target-openrisc/cpu.h

   1 /*
   2  * OpenRISC virtual CPU header
   3  *
   4  *  Copyright (c) 2009 Stuart Brady <stuart.brady@gmail.com>
   5  *  Copyright (c) 2009 Laurent Desnogues
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA  02110-1301 USA
  20  */
  21 #ifndef CPU_OPENRISC_H
  22 #define CPU_OPENRISC_H
  23
  24 #include "config.h"
  25
  26 #if defined (TARGET_OPENRISC64)
  27 #define TARGET_LONG_BITS 64
  28 #define ELF_MACHINE     EM_NONE
  29 #else
  30 #define TARGET_LONG_BITS 32
  31 #define ELF_MACHINE     EM_OPENRISC
  32 #endif
  33
  34 #define CPUState struct CPUOpenRISCState
  35
  36 #include "cpu-defs.h"
  37
  38 /* XXX: tempo */
  39 #define NB_MMU_MODES 1
  40
  41 /* regs are the general-purpose registers */
  42
  43 struct openrisc_boot_info;
  44
  45 typedef struct CPUOpenRISCState {
  46     target_ulong gpr[32];
  47
  48     target_ulong pc;
  49     target_ulong npc;
  50
  51     CPU_COMMON
  52
  53     /* Fields after the common ones are preserved on reset. */
  54     struct openrisc_boot_info *boot_info;
  55 } CPUOpenRISCState;
  56
  57 CPUOpenRISCState *cpu_openrisc_init(const char *cpu_model);
  58 void openrisc_translate_init(void);
  59 int cpu_openrisc_exec(CPUOpenRISCState *s);
  60 void do_interrupt(CPUOpenRISCState *);
  61
  62 void openrisc_cpu_list(FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...));
  63
  64 #define TARGET_PAGE_BITS 13
  65
  66 #define cpu_init cpu_openrisc_init
  67 #define cpu_exec cpu_openrisc_exec
  68 #define cpu_gen_code cpu_openrisc_gen_code
  69 #define cpu_signal_handler cpu_openrisc_signal_handler
  70 #define cpu_list openrisc_cpu_list
  71
  72 /* XXX: tempo */
  73 static inline int cpu_mmu_index (CPUState *env)
  74 {
  75     return 0;
  76 }
  77
  78 #include "cpu-all.h"
  79 #include "exec-all.h"
  80
  81 static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
  82 {
  83     env->pc = tb->pc;
  84     env->npc = tb->cflags;
  85 }
  86
  87 static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
  88                                         target_ulong *cs_base, int *flags)
  89 {
  90     *pc = env->pc;
  91     *cs_base = env->npc;
  92     /* XXX: tempo */
  93     *flags = 0;
  94 }
  95
  96 #endif