arch/mips/include/asm/pgtable.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2003 Ralf Baechle
   7  */
   8 #ifndef _ASM_PGTABLE_H
   9 #define _ASM_PGTABLE_H
  10
  11 #include <linux/mm_types.h>
  12 #include <linux/mmzone.h>
  13 #ifdef CONFIG_32BIT
  14 #include <asm/pgtable-32.h>
  15 #endif
  16 #ifdef CONFIG_64BIT
  17 #include <asm/pgtable-64.h>
  18 #endif
  19
  20 #include <asm/io.h>
  21 #include <asm/pgtable-bits.h>
  22
  23 struct mm_struct;
  24 struct vm_area_struct;
  25
  26 #define PAGE_NONE       __pgprot(_PAGE_PRESENT | _CACHE_CACHABLE_NONCOHERENT)
  27 #define PAGE_SHARED     __pgprot(_PAGE_PRESENT | _PAGE_WRITE | (cpu_has_rixi ? 0 : _PAGE_READ) | \
  28                                  _page_cachable_default)
  29 #define PAGE_COPY       __pgprot(_PAGE_PRESENT | (cpu_has_rixi ? 0 : _PAGE_READ) | \
  30                                  (cpu_has_rixi ?  _PAGE_NO_EXEC : 0) | _page_cachable_default)
  31 #define PAGE_READONLY   __pgprot(_PAGE_PRESENT | (cpu_has_rixi ? 0 : _PAGE_READ) | \
  32                                  _page_cachable_default)
  33 #define PAGE_KERNEL     __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \
  34                                  _PAGE_GLOBAL | _page_cachable_default)
  35 #define PAGE_KERNEL_NC  __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \
  36                                  _PAGE_GLOBAL | _CACHE_CACHABLE_NONCOHERENT)
  37 #define PAGE_USERIO     __pgprot(_PAGE_PRESENT | (cpu_has_rixi ? 0 : _PAGE_READ) | _PAGE_WRITE | \
  38                                  _page_cachable_default)
  39 #define PAGE_KERNEL_UNCACHED __pgprot(_PAGE_PRESENT | __READABLE | \
  40                         __WRITEABLE | _PAGE_GLOBAL | _CACHE_UNCACHED)
  41
  42 /*
  43  * If _PAGE_NO_EXEC is not defined, we can't do page protection for
  44  * execute, and consider it to be the same as read. Also, write
  45  * permissions imply read permissions. This is the closest we can get
  46  * by reasonable means..
  47  */
  48
  49 /*
  50  * Dummy values to fill the table in mmap.c
  51  * The real values will be generated at runtime
  52  */
  53 #define __P000 __pgprot(0)
  54 #define __P001 __pgprot(0)
  55 #define __P010 __pgprot(0)
  56 #define __P011 __pgprot(0)
  57 #define __P100 __pgprot(0)
  58 #define __P101 __pgprot(0)
  59 #define __P110 __pgprot(0)
  60 #define __P111 __pgprot(0)
  61
  62 #define __S000 __pgprot(0)
  63 #define __S001 __pgprot(0)
  64 #define __S010 __pgprot(0)
  65 #define __S011 __pgprot(0)
  66 #define __S100 __pgprot(0)
  67 #define __S101 __pgprot(0)
  68 #define __S110 __pgprot(0)
  69 #define __S111 __pgprot(0)
  70
  71 extern unsigned long _page_cachable_default;
  72
  73 /*
  74  * ZERO_PAGE is a global shared page that is always zero; used
  75  * for zero-mapped memory areas etc..
  76  */
  77
  78 extern unsigned long empty_zero_page;
  79 extern unsigned long zero_page_mask;
  80
  81 #define ZERO_PAGE(vaddr) \
  82         (virt_to_page((void *)(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask))))
  83 #define __HAVE_COLOR_ZERO_PAGE
  84
  85 extern void paging_init(void);
  86
  87 /*
  88  * Conversion functions: convert a page and protection to a page entry,
  89  * and a page entry and page directory to the page they refer to.
