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