1 files changed, 41 insertions, 0 deletions
diff --git a/vendor/unwinding/src/util.rs b/vendor/unwinding/src/util.rs
new file mode 100644
index 000000000..7c66e81fa
--- /dev/null
+++ b/vendor/unwinding/src/util.rs
@@ -0,0 +1,41 @@
+use gimli::{EndianSlice, NativeEndian, Pointer};
+
+pub type StaticSlice = EndianSlice<'static, NativeEndian>;
+
+pub unsafe fn get_unlimited_slice<'a>(start: *const u8) -> &'a [u8] {
+    // Create the largest possible slice for this address.
+    let start = start as usize;
+    let end = start.saturating_add(isize::MAX as _);
+    let len = end - start;
+    unsafe { core::slice::from_raw_parts(start as *const _, len) }
+}
+
+pub unsafe fn deref_pointer(ptr: Pointer) -> usize {
+    match ptr {
+        Pointer::Direct(x) => x as _,
+        Pointer::Indirect(x) => unsafe { *(x as *const _) },
+    }
+}
+
+#[cfg(feature = "libc")]
+pub use libc::c_int;
+
+#[cfg(not(feature = "libc"))]
+#[allow(non_camel_case_types)]
+pub type c_int = i32;
+
+#[cfg(all(
+    any(feature = "panic", feature = "panic-handler-dummy"),
+    feature = "libc"
+))]
+pub fn abort() -> ! {
+    unsafe { libc::abort() };
+}
+
+#[cfg(all(
+    any(feature = "panic", feature = "panic-handler-dummy"),
+    not(feature = "libc")
+))]
+pub fn abort() -> ! {
+    core::intrinsics::abort();
+}