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C++ KADDR函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中KADDR函数的典型用法代码示例。如果您正苦于以下问题:C++ KADDR函数的具体用法?C++ KADDR怎么用?C++ KADDR使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了KADDR函数的20个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: checkpte

static void
checkpte(uintmem ppn, void *a)
{
	Proc *up = externup();
	int l;
	PTE *pte, *pml4;
	uint64_t addr;
	char buf[240], *s;

	addr = PTR2UINT(a);
	pml4 = UINT2PTR(machp()->pml4->va);
	pte = 0;
	s = buf;
	*s = 0;
	if((l = mmuwalk(pml4, addr, 3, &pte, nil)) < 0 || (*pte&PteP) == 0)
		goto Panic;
	s = seprint(buf, buf+sizeof buf,
		"check3: l%d pte %#p = %llux\n",
		l, pte, pte?*pte:~0);
	if((l = mmuwalk(pml4, addr, 2, &pte, nil)) < 0 || (*pte&PteP) == 0)
		goto Panic;
	s = seprint(s, buf+sizeof buf,
		"check2: l%d  pte %#p = %llux\n",
		l, pte, pte?*pte:~0);
	if(*pte&PtePS)
		return;
	if((l = mmuwalk(pml4, addr, 1, &pte, nil)) < 0 || (*pte&PteP) == 0)
		goto Panic;
	seprint(s, buf+sizeof buf,
		"check1: l%d  pte %#p = %llux\n",
		l, pte, pte?*pte:~0);
	return;
Panic:

	seprint(s, buf+sizeof buf,
		"checkpte: l%d addr %#p ppn %#ullx kaddr %#p pte %#p = %llux",
		l, a, ppn, KADDR(ppn), pte, pte?*pte:~0);
	print("%s\n", buf);
	seprint(buf, buf+sizeof buf, "start %#ullx unused %#ullx"
		" unmap %#ullx end %#ullx\n",
		sys->vmstart, sys->vmunused, sys->vmunmapped, sys->vmend);
	panic("%s", buf);
}
开发者ID:qioixiy,项目名称:harvey,代码行数:43,代码来源:mmu.c


示例2: sanity

static void
sanity(void)
{
	uintptr cr3;

	cr3 = (uintptr)KADDR(getcr3());
	if (cr3 == 0)
		panic("zero cr3");
	if ((uintptr)m->pdb != cr3 || (uintptr)mach0pdb != cr3)
		panic("not all same: cr3 %#p m->pdb %#p mach0pdb %#p",
			cr3, m->pdb, mach0pdb);
	if (m != mach0m)
		panic("m %#p != mach0m %#p", m, mach0m);
	if (m->gdt != mach0gdt)
		panic("m->gdt %#p != mach0gdt %#p", m->gdt, mach0gdt);
	if (0)
		iprint("m->pdb %#p m %#p sp %#p m->gdt %#p\n",
			m->pdb, m, &cr3, m->gdt);
}
开发者ID:carriercomm,项目名称:plan9-gpl,代码行数:19,代码来源:main.c


示例3: env_free

//
// Frees env e and all memory it uses.
// 
void
env_free(struct Env *e)
{
	pte_t *pt;
	uint32_t pdeno, pteno;
	physaddr_t pa;

	// Note the environment's demise.
	cprintf("[%08x] free env %08x\n", curenv ? curenv->env_id : 0, e->env_id);

	// Flush all mapped pages in the user portion of the address space
	static_assert(UTOP % PTSIZE == 0);
	for (pdeno = 0; pdeno < PDX(UTOP); pdeno++) {

		// only look at mapped page tables
		if (!(e->env_pgdir[pdeno] & PTE_P))
			continue;

		// find the pa and va of the page table
		pa = PTE_ADDR(e->env_pgdir[pdeno]);
		pt = (pte_t*) KADDR(pa);

		// unmap all PTEs in this page table
		for (pteno = 0; pteno <= PTX(~0); pteno++) {
			if (pt[pteno] & PTE_P)
				page_remove(e->env_pgdir, PGADDR(pdeno, pteno, 0));
		}

