osfmk/mach/mach_vm.defs

   1 /*
   2  * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * @OSF_FREE_COPYRIGHT@
  30  */
  31 /*
  32  * Mach Operating System
  33  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  34  * All Rights Reserved.
  35  *
  36  * Permission to use, copy, modify and distribute this software and its
  37  * documentation is hereby granted, provided that both the copyright
  38  * notice and this permission notice appear in all copies of the
  39  * software, derivative works or modified versions, and any portions
  40  * thereof, and that both notices appear in supporting documentation.
  41  *
  42  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  43  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  44  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  45  *
  46  * Carnegie Mellon requests users of this software to return to
  47  *
  48  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  49  *  School of Computer Science
  50  *  Carnegie Mellon University
  51  *  Pittsburgh PA 15213-3890
  52  *
  53  * any improvements or extensions that they make and grant Carnegie Mellon
  54  * the rights to redistribute these changes.
  55  */
  56 /*
  57  */
  58 /*
  59  *      File:   mach/mach_vm.defs
  60  *
  61  *      Exported kernel VM calls (for any task on the platform).
  62  */
  63
  64 subsystem
  65 #if     KERNEL_SERVER
  66           KernelServer
  67 #endif  /* KERNEL_SERVER */
  68 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
  69           mach_vm
  70 #else
  71           vm_map_lp64_local
  72 #endif
  73           4800;
  74
  75 #include <mach/std_types.defs>
  76 #include <mach/mach_types.defs>
  77 #include <mach_debug/mach_debug_types.defs>
  78
  79 #if !KERNEL && !LIBSYSCALL_INTERFACE
  80 #define PREFIX(NAME) _kernelrpc_ ## NAME
  81 #else
  82 #define PREFIX(NAME) NAME
  83 #endif
  84
  85 /*
  86  *      Allocate zero-filled memory in the address space
  87  *      of the target task, either at the specified address,
  88  *      or wherever space can be found (controlled by flags),
  89  *      of the specified size.  The address at which the
  90  *      allocation actually took place is returned.
  91  */
  92 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
  93 routine PREFIX(mach_vm_allocate) (
  94                 target          : vm_task_entry_t;
  95         inout   address         : mach_vm_address_t;
  96                 size            : mach_vm_size_t;
  97                 flags           : int);
  98
  99 #else
 100
 101 #if !KERNEL && !LIBSYSCALL_INTERFACE
 102 skip;
 103 #else
 104 routine PREFIX(vm_allocate) (
 105                 target          : vm_task_entry_t;
 106         inout   address         : mach_vm_address_t;
 107                 size            : mach_vm_size_t;
 108                 flags           : int);
 109
 110 #endif
 111
 112 #endif
 113
 114
 115 /*
 116  *      Deallocate the specified range from the virtual
 117  *      address space of the target virtual memory map.
 118  */
 119 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 120 routine PREFIX(mach_vm_deallocate) (
 121                 target          : vm_task_entry_t;
 122                 address         : mach_vm_address_t;
 123                 size            : mach_vm_size_t);
 124
 125 #else
 126
 127 #if !KERNEL && !LIBSYSCALL_INTERFACE
 128 skip;
 129 #else
 130 routine PREFIX(vm_deallocate) (
 131                 target          : vm_task_entry_t;
 132                 address         : mach_vm_address_t;
 133                 size            : mach_vm_size_t);
 134 #endif
 135
 136 #endif
 137
 138 /*
 139  *      Set the current or maximum protection attribute
 140  *      for the specified range of the virtual address
 141  *      space of the target virtual memory map.  The current
 142  *      protection limits the memory access rights of threads
 143  *      within the map; the maximum protection limits the accesses
 144  *      that may be given in the current protection.
 145  *      Protections are specified as a set of {read, write, execute}
 146  *      *permissions*.
 147  */
 148 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 149 routine PREFIX(mach_vm_protect) (
 150                 target_task     : vm_task_entry_t;
 151                 address         : mach_vm_address_t;
 152                 size            : mach_vm_size_t;
 153                 set_maximum     : boolean_t;
 154                 new_protection  : vm_prot_t);
 155
 156
 157 #else
 158
 159 #if !KERNEL && !LIBSYSCALL_INTERFACE
 160 skip;
 161 #else
 162
 163 routine PREFIX(vm_protect) (
 164                 target_task     : vm_task_entry_t;
 165                 address         : mach_vm_address_t;
 166                 size            : mach_vm_size_t;
 167                 set_maximum     : boolean_t;
 168                 new_protection  : vm_prot_t);
 169
 170 #endif
 171
 172 #endif
 173
 174 /*
 175  *      Set the inheritance attribute for the specified range
 176  *      of the virtual address space of the target address space.
