qemu/target-sparc/helper.c

/*
 *  sparc helpers
 *
 *  Copyright (c) 2003-2005 Fabrice Bellard
 *
 * 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/>.
 */
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>

#include "cpu.h"
#include "qemu-common.h"

//#define DEBUG_MMU
//#define DEBUG_FEATURES

#ifdef DEBUG_MMU
#define DPRINTF_MMU(fmt, ...) \
    do { printf("MMU: " fmt , ## __VA_ARGS__); } while (0)
#else
#define DPRINTF_MMU(fmt, ...) do {} while (0)
#endif

static int cpu_sparc_find_by_name(sparc_def_t *cpu_def, const char *cpu_model);

/* Sparc MMU emulation */

#if defined(CONFIG_USER_ONLY)

int cpu_sparc_handle_mmu_fault(CPUState *env1, target_ulong address, int rw,
                               int mmu_idx)
{
    if (rw & 2)
        env1->exception_index = TT_TFAULT;
    else
        env1->exception_index = TT_DFAULT;
    return 1;
}

#else

#ifndef TARGET_SPARC64
/*
 * Sparc V8 Reference MMU (SRMMU)
 */
static const int access_table[8][8] = {
    { 0, 0, 0, 0, 8, 0, 12, 12 },
    { 0, 0, 0, 0, 8, 0, 0, 0 },
    { 8, 8, 0, 0, 0, 8, 12, 12 },
    { 8, 8, 0, 0, 0, 8, 0, 0 },
    { 8, 0, 8, 0, 8, 8, 12, 12 },
    { 8, 0, 8, 0, 8, 0, 8, 0 },
    { 8, 8, 8, 0, 8, 8, 12, 12 },
    { 8, 8, 8, 0, 8, 8, 8, 0 }
};

static const int perm_table[2][8] = {
    {
        PAGE_READ,
        PAGE_READ | PAGE_WRITE,
        PAGE_READ | PAGE_EXEC,
        PAGE_READ | PAGE_WRITE | PAGE_EXEC,
        PAGE_EXEC,
        PAGE_READ | PAGE_WRITE,
        PAGE_READ | PAGE_EXEC,
        PAGE_READ | PAGE_WRITE | PAGE_EXEC
    },
    {
        PAGE_READ,
        PAGE_READ | PAGE_WRITE,
        PAGE_READ | PAGE_EXEC,
        PAGE_READ | PAGE_WRITE | PAGE_EXEC,
        PAGE_EXEC,
        PAGE_READ,
        0,
        0,
    }
};

static int get_physical_address(CPUState *env, target_phys_addr_t *physical,
                                int *prot, int *access_index,
                                target_ulong address, int rw, int mmu_idx,
                                target_ulong *page_size)
{
    int access_perms = 0;
    target_phys_addr_t pde_ptr;
    uint32_t pde;
    int error_code = 0, is_dirty, is_user;
    unsigned long page_offset;

    is_user = mmu_idx == MMU_USER_IDX;

    if ((env->mmuregs[0] & MMU_E) == 0) { /* MMU disabled */
        *page_size = TARGET_PAGE_SIZE;
        // Boot mode: instruction fetches are taken from PROM
        if (rw == 2 && (env->mmuregs[0] & env->def->mmu_bm)) {
            *physical = env->prom_addr | (address & 0x7ffffULL);
            *prot = PAGE_READ | PAGE_EXEC;
            return 0;
        }
        *physical = address;
        *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
        return 0;
    }

    *access_index = ((rw & 1) << 2) | (rw & 2) | (is_user? 0 : 1);
    *physical = 0xffffffffffff0000ULL;

    /* SPARC reference MMU table walk: Context table->L1->L2->PTE */
    /* Context base + context number */
    pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 2);
    pde = ldl_phys(pde_ptr);

    /* Ctx pde */
    switch (pde & PTE_ENTRYTYPE_MASK) {
    default:
    case 0: /* Invalid */
        return 1 << 2;
    case 2: /* L0 PTE, maybe should not happen? */
    case 3: /* Reserved */
        return 4 << 2;
    case 1: /* L0 PDE */
        pde_ptr = ((address >> 22) & ~3) + ((pde & ~3) << 4);
        pde = ldl_phys(pde_ptr);

        switch (pde & PTE_ENTRYTYPE_MASK) {
        default:
        case 0: /* Invalid */
            return (1 << 8) | (1 << 2);
        case 3: /* Reserved */
            return (1 << 8) | (4 << 2);
        case 1: /* L1 PDE */
            pde_ptr = ((address & 0xfc0000) >> 16) + ((pde & ~3) << 4);
            pde = ldl_phys(pde_ptr);

            switch (pde & PTE_ENTRYTYPE_MASK) {
            default:
            case 0: /* Invalid */
                return (2 << 8) | (1 << 2);
            case 3: /* Reserved */
                return (2 << 8) | (4 << 2);
            case 1: /* L2 PDE */
                pde_ptr = ((address & 0x3f000) >> 10) + ((pde & ~3) << 4);
                pde = ldl_phys(pde_ptr);

                switch (pde & PTE_ENTRYTYPE_MASK) {
                default:
                case 0: /* Invalid */
                    return (3 << 8) | (1 << 2);
                case 1: /* PDE, should not happen */
                case 3: /* Reserved */
                    return (3 << 8) | (4 << 2);
                case 2: /* L3 PTE */
                    page_offset = (address & TARGET_PAGE_MASK) &
                        (TARGET_PAGE_SIZE - 1);
                }
                *page_size = TARGET_PAGE_SIZE;
                break;
            case 2: /* L2 PTE */
                page_offset = address & 0x3ffff;
                *page_size = 0x40000;
            }
            break;
        case 2: /* L1 PTE */
            page_offset = address & 0xffffff;
            *page_size = 0x1000000;
        }
    }

    /* check access */
    access_perms = (pde & PTE_ACCESS_MASK) >> PTE_ACCESS_SHIFT;
    error_code = access_table[*access_index][access_perms];
    if (error_code && !((env->mmuregs[0] & MMU_NF) && is_user))
        return error_code;

    /* update page modified and dirty bits */
    is_dirty = (rw & 1) && !(pde & PG_MODIFIED_MASK);
    if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
        pde |= PG_ACCESSED_MASK;
        if (is_dirty)
            pde |= PG_MODIFIED_MASK;
        stl_phys_notdirty(pde_ptr, pde);
    }

    /* the page can be put in the TLB */
    *prot = perm_table[is_user][access_perms];
    if (!(pde & PG_MODIFIED_MASK)) {
        /* only set write access if already dirty... otherwise wait
           for dirty access */
        *prot &= ~PAGE_WRITE;
    }

    /* Even if large ptes, we map only one 4KB page in the cache to
       avoid filling it too fast */
    *physical = ((target_phys_addr_t)(pde & PTE_ADDR_MASK) << 4) + page_offset;
    return error_code;
}

/* Perform address translation */
int cpu_sparc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
                              int mmu_idx)
{
    target_phys_addr_t paddr;
    target_ulong vaddr;
    target_ulong page_size;
    int error_code = 0, prot, access_index;

    error_code = get_physical_address(env, &paddr, &prot, &access_index,
                                      address, rw, mmu_idx, &page_size);
    if (error_code == 0) {
        vaddr = address & TARGET_PAGE_MASK;
        paddr &= TARGET_PAGE_MASK;
#ifdef DEBUG_MMU
        printf("Translate at " TARGET_FMT_lx " -> " TARGET_FMT_plx ", vaddr "
               TARGET_FMT_lx "\n", address, paddr, vaddr);
#endif
        tlb_set_page(env, vaddr, paddr, prot, mmu_idx, page_size);
        return 0;
    }

    if (env->mmuregs[3]) /* Fault status register */
        env->mmuregs[3] = 1; /* overflow (not read before another fault) */
    env->mmuregs[3] |= (access_index << 5) | error_code | 2;
    env->mmuregs[4] = address; /* Fault address register */

    if ((env->mmuregs[0] & MMU_NF) || env->psret == 0)  {
        // No fault mode: if a mapping is available, just override
        // permissions. If no mapping is available, redirect accesses to
        // neverland. Fake/overridden mappings will be flushed when
        // switching to normal mode.
        vaddr = address & TARGET_PAGE_MASK;
        prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
        tlb_set_page(env, vaddr, paddr, prot, mmu_idx, TARGET_PAGE_SIZE);
        return 0;
    } else {
        if (rw & 2)
            env->exception_index = TT_TFAULT;
        else
            env->exception_index = TT_DFAULT;
        return 1;
    }
}

target_ulong mmu_probe(CPUState *env, target_ulong address, int mmulev)
{
    target_phys_addr_t pde_ptr;
    uint32_t pde;