		// free the page table itself
		e->env_pgdir[pdeno] = 0;
		page_decref(pa2page(pa));
	}

	// free the page directory
	pa = e->env_cr3;
	e->env_pgdir = 0;
	e->env_cr3 = 0;
	page_decref(pa2page(pa));

	// return the environment to the free list
	e->env_status = ENV_FREE;
	LIST_INSERT_HEAD(&env_free_list, e, env_link);
}
开发者ID:ren85,项目名称:jos2006,代码行数:46,代码来源:env.c


示例4: check_va2pa

static physaddr_t
check_va2pa(pde_t *pgdir, uintptr_t va)
{
    pte_t *p;

    pgdir = &pgdir[PDX(va)];
    if (!(*pgdir & PTE_P)){
        //cprintf("!(*pgdir & PTE_P)\n");
         return ~0;
    }

    p = (pte_t*) KADDR(PTE_ADDR(*pgdir));
    if (!(p[PTX(va)] & PTE_P)){
       // cprintf("!(p[PTX(va)] & PTE_P)\n");
        return ~0;
    }

    return PTE_ADDR(p[PTX(va)]);
}
开发者ID:yahu,项目名称:JOS,代码行数:19,代码来源:pmap.c


示例5: pml4e_walk

	pte_t *
pml4e_walk(pml4e_t *pml4e, const void *va, int create)
{
	struct Page *newPage = NULL;

	//if(!create) cprintf("va = %0x, pml4e[PML4(va)] = %0x\n", va, pml4e[PML4(va)]);
	if (!pml4e[PML4(va)]) {
		if (!create)
			return NULL;
		else {
			newPage = page_alloc(0);
			if (newPage == 0) {
				return NULL;
			} else {
				newPage->pp_ref++;
				pml4e[PML4(va)] = page2pa(newPage) | PTE_U | PTE_W | PTE_P;
				memset(page2kva(newPage), 0x00, PGSIZE);
			}

		}
	}

	pdpe_t* pdpe = (pdpe_t*)(KADDR((PTE_ADDR(pml4e[PML4(va)]))));
	pte_t *result = pdpe_walk(pdpe, va, create);

	if (!result && newPage) {
		pml4e[PML4(va)] = 0;
		newPage->pp_ref = 0;
		page_free(newPage);
	}

	//return result + PTX(va);

	if (result) {
		return result + PTX(va);
	}
	else {
		return result;
	}


}
开发者ID:ajsbu,项目名称:cse506,代码行数:42,代码来源:pmap.c


示例6: vmap

void *
vmap(ulong phys, ulong length)
{
	ulong virt, off, *l2;

	off = phys % BY2PG;
	length = (ROUNDUP(phys + length, BY2PG) - ROUNDDN(phys, BY2PG)) / BY2PG;
	if(length == 0)
		return nil;
	phys = ROUNDDN(phys, BY2PG);
	virt = getiopages(length);
	l2 = KADDR(IOPT);
	l2 += virt;
	while(length--){
		*l2++ = phys | L2AP(Krw) | Small | PTEIO;
		phys += BY2PG;
	}
	flushtlb();
	return (void *) (IZERO + BY2PG * virt + off);
}
开发者ID:mr-technologies,项目名称:plan9base,代码行数:20,代码来源:mmu.c


示例7: mon_si

int
mon_si(int argc, char **argv, struct Trapframe *tf)
{
    if (tf == NULL) {
        cprintf("Cannot invoke si, no breakpoint exception or debug exception invoked\n");
        return 1;
    }
    if (tf->tf_trapno != T_BRKPT && tf->tf_trapno != T_DEBUG) {
        cprintf("Cannot invoke si, no breakpoint exception or debug exception invoked\n");
        return 1;
    }
    uint32_t opcode;
    pte_t *entry;
    uint32_t address;

    // Get the page table entry of tf_eip,
    // because we in kernel mode
    address = tf->tf_eip;
    entry = pgdir_walk(curenv->env_pgdir, (void *)address, 0);
    // Debug
    if (entry == NULL) {
        panic("Bad address in gdb");
    }

