--- rustc-1.64.0+dfsg1.orig/vendor/rustix/src/imp/libc/process/types.rs
+++ rustc-1.64.0+dfsg1/vendor/rustix/src/imp/libc/process/types.rs
@@ -199,7 +199,12 @@ pub enum Signal {
         target_os = "openbsd",
         all(
             any(target_os = "android", target_os = "linux"),
-            any(target_arch = "mips", target_arch = "mips64"),
+            any(
+                target_arch = "mips",
+                target_arch = "mips64",
+                target_arch = "sparc",
+                target_arch = "sparc64"
+            ),
         )
     )))]
     Stkflt = c::SIGSTKFLT,
@@ -276,7 +281,12 @@ impl Signal {
                 target_os = "openbsd",
                 all(
                     any(target_os = "android", target_os = "linux"),
-                    any(target_arch = "mips", target_arch = "mips64"),
+                    any(
+                        target_arch = "mips",
+                        target_arch = "mips64",
+                        target_arch = "sparc",
+                        target_arch = "sparc64"
+                    ),
                 )
             )))]
             c::SIGSTKFLT => Some(Self::Stkflt),
--- rustc-1.64.0+dfsg1.orig/vendor/rustix/src/imp/libc/termios/types.rs
+++ rustc-1.64.0+dfsg1/vendor/rustix/src/imp/libc/termios/types.rs
@@ -704,6 +704,8 @@ pub const B2000000: Speed = c::B2000000;
 
 /// `B2500000`
 #[cfg(not(any(
+    target_arch = "sparc",
+    target_arch = "sparc64",
     target_os = "dragonfly",
     target_os = "freebsd",
     target_os = "ios",
@@ -715,6 +717,8 @@ pub const B2500000: Speed = c::B2500000;
 
 /// `B3000000`
 #[cfg(not(any(
+    target_arch = "sparc",
+    target_arch = "sparc64",
     target_os = "dragonfly",
     target_os = "freebsd",
     target_os = "ios",
@@ -726,6 +730,8 @@ pub const B3000000: Speed = c::B3000000;
 
 /// `B3500000`
 #[cfg(not(any(
+    target_arch = "sparc",
+    target_arch = "sparc64",
     target_os = "dragonfly",
     target_os = "freebsd",
     target_os = "ios",
@@ -737,6 +743,8 @@ pub const B3500000: Speed = c::B3500000;
 
 /// `B4000000`
 #[cfg(not(any(
+    target_arch = "sparc",
+    target_arch = "sparc64",
     target_os = "dragonfly",
     target_os = "freebsd",
     target_os = "ios",
--- rustc-1.64.0+dfsg1.orig/vendor/rustix/src/imp/linux_raw/termios/types.rs
+++ rustc-1.64.0+dfsg1/vendor/rustix/src/imp/linux_raw/termios/types.rs
@@ -338,15 +338,19 @@ pub const B1500000: Speed = linux_raw_sy
 pub const B2000000: Speed = linux_raw_sys::general::B2000000;
 
 /// `B2500000`
+#[cfg(not(any(target_arch = "sparc", target_arch = "sparc64",)))]
 pub const B2500000: Speed = linux_raw_sys::general::B2500000;
 
 /// `B3000000`
+#[cfg(not(any(target_arch = "sparc", target_arch = "sparc64",)))]
 pub const B3000000: Speed = linux_raw_sys::general::B3000000;
 
 /// `B3500000`
+#[cfg(not(any(target_arch = "sparc", target_arch = "sparc64",)))]
 pub const B3500000: Speed = linux_raw_sys::general::B3500000;
 
 /// `B4000000`
+#[cfg(not(any(target_arch = "sparc", target_arch = "sparc64",)))]
 pub const B4000000: Speed = linux_raw_sys::general::B4000000;
 
