path: root/target-sparc/cpu.h

#ifndef CPU_SPARC_H
#define CPU_SPARC_H

#include "config.h"

#if !defined(TARGET_SPARC64)
#define TARGET_LONG_BITS 32
#define TARGET_FPREGS 32
#define TARGET_PAGE_BITS 12 /* 4k */
#else
#define TARGET_LONG_BITS 64
#define TARGET_FPREGS 64
#define TARGET_PAGE_BITS 13 /* 8k */
#endif

#define TARGET_PHYS_ADDR_BITS 64

#include "cpu-defs.h"

#include "softfloat.h"

#define TARGET_HAS_ICE 1

#if !defined(TARGET_SPARC64)
#define ELF_MACHINE     EM_SPARC
#else
#define ELF_MACHINE     EM_SPARCV9
#endif

/*#define EXCP_INTERRUPT 0x100*/

/* trap definitions */
#ifndef TARGET_SPARC64
#define TT_TFAULT   0x01
#define TT_ILL_INSN 0x02
#define TT_PRIV_INSN 0x03
#define TT_NFPU_INSN 0x04
#define TT_WIN_OVF  0x05
#define TT_WIN_UNF  0x06
#define TT_UNALIGNED 0x07
#define TT_FP_EXCP  0x08
#define TT_DFAULT   0x09
#define TT_TOVF     0x0a
#define TT_EXTINT   0x10
#define TT_CODE_ACCESS 0x21
#define TT_DATA_ACCESS 0x29
#define TT_DIV_ZERO 0x2a
#define TT_NCP_INSN 0x24
#define TT_TRAP     0x80
#else
#define TT_TFAULT   0x08
#define TT_TMISS    0x09
#define TT_CODE_ACCESS 0x0a
#define TT_ILL_INSN 0x10
#define TT_PRIV_INSN 0x11
#define TT_NFPU_INSN 0x20
#define TT_FP_EXCP  0x21
#define TT_TOVF     0x23
#define TT_CLRWIN   0x24
#define TT_DIV_ZERO 0x28
#define TT_DFAULT   0x30
#define TT_DMISS    0x31
#define TT_DATA_ACCESS 0x32
#define TT_DPROT    0x33
#define TT_UNALIGNED 0x34
#define TT_PRIV_ACT 0x37
#define TT_EXTINT   0x40
#define TT_SPILL    0x80
#define TT_FILL     0xc0
#define TT_WOTHER   0x10
#define TT_TRAP     0x100
#endif

#define PSR_NEG   (1<<23)
#define PSR_ZERO  (1<<22)
#define PSR_OVF   (1<<21)
#define PSR_CARRY (1<<20)
#define PSR_ICC   (PSR_NEG|PSR_ZERO|PSR_OVF|PSR_CARRY)
#define PSR_EF    (1<<12)
#define PSR_PIL   0xf00
#define PSR_S     (1<<7)
#define PSR_PS    (1<<6)
#define PSR_ET    (1<<5)
#define PSR_CWP   0x1f

/* Trap base register */
#define TBR_BASE_MASK 0xfffff000

#if defined(TARGET_SPARC64)
#define PS_IG    (1<<11)
#define PS_MG    (1<<10)
#define PS_RMO   (1<<7)
#define PS_RED   (1<<5)
#define PS_PEF   (1<<4)
#define PS_AM    (1<<3)
#define PS_PRIV  (1<<2)
#define PS_IE    (1<<1)
#define PS_AG    (1<<0)

#define FPRS_FEF (1<<2)

#define HS_PRIV  (1<<2)
#endif

/* Fcc */
#define FSR_RD1        (1<<31)
#define FSR_RD0        (1<<30)
#define FSR_RD_MASK    (FSR_RD1 | FSR_RD0)
#define FSR_RD_NEAREST 0
#define FSR_RD_ZERO    FSR_RD0
#define FSR_RD_POS     FSR_RD1
#define FSR_RD_NEG     (FSR_RD1 | FSR_RD0)

#define FSR_NVM   (1<<27)
#define FSR_OFM   (1<<26)
#define FSR_UFM   (1<<25)
#define FSR_DZM   (1<<24)
#define FSR_NXM   (1<<23)
#define FSR_TEM_MASK (FSR_NVM | FSR_OFM | FSR_UFM | FSR_DZM | FSR_NXM)

#define FSR_NVA   (1<<9)
#define FSR_OFA   (1<<8)
#define FSR_UFA   (1<<7)
#define FSR_DZA   (1<<6)
#define FSR_NXA   (1<<5)
#define FSR_AEXC_MASK (FSR_NVA | FSR_OFA | FSR_UFA | FSR_DZA | FSR_NXA)

#define FSR_NVC   (1<<4)
#define FSR_OFC   (1<<3)
#define FSR_UFC   (1<<2)
#define FSR_DZC   (1<<1)
#define FSR_NXC   (1<<0)
#define FSR_CEXC_MASK (FSR_NVC | FSR_OFC | FSR_UFC | FSR_DZC | FSR_NXC)