    /* Context base + context number */
    pde_ptr = (target_phys_addr_t)(env->mmuregs[1] << 4) +
        (env->mmuregs[2] << 2);
    pde = ldl_phys(pde_ptr);

    switch (pde & PTE_ENTRYTYPE_MASK) {
    default:
    case 0: /* Invalid */
    case 2: /* PTE, maybe should not happen? */
    case 3: /* Reserved */
        return 0;
    case 1: /* L1 PDE */
        if (mmulev == 3)
            return pde;
        pde_ptr = ((address >> 22) & ~3) + ((pde & ~3) << 4);
        pde = ldl_phys(pde_ptr);

        switch (pde & PTE_ENTRYTYPE_MASK) {
        default:
        case 0: /* Invalid */
        case 3: /* Reserved */
            return 0;
        case 2: /* L1 PTE */
            return pde;
        case 1: /* L2 PDE */
            if (mmulev == 2)
                return pde;
            pde_ptr = ((address & 0xfc0000) >> 16) + ((pde & ~3) << 4);
            pde = ldl_phys(pde_ptr);

            switch (pde & PTE_ENTRYTYPE_MASK) {
            default:
            case 0: /* Invalid */
            case 3: /* Reserved */
                return 0;
            case 2: /* L2 PTE */
                return pde;
            case 1: /* L3 PDE */
                if (mmulev == 1)
                    return pde;
                pde_ptr = ((address & 0x3f000) >> 10) + ((pde & ~3) << 4);
                pde = ldl_phys(pde_ptr);

                switch (pde & PTE_ENTRYTYPE_MASK) {
                default:
                case 0: /* Invalid */
                case 1: /* PDE, should not happen */
                case 3: /* Reserved */
                    return 0;
                case 2: /* L3 PTE */
                    return pde;
                }
            }
        }
    }
    return 0;
}

void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUState *env)
{
    target_ulong va, va1, va2;
    unsigned int n, m, o;
    target_phys_addr_t pde_ptr, pa;
    uint32_t pde;

    pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 2);
    pde = ldl_phys(pde_ptr);
    (*cpu_fprintf)(f, "Root ptr: " TARGET_FMT_plx ", ctx: %d\n",
                   (target_phys_addr_t)env->mmuregs[1] << 4, env->mmuregs[2]);
    for (n = 0, va = 0; n < 256; n++, va += 16 * 1024 * 1024) {
        pde = mmu_probe(env, va, 2);
        if (pde) {
            pa = cpu_get_phys_page_debug(env, va);
            (*cpu_fprintf)(f, "VA: " TARGET_FMT_lx ", PA: " TARGET_FMT_plx
                           " PDE: " TARGET_FMT_lx "\n", va, pa, pde);
            for (m = 0, va1 = va; m < 64; m++, va1 += 256 * 1024) {
                pde = mmu_probe(env, va1, 1);
                if (pde) {
                    pa = cpu_get_phys_page_debug(env, va1);
                    (*cpu_fprintf)(f, " VA: " TARGET_FMT_lx ", PA: "
                                   TARGET_FMT_plx " PDE: " TARGET_FMT_lx "\n",
                                   va1, pa, pde);
                    for (o = 0, va2 = va1; o < 64; o++, va2 += 4 * 1024) {
                        pde = mmu_probe(env, va2, 0);
                        if (pde) {
                            pa = cpu_get_phys_page_debug(env, va2);
                            (*cpu_fprintf)(f, "  VA: " TARGET_FMT_lx ", PA: "
                                           TARGET_FMT_plx " PTE: "
                                           TARGET_FMT_lx "\n",
                                           va2, pa, pde);
                        }
                    }
                }
            }
        }
    }
}

#if !defined(CONFIG_USER_ONLY)

/* Gdb expects all registers windows to be flushed in ram. This function handles
 * reads (and only reads) in stack frames as if windows were flushed. We assume
 * that the sparc ABI is followed.
 */
int target_memory_rw_debug(CPUState *env, target_ulong addr,
                           uint8_t *buf, int len, int is_write)
{
    int i;
    int len1;
    int cwp = env->cwp;

    if (!is_write) {
        for (i = 0; i < env->nwindows; i++) {
            int off;
            target_ulong fp = env->regbase[cwp * 16 + 22];

            /* Assume fp == 0 means end of frame.  */
            if (fp == 0) {
                break;
            }

            cwp = cpu_cwp_inc(env, cwp + 1);

            /* Invalid window ? */
            if (env->wim & (1 << cwp)) {
                break;
            }

            /* According to the ABI, the stack is growing downward.  */
            if (addr + len < fp) {
                break;
            }

            /* Not in this frame.  */
            if (addr > fp + 64) {
                continue;
            }

            /* Handle access before this window.  */
            if (addr < fp) {
                len1 = fp - addr;
                if (cpu_memory_rw_debug(env, addr, buf, len1, is_write) != 0) {
                    return -1;
                }
                addr += len1;
                len -= len1;
                buf += len1;
            }

            /* Access byte per byte to registers. Not very efficient but speed
             * is not critical.
             */
            off = addr - fp;
            len1 = 64 - off;

            if (len1 > len) {
                len1 = len;
            }

            for (; len1; len1--) {
                int reg = cwp * 16 + 8 + (off >> 2);
                union {
                    uint32_t v;
                    uint8_t c[4];
                } u;
                u.v = cpu_to_be32(env->regbase[reg]);
                *buf++ = u.c[off & 3];
                addr++;
                len--;
                off++;
            }

            if (len == 0) {
                return 0;
            }
        }
    }
    return cpu_memory_rw_debug(env, addr, buf, len, is_write);
}

#endif  /* !defined(CONFIG_USER_ONLY) */

#else /* !TARGET_SPARC64 */

// 41 bit physical address space
static inline target_phys_addr_t ultrasparc_truncate_physical(uint64_t x)
{
    return x & 0x1ffffffffffULL;
}

/*
 * UltraSparc IIi I/DMMUs
 */

// Returns true if TTE tag is valid and matches virtual address value in context
// requires virtual address mask value calculated from TTE entry size
static inline int ultrasparc_tag_match(SparcTLBEntry *tlb,
                                       uint64_t address, uint64_t context,
                                       target_phys_addr_t *physical)
{
    uint64_t mask;

    switch (TTE_PGSIZE(tlb->tte)) {
    default:
    case 0x0: // 8k
        mask = 0xffffffffffffe000ULL;
        break;
    case 0x1: // 64k
        mask = 0xffffffffffff0000ULL;
        break;
    case 0x2: // 512k
        mask = 0xfffffffffff80000ULL;
        break;
    case 0x3: // 4M
        mask = 0xffffffffffc00000ULL;
        break;
    }

