freepascal.compiler/compiler/arm/cpuinfo.pas

{
    $Id$
    Copyright (c) 1998-2002 by the Free Pascal development team

    Basic Processor information for the ARM

    See the file COPYING.FPC, included in this distribution,
    for details about the copyright.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 **********************************************************************}

Unit CPUInfo;

Interface

  uses
    globtype;

Type
   { Architecture word - Native unsigned type }
   AWord  = Longword;
   PAWord = ^AWord;

   { this must be an ordinal type with the same size as a pointer }
   { to allow some dirty type casts for example when using        }
   { tconstsym.value                                              }
   { Note: must be unsigned!! Otherwise, ugly code like           }
   { pointer(-1) will result in a pointer with the value          }
   { $fffffffffffffff on a 32bit machine if the compiler uses     }
   { int64 constants internally (JM)                              }
   TConstPtrUInt = Longword;

   bestreal = double;
   ts32real = single;
   ts64real = double;
   ts80real = extended;
   ts64comp = comp;

   pbestreal=^bestreal;

   { possible supported processors for this target }
   tprocessors =
      (no_processor,
       armv3,
       armv4,
       armv5
      );

   tfputype =
     (no_fpuprocessor,
      fpu_soft,
      fpu_libgcc,
      fpu_fpa,
      fpu_fpa10,
      fpu_fpa11,
      fpu_vfp
     );

Const
   {# Size of native extended floating point type }
   extended_size = 8;
   {# Size of a pointer                           }
   pointer_size  = 4;
   {# Size of a multimedia register               }
   mmreg_size = 16;
   { target cpu string (used by compiler options) }
   target_cpu_string = 'arm';
   { size of the buffer used for setjump/longjmp
     the size of this buffer is deduced from the
     jmp_buf structure in setjumph.inc file
   }
   { for linux: }
   jmp_buf_size = 220; { according to sizeof(jmp_buf) on my Zaurus (FK) }

   { calling conventions supported by the code generator }
   supported_calling_conventions = [
     pocall_internproc,
     pocall_compilerproc,
     pocall_inline,
     pocall_stdcall,
     { same as stdcall only different name mangling }
     pocall_cdecl,
     { same as stdcall only different name mangling }
     pocall_cppdecl,
     { same as stdcall but floating point numbers are handled like equal sized integers }
     pocall_softfloat
   ];

   processorsstr : array[tprocessors] of string[5] = ('',
     'ARMV3',
     'ARMV4',
     'ARMV5'
   );

   fputypestr : array[tfputype] of string[6] = ('',
     'SOFT',
     'LIBGCC',
     'FPA',
     'FPA10',
     'FPA11',
     'VFP'
   );


Implementation

end.
{
  $Log$
  Revision 1.3  2003-11-07 15:58:32  florian
    * Florian's culmutative nr. 1; contains:
      - invalid calling conventions for a certain cpu are rejected
      - arm softfloat calling conventions
      - -Sp for cpu dependend code generation
      - several arm fixes
      - remaining code for value open array paras on heap

  Revision 1.2  2003/08/25 23:20:38  florian
    + started to implement FPU support for the ARM
    * fixed a lot of other things

  Revision 1.1  2003/07/21 16:35:30  florian
    * very basic stuff for the arm
}