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 --          Copyright (C) 1992-2006, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 --  This package provides machine code support, both for intrinsic machine
  35 --  operations, and also for machine code statements. See GNAT documentation
  36 --  for full details.
  37
  38 package System.Machine_Code is
  39    pragma Pure;
  40
  41    type Asm_Input_Operand  is private;
  42    type Asm_Output_Operand is private;
  43    --  These types are never used directly, they are declared only so that
  44    --  the calls to Asm are type correct according to Ada semantic rules.
  45
  46    No_Input_Operands  : constant Asm_Input_Operand;
  47    No_Output_Operands : constant Asm_Output_Operand;
  48
  49    type Asm_Input_Operand_List  is
  50      array (Integer range <>) of Asm_Input_Operand;
  51
  52    type Asm_Output_Operand_List is
  53      array (Integer range <>) of Asm_Output_Operand;
  54
  55    type Asm_Insn is private;
  56    --  This type is not used directly. It is declared only so that the
  57    --  aggregates used in code statements are type correct by Ada rules.
  58
  59    procedure Asm (
  60      Template : String;
  61      Outputs  : Asm_Output_Operand_List;
  62      Inputs   : Asm_Input_Operand_List;
  63      Clobber  : String  := "";
  64      Volatile : Boolean := False);
  65
  66    procedure Asm (
  67      Template : String;
  68      Outputs  : Asm_Output_Operand := No_Output_Operands;
  69      Inputs   : Asm_Input_Operand_List;
  70      Clobber  : String  := "";
  71      Volatile : Boolean := False);
  72
  73    procedure Asm (
  74      Template : String;
  75      Outputs  : Asm_Output_Operand_List;
  76      Inputs   : Asm_Input_Operand := No_Input_Operands;
  77      Clobber  : String  := "";
  78      Volatile : Boolean := False);
  79
  80    procedure Asm (
  81      Template : String;
  82      Outputs  : Asm_Output_Operand := No_Output_Operands;
  83      Inputs   : Asm_Input_Operand  := No_Input_Operands;
  84      Clobber  : String  := "";
  85      Volatile : Boolean := False);
  86
  87    function Asm (
  88      Template : String;
  89      Outputs  : Asm_Output_Operand_List;
  90      Inputs   : Asm_Input_Operand_List;
  91      Clobber  : String  := "";
  92      Volatile : Boolean := False) return Asm_Insn;
  93
  94    function Asm (
  95      Template : String;
  96      Outputs  : Asm_Output_Operand := No_Output_Operands;
  97      Inputs   : Asm_Input_Operand_List;
  98      Clobber  : String  := "";
  99      Volatile : Boolean := False) return Asm_Insn;
 100
 101    function Asm (
 102      Template : String;
 103      Outputs  : Asm_Output_Operand_List;
 104      Inputs   : Asm_Input_Operand := No_Input_Operands;
 105      Clobber  : String  := "";
 106      Volatile : Boolean := False) return Asm_Insn;
 107
 108    function Asm (
 109      Template : String;
 110      Outputs  : Asm_Output_Operand := No_Output_Operands;
 111      Inputs   : Asm_Input_Operand  := No_Input_Operands;
 112      Clobber  : String  := "";
 113      Volatile : Boolean := False) return Asm_Insn;
 114
 115    pragma Import (Intrinsic, Asm);
 116
 117 private
 118
 119    type Asm_Input_Operand  is new Integer;
 120    type Asm_Output_Operand is new Integer;
 121    type Asm_Insn           is new Integer;
 122    --  All three of these types are dummy types, to meet the requirements of
 123    --  type consistency. No values of these types are ever referenced.
 124
 125    No_Input_Operands  : constant Asm_Input_Operand  := 0;
 126    No_Output_Operands : constant Asm_Output_Operand := 0;
 127
 128 end System.Machine_Code;