/*
- * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2009 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
extern kern_return_t vm_map_exec(
vm_map_t new_map,
task_t task,
+ boolean_t is64bit,
void *fsroot,
cpu_type_t cpu);
#include <vm/vm_object.h>
#include <vm/vm_page.h>
-#include <kern/lock.h>
+#include <kern/locks.h>
#include <kern/zalloc.h>
#include <kern/macro_help.h>
#define current_map_fast() (current_thread()->map)
#define current_map() (current_map_fast())
+#include <vm/vm_map_store.h>
+
+
/*
* Types defined:
*
* memory object or a sub map (of the kernel map).
*/
typedef union vm_map_object {
- vm_object_t vm_object; /* object object */
- vm_map_t sub_map; /* belongs to another map */
+ vm_object_t vmo_object; /* object object */
+ vm_map_t vmo_submap; /* belongs to another map */
} vm_map_object_t;
#define named_entry_lock_init(object) lck_mtx_init(&(object)->Lock, &vm_object_lck_grp, &vm_object_lck_attr)
+#define named_entry_lock_destroy(object) lck_mtx_destroy(&(object)->Lock, &vm_object_lck_grp)
#define named_entry_lock(object) lck_mtx_lock(&(object)->Lock)
#define named_entry_unlock(object) lck_mtx_unlock(&(object)->Lock)
decl_lck_mtx_data(, Lock) /* Synchronization */
union {
vm_object_t object; /* object I point to */
- memory_object_t pager; /* amo pager port */
vm_map_t map; /* map backing submap */
+ vm_map_copy_t copy; /* a VM map copy */
} backing;
vm_object_offset_t offset; /* offset into object */
vm_object_size_t size; /* size of region */
+ vm_object_offset_t data_offset; /* offset to first byte of data */
vm_prot_t protection; /* access permissions */
int ref_count; /* Number of references */
unsigned int /* Is backing.xxx : */
/* boolean_t */ internal:1, /* ... an internal object */
/* boolean_t */ is_sub_map:1, /* ... a submap? */
- /* boolean_t */ is_pager:1; /* ... a pager port */
+ /* boolean_t */ is_copy:1; /* ... a VM map copy */
};
/*
* Control information for virtual copy operations is also
* stored in the address map entry.
*/
+
struct vm_map_links {
struct vm_map_entry *prev; /* previous entry */
struct vm_map_entry *next; /* next entry */
vm_map_offset_t end; /* end address */
};
+/*
+ * IMPORTANT:
+ * The "alias" field can be updated while holding the VM map lock
+ * "shared". It's OK as along as it's the only field that can be
+ * updated without the VM map "exclusive" lock.
+ */
+#define VME_OBJECT(entry) ((entry)->vme_object.vmo_object)
+#define VME_OBJECT_SET(entry, object) \
+ MACRO_BEGIN \
+ (entry)->vme_object.vmo_object = (object); \
+ MACRO_END
+#define VME_SUBMAP(entry) ((entry)->vme_object.vmo_submap)
+#define VME_SUBMAP_SET(entry, submap) \
+ MACRO_BEGIN \
+ (entry)->vme_object.vmo_submap = (submap); \
+ MACRO_END
+#define VME_OFFSET(entry) ((entry)->vme_offset & ~PAGE_MASK)
+#define VME_OFFSET_SET(entry, offset) \
+ MACRO_BEGIN \
+ int __alias; \
+ __alias = VME_ALIAS((entry)); \
+ assert((offset & PAGE_MASK) == 0); \
+ (entry)->vme_offset = offset | __alias; \
+ MACRO_END
+#define VME_OBJECT_SHADOW(entry, length) \
+ MACRO_BEGIN \
+ vm_object_t __object; \
+ vm_object_offset_t __offset; \
+ __object = VME_OBJECT((entry)); \
+ __offset = VME_OFFSET((entry)); \
+ vm_object_shadow(&__object, &__offset, (length)); \
+ if (__object != VME_OBJECT((entry))) { \
+ VME_OBJECT_SET((entry), __object); \
+ (entry)->use_pmap = TRUE; \
+ } \
+ if (__offset != VME_OFFSET((entry))) { \
+ VME_OFFSET_SET((entry), __offset); \
+ } \
+ MACRO_END
+
+#define VME_ALIAS_MASK (PAGE_MASK)
+#define VME_ALIAS(entry) ((unsigned int)((entry)->vme_offset & VME_ALIAS_MASK))
+#define VME_ALIAS_SET(entry, alias) \
+ MACRO_BEGIN \
+ vm_map_offset_t __offset; \
+ __offset = VME_OFFSET((entry)); \
+ (entry)->vme_offset = __offset | ((alias) & VME_ALIAS_MASK); \
+ MACRO_END
+
+/*
+ * FOOTPRINT ACCOUNTING:
+ * The "memory footprint" is better described in the pmap layer.
+ *
+ * At the VM level, these 2 vm_map_entry_t fields are relevant:
+ * iokit_mapped:
+ * For an "iokit_mapped" entry, we add the size of the entry to the
+ * footprint when the entry is entered into the map and we subtract that
+ * size when the entry is removed. No other accounting should take place.
+ * "use_pmap" should be FALSE but is not taken into account.