    // valid, context match, virtual address match?
    if (TTE_IS_VALID(tlb->tte) &&
        (TTE_IS_GLOBAL(tlb->tte) || tlb_compare_context(tlb, context))
        && compare_masked(address, tlb->tag, mask))
    {
        // decode physical address
        *physical = ((tlb->tte & mask) | (address & ~mask)) & 0x1ffffffe000ULL;
        return 1;
    }

    return 0;
}

static int get_physical_address_data(CPUState *env,
                                     target_phys_addr_t *physical, int *prot,
                                     target_ulong address, int rw, int mmu_idx)
{
    unsigned int i;
    uint64_t context;
    uint64_t sfsr = 0;

    int is_user = (mmu_idx == MMU_USER_IDX ||
                   mmu_idx == MMU_USER_SECONDARY_IDX);

    if ((env->lsu & DMMU_E) == 0) { /* DMMU disabled */
        *physical = ultrasparc_truncate_physical(address);
        *prot = PAGE_READ | PAGE_WRITE;
        return 0;
    }

    switch(mmu_idx) {
    case MMU_USER_IDX:
    case MMU_KERNEL_IDX:
        context = env->dmmu.mmu_primary_context & 0x1fff;
        sfsr |= SFSR_CT_PRIMARY;
        break;
    case MMU_USER_SECONDARY_IDX:
    case MMU_KERNEL_SECONDARY_IDX:
        context = env->dmmu.mmu_secondary_context & 0x1fff;
        sfsr |= SFSR_CT_SECONDARY;
        break;
    case MMU_NUCLEUS_IDX:
        sfsr |= SFSR_CT_NUCLEUS;
        /* FALLTHRU */
    default:
        context = 0;
        break;
    }

    if (rw == 1) {
        sfsr |= SFSR_WRITE_BIT;
    } else if (rw == 4) {
        sfsr |= SFSR_NF_BIT;
    }

    for (i = 0; i < 64; i++) {
        // ctx match, vaddr match, valid?
        if (ultrasparc_tag_match(&env->dtlb[i], address, context, physical)) {
            int do_fault = 0;

            // access ok?
            /* multiple bits in SFSR.FT may be set on TT_DFAULT */
            if (TTE_IS_PRIV(env->dtlb[i].tte) && is_user) {
                do_fault = 1;
                sfsr |= SFSR_FT_PRIV_BIT; /* privilege violation */

                DPRINTF_MMU("DFAULT at %" PRIx64 " context %" PRIx64
                            " mmu_idx=%d tl=%d\n",
                            address, context, mmu_idx, env->tl);
            }
            if (rw == 4) {
                if (TTE_IS_SIDEEFFECT(env->dtlb[i].tte)) {
                    do_fault = 1;
                    sfsr |= SFSR_FT_NF_E_BIT;
                }
            } else {
                if (TTE_IS_NFO(env->dtlb[i].tte)) {
                    do_fault = 1;
                    sfsr |= SFSR_FT_NFO_BIT;
                }
            }

            if (do_fault) {
                /* faults above are reported with TT_DFAULT. */
                env->exception_index = TT_DFAULT;
            } else if (!TTE_IS_W_OK(env->dtlb[i].tte) && (rw == 1)) {
                do_fault = 1;
                env->exception_index = TT_DPROT;

                DPRINTF_MMU("DPROT at %" PRIx64 " context %" PRIx64
                            " mmu_idx=%d tl=%d\n",
                            address, context, mmu_idx, env->tl);
            }

            if (!do_fault) {
                *prot = PAGE_READ;
                if (TTE_IS_W_OK(env->dtlb[i].tte)) {
                    *prot |= PAGE_WRITE;
                }

                TTE_SET_USED(env->dtlb[i].tte);

                return 0;
            }

            if (env->dmmu.sfsr & SFSR_VALID_BIT) { /* Fault status register */
                sfsr |= SFSR_OW_BIT; /* overflow (not read before
                                        another fault) */
            }

            if (env->pstate & PS_PRIV) {
                sfsr |= SFSR_PR_BIT;
            }

            /* FIXME: ASI field in SFSR must be set */
            env->dmmu.sfsr = sfsr | SFSR_VALID_BIT;

            env->dmmu.sfar = address; /* Fault address register */

            env->dmmu.tag_access = (address & ~0x1fffULL) | context;

            return 1;
        }
    }

    DPRINTF_MMU("DMISS at %" PRIx64 " context %" PRIx64 "\n",
                address, context);

    /*
     * On MMU misses:
     * - UltraSPARC IIi: SFSR and SFAR unmodified
     * - JPS1: SFAR updated and some fields of SFSR updated
     */
    env->dmmu.tag_access = (address & ~0x1fffULL) | context;
    env->exception_index = TT_DMISS;
    return 1;
}

static int get_physical_address_code(CPUState *env,
                                     target_phys_addr_t *physical, int *prot,
                                     target_ulong address, int mmu_idx)
{
    unsigned int i;
    uint64_t context;

    int is_user = (mmu_idx == MMU_USER_IDX ||
                   mmu_idx == MMU_USER_SECONDARY_IDX);

    if ((env->lsu & IMMU_E) == 0 || (env->pstate & PS_RED) != 0) {
        /* IMMU disabled */
        *physical = ultrasparc_truncate_physical(address);
        *prot = PAGE_EXEC;
        return 0;
    }

    if (env->tl == 0) {
        /* PRIMARY context */
        context = env->dmmu.mmu_primary_context & 0x1fff;
    } else {
        /* NUCLEUS context */
        context = 0;
    }

    for (i = 0; i < 64; i++) {
        // ctx match, vaddr match, valid?
        if (ultrasparc_tag_match(&env->itlb[i],
                                 address, context, physical)) {
            // access ok?
            if (TTE_IS_PRIV(env->itlb[i].tte) && is_user) {
                /* Fault status register */
                if (env->immu.sfsr & SFSR_VALID_BIT) {
                    env->immu.sfsr = SFSR_OW_BIT; /* overflow (not read before
                                                     another fault) */
                } else {
                    env->immu.sfsr = 0;
                }
                if (env->pstate & PS_PRIV) {
                    env->immu.sfsr |= SFSR_PR_BIT;
                }
                if (env->tl > 0) {
                    env->immu.sfsr |= SFSR_CT_NUCLEUS;
                }

                /* FIXME: ASI field in SFSR must be set */
                env->immu.sfsr |= SFSR_FT_PRIV_BIT | SFSR_VALID_BIT;
                env->exception_index = TT_TFAULT;

                env->immu.tag_access = (address & ~0x1fffULL) | context;

                DPRINTF_MMU("TFAULT at %" PRIx64 " context %" PRIx64 "\n",
                            address, context);

                return 1;
            }
            *prot = PAGE_EXEC;
            TTE_SET_USED(env->itlb[i].tte);
            return 0;
        }
    }

    DPRINTF_MMU("TMISS at %" PRIx64 " context %" PRIx64 "\n",
                address, context);

    /* Context is stored in DMMU (dmmuregs[1]) also for IMMU */
    env->immu.tag_access = (address & ~0x1fffULL) | context;
    env->exception_index = TT_TMISS;
    return 1;
}

static int get_physical_address(CPUState *env, target_phys_addr_t *physical,
                                int *prot, int *access_index,
                                target_ulong address, int rw, int mmu_idx,
                                target_ulong *page_size)
{
    /* ??? We treat everything as a small page, then explicitly flush
       everything when an entry is evicted.  */
    *page_size = TARGET_PAGE_SIZE;

#if defined (DEBUG_MMU)
    /* safety net to catch wrong softmmu index use from dynamic code */
    if (env->tl > 0 && mmu_idx != MMU_NUCLEUS_IDX) {
        DPRINTF_MMU("get_physical_address %s tl=%d mmu_idx=%d"
                    " primary context=%" PRIx64
                    " secondary context=%" PRIx64
                " address=%" PRIx64
                "\n",
                (rw == 2 ? "CODE" : "DATA"),
                env->tl, mmu_idx,
                env->dmmu.mmu_primary_context,
                env->dmmu.mmu_secondary_context,
                address);
    }
#endif

    if (rw == 2)
        return get_physical_address_code(env, physical, prot, address,
                                         mmu_idx);
    else
        return get_physical_address_data(env, physical, prot, address, rw,
                                         mmu_idx);
}

/* Perform address translation */
int cpu_sparc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
                              int mmu_idx)
{
    target_ulong virt_addr, vaddr;
    target_phys_addr_t paddr;
    target_ulong page_size;
    int error_code = 0, prot, access_index;

    error_code = get_physical_address(env, &paddr, &prot, &access_index,
                                      address, rw, mmu_idx, &page_size);
    if (error_code == 0) {
        virt_addr = address & TARGET_PAGE_MASK;
        vaddr = virt_addr + ((address & TARGET_PAGE_MASK) &
                             (TARGET_PAGE_SIZE - 1));

