1 files changed, 49 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h b/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h
new file mode 100644
index 0000000000..258703dc88
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/sigcontextinfo.h
@@ -0,0 +1,49 @@
+/* Copyright (C) 1999-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Philip Blundell <philb@gnu.org>, 1999.
+
+   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/>.  */
+
+#include <sys/ucontext.h>
+#include "kernel-features.h"
+
+#define SIGCONTEXT siginfo_t *_si, struct ucontext *
+#define SIGCONTEXT_EXTRA_ARGS _si,
+
+/* The sigcontext structure changed between 2.0 and 2.1 kernels.  On any
+   modern system we should be able to assume that the "new" format will be
+   in use.  */
+
+#define GET_PC(ctx)	((void *) (ctx)->uc_mcontext.arm_pc)
+#define GET_FRAME(ctx)	ADVANCE_STACK_FRAME ((void *) ctx->uc_mcontext.arm_fp)
+#define GET_STACK(ctx)	((void *) (ctx)->uc_mcontext.arm_sp)
+
+#define ADVANCE_STACK_FRAME(frm)	\
+			((struct layout *)frm - 1)
+
+#define CALL_SIGHANDLER(handler, signo, ctx) \
+  (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))
+
+/* There is no reliable way to get the sigcontext unless we use a
+   three-argument signal handler.  */
+#define __sigaction(sig, act, oact) ({ \
+  (act)->sa_flags |= SA_SIGINFO; \
+  (__sigaction) (sig, act, oact); \
+})
+
+#define sigaction(sig, act, oact) ({ \
+  (act)->sa_flags |= SA_SIGINFO; \
+  (sigaction) (sig, act, oact); \
+})