Archipelago » qemu

/*

 *  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 <signal.h>

#include "cpu.h"

#include "exec-all.h"

#include "qemu-common.h"

//#define DEBUG_MMU

//#define DEBUG_FEATURES

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

/* Sparc MMU emulation */

/* thread support */

static spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED;

void cpu_lock(void)

{

    spin_lock(&global_cpu_lock);

}

void cpu_unlock(void)

{

    spin_unlock(&global_cpu_lock);

}

#if defined(CONFIG_USER_ONLY)

int cpu_sparc_handle_mmu_fault(CPUState *env1, target_ulong address, int rw,

                               int mmu_idx, int is_softmmu)

{

    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)

{

    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 */

        // 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);

                }

                break;

            case 2: /* L2 PTE */

                page_offset = address & 0x3ffff;

            }

            break;

        case 2: /* L1 PTE */

            page_offset = address & 0xffffff;

        }

    }

    /* 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);

    }

    /* 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;

    /* 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, int is_softmmu)

{

    target_phys_addr_t paddr;

    target_ulong vaddr;

    int error_code = 0, prot, ret = 0, access_index;

    error_code = get_physical_address(env, &paddr, &prot, &access_index,

                                      address, rw, mmu_idx);

    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

        ret = tlb_set_page_exec(env, vaddr, paddr, prot, mmu_idx, is_softmmu);

        return ret;

    }

    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;

        ret = tlb_set_page_exec(env, vaddr, paddr, prot, mmu_idx, is_softmmu);

        return ret;

    } 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;

}

#ifdef DEBUG_MMU

void dump_mmu(CPUState *env)

{

    target_ulong va, va1, va2;

    unsigned int n, m, o;

    target_phys_addr_t pde_ptr, pa;

    uint32_t pde;

    printf("MMU dump:\n");

    pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 2);

    pde = ldl_phys(pde_ptr);

    printf("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);

            printf("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);

                    printf(" 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);

                            printf("  VA: " TARGET_FMT_lx ", PA: "

                                   TARGET_FMT_plx " PTE: " TARGET_FMT_lx "\n",

                                   va2, pa, pde);

                        }

                    }

                }

            }

        }

    }

    printf("MMU dump ends\n");

}

#endif /* DEBUG_MMU */

#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

 */

static inline int compare_masked(uint64_t x, uint64_t y, uint64_t mask)

{

    return (x & mask) == (y & mask);

}

// 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,

                                       int is_nucleus)

{

    uint64_t mask;

    switch ((tlb->tte >> 61) & 3) {

    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) &&

        ((is_nucleus && compare_masked(0, tlb->tag, 0x1fff))

         || TTE_IS_GLOBAL(tlb->tte) || compare_masked(context, tlb->tag, 0x1fff))

        && 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 is_user)

{

    unsigned int i;

    uint64_t context;

    int is_nucleus;

    if ((env->lsu & DMMU_E) == 0) { /* DMMU disabled */

        *physical = ultrasparc_truncate_physical(address);

        *prot = PAGE_READ | PAGE_WRITE;

        return 0;

    }

    context = env->dmmu.mmu_primary_context & 0x1fff;

    is_nucleus = env->tl > 0;

    for (i = 0; i < 64; i++) {

        // ctx match, vaddr match, valid?

        if (ultrasparc_tag_match(&env->dtlb[i],

                                 address, context, physical,

                                 is_nucleus)) {

            // access ok?

            if (((env->dtlb[i].tte & 0x4) && is_user) ||

                (!(env->dtlb[i].tte & 0x2) && (rw == 1))) {

                uint8_t fault_type = 0;

                if ((env->dtlb[i].tte & 0x4) && is_user) {

                    fault_type |= 1; /* privilege violation */

                }

                if (env->dmmu.sfsr & 1) /* Fault status register */

                    env->dmmu.sfsr = 2; /* overflow (not read before

                                             another fault) */

                env->dmmu.sfsr |= (is_user << 3) | ((rw == 1) << 2) | 1;

                env->dmmu.sfsr |= (fault_type << 7);

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

                env->exception_index = TT_DFAULT;

#ifdef DEBUG_MMU

                printf("DFAULT at 0x%" PRIx64 "\n", address);

#endif

                return 1;

            }

            *prot = PAGE_READ;

            if (env->dtlb[i].tte & 0x2)

                *prot |= PAGE_WRITE;

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

            return 0;

        }

    }

#ifdef DEBUG_MMU

    printf("DMISS at 0x%" PRIx64 "\n", address);

#endif

    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 is_user)

{

    unsigned int i;

    uint64_t context;

    int is_nucleus;

    if ((env->lsu & IMMU_E) == 0 || (env->pstate & PS_RED) != 0) {

        /* IMMU disabled */

        *physical = ultrasparc_truncate_physical(address);

        *prot = PAGE_EXEC;

        return 0;

    }

    context = env->dmmu.mmu_primary_context & 0x1fff;

    is_nucleus = env->tl > 0;

    for (i = 0; i < 64; i++) {

        // ctx match, vaddr match, valid?

        if (ultrasparc_tag_match(&env->itlb[i],

                                 address, context, physical,

                                 is_nucleus)) {

            // access ok?

            if ((env->itlb[i].tte & 0x4) && is_user) {

                if (env->immu.sfsr) /* Fault status register */

                    env->immu.sfsr = 2; /* overflow (not read before

                                             another fault) */

                env->immu.sfsr |= (is_user << 3) | 1;

                env->exception_index = TT_TFAULT;