    // Debug info
    address = (uint32_t)KADDR(PTE_ADDR(*entry)) | (address & 0xfff);

    // Debug info
    // print the instruction name
    opcode = *((uint32_t *)address);
    opcode &= 0xff;
    cprintf("Instruction: %s\n", opcnames[(int)opcode]);

    // Debug info
    if (tf->tf_eflags & FL_TF) {
        cprintf("Trap Flag set in EFLAGS\n");
    }
    tf->tf_eflags |= FL_TF | FL_RF;

    return -1;
}
开发者ID:ChenLanbo,项目名称:OS-Lab,代码行数:41,代码来源:debugger.c


示例8: mmuinit

void
mmuinit(void)
{
	ulong *pte, npgs, pa;

	if(paemode){
		int i;
		xenpdpt = (uvlong*)m->pdb;
		m->pdb = xspanalloc(32, 32, 0);
		/* clear "reserved" bits in initial page directory pointers -- Xen bug? */
		for(i = 0; i < 4; i++)
			((uvlong*)m->pdb)[i] = xenpdpt[i] & ~0x1E6LL;
	}

	/* 
	 * So far only memory up to xentop is mapped, map the rest.
	 * We cant use large pages because our contiguous PA space
	 * is not necessarily contiguous in MA.
	 */
	npgs = conf.mem[0].npage;
	for(pa=conf.mem[0].base; npgs; npgs--, pa+=BY2PG) {
		pte = mmuwalk(m->pdb, (ulong)KADDR(pa), 2, 1);
		if(!pte)
			panic("mmuinit");
		xenupdate(pte, pa|PTEVALID|PTEWRITE);
	}

	memglobal();

#ifdef we_may_eventually_want_this
	/* make kernel text unwritable */
	for(x = KTZERO; x < (ulong)etext; x += BY2PG){
		p = mmuwalk(m->pdb, x, 2, 0);
		if(p == nil)
			panic("mmuinit");
		*p &= ~PTEWRITE;
	}
#endif

	taskswitch(0,  (ulong)m + BY2PG);
}
开发者ID:Nurb432,项目名称:plan9front,代码行数:41,代码来源:mmu.c


示例9: check_boot_pgdir

/**
 * Check whether page directory for boot lives well.
 *     NOTE: we don't have mm_struct at present.
 *           as write to a clean page also raises SIGSEGV, we're not able to deal with it now.
 *           so just mark all page inserted to be accessed and dirty.
 */
void
check_boot_pgdir(void) {
    pte_t *ptep;
    int i;
    for (i = 0; i < npage; i += PGSIZE) {
        assert((ptep = get_pte(boot_pgdir, (uintptr_t)KADDR(i), 0)) != NULL);
        assert(PTE_ADDR(*ptep) == i);
    }

    //assert(PDE_ADDR(boot_pgdir[PDX(VPT)]) == PADDR(boot_pgdir));

    assert(boot_pgdir[PDX(TEST_PAGE)] == 0);

    struct Page *p;
    p = alloc_page();
    assert(page_insert(boot_pgdir, p, TEST_PAGE, PTE_W | PTE_D | PTE_A) == 0);
    assert(page_ref(p) == 1);
    assert(page_insert(boot_pgdir, p, TEST_PAGE + PGSIZE, PTE_W | PTE_D | PTE_A) == 0);
    assert(page_ref(p) == 2);

    const char *str = "ucore: Hello world!!";
    strcpy((void *)TEST_PAGE, str);
    assert(strcmp((void *)TEST_PAGE, (void *)(TEST_PAGE + PGSIZE)) == 0);

    *(char *)(page2kva(p)) = '\0';
    assert(strlen((const char *)TEST_PAGE) == 0);

    /*
     * in um architecture clear page table doesn't mean
     *     the linear address is invalid
     * so remove them by hand
     */
    tlb_invalidate (boot_pgdir, TEST_PAGE);
    tlb_invalidate (boot_pgdir, TEST_PAGE + PGSIZE);

    free_page(p);
    free_page(pa2page(PDE_ADDR(boot_pgdir[PDX(TEST_PAGE)])));
    boot_pgdir[PDX(TEST_PAGE)] = 0;

    kprintf("check_boot_pgdir() succeeded.\n");
}
开发者ID:haozhun,项目名称:ucore_plus,代码行数:47,代码来源:pmm.c