 177  *      The inheritance value is one of {none, copy, share}, and
 178  *      specifies how the child address space should acquire
 179  *      this memory at the time of a task_create call.
 180  */
 181 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 182 routine mach_vm_inherit(
 183 #else
 184 routine vm_inherit(
 185 #endif
 186                 target_task     : vm_task_entry_t;
 187                 address         : mach_vm_address_t;
 188                 size            : mach_vm_size_t;
 189                 new_inheritance : vm_inherit_t);
 190
 191 /*
 192  *      Returns the contents of the specified range of the
 193  *      virtual address space of the target task.  [The
 194  *      range must be aligned on a virtual page boundary,
 195  *      and must be a multiple of pages in extent.  The
 196  *      protection on the specified range must permit reading.]
 197  */
 198 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 199 routine PREFIX(mach_vm_read) (
 200 #else
 201 routine PREFIX(vm_read) (
 202 #endif
 203                 target_task     : vm_map_t;
 204                 address         : mach_vm_address_t;
 205                 size            : mach_vm_size_t;
 206         out     data            : pointer_t);
 207
 208 /*
 209  * List corrollary to vm_read, returns mapped contents of specified
 210  * ranges within target address space.
 211  */
 212 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 213 routine mach_vm_read_list(
 214 #else
 215 routine vm_read_list(
 216 #endif
 217                 target_task     : vm_map_t;
 218         inout   data_list       : mach_vm_read_entry_t;
 219                 count           : natural_t);
 220
 221 /*
 222  *      Writes the contents of the specified range of the
 223  *      virtual address space of the target task.  [The
 224  *      range must be aligned on a virtual page boundary,
 225  *      and must be a multiple of pages in extent.  The
 226  *      protection on the specified range must permit writing.]
 227  */
 228 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 229 routine mach_vm_write(
 230 #else
 231 routine vm_write(
 232 #endif
 233                 target_task     : vm_map_t;
 234                 address         : mach_vm_address_t;
 235                 data            : pointer_t);
 236
 237 /*
 238  *      Copy the contents of the source range of the virtual
 239  *      address space of the target task to the destination
 240  *      range in that same address space.  [Both of the
 241  *      ranges must be aligned on a virtual page boundary,
 242  *      and must be multiples of pages in extent.  The
 243  *      protection on the source range must permit reading,
 244  *      and the protection on the destination range must
 245  *      permit writing.]
 246  */
 247 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 248 routine mach_vm_copy(
 249 #else
 250 routine vm_copy(
 251 #endif
 252                 target_task     : vm_map_t;
 253                 source_address  : mach_vm_address_t;
 254                 size            : mach_vm_size_t;
 255                 dest_address    : mach_vm_address_t);
 256
 257 /*
 258  *      Returns the contents of the specified range of the
 259  *      virtual address space of the target task.  [There
 260  *      are no alignment restrictions, and the results will
 261  *      overwrite the area pointed to by data - which must
 262  *      already exist. The protection on the specified range
 263  *      must permit reading.]
 264  */
 265 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 266 routine mach_vm_read_overwrite(
 267 #else
 268 routine vm_read_overwrite(
 269 #endif
 270                 target_task     : vm_map_t;
 271                 address         : mach_vm_address_t;
 272                 size            : mach_vm_size_t;
 273                 data            : mach_vm_address_t;
 274         out     outsize         : mach_vm_size_t);
 275
 276
 277 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 278 routine mach_vm_msync(
 279 #else
 280 routine vm_msync(
 281 #endif
 282                 target_task     : vm_map_t;
 283                 address         : mach_vm_address_t;
 284                 size            : mach_vm_size_t;
 285                 sync_flags      : vm_sync_t );
 286
 287 /*
 288  *      Set the paging behavior attribute for the specified range
 289  *      of the virtual address space of the target task.
 290  *      The behavior value is one of {default, random, forward
 291  *      sequential, reverse sequential} and indicates the expected
 292  *      page reference pattern for the specified range.
 293  */
 294 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 295 routine mach_vm_behavior_set(
 296 #else
 297 routine vm_behavior_set(
 298 #endif
 299                 target_task     : vm_map_t;
 300                 address         : mach_vm_address_t;
 301                 size            : mach_vm_size_t;
 302                 new_behavior    : vm_behavior_t);
 303
 304
 305 /*
 306  *      Map a user-supplie memory object into the virtual address
 307  *      space of the target task.  If desired (anywhere is TRUE),
 308  *      the kernel will find a suitable address range of the
 309  *      specified size; else, the specific address will be allocated.