#ifdef DEBUG_MMU

                printf("TFAULT at 0x%" PRIx64 "\n", address);

#endif

                return 1;

            }

            *prot = PAGE_EXEC;

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

            return 0;

        }

    }

#ifdef DEBUG_MMU

    printf("TMISS at 0x%" PRIx64 "\n", address);

#endif

    /* 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)

{

    int is_user = mmu_idx == MMU_USER_IDX;

    if (rw == 2)

        return get_physical_address_code(env, physical, prot, address,

                                         is_user);

    else

        return get_physical_address_data(env, physical, prot, address, rw,

                                         is_user);

}

/* Perform address translation */

int cpu_sparc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,

                              int mmu_idx, int is_softmmu)

{

    target_ulong virt_addr, vaddr;

    target_phys_addr_t paddr;

    int error_code = 0, prot, ret = 0, access_index;

    error_code = get_physical_address(env, &paddr, &prot, &access_index,

                                      address, rw, mmu_idx);

    if (error_code == 0) {

        virt_addr = address & TARGET_PAGE_MASK;

        vaddr = virt_addr + ((address & TARGET_PAGE_MASK) &

                             (TARGET_PAGE_SIZE - 1));

#ifdef DEBUG_MMU

        printf("Translate at 0x%" PRIx64 " -> 0x%" PRIx64 ", vaddr 0x%" PRIx64

               "\n", address, paddr, vaddr);

#endif

        ret = tlb_set_page_exec(env, vaddr, paddr, prot, mmu_idx, is_softmmu);

        return ret;

    }

    // XXX

    return 1;

}

#ifdef DEBUG_MMU

void dump_mmu(CPUState *env)

{

    unsigned int i;

    const char *mask;

    printf("MMU contexts: Primary: %" PRId64 ", Secondary: %" PRId64 "\n",

           env->dmmu.mmu_primary_context, env->dmmu.mmu_secondary_context);

    if ((env->lsu & DMMU_E) == 0) {

        printf("DMMU disabled\n");

    } else {

        printf("DMMU dump:\n");

        for (i = 0; i < 64; i++) {

            switch ((env->dtlb[i].tte >> 61) & 3) {

            default:

            case 0x0:

                mask = "  8k";

                break;

            case 0x1:

                mask = " 64k";

                break;

            case 0x2:

                mask = "512k";

                break;

            case 0x3:

                mask = "  4M";

                break;

            }

            if ((env->dtlb[i].tte & 0x8000000000000000ULL) != 0) {

                printf("[%02u] VA: %" PRIx64 ", PA: %" PRIx64

                       ", %s, %s, %s, %s, ctx %" PRId64 " %s\n",

                       i,

                       env->dtlb[i].tag & (uint64_t)~0x1fffULL,

                       env->dtlb[i].tte & (uint64_t)0x1ffffffe000ULL,

                       mask,

                       env->dtlb[i].tte & 0x4? "priv": "user",

                       env->dtlb[i].tte & 0x2? "RW": "RO",

                       env->dtlb[i].tte & 0x40? "locked": "unlocked",

                       env->dtlb[i].tag & (uint64_t)0x1fffULL,

                       TTE_IS_GLOBAL(env->dtlb[i].tag)? "global" : "local");

            }

        }

    }

    if ((env->lsu & IMMU_E) == 0) {

        printf("IMMU disabled\n");

    } else {

        printf("IMMU dump:\n");

        for (i = 0; i < 64; i++) {

            switch ((env->itlb[i].tte >> 61) & 3) {

            default:

            case 0x0:

                mask = "  8k";

                break;

            case 0x1:

                mask = " 64k";

                break;

            case 0x2:

                mask = "512k";

                break;

            case 0x3:

                mask = "  4M";

                break;

            }

            if ((env->itlb[i].tte & 0x8000000000000000ULL) != 0) {

                printf("[%02u] VA: %" PRIx64 ", PA: %" PRIx64

                       ", %s, %s, %s, ctx %" PRId64 " %s\n",

                       i,

                       env->itlb[i].tag & (uint64_t)~0x1fffULL,

                       env->itlb[i].tte & (uint64_t)0x1ffffffe000ULL,

                       mask,

                       env->itlb[i].tte & 0x4? "priv": "user",

                       env->itlb[i].tte & 0x40? "locked": "unlocked",

                       env->itlb[i].tag & (uint64_t)0x1fffULL,

                       TTE_IS_GLOBAL(env->itlb[i].tag)? "global" : "local");

            }

        }

    }

}

#endif /* DEBUG_MMU */

#endif /* TARGET_SPARC64 */

#endif /* !CONFIG_USER_ONLY */

#if defined(CONFIG_USER_ONLY)

target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)

{

    return addr;

}

#else

target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)

{

    target_phys_addr_t phys_addr;

    int prot, access_index;

    if (get_physical_address(env, &phys_addr, &prot, &access_index, addr, 2,

                             MMU_KERNEL_IDX) != 0)

        if (get_physical_address(env, &phys_addr, &prot, &access_index, addr,

                                 0, MMU_KERNEL_IDX) != 0)

            return -1;

    if (cpu_get_physical_page_desc(phys_addr) == IO_MEM_UNASSIGNED)

        return -1;

    return phys_addr;

}

#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;

#endif

    env->psrs = 1;

    env->psrps = 1;

#ifdef TARGET_SPARC64

    env->pstate = PS_PRIV|PS_RED|PS_PEF|PS_AG;

    env->hpstate = HS_PRIV;

    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

}

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 = qemu_mallocz(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 = qemu_mallocz(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,