[qemu.git] / target-openrisc / cpu.h

/*
 * OpenRISC virtual CPU header.
 *
 * Copyright (c) 2011-2012 Jia Liu <[email protected]>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef CPU_OPENRISC_H
#define CPU_OPENRISC_H

#define TARGET_LONG_BITS 32
#define ELF_MACHINE    EM_OPENRISC

#define CPUArchState struct CPUOpenRISCState

/* cpu_openrisc_map_address_* in CPUOpenRISCTLBContext need this decl.  */
struct OpenRISCCPU;

#include "config.h"
#include "qemu-common.h"
#include "exec/cpu-defs.h"
#include "fpu/softfloat.h"
#include "qom/cpu.h"

#define TYPE_OPENRISC_CPU "or32-cpu"

#define OPENRISC_CPU_CLASS(klass) \
    OBJECT_CLASS_CHECK(OpenRISCCPUClass, (klass), TYPE_OPENRISC_CPU)
#define OPENRISC_CPU(obj) \
    OBJECT_CHECK(OpenRISCCPU, (obj), TYPE_OPENRISC_CPU)
#define OPENRISC_CPU_GET_CLASS(obj) \
    OBJECT_GET_CLASS(OpenRISCCPUClass, (obj), TYPE_OPENRISC_CPU)

/**
 * OpenRISCCPUClass:
 * @parent_realize: The parent class' realize handler.
 * @parent_reset: The parent class' reset handler.
 *
 * A OpenRISC CPU model.
 */
typedef struct OpenRISCCPUClass {
    /*< private >*/
    CPUClass parent_class;
    /*< public >*/

    DeviceRealize parent_realize;
    void (*parent_reset)(CPUState *cpu);
} OpenRISCCPUClass;

#define NB_MMU_MODES    3

enum {
    MMU_NOMMU_IDX = 0,
    MMU_SUPERVISOR_IDX = 1,
    MMU_USER_IDX = 2,
};

#define TARGET_PAGE_BITS 13

#define TARGET_PHYS_ADDR_SPACE_BITS 32
#define TARGET_VIRT_ADDR_SPACE_BITS 32

#define SET_FP_CAUSE(reg, v)    do {\
                                    (reg) = ((reg) & ~(0x3f << 12)) | \
                                            ((v & 0x3f) << 12);\
                                } while (0)
#define GET_FP_ENABLE(reg)       (((reg) >>  7) & 0x1f)
#define UPDATE_FP_FLAGS(reg, v)   do {\
                                      (reg) |= ((v & 0x1f) << 2);\
                                  } while (0)

/* Version Register */
#define SPR_VR 0xFFFF003F

/* Internal flags, delay slot flag */
#define D_FLAG    1

/* Interrupt */
#define NR_IRQS  32

/* Unit presece register */
enum {
    UPR_UP = (1 << 0),
    UPR_DCP = (1 << 1),
    UPR_ICP = (1 << 2),
    UPR_DMP = (1 << 3),
    UPR_IMP = (1 << 4),
    UPR_MP = (1 << 5),
    UPR_DUP = (1 << 6),
    UPR_PCUR = (1 << 7),
    UPR_PMP = (1 << 8),
    UPR_PICP = (1 << 9),
    UPR_TTP = (1 << 10),
    UPR_CUP = (255 << 24),
};

/* CPU configure register */
enum {
    CPUCFGR_NSGF = (15 << 0),
    CPUCFGR_CGF = (1 << 4),
    CPUCFGR_OB32S = (1 << 5),
    CPUCFGR_OB64S = (1 << 6),
    CPUCFGR_OF32S = (1 << 7),
    CPUCFGR_OF64S = (1 << 8),
    CPUCFGR_OV64S = (1 << 9),
};

/* DMMU configure register */
enum {
    DMMUCFGR_NTW = (3 << 0),
    DMMUCFGR_NTS = (7 << 2),
    DMMUCFGR_NAE = (7 << 5),
    DMMUCFGR_CRI = (1 << 8),
    DMMUCFGR_PRI = (1 << 9),
    DMMUCFGR_TEIRI = (1 << 10),
    DMMUCFGR_HTR = (1 << 11),
};

