomics.
+#[repr(align(8))]
 struct Inner {
     name: Option<ThreadNameString>,
     id: ThreadId,
@@ -1582,7 +1587,8 @@ impl Thread {
     /// Consumes the `Thread`, returning a raw pointer.
     ///
     /// To avoid a memory leak the pointer must be converted
-    /// back into a `Thread` using [`Thread::from_raw`].
+    /// back into a `Thread` using [`Thread::from_raw`]. The pointer is
+    /// guaranteed to be aligned to at least 8 bytes.
     ///
     /// # Examples
     ///
generated by cgit-pink 1.4.1-3-g733a5 (git 2.37.1) at 2025-11-01 06:32:26 +0000