示例10: mpshutdown

void
mpshutdown(void)
{
	/*
	 * To be done...
	 */
	if(!canlock(&mpshutdownlock)){
		/*
		 * If this processor received the CTRL-ALT-DEL from
		 * the keyboard, acknowledge it. Send an INIT to self.
		 */
#ifdef FIXTHIS
		if(lapicisr(VectorKBD))
			lapiceoi(VectorKBD);
#endif /* FIX THIS */
		idle();
	}

	print("apshutdown: active = 0x%2.2uX\n", active.machs);
	delay(1000);
	splhi();

	/*
	 * INIT all excluding self.
	 */
	lapicicrw(0, 0x000C0000|ApicINIT);

#ifdef notdef
	/*
	 * Often the BIOS hangs during restart if a conventional 8042
	 * warm-boot sequence is tried. The following is Intel specific and
	 * seems to perform a cold-boot, but at least it comes back.
	 */
	*(ushort*)KADDR(0x472) = 0x1234;	/* BIOS warm-boot flag */
	outb(0xCF9, 0x02);
	outb(0xCF9, 0x06);
#else
	pcireset();
	i8042reset();
#endif /* notdef */
}
开发者ID:8l,项目名称:inferno,代码行数:41,代码来源:mp.c


示例11: MmInitManager

ZVMSTATUS MmInitManager(uint32_t *pgdir,uint32_t *hostcr3)
{
   void *va;
   uint32_t pa,tmp;
   memcpy(hostcr3,pgdir,PGSIZE);

   for(uint32_t i=0; i<1024; i++)
   {
	   if(hostcr3[i]!=0)
	   {
		   va = MmAllocPages(1,&pa);
		   tmp = hostcr3[i];
		   tmp = tmp & 0xfffff000;
		   
		   memcpy(va,KADDR(tmp),PGSIZE); // 从物理地址找虚拟地址
		   hostcr3[i] = hostcr3[i] & 0xfff;
		   hostcr3[i] = hostcr3[i] | pa	;   
	   }
   }	
   return ZVMSUCCESS;
}
开发者ID:fariasvp,项目名称:bluepillstudy,代码行数:21,代码来源:memory.c


示例12: i2csetup

/*
 * called by the reset routine of any driver using the IIC
 */
void
i2csetup(int polling)
{
	I2Cregs *i2c;
	Ctlr *ctlr;

	ctlr = i2cctlr;
	ctlr->polling = polling;
	i2c = KADDR(PHYSI2C);
	ctlr->regs = i2c;
	if(!polling){
		if(ctlr->init == 0){
			initialise(i2c, 1);
			ctlr->init = 1;
			intrenable(IRQ, IRQi2c, interrupt, i2cctlr, "i2c");
			if(Chatty)
				i2cdump("init", i2c);
		}
	}else
		initialise(i2c, 0);
}
开发者ID:8l,项目名称:inferno,代码行数:24,代码来源:i2c.c


示例13: vunmap

void
vunmap(void *virt, ulong length)
{
	ulong v, *l2;
	
	if((ulong)virt < IZERO || (ulong)virt >= IZERO + NIOPAGES * BY2PG)
		panic("vunmap: virt=%p", virt);
	v = (ROUNDDN((ulong) virt, BY2PG) - IZERO) / BY2PG;
	length = (ROUNDUP(((ulong) virt) + length, BY2PG) - ROUNDDN((ulong) virt, BY2PG)) / BY2PG;
	if(length == 0)
		return;
	l2 = KADDR(IOPT);
	l2 += v;
	lock(&iopagelock);
	while(length--){
		*l2++ = 0;
		freeio(v++);
	}
	unlock(&iopagelock);
	flushtlb();
}
开发者ID:mr-technologies,项目名称:plan9base,代码行数:21,代码来源:mmu.c


