unwind: disable executable stacks
Similar to compiler-rt, ensure that we disable executable stacks for the custom
assembly.
llvm-svn: 277868
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: f7e452491052ba0de2c71afb979d6af2a2f260a9
diff --git a/src/assembly.h b/src/assembly.h
index f46a24d..06b29b3 100644
--- a/src/assembly.h
+++ b/src/assembly.h
@@ -35,19 +35,34 @@
#define SYMBOL_NAME(name) GLUE(__USER_LABEL_PREFIX__, name)
#if defined(__APPLE__)
+
#define SYMBOL_IS_FUNC(name)
+#define NO_EXEC_STACK_DIRECTIVE
+
#elif defined(__ELF__)
+
#if defined(__arm__)
#define SYMBOL_IS_FUNC(name) .type name,%function
#else
#define SYMBOL_IS_FUNC(name) .type name,@function
#endif
+
+#if defined(__GNU__) || defined(__ANDROID__) || defined(__FreeBSD__)
+#define NO_EXEC_STACK_DIRECTIVE .section .note.GNU-stack,"",%progbits
#else
+#define NO_EXEC_STACK_DIRECTIVE
+#endif
+
+#else
+
#define SYMBOL_IS_FUNC(name) \
.def name SEPARATOR \
.scl 2 SEPARATOR \
.type 32 SEPARATOR \
.endef
+
+#define NO_EXEC_STACK_DIRECTIVE
+
#endif
#define DEFINE_LIBUNWIND_FUNCTION(name) \