#define FSR_FTT2   (1<<16)
#define FSR_FTT1   (1<<15)
#define FSR_FTT0   (1<<14)
#define FSR_FTT_MASK (FSR_FTT2 | FSR_FTT1 | FSR_FTT0)
#define FSR_FTT_IEEE_EXCP (1 << 14)
#define FSR_FTT_UNIMPFPOP (3 << 14)
#define FSR_FTT_SEQ_ERROR (4 << 14)
#define FSR_FTT_INVAL_FPR (6 << 14)

#define FSR_FCC1  (1<<11)
#define FSR_FCC0  (1<<10)

/* MMU */
#define MMU_E     (1<<0)
#define MMU_NF    (1<<1)

#define PTE_ENTRYTYPE_MASK 3
#define PTE_ACCESS_MASK    0x1c
#define PTE_ACCESS_SHIFT   2
#define PTE_PPN_SHIFT      7
#define PTE_ADDR_MASK      0xffffff00

#define PG_ACCESSED_BIT 5
#define PG_MODIFIED_BIT 6
#define PG_CACHE_BIT    7

#define PG_ACCESSED_MASK (1 << PG_ACCESSED_BIT)
#define PG_MODIFIED_MASK (1 << PG_MODIFIED_BIT)
#define PG_CACHE_MASK    (1 << PG_CACHE_BIT)

/* 2 <= NWINDOWS <= 32. In QEMU it must also be a power of two. */
#define NWINDOWS  8

#if !defined(TARGET_SPARC64)
#define NB_MMU_MODES 2
#else
#define NB_MMU_MODES 3
typedef struct trap_state {
    uint64_t tpc;
    uint64_t tnpc;
    uint64_t tstate;
    uint32_t tt;
} trap_state;
#endif

typedef struct CPUSPARCState {
    target_ulong gregs[8]; /* general registers */
    target_ulong *regwptr; /* pointer to current register window */
    float32 fpr[TARGET_FPREGS];  /* floating point registers */
    target_ulong pc;       /* program counter */
    target_ulong npc;      /* next program counter */
    target_ulong y;        /* multiply/divide register */

    /* emulator internal flags handling */
    target_ulong cc_src;
    target_ulong cc_dst;

    uint32_t psr;      /* processor state register */
    target_ulong fsr;      /* FPU state register */
    uint32_t cwp;      /* index of current register window (extracted
                          from PSR) */
    uint32_t wim;      /* window invalid mask */
    target_ulong tbr;  /* trap base register */
    int      psrs;     /* supervisor mode (extracted from PSR) */
    int      psrps;    /* previous supervisor mode */
    int      psret;    /* enable traps */
    uint32_t psrpil;   /* interrupt blocking level */
    uint32_t pil_in;   /* incoming interrupt level bitmap */
    int      psref;    /* enable fpu */
    target_ulong version;
    jmp_buf  jmp_env;
    int user_mode_only;
    int exception_index;
    int interrupt_index;
    int interrupt_request;
    int halted;
    uint32_t mmu_bm;
    uint32_t mmu_ctpr_mask;
    uint32_t mmu_cxr_mask;
    uint32_t mmu_sfsr_mask;
    uint32_t mmu_trcr_mask;
    /* NOTE: we allow 8 more registers to handle wrapping */
    target_ulong regbase[NWINDOWS * 16 + 8];

    CPU_COMMON

    /* MMU regs */
#if defined(TARGET_SPARC64)
    uint64_t lsu;
#define DMMU_E 0x8
#define IMMU_E 0x4
    uint64_t immuregs[16];
    uint64_t dmmuregs[16];
    uint64_t itlb_tag[64];
    uint64_t itlb_tte[64];
    uint64_t dtlb_tag[64];
    uint64_t dtlb_tte[64];
#else
    uint32_t mmuregs[32];
    uint64_t mxccdata[4];
    uint64_t mxccregs[8];
    uint64_t prom_addr;
#endif
    /* temporary float registers */
    float32 ft0, ft1;
    float64 dt0, dt1;
#if defined(CONFIG_USER_ONLY)
    float128 qt0, qt1;
#endif
    float_status fp_status;
#if defined(TARGET_SPARC64)
#define MAXTL 4
    uint64_t t0, t1, t2;
    trap_state *tsptr;
    trap_state ts[MAXTL];
    uint32_t xcc;               /* Extended integer condition codes */
    uint32_t asi;
    uint32_t pstate;
    uint32_t tl;
    uint32_t cansave, canrestore, otherwin, wstate, cleanwin;
    uint64_t agregs[8]; /* alternate general registers */
    uint64_t bgregs[8]; /* backup for normal global registers */
    uint64_t igregs[8]; /* interrupt general registers */
    uint64_t mgregs[8]; /* mmu general registers */
    uint64_t fprs;
    uint64_t tick_cmpr, stick_cmpr;
    void *tick, *stick;
    uint64_t gsr;
    uint32_t gl; // UA2005
    /* UA 2005 hyperprivileged registers */
    uint64_t hpstate, htstate[MAXTL], hintp, htba, hver, hstick_cmpr, ssr;
    void *hstick; // UA 2005
#endif
#if !defined(TARGET_SPARC64) && !defined(reg_T2)
    target_ulong t2;
#endif
} CPUSPARCState;
#if defined(TARGET_SPARC64)
#define GET_FSR32(env) (env->fsr & 0xcfc1ffff)
#define PUT_FSR32(env, val) do { uint32_t _tmp = val;                   \
        env->fsr = (_tmp & 0xcfc1c3ff) | (env->fsr & 0x3f00000000ULL);  \
    } while (0)
#define GET_FSR64(env) (env->fsr & 0x3fcfc1ffffULL)
#define PUT_FSR64(env, val) do { uint64_t _tmp = val;   \
        env->fsr = _tmp & 0x3fcfc1c3ffULL;              \
    } while (0)
#else
#define GET_FSR32(env) (env->fsr)
#define PUT_FSR32(env, val) do { uint32_t _tmp = val;                   \
        env->fsr = (_tmp & 0xcfc1dfff) | (env->fsr & 0x000e0000);       \
    } while (0)
#endif