+ * use_pmap: (only when is_sub_map is FALSE)
+ * This indicates if we should ask the pmap layer to account for pages
+ * in this mapping. If FALSE, we expect that another form of accounting
+ * is being used (e.g. "iokit_mapped" or the explicit accounting of
+ * non-volatile purgable memory).
+ *
+ * So the logic is mostly:
+ * if entry->is_sub_map == TRUE
+ * anything in a submap does not count for the footprint
+ * else if entry->iokit_mapped == TRUE
+ * footprint includes the entire virtual size of this entry
+ * else if entry->use_pmap == FALSE
+ * tell pmap NOT to account for pages being pmap_enter()'d from this
+ * mapping (i.e. use "alternate accounting")
+ * else
+ * pmap will account for pages being pmap_enter()'d from this mapping
+ * as it sees fit (only if anonymous, etc...)
+ */
+
struct vm_map_entry {
struct vm_map_links links; /* links to other entries */
#define vme_prev links.prev
#define vme_next links.next
#define vme_start links.start
#define vme_end links.end
- union vm_map_object object; /* object I point to */
- vm_object_offset_t offset; /* offset into object */
+
+ struct vm_map_store store;
+ union vm_map_object vme_object; /* object I point to */
+ vm_object_offset_t vme_offset; /* offset into object */
+
unsigned int
- /* boolean_t */ is_shared:1, /* region is shared */
- /* boolean_t */ is_sub_map:1, /* Is "object" a submap? */
- /* boolean_t */ in_transition:1, /* Entry being changed */
- /* boolean_t */ needs_wakeup:1, /* Waiters on in_transition */
- /* vm_behavior_t */ behavior:2, /* user paging behavior hint */
+ /* boolean_t */ is_shared:1, /* region is shared */
+ /* boolean_t */ is_sub_map:1, /* Is "object" a submap? */
+ /* boolean_t */ in_transition:1, /* Entry being changed */
+ /* boolean_t */ needs_wakeup:1, /* Waiters on in_transition */
+ /* vm_behavior_t */ behavior:2, /* user paging behavior hint */
/* behavior is not defined for submap type */
- /* boolean_t */ needs_copy:1, /* object need to be copied? */
+ /* boolean_t */ needs_copy:1, /* object need to be copied? */
+
/* Only in task maps: */
- /* vm_prot_t */ protection:3, /* protection code */
- /* vm_prot_t */ max_protection:3,/* maximum protection */
- /* vm_inherit_t */ inheritance:2, /* inheritance */
- /* boolean_t */ use_pmap:1, /* nested pmaps */
- /*
- * IMPORTANT:
- * The "alias" field can be updated while holding the VM map lock
- * "shared". It's OK as along as it's the only field that can be
- * updated without the VM map "exclusive" lock.
- */
- /* unsigned char */ alias:8, /* user alias */
- /* boolean_t */ no_cache:1, /* should new pages be cached? */
- /* boolean_t */ permanent:1, /* mapping can not be removed */
- /* boolean_t */ superpage_size:3,/* use superpages of a certain size */
- /* boolean_t */ zero_wired_pages:1, /* zero out the wired pages of this entry it is being deleted without unwiring them */
- /* unsigned char */ pad:2; /* available bits */
+ /* vm_prot_t */ protection:3, /* protection code */
+ /* vm_prot_t */ max_protection:3, /* maximum protection */
+ /* vm_inherit_t */ inheritance:2, /* inheritance */
+ /* boolean_t */ use_pmap:1, /*
+ * use_pmap is overloaded:
+ * if "is_sub_map":
+ * use a nested pmap?
+ * else (i.e. if object):
+ * use pmap accounting
+ * for footprint?
+ */
+ /* boolean_t */ no_cache:1, /* should new pages be cached? */
+ /* boolean_t */ permanent:1, /* mapping can not be removed */
+ /* boolean_t */ superpage_size:1, /* use superpages of a certain size */
+ /* boolean_t */ map_aligned:1, /* align to map's page size */
+ /* boolean_t */ zero_wired_pages:1, /* zero out the wired pages of
+ * this entry it is being deleted
+ * without unwiring them */
+ /* boolean_t */ used_for_jit:1,
+ /* boolean_t */ from_reserved_zone:1, /* Allocated from
+ * kernel reserved zone */
+
+ /* iokit accounting: use the virtual size rather than resident size: */
+ /* boolean_t */ iokit_acct:1,
+ /* boolean_t */ vme_resilient_codesign:1,
+ /* boolean_t */ vme_resilient_media:1,
+ /* boolean_t */ vme_atomic:1, /* entry cannot be split/coalesced */
+ __unused:5;
+;
+
unsigned short wired_count; /* can be paged if = 0 */
unsigned short user_wired_count; /* for vm_wire */
+#if DEBUG
+#define MAP_ENTRY_CREATION_DEBUG (1)
+#define MAP_ENTRY_INSERTION_DEBUG (1)
+#endif
+#if MAP_ENTRY_CREATION_DEBUG
+ struct vm_map_header *vme_creation_maphdr;
+ uintptr_t vme_creation_bt[16];
+#endif
+#if MAP_ENTRY_INSERTION_DEBUG
+ uintptr_t vme_insertion_bt[16];
+#endif
};
/*
* Description:
* Header for a vm_map and a vm_map_copy.