/* IMMU configure register */
enum {
    IMMUCFGR_NTW = (3 << 0),
    IMMUCFGR_NTS = (7 << 2),
    IMMUCFGR_NAE = (7 << 5),
    IMMUCFGR_CRI = (1 << 8),
    IMMUCFGR_PRI = (1 << 9),
    IMMUCFGR_TEIRI = (1 << 10),
    IMMUCFGR_HTR = (1 << 11),
};

/* Float point control status register */
enum {
    FPCSR_FPEE = 1,
    FPCSR_RM = (3 << 1),
    FPCSR_OVF = (1 << 3),
    FPCSR_UNF = (1 << 4),
    FPCSR_SNF = (1 << 5),
    FPCSR_QNF = (1 << 6),
    FPCSR_ZF = (1 << 7),
    FPCSR_IXF = (1 << 8),
    FPCSR_IVF = (1 << 9),
    FPCSR_INF = (1 << 10),
    FPCSR_DZF = (1 << 11),
};

/* Exceptions indices */
enum {
    EXCP_RESET    = 0x1,
    EXCP_BUSERR   = 0x2,
    EXCP_DPF      = 0x3,
    EXCP_IPF      = 0x4,
    EXCP_TICK     = 0x5,
    EXCP_ALIGN    = 0x6,
    EXCP_ILLEGAL  = 0x7,
    EXCP_INT      = 0x8,
    EXCP_DTLBMISS = 0x9,
    EXCP_ITLBMISS = 0xa,
    EXCP_RANGE    = 0xb,
    EXCP_SYSCALL  = 0xc,
    EXCP_FPE      = 0xd,
    EXCP_TRAP     = 0xe,
    EXCP_NR,
};

/* Supervisor register */
enum {
    SR_SM = (1 << 0),
    SR_TEE = (1 << 1),
    SR_IEE = (1 << 2),
    SR_DCE = (1 << 3),
    SR_ICE = (1 << 4),
    SR_DME = (1 << 5),
    SR_IME = (1 << 6),
    SR_LEE = (1 << 7),
    SR_CE  = (1 << 8),
    SR_F   = (1 << 9),
    SR_CY  = (1 << 10),
    SR_OV  = (1 << 11),
    SR_OVE = (1 << 12),
    SR_DSX = (1 << 13),
    SR_EPH = (1 << 14),
    SR_FO  = (1 << 15),
    SR_SUMRA = (1 << 16),
    SR_SCE = (1 << 17),
};

/* OpenRISC Hardware Capabilities */
enum {
    OPENRISC_FEATURE_NSGF = (15 << 0),
    OPENRISC_FEATURE_CGF = (1 << 4),
    OPENRISC_FEATURE_OB32S = (1 << 5),
    OPENRISC_FEATURE_OB64S = (1 << 6),
    OPENRISC_FEATURE_OF32S = (1 << 7),
    OPENRISC_FEATURE_OF64S = (1 << 8),
    OPENRISC_FEATURE_OV64S = (1 << 9),
};

/* Tick Timer Mode Register */
enum {
    TTMR_TP = (0xfffffff),
    TTMR_IP = (1 << 28),
    TTMR_IE = (1 << 29),
    TTMR_M  = (3 << 30),
};

/* Timer Mode */
enum {
    TIMER_NONE = (0 << 30),
    TIMER_INTR = (1 << 30),
    TIMER_SHOT = (2 << 30),
    TIMER_CONT = (3 << 30),
};

/* TLB size */
enum {
    DTLB_WAYS = 1,
    DTLB_SIZE = 64,
    DTLB_MASK = (DTLB_SIZE-1),
    ITLB_WAYS = 1,
    ITLB_SIZE = 64,
    ITLB_MASK = (ITLB_SIZE-1),
};

/* TLB prot */
enum {
    URE = (1 << 6),
    UWE = (1 << 7),
    SRE = (1 << 8),
    SWE = (1 << 9),

    SXE = (1 << 6),
    UXE = (1 << 7),
};

/* check if tlb available */
enum {
    TLBRET_INVALID = -3,
    TLBRET_NOMATCH = -2,
    TLBRET_BADADDR = -1,
    TLBRET_MATCH = 0
};

typedef struct OpenRISCTLBEntry {
    uint32_t mr;
    uint32_t tr;
} OpenRISCTLBEntry;

