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