  90  */
  91 #define pmd_phys(pmd)           virt_to_phys((void *)pmd_val(pmd))
  92
  93 #define __pmd_page(pmd)         (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
  94 #ifndef CONFIG_TRANSPARENT_HUGEPAGE
  95 #define pmd_page(pmd)           __pmd_page(pmd)
  96 #endif /* CONFIG_TRANSPARENT_HUGEPAGE  */
  97
  98 #define pmd_page_vaddr(pmd)     pmd_val(pmd)
  99
 100 #if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32)
 101
 102 #define pte_none(pte)           (!(((pte).pte_low | (pte).pte_high) & ~_PAGE_GLOBAL))
 103 #define pte_present(pte)        ((pte).pte_low & _PAGE_PRESENT)
 104
 105 static inline void set_pte(pte_t *ptep, pte_t pte)
 106 {
 107         ptep->pte_high = pte.pte_high;
 108         smp_wmb();
 109         ptep->pte_low = pte.pte_low;
 110
 111         if (pte.pte_low & _PAGE_GLOBAL) {
 112                 pte_t *buddy = ptep_buddy(ptep);
 113                 /*
 114                  * Make sure the buddy is global too (if it's !none,
 115                  * it better already be global)
 116                  */
 117                 if (pte_none(*buddy)) {
 118                         buddy->pte_low  |= _PAGE_GLOBAL;
 119                         buddy->pte_high |= _PAGE_GLOBAL;
 120                 }
 121         }
 122 }
 123 #define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
 124
 125 static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 126 {
 127         pte_t null = __pte(0);
 128
 129         /* Preserve global status for the pair */
 130         if (ptep_buddy(ptep)->pte_low & _PAGE_GLOBAL)
 131                 null.pte_low = null.pte_high = _PAGE_GLOBAL;
 132
 133         set_pte_at(mm, addr, ptep, null);
 134 }
 135 #else
 136
 137 #define pte_none(pte)           (!(pte_val(pte) & ~_PAGE_GLOBAL))
 138 #define pte_present(pte)        (pte_val(pte) & _PAGE_PRESENT)
 139
 140 /*
 141  * Certain architectures need to do special things when pte's
 142  * within a page table are directly modified.  Thus, the following
 143  * hook is made available.
 144  */
 145 static inline void set_pte(pte_t *ptep, pte_t pteval)
 146 {
 147         *ptep = pteval;
 148 #if !defined(CONFIG_CPU_R3000) && !defined(CONFIG_CPU_TX39XX)
 149         if (pte_val(pteval) & _PAGE_GLOBAL) {
 150                 pte_t *buddy = ptep_buddy(ptep);
 151                 /*
 152                  * Make sure the buddy is global too (if it's !none,
 153                  * it better already be global)
 154                  */
 155                 if (pte_none(*buddy))
 156                         pte_val(*buddy) = pte_val(*buddy) | _PAGE_GLOBAL;
 157         }
 158 #endif
 159 }
 160 #define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
 161
 162 static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 163 {
 164 #if !defined(CONFIG_CPU_R3000) && !defined(CONFIG_CPU_TX39XX)
 165         /* Preserve global status for the pair */
 166         if (pte_val(*ptep_buddy(ptep)) & _PAGE_GLOBAL)
 167                 set_pte_at(mm, addr, ptep, __pte(_PAGE_GLOBAL));
 168         else
 169 #endif
 170                 set_pte_at(mm, addr, ptep, __pte(0));
 171 }
 172 #endif
 173
 174 /*
 175  * (pmds are folded into puds so this doesn't get actually called,
 176  * but the define is needed for a generic inline function.)
 177  */
 178 #define set_pmd(pmdptr, pmdval) do { *(pmdptr) = (pmdval); } while(0)
 179
 180 #ifndef __PAGETABLE_PMD_FOLDED
 181 /*
 182  * (puds are folded into pgds so this doesn't get actually called,
 183  * but the define is needed for a generic inline function.)
