1 files changed, 71 insertions, 0 deletions
diff --git a/src/s390x/init.h b/src/s390x/init.h
new file mode 100644
index 00000000..86ced38f
--- /dev/null
+++ b/src/s390x/init.h
@@ -0,0 +1,71 @@
+/* libunwind - a platform-independent unwind library
+   Copyright (C) 2002 Hewlett-Packard Co
+        Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
+
+   Modified for x86_64 by Max Asbock <masbock@us.ibm.com>
+   Modified for s390x by Michael Munday <mike.munday@ibm.com>
+
+This file is part of libunwind.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
+
+#include "unwind_i.h"
+
+static inline int
+common_init (struct cursor *c, unsigned use_prev_instr)
+{
+  int ret;
+  int i;
+
+  for (i = UNW_S390X_R0; i <= UNW_S390X_R15; ++i) {
+    c->dwarf.loc[i] = DWARF_REG_LOC(&c->dwarf, i);
+  }
+  for (i = UNW_S390X_F0; i <= UNW_S390X_F15; ++i) {
+    c->dwarf.loc[i] = DWARF_FPREG_LOC(&c->dwarf, i);
+  }
+  /* IP isn't a real register, it is encoded in the PSW */
+  c->dwarf.loc[UNW_S390X_IP] = DWARF_REG_LOC(&c->dwarf, UNW_S390X_IP);
+
+  ret = dwarf_get (&c->dwarf, c->dwarf.loc[UNW_S390X_IP], &c->dwarf.ip);
+  if (ret < 0)
+    return ret;
+
+  /* Normally the CFA offset on s390x is biased, however this is taken
+     into account by the CFA offset in dwarf_step, so here we just mark
+     make it equal to the stack pointer.  */
+  ret = dwarf_get (&c->dwarf, DWARF_REG_LOC (&c->dwarf, UNW_S390X_R15),
+                   &c->dwarf.cfa);
+  if (ret < 0)
+    return ret;
+
+  c->sigcontext_format = S390X_SCF_NONE;
+  c->sigcontext_addr = 0;
+
+  c->dwarf.args_size = 0;
+  c->dwarf.stash_frames = 0;
+  c->dwarf.use_prev_instr = use_prev_instr;
+  c->dwarf.pi_valid = 0;
+  c->dwarf.pi_is_dynamic = 0;
+  c->dwarf.hint = 0;
+  c->dwarf.prev_rs = 0;
+  c->dwarf.eh_valid_mask = 0;
+
+  return 0;
+}