#ifndef CONFIG_USER_ONLY
typedef struct CPUOpenRISCTLBContext {
    OpenRISCTLBEntry itlb[ITLB_WAYS][ITLB_SIZE];
    OpenRISCTLBEntry dtlb[DTLB_WAYS][DTLB_SIZE];

    int (*cpu_openrisc_map_address_code)(struct OpenRISCCPU *cpu,
                                         hwaddr *physical,
                                         int *prot,
                                         target_ulong address, int rw);
    int (*cpu_openrisc_map_address_data)(struct OpenRISCCPU *cpu,
                                         hwaddr *physical,
                                         int *prot,
                                         target_ulong address, int rw);
} CPUOpenRISCTLBContext;
#endif

typedef struct CPUOpenRISCState {
    target_ulong gpr[32];     /* General registers */
    target_ulong pc;          /* Program counter */
    target_ulong npc;         /* Next PC */
    target_ulong ppc;         /* Prev PC */
    target_ulong jmp_pc;      /* Jump PC */

    target_ulong machi;       /* Multiply register MACHI */
    target_ulong maclo;       /* Multiply register MACLO */

    target_ulong fpmaddhi;    /* Multiply and add float register FPMADDHI */
    target_ulong fpmaddlo;    /* Multiply and add float register FPMADDLO */

    target_ulong epcr;        /* Exception PC register */
    target_ulong eear;        /* Exception EA register */

    uint32_t sr;              /* Supervisor register */
    uint32_t vr;              /* Version register */
    uint32_t upr;             /* Unit presence register */
    uint32_t cpucfgr;         /* CPU configure register */
    uint32_t dmmucfgr;        /* DMMU configure register */
    uint32_t immucfgr;        /* IMMU configure register */
    uint32_t esr;             /* Exception supervisor register */
    uint32_t fpcsr;           /* Float register */
    float_status fp_status;

    uint32_t flags;           /* cpu_flags, we only use it for exception
                                 in solt so far.  */
    uint32_t btaken;          /* the SR_F bit */

    CPU_COMMON

#ifndef CONFIG_USER_ONLY
    CPUOpenRISCTLBContext * tlb;

    struct QEMUTimer *timer;
    uint32_t ttmr;          /* Timer tick mode register */
    uint32_t ttcr;          /* Timer tick count register */

    uint32_t picmr;         /* Interrupt mask register */
    uint32_t picsr;         /* Interrupt contrl register*/
#endif
    void *irq[32];          /* Interrupt irq input */
} CPUOpenRISCState;

/**
 * OpenRISCCPU:
 * @env: #CPUOpenRISCState
 *
 * A OpenRISC CPU.
 */
typedef struct OpenRISCCPU {
    /*< private >*/
    CPUState parent_obj;
    /*< public >*/

    CPUOpenRISCState env;

    uint32_t feature;       /* CPU Capabilities */
} OpenRISCCPU;

static inline OpenRISCCPU *openrisc_env_get_cpu(CPUOpenRISCState *env)
{
    return OPENRISC_CPU(container_of(env, OpenRISCCPU, env));
}

#define ENV_GET_CPU(e) CPU(openrisc_env_get_cpu(e))

#define ENV_OFFSET offsetof(OpenRISCCPU, env)

OpenRISCCPU *cpu_openrisc_init(const char *cpu_model);

void cpu_openrisc_list(FILE *f, fprintf_function cpu_fprintf);
int cpu_openrisc_exec(CPUOpenRISCState *s);
void openrisc_cpu_do_interrupt(CPUState *cpu);
void openrisc_cpu_dump_state(CPUState *cpu, FILE *f,
                             fprintf_function cpu_fprintf, int flags);
void openrisc_translate_init(void);
int cpu_openrisc_handle_mmu_fault(CPUOpenRISCState *env,
                                  target_ulong address,
                                  int rw, int mmu_idx);
int cpu_openrisc_signal_handler(int host_signum, void *pinfo, void *puc);

#define cpu_list cpu_openrisc_list
#define cpu_exec cpu_openrisc_exec
#define cpu_gen_code cpu_openrisc_gen_code
#define cpu_handle_mmu_fault cpu_openrisc_handle_mmu_fault
#define cpu_signal_handler cpu_openrisc_signal_handler

#ifndef CONFIG_USER_ONLY
extern const struct VMStateDescription vmstate_openrisc_cpu;

/* hw/openrisc_pic.c */
void cpu_openrisc_pic_init(OpenRISCCPU *cpu);

