xnu-2050.7.9.tar.gz

[apple/xnu.git] / osfmk / vm / vm_shared_region.h

diff --git a/osfmk/vm/vm_shared_region.h b/osfmk/vm/vm_shared_region.h
index 9cc8ba5af64944b4499ddc813771e30e6d8dff36..cec44658f73d942329fb5d54e2793d03332a7683 100644 (file)
--- a/osfmk/vm/vm_shared_region.h
+++ b/osfmk/vm/vm_shared_region.h
@@ -43,6 +43,7 @@
 
 extern int shared_region_version;
 extern int shared_region_persistence;
+extern boolean_t shared_region_completed_slide;
 
 #if DEBUG
 extern int shared_region_debug;
@@ -110,9 +111,41 @@ struct vm_shared_region {
        thread_call_t           sr_timer_call;
 };
 
+typedef struct vm_shared_region_slide_info_entry       *vm_shared_region_slide_info_entry_t;
+struct vm_shared_region_slide_info_entry {
+       uint32_t        version;
+       uint32_t        toc_offset;     // offset from start of header to table-of-contents
+       uint32_t        toc_count;      // number of entries in toc (same as number of pages in r/w mapping)
+       uint32_t        entry_offset;
+       uint32_t        entry_count;
+};
+
+#define NBBY   8
+#define        NUM_SLIDING_BITMAPS_PER_PAGE    (PAGE_SIZE/sizeof(int)/NBBY) /*128*/
+typedef struct slide_info_entry_toc    *slide_info_entry_toc_t;
+struct slide_info_entry_toc { 
+       uint8_t entry[NUM_SLIDING_BITMAPS_PER_PAGE];
+};
+
+typedef struct vm_shared_region_slide_info vm_shared_region_slide_info_t;
+struct vm_shared_region_slide_info {
+       mach_vm_offset_t        start;
+       mach_vm_offset_t        end;
+       uint32_t                slide;
+       vm_object_t             slide_object;
+       mach_vm_size_t          slide_info_size;
+       vm_shared_region_slide_info_entry_t     slide_info_entry;
+       vm_shared_region_t      sr;
+};
+
+extern struct vm_shared_region_slide_info      slide_info;
+
 #else  /* !MACH_KERNEL_PRIVATE */
 
 struct vm_shared_region;
+struct vm_shared_region_slide_info;
+struct vm_shared_region_slide_info_entry;
+struct slide_info_entry_toc;
 
 #endif /* MACH_KERNEL_PRIVATE */
 
@@ -145,15 +178,33 @@ extern vm_shared_region_t vm_shared_region_lookup(
 extern kern_return_t vm_shared_region_start_address(
        struct vm_shared_region *shared_region,
        mach_vm_offset_t        *start_address);
+extern void vm_shared_region_undo_mappings(
+                       vm_map_t sr_map,
+                       mach_vm_offset_t sr_base_address,
+                       struct shared_file_mapping_np *mappings,
+                       unsigned int mappings_count);
 extern kern_return_t vm_shared_region_map_file(
        struct vm_shared_region *shared_region,
        unsigned int            mappings_count,
        struct shared_file_mapping_np *mappings,
        memory_object_control_t file_control,
        memory_object_size_t    file_size,
-       void                    *root_dir);
-
+       void                    *root_dir,
+       struct shared_file_mapping_np *mapping_to_slide);
+extern kern_return_t vm_shared_region_sliding_valid(uint32_t slide);
+extern kern_return_t vm_shared_region_slide_sanity_check(void);
+extern kern_return_t vm_shared_region_slide_init(mach_vm_size_t slide_info_size,
+               mach_vm_offset_t start,
+               mach_vm_size_t size,
+               uint32_t slide,
+               memory_object_control_t);
+extern void* vm_shared_region_get_slide_info(void);
+extern void* vm_shared_region_get_slide_info_entry(void);
+extern kern_return_t vm_shared_region_slide(
+       vm_offset_t     vaddr, 
+       uint32_t pageIndex);
 extern void vm_commpage_init(void);
+extern void vm_commpage_text_init(void);
 extern kern_return_t vm_commpage_enter(
        struct _vm_map          *map,
        struct task             *task);