 184  */
 185 #define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0)
 186 #endif
 187
 188 #define PGD_T_LOG2      (__builtin_ffs(sizeof(pgd_t)) - 1)
 189 #define PMD_T_LOG2      (__builtin_ffs(sizeof(pmd_t)) - 1)
 190 #define PTE_T_LOG2      (__builtin_ffs(sizeof(pte_t)) - 1)
 191
 192 /*
 193  * We used to declare this array with size but gcc 3.3 and older are not able
 194  * to find that this expression is a constant, so the size is dropped.
 195  */
 196 extern pgd_t swapper_pg_dir[];
 197
 198 /*
 199  * The following only work if pte_present() is true.
 200  * Undefined behaviour if not..
 201  */
 202 #if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32)
 203 static inline int pte_write(pte_t pte)  { return pte.pte_low & _PAGE_WRITE; }
 204 static inline int pte_dirty(pte_t pte)  { return pte.pte_low & _PAGE_MODIFIED; }
 205 static inline int pte_young(pte_t pte)  { return pte.pte_low & _PAGE_ACCESSED; }
 206 static inline int pte_file(pte_t pte)   { return pte.pte_low & _PAGE_FILE; }
 207
 208 static inline pte_t pte_wrprotect(pte_t pte)
 209 {
 210         pte.pte_low  &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE);
 211         pte.pte_high &= ~_PAGE_SILENT_WRITE;
 212         return pte;
 213 }
 214
 215 static inline pte_t pte_mkclean(pte_t pte)
 216 {
 217         pte.pte_low  &= ~(_PAGE_MODIFIED | _PAGE_SILENT_WRITE);
 218         pte.pte_high &= ~_PAGE_SILENT_WRITE;
 219         return pte;
 220 }
 221
 222 static inline pte_t pte_mkold(pte_t pte)
 223 {
 224         pte.pte_low  &= ~(_PAGE_ACCESSED | _PAGE_SILENT_READ);
 225         pte.pte_high &= ~_PAGE_SILENT_READ;
 226         return pte;
 227 }
 228
 229 static inline pte_t pte_mkwrite(pte_t pte)
 230 {
 231         pte.pte_low |= _PAGE_WRITE;
 232         if (pte.pte_low & _PAGE_MODIFIED) {
 233                 pte.pte_low  |= _PAGE_SILENT_WRITE;
 234                 pte.pte_high |= _PAGE_SILENT_WRITE;
 235         }
 236         return pte;
 237 }
 238
 239 static inline pte_t pte_mkdirty(pte_t pte)
 240 {
 241         pte.pte_low |= _PAGE_MODIFIED;
 242         if (pte.pte_low & _PAGE_WRITE) {
 243                 pte.pte_low  |= _PAGE_SILENT_WRITE;
 244                 pte.pte_high |= _PAGE_SILENT_WRITE;
 245         }
 246         return pte;
 247 }
 248
 249 static inline pte_t pte_mkyoung(pte_t pte)
 250 {
 251         pte.pte_low |= _PAGE_ACCESSED;
 252         if (pte.pte_low & _PAGE_READ) {
 253                 pte.pte_low  |= _PAGE_SILENT_READ;
 254                 pte.pte_high |= _PAGE_SILENT_READ;
 255         }
 256         return pte;
 257 }
 258 #else
 259 static inline int pte_write(pte_t pte)  { return pte_val(pte) & _PAGE_WRITE; }
 260 static inline int pte_dirty(pte_t pte)  { return pte_val(pte) & _PAGE_MODIFIED; }
