summary refs log tree commit diff
path: root/src/ci/docker/dist-fuchsia/compiler-rt-dso-handle.patch
blob: 0b702894bb216481125219d51de73ce4fb69cf4d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
diff --git a/lib/builtins/CMakeLists.txt b/lib/builtins/CMakeLists.txt
index fc4384af2..b442264c0 100644
--- a/lib/builtins/CMakeLists.txt
+++ b/lib/builtins/CMakeLists.txt
@@ -194,6 +194,12 @@ if(APPLE)
     atomic_thread_fence.c)
 endif()
 
+if(FUCHSIA)
+  set(GENERIC_SOURCES
+    ${GENERIC_SOURCES}
+    dso_handle.c)
+endif()
+
 if(NOT WIN32 OR MINGW)
   set(GENERIC_SOURCES
       ${GENERIC_SOURCES}
diff --git a/lib/builtins/dso_handle.c b/lib/builtins/dso_handle.c
new file mode 100644
index 000000000..7766cd0aa
--- /dev/null
+++ b/lib/builtins/dso_handle.c
@@ -0,0 +1,18 @@
+/* ===-- dso_handle.c - Provide __dso_handle -------------------------------===
+ *
+ *               The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+/* __dso_handle symbol is mandated by C++ ABI with a value which is an address
+ * in one of the object's segments, and as such this symbol has to be included
+ * statically and cannot be a part of a shared library. Traditionally, it has
+ * been defined in crtbegin.o but there's no principled reason for it to be
+ * there. We defined this symbol in the builtin library which is built as a
+ * static library and always included in the final link.
+ */
+__attribute__((visibility("hidden"))) void *const __dso_handle;