 310  *
 311  *      The beginning address of the range will be aligned on a virtual
 312  *      page boundary, be at or beyond the address specified, and
 313  *      meet the mask requirements (bits turned on in the mask must not
 314  *      be turned on in the result); the size of the range, in bytes,
 315  *      will be rounded up to an integral number of virtual pages.
 316  *
 317  *      The memory in the resulting range will be associated with the
 318  *      specified memory object, with the beginning of the memory range
 319  *      referring to the specified offset into the memory object.
 320  *
 321  *      The mapping will take the current and maximum protections and
 322  *      the inheritance attributes specified; see the vm_protect and
 323  *      vm_inherit calls for a description of these attributes.
 324  *
 325  *      If desired (copy is TRUE), the memory range will be filled
 326  *      with a copy of the data from the memory object; this copy will
 327  *      be private to this mapping in this target task.  Otherwise,
 328  *      the memory in this mapping will be shared with other mappings
 329  *      of the same memory object at the same offset (in this task or
 330  *      in other tasks).  [The Mach kernel only enforces shared memory
 331  *      consistency among mappings on one host with similar page alignments.
 332  *      The user-defined memory manager for this object is responsible
 333  *      for further consistency.]
 334  */
 335 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 336 routine PREFIX(mach_vm_map) (
 337 #else
 338 #if defined(__arm__) && !LIBSYSCALL_INTERFACE
 339 routine _vm_map_arm(
 340 #else
 341 routine PREFIX(vm_map) (
 342 #endif
 343 #endif
 344                 target_task     : vm_task_entry_t;
 345         inout   address         : mach_vm_address_t;
 346                 size            : mach_vm_size_t;
 347                 mask            : mach_vm_offset_t;
 348                 flags           : int;
 349                 object          : mem_entry_name_port_t;
 350                 offset          : memory_object_offset_t;
 351                 copy            : boolean_t;
 352                 cur_protection  : vm_prot_t;
 353                 max_protection  : vm_prot_t;
 354                 inheritance     : vm_inherit_t);
 355
 356 /*
 357  *      Set/Get special properties of memory associated
 358  *      to some virtual address range, such as cachability,
 359  *      migrability, replicability.  Machine-dependent.
 360  */
 361 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 362 routine mach_vm_machine_attribute(
 363 #else
 364 routine vm_machine_attribute(
 365 #endif
 366                 target_task     : vm_map_t;
 367                 address         : mach_vm_address_t;
 368                 size            : mach_vm_size_t;
 369                 attribute       : vm_machine_attribute_t;
 370         inout   value           : vm_machine_attribute_val_t);
 371
 372 /*
 373  *      Map portion of a task's address space.
 374  */
 375 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 376 routine PREFIX(mach_vm_remap) (
 377 #else
 378 routine PREFIX(vm_remap) (
 379 #endif
 380                 target_task     : vm_map_t;
 381         inout   target_address  : mach_vm_address_t;
 382                 size            : mach_vm_size_t;
 383                 mask            : mach_vm_offset_t;
 384                 flags           : int;
 385                 src_task        : vm_map_t;
 386                 src_address     : mach_vm_address_t;
 387                 copy            : boolean_t;
 388         out     cur_protection  : vm_prot_t;
 389         out     max_protection  : vm_prot_t;
 390                 inheritance     : vm_inherit_t);
 391
 392 /*
 393  *      Give the caller information on the given location in a virtual
 394  *      address space.  If a page is mapped return ref and dirty info.
 395  */
 396 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 397 routine mach_vm_page_query(
 398 #else
 399 routine vm_map_page_query(
 400 #endif
 401                 target_map      :vm_map_t;
 402                 offset          :mach_vm_offset_t;
 403         out     disposition     :integer_t;
 404         out     ref_count       :integer_t);
 405
 406
 407 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 408 routine mach_vm_region_recurse(
 409 #else
 410 routine vm_region_recurse_64(
 411 #endif
 412                 target_task     : vm_map_t;
 413         inout   address         : mach_vm_address_t;
 414         out     size            : mach_vm_size_t;
 415         inout   nesting_depth   : natural_t;
 416         out     info            : vm_region_recurse_info_t,CountInOut);
 417
 418 /*
 419  *      Returns information about the contents of the virtual
 420  *      address space of the target task at the specified
 421  *      address.  The returned protection, inheritance, sharing
 422  *      and memory object values apply to the entire range described
 423  *      by the address range returned; the memory object offset
 424  *      corresponds to the beginning of the address range.
