Squashed 'third_party/elfutils/' content from commit 555e15e
Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/backends/s390_cfi.c b/backends/s390_cfi.c
new file mode 100644
index 0000000..cb49486
--- /dev/null
+++ b/backends/s390_cfi.c
@@ -0,0 +1,65 @@
+/* s390 ABI-specified defaults for DWARF CFI.
+ Copyright (C) 2012, 2013 Red Hat, Inc.
+ This file is part of elfutils.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of either
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at
+ your option) any later version
+
+ or
+
+ * the GNU General Public License as published by the Free
+ Software Foundation; either version 2 of the License, or (at
+ your option) any later version
+
+ or both in parallel, as here.
+
+ elfutils 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.
+
+ You should have received copies of the GNU General Public License and
+ the GNU Lesser General Public License along with this program. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <dwarf.h>
+
+#define BACKEND s390_
+#include "libebl_CPU.h"
+
+int
+s390_abi_cfi (Ebl *ebl, Dwarf_CIE *abi_info)
+{
+ static const uint8_t abi_cfi[] =
+ {
+ /* This instruction is provided in every CIE. It is not repeated here:
+ DW_CFA_def_cfa, ULEB128_7 (15), ULEB128_7 (96) */
+ /* r14 is not callee-saved but it needs to be preserved as it is pre-set
+ by the caller. */
+ DW_CFA_same_value, ULEB128_7 (14), /* r14 */
+
+ /* Callee-saved regs. */
+#define SV(n) DW_CFA_same_value, ULEB128_7 (n)
+ SV (6), SV (7), SV (8), SV (9), SV (10), /* r6-r13, r15 */
+ SV (11), SV (12), SV (13), SV (15),
+ SV (16 + 8), SV (16 + 9), SV (16 + 10), SV (16 + 11), /* f8-f15 */
+ SV (16 + 12), SV (16 + 13), SV (16 + 14), SV (16 + 15)
+#undef SV
+ };
+
+ abi_info->initial_instructions = abi_cfi;
+ abi_info->initial_instructions_end = &abi_cfi[sizeof abi_cfi];
+ abi_info->data_alignment_factor = ebl->class == ELFCLASS64 ? 8 : 4;
+
+ abi_info->return_address_register = 14;
+
+ return 0;
+}