示例14: unmap_range_pud

static void
unmap_range_pud(pgd_t *pgdir, pud_t *pud, uintptr_t base, uintptr_t start, uintptr_t end) {
#if PUXSHIFT == PGXSHIFT
	unmap_range_pmd (pgdir, pud, base, start, end);
#else
    assert(start >= 0 && start < end && end <= PUSIZE);
    size_t off, size;
    uintptr_t la = ROUNDDOWN(start, PMSIZE);
    do {
        off = start - la, size = PMSIZE - off;
        if (size > end - start) {
            size = end - start;
        }
        pud_t *pudp = &pud[PUX(la)];
        if (ptep_present(pudp)) {
            unmap_range_pmd(pgdir, KADDR(PUD_ADDR(*pudp)), base + la, off, off + size);
        }
        start += size, la += PMSIZE;
    } while (start != 0 && start < end);
#endif
}
开发者ID:chyyuu,项目名称:ucore-arch-arm,代码行数:21,代码来源:pmm.c


示例15: pcmwrite

static long
pcmwrite(int dev, int attr, void *a, long n, vlong off)
{
	int i, len;
	PCMmap *m;
	uchar *ac;
	PCMslot *pp;
	ulong offset = off;

	pp = slot + dev;
	if(pp->memlen < offset)
		return 0;
	if(pp->memlen < offset + n)
		n = pp->memlen - offset;

	m = 0;
	if(waserror()){
		if(m)
			pcmunmap(pp->slotno, m);
		nexterror();
	}

	ac = a;
	for(len = n; len > 0; len -= i){
		m = pcmmap(pp->slotno, offset, 0, attr);
		if(m == 0)
			error("cannot map PCMCIA card");
		if(offset + len > m->cea)
			i = m->cea - offset;
		else
			i = len;
		memmoveb(KADDR(m->isa + offset - m->ca), ac, i);
		pcmunmap(pp->slotno, m);
		offset += i;
		ac += i;
	}

	poperror();
	return n;
}
开发者ID:CoryXie,项目名称:NxM,代码行数:40,代码来源:devi82365.c


示例16: fload

static int
fload(Ctlr *c)
{
	ulong data, io, r, adr;
	ushort sum;
	Flash f;
	Pcidev *p;

//	io = c->pcidev->mem[1].bar & ~0x0f;
//	f.reg = vmap(io, c->pcidev->mem[1].size);
//	if(f.reg == nil)
//		return -1;

	p = c->pcidev;
	io = upamalloc(p->mem[1].bar & ~0x0F, p->mem[1].size, 0);
	if(io == 0){
		print("igbepcie: can't map flash @ 0x%8.8lux\n", p->mem[1].bar);
		return -1;
	}
	f.reg = KADDR(io);

	f.reg32 = (ulong*)f.reg;
	f.sz = f.reg32[Bfpr];
	r = f.sz & 0x1fff;
	if(csr32r(c, Eec) & (1<<22))
		++r;
	r <<= 12;

	sum = 0;
	for (adr = 0; adr < 0x40; adr++) {
		data = fread(c, &f, r + adr*2);
		if(data == -1)
			break;
		c->eeprom[adr] = data;
		sum += data;
	}
//	vunmap(f.reg, c->pcidev->mem[1].size);
	return sum;
}
开发者ID:AustenConrad,项目名称:plan-9,代码行数:39,代码来源:ether82563.c


