1 files changed, 82 insertions, 0 deletions
diff --git a/backends/m68k_initreg.c b/backends/m68k_initreg.c
new file mode 100644
index 00000000..61f260f6
--- /dev/null
+++ b/backends/m68k_initreg.c
@@ -0,0 +1,82 @@
+/* Fetch live process registers from TID.
+   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
+
+#if defined __m68k__ && defined __linux__
+# include <sys/types.h>
+# include <sys/user.h>
+# include <sys/ptrace.h>
+#endif
+
+#define BACKEND m68k_
+#include "libebl_CPU.h"
+
+bool
+m68k_set_initial_registers_tid (pid_t tid __attribute__ ((unused)),
+				ebl_tid_registers_t *setfunc __attribute__ ((unused)),
+				void *arg __attribute__ ((unused)))
+{
+#if !defined __m68k__ || !defined __linux__
+  return false;
+#else /* __m68k__ */
+  struct user_regs_struct user_regs;
+  if (ptrace (PTRACE_GETREGS, tid, NULL, &user_regs) != 0)
+    return false;
+
+  Dwarf_Word dwarf_regs[16];
+  dwarf_regs[0] = user_regs.d0;
+  dwarf_regs[1] = user_regs.d1;
+  dwarf_regs[2] = user_regs.d2;
+  dwarf_regs[3] = user_regs.d3;
+  dwarf_regs[4] = user_regs.d4;
+  dwarf_regs[5] = user_regs.d5;
+  dwarf_regs[6] = user_regs.d6;
+  dwarf_regs[7] = user_regs.d7;
+  dwarf_regs[8] = user_regs.a0;
+  dwarf_regs[9] = user_regs.a1;
+  dwarf_regs[10] = user_regs.a2;
+  dwarf_regs[11] = user_regs.a3;
+  dwarf_regs[12] = user_regs.a4;
+  dwarf_regs[13] = user_regs.a5;
+  dwarf_regs[14] = user_regs.a6;
+  dwarf_regs[15] = user_regs.usp;
+
+  /* D0..D7, A0..A7.  */
+  if (! setfunc (0, 16, dwarf_regs, arg))
+    return false;
+
+  /* PC.  */
+  dwarf_regs[0] = user_regs.pc;
+  if (! setfunc (24, 1, dwarf_regs, arg))
+    return false;
+
+  return true;
+#endif /* __m68k__ */
+}