xnu-3248.60.10.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..9cc2b394ca0ceaaab4927e3faf4139b710cec6f5 100644 (file)
--- a/osfmk/vm/vm_shared_region.h
+++ b/osfmk/vm/vm_shared_region.h
@@ -92,6 +92,32 @@ typedef struct vm_shared_region *vm_shared_region_t;
 #include <vm/vm_object.h>
 #include <vm/memory_object.h>
 
+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    (0x1000/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;
+};
+
 /* address space shared region descriptor */
 struct vm_shared_region {
        uint32_t                sr_ref_count;
@@ -100,7 +126,9 @@ struct vm_shared_region {
        cpu_type_t              sr_cpu_type;
        boolean_t               sr_64bit;
        boolean_t               sr_mapping_in_progress;
+       boolean_t               sr_slide_in_progress;
        boolean_t               sr_persists;
+       boolean_t               sr_slid;
        ipc_port_t              sr_mem_entry;
        mach_vm_offset_t        sr_first_mapping;
        mach_vm_offset_t        sr_base_address;
@@ -108,11 +136,19 @@ struct vm_shared_region {
        mach_vm_offset_t        sr_pmap_nesting_start;
        mach_vm_size_t          sr_pmap_nesting_size;
        thread_call_t           sr_timer_call;
+       struct vm_shared_region_slide_info sr_slide_info;
 };
 
+extern kern_return_t vm_shared_region_slide_page(vm_shared_region_slide_info_t si,
+       vm_offset_t     vaddr, 
+       uint32_t pageIndex);
+extern vm_shared_region_slide_info_t vm_shared_region_get_slide_info(vm_shared_region_t sr);
 #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 */
 
@@ -135,6 +171,8 @@ extern mach_vm_size_t vm_shared_region_size(
        struct vm_shared_region *shared_region);
 extern ipc_port_t vm_shared_region_mem_entry(
        struct vm_shared_region *shared_region);
+extern uint32_t vm_shared_region_get_slide(
+       vm_shared_region_t      shared_region);
 extern void vm_shared_region_set(
        struct task             *task,
        struct vm_shared_region *new_shared_region);
@@ -145,21 +183,44 @@ 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,
+       uint32_t                slide,
+       user_addr_t             slide_start,
+       user_addr_t             slide_size);
+extern kern_return_t vm_shared_region_sliding_valid(uint32_t slide);
+extern kern_return_t vm_shared_region_slide_sanity_check(vm_shared_region_t sr);
+extern kern_return_t vm_shared_region_slide_init(vm_shared_region_t sr,
+               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_entry(vm_shared_region_t sr);
 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);
 extern kern_return_t vm_commpage_remove(
        struct _vm_map          *map,
        struct task             *task);
+int vm_shared_region_slide(uint32_t, 
+       mach_vm_offset_t, 
+       mach_vm_size_t, 
+       mach_vm_offset_t, 
+       mach_vm_size_t, 
+       memory_object_control_t);
 
 #endif /* KERNEL_PRIVATE */