LXR qemu/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
  46typedef 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 */
  83typedef 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 */
  98typedef struct MoxieCPU {
  99    /*< private >*/
 100    CPUState parent_obj;
 101    /*< public >*/
 102
 103    CPUMoxieState env;
 104} MoxieCPU;
 105
 106static 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
 115MoxieCPU *cpu_moxie_init(const char *cpu_model);
 116void moxie_cpu_do_interrupt(CPUState *cs);
 117void moxie_cpu_dump_state(CPUState *cpu, FILE *f,
 118                          fprintf_function cpu_fprintf, int flags);
 119hwaddr moxie_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
 120void moxie_translate_init(void);
 121int 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
 128static inline int cpu_mmu_index(CPUMoxieState *env, bool ifetch)
 129{
 130    return 0;
 131}
 132
 133#include "exec/cpu-all.h"
 134
 135static 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
 143int moxie_cpu_handle_mmu_fault(CPUState *cpu, vaddr address,
 144                               int rw, int mmu_idx);
 145
 146#endif /* MOXIE_CPU_H */
 147