1 files changed, 57 insertions, 0 deletions
diff --git a/gdb/arch/arm-linux.c b/gdb/arch/arm-linux.c
new file mode 100644
index 0000000..5d871e2
--- /dev/null
+++ b/gdb/arch/arm-linux.c
@@ -0,0 +1,57 @@
+/* Common target dependent code for GNU/Linux on ARM systems.
+
+   Copyright (C) 1999-2015 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program 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 of the License, or
+   (at your option) any later version.
+
+   This program 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 a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "common-defs.h"
+#include "arch/arm.h"
+#include "arm-linux.h"
+
+/* Calculate the offset from stack pointer of the pc register on the stack
+   in the case of a sigreturn or sigreturn_rt syscall.  */
+int
+arm_linux_sigreturn_next_pc_offset (unsigned long sp,
+				    unsigned long sp_data,
+				    unsigned long svc_number,
+				    int is_sigreturn)
+{
+  /* Offset of R0 register.  */
+  int r0_offset = 0;
+  /* Offset of PC register.  */
+  int pc_offset = 0;
+
+  if (is_sigreturn)
+    {
+      if (sp_data == ARM_NEW_SIGFRAME_MAGIC)
+	r0_offset = ARM_UCONTEXT_SIGCONTEXT + ARM_SIGCONTEXT_R0;
+      else
+	r0_offset = ARM_SIGCONTEXT_R0;
+    }
+  else
+    {
+      if (sp_data == sp + ARM_OLD_RT_SIGFRAME_SIGINFO)
+	r0_offset = ARM_OLD_RT_SIGFRAME_UCONTEXT;
+      else
+	r0_offset = ARM_NEW_RT_SIGFRAME_UCONTEXT;
+
+      r0_offset += ARM_UCONTEXT_SIGCONTEXT + ARM_SIGCONTEXT_R0;
+    }
+
+  pc_offset = r0_offset + INT_REGISTER_SIZE * ARM_PC_REGNUM;
+
+  return pc_offset;
+}