src/arch/isa_specific.hh

   1 /*
   2  * Copyright (c) 2003-2005 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Gabe Black
  29  */
  30
  31 #ifndef __ARCH_ISA_SPECIFIC_HH__
  32 #define __ARCH_ISA_SPECIFIC_HH__
  33
  34 //This file provides a mechanism for other source code to bring in
  35 //files from the ISA being compiled with
  36
  37 //These are constants so you can selective compile code based on the isa
  38 //To use them, do something like
  39 //
  40 //#if THE_ISA == YOUR_FAVORITE_ISA
  41 //      conditional_code
  42 //#endif
  43 //
  44 //Note that this is how this file sets up the other isa "hooks"
  45
  46 //These macros have numerical values because otherwise the preprocessor
  47 //would treat them as 0 in comparisons.
  48 #define ALPHA_ISA 21064
  49 #define SPARC_ISA 42
  50 #define MIPS_ISA 34000
  51
  52 //These tell the preprocessor where to find the files of a particular
  53 //ISA, and set the "TheISA" macro for use elsewhere.
  54 #if THE_ISA == ALPHA_ISA
  55     #define TheISA AlphaISA
  56 #elif THE_ISA == SPARC_ISA
  57     #define TheISA SparcISA
  58 #elif THE_ISA == MIPS_ISA
  59     #define TheISA MipsISA
  60 #else
  61     #error "THE_ISA not set"
  62 #endif
  63
  64 #endif