 /// `CSIZE`
--- rustc-1.64.0+dfsg1.orig/vendor/rustix/src/termios/constants.rs
+++ rustc-1.64.0+dfsg1/vendor/rustix/src/termios/constants.rs
@@ -45,6 +45,8 @@ pub use imp::termios::types::B2000000;
 )))]
 pub use imp::termios::types::B2500000;
 #[cfg(not(any(
+    target_arch = "sparc",
+    target_arch = "sparc64",
     target_os = "dragonfly",
     target_os = "freebsd",
     target_os = "ios",
@@ -54,6 +56,8 @@ pub use imp::termios::types::B2500000;
 )))]
 pub use imp::termios::types::B3000000;
 #[cfg(not(any(
+    target_arch = "sparc",
+    target_arch = "sparc64",
     target_os = "dragonfly",
     target_os = "freebsd",
     target_os = "ios",
@@ -63,6 +67,8 @@ pub use imp::termios::types::B3000000;
 )))]
 pub use imp::termios::types::B3500000;
 #[cfg(not(any(
+    target_arch = "sparc",
+    target_arch = "sparc64",
     target_os = "dragonfly",
     target_os = "freebsd",
     target_os = "ios",
@@ -74,6 +80,8 @@ pub use imp::termios::types::B4000000;
 #[cfg(not(any(target_os = "ios", target_os = "macos", target_os = "openbsd")))]
 pub use imp::termios::types::B460800;
 #[cfg(not(any(
+    target_arch = "sparc",
+    target_arch = "sparc64",
     target_os = "dragonfly",
     target_os = "freebsd",
     target_os = "illumos",
@@ -688,6 +696,8 @@ pub fn speed_value(speed: imp::termios::
         )))]
         imp::termios::types::B2500000 => Some(2_500_000),
         #[cfg(not(any(
+            target_arch = "sparc",
+            target_arch = "sparc64",
             target_os = "dragonfly",
             target_os = "freebsd",
             target_os = "ios",
@@ -697,6 +707,8 @@ pub fn speed_value(speed: imp::termios::
         )))]
         imp::termios::types::B3000000 => Some(3_000_000),
         #[cfg(not(any(
+            target_arch = "sparc",
+            target_arch = "sparc64",
             target_os = "dragonfly",
             target_os = "freebsd",
             target_os = "ios",
@@ -706,6 +718,8 @@ pub fn speed_value(speed: imp::termios::
         )))]
         imp::termios::types::B3500000 => Some(3_500_000),
         #[cfg(not(any(
+            target_arch = "sparc",
+            target_arch = "sparc64",
             target_os = "dragonfly",
             target_os = "freebsd",
             target_os = "ios",
--- rustc-1.64.0+dfsg1.orig/vendor/rustix/src/termios/mod.rs
+++ rustc-1.64.0+dfsg1/vendor/rustix/src/termios/mod.rs
@@ -44,6 +44,8 @@ pub use constants::B1500000;
 )))]
 pub use constants::B2000000;
 #[cfg(not(any(
+    target_arch = "sparc",
+    target_arch = "sparc64",
     target_os = "dragonfly",
     target_os = "freebsd",
     target_os = "ios",
@@ -53,6 +55,8 @@ pub use constants::B2000000;
 )))]
 pub use constants::B2500000;
 #[cfg(not(any(
+    target_arch = "sparc",
+    target_arch = "sparc64",
     target_os = "dragonfly",
     target_os = "freebsd",
     target_os = "ios",
@@ -62,6 +66,8 @@ pub use constants::B2500000;
 )))]
 pub use constants::B3000000;
 #[cfg(not(any(
+    target_arch = "sparc",
+    target_arch = "sparc64",
     target_os = "dragonfly",
     target_os = "freebsd",
     target_os = "ios",
@@ -71,6 +77,8 @@ pub use constants::B3000000;
 )))]
 pub use constants::B3500000;
 #[cfg(not(any(
+    target_arch = "sparc",
+    target_arch = "sparc64",
     target_os = "dragonfly",
     target_os = "freebsd",
     target_os = "ios",
--- rustc-1.64.0+dfsg1.orig/vendor/rustix/tests/time/y2038.rs
+++ rustc-1.64.0+dfsg1/vendor/rustix/tests/time/y2038.rs
@@ -14,6 +14,7 @@
 #[cfg(not(all(target_env = "musl", target_pointer_width = "32")))]
 #[cfg(not(all(target_os = "android", target_pointer_width = "32")))]
 #[cfg(not(all(target_os = "emscripten", target_pointer_width = "32")))]
+#[cfg(not(all(target_os = "linux", target_arch = "sparc")))]
 #[test]
 fn test_y2038() {
     use rustix::time::{Secs, Timespec};