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# Search for a linker set in a file. Return a pointer to the first 58# entry (which is itself a pointer), and the number of entries. 59# "stop" points to the entry beyond the last valid entry. 60# If count, start or stop are NULL, they are not returned. 61# 62METHOD int lookup_set { 63 linker_file_t file; 64 const char* name; 65 void*** start; 66 void*** stop; 67 int* count; 68}; 69 70# 71# Unload a file, releasing dependancies and freeing storage. 72# 73METHOD void unload { 74 linker_file_t file; 75}; 76 77# 78# Load a file, returning the new linker_file_t in *result. If 79# the class does not recognise the file type, zero should be 80# returned, without modifying *result. If the file is 81# recognised, the file should be loaded, *result set to the new 82# file and zero returned. If some other error is detected an 83# appropriate errno should be returned. 84# 85STATICMETHOD int load_file { 86 linker_class_t cls; 87 const char* filename; 88 linker_file_t* result; 89}; 90STATICMETHOD int link_preload { 91 linker_class_t cls; 92 const char* filename; 93 linker_file_t* result; 94}; 95STATICMETHOD int link_preload_finish { 96 linker_file_t file; 97}; 98