 261 static inline int pte_young(pte_t pte)  { return pte_val(pte) & _PAGE_ACCESSED; }
 262 static inline int pte_file(pte_t pte)   { return pte_val(pte) & _PAGE_FILE; }
 263
 264 static inline pte_t pte_wrprotect(pte_t pte)
 265 {
 266         pte_val(pte) &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE);
 267         return pte;
 268 }
 269
 270 static inline pte_t pte_mkclean(pte_t pte)
 271 {
 272         pte_val(pte) &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE);
 273         return pte;
 274 }
 275
 276 static inline pte_t pte_mkold(pte_t pte)
 277 {
 278         pte_val(pte) &= ~(_PAGE_ACCESSED|_PAGE_SILENT_READ);
 279         return pte;
 280 }
 281
 282 static inline pte_t pte_mkwrite(pte_t pte)
 283 {
 284         pte_val(pte) |= _PAGE_WRITE;
 285         if (pte_val(pte) & _PAGE_MODIFIED)
 286                 pte_val(pte) |= _PAGE_SILENT_WRITE;
 287         return pte;
 288 }
 289
 290 static inline pte_t pte_mkdirty(pte_t pte)
 291 {
 292         pte_val(pte) |= _PAGE_MODIFIED;
 293         if (pte_val(pte) & _PAGE_WRITE)
 294                 pte_val(pte) |= _PAGE_SILENT_WRITE;
 295         return pte;
 296 }
 297
 298 static inline pte_t pte_mkyoung(pte_t pte)
 299 {
 300         pte_val(pte) |= _PAGE_ACCESSED;
 301         if (cpu_has_rixi) {
 302                 if (!(pte_val(pte) & _PAGE_NO_READ))
 303                         pte_val(pte) |= _PAGE_SILENT_READ;
 304         } else {
 305                 if (pte_val(pte) & _PAGE_READ)
 306                         pte_val(pte) |= _PAGE_SILENT_READ;
 307         }
 308         return pte;
 309 }
 310
 311 #ifdef _PAGE_HUGE
 312 static inline int pte_huge(pte_t pte)   { return pte_val(pte) & _PAGE_HUGE; }
 313
 314 static inline pte_t pte_mkhuge(pte_t pte)
 315 {
 316         pte_val(pte) |= _PAGE_HUGE;
 317         return pte;
 318 }
 319 #endif /* _PAGE_HUGE */
 320 #endif
 321 static inline int pte_special(pte_t pte)        { return 0; }
 322 static inline pte_t pte_mkspecial(pte_t pte)    { return pte; }
 323
 324 /*
 325  * Macro to make mark a page protection value as "uncacheable".  Note
 326  * that "protection" is really a misnomer here as the protection value
 327  * contains the memory attribute bits, dirty bits, and various other
 328  * bits as well.
 329  */
 330 #define pgprot_noncached pgprot_noncached
 331
 332 static inline pgprot_t pgprot_noncached(pgprot_t _prot)
 333 {
 334         unsigned long prot = pgprot_val(_prot);
 335
 336         prot = (prot & ~_CACHE_MASK) | _CACHE_UNCACHED;
 337
 338         return __pgprot(prot);
 339 }
 340
 341 /*
 342  * Conversion functions: convert a page and protection to a page entry,
 343  * and a page entry and page directory to the page they refer to.
