target-lm32/exec.h

   1 /*
   2  *  LatticeMico32 execution defines.
   3  *
   4  *  Copyright (c) 2010 Michael Walle <michael@walle.cc>
   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
  20 #include "dyngen-exec.h"
  21
  22 register struct CPULM32State *env asm(AREG0);
  23
  24 #include "cpu.h"
  25
  26 static inline int cpu_halted(CPUState *env)
  27 {
  28     if (!env->halted) {
  29         return 0;
  30     }
  31
  32     /* IRQ execeptions wakes us up.  */
  33     if (cpu_has_work(env)) {
  34         env->halted = 0;
  35         return 0;
  36     }
  37     return EXCP_HALTED;
  38 }