*/
+
+
struct vm_map_header {
struct vm_map_links links; /* first, last, min, max */
int nentries; /* Number of entries */
boolean_t entries_pageable;
/* are map entries pageable? */
+#ifdef VM_MAP_STORE_USE_RB
+ struct rb_head rb_head_store;
+#endif
+ int page_shift; /* page shift */
};
+#define VM_MAP_HDR_PAGE_SHIFT(hdr) ((hdr)->page_shift)
+#define VM_MAP_HDR_PAGE_SIZE(hdr) (1 << VM_MAP_HDR_PAGE_SHIFT((hdr)))
+#define VM_MAP_HDR_PAGE_MASK(hdr) (VM_MAP_HDR_PAGE_SIZE((hdr)) - 1)
+
/*
* Type: vm_map_t [exported; contents invisible]
*
* quickly find free space.
*/
struct _vm_map {
- lock_t lock; /* uni- and smp-lock */
+ lck_rw_t lock; /* map lock */
struct vm_map_header hdr; /* Map entry header */
#define min_offset hdr.links.start /* start of range */
#define max_offset hdr.links.end /* end of range */
vm_map_size_t size; /* virtual size */
vm_map_size_t user_wire_limit;/* rlimit on user locked memory */
vm_map_size_t user_wire_size; /* current size of user locked memory in this map */
+#if __x86_64__
+ vm_map_offset_t vmmap_high_start;
+#endif /* __x86_64__ */
+
+ union {
+ /*
+ * If map->disable_vmentry_reuse == TRUE:
+ * the end address of the highest allocated vm_map_entry_t.
+ */
+ vm_map_offset_t vmu1_highest_entry_end;
+ /*
+ * For a nested VM map:
+ * the lowest address in this nested VM map that we would
+ * expect to be unnested under normal operation (i.e. for
+ * regular copy-on-write on DATA section).
+ */
+ vm_map_offset_t vmu1_lowest_unnestable_start;
+ } vmu1;
+#define highest_entry_end vmu1.vmu1_highest_entry_end
+#define lowest_unnestable_start vmu1.vmu1_lowest_unnestable_start
+
int ref_count; /* Reference count */
#if TASK_SWAPPER
int res_count; /* Residence count (swap) */
decl_lck_mtx_data(, s_lock) /* Lock ref, res fields */
lck_mtx_ext_t s_lock_ext;
vm_map_entry_t hint; /* hint for quick lookups */
- vm_map_entry_t first_free; /* First free space hint */
- boolean_t wait_for_space; /* Should callers wait
- for space? */
- boolean_t wiring_required;/* All memory wired? */
- boolean_t no_zero_fill; /* No zero fill absent pages */
- boolean_t mapped; /* has this map been mapped */
- boolean_t switch_protect; /* Protect map from write faults while switched */
+ struct vm_map_links* hole_hint; /* hint for quick hole lookups */
+ union{
+ vm_map_entry_t _first_free; /* First free space hint */
+ struct vm_map_links* _holes; /* links all holes between entries */
+ }f_s; /* Union for free space data structures being used */
+
+#define first_free f_s._first_free
+#define holes_list f_s._holes
+
+ unsigned int
+ /* boolean_t */ wait_for_space:1, /* Should callers wait for space? */
+ /* boolean_t */ wiring_required:1, /* All memory wired? */
+ /* boolean_t */ no_zero_fill:1, /*No zero fill absent pages */
+ /* boolean_t */ mapped_in_other_pmaps:1, /*has this submap been mapped in maps that use a different pmap */
+ /* boolean_t */ switch_protect:1, /* Protect map from write faults while switched */
+ /* boolean_t */ disable_vmentry_reuse:1, /* All vm entries should keep using newer and higher addresses in the map */
+ /* boolean_t */ map_disallow_data_exec:1, /* Disallow execution from data pages on exec-permissive architectures */
+ /* boolean_t */ holelistenabled:1,
+ /* boolean_t */ is_nested_map:1,
+ /* boolean_t */ map_disallow_new_exec:1, /* Disallow new executable code */
+ /* reserved */ pad:22;
unsigned int timestamp; /* Version number */
unsigned int color_rr; /* next color (not protected by a lock) */
+
+ boolean_t jit_entry_exists;
} ;
#define vm_map_to_entry(map) ((struct vm_map_entry *) &(map)->hdr.links)
*
* The third format is a kernel buffer copy object - for data
* small enough that physical copies were the most efficient
- * method.
+ * method. This method uses a zero-sized array unioned with
+ * other format-specific data in the 'c_u' member. This unsized
+ * array overlaps the other elements and allows us to use this
+ * extra structure space for physical memory copies. On 64-bit
+ * systems this saves ~64 bytes per vm_map_copy.