 344  */
 345 #define mk_pte(page, pgprot)    pfn_pte(page_to_pfn(page), (pgprot))
 346
 347 #if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32)
 348 static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 349 {
 350         pte.pte_low  &= _PAGE_CHG_MASK;
 351         pte.pte_high &= ~0x3f;
 352         pte.pte_low  |= pgprot_val(newprot);
 353         pte.pte_high |= pgprot_val(newprot) & 0x3f;
 354         return pte;
 355 }
 356 #else
 357 static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 358 {
 359         return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot));
 360 }
 361 #endif
 362
 363
 364 extern void __update_tlb(struct vm_area_struct *vma, unsigned long address,
 365         pte_t pte);
 366 extern void __update_cache(struct vm_area_struct *vma, unsigned long address,
 367         pte_t pte);
 368
 369 static inline void update_mmu_cache(struct vm_area_struct *vma,
 370         unsigned long address, pte_t *ptep)
 371 {
 372         pte_t pte = *ptep;
 373         __update_tlb(vma, address, pte);
 374         __update_cache(vma, address, pte);
 375 }
 376
 377 static inline void update_mmu_cache_pmd(struct vm_area_struct *vma,
 378         unsigned long address, pmd_t *pmdp)
 379 {
 380         pte_t pte = *(pte_t *)pmdp;
 381
 382         __update_tlb(vma, address, pte);
 383 }
 384
 385 #define kern_addr_valid(addr)   (1)
 386
 387 #ifdef CONFIG_64BIT_PHYS_ADDR
 388 extern int remap_pfn_range(struct vm_area_struct *vma, unsigned long from, unsigned long pfn, unsigned long size, pgprot_t prot);
 389
 390 static inline int io_remap_pfn_range(struct vm_area_struct *vma,
 391                 unsigned long vaddr,
 392                 unsigned long pfn,
 393                 unsigned long size,
 394                 pgprot_t prot)
 395 {
 396         phys_t phys_addr_high = fixup_bigphys_addr(pfn << PAGE_SHIFT, size);
 397         return remap_pfn_range(vma, vaddr, phys_addr_high >> PAGE_SHIFT, size, prot);
 398 }
 399 #define io_remap_pfn_range io_remap_pfn_range
 400 #endif
 401
 402 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 403
 404 extern int has_transparent_hugepage(void);
 405
 406 static inline int pmd_trans_huge(pmd_t pmd)
 407 {
 408         return !!(pmd_val(pmd) & _PAGE_HUGE);
 409 }
 410
 411 static inline pmd_t pmd_mkhuge(pmd_t pmd)
 412 {
 413         pmd_val(pmd) |= _PAGE_HUGE;
 414
 415         return pmd;
 416 }
 417
 418 static inline int pmd_trans_splitting(pmd_t pmd)
 419 {
 420         return !!(pmd_val(pmd) & _PAGE_SPLITTING);
 421 }
 422
 423 static inline pmd_t pmd_mksplitting(pmd_t pmd)
 424 {
 425         pmd_val(pmd) |= _PAGE_SPLITTING;
 426
 427         return pmd;
 428 }
 429
 430 extern void set_pmd_at(struct mm_struct *mm, unsigned long addr,
 431                        pmd_t *pmdp, pmd_t pmd);
 432
 433 #define __HAVE_ARCH_PMDP_SPLITTING_FLUSH
 434 /* Extern to avoid header file madness */
 435 extern void pmdp_splitting_flush(struct vm_area_struct *vma,
 436                                         unsigned long address,
 437                                         pmd_t *pmdp);
 438
 439 #define __HAVE_ARCH_PMD_WRITE
 440 static inline int pmd_write(pmd_t pmd)
 441 {
 442         return !!(pmd_val(pmd) & _PAGE_WRITE);
 443 }
 444
 445 static inline pmd_t pmd_wrprotect(pmd_t pmd)
 446 {
 447         pmd_val(pmd) &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE);
 448         return pmd;
 449 }
 450
 451 static inline pmd_t pmd_mkwrite(pmd_t pmd)
 452 {
 453         pmd_val(pmd) |= _PAGE_WRITE;
 454         if (pmd_val(pmd) & _PAGE_MODIFIED)
