target-ppc/exec.h

   1 /*
   2  *  PowerPC emulation definitions for qemu.
   3  *
   4  *  Copyright (c) 2003-2007 Jocelyn Mayer
   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 (__PPC_H__)
  20 #define __PPC_H__
  21
  22 #include "config.h"
  23
  24 #include "dyngen-exec.h"
  25
  26 #include "cpu.h"
  27 #include "exec-all.h"
  28
  29 /* Precise emulation is needed to correctly emulate exception flags */
  30 #define USE_PRECISE_EMULATION 1
  31
  32 register struct CPUPPCState *env asm(AREG0);
  33
  34 #if !defined(CONFIG_USER_ONLY)
  35 #include "softmmu_exec.h"
  36 #endif /* !defined(CONFIG_USER_ONLY) */
  37
  38 static inline int cpu_has_work(CPUState *env)
  39 {
  40     return (msr_ee && (env->interrupt_request & CPU_INTERRUPT_HARD));
  41 }
  42
  43
  44 static inline int cpu_halted(CPUState *env)
  45 {
  46     if (!env->halted)
  47         return 0;
  48     if (cpu_has_work(env)) {
  49         env->halted = 0;
  50         return 0;
  51     }
  52     return EXCP_HALTED;
  53 }
  54
  55 static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
  56 {
  57     env->nip = tb->pc;
  58 }
  59
  60 #endif /* !defined (__PPC_H__) */