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 "exec/cpu-defs.h"
  24 #include "qom/object.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 } CPUMoxieState;
  49
  50 #include "hw/core/cpu.h"
  51
  52 #define TYPE_MOXIE_CPU "moxie-cpu"
  53
  54 OBJECT_DECLARE_TYPE(MoxieCPU, MoxieCPUClass,
  55                     moxie_cpu, MOXIE_CPU)
  56
  57 /**
  58  * MoxieCPUClass:
  59  * @parent_reset: The parent class' reset handler.
  60  *
  61  * A Moxie CPU model.
  62  */
  63 struct MoxieCPUClass {
  64     /*< private >*/
  65     CPUClass parent_class;
  66     /*< public >*/
  67
  68     DeviceRealize parent_realize;
  69     DeviceReset parent_reset;
  70 };
  71
  72 /**
  73  * MoxieCPU:
  74  * @env: #CPUMoxieState
  75  *
  76  * A Moxie CPU.
  77  */
  78 struct MoxieCPU {
  79     /*< private >*/
  80     CPUState parent_obj;
  81     /*< public >*/
  82
  83     CPUNegativeOffsetState neg;
  84     CPUMoxieState env;
  85 };
  86
  87
  88 void moxie_cpu_do_interrupt(CPUState *cs);
  89 void moxie_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
  90 hwaddr moxie_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
  91 void moxie_translate_init(void);
  92 int cpu_moxie_signal_handler(int host_signum, void *pinfo,
  93                              void *puc);
  94
  95 #define MOXIE_CPU_TYPE_SUFFIX "-" TYPE_MOXIE_CPU
  96 #define MOXIE_CPU_TYPE_NAME(model) model MOXIE_CPU_TYPE_SUFFIX
  97 #define CPU_RESOLVING_TYPE TYPE_MOXIE_CPU
  98
  99 #define cpu_signal_handler cpu_moxie_signal_handler
 100
 101 static inline int cpu_mmu_index(CPUMoxieState *env, bool ifetch)
 102 {
 103     return 0;
 104 }
 105
 106 typedef CPUMoxieState CPUArchState;
 107 typedef MoxieCPU ArchCPU;
 108
 109 #include "exec/cpu-all.h"
 110
 111 static inline void cpu_get_tb_cpu_state(CPUMoxieState *env, target_ulong *pc,
 112                                         target_ulong *cs_base, uint32_t *flags)
 113 {
 114     *pc = env->pc;
 115     *cs_base = 0;
 116     *flags = 0;
 117 }
 118
 119 bool moxie_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
 120                         MMUAccessType access_type, int mmu_idx,
 121                         bool probe, uintptr_t retaddr);
 122
 123 #endif /* MOXIE_CPU_H */