/* hw/openrisc_timer.c */
void cpu_openrisc_clock_init(OpenRISCCPU *cpu);
void cpu_openrisc_count_update(OpenRISCCPU *cpu);
void cpu_openrisc_count_start(OpenRISCCPU *cpu);
void cpu_openrisc_count_stop(OpenRISCCPU *cpu);

void cpu_openrisc_mmu_init(OpenRISCCPU *cpu);
int cpu_openrisc_get_phys_nommu(OpenRISCCPU *cpu,
                                hwaddr *physical,
                                int *prot, target_ulong address, int rw);
int cpu_openrisc_get_phys_code(OpenRISCCPU *cpu,
                               hwaddr *physical,
                               int *prot, target_ulong address, int rw);
int cpu_openrisc_get_phys_data(OpenRISCCPU *cpu,
                               hwaddr *physical,
                               int *prot, target_ulong address, int rw);
#endif

static inline CPUOpenRISCState *cpu_init(const char *cpu_model)
{
    OpenRISCCPU *cpu = cpu_openrisc_init(cpu_model);
    if (cpu) {
        return &cpu->env;
    }
    return NULL;
}

#if defined(CONFIG_USER_ONLY)
static inline void cpu_clone_regs(CPUOpenRISCState *env, target_ulong newsp)
{
    if (newsp) {
        env->gpr[1] = newsp;
    }
    env->gpr[2] = 0;
}
#endif

#include "exec/cpu-all.h"

static inline void cpu_get_tb_cpu_state(CPUOpenRISCState *env,
                                        target_ulong *pc,
                                        target_ulong *cs_base, int *flags)
{
    *pc = env->pc;
    *cs_base = 0;
    /* D_FLAG -- branch instruction exception */
    *flags = (env->flags & D_FLAG);
}

static inline int cpu_mmu_index(CPUOpenRISCState *env)
{
    if (!(env->sr & SR_IME)) {
        return MMU_NOMMU_IDX;
    }
    return (env->sr & SR_SM) == 0 ? MMU_USER_IDX : MMU_SUPERVISOR_IDX;
}

#define CPU_INTERRUPT_TIMER   CPU_INTERRUPT_TGT_INT_0
static inline bool cpu_has_work(CPUState *cpu)
{
    return cpu->interrupt_request & (CPU_INTERRUPT_HARD |
                                     CPU_INTERRUPT_TIMER);
}

#include "exec/exec-all.h"

static inline target_ulong cpu_get_pc(CPUOpenRISCState *env)
{
    return env->pc;
}

static inline void cpu_pc_from_tb(CPUOpenRISCState *env, TranslationBlock *tb)
{
    env->pc = tb->pc;
}

