target-unicore32/exec.h

   1 /*
   2  *  UniCore32 execution defines
   3  *
   4  * Copyright (C) 2010-2011 GUAN Xue-tao
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10 #ifndef __UC32_EXEC_H__
  11 #define __UC32_EXEC_H__
  12
  13 #include "config.h"
  14 #include "dyngen-exec.h"
  15
  16 register struct CPUState_UniCore32 *env asm(AREG0);
  17
  18 #include "cpu.h"
  19 #include "exec-all.h"
  20
  21 static inline void env_to_regs(void)
  22 {
  23 }
  24
  25 static inline void regs_to_env(void)
  26 {
  27 }
  28
  29 static inline int cpu_has_work(CPUState *env)
  30 {
  31     return env->interrupt_request &
  32         (CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB);
  33 }
  34
  35 static inline int cpu_halted(CPUState *env)
  36 {
  37     if (!env->halted) {
  38         return 0;
  39     }
  40     /* An interrupt wakes the CPU even if the I and R ASR bits are
  41        set.  We use EXITTB to silently wake CPU without causing an
  42        actual interrupt.  */
  43     if (cpu_has_work(env)) {
  44         env->halted = 0;
  45         return 0;
  46     }
  47     return EXCP_HALTED;
  48 }
  49
  50 #endif /* __UC32_EXEC_H__ */