[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/sysdeps/i386/stackinfo.h b/ap/libc/glibc/glibc-2.22/sysdeps/i386/stackinfo.h
new file mode 100644
index 0000000..ca9ff85
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/sysdeps/i386/stackinfo.h
@@ -0,0 +1,43 @@
+/* Copyright (C) 1999-2015 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
+ <http://www.gnu.org/licenses/>. */
+
+/* This file contains a bit of information about the stack allocation
+ of the processor. */
+
+#ifndef _STACKINFO_H
+#define _STACKINFO_H 1
+
+#include <elf.h>
+
+/* On x86 the stack grows down. */
+#define _STACK_GROWS_DOWN 1
+
+/* Default to an executable stack. PF_X can be overridden if PT_GNU_STACK is
+ * present, but it is presumed absent. */
+#define DEFAULT_STACK_PERMS (PF_R|PF_W|PF_X)
+
+/* Access to the stack pointer. The macros are used in alloca_account
+ for which they need to act as barriers as well, hence the additional
+ (unnecessary) parameters. */
+#define stackinfo_get_sp() \
+ ({ void *p__; asm volatile ("mov %%esp, %0" : "=r" (p__)); p__; })
+#define stackinfo_sub_sp(ptr) \
+ ({ ptrdiff_t d__; \
+ asm volatile ("sub %%esp, %0" : "=r" (d__) : "0" (ptr)); \
+ d__; })
+
+#endif /* stackinfo.h */