 425  *      [If the specified address is not allocated, the next
 426  *      highest address range is described.  If no addresses beyond
 427  *      the one specified are allocated, the call returns KERN_NO_SPACE.]
 428  */
 429 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 430 routine mach_vm_region(
 431 #else
 432 routine vm_region_64(
 433 #endif
 434                 target_task     : vm_map_t;
 435         inout   address         : mach_vm_address_t;
 436         out     size            : mach_vm_size_t;
 437                 flavor          : vm_region_flavor_t;
 438         out     info            : vm_region_info_t, CountInOut;
 439         out     object_name     : memory_object_name_t =
 440                                         MACH_MSG_TYPE_MOVE_SEND
 441                                         ctype: mach_port_t);
 442
 443 /*
 444  *      Allow application level processes to create named entries which
 445  *      correspond to mapped portions of their address space.  These named
 446  *      entries can then be manipulated, shared with other processes in
 447  *      other address spaces and ultimately mapped in ohter address spaces
 448  *
 449  *      THIS INTERFACE IS STILL EVOLVING.
 450  */
 451 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 452 #if !defined(__LP64__) || KERNEL_SERVER || XNU_KERNEL_PRIVATE || LIBSYSCALL_INTERFACE
 453 routine _mach_make_memory_entry(
 454 #else
 455 routine mach_make_memory_entry(
 456 #endif
 457 #else
 458 routine mach_make_memory_entry_64(
 459 #endif
 460                 target_task     :vm_map_t;
 461         inout   size            :memory_object_size_t;
 462                 offset          :memory_object_offset_t;
 463                 permission      :vm_prot_t;
 464         out     object_handle   :mem_entry_name_port_move_send_t;
 465                 parent_handle   :mem_entry_name_port_t);
 466
 467 /*
 468  *      Control behavior and investigate state of a "purgable" object in
 469  *      the virtual address space of the target task.  A purgable object is
 470  *      created via a call to mach_vm_allocate() with VM_FLAGS_PURGABLE
 471  *      specified.  See the routine implementation for a complete
 472  *      definition of the routine.
 473  */
 474 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 475 routine PREFIX(mach_vm_purgable_control) (
 476 #else
 477 routine PREFIX(vm_purgable_control) (
 478 #endif
 479                 target_task     : vm_map_t;
 480                 address         : mach_vm_address_t;
 481                 control         : vm_purgable_t;
 482         inout   state           : int);
 483
 484
 485 #if !defined(_MACH_VM_PUBLISH_AS_LOCAL_)
 486 routine mach_vm_page_info(
 487                         target_task             : vm_map_t;
 488                         address                 : mach_vm_address_t;
 489                         flavor                  : vm_page_info_flavor_t;
 490         out             info                    : vm_page_info_t, CountInOut);
 491 #else
 492 skip;
 493 #endif
 494
 495 /****************************** Legacy section ***************************/
 496 /*  The following definitions are exist to provide compatibility with    */
 497 /*  the legacy APIs.  They are no different.  We just need to produce    */
 498 /*  the user-level stub interface for them.                              */
 499 /****************************** Legacy section ***************************/
 500
 501
 502 /*
 503  * These interfaces just aren't supported in the new (wide) model:
 504  *
 505  *      mach_vm_region_info() -
 506  *      vm_map_pages_info() -
 507  *              no user-level replacement for these MACH_DEBUG interfaces
 508  *      vm_map_get_upl() -
 509  *              no user-level replacement at the moment
 510  *      vm_region_info() -
 511  *              use mach_vm_region_info() or vm_region_info_64()
 512  *      vm_region_recurse() -
 513  *              use mach_vm_region_recurse() or vm_region_recurse_64()
 514  */
 515
 516 /*
 517  * The following legacy interfaces are provides as macro wrappers to the new
 518  * interfaces.  You should strive to use the new ones instead:
 519  *
 520  *      vm_map() -
 521  *              use mach_vm_map() or vm_map_64()
 522  *      vm_region() -
 523  *              use mach_vm_region() or vm_region_64()
 524  *      mach_make_memory_entry() -
 525  *              use mach_vm_make_memory_entry() or mach_make_memory_entry_64()
 526  */
 527
 528 /* vim: set ft=c : */