1#- 2# Copyright (c) 2000 Doug Rabson 3# All rights reserved. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions 7# are met: 8# 1. Redistributions of source code must retain the above copyright 9# notice, this list of conditions and the following disclaimer. 10# 2. Redistributions in binary form must reproduce the above copyright 11# notice, this list of conditions and the following disclaimer in the 12# documentation and/or other materials provided with the distribution. 13# 14# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24# SUCH DAMAGE. 25# 26# $FreeBSD$ 27# 28 29#include <sys/linker.h> 30 31INTERFACE linker; 32 33# 34# Lookup a symbol in the file's symbol table. If the symbol is not 35# found then return ENOENT, otherwise zero. 36# 37METHOD int lookup_symbol { 38 linker_file_t file; 39 const char* name; 40 c_linker_sym_t* symp; 41}; 42 43METHOD int symbol_values { 44 linker_file_t file; 45 c_linker_sym_t sym; 46 linker_symval_t* valp; 47}; 48 49METHOD int search_symbol { 50 linker_file_t file; 51 caddr_t value; 52 c_linker_sym_t* symp; 53 long* diffp; 54}; 55 56# 57# Call the callback with each specified function defined in the file. 58# Stop and return the error if the callback returns an error. 59# 60METHOD int each_function_name { 61 linker_file_t file; 62 linker_function_name_callback_t callback; 63 void* opaque; 64}; 65 66# 67# Search for a linker set in a file. Return a pointer to the first 68# entry (which is itself a pointer), and the number of entries. 69# "stop" points to the entry beyond the last valid entry. 70# If count, start or stop are NULL, they are not returned. 71# 72METHOD int lookup_set { 73 linker_file_t file; 74 const char* name; 75 void*** start; 76 void*** stop; 77 int* count; 78}; 79 80# 81# Unload a file, releasing dependancies and freeing storage. 82# 83METHOD void unload { 84 linker_file_t file; 85}; 86 87# 88# Load a file, returning the new linker_file_t in *result. If 89# the class does not recognise the file type, zero should be 90# returned, without modifying *result. If the file is 91# recognised, the file should be loaded, *result set to the new 92# file and zero returned. If some other error is detected an 93# appropriate errno should be returned. 94# 95STATICMETHOD int load_file { 96 linker_class_t cls; 97 const char* filename; 98 linker_file_t* result; 99}; 100STATICMETHOD int link_preload { 101 linker_class_t cls; 102 const char* filename; 103 linker_file_t* result; 104}; 105METHOD int link_preload_finish { 106 linker_file_t file; 107}; 108