*/
struct vm_map_copy {
vm_object_offset_t offset;
vm_map_size_t size;
union {
- struct vm_map_header hdr; /* ENTRY_LIST */
- vm_object_t object; /* OBJECT */
- struct {
- void *kdata; /* KERNEL_BUFFER */
- vm_size_t kalloc_size; /* size of this copy_t */
- } c_k;
+ struct vm_map_header hdr; /* ENTRY_LIST */
+ vm_object_t object; /* OBJECT */
+ uint8_t kdata[0]; /* KERNEL_BUFFER */
} c_u;
};
#define cpy_hdr c_u.hdr
#define cpy_object c_u.object
+#define cpy_kdata c_u.kdata
+#define cpy_kdata_hdr_sz (offsetof(struct vm_map_copy, c_u.kdata))
-#define cpy_kdata c_u.c_k.kdata
-#define cpy_kalloc_size c_u.c_k.kalloc_size
-
+#define VM_MAP_COPY_PAGE_SHIFT(copy) ((copy)->cpy_hdr.page_shift)
+#define VM_MAP_COPY_PAGE_SIZE(copy) (1 << VM_MAP_COPY_PAGE_SHIFT((copy)))
+#define VM_MAP_COPY_PAGE_MASK(copy) (VM_MAP_COPY_PAGE_SIZE((copy)) - 1)
/*
* Useful macros for entry list copy objects
#define vm_map_lock_init(map) \
((map)->timestamp = 0 , \
- lock_init(&(map)->lock, TRUE, 0, 0))
+ lck_rw_init(&(map)->lock, &vm_map_lck_grp, &vm_map_lck_rw_attr))
-#define vm_map_lock(map) lock_write(&(map)->lock)
+#define vm_map_lock(map) lck_rw_lock_exclusive(&(map)->lock)
#define vm_map_unlock(map) \
- ((map)->timestamp++ , lock_write_done(&(map)->lock))
-#define vm_map_lock_read(map) lock_read(&(map)->lock)
-#define vm_map_unlock_read(map) lock_read_done(&(map)->lock)
+ ((map)->timestamp++ , lck_rw_done(&(map)->lock))
+#define vm_map_lock_read(map) lck_rw_lock_shared(&(map)->lock)
+#define vm_map_unlock_read(map) lck_rw_done(&(map)->lock)
#define vm_map_lock_write_to_read(map) \
- ((map)->timestamp++ , lock_write_to_read(&(map)->lock))
+ ((map)->timestamp++ , lck_rw_lock_exclusive_to_shared(&(map)->lock))
/* lock_read_to_write() returns FALSE on failure. Macro evaluates to
* zero on success and non-zero value on failure.
*/
-#define vm_map_lock_read_to_write(map) (lock_read_to_write(&(map)->lock) != TRUE)
+#define vm_map_lock_read_to_write(map) (lck_rw_lock_shared_to_exclusive(&(map)->lock) != TRUE)
+
+#define vm_map_try_lock(map) lck_rw_try_lock_exclusive(&(map)->lock)
+#define vm_map_try_lock_read(map) lck_rw_try_lock_shared(&(map)->lock)
+
+#if MACH_ASSERT || DEBUG
+#define vm_map_lock_assert_held(map) \
+ lck_rw_assert(&(map)->lock, LCK_RW_ASSERT_HELD)
+#define vm_map_lock_assert_shared(map) \
+ lck_rw_assert(&(map)->lock, LCK_RW_ASSERT_SHARED)
+#define vm_map_lock_assert_exclusive(map) \
+ lck_rw_assert(&(map)->lock, LCK_RW_ASSERT_EXCLUSIVE)
+#define vm_map_lock_assert_notheld(map) \
+ lck_rw_assert(&(map)->lock, LCK_RW_ASSERT_NOTHELD)
+#else /* MACH_ASSERT || DEBUG */
+#define vm_map_lock_assert_held(map)
+#define vm_map_lock_assert_shared(map)
+#define vm_map_lock_assert_exclusive(map)
+#define vm_map_lock_assert_notheld(map)
+#endif /* MACH_ASSERT || DEBUG */
/*
* Exported procedures that operate on vm_map_t.