#endif /* CPU_OPENRISC_H */
Commit	Line	Data
e67db06e JL	1	/*
	2	* OpenRISC virtual CPU header.
	3	*
	4	* Copyright (c) 2011-2012 Jia Liu <[email protected]>
	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 Lesser General Public
	17	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#ifndef CPU_OPENRISC_H
	21	#define CPU_OPENRISC_H
	22
	23	#define TARGET_LONG_BITS 32
	24	#define ELF_MACHINE EM_OPENRISC
	25
	26	#define CPUArchState struct CPUOpenRISCState
	27
726fe045 JL	28	/* cpu_openrisc_map_address_* in CPUOpenRISCTLBContext need this decl. */
	29	struct OpenRISCCPU;
	30
e67db06e JL	31	#include "config.h"
e67db06e JL	32	#include "qemu-common.h"
022c62cb	33	#include "exec/cpu-defs.h"
6b4c305c	34	#include "fpu/softfloat.h"
14cccb61	35	#include "qom/cpu.h"
e67db06e JL	36
	37	#define TYPE_OPENRISC_CPU "or32-cpu"
	38
	39	#define OPENRISC_CPU_CLASS(klass) \
	40	OBJECT_CLASS_CHECK(OpenRISCCPUClass, (klass), TYPE_OPENRISC_CPU)
	41	#define OPENRISC_CPU(obj) \
	42	OBJECT_CHECK(OpenRISCCPU, (obj), TYPE_OPENRISC_CPU)
	43	#define OPENRISC_CPU_GET_CLASS(obj) \
	44	OBJECT_GET_CLASS(OpenRISCCPUClass, (obj), TYPE_OPENRISC_CPU)
	45
	46	/**
	47	* OpenRISCCPUClass:
c296262b	48	* @parent_realize: The parent class' realize handler.
e67db06e JL	49	* @parent_reset: The parent class' reset handler.
	50	*
	51	* A OpenRISC CPU model.
	52	*/
	53	typedef struct OpenRISCCPUClass {
	54	/< private >/
	55	CPUClass parent_class;
	56	/< public >/
	57
c296262b	58	DeviceRealize parent_realize;
e67db06e JL	59	void (parent_reset)(CPUState cpu);
	60	} OpenRISCCPUClass;
	61
	62	#define NB_MMU_MODES 3
	63
726fe045 JL	64	enum {
	65	MMU_NOMMU_IDX = 0,
	66	MMU_SUPERVISOR_IDX = 1,
	67	MMU_USER_IDX = 2,
	68	};
	69
e67db06e JL	70	#define TARGET_PAGE_BITS 13
	71
	72	#define TARGET_PHYS_ADDR_SPACE_BITS 32
	73	#define TARGET_VIRT_ADDR_SPACE_BITS 32
	74
	75	#define SET_FP_CAUSE(reg, v) do {\
	76	(reg) = ((reg) & ~(0x3f << 12)) \| \
	77	((v & 0x3f) << 12);\
	78	} while (0)
	79	#define GET_FP_ENABLE(reg) (((reg) >> 7) & 0x1f)
	80	#define UPDATE_FP_FLAGS(reg, v) do {\
	81	(reg) \|= ((v & 0x1f) << 2);\
	82	} while (0)
	83
4dd044c6 JL	84	/* Version Register */
	85	#define SPR_VR 0xFFFF003F
	86
e67db06e JL	87	/* Internal flags, delay slot flag */
	88	#define D_FLAG 1
	89
b6a71ef7 JL	90	/* Interrupt */
	91	#define NR_IRQS 32
	92
e67db06e JL	93	/* Unit presece register */
	94	enum {
	95	UPR_UP = (1 << 0),
	96	UPR_DCP = (1 << 1),
	97	UPR_ICP = (1 << 2),
	98	UPR_DMP = (1 << 3),
	99	UPR_IMP = (1 << 4),
	100	UPR_MP = (1 << 5),
	101	UPR_DUP = (1 << 6),
	102	UPR_PCUR = (1 << 7),
	103	UPR_PMP = (1 << 8),
	104	UPR_PICP = (1 << 9),
	105	UPR_TTP = (1 << 10),
	106	UPR_CUP = (255 << 24),
	107	};
	108
	109	/* CPU configure register */
	110	enum {
	111	CPUCFGR_NSGF = (15 << 0),
	112	CPUCFGR_CGF = (1 << 4),
	113	CPUCFGR_OB32S = (1 << 5),
	114	CPUCFGR_OB64S = (1 << 6),
	115	CPUCFGR_OF32S = (1 << 7),
	116	CPUCFGR_OF64S = (1 << 8),
	117	CPUCFGR_OV64S = (1 << 9),
	118	};
	119
	120	/* DMMU configure register */
	121	enum {
	122	DMMUCFGR_NTW = (3 << 0),
	123	DMMUCFGR_NTS = (7 << 2),
	124	DMMUCFGR_NAE = (7 << 5),
