Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 24 insertions, 0 deletions

diff --git a/third_party/rust/crash-context/src/linux/getcontext.rs b/third_party/rust/crash-context/src/linux/getcontext.rs
new file mode 100644
index 0000000000..93bb5fdaff
--- /dev/null
+++ b/third_party/rust/crash-context/src/linux/getcontext.rs
@@ -0,0 +1,24 @@
+//! Implementation of [`getcontext`](https://man7.org/linux/man-pages/man3/getcontext.3.html)
+
+extern "C" {
+    /// A portable implementation of [`getcontext`](https://man7.org/linux/man-pages/man3/getcontext.3.html)
+    /// since it is not supported by all libc implementations, namely `musl`, as
+    /// it has been deprecated from POSIX for over a decade
+    ///
+    /// The implementation is ported from Breakpad, which is itself ported from
+    /// libunwind
+    #[cfg_attr(target_arch = "aarch64", allow(improper_ctypes))]
+    pub fn crash_context_getcontext(ctx: *mut super::ucontext_t) -> i32;
+}
+
+cfg_if::cfg_if! {
+    if #[cfg(target_arch = "x86_64")] {
+        mod x86_64;
+    } else if #[cfg(target_arch = "x86")] {
+        mod x86;
+    } else if #[cfg(target_arch = "aarch64")] {
+        mod aarch64;
+    } else if #[cfg(target_arch = "arm")] {
+        mod arm;
+    }
+}