 455                 pmd_val(pmd) |= _PAGE_SILENT_WRITE;
 456
 457         return pmd;
 458 }
 459
 460 static inline int pmd_dirty(pmd_t pmd)
 461 {
 462         return !!(pmd_val(pmd) & _PAGE_MODIFIED);
 463 }
 464
 465 static inline pmd_t pmd_mkclean(pmd_t pmd)
 466 {
 467         pmd_val(pmd) &= ~(_PAGE_MODIFIED | _PAGE_SILENT_WRITE);
 468         return pmd;
 469 }
 470
 471 static inline pmd_t pmd_mkdirty(pmd_t pmd)
 472 {
 473         pmd_val(pmd) |= _PAGE_MODIFIED;
 474         if (pmd_val(pmd) & _PAGE_WRITE)
 475                 pmd_val(pmd) |= _PAGE_SILENT_WRITE;
 476
 477         return pmd;
 478 }
 479
 480 static inline int pmd_young(pmd_t pmd)
 481 {
 482         return !!(pmd_val(pmd) & _PAGE_ACCESSED);
 483 }
 484
 485 static inline pmd_t pmd_mkold(pmd_t pmd)
 486 {
 487         pmd_val(pmd) &= ~(_PAGE_ACCESSED|_PAGE_SILENT_READ);
 488
 489         return pmd;
 490 }
 491
 492 static inline pmd_t pmd_mkyoung(pmd_t pmd)
 493 {
 494         pmd_val(pmd) |= _PAGE_ACCESSED;
 495
 496         if (cpu_has_rixi) {
 497                 if (!(pmd_val(pmd) & _PAGE_NO_READ))
 498                         pmd_val(pmd) |= _PAGE_SILENT_READ;
 499         } else {
 500                 if (pmd_val(pmd) & _PAGE_READ)
 501                         pmd_val(pmd) |= _PAGE_SILENT_READ;
 502         }
 503
 504         return pmd;
 505 }
 506
 507 /* Extern to avoid header file madness */
 508 extern pmd_t mk_pmd(struct page *page, pgprot_t prot);
 509
 510 static inline unsigned long pmd_pfn(pmd_t pmd)
 511 {
 512         return pmd_val(pmd) >> _PFN_SHIFT;
 513 }
 514
 515 static inline struct page *pmd_page(pmd_t pmd)
 516 {
 517         if (pmd_trans_huge(pmd))
 518                 return pfn_to_page(pmd_pfn(pmd));
 519
 520         return pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT);
 521 }
 522
 523 static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
 524 {
 525         pmd_val(pmd) = (pmd_val(pmd) & _PAGE_CHG_MASK) | pgprot_val(newprot);
 526         return pmd;
 527 }
 528
 529 static inline pmd_t pmd_mknotpresent(pmd_t pmd)
 530 {
 531         pmd_val(pmd) &= ~(_PAGE_PRESENT | _PAGE_VALID | _PAGE_DIRTY);
 532
 533         return pmd;
 534 }
 535
 536 /*
 537  * The generic version pmdp_get_and_clear uses a version of pmd_clear() with a
 538  * different prototype.
 539  */
 540 #define __HAVE_ARCH_PMDP_GET_AND_CLEAR
 541 static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm,
 542                                        unsigned long address, pmd_t *pmdp)
 543 {
 544         pmd_t old = *pmdp;
 545
 546         pmd_clear(pmdp);
 547
 548         return old;
 549 }
 550
 551 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 552
 553 #include <asm-generic/pgtable.h>
 554
 555 /*
 556  * uncached accelerated TLB map for video memory access
 557  */
 558 #ifdef CONFIG_CPU_SUPPORTS_UNCACHED_ACCELERATED
 559 #define __HAVE_PHYS_MEM_ACCESS_PROT
 560
 561 struct file;
 562 pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
 563                 unsigned long size, pgprot_t vma_prot);
 564 int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
 565                 unsigned long size, pgprot_t *vma_prot);
 566 #endif
 567
 568 /*
 569  * We provide our own get_unmapped area to cope with the virtual aliasing
 570  * constraints placed on us by the cache architecture.
 571  */
 572 #define HAVE_ARCH_UNMAPPED_AREA
 573 #define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
 574
 575 /*
 576  * No page table caches to initialise
 577  */
 578 #define pgtable_cache_init()    do { } while (0)
 579
 580 #endif /* _ASM_PGTABLE_H */