        DPRINTF_MMU("Translate at %" PRIx64 " -> %" PRIx64 ","
                    " vaddr %" PRIx64
                    " mmu_idx=%d"
                    " tl=%d"
                    " primary context=%" PRIx64
                    " secondary context=%" PRIx64
                    "\n",
                    address, paddr, vaddr, mmu_idx, env->tl,
                    env->dmmu.mmu_primary_context,
                    env->dmmu.mmu_secondary_context);

        tlb_set_page(env, vaddr, paddr, prot, mmu_idx, page_size);
        return 0;
    }
    // XXX
    return 1;
}

void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUState *env)
{
    unsigned int i;
    const char *mask;

    (*cpu_fprintf)(f, "MMU contexts: Primary: %" PRId64 ", Secondary: %"
                   PRId64 "\n",
                   env->dmmu.mmu_primary_context,
                   env->dmmu.mmu_secondary_context);
    if ((env->lsu & DMMU_E) == 0) {
        (*cpu_fprintf)(f, "DMMU disabled\n");
    } else {
        (*cpu_fprintf)(f, "DMMU dump\n");
        for (i = 0; i < 64; i++) {
            switch (TTE_PGSIZE(env->dtlb[i].tte)) {
            default:
            case 0x0:
                mask = "  8k";
                break;
            case 0x1:
                mask = " 64k";
                break;
            case 0x2:
                mask = "512k";
                break;
            case 0x3:
                mask = "  4M";
                break;
            }
            if (TTE_IS_VALID(env->dtlb[i].tte)) {
                (*cpu_fprintf)(f, "[%02u] VA: %" PRIx64 ", PA: %llx"
                               ", %s, %s, %s, %s, ctx %" PRId64 " %s\n",
                               i,
                               env->dtlb[i].tag & (uint64_t)~0x1fffULL,
                               TTE_PA(env->dtlb[i].tte),
                               mask,
                               TTE_IS_PRIV(env->dtlb[i].tte) ? "priv" : "user",
                               TTE_IS_W_OK(env->dtlb[i].tte) ? "RW" : "RO",
                               TTE_IS_LOCKED(env->dtlb[i].tte) ?
                               "locked" : "unlocked",
                               env->dtlb[i].tag & (uint64_t)0x1fffULL,
                               TTE_IS_GLOBAL(env->dtlb[i].tte)?
                               "global" : "local");
            }
        }
    }
    if ((env->lsu & IMMU_E) == 0) {
        (*cpu_fprintf)(f, "IMMU disabled\n");
    } else {
        (*cpu_fprintf)(f, "IMMU dump\n");
        for (i = 0; i < 64; i++) {
            switch (TTE_PGSIZE(env->itlb[i].tte)) {
            default:
            case 0x0:
                mask = "  8k";
                break;
            case 0x1:
                mask = " 64k";
                break;
            case 0x2:
                mask = "512k";
                break;
            case 0x3:
                mask = "  4M";
                break;
            }
            if (TTE_IS_VALID(env->itlb[i].tte)) {
                (*cpu_fprintf)(f, "[%02u] VA: %" PRIx64 ", PA: %llx"
                               ", %s, %s, %s, ctx %" PRId64 " %s\n",
                               i,
                               env->itlb[i].tag & (uint64_t)~0x1fffULL,
                               TTE_PA(env->itlb[i].tte),
                               mask,
                               TTE_IS_PRIV(env->itlb[i].tte) ? "priv" : "user",
                               TTE_IS_LOCKED(env->itlb[i].tte) ?
                               "locked" : "unlocked",
                               env->itlb[i].tag & (uint64_t)0x1fffULL,
                               TTE_IS_GLOBAL(env->itlb[i].tte)?
                               "global" : "local");
            }
        }
    }
}

#endif /* TARGET_SPARC64 */
#endif /* !CONFIG_USER_ONLY */


#if !defined(CONFIG_USER_ONLY)
static int cpu_sparc_get_phys_page(CPUState *env, target_phys_addr_t *phys,
                                   target_ulong addr, int rw, int mmu_idx)
{
    target_ulong page_size;
    int prot, access_index;

    return get_physical_address(env, phys, &prot, &access_index, addr, rw,
                                mmu_idx, &page_size);
}

#if defined(TARGET_SPARC64)
target_phys_addr_t cpu_get_phys_page_nofault(CPUState *env, target_ulong addr,
                                           int mmu_idx)
{
    target_phys_addr_t phys_addr;

    if (cpu_sparc_get_phys_page(env, &phys_addr, addr, 4, mmu_idx) != 0) {
        return -1;
    }
    return phys_addr;
}
#endif

target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
{
    target_phys_addr_t phys_addr;
    int mmu_idx = cpu_mmu_index(env);

    if (cpu_sparc_get_phys_page(env, &phys_addr, addr, 2, mmu_idx) != 0) {
        if (cpu_sparc_get_phys_page(env, &phys_addr, addr, 0, mmu_idx) != 0) {
            return -1;
        }
    }
    if (cpu_get_physical_page_desc(phys_addr) == IO_MEM_UNASSIGNED) {
        return -1;
    }
    return phys_addr;
}
#endif

#ifdef TARGET_SPARC64
#ifdef DEBUG_PCALL
static const char * const excp_names[0x80] = {
    [TT_TFAULT] = "Instruction Access Fault",
    [TT_TMISS] = "Instruction Access MMU Miss",
    [TT_CODE_ACCESS] = "Instruction Access Error",
    [TT_ILL_INSN] = "Illegal Instruction",
    [TT_PRIV_INSN] = "Privileged Instruction",
    [TT_NFPU_INSN] = "FPU Disabled",
    [TT_FP_EXCP] = "FPU Exception",
    [TT_TOVF] = "Tag Overflow",
    [TT_CLRWIN] = "Clean Windows",
    [TT_DIV_ZERO] = "Division By Zero",
    [TT_DFAULT] = "Data Access Fault",
    [TT_DMISS] = "Data Access MMU Miss",
    [TT_DATA_ACCESS] = "Data Access Error",
    [TT_DPROT] = "Data Protection Error",
    [TT_UNALIGNED] = "Unaligned Memory Access",
    [TT_PRIV_ACT] = "Privileged Action",
    [TT_EXTINT | 0x1] = "External Interrupt 1",
    [TT_EXTINT | 0x2] = "External Interrupt 2",
    [TT_EXTINT | 0x3] = "External Interrupt 3",
    [TT_EXTINT | 0x4] = "External Interrupt 4",
    [TT_EXTINT | 0x5] = "External Interrupt 5",
    [TT_EXTINT | 0x6] = "External Interrupt 6",
    [TT_EXTINT | 0x7] = "External Interrupt 7",
    [TT_EXTINT | 0x8] = "External Interrupt 8",
    [TT_EXTINT | 0x9] = "External Interrupt 9",
    [TT_EXTINT | 0xa] = "External Interrupt 10",
    [TT_EXTINT | 0xb] = "External Interrupt 11",
    [TT_EXTINT | 0xc] = "External Interrupt 12",
    [TT_EXTINT | 0xd] = "External Interrupt 13",
    [TT_EXTINT | 0xe] = "External Interrupt 14",
    [TT_EXTINT | 0xf] = "External Interrupt 15",
};
#endif

void do_interrupt(CPUState *env)
{
    int intno = env->exception_index;
    trap_state *tsptr;