*/
/* Initialize the module */
-extern void vm_map_init(void) __attribute__((section("__TEXT, initcode")));
+extern void vm_map_init(void);
+
+extern void vm_kernel_reserved_entry_init(void);
/* Allocate a range in the specified virtual address map and
* return the entry allocated for that range. */
vm_map_size_t size,
vm_map_offset_t mask,
int flags,
+ vm_map_kernel_flags_t vmk_flags,
+ vm_tag_t tag,
vm_map_entry_t *o_entry); /* OUT */
+extern void vm_map_clip_start(
+ vm_map_t map,
+ vm_map_entry_t entry,
+ vm_map_offset_t endaddr);
+extern void vm_map_clip_end(
+ vm_map_t map,
+ vm_map_entry_t entry,
+ vm_map_offset_t endaddr);
+extern boolean_t vm_map_entry_should_cow_for_true_share(
+ vm_map_entry_t entry);
+
/* Lookup map entry containing or the specified address in the given map */
extern boolean_t vm_map_lookup_entry(
vm_map_t map,
vm_map_address_t address,
vm_map_entry_t *entry); /* OUT */
+extern void vm_map_copy_remap(
+ vm_map_t map,
+ vm_map_entry_t where,
+ vm_map_copy_t copy,
+ vm_map_offset_t adjustment,
+ vm_prot_t cur_prot,
+ vm_prot_t max_prot,
+ vm_inherit_t inheritance);
+
/* Find the VM object, offset, and protection for a given virtual address
* in the specified map, assuming a page fault of the type specified. */
extern kern_return_t vm_map_lookup_locked(
unsigned wired_count,
boolean_t no_cache,
boolean_t permanent,
- unsigned int superpage_size);
+ unsigned int superpage_size,
+ boolean_t clear_map_aligned,
+ boolean_t is_submap,
+ boolean_t used_for_jit,
+ int alias);
/*
/* Physical map associated
* with this address map */
-#define vm_map_verify_done(map, version) vm_map_unlock_read(map)
- /* Operation that required
- * a verified lookup is
- * now complete */
-
/*
* Macros/functions for map residence counts and swapin/out of vm maps
*/
*/
#define vm_map_entry_wait(map, interruptible) \
((map)->timestamp++ , \
- thread_sleep_lock_write((event_t)&(map)->hdr, \
- &(map)->lock, interruptible))
+ lck_rw_sleep(&(map)->lock, LCK_SLEEP_EXCLUSIVE|LCK_SLEEP_PROMOTED_PRI, \
+ (event_t)&(map)->hdr, interruptible))
#define vm_map_entry_wakeup(map) \
#define vm_map_dealloc_fast(map) \
MACRO_BEGIN \
- register int c; \
+ int c; \
\
lck_mtx_lock(&map->s_lock); \
c = --map->ref_count; \
vm_object_size_t size,
vm_map_copy_t *copy_result); /* OUT */
+extern kern_return_t vm_map_random_address_for_size(
+ vm_map_t map,
+ vm_map_offset_t *address,
+ vm_map_size_t size);
+
/* Enter a mapping */
extern kern_return_t vm_map_enter(
vm_map_t map,
vm_map_size_t size,
vm_map_offset_t mask,
int flags,
+ vm_map_kernel_flags_t vmk_flags,
+ vm_tag_t tag,
vm_object_t object,
vm_object_offset_t offset,
boolean_t needs_copy,
vm_prot_t max_protection,
vm_inherit_t inheritance);
+#if __arm64__
+extern kern_return_t vm_map_enter_fourk(
+ vm_map_t map,
+ vm_map_offset_t *address,
+ vm_map_size_t size,
+ vm_map_offset_t mask,
+ int flags,
+ vm_map_kernel_flags_t vmk_flags,
+ vm_tag_t tag,
+ vm_object_t object,
+ vm_object_offset_t offset,
+ boolean_t needs_copy,
+ vm_prot_t cur_protection,
+ vm_prot_t max_protection,
+ vm_inherit_t inheritance);
+#endif /* __arm64__ */
+
/* XXX should go away - replaced with regular enter of contig object */
extern kern_return_t vm_map_enter_cpm(
vm_map_t map,
vm_map_offset_t *address,
vm_map_size_t size,
vm_map_offset_t mask,
- boolean_t anywhere,
+ int flags,
+ vm_map_kernel_flags_t vmk_flags,
+ vm_tag_t tag,
vm_map_t src_map,
vm_map_offset_t memory_address,
boolean_t copy,
/* Create a new task map using an existing task map as a template. */
extern vm_map_t vm_map_fork(
- vm_map_t old_map);
+ ledger_t ledger,
+ vm_map_t old_map,
+ int options);
+#define VM_MAP_FORK_SHARE_IF_INHERIT_NONE 0x00000001
+#define VM_MAP_FORK_PRESERVE_PURGEABLE 0x00000002
/* Change inheritance */
extern kern_return_t vm_map_inherit(
vm_map_offset_t end,
vm_behavior_t new_behavior);
-extern kern_return_t vm_map_purgable_control(
- vm_map_t map,
- vm_map_offset_t address,
- vm_purgable_t control,
- int *state);
-
