1 files changed, 45 insertions, 0 deletions
diff --git a/ctr-std/src/sys/horizon/backtrace/printing/dladdr.rs b/ctr-std/src/sys/horizon/backtrace/printing/dladdr.rs
new file mode 100644
index 0000000..bc56fd6
--- /dev/null
+++ b/ctr-std/src/sys/horizon/backtrace/printing/dladdr.rs
@@ -0,0 +1,45 @@
+// Copyright 2014-2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use io;
+use intrinsics;
+use ffi::CStr;
+use libc;
+use sys::backtrace::BacktraceContext;
+use sys_common::backtrace::Frame;
+
+pub fn resolve_symname<F>(frame: Frame,
+                          callback: F,
+                          _: &BacktraceContext) -> io::Result<()>
+    where F: FnOnce(Option<&str>) -> io::Result<()>
+{
+    unsafe {
+        let mut info: Dl_info = intrinsics::init();
+        let symname = if dladdr(frame.exact_position as *mut _, &mut info) == 0 ||
+                         info.dli_sname.is_null() {
+            None
+        } else {
+            CStr::from_ptr(info.dli_sname).to_str().ok()
+        };
+        callback(symname)
+    }
+}
+
+#[repr(C)]
+struct Dl_info {
+    dli_fname: *const libc::c_char,
+    dli_fbase: *mut libc::c_void,
+    dli_sname: *const libc::c_char,
+    dli_saddr: *mut libc::c_void,
+}
+
+extern {
+    fn dladdr(addr: *const libc::c_void, info: *mut Dl_info) -> libc::c_int;
+}