#ifdef DEBUG_PCALL
    if (qemu_loglevel_mask(CPU_LOG_INT)) {
        static int count;
        const char *name;

        if (intno < 0 || intno >= 0x180) {
            name = "Unknown";
        } else if (intno >= 0x100) {
            name = "Trap Instruction";
        } else if (intno >= 0xc0) {
            name = "Window Fill";
        } else if (intno >= 0x80) {
            name = "Window Spill";
        } else {
            name = excp_names[intno];
            if (!name) {
                name = "Unknown";
            }
        }

        qemu_log("%6d: %s (v=%04x) pc=%016" PRIx64 " npc=%016" PRIx64
                " SP=%016" PRIx64 "\n",
                count, name, intno,
                env->pc,
                env->npc, env->regwptr[6]);
        log_cpu_state(env, 0);
#if 0
        {
            int i;
            uint8_t *ptr;

            qemu_log("       code=");
            ptr = (uint8_t *)env->pc;
            for (i = 0; i < 16; i++) {
                qemu_log(" %02x", ldub(ptr + i));
            }
            qemu_log("\n");
        }
#endif
        count++;
    }
#endif
#if !defined(CONFIG_USER_ONLY)
    if (env->tl >= env->maxtl) {
        cpu_abort(env, "Trap 0x%04x while trap level (%d) >= MAXTL (%d),"
                  " Error state", env->exception_index, env->tl, env->maxtl);
        return;
    }
#endif
    if (env->tl < env->maxtl - 1) {
        env->tl++;
    } else {
        env->pstate |= PS_RED;
        if (env->tl < env->maxtl) {
            env->tl++;
        }
    }
    tsptr = cpu_tsptr(env);

    tsptr->tstate = (cpu_get_ccr(env) << 32) |
        ((env->asi & 0xff) << 24) | ((env->pstate & 0xf3f) << 8) |
        cpu_get_cwp64(env);
    tsptr->tpc = env->pc;
    tsptr->tnpc = env->npc;
    tsptr->tt = intno;

    switch (intno) {
    case TT_IVEC:
        cpu_change_pstate(env, PS_PEF | PS_PRIV | PS_IG);
        break;
    case TT_TFAULT:
    case TT_DFAULT:
    case TT_TMISS ... TT_TMISS + 3:
    case TT_DMISS ... TT_DMISS + 3:
    case TT_DPROT ... TT_DPROT + 3:
        cpu_change_pstate(env, PS_PEF | PS_PRIV | PS_MG);
        break;
    default:
        cpu_change_pstate(env, PS_PEF | PS_PRIV | PS_AG);
        break;
    }

    if (intno == TT_CLRWIN) {
        cpu_set_cwp(env, cpu_cwp_dec(env, env->cwp - 1));
    } else if ((intno & 0x1c0) == TT_SPILL) {
        cpu_set_cwp(env, cpu_cwp_dec(env, env->cwp - env->cansave - 2));
    } else if ((intno & 0x1c0) == TT_FILL) {
        cpu_set_cwp(env, cpu_cwp_inc(env, env->cwp + 1));
    }
    env->tbr &= ~0x7fffULL;
    env->tbr |= ((env->tl > 1) ? 1 << 14 : 0) | (intno << 5);
    env->pc = env->tbr;
    env->npc = env->pc + 4;
    env->exception_index = -1;
}
#else
#ifdef DEBUG_PCALL
static const char * const excp_names[0x80] = {
    [TT_TFAULT] = "Instruction Access Fault",
    [TT_ILL_INSN] = "Illegal Instruction",
    [TT_PRIV_INSN] = "Privileged Instruction",
    [TT_NFPU_INSN] = "FPU Disabled",
    [TT_WIN_OVF] = "Window Overflow",
    [TT_WIN_UNF] = "Window Underflow",
    [TT_UNALIGNED] = "Unaligned Memory Access",
    [TT_FP_EXCP] = "FPU Exception",
    [TT_DFAULT] = "Data Access Fault",
    [TT_TOVF] = "Tag Overflow",
    [TT_EXTINT | 0x1] = "External Interrupt 1",
    [TT_EXTINT | 0x2] = "External Interrupt 2",
    [TT_EXTINT | 0x3] = "External Interrupt 3",
    [TT_EXTINT | 0x4] = "External Interrupt 4",
    [TT_EXTINT | 0x5] = "External Interrupt 5",
    [TT_EXTINT | 0x6] = "External Interrupt 6",
    [TT_EXTINT | 0x7] = "External Interrupt 7",
    [TT_EXTINT | 0x8] = "External Interrupt 8",
    [TT_EXTINT | 0x9] = "External Interrupt 9",
    [TT_EXTINT | 0xa] = "External Interrupt 10",
    [TT_EXTINT | 0xb] = "External Interrupt 11",
    [TT_EXTINT | 0xc] = "External Interrupt 12",
    [TT_EXTINT | 0xd] = "External Interrupt 13",
    [TT_EXTINT | 0xe] = "External Interrupt 14",
    [TT_EXTINT | 0xf] = "External Interrupt 15",
    [TT_TOVF] = "Tag Overflow",
    [TT_CODE_ACCESS] = "Instruction Access Error",
    [TT_DATA_ACCESS] = "Data Access Error",
    [TT_DIV_ZERO] = "Division By Zero",
    [TT_NCP_INSN] = "Coprocessor Disabled",
};
#endif

void do_interrupt(CPUState *env)
{
    int cwp, intno = env->exception_index;

#ifdef DEBUG_PCALL
    if (qemu_loglevel_mask(CPU_LOG_INT)) {
        static int count;
        const char *name;

        if (intno < 0 || intno >= 0x100) {
            name = "Unknown";
        } else if (intno >= 0x80) {
            name = "Trap Instruction";
        } else {
            name = excp_names[intno];
            if (!name) {
                name = "Unknown";
            }
        }

        qemu_log("%6d: %s (v=%02x) pc=%08x npc=%08x SP=%08x\n",
                count, name, intno,
                env->pc,
                env->npc, env->regwptr[6]);
        log_cpu_state(env, 0);
#if 0
        {
            int i;
            uint8_t *ptr;

            qemu_log("       code=");
            ptr = (uint8_t *)env->pc;
            for (i = 0; i < 16; i++) {
                qemu_log(" %02x", ldub(ptr + i));
            }
            qemu_log("\n");
        }
#endif
        count++;
    }
#endif
#if !defined(CONFIG_USER_ONLY)
    if (env->psret == 0) {
        cpu_abort(env, "Trap 0x%02x while interrupts disabled, Error state",
                  env->exception_index);
        return;
    }
#endif
    env->psret = 0;
    cwp = cpu_cwp_dec(env, env->cwp - 1);
    cpu_set_cwp(env, cwp);
    env->regwptr[9] = env->pc;
    env->regwptr[10] = env->npc;
    env->psrps = env->psrs;
    env->psrs = 1;
    env->tbr = (env->tbr & TBR_BASE_MASK) | (intno << 4);
    env->pc = env->tbr;
    env->npc = env->pc + 4;
    env->exception_index = -1;

#if !defined(CONFIG_USER_ONLY)
    /* IRQ acknowledgment */
    if ((intno & ~15) == TT_EXTINT && env->qemu_irq_ack != NULL) {
        env->qemu_irq_ack(env->irq_manager, intno);
    }
#endif
}
#endif

void cpu_reset(CPUSPARCState *env)
{
    if (qemu_loglevel_mask(CPU_LOG_RESET)) {
        qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
        log_cpu_state(env, 0);
    }

    tlb_flush(env, 1);
    env->cwp = 0;
#ifndef TARGET_SPARC64
    env->wim = 1;
#endif
    env->regwptr = env->regbase + (env->cwp * 16);
    CC_OP = CC_OP_FLAGS;
#if defined(CONFIG_USER_ONLY)
#ifdef TARGET_SPARC64
    env->cleanwin = env->nwindows - 2;
    env->cansave = env->nwindows - 2;
    env->pstate = PS_RMO | PS_PEF | PS_IE;
    env->asi = 0x82; // Primary no-fault
#endif
#else
#if !defined(TARGET_SPARC64)
    env->psret = 0;
    env->psrs = 1;
    env->psrps = 1;
#endif
#ifdef TARGET_SPARC64
    env->pstate = PS_PRIV|PS_RED|PS_PEF|PS_AG;
    env->hpstate = cpu_has_hypervisor(env) ? HS_PRIV : 0;
    env->tl = env->maxtl;
    cpu_tsptr(env)->tt = TT_POWER_ON_RESET;
    env->lsu = 0;
#else
    env->mmuregs[0] &= ~(MMU_E | MMU_NF);
    env->mmuregs[0] |= env->def->mmu_bm;
#endif
    env->pc = 0;
    env->npc = env->pc + 4;
#endif
    env->cache_control = 0;
}

static int cpu_sparc_register(CPUSPARCState *env, const char *cpu_model)
{
    sparc_def_t def1, *def = &def1;

    if (cpu_sparc_find_by_name(def, cpu_model) < 0)
        return -1;

    env->def = g_malloc0(sizeof(*def));
    memcpy(env->def, def, sizeof(*def));
#if defined(CONFIG_USER_ONLY)
    if ((env->def->features & CPU_FEATURE_FLOAT))
        env->def->features |= CPU_FEATURE_FLOAT128;
#endif
    env->cpu_model_str = cpu_model;
    env->version = def->iu_version;
    env->fsr = def->fpu_version;
    env->nwindows = def->nwindows;
#if !defined(TARGET_SPARC64)
    env->mmuregs[0] |= def->mmu_version;
    cpu_sparc_set_id(env, 0);
    env->mxccregs[7] |= def->mxcc_version;
#else
    env->mmu_version = def->mmu_version;
    env->maxtl = def->maxtl;
    env->version |= def->maxtl << 8;
    env->version |= def->nwindows - 1;
#endif
    return 0;
}

static void cpu_sparc_close(CPUSPARCState *env)
{
    free(env->def);
    free(env);
}