extern kern_return_t vm_map_region(
vm_map_t map,
vm_map_offset_t *address,
int *disposition,
int *ref_count);
+extern kern_return_t vm_map_query_volatile(
+ vm_map_t map,
+ mach_vm_size_t *volatile_virtual_size_p,
+ mach_vm_size_t *volatile_resident_size_p,
+ mach_vm_size_t *volatile_compressed_size_p,
+ mach_vm_size_t *volatile_pmap_size_p,
+ mach_vm_size_t *volatile_compressed_pmap_size_p);
extern kern_return_t vm_map_submap(
vm_map_t map,
ipc_port_t port);
+extern kern_return_t vm_map_set_cache_attr(
+ vm_map_t map,
+ vm_map_offset_t va);
+
+
/* definitions related to overriding the NX behavior */
#define VM_ABI_32 0x1
extern int override_nx(vm_map_t map, uint32_t user_tag);
+extern void vm_map_region_top_walk(
+ vm_map_entry_t entry,
+ vm_region_top_info_t top);
+extern void vm_map_region_walk(
+ vm_map_t map,
+ vm_map_offset_t va,
+ vm_map_entry_t entry,
+ vm_object_offset_t offset,
+ vm_object_size_t range,
+ vm_region_extended_info_t extended,
+ boolean_t look_for_pages,
+ mach_msg_type_number_t count);
+
#endif /* MACH_KERNEL_PRIVATE */
__BEGIN_DECLS
vm_map_offset_t max_off,
boolean_t pageable);
+extern void vm_map_disable_hole_optimization(vm_map_t map);
+
/* Get rid of a map */
extern void vm_map_destroy(
vm_map_t map,
vm_prot_t protection);
/* wire down a region */
+
+#ifdef XNU_KERNEL_PRIVATE
+
+extern kern_return_t vm_map_wire_kernel(
+ vm_map_t map,
+ vm_map_offset_t start,
+ vm_map_offset_t end,
+ vm_prot_t access_type,
+ vm_tag_t tag,
+ boolean_t user_wire);
+
+extern kern_return_t vm_map_wire_and_extract_kernel(
+ vm_map_t map,
+ vm_map_offset_t start,
+ vm_prot_t access_type,
+ vm_tag_t tag,
+ boolean_t user_wire,
+ ppnum_t *physpage_p);
+
+/* kext exported versions */
+
+extern kern_return_t vm_map_wire_external(
+ vm_map_t map,
+ vm_map_offset_t start,
+ vm_map_offset_t end,
+ vm_prot_t access_type,
+ boolean_t user_wire);
+
+extern kern_return_t vm_map_wire_and_extract_external(
+ vm_map_t map,
+ vm_map_offset_t start,
+ vm_prot_t access_type,
+ boolean_t user_wire,
+ ppnum_t *physpage_p);
+
+#else /* XNU_KERNEL_PRIVATE */
+
extern kern_return_t vm_map_wire(
vm_map_t map,
vm_map_offset_t start,
vm_prot_t access_type,
boolean_t user_wire);
+extern kern_return_t vm_map_wire_and_extract(
+ vm_map_t map,
+ vm_map_offset_t start,
+ vm_prot_t access_type,
+ boolean_t user_wire,
+ ppnum_t *physpage_p);
+
+#endif /* !XNU_KERNEL_PRIVATE */
+
/* unwire a region */
extern kern_return_t vm_map_unwire(
vm_map_t map,
vm_map_offset_t end,
boolean_t user_wire);
+#ifdef XNU_KERNEL_PRIVATE
+
/* Enter a mapping of a memory object */
extern kern_return_t vm_map_enter_mem_object(
vm_map_t map,
vm_map_size_t size,
vm_map_offset_t mask,
int flags,
+ vm_map_kernel_flags_t vmk_flags,
+ vm_tag_t tag,
ipc_port_t port,
vm_object_offset_t offset,
boolean_t needs_copy,
vm_prot_t max_protection,
vm_inherit_t inheritance);
+/* Enter a mapping of a memory object */
+extern kern_return_t vm_map_enter_mem_object_prefault(
+ vm_map_t map,
+ vm_map_offset_t *address,
+ vm_map_size_t size,
+ vm_map_offset_t mask,
+ int flags,
+ vm_map_kernel_flags_t vmk_flags,
+ vm_tag_t tag,
+ ipc_port_t port,
+ vm_object_offset_t offset,
+ vm_prot_t cur_protection,
+ vm_prot_t max_protection,
+ upl_page_list_ptr_t page_list,
+ unsigned int page_list_count);
+
/* Enter a mapping of a memory object */
extern kern_return_t vm_map_enter_mem_object_control(
vm_map_t map,
vm_map_size_t size,
vm_map_offset_t mask,
int flags,
+ vm_map_kernel_flags_t vmk_flags,
+ vm_tag_t tag,
memory_object_control_t control,
vm_object_offset_t offset,
boolean_t needs_copy,
vm_prot_t max_protection,
vm_inherit_t inheritance);
+#endif /* !XNU_KERNEL_PRIVATE */
+
/* Deallocate a region */
extern kern_return_t vm_map_remove(
vm_map_t map,
vm_map_offset_t end,
boolean_t flags);
+/* Deallocate a region when the map is already locked */
+extern kern_return_t vm_map_remove_locked(
+ vm_map_t map,
+ vm_map_offset_t start,
+ vm_map_offset_t end,
+ boolean_t flags);
+
/* Discard a copy without using it */
