gcc/ada/s-maccod.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                   S Y S T E M . M A C H I N E _ C O D E                  --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --                            $Revision: 1.9 $
  10 --                                                                          --
  11 --          Copyright (C) 1992-2000 Free Software Foundation, Inc.          --
  12 --                                                                          --
  13 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
  15 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  16 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  17 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  18 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  19 -- for  more details.  You should have  received  a copy of the GNU General --
  20 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  21 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  22 -- MA 02111-1307, USA.                                                      --
  23 --                                                                          --
  24 -- As a special exception,  if other files  instantiate  generics from this --
  25 -- unit, or you link  this unit with other files  to produce an executable, --
  26 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  27 -- covered  by the  GNU  General  Public  License.  This exception does not --
  28 -- however invalidate  any other reasons why  the executable file  might be --
  29 -- covered by the  GNU Public License.                                      --
  30 --                                                                          --
  31 -- GNAT was originally developed  by the GNAT team at  New York University. --
  32 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
  33 --                                                                          --
  34 ------------------------------------------------------------------------------
  35
  36 --  This package provides machine code support, both for instrinsic machine
  37 --  operations, and also for machine code statements. See GNAT documentation
  38 --  for full details.
  39
  40 package System.Machine_Code is
  41 pragma Pure (Machine_Code);
  42
  43    type Asm_Input_Operand  is private;
  44    type Asm_Output_Operand is private;
  45    --  These types are never used directly, they are declared only so that
  46    --  the calls to Asm are type correct according to Ada semantic rules.
  47
  48    No_Input_Operands  : constant Asm_Input_Operand;
  49    No_Output_Operands : constant Asm_Output_Operand;
  50
  51    type Asm_Input_Operand_List  is
  52      array (Integer range <>) of Asm_Input_Operand;
  53
  54    type Asm_Output_Operand_List is
  55      array (Integer range <>) of Asm_Output_Operand;
  56
  57    type Asm_Insn is private;
  58    --  This type is not used directly. It is declared only so that the
  59    --  aggregates used in code statements are type correct by Ada rules.
  60
  61    procedure Asm (
  62      Template : String;
  63      Outputs  : Asm_Output_Operand_List;
  64      Inputs   : Asm_Input_Operand_List;
  65      Clobber  : String  := "";
  66      Volatile : Boolean := False);
  67
  68    procedure Asm (
  69      Template : String;
  70      Outputs  : Asm_Output_Operand := No_Output_Operands;
  71      Inputs   : Asm_Input_Operand_List;
  72      Clobber  : String  := "";
  73      Volatile : Boolean := False);
  74
  75    procedure Asm (
  76      Template : String;
  77      Outputs  : Asm_Output_Operand_List;
  78      Inputs   : Asm_Input_Operand := No_Input_Operands;
  79      Clobber  : String  := "";
  80      Volatile : Boolean := False);
  81
  82    procedure Asm (
  83      Template : String;
  84      Outputs  : Asm_Output_Operand := No_Output_Operands;
  85      Inputs   : Asm_Input_Operand  := No_Input_Operands;
  86      Clobber  : String  := "";
  87      Volatile : Boolean := False);
  88
  89    function Asm (
  90      Template : String;
  91      Outputs  : Asm_Output_Operand_List;
  92      Inputs   : Asm_Input_Operand_List;
  93      Clobber  : String  := "";
  94      Volatile : Boolean := False)
  95      return     Asm_Insn;
  96
  97    function Asm (
  98      Template : String;
  99      Outputs  : Asm_Output_Operand := No_Output_Operands;
 100      Inputs   : Asm_Input_Operand_List;
 101      Clobber  : String  := "";
 102      Volatile : Boolean := False)
 103      return     Asm_Insn;
 104
 105    function Asm (
 106      Template : String;
 107      Outputs  : Asm_Output_Operand_List;
 108      Inputs   : Asm_Input_Operand := No_Input_Operands;
 109      Clobber  : String  := "";
 110      Volatile : Boolean := False)
 111      return     Asm_Insn;
 112
 113    function Asm (
 114      Template : String;
 115      Outputs  : Asm_Output_Operand := No_Output_Operands;
 116      Inputs   : Asm_Input_Operand  := No_Input_Operands;
 117      Clobber  : String  := "";
 118      Volatile : Boolean := False)
 119      return     Asm_Insn;
 120
 121    pragma Import (Intrinsic, Asm);
 122
 123 private
 124
 125    type Asm_Input_Operand  is new Integer;
 126    type Asm_Output_Operand is new Integer;
 127    type Asm_Insn           is new Integer;
 128    --  All three of these types are dummy types, to meet the requirements of
 129    --  type consistenty. No values of these types are ever referenced.
 130
 131    No_Input_Operands  : constant Asm_Input_Operand  := 0;
 132    No_Output_Operands : constant Asm_Output_Operand := 0;
 133
 134 end System.Machine_Code;