	125	DMMUCFGR_CRI = (1 << 8),
	126	DMMUCFGR_PRI = (1 << 9),
	127	DMMUCFGR_TEIRI = (1 << 10),
	128	DMMUCFGR_HTR = (1 << 11),
	129	};
	130
	131	/* IMMU configure register */
	132	enum {
	133	IMMUCFGR_NTW = (3 << 0),
	134	IMMUCFGR_NTS = (7 << 2),
	135	IMMUCFGR_NAE = (7 << 5),
	136	IMMUCFGR_CRI = (1 << 8),
	137	IMMUCFGR_PRI = (1 << 9),
	138	IMMUCFGR_TEIRI = (1 << 10),
	139	IMMUCFGR_HTR = (1 << 11),
	140	};
	141
	142	/* Float point control status register */
	143	enum {
	144	FPCSR_FPEE = 1,
	145	FPCSR_RM = (3 << 1),
	146	FPCSR_OVF = (1 << 3),
	147	FPCSR_UNF = (1 << 4),
	148	FPCSR_SNF = (1 << 5),
	149	FPCSR_QNF = (1 << 6),
	150	FPCSR_ZF = (1 << 7),
	151	FPCSR_IXF = (1 << 8),
	152	FPCSR_IVF = (1 << 9),
	153	FPCSR_INF = (1 << 10),
	154	FPCSR_DZF = (1 << 11),
	155	};
	156
157	/* Exceptions indices */
158	enum {
159	EXCP_RESET = 0x1,
160	EXCP_BUSERR = 0x2,
161	EXCP_DPF = 0x3,
162	EXCP_IPF = 0x4,
163	EXCP_TICK = 0x5,
164	EXCP_ALIGN = 0x6,
165	EXCP_ILLEGAL = 0x7,
166	EXCP_INT = 0x8,
167	EXCP_DTLBMISS = 0x9,
168	EXCP_ITLBMISS = 0xa,
169	EXCP_RANGE = 0xb,
170	EXCP_SYSCALL = 0xc,
171	EXCP_FPE = 0xd,
172	EXCP_TRAP = 0xe,
173	EXCP_NR,
174	};
175
176	/* Supervisor register */
177	enum {
178	SR_SM = (1 << 0),
179	SR_TEE = (1 << 1),
180	SR_IEE = (1 << 2),
181	SR_DCE = (1 << 3),
182	SR_ICE = (1 << 4),
183	SR_DME = (1 << 5),
184	SR_IME = (1 << 6),
185	SR_LEE = (1 << 7),
186	SR_CE = (1 << 8),
187	SR_F = (1 << 9),
188	SR_CY = (1 << 10),
189	SR_OV = (1 << 11),
190	SR_OVE = (1 << 12),
191	SR_DSX = (1 << 13),
192	SR_EPH = (1 << 14),
193	SR_FO = (1 << 15),
194	SR_SUMRA = (1 << 16),
195	SR_SCE = (1 << 17),
196	};
197
198	/* OpenRISC Hardware Capabilities */
199	enum {
200	OPENRISC_FEATURE_NSGF = (15 << 0),
201	OPENRISC_FEATURE_CGF = (1 << 4),
202	OPENRISC_FEATURE_OB32S = (1 << 5),
203	OPENRISC_FEATURE_OB64S = (1 << 6),
204	OPENRISC_FEATURE_OF32S = (1 << 7),
205	OPENRISC_FEATURE_OF64S = (1 << 8),
206	OPENRISC_FEATURE_OV64S = (1 << 9),
207	};
208
99f575ed JL	209	/* Tick Timer Mode Register */
	210	enum {
	211	TTMR_TP = (0xfffffff),
	212	TTMR_IP = (1 << 28),
	213	TTMR_IE = (1 << 29),
	214	TTMR_M = (3 << 30),
	215	};
	216
	217	/* Timer Mode */
	218	enum {
	219	TIMER_NONE = (0 << 30),
	220	TIMER_INTR = (1 << 30),
	221	TIMER_SHOT = (2 << 30),
	222	TIMER_CONT = (3 << 30),
	223	};
	224
726fe045 JL	225	/* TLB size */
	226	enum {
	227	DTLB_WAYS = 1,
	228	DTLB_SIZE = 64,
	229	DTLB_MASK = (DTLB_SIZE-1),
	230	ITLB_WAYS = 1,
	231	ITLB_SIZE = 64,
	232	ITLB_MASK = (ITLB_SIZE-1),
	233	};
	234
	235	/* TLB prot */
	236	enum {
	237	URE = (1 << 6),
	238	UWE = (1 << 7),
	239	SRE = (1 << 8),
	240	SWE = (1 << 9),
	241
	242	SXE = (1 << 6),
	243	UXE = (1 << 7),
	244	};
	245
	246	/* check if tlb available */
	247	enum {
	248	TLBRET_INVALID = -3,
	249	TLBRET_NOMATCH = -2,
	250	TLBRET_BADADDR = -1,
	251	TLBRET_MATCH = 0
	252	};
	253
	254	typedef struct OpenRISCTLBEntry {
	255	uint32_t mr;
	256	uint32_t tr;
	257	} OpenRISCTLBEntry;
	258
	259	#ifndef CONFIG_USER_ONLY
	260	typedef struct CPUOpenRISCTLBContext {
	261	OpenRISCTLBEntry itlb[ITLB_WAYS][ITLB_SIZE];
	262	OpenRISCTLBEntry dtlb[DTLB_WAYS][DTLB_SIZE];
	263
