target-moxie/cpu.h

   1 /*
   2  *  Moxie emulation
   3  *
   4  *  Copyright (c) 2008, 2010, 2013 Anthony Green
   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 General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #ifndef _CPU_MOXIE_H
  20 #define _CPU_MOXIE_H
  21
  22 #include "config.h"
  23 #include "qemu-common.h"
  24
  25 #define TARGET_LONG_BITS 32
  26
  27 #define CPUArchState struct CPUMoxieState
  28
  29 #define ELF_MACHINE     0xFEED /* EM_MOXIE */
  30
  31 #define MOXIE_EX_DIV0        0
  32 #define MOXIE_EX_BAD         1
  33 #define MOXIE_EX_IRQ         2
  34 #define MOXIE_EX_SWI         3
  35 #define MOXIE_EX_MMU_MISS    4
  36 #define MOXIE_EX_BREAK      16
  37
  38 #include "exec/cpu-defs.h"
  39 #include "fpu/softfloat.h"
  40
  41 #define TARGET_PAGE_BITS 12     /* 4k */
  42
  43 #define TARGET_PHYS_ADDR_SPACE_BITS 32
  44 #define TARGET_VIRT_ADDR_SPACE_BITS 32
  45
  46 #define NB_MMU_MODES 1
  47
  48 typedef struct CPUMoxieState {
  49
  50     uint32_t flags;               /* general execution flags */
  51     uint32_t gregs[16];           /* general registers */
  52     uint32_t sregs[256];          /* special registers */
  53     uint32_t pc;                  /* program counter */
  54     /* Instead of saving the cc value, we save the cmp arguments
  55        and compute cc on demand.  */
  56     uint32_t cc_a;                /* reg a for condition code calculation */
  57     uint32_t cc_b;                /* reg b for condition code calculation */
  58
  59     void *irq[8];
  60
  61     CPU_COMMON
  62
  63 } CPUMoxieState;
  64
  65 #include "qom/cpu.h"
  66
  67 #define TYPE_MOXIE_CPU "moxie-cpu"
  68
  69 #define MOXIE_CPU_CLASS(klass) \
  70     OBJECT_CLASS_CHECK(MoxieCPUClass, (klass), TYPE_MOXIE_CPU)
  71 #define MOXIE_CPU(obj) \
  72     OBJECT_CHECK(MoxieCPU, (obj), TYPE_MOXIE_CPU)
  73 #define MOXIE_CPU_GET_CLASS(obj) \
  74     OBJECT_GET_CLASS(MoxieCPUClass, (obj), TYPE_MOXIE_CPU)
  75
  76 /**
  77  * MoxieCPUClass:
  78  * @parent_reset: The parent class' reset handler.
  79  *
  80  * A Moxie CPU model.
  81  */
  82 typedef struct MoxieCPUClass {
  83     /*< private >*/
  84     CPUClass parent_class;
  85     /*< public >*/
  86
  87     DeviceRealize parent_realize;
  88     void (*parent_reset)(CPUState *cpu);
  89 } MoxieCPUClass;
  90
  91 /**
  92  * MoxieCPU:
  93  * @env: #CPUMoxieState
  94  *
  95  * A Moxie CPU.
  96  */
  97 typedef struct MoxieCPU {
  98     /*< private >*/
  99     CPUState parent_obj;
 100     /*< public >*/
 101
 102     CPUMoxieState env;
 103 } MoxieCPU;
 104
 105 static inline MoxieCPU *moxie_env_get_cpu(CPUMoxieState *env)
 106 {
 107     return container_of(env, MoxieCPU, env);
 108 }
 109
 110 #define ENV_GET_CPU(e) CPU(moxie_env_get_cpu(e))
 111
 112 #define ENV_OFFSET offsetof(MoxieCPU, env)
 113
 114 MoxieCPU *cpu_moxie_init(const char *cpu_model);
 115 int cpu_moxie_exec(CPUMoxieState *s);
 116 void moxie_cpu_do_interrupt(CPUState *cs);
 117 void moxie_cpu_dump_state(CPUState *cpu, FILE *f,
 118                           fprintf_function cpu_fprintf, int flags);
 119 hwaddr moxie_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
 120 void moxie_translate_init(void);
 121 int cpu_moxie_signal_handler(int host_signum, void *pinfo,
 122                              void *puc);
 123
 124 static inline CPUMoxieState *cpu_init(const char *cpu_model)
 125 {
 126     MoxieCPU *cpu = cpu_moxie_init(cpu_model);
 127     if (cpu == NULL) {
 128         return NULL;
 129     }
 130     return &cpu->env;
 131 }
 132
 133 #define cpu_exec cpu_moxie_exec
 134 #define cpu_gen_code cpu_moxie_gen_code
 135 #define cpu_signal_handler cpu_moxie_signal_handler
 136
 137 static inline int cpu_mmu_index(CPUMoxieState *env)
 138 {
 139     return 0;
 140 }
 141
 142 #include "exec/cpu-all.h"
 143 #include "exec/exec-all.h"
 144
 145 static inline void cpu_get_tb_cpu_state(CPUMoxieState *env, target_ulong *pc,
 146                                         target_ulong *cs_base, int *flags)
 147 {
 148     *pc = env->pc;
 149     *cs_base = 0;
 150     *flags = 0;
 151 }
 152
 153 int moxie_cpu_handle_mmu_fault(CPUState *cpu, vaddr address,
 154                                int rw, int mmu_idx);
 155
 156 #endif /* _CPU_MOXIE_H */