1 /* 2 * Copyright 2003-2011, Axel Dörfler, axeld@pinc-software.de. 3 * Distributed under the terms of the MIT License. 4 * 5 * Copyright 2002, Manuel J. Petit. All rights reserved. 6 * Distributed under the terms of the NewOS License. 7 */ 8 9 10 #include "runtime_loader_private.h" 11 #include "elf_tls.h" 12 13 14 // exported via the rld_export structure in user space program arguments 15 16 17 static image_id 18 export_load_add_on(char const *name, uint32 flags) 19 { 20 void* handle; 21 return load_library(name, flags, true, &handle); 22 } 23 24 25 static status_t 26 export_unload_add_on(image_id id) 27 { 28 return unload_library(NULL, id, true); 29 } 30 31 32 static image_id 33 export_load_library(char const *name, uint32 flags, void **_handle) 34 { 35 return load_library(name, flags, false, _handle); 36 } 37 38 39 static status_t 40 export_unload_library(void* handle) 41 { 42 return unload_library(handle, -1, false); 43 } 44 45 46 status_t 47 reinit_after_fork() 48 { 49 status_t returnstatus = B_OK; 50 if (status_t status = elf_reinit_after_fork()) 51 returnstatus = status; 52 if (status_t status = heap_reinit_after_fork()) 53 returnstatus = status; 54 return returnstatus; 55 } 56 57 58 struct rld_export gRuntimeLoader = { 59 // dynamic loading support API 60 export_load_add_on, 61 export_unload_add_on, 62 export_load_library, 63 export_unload_library, 64 get_symbol, 65 get_library_symbol, 66 get_nth_symbol, 67 get_nearest_symbol_at_address, 68 test_executable, 69 get_executable_architecture, 70 get_next_image_dependency, 71 get_tls_address, 72 destroy_thread_tls, 73 74 reinit_after_fork, 75 NULL, // call_atexit_hooks_for_range 76 terminate_program, 77 78 // the following values will be set later 79 NULL, // program_args 80 NULL, // commpage_address 81 0 // ABI version 82 }; 83 84 rld_export* __gRuntimeLoader = &gRuntimeLoader; 85 86 87 void 88 rldexport_init(void) 89 { 90 gRuntimeLoader.program_args = gProgramArgs; 91 gRuntimeLoader.commpage_address = __gCommPageAddress; 92 } 93 94 95 /*! Is called for all images, and sets the minimum ABI version found to the 96 gRuntimeLoader.abi_version field and the minimum API version found to the 97 gRuntimeLoader.api_version field. 98 */ 99 void 100 set_abi_api_version(int abi_version, int api_version) 101 { 102 if (gRuntimeLoader.abi_version == 0 103 || gRuntimeLoader.abi_version > abi_version) { 104 gRuntimeLoader.abi_version = abi_version; 105 } 106 if (gRuntimeLoader.api_version == 0 107 || gRuntimeLoader.api_version > api_version) { 108 gRuntimeLoader.api_version = api_version; 109 } 110 } 111