X-Git-Url: http://wagnertech.de/git?a=blobdiff_plain;f=i686-linux-gnu-4.7%2Fusr%2Finclude%2Fx86_64-linux-gnu%2Fbits%2Findirect-return.h;fp=i686-linux-gnu-4.7%2Fusr%2Finclude%2Fx86_64-linux-gnu%2Fbits%2Findirect-return.h;h=d1acaca3b9542bd86fe2035fa3b0a972aeedc7d1;hb=94df942c2c7bd3457276fe5b7367623cbb8c1302;hp=0000000000000000000000000000000000000000;hpb=4dd7d9155a920895ff7b1cb6b9c9c676aa62000a;p=cross.git
diff --git a/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/bits/indirect-return.h b/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/bits/indirect-return.h
new file mode 100644
index 0000000..d1acaca
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/bits/indirect-return.h
@@ -0,0 +1,37 @@
+/* Definition of __INDIRECT_RETURN. x86 version.
+ Copyright (C) 2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _UCONTEXT_H
+# error "Never include directly; use instead."
+#endif
+
+/* On x86, swapcontext returns via indirect branch when the shadow stack
+ is enabled. Define __INDIRECT_RETURN to indicate whether swapcontext
+ returns via indirect branch. */
+#if defined __CET__ && (__CET__ & 2) != 0
+# if __glibc_has_attribute (__indirect_return__)
+# define __INDIRECT_RETURN __attribute__ ((__indirect_return__))
+# else
+/* Newer compilers provide the indirect_return attribute, but without
+ it we can use returns_twice to affect the optimizer in the same
+ way and avoid unsafe optimizations. */
+# define __INDIRECT_RETURN __attribute__ ((__returns_twice__))
+# endif
+#else
+# define __INDIRECT_RETURN
+#endif