Archipelago » qemu

#ifndef CPU_SPARC_H

#define CPU_SPARC_H

#define TARGET_LONG_BITS 32

#include "cpu-defs.h"

/*#define EXCP_INTERRUPT 0x100*/

/* trap definitions */

#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_FP_EXCP  0x08

#define TT_DIV_ZERO 0x2a

#define TT_TRAP     0x80

#define TT_EXTINT   0x10

#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

/* Fake impl 0, version 4 */

#define GET_PSR(env) ((0 << 28) | (4 << 24) | env->psr |                \

                      (env->psref? PSR_EF : 0) |                        \

                      (env->psrpil << 8) |                                \

                      (env->psrs? PSR_S : 0) |                                \

                      (env->psrs? PSR_PS : 0) |                                \

                      (env->psret? PSR_ET : 0) | env->cwp)

#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;                                \

        set_cwp(_tmp & PSR_CWP & (NWINDOWS - 1));                        \

    } while (0)

/* Trap base register */

#define TBR_BASE_MASK 0xfffff000

/* 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_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)

#define NWINDOWS  32

typedef struct CPUSPARCState {

    uint32_t gregs[8]; /* general registers */

    uint32_t *regwptr; /* pointer to current register window */

    float    fpr[32];  /* floating point registers */

    uint32_t pc;       /* program counter */

    uint32_t npc;      /* next program counter */

    uint32_t y;        /* multiply/divide register */

    uint32_t psr;      /* processor state register */

    uint32_t fsr;      /* FPU state register */

    uint32_t T2;

    uint32_t cwp;      /* index of current register window (extracted

                          from PSR) */

    uint32_t wim;      /* window invalid mask */

    uint32_t tbr;      /* trap base register */

    int      psrs;     /* supervisor mode (extracted from PSR) */

    int      psrps;    /* previous supervisor mode */

    int      psret;    /* enable traps */

    int      psrpil;   /* interrupt level */

    int      psref;    /* enable fpu */

    jmp_buf  jmp_env;

    int user_mode_only;

    int exception_index;

    int interrupt_index;

    int interrupt_request;

    uint32_t exception_next_pc;

    struct TranslationBlock *current_tb;

    void *opaque;

    /* NOTE: we allow 8 more registers to handle wrapping */

    uint32_t regbase[NWINDOWS * 16 + 8];

    /* in order to avoid passing too many arguments to the memory

       write helpers, we store some rarely used information in the CPU

       context) */

    unsigned long mem_write_pc; /* host pc at which the memory was

                                   written */

    unsigned long mem_write_vaddr; /* target virtual addr at which the

                                      memory was written */

    /* 0 = kernel, 1 = user (may have 2 = kernel code, 3 = user code ?) */

    CPUTLBEntry tlb_read[2][CPU_TLB_SIZE];

    CPUTLBEntry tlb_write[2][CPU_TLB_SIZE];

    int error_code;

    /* MMU regs */

    uint32_t mmuregs[16];

    /* temporary float registers */

    float ft0, ft1, ft2;

    double dt0, dt1, dt2;

    /* ice debug support */

    uint32_t breakpoints[MAX_BREAKPOINTS];

    int nb_breakpoints;

    int singlestep_enabled; /* XXX: should use CPU single step mode instead */

} CPUSPARCState;

CPUSPARCState *cpu_sparc_init(void);

int cpu_sparc_exec(CPUSPARCState *s);

int cpu_sparc_close(CPUSPARCState *s);

void cpu_get_fp64(uint64_t *pmant, uint16_t *pexp, double f);

double cpu_put_fp64(uint64_t mant, uint16_t exp);

struct siginfo;

int cpu_sparc_signal_handler(int hostsignum, struct siginfo *info, void *puc);

#define TARGET_PAGE_BITS 12 /* 4k */

#include "cpu-all.h"

#endif