1 files changed, 0 insertions, 47 deletions
diff --git a/vendor/portable-atomic/src/imp/interrupt/xtensa.rs b/vendor/portable-atomic/src/imp/interrupt/xtensa.rs
deleted file mode 100644
index bc6d117..0000000
--- a/vendor/portable-atomic/src/imp/interrupt/xtensa.rs
+++ /dev/null
@@ -1,47 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0 OR MIT
-
-// Refs:
-// - Xtensa Instruction Set Architecture (ISA) Reference Manual https://0x04.net/~mwk/doc/xtensa.pdf
-// - Linux kernel's Xtensa atomic implementation https://github.com/torvalds/linux/blob/v6.1/arch/xtensa/include/asm/atomic.h
-
-use core::arch::asm;
-
-pub(super) use core::sync::atomic;
-
-pub(super) type State = u32;
-
-/// Disables interrupts and returns the previous interrupt state.
-#[inline]
-pub(super) fn disable() -> State {
-    let r: State;
-    // SAFETY: reading the PS special register and disabling all interrupts is safe.
-    // (see module-level comments of interrupt/mod.rs on the safety of using privileged instructions)
-    unsafe {
-        // Do not use `nomem` and `readonly` because prevent subsequent memory accesses from being reordered before interrupts are disabled.
-        // Interrupt level 15 to disable all interrupts.
-        // SYNC after RSIL is not required.
-        asm!("rsil {0}, 15", out(reg) r, options(nostack));
-    }
-    r
-}
-
-/// Restores the previous interrupt state.
-///
-/// # Safety
-///
-/// The state must be the one retrieved by the previous `disable`.
-#[inline]
-pub(super) unsafe fn restore(r: State) {
-    // SAFETY: the caller must guarantee that the state was retrieved by the previous `disable`,
-    // and we've checked that interrupts were enabled before disabling interrupts.
-    unsafe {
-        // Do not use `nomem` and `readonly` because prevent preceding memory accesses from being reordered after interrupts are enabled.
-        // SYNC after WSR is required to guarantee that subsequent RSIL read the written value.
-        asm!(
-            "wsr.ps {0}",
-            "rsync",
-            in(reg) r,
-            options(nostack),
-        );
-    }
-}