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
  20 #ifndef MOXIE_CPU_H
  21 #define MOXIE_CPU_H
  22
  23 #include "qemu-common.h"
  24
  25 #define TARGET_LONG_BITS 32
  26
  27 #define CPUArchState struct CPUMoxieState
  28
  29 #define MOXIE_EX_DIV0        0
  30 #define MOXIE_EX_BAD         1
  31 #define MOXIE_EX_IRQ         2
  32 #define MOXIE_EX_SWI         3
  33 #define MOXIE_EX_MMU_MISS    4
  34 #define MOXIE_EX_BREAK      16
  35
  36 #include "exec/cpu-defs.h"
  37 #include "fpu/softfloat.h"
  38
  39 #define TARGET_PAGE_BITS 12     /* 4k */
  40
  41 #define TARGET_PHYS_ADDR_SPACE_BITS 32
  42 #define TARGET_VIRT_ADDR_SPACE_BITS 32
  43
  44 #define NB_MMU_MODES 1
  45
  46 typedef struct CPUMoxieState {
  47
  48     uint32_t flags;               /* general execution flags */
  49     uint32_t gregs[16];           /* general registers */
  50     uint32_t sregs[256];          /* special registers */
  51     uint32_t pc;                  /* program counter */
  52     /* Instead of saving the cc value, we save the cmp arguments
  53        and compute cc on demand.  */
  54     uint32_t cc_a;                /* reg a for condition code calculation */
  55     uint32_t cc_b;                /* reg b for condition code calculation */
  56
  57     void *irq[8];
  58
  59     /* Fields up to this point are cleared by a CPU reset */
  60     struct {} end_reset_fields;
  61
  62     CPU_COMMON
  63
  64 } CPUMoxieState;
  65
  66 #include "qom/cpu.h"
  67
  68 #define TYPE_MOXIE_CPU "moxie-cpu"
  69
  70 #define MOXIE_CPU_CLASS(klass) \
  71     OBJECT_CLASS_CHECK(MoxieCPUClass, (klass), TYPE_MOXIE_CPU)
  72 #define MOXIE_CPU(obj) \
  73     OBJECT_CHECK(MoxieCPU, (obj), TYPE_MOXIE_CPU)
  74 #define MOXIE_CPU_GET_CLASS(obj) \
  75     OBJECT_GET_CLASS(MoxieCPUClass, (obj), TYPE_MOXIE_CPU)
  76
  77 /**
  78  * MoxieCPUClass:
  79  * @parent_reset: The parent class' reset handler.
  80  *
  81  * A Moxie CPU model.
  82  */
  83 typedef struct MoxieCPUClass {
  84     /*< private >*/
  85     CPUClass parent_class;
  86     /*< public >*/
  87
  88     DeviceRealize parent_realize;
  89     void (*parent_reset)(CPUState *cpu);
  90 } MoxieCPUClass;
  91
  92 /**
  93  * MoxieCPU:
  94  * @env: #CPUMoxieState
  95  *
  96  * A Moxie CPU.
  97  */
  98 typedef struct MoxieCPU {
  99     /*< private >*/
 100     CPUState parent_obj;
 101     /*< public >*/
 102
 103     CPUMoxieState env;
 104 } MoxieCPU;
 105
 106 static inline MoxieCPU *moxie_env_get_cpu(CPUMoxieState *env)
 107 {
 108     return container_of(env, MoxieCPU, env);
 109 }
 110
 111 #define ENV_GET_CPU(e) CPU(moxie_env_get_cpu(e))
 112
 113 #define ENV_OFFSET offsetof(MoxieCPU, env)
 114
 115 MoxieCPU *cpu_moxie_init(const char *cpu_model);
 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 #define cpu_init(cpu_model) CPU(cpu_moxie_init(cpu_model))
 125
 126 #define cpu_signal_handler cpu_moxie_signal_handler
 127
 128 static inline int cpu_mmu_index(CPUMoxieState *env, bool ifetch)
 129 {
 130     return 0;
 131 }
 132
 133 #include "exec/cpu-all.h"
 134
 135 static inline void cpu_get_tb_cpu_state(CPUMoxieState *env, target_ulong *pc,
 136                                         target_ulong *cs_base, uint32_t *flags)
 137 {
 138     *pc = env->pc;
 139     *cs_base = 0;
 140     *flags = 0;
 141 }
 142
 143 int moxie_cpu_handle_mmu_fault(CPUState *cpu, vaddr address,
 144                                int rw, int mmu_idx);
 145
 146 #endif /* MOXIE_CPU_H */