Create entry points for unwind frame registry in libstd.

2 files changed, 25 insertions, 0 deletions

diff --git a/src/libstd/sys/common/libunwind.rs b/src/libstd/sys/common/libunwind.rs
index 04f677a90c4..74d334bd062 100644
--- a/src/libstd/sys/common/libunwind.rs
+++ b/src/libstd/sys/common/libunwind.rs
@@ -128,6 +128,10 @@ extern {}
 #[link(name = "c++abi")]
 extern {}
 
+#[cfg(all(target_os = "windows", target_env="gnu"))]
+#[link(name = "gcc_eh")]
+extern {}
+
 extern "C" {
     // iOS on armv7 uses SjLj exceptions and requires to link
     // against corresponding routine (..._SjLj_...)
diff --git a/src/libstd/sys/common/unwind/gcc.rs b/src/libstd/sys/common/unwind/gcc.rs
index 5ee14d9f57a..6d82eb7dfb1 100644
--- a/src/libstd/sys/common/unwind/gcc.rs
+++ b/src/libstd/sys/common/unwind/gcc.rs
@@ -238,3 +238,24 @@ pub mod eabi {
 unsafe extern fn rust_eh_unwind_resume(panic_ctx: *mut u8) -> ! {
     uw::_Unwind_Resume(panic_ctx as *mut uw::_Unwind_Exception);
 }
+
+#[cfg(all(target_os="windows", target_arch = "x86", target_env="gnu"))]
+pub mod eh_frame_registry {
+    #[link(name = "gcc_eh")]
+    extern {
+        fn __register_frame_info(eh_frame_begin: *const u8, object: *mut u8);
+        fn __deregister_frame_info(eh_frame_begin: *const u8, object: *mut u8);
+    }
+    #[cfg(not(test))]
+    #[no_mangle]
+    pub unsafe extern fn rust_eh_register_frames(eh_frame_begin: *const u8,
+                                                 object: *mut u8) {
+        __register_frame_info(eh_frame_begin, object);
+    }
+    #[cfg(not(test))]
+    #[no_mangle]
+    pub  unsafe extern fn rust_eh_unregister_frames(eh_frame_begin: *const u8,
+                                                   object: *mut u8) {
+        __deregister_frame_info(eh_frame_begin, object);
+    }
+}