| | 1 | /* |
| | 2 | * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * The contents of this file constitute Original Code as defined in and |
| | 7 | * are subject to the Apple Public Source License Version 1.1 (the |
| | 8 | * "License"). You may not use this file except in compliance with the |
| | 9 | * License. Please obtain a copy of the License at |
| | 10 | * http://www.apple.com/publicsource and read it before using this file. |
| | 11 | * |
| | 12 | * This Original Code and all software distributed under the License are |
| | 13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the |
| | 17 | * License for the specific language governing rights and limitations |
| | 18 | * under the License. |
| | 19 | * |
| | 20 | * @APPLE_LICENSE_HEADER_END@ |
| | 21 | */ |
| | 22 | /* |
| | 23 | * |
| | 24 | * File: mach/shared_memory_server.h |
| | 25 | * |
| | 26 | * protos and struct definitions for shared library |
| | 27 | * server and interface |
| | 28 | */ |
| | 29 | #ifndef _MACH_SHARED_MEMORY_SERVER_H_ |
| | 30 | #define _MACH_SHARED_MEMORY_SERVER_H_ |
| | 31 | |
| | 32 | #include <sys/cdefs.h> |
| | 33 | #include <mach/vm_prot.h> |
| | 34 | #include <mach/vm_types.h> |
| | 35 | #include <mach/mach_types.h> |
| | 36 | |
| | 37 | #define VM_PROT_COW 0x8 /* must not interfere with normal prot assignments */ |
| | 38 | #define VM_PROT_ZF 0x10 /* must not interfere with normal prot assignments */ |
| | 39 | |
| | 40 | |
| | 41 | #if !defined(__LP64__) |
| | 42 | |
| | 43 | #define SHARED_LIBRARY_SERVER_SUPPORTED |
| | 44 | #define GLOBAL_SHARED_TEXT_SEGMENT 0x90000000 |
| | 45 | #define GLOBAL_SHARED_DATA_SEGMENT 0xA0000000 |
| | 46 | #define GLOBAL_SHARED_SEGMENT_MASK 0xF0000000 |
| | 47 | |
| | 48 | #define SHARED_TEXT_REGION_SIZE 0x10000000 |
| | 49 | #define SHARED_DATA_REGION_SIZE 0x10000000 |
| | 50 | #define SHARED_ALTERNATE_LOAD_BASE 0x09000000 |
| | 51 | |
| | 52 | /* |
| | 53 | * Note: the two masks below are useful because the assumption is |
| | 54 | * made that these shared regions will always be mapped on natural boundaries |
| | 55 | * i.e. if the size is 0x10000000 the object can be mapped at |
| | 56 | * 0x20000000, or 0x30000000, but not 0x1000000 |
| | 57 | */ |
| | 58 | #define SHARED_TEXT_REGION_MASK 0x0FFFFFFF |
| | 59 | #define SHARED_DATA_REGION_MASK 0x0FFFFFFF |
| | 60 | |
| | 61 | #define SHARED_LIB_ALIAS 0x10 |
| | 62 | |
| | 63 | |
| | 64 | /* flags field aliases for copyin_shared_file and load_shared_file */ |
| | 65 | |
| | 66 | /* IN */ |
| | 67 | #define ALTERNATE_LOAD_SITE 0x1 |
| | 68 | #define NEW_LOCAL_SHARED_REGIONS 0x2 |
| | 69 | #define QUERY_IS_SYSTEM_REGION 0x4 |
| | 70 | |
| | 71 | /* OUT */ |
| | 72 | #define SF_PREV_LOADED 0x1 |
| | 73 | #define SYSTEM_REGION_BACKED 0x2 |
| | 74 | |
| | 75 | |
| | 76 | struct sf_mapping { |
| | 77 | vm_offset_t mapping_offset; |
| | 78 | vm_size_t size; |
| | 79 | vm_offset_t file_offset; |
| | 80 | vm_prot_t protection; /* read/write/execute/COW/ZF */ |
| | 81 | vm_offset_t cksum; |
| | 82 | }; |
| | 83 | typedef struct sf_mapping sf_mapping_t; |
| | 84 | |
| | 85 | #ifndef KERNEL |
| | 86 | /* load_shared_file and friends is deprecated */ |
| | 87 | __BEGIN_DECLS |
| | 88 | int load_shared_file(char *, caddr_t, u_long, |
| | 89 | caddr_t *, int, sf_mapping_t *, int *); |
| | 90 | int reset_shared_file(caddr_t *, int, sf_mapping_t *); |
| | 91 | int new_system_shared_regions(void); |
| | 92 | __END_DECLS |
| | 93 | #endif /* !KERNEL */ |
| | 94 | |
| | 95 | #endif /* !defined(__LP64__) */ |
| | 96 | |
| | 97 | /* |
| | 98 | * All shared_region_* declarations are a private interface |
| | 99 | * between dyld and the kernel. |
| | 100 | * |
| | 101 | */ |
| | 102 | struct shared_file_mapping_np { |
| | 103 | mach_vm_address_t sfm_address; |
| | 104 | mach_vm_size_t sfm_size; |
| | 105 | mach_vm_offset_t sfm_file_offset; |
| | 106 | vm_prot_t sfm_max_prot; |
| | 107 | vm_prot_t sfm_init_prot; |
| | 108 | }; |
| | 109 | |
| | 110 | struct shared_region_range_np { |
| | 111 | mach_vm_address_t srr_address; |
| | 112 | mach_vm_size_t srr_size; |
| | 113 | }; |
| | 114 | |
| | 115 | #ifndef KERNEL |
| | 116 | |
| | 117 | __BEGIN_DECLS |
| | 118 | int shared_region_map_file_np(int fd, |
| | 119 | uint32_t mappingCount, |
| | 120 | const struct shared_file_mapping_np *mappings, |
| | 121 | int64_t *slide_p); |
| | 122 | int shared_region_make_private_np(uint32_t rangeCount, |
| | 123 | const struct shared_region_range_np *ranges); |
| | 124 | __END_DECLS |
| | 125 | |
| | 126 | #endif /* !KERNEL */ |
| | 127 | |
| | 128 | #endif /* _MACH_SHARED_MEMORY_SERVER_H_ */ |
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