CPUSPARCState *cpu_sparc_init(const char *cpu_model)
{
    CPUSPARCState *env;

    env = g_malloc0(sizeof(CPUSPARCState));
    cpu_exec_init(env);

    gen_intermediate_code_init(env);

    if (cpu_sparc_register(env, cpu_model) < 0) {
        cpu_sparc_close(env);
        return NULL;
    }
    qemu_init_vcpu(env);

    return env;
}

void cpu_sparc_set_id(CPUSPARCState *env, unsigned int cpu)
{
#if !defined(TARGET_SPARC64)
    env->mxccregs[7] = ((cpu + 8) & 0xf) << 24;
#endif
}

static const sparc_def_t sparc_defs[] = {
#ifdef TARGET_SPARC64
    {
        .name = "Fujitsu Sparc64",
        .iu_version = ((0x04ULL << 48) | (0x02ULL << 32) | (0ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_12,
        .nwindows = 4,
        .maxtl = 4,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "Fujitsu Sparc64 III",
        .iu_version = ((0x04ULL << 48) | (0x03ULL << 32) | (0ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_12,
        .nwindows = 5,
        .maxtl = 4,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "Fujitsu Sparc64 IV",
        .iu_version = ((0x04ULL << 48) | (0x04ULL << 32) | (0ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_12,
        .nwindows = 8,
        .maxtl = 5,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "Fujitsu Sparc64 V",
        .iu_version = ((0x04ULL << 48) | (0x05ULL << 32) | (0x51ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_12,
        .nwindows = 8,
        .maxtl = 5,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "TI UltraSparc I",
        .iu_version = ((0x17ULL << 48) | (0x10ULL << 32) | (0x40ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_12,
        .nwindows = 8,
        .maxtl = 5,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "TI UltraSparc II",
        .iu_version = ((0x17ULL << 48) | (0x11ULL << 32) | (0x20ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_12,
        .nwindows = 8,
        .maxtl = 5,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "TI UltraSparc IIi",
        .iu_version = ((0x17ULL << 48) | (0x12ULL << 32) | (0x91ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_12,
        .nwindows = 8,
        .maxtl = 5,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "TI UltraSparc IIe",
        .iu_version = ((0x17ULL << 48) | (0x13ULL << 32) | (0x14ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_12,
        .nwindows = 8,
        .maxtl = 5,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "Sun UltraSparc III",
        .iu_version = ((0x3eULL << 48) | (0x14ULL << 32) | (0x34ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_12,
        .nwindows = 8,
        .maxtl = 5,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "Sun UltraSparc III Cu",
        .iu_version = ((0x3eULL << 48) | (0x15ULL << 32) | (0x41ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_3,
        .nwindows = 8,
        .maxtl = 5,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "Sun UltraSparc IIIi",
        .iu_version = ((0x3eULL << 48) | (0x16ULL << 32) | (0x34ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_12,
        .nwindows = 8,
        .maxtl = 5,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "Sun UltraSparc IV",
        .iu_version = ((0x3eULL << 48) | (0x18ULL << 32) | (0x31ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_4,
        .nwindows = 8,
        .maxtl = 5,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "Sun UltraSparc IV+",
        .iu_version = ((0x3eULL << 48) | (0x19ULL << 32) | (0x22ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_12,
        .nwindows = 8,
        .maxtl = 5,
        .features = CPU_DEFAULT_FEATURES | CPU_FEATURE_CMT,
    },
    {
        .name = "Sun UltraSparc IIIi+",
        .iu_version = ((0x3eULL << 48) | (0x22ULL << 32) | (0ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_3,
        .nwindows = 8,
        .maxtl = 5,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "Sun UltraSparc T1",
        // defined in sparc_ifu_fdp.v and ctu.h
        .iu_version = ((0x3eULL << 48) | (0x23ULL << 32) | (0x02ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_sun4v,
        .nwindows = 8,
        .maxtl = 6,
        .features = CPU_DEFAULT_FEATURES | CPU_FEATURE_HYPV | CPU_FEATURE_CMT
        | CPU_FEATURE_GL,
    },
    {
        .name = "Sun UltraSparc T2",
        // defined in tlu_asi_ctl.v and n2_revid_cust.v
        .iu_version = ((0x3eULL << 48) | (0x24ULL << 32) | (0x02ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_sun4v,
        .nwindows = 8,
        .maxtl = 6,
        .features = CPU_DEFAULT_FEATURES | CPU_FEATURE_HYPV | CPU_FEATURE_CMT
        | CPU_FEATURE_GL,
    },
    {
        .name = "NEC UltraSparc I",
        .iu_version = ((0x22ULL << 48) | (0x10ULL << 32) | (0x40ULL << 24)),
        .fpu_version = 0x00000000,
        .mmu_version = mmu_us_12,
        .nwindows = 8,
        .maxtl = 5,
        .features = CPU_DEFAULT_FEATURES,
    },
#else
    {
        .name = "Fujitsu MB86900",
        .iu_version = 0x00 << 24, /* Impl 0, ver 0 */
        .fpu_version = 4 << 17, /* FPU version 4 (Meiko) */
        .mmu_version = 0x00 << 24, /* Impl 0, ver 0 */
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x007ffff0,
        .mmu_cxr_mask = 0x0000003f,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 7,
        .features = CPU_FEATURE_FLOAT | CPU_FEATURE_FSMULD,
    },
    {
        .name = "Fujitsu MB86904",
        .iu_version = 0x04 << 24, /* Impl 0, ver 4 */
        .fpu_version = 4 << 17, /* FPU version 4 (Meiko) */
        .mmu_version = 0x04 << 24, /* Impl 0, ver 4 */
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x00ffffc0,
        .mmu_cxr_mask = 0x000000ff,
        .mmu_sfsr_mask = 0x00016fff,
        .mmu_trcr_mask = 0x00ffffff,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "Fujitsu MB86907",
        .iu_version = 0x05 << 24, /* Impl 0, ver 5 */
        .fpu_version = 4 << 17, /* FPU version 4 (Meiko) */
        .mmu_version = 0x05 << 24, /* Impl 0, ver 5 */
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0xffffffc0,
        .mmu_cxr_mask = 0x000000ff,
        .mmu_sfsr_mask = 0x00016fff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "LSI L64811",
        .iu_version = 0x10 << 24, /* Impl 1, ver 0 */
        .fpu_version = 1 << 17, /* FPU version 1 (LSI L64814) */
        .mmu_version = 0x10 << 24,
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x007ffff0,
        .mmu_cxr_mask = 0x0000003f,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP | CPU_FEATURE_FSQRT |
        CPU_FEATURE_FSMULD,
    },
    {
        .name = "Cypress CY7C601",
        .iu_version = 0x11 << 24, /* Impl 1, ver 1 */
        .fpu_version = 3 << 17, /* FPU version 3 (Cypress CY7C602) */
        .mmu_version = 0x10 << 24,
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x007ffff0,
        .mmu_cxr_mask = 0x0000003f,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP | CPU_FEATURE_FSQRT |
        CPU_FEATURE_FSMULD,
    },
    {
        .name = "Cypress CY7C611",
        .iu_version = 0x13 << 24, /* Impl 1, ver 3 */
        .fpu_version = 3 << 17, /* FPU version 3 (Cypress CY7C602) */
        .mmu_version = 0x10 << 24,
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x007ffff0,
        .mmu_cxr_mask = 0x0000003f,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP | CPU_FEATURE_FSQRT |
        CPU_FEATURE_FSMULD,
    },
    {
        .name = "TI MicroSparc I",
        .iu_version = 0x41000000,
        .fpu_version = 4 << 17,
        .mmu_version = 0x41000000,
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x007ffff0,
        .mmu_cxr_mask = 0x0000003f,
        .mmu_sfsr_mask = 0x00016fff,
        .mmu_trcr_mask = 0x0000003f,
        .nwindows = 7,
        .features = CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP | CPU_FEATURE_MUL |
        CPU_FEATURE_DIV | CPU_FEATURE_FLUSH | CPU_FEATURE_FSQRT |
        CPU_FEATURE_FMUL,
    },
    {
        .name = "TI MicroSparc II",
        .iu_version = 0x42000000,
        .fpu_version = 4 << 17,
        .mmu_version = 0x02000000,
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x00ffffc0,
        .mmu_cxr_mask = 0x000000ff,
        .mmu_sfsr_mask = 0x00016fff,
        .mmu_trcr_mask = 0x00ffffff,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "TI MicroSparc IIep",
        .iu_version = 0x42000000,
        .fpu_version = 4 << 17,
        .mmu_version = 0x04000000,
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x00ffffc0,
        .mmu_cxr_mask = 0x000000ff,
        .mmu_sfsr_mask = 0x00016bff,
        .mmu_trcr_mask = 0x00ffffff,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "TI SuperSparc 40", // STP1020NPGA
        .iu_version = 0x41000000, // SuperSPARC 2.x
        .fpu_version = 0 << 17,
        .mmu_version = 0x00000800, // SuperSPARC 2.x, no MXCC
        .mmu_bm = 0x00002000,
        .mmu_ctpr_mask = 0xffffffc0,
        .mmu_cxr_mask = 0x0000ffff,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "TI SuperSparc 50", // STP1020PGA
        .iu_version = 0x40000000, // SuperSPARC 3.x
        .fpu_version = 0 << 17,
        .mmu_version = 0x01000800, // SuperSPARC 3.x, no MXCC
        .mmu_bm = 0x00002000,
        .mmu_ctpr_mask = 0xffffffc0,
        .mmu_cxr_mask = 0x0000ffff,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "TI SuperSparc 51",
        .iu_version = 0x40000000, // SuperSPARC 3.x
        .fpu_version = 0 << 17,
        .mmu_version = 0x01000000, // SuperSPARC 3.x, MXCC
        .mmu_bm = 0x00002000,
        .mmu_ctpr_mask = 0xffffffc0,
        .mmu_cxr_mask = 0x0000ffff,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .mxcc_version = 0x00000104,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "TI SuperSparc 60", // STP1020APGA
        .iu_version = 0x40000000, // SuperSPARC 3.x
        .fpu_version = 0 << 17,
        .mmu_version = 0x01000800, // SuperSPARC 3.x, no MXCC
        .mmu_bm = 0x00002000,
        .mmu_ctpr_mask = 0xffffffc0,
        .mmu_cxr_mask = 0x0000ffff,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "TI SuperSparc 61",
        .iu_version = 0x44000000, // SuperSPARC 3.x
        .fpu_version = 0 << 17,
        .mmu_version = 0x01000000, // SuperSPARC 3.x, MXCC
        .mmu_bm = 0x00002000,
        .mmu_ctpr_mask = 0xffffffc0,
        .mmu_cxr_mask = 0x0000ffff,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .mxcc_version = 0x00000104,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "TI SuperSparc II",
        .iu_version = 0x40000000, // SuperSPARC II 1.x
        .fpu_version = 0 << 17,
        .mmu_version = 0x08000000, // SuperSPARC II 1.x, MXCC
        .mmu_bm = 0x00002000,
        .mmu_ctpr_mask = 0xffffffc0,
        .mmu_cxr_mask = 0x0000ffff,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .mxcc_version = 0x00000104,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "Ross RT625",
        .iu_version = 0x1e000000,
        .fpu_version = 1 << 17,
        .mmu_version = 0x1e000000,
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x007ffff0,
        .mmu_cxr_mask = 0x0000003f,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "Ross RT620",
        .iu_version = 0x1f000000,
        .fpu_version = 1 << 17,
        .mmu_version = 0x1f000000,
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x007ffff0,
        .mmu_cxr_mask = 0x0000003f,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "BIT B5010",
        .iu_version = 0x20000000,
        .fpu_version = 0 << 17, /* B5010/B5110/B5120/B5210 */
        .mmu_version = 0x20000000,
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x007ffff0,
        .mmu_cxr_mask = 0x0000003f,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP | CPU_FEATURE_FSQRT |
        CPU_FEATURE_FSMULD,
    },
    {
        .name = "Matsushita MN10501",
        .iu_version = 0x50000000,
        .fpu_version = 0 << 17,
        .mmu_version = 0x50000000,
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x007ffff0,
        .mmu_cxr_mask = 0x0000003f,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_FEATURE_FLOAT | CPU_FEATURE_MUL | CPU_FEATURE_FSQRT |
        CPU_FEATURE_FSMULD,
    },
    {
        .name = "Weitek W8601",
        .iu_version = 0x90 << 24, /* Impl 9, ver 0 */
        .fpu_version = 3 << 17, /* FPU version 3 (Weitek WTL3170/2) */
        .mmu_version = 0x10 << 24,
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x007ffff0,
        .mmu_cxr_mask = 0x0000003f,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES,
    },
    {
        .name = "LEON2",
        .iu_version = 0xf2000000,
        .fpu_version = 4 << 17, /* FPU version 4 (Meiko) */
        .mmu_version = 0xf2000000,
        .mmu_bm = 0x00004000,
        .mmu_ctpr_mask = 0x007ffff0,
        .mmu_cxr_mask = 0x0000003f,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES | CPU_FEATURE_TA0_SHUTDOWN,
    },
    {
        .name = "LEON3",
        .iu_version = 0xf3000000,
        .fpu_version = 4 << 17, /* FPU version 4 (Meiko) */
        .mmu_version = 0xf3000000,
        .mmu_bm = 0x00000000,
        .mmu_ctpr_mask = 0x007ffff0,
        .mmu_cxr_mask = 0x0000003f,
        .mmu_sfsr_mask = 0xffffffff,
        .mmu_trcr_mask = 0xffffffff,
        .nwindows = 8,
        .features = CPU_DEFAULT_FEATURES | CPU_FEATURE_TA0_SHUTDOWN |
        CPU_FEATURE_ASR17 | CPU_FEATURE_CACHE_CTRL,
    },
#endif
};

