+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- E X P _ C O D E --
--- --
--- S p e c --
--- --
--- $Revision: 1.1.16.2 $
--- --
--- Copyright (C) 1996 Free Software Foundation, Inc. --
--- --
--- GNAT is free software; you can redistribute it and/or modify it under --
--- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 2, or (at your option) any later ver- --
--- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
--- OUT 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 distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
--- Processing for handling code statements
-
-with Types; use Types;
-
-with System; use System;
-package Exp_Code is
-
- procedure Expand_Asm_Call (N : Node_Id);
- -- Expands a call to Asm or Asm_Volatile into an equivalent
- -- N_Code_Statement node.
-
- -- The following routines provide an abstract interface to analyze
- -- code statements, for use by Gigi processing for code statements.
- -- Note that the implementations of these routines must not attempt
- -- to expand tables that are frozen on entry to Gigi.
-
- function Is_Asm_Volatile (N : Node_Id) return Boolean;
- -- Given an N_Code_Statement node N, return True in the Asm_Volatile
- -- case and False in the Asm case.
-
- function Asm_Template (N : Node_Id) return Node_Id;
- -- Given an N_Code_Statement node N, returns string literal node for
- -- template in call
-
- procedure Clobber_Setup (N : Node_Id);
- -- Given an N_Code_Statement node N, setup to process the clobber list
- -- with subsequent calls to Clobber_Get_Next.
-
- function Clobber_Get_Next return System.Address;
- -- Can only be called after a previous call to Clobber_Setup. The
- -- returned value is a pointer to a null terminated (C format) string
- -- for the next register argument. Null_Address is returned when there
- -- are no more arguments.
-
- procedure Setup_Asm_Inputs (N : Node_Id);
- -- Given an N_Code_Statement node N, setup to read list of Asm_Input
- -- arguments. The protocol is to construct a loop as follows:
- --
- -- Setup_Asm_Inputs (N);
- -- while Present (Asm_Input_Value)
- -- body
- -- Next_Asm_Input;
- -- end loop;
- --
- -- where the loop body calls Asm_Input_Constraint or Asm_Input_Value to
- -- obtain the constraint string or input value expression from the current
- -- Asm_Input argument.
-
- function Asm_Input_Constraint return Node_Id;
- -- Called within a loop initialized by Setup_Asm_Inputs and controlled
- -- by Next_Asm_Input as described above. Returns a string literal node
- -- for the constraint component of the current Asm_Input_Parameter, or
- -- Empty if there are no more Asm_Input parameters.
-
- function Asm_Input_Value return Node_Id;
- -- Called within a loop initialized by Setup_Asm_Inputs and controlled
- -- by Next_Asm_Input as described above. Returns the expression node for
- -- the value component of the current Asm_Input parameter, or Empty if
- -- there are no more Asm_Input parameters.
-
- procedure Next_Asm_Input;
- -- Step to next Asm_Input parameter. It is an error to call this procedure
- -- if there are no more available parameters (which is impossible if the
- -- call appears in a loop as in the above example).
-
- procedure Setup_Asm_Outputs (N : Node_Id);
- -- Given an N_Code_Statement node N, setup to read list of Asm_Output
- -- arguments. The protocol is to construct a loop as follows:
- --
- -- Setup_Asm_Outputs (N);
- -- while Present (Asm_Output_Value)
- -- body
- -- Next_Asm_Output;
- -- end loop;
- --
- -- where the loop body calls Asm_Output_Constraint or Asm_Output_Variable
- -- to obtain the constraint string or output variable name from the current
- -- Asm_Output argument.
-
- function Asm_Output_Constraint return Node_Id;
- -- Called within a loop initialized by Setup_Asm_Outputs and controlled
- -- by Next_Asm_Output as described above. Returns a string literal node
- -- for the constraint component of the current Asm_Output_Parameter, or
- -- Empty if there are no more Asm_Output parameters.
-
- function Asm_Output_Variable return Node_Id;
- -- Called within a loop initialized by Setup_Asm_Outputs and controlled
- -- by Next_Asm_Output as described above. Returns the expression node for
- -- the output variable component of the current Asm_Output parameter, or
- -- Empty if there are no more Asm_Output parameters.
-
- procedure Next_Asm_Output;
- -- Step to next Asm_Output parameter. It is an error to call this procedure
- -- if there are no more available parameters (which is impossible if the
- -- call appears in a loop as in the above example).
-
-end Exp_Code;
projects / msp430-gcc.git / blobdiff