extern void vm_map_copy_discard(
vm_map_copy_t copy);
vm_map_copy_t copy,
boolean_t interruptible);
+/* returns TRUE if size of vm_map_copy == size parameter FALSE otherwise */
+extern boolean_t vm_map_copy_validate_size(
+ vm_map_t dst_map,
+ vm_map_copy_t copy,
+ vm_map_size_t *size);
+
/* Place a copy into a map */
extern kern_return_t vm_map_copyout(
vm_map_t dst_map,
vm_map_address_t *dst_addr, /* OUT */
vm_map_copy_t copy);
+extern kern_return_t vm_map_copyout_size(
+ vm_map_t dst_map,
+ vm_map_address_t *dst_addr, /* OUT */
+ vm_map_copy_t copy,
+ vm_map_size_t copy_size);
+
+extern kern_return_t vm_map_copyout_internal(
+ vm_map_t dst_map,
+ vm_map_address_t *dst_addr, /* OUT */
+ vm_map_copy_t copy,
+ vm_map_size_t copy_size,
+ boolean_t consume_on_success,
+ vm_prot_t cur_protection,
+ vm_prot_t max_protection,
+ vm_inherit_t inheritance);
+
extern kern_return_t vm_map_copyin(
vm_map_t src_map,
vm_map_address_t src_addr,
vm_map_copy_t *copy_result, /* OUT */
boolean_t use_maxprot);
+#define VM_MAP_COPYIN_SRC_DESTROY 0x00000001
+#define VM_MAP_COPYIN_USE_MAXPROT 0x00000002
+#define VM_MAP_COPYIN_ENTRY_LIST 0x00000004
+#define VM_MAP_COPYIN_PRESERVE_PURGEABLE 0x00000008
+#define VM_MAP_COPYIN_ALL_FLAGS 0x0000000F
+extern kern_return_t vm_map_copyin_internal(
+ vm_map_t src_map,
+ vm_map_address_t src_addr,
+ vm_map_size_t len,
+ int flags,
+ vm_map_copy_t *copy_result); /* OUT */
+
+extern kern_return_t vm_map_copy_extract(
+ vm_map_t src_map,
+ vm_map_address_t src_addr,
+ vm_map_size_t len,
+ vm_map_copy_t *copy_result, /* OUT */
+ vm_prot_t *cur_prot, /* OUT */
+ vm_prot_t *max_prot);
+
+
extern void vm_map_disable_NX(
vm_map_t map);
+extern void vm_map_disallow_data_exec(
+ vm_map_t map);
+
extern void vm_map_set_64bit(
vm_map_t map);
extern void vm_map_set_32bit(
vm_map_t map);
-extern boolean_t vm_map_is_64bit(
+extern void vm_map_set_jumbo(
vm_map_t map);
-extern boolean_t vm_map_has_4GB_pagezero(
- vm_map_t map);
+extern boolean_t vm_map_has_hard_pagezero(
+ vm_map_t map,
+ vm_map_offset_t pagezero_size);
+extern void vm_commit_pagezero_status(vm_map_t tmap);
-extern void vm_map_set_4GB_pagezero(
+#ifdef __arm__
+static inline boolean_t vm_map_is_64bit(__unused vm_map_t map) { return 0; }
+#else
+extern boolean_t vm_map_is_64bit(
vm_map_t map);
+#endif
-extern void vm_map_clear_4GB_pagezero(
- vm_map_t map);
+
+extern kern_return_t vm_map_raise_max_offset(
+ vm_map_t map,
+ vm_map_offset_t new_max_offset);
extern kern_return_t vm_map_raise_min_offset(
vm_map_t map,
vm_map_offset_t new_min_offset);
+#if __x86_64__
+extern void vm_map_set_high_start(
+ vm_map_t map,
+ vm_map_offset_t high_start);
+#endif /* __x86_64__ */
extern vm_map_offset_t vm_compute_max_offset(
- unsigned is64);
+ boolean_t is64);
+
+extern void vm_map_get_max_aslr_slide_section(
+ vm_map_t map,
+ int64_t *max_sections,
+ int64_t *section_size);
+
+extern uint64_t vm_map_get_max_aslr_slide_pages(
+ vm_map_t map);
+
+extern uint64_t vm_map_get_max_loader_aslr_slide_pages(
+ vm_map_t map);
extern void vm_map_set_user_wire_limit(
vm_map_t map,
vm_size_t limit);
extern void vm_map_switch_protect(
- vm_map_t map,
+ vm_map_t map,
boolean_t val);
+extern void vm_map_iokit_mapped_region(
+ vm_map_t map,
+ vm_size_t bytes);
+
+extern void vm_map_iokit_unmapped_region(
+ vm_map_t map,
+ vm_size_t bytes);
+
+
+extern boolean_t first_free_is_valid(vm_map_t);
+
+extern int vm_map_page_shift(
+ vm_map_t map);
+
+extern vm_map_offset_t vm_map_page_mask(
+ vm_map_t map);
+
+extern int vm_map_page_size(
+ vm_map_t map);
+
+extern vm_map_offset_t vm_map_round_page_mask(
+ vm_map_offset_t offset,
+ vm_map_offset_t mask);
+
+extern vm_map_offset_t vm_map_trunc_page_mask(
+ vm_map_offset_t offset,
+ vm_map_offset_t mask);
+
+extern boolean_t vm_map_page_aligned(
+ vm_map_offset_t offset,
+ vm_map_offset_t mask);
+
#ifdef XNU_KERNEL_PRIVATE
extern kern_return_t vm_map_page_info(
vm_map_t map,
vm_page_info_flavor_t flavor,
vm_page_info_t info,
mach_msg_type_number_t *count);