static const char * const feature_name[] = {
    "float",
    "float128",
    "swap",
    "mul",
    "div",
    "flush",
    "fsqrt",
    "fmul",
    "vis1",
    "vis2",
    "fsmuld",
    "hypv",
    "cmt",
    "gl",
};

static void print_features(FILE *f, fprintf_function cpu_fprintf,
                           uint32_t features, const char *prefix)
{
    unsigned int i;

    for (i = 0; i < ARRAY_SIZE(feature_name); i++)
        if (feature_name[i] && (features & (1 << i))) {
            if (prefix)
                (*cpu_fprintf)(f, "%s", prefix);
            (*cpu_fprintf)(f, "%s ", feature_name[i]);
        }
}

static void add_flagname_to_bitmaps(const char *flagname, uint32_t *features)
{
    unsigned int i;

    for (i = 0; i < ARRAY_SIZE(feature_name); i++)
        if (feature_name[i] && !strcmp(flagname, feature_name[i])) {
            *features |= 1 << i;
            return;
        }
    fprintf(stderr, "CPU feature %s not found\n", flagname);
}

static int cpu_sparc_find_by_name(sparc_def_t *cpu_def, const char *cpu_model)
{
    unsigned int i;
    const sparc_def_t *def = NULL;
    char *s = strdup(cpu_model);
    char *featurestr, *name = strtok(s, ",");
    uint32_t plus_features = 0;
    uint32_t minus_features = 0;
    uint64_t iu_version;
    uint32_t fpu_version, mmu_version, nwindows;

    for (i = 0; i < ARRAY_SIZE(sparc_defs); i++) {
        if (strcasecmp(name, sparc_defs[i].name) == 0) {
            def = &sparc_defs[i];
        }
    }
    if (!def)
        goto error;
    memcpy(cpu_def, def, sizeof(*def));

    featurestr = strtok(NULL, ",");
    while (featurestr) {
        char *val;

