grt: split grt-errors, disp current process.

1 files changed, 69 insertions, 0 deletions

diff --git a/src/grt/grt-errors_exec.ads b/src/grt/grt-errors_exec.ads
new file mode 100644
index 000000000..a722e605c
--- /dev/null
+++ b/src/grt/grt-errors_exec.ads
@@ -0,0 +1,69 @@
+--  GHDL Run Time (GRT) - Error handling during execution (backtrace).
+--  Copyright (C) 2002 - 2014 Tristan Gingold
+--
+--  GHDL 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 2, or (at your option) any later
+--  version.
+--
+--  GHDL 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 GCC; see the file COPYING.  If not, write to the Free
+--  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+--  02111-1307, USA.
+--
+--  As a special exception, if other files instantiate generics from this
+--  unit, or you link this unit with other files to produce an executable,
+--  this unit does not by itself cause the resulting executable to be
+--  covered by the GNU General Public License. This exception does not
+--  however invalidate any other reasons why the executable file might be
+--  covered by the GNU Public License.
+with Grt.Types; use Grt.Types;
+
+package Grt.Errors_Exec is
+   --  Complete error message with a call stack.  SKIP is the number of
+   --  frame to skip, 0 means the caller of this procedure is displayed.
+   procedure Error_Call_Stack (Str : String; Skip : Natural);
+
+   --  Backtrace used to report call stack in case of error.
+   --  Note: for simplicity we assume that a PC is enough to display the
+   --  corresponding file name, line number and routine name.  Might not be
+   --  true on some platforms.
+   --  There is a C version of this record in grt_itf.h
+   type Integer_Address_Array is array (Natural range <>) of Integer_Address;
+   type Backtrace_Addrs is record
+      Size : Natural;
+      Skip : Natural;
+      Addrs : Integer_Address_Array (0 .. 31);
+   end record;
+   pragma Convention (C, Backtrace_Addrs);
+
+   type Backtrace_Addrs_Acc is access Backtrace_Addrs;
+
+   --  Save the current backtrace to BT, but skip SKIP frame.  0 means that
+   --  the caller of this procedure will be in the backtrace.
+   procedure Save_Backtrace (Bt : out Backtrace_Addrs; Skip : Natural);
+   pragma Import (C, Save_Backtrace, "grt_save_backtrace");
+
+   --  Finish error message with a call stack.
+   procedure Error_E_Call_Stack (Bt : Backtrace_Addrs);
+   pragma No_Return (Error_E_Call_Stack);
+
+   procedure Error_E_Call_Stack (Bt : Backtrace_Addrs_Acc);
+   pragma No_Return (Error_E_Call_Stack);
+
+   --  Display an error message for an overflow.
+   procedure Grt_Overflow_Error (Bt : Backtrace_Addrs_Acc);
+   pragma No_Return (Grt_Overflow_Error);
+
+   --  Display an error message for a NULL access dereference.
+   procedure Grt_Null_Access_Error (Bt : Backtrace_Addrs_Acc);
+   pragma No_Return (Grt_Null_Access_Error);
+private
+   pragma Export (C, Grt_Overflow_Error, "grt_overflow_error");
+   pragma Export (C, Grt_Null_Access_Error, "grt_null_access_error");
+end Grt.Errors_Exec;