target-alpha/exec.h

   1 /*
   2  *  Alpha emulation cpu run-time definitions for qemu.
   3  *
   4  *  Copyright (c) 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
  20 #if !defined (__ALPHA_EXEC_H__)
  21 #define __ALPHA_EXEC_H__
  22
  23 #include "config.h"
  24
  25 #include "dyngen-exec.h"
  26
  27 #define TARGET_LONG_BITS 64
  28
  29 register struct CPUAlphaState *env asm(AREG0);
  30
  31 #define FP_STATUS (env->fp_status)
  32
  33 #include "cpu.h"
  34 #include "exec-all.h"
  35
  36 #if !defined(CONFIG_USER_ONLY)
  37 #include "softmmu_exec.h"
  38 #endif /* !defined(CONFIG_USER_ONLY) */
  39
  40 static inline bool cpu_has_work(CPUState *env)
  41 {
  42     /* Here we are checking to see if the CPU should wake up from HALT.
  43        We will have gotten into this state only for WTINT from PALmode.  */
  44     /* ??? I'm not sure how the IPL state works with WTINT to keep a CPU
  45        asleep even if (some) interrupts have been asserted.  For now,
  46        assume that if a CPU really wants to stay asleep, it will mask
  47        interrupts at the chipset level, which will prevent these bits
  48        from being set in the first place.  */
  49     return env->interrupt_request & (CPU_INTERRUPT_HARD
  50                                      | CPU_INTERRUPT_TIMER
  51                                      | CPU_INTERRUPT_SMP
  52                                      | CPU_INTERRUPT_MCHK);
  53 }
  54
  55 static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
  56 {
  57     env->pc = tb->pc;
  58 }
  59
  60 #endif /* !defined (__ALPHA_EXEC_H__) */