+extern kern_return_t vm_map_page_range_info_internal(
+ vm_map_t map,
+ vm_map_offset_t start_offset,
+ vm_map_offset_t end_offset,
+ vm_page_info_flavor_t flavor,
+ vm_page_info_t info,
+ mach_msg_type_number_t *count);
#endif /* XNU_KERNEL_PRIVATE */
vm_map_copyin_common(src_map, src_addr, len, src_destroy, \
FALSE, copy_result, TRUE)
-#endif /* MACH_KERNEL_PRIVATE */
+
+/*
+ * Internal macros for rounding and truncation of vm_map offsets and sizes
+ */
+#define VM_MAP_ROUND_PAGE(x,pgmask) (((vm_map_offset_t)(x) + (pgmask)) & ~((signed)(pgmask)))
+#define VM_MAP_TRUNC_PAGE(x,pgmask) ((vm_map_offset_t)(x) & ~((signed)(pgmask)))
/*
* Macros for rounding and truncation of vm_map offsets and sizes
*/
-#define vm_map_round_page(x) (((vm_map_offset_t)(x) + PAGE_MASK) & ~((signed)PAGE_MASK))
-#define vm_map_trunc_page(x) ((vm_map_offset_t)(x) & ~((signed)PAGE_MASK))
+#define VM_MAP_PAGE_SHIFT(map) ((map) ? (map)->hdr.page_shift : PAGE_SHIFT)
+#define VM_MAP_PAGE_SIZE(map) (1 << VM_MAP_PAGE_SHIFT((map)))
+#define VM_MAP_PAGE_MASK(map) (VM_MAP_PAGE_SIZE((map)) - 1)
+#define VM_MAP_PAGE_ALIGNED(x,pgmask) (((x) & (pgmask)) == 0)
+
+static inline void vm_prot_to_wimg(unsigned int prot, unsigned int *wimg)
+{
+ switch (prot) {
+ case MAP_MEM_NOOP: break;
+ case MAP_MEM_IO: *wimg = VM_WIMG_IO; break;
+ case MAP_MEM_COPYBACK: *wimg = VM_WIMG_USE_DEFAULT; break;
+ case MAP_MEM_INNERWBACK: *wimg = VM_WIMG_INNERWBACK; break;
+ case MAP_MEM_POSTED: *wimg = VM_WIMG_POSTED; break;
+ case MAP_MEM_WTHRU: *wimg = VM_WIMG_WTHRU; break;
+ case MAP_MEM_WCOMB: *wimg = VM_WIMG_WCOMB; break;
+ default:
+ panic("Unrecognized mapping type %u\n", prot);
+ }
+}
+
+#endif /* MACH_KERNEL_PRIVATE */
+
+#ifdef XNU_KERNEL_PRIVATE
+extern kern_return_t vm_map_set_page_shift(vm_map_t map, int pageshift);
+#endif /* XNU_KERNEL_PRIVATE */
+
+#define vm_map_round_page(x,pgmask) (((vm_map_offset_t)(x) + (pgmask)) & ~((signed)(pgmask)))
+#define vm_map_trunc_page(x,pgmask) ((vm_map_offset_t)(x) & ~((signed)(pgmask)))
/*
* Flags for vm_map_remove() and vm_map_delete()
#define VM_MAP_REMOVE_WAIT_FOR_KWIRE 0x4
#define VM_MAP_REMOVE_SAVE_ENTRIES 0x8
#define VM_MAP_REMOVE_NO_PMAP_CLEANUP 0x10
+#define VM_MAP_REMOVE_NO_MAP_ALIGN 0x20
+#define VM_MAP_REMOVE_NO_UNNESTING 0x40
+#define VM_MAP_REMOVE_IMMUTABLE 0x80
/* Support for UPLs from vm_maps */
+#ifdef XNU_KERNEL_PRIVATE
+
extern kern_return_t vm_map_get_upl(
vm_map_t target_map,
vm_map_offset_t map_offset,
upl_size_t *size,
upl_t *upl,
upl_page_info_array_t page_info,
- unsigned int *page_infoCnt,
- int *flags,
- int force_data_sync);
+ unsigned int *page_infoCnt,
+ upl_control_flags_t *flags,
+ vm_tag_t tag,
+ int force_data_sync);
+
+#endif /* XNU_KERNEL_PRIVATE */
+
+extern void
+vm_map_sizes(vm_map_t map,
+ vm_map_size_t * psize,
+ vm_map_size_t * pfree,
+ vm_map_size_t * plargest_free);
+
+#if CONFIG_DYNAMIC_CODE_SIGNING
+extern kern_return_t vm_map_sign(vm_map_t map,
+ vm_map_offset_t start,
+ vm_map_offset_t end);
+#endif
+
+extern kern_return_t vm_map_partial_reap(
+ vm_map_t map,
+ unsigned int *reclaimed_resident,
+ unsigned int *reclaimed_compressed);
+
+
+#if DEVELOPMENT || DEBUG
+
+extern int vm_map_disconnect_page_mappings(
+ vm_map_t map,
+ boolean_t);
+#endif
+
+
+#if CONFIG_FREEZE
+
+extern kern_return_t vm_map_freeze(
+ vm_map_t map,
+ unsigned int *purgeable_count,
+ unsigned int *wired_count,
+ unsigned int *clean_count,
+ unsigned int *dirty_count,
+ unsigned int dirty_budget,
+ boolean_t *has_shared);
+#endif
__END_DECLS
+/*
+ * In some cases, we don't have a real VM object but still want to return a
+ * unique ID (to avoid a memory region looking like shared memory), so build
+ * a fake pointer based on the map's ledger and the index of the ledger being
+ * reported.
+ */
+#define INFO_MAKE_FAKE_OBJECT_ID(map,ledger_id) ((uint32_t)(uintptr_t)VM_KERNEL_ADDRPERM((int*)((map)->pmap->ledger)+(ledger_id)))
+
#endif /* KERNEL_PRIVATE */
#endif /* _VM_VM_MAP_H_ */
projects / apple / xnu.git / blobdiff