示例17: pgdir_walk

// Given 'pgdir', a pointer to a page directory, pgdir_walk returns
// a pointer to the page table entry (PTE) for linear address 'va'.
// This requires walking the two-level page table structure.
//
// bluesea
// pgdir_walk具体返回的是: 
// 虚拟地址va, 所在的页面对应的page table 表项的地址,所以是二级页表page table
// 的表项的地址,而非page dir的表项
// (理由分析见check_page()中的相关分析)
// 并且是该地址的虚拟地址!
//
//
// 下面这个需求可能和这个想法有矛盾:PTE_P置为0,即缺页的时候本应该由缺页中断处理。
// 那是另外故事,在这儿,pgdir_walk基本上只用于初始化内核虚拟内存的映射,
// 所以缺页新alloc page table没什么问题。
//
// The relevant page table page might not exist yet.
// If this is true, and create == false, then pgdir_walk returns NULL.
// Otherwise, pgdir_walk allocates a new page table page with page_alloc.
//    - If the allocation fails, pgdir_walk returns NULL.
//    - Otherwise, the new page's reference count is incremented,
//	the page is cleared,
//	and pgdir_walk returns a pointer into the new page table page.
//	(注:这种情况下也是返回页表项的地址,而页目录的地址。页表项的各个FLAG不用管
//	只需要把页目录对应的位置PTE_P置位即可。)
//
// Hint 1: you can turn a PageInfo * into the physical address of the
// page it refers to with page2pa() from kern/pmap.h.
//
// Hint 2: the x86 MMU checks permission bits in both the page directory
// and the page table, so it's safe to leave permissions in the page
// more permissive than strictly necessary.
//
// Hint 3: look at inc/mmu.h for useful macros that mainipulate page
// table and page directory entries.
//
pte_t *
pgdir_walk(pde_t *pgdir, const void *va, int create)
{
	// Fill this function in
	// bluesea
	uint32_t pdx = PDX(va), ptx = PTX(va);
	pde_t *pt = 0;
	if (pgdir[pdx] & PTE_P){
		pt = KADDR(PTE_ADDR(pgdir[pdx]));
		return &pt[ptx];
	}
	if (!create)
		return NULL;
	struct PageInfo *page = page_alloc(ALLOC_ZERO);
	if (!page)
		return NULL;
	page->pp_ref = 1;
	pgdir[pdx] = page2pa(page) | PTE_P | PTE_U;
	pt = page2kva(page);
	//pt[ptx] = PTE_U;
	return &pt[ptx];
}
开发者ID:bluesea147,项目名称:6.828-lab,代码行数:58,代码来源:pmap.c


示例18: mkioapic

static Apic*
mkioapic(PCMPioapic* p)
{
	Apic *apic;

	if(!(p->flags & PcmpEN) || p->apicno > MaxAPICNO)
		return 0;

	/*
	 * Map the I/O APIC.
	 */
	if(mmukmap(p->addr, 0, 1024) == 0)
		return 0;

	apic = &mpapic[p->apicno];
	apic->type = PcmpIOAPIC;
	apic->apicno = p->apicno;
	apic->addr = KADDR(p->addr);
	apic->flags = p->flags;

	return apic;
}
开发者ID:8l,项目名称:inferno,代码行数:22,代码来源:mp.c


示例19: kmap

KMap*
kmap(Page *page)
{
	uintptr *pte, pa, va;
	int x;

	pa = page->pa;
	if(cankaddr(pa) != 0)
		return (KMap*)KADDR(pa);

	x = splhi();
	va = KMAP + ((uintptr)up->kmapindex << PGSHIFT);
	pte = mmuwalk(m->pml4, va, 0, 1);
	if(pte == 0 || *pte & PTEVALID)
		panic("kmap: pa=%#p va=%#p", pa, va);
	*pte = pa | PTEWRITE|PTEVALID;
 	up->kmapindex = (up->kmapindex + 1) % (1<<PTSHIFT);
	if(up->kmapindex == 0)
		mmuflushtlb();
	splx(x);
	return (KMap*)va;
}
开发者ID:Nurb432,项目名称:plan9front,代码行数:22,代码来源:mmu.c


示例20: mmuwalk

uintptr*
mmuwalk(uintptr* table, uintptr va, int level, int create)
{
	uintptr pte;
	int i, x;

	x = PTLX(va, 3);
	for(i = 2; i >= level; i--){
		pte = table[x];
		if(pte & PTEVALID){
			if(pte & PTESIZE)
				return 0;
			table = KADDR(PPN(pte));
		} else {
			if(!create)
				return 0;
			table = mmucreate(table, va, i, x);
		}
		x = PTLX(va, i);
	}
	return &table[x];
}
开发者ID:Nurb432,项目名称:plan9front,代码行数:22,代码来源:mmu.c



注:本文中的KADDR函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。


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