        if (featurestr[0] == '+') {
            add_flagname_to_bitmaps(featurestr + 1, &plus_features);
        } else if (featurestr[0] == '-') {
            add_flagname_to_bitmaps(featurestr + 1, &minus_features);
        } else if ((val = strchr(featurestr, '='))) {
            *val = 0; val++;
            if (!strcmp(featurestr, "iu_version")) {
                char *err;

                iu_version = strtoll(val, &err, 0);
                if (!*val || *err) {
                    fprintf(stderr, "bad numerical value %s\n", val);
                    goto error;
                }
                cpu_def->iu_version = iu_version;
#ifdef DEBUG_FEATURES
                fprintf(stderr, "iu_version %" PRIx64 "\n", iu_version);
#endif
            } else if (!strcmp(featurestr, "fpu_version")) {
                char *err;

                fpu_version = strtol(val, &err, 0);
                if (!*val || *err) {
                    fprintf(stderr, "bad numerical value %s\n", val);
                    goto error;
                }
                cpu_def->fpu_version = fpu_version;
#ifdef DEBUG_FEATURES
                fprintf(stderr, "fpu_version %x\n", fpu_version);
#endif
            } else if (!strcmp(featurestr, "mmu_version")) {
                char *err;

                mmu_version = strtol(val, &err, 0);
                if (!*val || *err) {
                    fprintf(stderr, "bad numerical value %s\n", val);
                    goto error;
                }
                cpu_def->mmu_version = mmu_version;
#ifdef DEBUG_FEATURES
                fprintf(stderr, "mmu_version %x\n", mmu_version);
#endif
            } else if (!strcmp(featurestr, "nwindows")) {
                char *err;

                nwindows = strtol(val, &err, 0);
                if (!*val || *err || nwindows > MAX_NWINDOWS ||
                    nwindows < MIN_NWINDOWS) {
                    fprintf(stderr, "bad numerical value %s\n", val);
                    goto error;
                }
                cpu_def->nwindows = nwindows;
#ifdef DEBUG_FEATURES
                fprintf(stderr, "nwindows %d\n", nwindows);
#endif
            } else {
                fprintf(stderr, "unrecognized feature %s\n", featurestr);
                goto error;
            }
        } else {
            fprintf(stderr, "feature string `%s' not in format "
                    "(+feature|-feature|feature=xyz)\n", featurestr);
            goto error;
        }
        featurestr = strtok(NULL, ",");
    }
    cpu_def->features |= plus_features;
    cpu_def->features &= ~minus_features;
#ifdef DEBUG_FEATURES
    print_features(stderr, fprintf, cpu_def->features, NULL);
#endif
    free(s);
    return 0;

 error:
    free(s);
    return -1;
}

void sparc_cpu_list(FILE *f, fprintf_function cpu_fprintf)
{
    unsigned int i;

    for (i = 0; i < ARRAY_SIZE(sparc_defs); i++) {
        (*cpu_fprintf)(f, "Sparc %16s IU " TARGET_FMT_lx " FPU %08x MMU %08x NWINS %d ",
                       sparc_defs[i].name,
                       sparc_defs[i].iu_version,
                       sparc_defs[i].fpu_version,
                       sparc_defs[i].mmu_version,
                       sparc_defs[i].nwindows);
        print_features(f, cpu_fprintf, CPU_DEFAULT_FEATURES &
                       ~sparc_defs[i].features, "-");
        print_features(f, cpu_fprintf, ~CPU_DEFAULT_FEATURES &
                       sparc_defs[i].features, "+");
        (*cpu_fprintf)(f, "\n");
    }
    (*cpu_fprintf)(f, "Default CPU feature flags (use '-' to remove): ");
    print_features(f, cpu_fprintf, CPU_DEFAULT_FEATURES, NULL);
    (*cpu_fprintf)(f, "\n");
    (*cpu_fprintf)(f, "Available CPU feature flags (use '+' to add): ");
    print_features(f, cpu_fprintf, ~CPU_DEFAULT_FEATURES, NULL);
    (*cpu_fprintf)(f, "\n");
    (*cpu_fprintf)(f, "Numerical features (use '=' to set): iu_version "
                   "fpu_version mmu_version nwindows\n");
}

static void cpu_print_cc(FILE *f, fprintf_function cpu_fprintf,
                         uint32_t cc)
{
    cpu_fprintf(f, "%c%c%c%c", cc & PSR_NEG? 'N' : '-',
                cc & PSR_ZERO? 'Z' : '-', cc & PSR_OVF? 'V' : '-',
                cc & PSR_CARRY? 'C' : '-');
}

#ifdef TARGET_SPARC64
#define REGS_PER_LINE 4
#else
#define REGS_PER_LINE 8
#endif

void cpu_dump_state(CPUState *env, FILE *f, fprintf_function cpu_fprintf,
                    int flags)
{
    int i, x;

    cpu_fprintf(f, "pc: " TARGET_FMT_lx "  npc: " TARGET_FMT_lx "\n", env->pc,
                env->npc);
    cpu_fprintf(f, "General Registers:\n");

    for (i = 0; i < 8; i++) {
        if (i % REGS_PER_LINE == 0) {
            cpu_fprintf(f, "%%g%d-%d:", i, i + REGS_PER_LINE - 1);
        }
        cpu_fprintf(f, " " TARGET_FMT_lx, env->gregs[i]);
        if (i % REGS_PER_LINE == REGS_PER_LINE - 1) {
            cpu_fprintf(f, "\n");
        }
    }
    cpu_fprintf(f, "\nCurrent Register Window:\n");
    for (x = 0; x < 3; x++) {
        for (i = 0; i < 8; i++) {
            if (i % REGS_PER_LINE == 0) {
                cpu_fprintf(f, "%%%c%d-%d: ",
                            x == 0 ? 'o' : (x == 1 ? 'l' : 'i'),
                            i, i + REGS_PER_LINE - 1);
            }
            cpu_fprintf(f, TARGET_FMT_lx " ", env->regwptr[i + x * 8]);
            if (i % REGS_PER_LINE == REGS_PER_LINE - 1) {
                cpu_fprintf(f, "\n");
            }
        }
    }
    cpu_fprintf(f, "\nFloating Point Registers:\n");
    for (i = 0; i < TARGET_FPREGS; i++) {
        if ((i & 3) == 0)
            cpu_fprintf(f, "%%f%02d:", i);
        cpu_fprintf(f, " %016f", *(float *)&env->fpr[i]);
        if ((i & 3) == 3)
            cpu_fprintf(f, "\n");
    }
#ifdef TARGET_SPARC64
    cpu_fprintf(f, "pstate: %08x ccr: %02x (icc: ", env->pstate,
                (unsigned)cpu_get_ccr(env));
    cpu_print_cc(f, cpu_fprintf, cpu_get_ccr(env) << PSR_CARRY_SHIFT);
    cpu_fprintf(f, " xcc: ");
    cpu_print_cc(f, cpu_fprintf, cpu_get_ccr(env) << (PSR_CARRY_SHIFT - 4));
    cpu_fprintf(f, ") asi: %02x tl: %d pil: %x\n", env->asi, env->tl,
                env->psrpil);
    cpu_fprintf(f, "cansave: %d canrestore: %d otherwin: %d wstate: %d "
                "cleanwin: %d cwp: %d\n",
                env->cansave, env->canrestore, env->otherwin, env->wstate,
                env->cleanwin, env->nwindows - 1 - env->cwp);
    cpu_fprintf(f, "fsr: " TARGET_FMT_lx " y: " TARGET_FMT_lx " fprs: "
                TARGET_FMT_lx "\n", env->fsr, env->y, env->fprs);
#else
    cpu_fprintf(f, "psr: %08x (icc: ", cpu_get_psr(env));
    cpu_print_cc(f, cpu_fprintf, cpu_get_psr(env));
    cpu_fprintf(f, " SPE: %c%c%c) wim: %08x\n", env->psrs? 'S' : '-',
                env->psrps? 'P' : '-', env->psret? 'E' : '-',
                env->wim);
    cpu_fprintf(f, "fsr: " TARGET_FMT_lx " y: " TARGET_FMT_lx "\n",
                env->fsr, env->y);
#endif
}