	264	int (cpu_openrisc_map_address_code)(struct OpenRISCCPU cpu,
a8170e5e	265	hwaddr *physical,
726fe045 JL	266	int *prot,
	267	target_ulong address, int rw);
	268	int (cpu_openrisc_map_address_data)(struct OpenRISCCPU cpu,
a8170e5e	269	hwaddr *physical,
726fe045 JL	270	int *prot,
	271	target_ulong address, int rw);
	272	} CPUOpenRISCTLBContext;
	273	#endif
	274
e67db06e JL	275	typedef struct CPUOpenRISCState {
	276	target_ulong gpr[32]; /* General registers */
	277	target_ulong pc; /* Program counter */
	278	target_ulong npc; /* Next PC */
	279	target_ulong ppc; /* Prev PC */
	280	target_ulong jmp_pc; /* Jump PC */
	281
	282	target_ulong machi; /* Multiply register MACHI */
	283	target_ulong maclo; /* Multiply register MACLO */
	284
	285	target_ulong fpmaddhi; /* Multiply and add float register FPMADDHI */
	286	target_ulong fpmaddlo; /* Multiply and add float register FPMADDLO */
	287
	288	target_ulong epcr; /* Exception PC register */
	289	target_ulong eear; /* Exception EA register */
	290
	291	uint32_t sr; /* Supervisor register */
	292	uint32_t vr; /* Version register */
	293	uint32_t upr; /* Unit presence register */
	294	uint32_t cpucfgr; /* CPU configure register */
	295	uint32_t dmmucfgr; /* DMMU configure register */
	296	uint32_t immucfgr; /* IMMU configure register */
	297	uint32_t esr; /* Exception supervisor register */
	298	uint32_t fpcsr; /* Float register */
	299	float_status fp_status;
	300
	301	uint32_t flags; /* cpu_flags, we only use it for exception
	302	in solt so far. */
	303	uint32_t btaken; /* the SR_F bit */
	304
	305	CPU_COMMON
	306
	307	#ifndef CONFIG_USER_ONLY
726fe045 JL	308	CPUOpenRISCTLBContext * tlb;
726fe045 JL	309
e67db06e JL	310	struct QEMUTimer *timer;
	311	uint32_t ttmr; /* Timer tick mode register */
	312	uint32_t ttcr; /* Timer tick count register */
	313
	314	uint32_t picmr; /* Interrupt mask register */
	315	uint32_t picsr; /* Interrupt contrl register*/
	316	#endif
b6a71ef7	317	void irq[32]; / Interrupt irq input */
e67db06e JL	318	} CPUOpenRISCState;
	319
	320	/**
	321	* OpenRISCCPU:
	322	* @env: #CPUOpenRISCState
	323	*
	324	* A OpenRISC CPU.
	325	*/
	326	typedef struct OpenRISCCPU {
	327	/< private >/
	328	CPUState parent_obj;
	329	/< public >/
	330
	331	CPUOpenRISCState env;
	332
	333	uint32_t feature; /* CPU Capabilities */
	334	} OpenRISCCPU;
	335
	336	static inline OpenRISCCPU openrisc_env_get_cpu(CPUOpenRISCState env)
	337	{
	338	return OPENRISC_CPU(container_of(env, OpenRISCCPU, env));
	339	}
	340
	341	#define ENV_GET_CPU(e) CPU(openrisc_env_get_cpu(e))
	342
fadf9825 AF	343	#define ENV_OFFSET offsetof(OpenRISCCPU, env)
fadf9825 AF	344
e67db06e	345	OpenRISCCPU cpu_openrisc_init(const char cpu_model);
e67db06e JL	346
	347	void cpu_openrisc_list(FILE *f, fprintf_function cpu_fprintf);
	348	int cpu_openrisc_exec(CPUOpenRISCState *s);
97a8ea5a	349	void openrisc_cpu_do_interrupt(CPUState *cpu);
878096ee AF	350	void openrisc_cpu_dump_state(CPUState cpu, FILE f,
878096ee AF	351	fprintf_function cpu_fprintf, int flags);
e67db06e	352	void openrisc_translate_init(void);
726fe045 JL	353	int cpu_openrisc_handle_mmu_fault(CPUOpenRISCState *env,