CPUSPARCState *cpu_sparc_init(const char *cpu_model);
int cpu_sparc_exec(CPUSPARCState *s);
int cpu_sparc_close(CPUSPARCState *s);
void sparc_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt,
                                                 ...));
void cpu_sparc_set_id(CPUSPARCState *env, unsigned int cpu);

#define GET_PSR(env) (env->version | (env->psr & PSR_ICC) |             \
                      (env->psref? PSR_EF : 0) |                        \
                      (env->psrpil << 8) |                              \
                      (env->psrs? PSR_S : 0) |                          \
                      (env->psrps? PSR_PS : 0) |                        \
                      (env->psret? PSR_ET : 0) | env->cwp)

#ifndef NO_CPU_IO_DEFS
void cpu_set_cwp(CPUSPARCState *env1, int new_cwp);
#endif

#define PUT_PSR(env, val) do { int _tmp = val;                          \
        env->psr = _tmp & PSR_ICC;                                      \
        env->psref = (_tmp & PSR_EF)? 1 : 0;                            \
        env->psrpil = (_tmp & PSR_PIL) >> 8;                            \
        env->psrs = (_tmp & PSR_S)? 1 : 0;                              \
        env->psrps = (_tmp & PSR_PS)? 1 : 0;                            \
        env->psret = (_tmp & PSR_ET)? 1 : 0;                            \
        cpu_set_cwp(env, _tmp & PSR_CWP);                               \
    } while (0)

#ifdef TARGET_SPARC64
#define GET_CCR(env) (((env->xcc >> 20) << 4) | ((env->psr & PSR_ICC) >> 20))
#define PUT_CCR(env, val) do { int _tmp = val;                          \
        env->xcc = (_tmp >> 4) << 20;                                           \
        env->psr = (_tmp & 0xf) << 20;                                  \
    } while (0)
#define GET_CWP64(env) (NWINDOWS - 1 - (env)->cwp)
#define PUT_CWP64(env, val) \
    cpu_set_cwp(env, NWINDOWS - 1 - ((val) & (NWINDOWS - 1)))

#endif

int cpu_sparc_signal_handler(int host_signum, void *pinfo, void *puc);
void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec,
                          int is_asi);
void cpu_check_irqs(CPUSPARCState *env);

#define CPUState CPUSPARCState
#define cpu_init cpu_sparc_init
#define cpu_exec cpu_sparc_exec
#define cpu_gen_code cpu_sparc_gen_code
#define cpu_signal_handler cpu_sparc_signal_handler
#define cpu_list sparc_cpu_list

/* MMU modes definitions */
#define MMU_MODE0_SUFFIX _user
#define MMU_MODE1_SUFFIX _kernel
#ifdef TARGET_SPARC64
#define MMU_MODE2_SUFFIX _hypv
#endif
#define MMU_USER_IDX   0
#define MMU_KERNEL_IDX 1
#define MMU_HYPV_IDX   2

static inline int cpu_mmu_index (CPUState *env)
{
#if defined(CONFIG_USER_ONLY)
    return MMU_USER_IDX;
#elif !defined(TARGET_SPARC64)
    return env->psrs;
#else
    if (!env->psrs)
        return MMU_USER_IDX;
    else if ((env->hpstate & HS_PRIV) == 0)
        return MMU_KERNEL_IDX;
    else
        return MMU_HYPV_IDX;
#endif
}

static inline int cpu_fpu_enabled(CPUState *env)
{
#if defined(CONFIG_USER_ONLY)
    return 1;
#elif !defined(TARGET_SPARC64)
    return env->psref;
#else
    return ((env->pstate & PS_PEF) != 0) && ((env->fprs & FPRS_FEF) != 0);
#endif
}

#include "cpu-all.h"

#endif