[og9] Stub implementation of unwinding for AMD GCN

2019-06-25  Andrew Stubbs  <ams@codesourcery.com>

	Backport from mainline:

	libgcc/
	* config/gcn/t-amdgcn (LIB2ADD): Add unwind-gcn.c.
	* config/gcn/unwind-gcn.c: New file.

(cherry picked from openacc-gcc-9-branch commit
7ab7ce2c0e3734246a0ccbe8abe11160553e1a2f)

diff --git a/libgcc/ChangeLog.omp b/libgcc/ChangeLog.omp
index 1aaa7178df966a7e428778665bb74a5f3e08228a..45fc6aaf5301e4b16832f4b688ae44b77111462d 100644 (file)
--- a/libgcc/ChangeLog.omp
+++ b/libgcc/ChangeLog.omp
@@ -1,3 +1,10 @@
+2019-06-25  Andrew Stubbs  <ams@codesourcery.com>
+
+       Backport from mainline:
+
+       * config/gcn/t-amdgcn (LIB2ADD): Add unwind-gcn.c.
+       * config/gcn/unwind-gcn.c: New file.
+
 2019-06-25  Kwok Cheung Yeung  <kcy@codesourcery.com>
             Andrew Stubbs  <ams@codesourcery.com>
 

diff --git a/libgcc/config/gcn/t-amdgcn b/libgcc/config/gcn/t-amdgcn
index 8687c9f3d9f19d178bb48b96c34e19a151f3d7fa..adbd866a1d942269ac3d41d273915add79f0d124 100644 (file)
--- a/libgcc/config/gcn/t-amdgcn
+++ b/libgcc/config/gcn/t-amdgcn
@@ -1,5 +1,6 @@
 LIB2ADD += $(srcdir)/config/gcn/lib2-divmod.c \
-          $(srcdir)/config/gcn/lib2-divmod-hi.c
+          $(srcdir)/config/gcn/lib2-divmod-hi.c \
+          $(srcdir)/config/gcn/unwind-gcn.c
 
 LIB2ADDEH=
 LIB2FUNCS_EXCLUDE=__main

diff --git a/libgcc/config/gcn/unwind-gcn.c b/libgcc/config/gcn/unwind-gcn.c
new file mode 100644 (file)
index 0000000..bfb7028
--- /dev/null
+++ b/libgcc/config/gcn/unwind-gcn.c
@@ -0,0 +1,37 @@
+/* Stub unwinding implementation.
+
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   Contributed by Mentor Graphics
+
+   This file is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 3, or (at your option) any
+   later version.
+
+   This file 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
+   General Public License for more details.
+
+   Under Section 7 of GPL version 3, you are granted additional
+   permissions described in the GCC Runtime Library Exception, version
+   3.1, as published by the Free Software Foundation.
+
+   You should have received a copy of the GNU General Public License and
+   a copy of the GCC Runtime Library Exception along with this program;
+   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "unwind.h"
+
+_Unwind_Reason_Code
+_Unwind_Backtrace (_Unwind_Trace_Fn trace, void *trace_argument)
+{
+  return 0;
+}
+
+_Unwind_Ptr
+_Unwind_GetIPInfo (struct _Unwind_Context *c, int *ip_before_insn)
+{
+  return 0;
+}