	354	target_ulong address,
	355	int rw, int mmu_idx);
d962783e	356	int cpu_openrisc_signal_handler(int host_signum, void pinfo, void puc);
e67db06e JL	357
	358	#define cpu_list cpu_openrisc_list
	359	#define cpu_exec cpu_openrisc_exec
	360	#define cpu_gen_code cpu_openrisc_gen_code
726fe045	361	#define cpu_handle_mmu_fault cpu_openrisc_handle_mmu_fault
d962783e	362	#define cpu_signal_handler cpu_openrisc_signal_handler
e67db06e JL	363
e67db06e JL	364	#ifndef CONFIG_USER_ONLY
da697214 AF	365	extern const struct VMStateDescription vmstate_openrisc_cpu;
da697214 AF	366
dd29c7fb JL	367	/* hw/openrisc_pic.c */
	368	void cpu_openrisc_pic_init(OpenRISCCPU *cpu);
	369
99f575ed JL	370	/* hw/openrisc_timer.c */
	371	void cpu_openrisc_clock_init(OpenRISCCPU *cpu);
	372	void cpu_openrisc_count_update(OpenRISCCPU *cpu);
	373	void cpu_openrisc_count_start(OpenRISCCPU *cpu);
	374	void cpu_openrisc_count_stop(OpenRISCCPU *cpu);
	375
e67db06e	376	void cpu_openrisc_mmu_init(OpenRISCCPU *cpu);
726fe045	377	int cpu_openrisc_get_phys_nommu(OpenRISCCPU *cpu,
a8170e5e	378	hwaddr *physical,
726fe045 JL	379	int *prot, target_ulong address, int rw);
726fe045 JL	380	int cpu_openrisc_get_phys_code(OpenRISCCPU *cpu,
a8170e5e	381	hwaddr *physical,
726fe045 JL	382	int *prot, target_ulong address, int rw);
726fe045 JL	383	int cpu_openrisc_get_phys_data(OpenRISCCPU *cpu,
a8170e5e	384	hwaddr *physical,
726fe045	385	int *prot, target_ulong address, int rw);
e67db06e JL	386	#endif
	387
	388	static inline CPUOpenRISCState cpu_init(const char cpu_model)
	389	{
	390	OpenRISCCPU *cpu = cpu_openrisc_init(cpu_model);
	391	if (cpu) {
	392	return &cpu->env;
	393	}
	394	return NULL;
	395	}
	396
d962783e JL	397	#if defined(CONFIG_USER_ONLY)
	398	static inline void cpu_clone_regs(CPUOpenRISCState *env, target_ulong newsp)
	399	{
	400	if (newsp) {
	401	env->gpr[1] = newsp;
	402	}
	403	env->gpr[2] = 0;
	404	}
	405	#endif
	406
022c62cb	407	#include "exec/cpu-all.h"
e67db06e JL	408
	409	static inline void cpu_get_tb_cpu_state(CPUOpenRISCState *env,
	410	target_ulong *pc,
	411	target_ulong cs_base, int flags)
	412	{
	413	*pc = env->pc;
	414	*cs_base = 0;
	415	/* D_FLAG -- branch instruction exception */
	416	*flags = (env->flags & D_FLAG);
	417	}
	418
	419	static inline int cpu_mmu_index(CPUOpenRISCState *env)
	420	{
726fe045 JL	421	if (!(env->sr & SR_IME)) {
	422	return MMU_NOMMU_IDX;
	423	}
	424	return (env->sr & SR_SM) == 0 ? MMU_USER_IDX : MMU_SUPERVISOR_IDX;
e67db06e JL	425	}
e67db06e JL	426
b6a71ef7	427	#define CPU_INTERRUPT_TIMER CPU_INTERRUPT_TGT_INT_0
3993c6bd	428	static inline bool cpu_has_work(CPUState *cpu)
e67db06e	429	{
259186a7	430	return cpu->interrupt_request & (CPU_INTERRUPT_HARD \|
b6a71ef7	431	CPU_INTERRUPT_TIMER);
e67db06e JL	432	}
e67db06e JL	433
022c62cb	434	#include "exec/exec-all.h"
e67db06e JL	435
	436	static inline target_ulong cpu_get_pc(CPUOpenRISCState *env)
	437	{
	438	return env->pc;
	439	}
	440
	441	static inline void cpu_pc_from_tb(CPUOpenRISCState env, TranslationBlock tb)
	442	{
	443	env->pc = tb->pc;
	444	}
	445
	446	#endif /* CPU_OPENRISC_H */