src/lib/gnat/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) 1992-2011, 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 3,  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.                                     --
  17 --                                                                          --
  18 -- As a special exception under Section 7 of GPL version 3, you are granted --
  19 -- additional permissions described in the GCC Runtime Library Exception,   --
  20 -- version 3.1, as published by the Free Software Foundation.               --
  21 --                                                                          --
  22 -- You should have received a copy of the GNU General Public License and    --
  23 -- a copy of the GCC Runtime Library Exception along with this program;     --
  24 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  25 -- <http://www.gnu.org/licenses/>.                                          --
  26 --                                                                          --
  27 -- GNAT was originally developed  by the GNAT team at  New York University. --
  28 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  29 --                                                                          --
  30 ------------------------------------------------------------------------------
  31
  32 --  This package provides machine code support, both for intrinsic machine
  33 --  operations, and also for machine code statements. See GNAT documentation
  34 --  for full details.
  35
  36 package System.Machine_Code is
  37    pragma Pure;
  38
  39    --  All identifiers in this unit are implementation defined
  40
  41    pragma Implementation_Defined;
  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) 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) return Asm_Insn;
 102
 103    function Asm (
 104      Template : String;
 105      Outputs  : Asm_Output_Operand_List;
 106      Inputs   : Asm_Input_Operand := No_Input_Operands;
 107      Clobber  : String  := "";
 108      Volatile : Boolean := False) return Asm_Insn;
 109
 110    function Asm (
 111      Template : String;
 112      Outputs  : Asm_Output_Operand := No_Output_Operands;
 113      Inputs   : Asm_Input_Operand  := No_Input_Operands;
 114      Clobber  : String  := "";
 115      Volatile : Boolean := False) return Asm_Insn;
 116
 117    pragma Import (Intrinsic, Asm);
 118
 119 private
 120
 121    type Asm_Input_Operand  is new Integer;
 122    type Asm_Output_Operand is new Integer;
 123    type Asm_Insn           is new Integer;
 124    --  All three of these types are dummy types, to meet the requirements of
 125    --  type consistency. No values of these types are ever referenced.
 126
 127    No_Input_Operands  : constant Asm_Input_Operand  := 0;
 128    No_Output_Operands : constant Asm_Output_Operand := 0;
 129
 130 end System.Machine_Code;