dyngen-exec.h

   1 /*
   2  *  dyngen defines for micro operation code
   3  *
   4  *  Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #if !defined(__DYNGEN_EXEC_H__)
  20 #define __DYNGEN_EXEC_H__
  21
  22 #if defined(CONFIG_TCG_INTERPRETER)
  23 /* The TCG interpreter does not need a special register AREG0,
  24  * but it is possible to use one by defining AREG0.
  25  * On i386, register edi seems to work. */
  26 /* Run without special register AREG0 or use a value defined elsewhere. */
  27 #elif defined(__i386__)
  28 #define AREG0 "ebp"
  29 #elif defined(__x86_64__)
  30 #define AREG0 "r14"
  31 #elif defined(_ARCH_PPC)
  32 #define AREG0 "r27"
  33 #elif defined(__arm__)
  34 #define AREG0 "r6"
  35 #elif defined(__hppa__)
  36 #define AREG0 "r17"
  37 #elif defined(__mips__)
  38 #define AREG0 "s0"
  39 #elif defined(__sparc__)
  40 #ifdef CONFIG_SOLARIS
  41 #define AREG0 "g2"
  42 #else
  43 #ifdef __sparc_v9__
  44 #define AREG0 "g5"
  45 #else
  46 #define AREG0 "g6"
  47 #endif
  48 #endif
  49 #elif defined(__s390__)
  50 #define AREG0 "r10"
  51 #elif defined(__alpha__)
  52 /* Note $15 is the frame pointer, so anything in op-i386.c that would
  53    require a frame pointer, like alloca, would probably loose.  */
  54 #define AREG0 "$15"
  55 #elif defined(__mc68000)
  56 #define AREG0 "%a5"
  57 #elif defined(__ia64__)
  58 #define AREG0 "r7"
  59 #else
  60 #error unsupported CPU
  61 #endif
  62
  63 #if defined(AREG0)
  64 register CPUArchState *env asm(AREG0);
  65 #else
  66 /* TODO: Try env = cpu_single_env. */
  67 extern CPUArchState *env;
  68 #endif
  69
  70 #endif /* !defined(__DYNGEN_EXEC_H__) */