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#ifndef _CPU_MOXIE_H
  20#define _CPU_MOXIE_H
  21
  22#include "config.h"
  23#include "qemu-common.h"
  24
  25#define TARGET_LONG_BITS 32
  26
  27#define CPUArchState struct CPUMoxieState
  28
  29#define TARGET_HAS_ICE 1
  30
  31#define ELF_MACHINE     0xFEED /* EM_MOXIE */
  32
  33#define MOXIE_EX_DIV0        0
  34#define MOXIE_EX_BAD         1
  35#define MOXIE_EX_IRQ         2
  36#define MOXIE_EX_SWI         3
  37#define MOXIE_EX_MMU_MISS    4
  38#define MOXIE_EX_BREAK      16
  39
  40#include "exec/cpu-defs.h"
  41#include "fpu/softfloat.h"
  42
  43#define TARGET_PAGE_BITS 12     /* 4k */
  44
  45#define TARGET_PHYS_ADDR_SPACE_BITS 32
  46#define TARGET_VIRT_ADDR_SPACE_BITS 32
  47
  48#define NB_MMU_MODES 1
  49
  50typedef struct CPUMoxieState {
  51
  52    uint32_t flags;               /* general execution flags */
  53    uint32_t gregs[16];           /* general registers */
  54    uint32_t sregs[256];          /* special registers */
  55    uint32_t pc;                  /* program counter */
  56    /* Instead of saving the cc value, we save the cmp arguments
  57       and compute cc on demand.  */
  58    uint32_t cc_a;                /* reg a for condition code calculation */
  59    uint32_t cc_b;                /* reg b for condition code calculation */
  60
  61    void *irq[8];
  62
  63    CPU_COMMON
  64
  65} CPUMoxieState;
  66
  67#include "qom/cpu.h"
  68
  69#define TYPE_MOXIE_CPU "moxie-cpu"
  70
  71#define MOXIE_CPU_CLASS(klass) \
  72    OBJECT_CLASS_CHECK(MoxieCPUClass, (klass), TYPE_MOXIE_CPU)
  73#define MOXIE_CPU(obj) \
  74    OBJECT_CHECK(MoxieCPU, (obj), TYPE_MOXIE_CPU)
  75#define MOXIE_CPU_GET_CLASS(obj) \
  76    OBJECT_GET_CLASS(MoxieCPUClass, (obj), TYPE_MOXIE_CPU)
  77
  78/**
  79 * MoxieCPUClass:
  80 * @parent_reset: The parent class' reset handler.
  81 *
  82 * A Moxie CPU model.
  83 */
  84typedef struct MoxieCPUClass {
  85    /*< private >*/
  86    CPUClass parent_class;
  87    /*< public >*/
  88
  89    DeviceRealize parent_realize;
  90    void (*parent_reset)(CPUState *cpu);
  91} MoxieCPUClass;
  92
  93/**
  94 * MoxieCPU:
  95 * @env: #CPUMoxieState
  96 *
  97 * A Moxie CPU.
  98 */
  99typedef struct MoxieCPU {
 100    /*< private >*/
 101    CPUState parent_obj;
 102    /*< public >*/
 103
 104    CPUMoxieState env;
 105} MoxieCPU;
 106
 107static inline MoxieCPU *moxie_env_get_cpu(CPUMoxieState *env)
 108{
 109    return container_of(env, MoxieCPU, env);
 110}
 111
 112#define ENV_GET_CPU(e) CPU(moxie_env_get_cpu(e))
 113
 114#define ENV_OFFSET offsetof(MoxieCPU, env)
 115
 116MoxieCPU *cpu_moxie_init(const char *cpu_model);
 117int cpu_moxie_exec(CPUMoxieState *s);
 118void moxie_cpu_do_interrupt(CPUState *cs);
 119void moxie_cpu_dump_state(CPUState *cpu, FILE *f,
 120                          fprintf_function cpu_fprintf, int flags);
 121hwaddr moxie_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
 122void moxie_translate_init(void);
 123int cpu_moxie_signal_handler(int host_signum, void *pinfo,
 124                             void *puc);
 125
 126static inline CPUMoxieState *cpu_init(const char *cpu_model)
 127{
 128    MoxieCPU *cpu = cpu_moxie_init(cpu_model);
 129    if (cpu == NULL) {
 130        return NULL;
 131    }
 132    return &cpu->env;
 133}
 134
 135#define cpu_exec cpu_moxie_exec
 136#define cpu_gen_code cpu_moxie_gen_code
 137#define cpu_signal_handler cpu_moxie_signal_handler
 138
 139static inline int cpu_mmu_index(CPUMoxieState *env)
 140{
 141    return 0;
 142}
 143
 144#include "exec/cpu-all.h"
 145#include "exec/exec-all.h"
 146
 147static inline void cpu_get_tb_cpu_state(CPUMoxieState *env, target_ulong *pc,
 148                                        target_ulong *cs_base, int *flags)
 149{
 150    *pc = env->pc;
 151    *cs_base = 0;
 152    *flags = 0;
 153}
 154
 155static inline int cpu_has_work(CPUState *cpu)
 156{
 157    return cpu->interrupt_request & CPU_INTERRUPT_HARD;
 158}
 159
 160int cpu_moxie_handle_mmu_fault(CPUMoxieState *env, target_ulong address,
 161                               int rw, int mmu_idx);
 162
 163#endif /* _CPU_MOXIE_H */
 164