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, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA  02110-1301 USA
  19  */
  20 #if !defined (__PPC_H__)
  21 #define __PPC_H__
  22
  23 #include "config.h"
  24
  25 #include "dyngen-exec.h"
  26
  27 #include "cpu.h"
  28 #include "exec-all.h"
  29
  30 /* Precise emulation is needed to correctly emulate exception flags */
  31 #define USE_PRECISE_EMULATION 1
  32
  33 register struct CPUPPCState *env asm(AREG0);
  34
  35 #if !defined(CONFIG_USER_ONLY)
  36 #include "softmmu_exec.h"
  37 #endif /* !defined(CONFIG_USER_ONLY) */
  38
  39 static always_inline void env_to_regs (void)
  40 {
  41 }
  42
  43 static always_inline void regs_to_env (void)
  44 {
  45 }
  46
  47 static always_inline int cpu_has_work(CPUState *env)
  48 {
  49     return (msr_ee && (env->interrupt_request & CPU_INTERRUPT_HARD));
  50 }
  51
  52
  53 static always_inline int cpu_halted (CPUState *env)
  54 {
  55     if (!env->halted)
  56         return 0;
  57     if (cpu_has_work(env)) {
  58         env->halted = 0;
  59         return 0;
  60     }
  61     return EXCP_HALTED;
  62 }
  63
  64 #endif /* !defined (__PPC_H__) */