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 "qemu-common.h"
  23
  24 #define TARGET_LONG_BITS 32
  25
  26 #define CPUArchState struct CPUMoxieState
  27
  28 #define MOXIE_EX_DIV0        0
  29 #define MOXIE_EX_BAD         1
  30 #define MOXIE_EX_IRQ         2
  31 #define MOXIE_EX_SWI         3
  32 #define MOXIE_EX_MMU_MISS    4
  33 #define MOXIE_EX_BREAK      16
  34
  35 #include "exec/cpu-defs.h"
  36 #include "fpu/softfloat.h"
  37
  38 #define TARGET_PAGE_BITS 12     /* 4k */
  39
  40 #define TARGET_PHYS_ADDR_SPACE_BITS 32
  41 #define TARGET_VIRT_ADDR_SPACE_BITS 32
  42
  43 #define NB_MMU_MODES 1
  44
  45 typedef struct CPUMoxieState {
  46
  47     uint32_t flags;               /* general execution flags */
  48     uint32_t gregs[16];           /* general registers */
  49     uint32_t sregs[256];          /* special registers */
  50     uint32_t pc;                  /* program counter */
  51     /* Instead of saving the cc value, we save the cmp arguments
  52        and compute cc on demand.  */
  53     uint32_t cc_a;                /* reg a for condition code calculation */
  54     uint32_t cc_b;                /* reg b for condition code calculation */
  55
  56     void *irq[8];
  57
  58     CPU_COMMON
  59
  60 } CPUMoxieState;
  61
  62 #include "qom/cpu.h"
  63
  64 #define TYPE_MOXIE_CPU "moxie-cpu"
  65
  66 #define MOXIE_CPU_CLASS(klass) \
  67     OBJECT_CLASS_CHECK(MoxieCPUClass, (klass), TYPE_MOXIE_CPU)
  68 #define MOXIE_CPU(obj) \
  69     OBJECT_CHECK(MoxieCPU, (obj), TYPE_MOXIE_CPU)
  70 #define MOXIE_CPU_GET_CLASS(obj) \
  71     OBJECT_GET_CLASS(MoxieCPUClass, (obj), TYPE_MOXIE_CPU)
  72
  73 /**
  74  * MoxieCPUClass:
  75  * @parent_reset: The parent class' reset handler.
  76  *
  77  * A Moxie CPU model.
  78  */
  79 typedef struct MoxieCPUClass {
  80     /*< private >*/
  81     CPUClass parent_class;
  82     /*< public >*/
  83
  84     DeviceRealize parent_realize;
  85     void (*parent_reset)(CPUState *cpu);
  86 } MoxieCPUClass;
  87
  88 /**
  89  * MoxieCPU:
  90  * @env: #CPUMoxieState
  91  *
  92  * A Moxie CPU.
  93  */
  94 typedef struct MoxieCPU {
  95     /*< private >*/
  96     CPUState parent_obj;
  97     /*< public >*/
  98
  99     CPUMoxieState env;
 100 } MoxieCPU;
 101
 102 static inline MoxieCPU *moxie_env_get_cpu(CPUMoxieState *env)
 103 {
 104     return container_of(env, MoxieCPU, env);
 105 }
 106
 107 #define ENV_GET_CPU(e) CPU(moxie_env_get_cpu(e))
 108
 109 #define ENV_OFFSET offsetof(MoxieCPU, env)
 110
 111 MoxieCPU *cpu_moxie_init(const char *cpu_model);
 112 int cpu_moxie_exec(CPUState *cpu);
 113 void moxie_cpu_do_interrupt(CPUState *cs);
 114 void moxie_cpu_dump_state(CPUState *cpu, FILE *f,
 115                           fprintf_function cpu_fprintf, int flags);
 116 hwaddr moxie_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
 117 void moxie_translate_init(void);
 118 int cpu_moxie_signal_handler(int host_signum, void *pinfo,
 119                              void *puc);
 120
 121 #define cpu_init(cpu_model) CPU(cpu_moxie_init(cpu_model))
 122
 123 #define cpu_exec cpu_moxie_exec
 124 #define cpu_signal_handler cpu_moxie_signal_handler
 125
 126 static inline int cpu_mmu_index(CPUMoxieState *env, bool ifetch)
 127 {
 128     return 0;
 129 }
 130
 131 #include "exec/cpu-all.h"
 132
 133 static inline void cpu_get_tb_cpu_state(CPUMoxieState *env, target_ulong *pc,
 134                                         target_ulong *cs_base, uint32_t *flags)
 135 {
 136     *pc = env->pc;
 137     *cs_base = 0;
 138     *flags = 0;
 139 }
 140
 141 int moxie_cpu_handle_mmu_fault(CPUState *cpu, vaddr address,
 142                                int rw, int mmu_idx);
 143
 144 #endif /* _CPU_MOXIE_H */