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