1 files changed, 111 insertions, 0 deletions
diff --git a/src/third_party/unwind/dist/src/ppc64/Gresume.c b/src/third_party/unwind/dist/src/ppc64/Gresume.c
new file mode 100644
index 00000000000..0d832d0d97b
--- /dev/null
+++ b/src/third_party/unwind/dist/src/ppc64/Gresume.c
@@ -0,0 +1,111 @@
+/* libunwind - a platform-independent unwind library
+   Copyright (C) 2006-2007 IBM
+   Contributed by
+     Corey Ashford cjashfor@us.ibm.com
+     Jose Flavio Aguilar Paulino <jflavio@br.ibm.com> <joseflavio@gmail.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 <stdlib.h>
+
+#include "unwind_i.h"
+
+#ifndef UNW_REMOTE_ONLY
+
+#include <sys/syscall.h>
+
+/* sigreturn() is a no-op on x86_64 glibc.  */
+
+static NORETURN inline long
+my_rt_sigreturn (void *new_sp)
+{
+  /* XXX: empty stub.  */
+  abort ();
+}
+
+HIDDEN inline int
+ppc64_local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg)
+{
+  struct cursor *c = (struct cursor *) cursor;
+  ucontext_t *uc = (ucontext_t *)c->dwarf.as_arg;
+
+  if (unlikely (c->sigcontext_format != PPC_SCF_NONE))
+    {
+      my_rt_sigreturn(cursor);
+      abort();
+    }
+  else
+    {
+      Debug (8, "resuming at ip=%llx via setcontext()\n",
+            (unsigned long long) c->dwarf.ip);
+      setcontext (uc);
+    }
+  return -UNW_EINVAL;
+}
+
+#endif /* !UNW_REMOTE_ONLY */
+
+/* This routine is responsible for copying the register values in
+   cursor C and establishing them as the current machine state. */
+
+static inline int
+establish_machine_state (struct cursor *c)
+{
+  unw_addr_space_t as = c->dwarf.as;
+  void *arg = c->dwarf.as_arg;
+  unw_fpreg_t fpval;
+  unw_word_t val;
+  int reg;
+
+  Debug (8, "copying out cursor state\n");
+
+  for (reg = 0; reg <= UNW_REG_LAST; ++reg)
+    {
+      Debug (16, "copying %s %d\n", unw_regname (reg), reg);
+      if (unw_is_fpreg (reg))
+        {
+          if (tdep_access_fpreg (c, reg, &fpval, 0) >= 0)
+            as->acc.access_fpreg (as, reg, &fpval, 1, arg);
+        }
+      else
+        {
+          if (tdep_access_reg (c, reg, &val, 0) >= 0)
+            as->acc.access_reg (as, reg, &val, 1, arg);
+        }
+    }
+  return 0;
+}
+
+int
+unw_resume (unw_cursor_t *cursor)
+{
+  struct cursor *c = (struct cursor *) cursor;
+  int ret;
+
+  Debug (1, "(cursor=%p)\n", c);
+
+  if ((ret = establish_machine_state (c)) < 0)
+    return ret;
+
+  return (*c->dwarf.as->acc.resume) (c->dwarf.as, (unw_cursor_t *) c,
+                                     c->dwarf.as_arg);
+}