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# Call the callback with each specified function and it's value 68# defined in the file. 69# Stop and return the error if the callback returns an error. 70# 71METHOD int each_function_nameval { 72 linker_file_t file; 73 linker_function_nameval_callback_t callback; 74 void* opaque; 75}; 76 77# 78# Search for a linker set in a file. Return a pointer to the first 79# entry (which is itself a pointer), and the number of entries. 80# "stop" points to the entry beyond the last valid entry. 81# If count, start or stop are NULL, they are not returned. 82# 83METHOD int lookup_set { 84 linker_file_t file; 85 const char* name; 86 void*** start; 87 void*** stop; 88 int* count; 89}; 90 91# 92# Unload a file, releasing dependencies and freeing storage. 93# 94METHOD void unload { 95 linker_file_t file; 96}; 97 98# 99# Load CTF data if necessary and if there is a .SUNW_ctf section 100# in the ELF file, returning info in the linker CTF structure. 101# 102METHOD int ctf_get { 103 linker_file_t file; 104 linker_ctf_t *lc; 105}; 106 107# 108# Get the symbol table, returning it in **symtab. Return the 109# number of symbols, otherwise zero. 110# 111METHOD long symtab_get { 112 linker_file_t file; 113 const Elf_Sym **symtab; 114}; 115 116# 117# Get the string table, returning it in *strtab. Return the 118# size (in bytes) of the string table, otherwise zero. 119# 120METHOD long strtab_get { 121 linker_file_t file; 122 caddr_t *strtab; 123}; 124 125# 126# Load a file, returning the new linker_file_t in *result. If 127# the class does not recognise the file type, zero should be 128# returned, without modifying *result. If the file is 129# recognised, the file should be loaded, *result set to the new 130# file and zero returned. If some other error is detected an 131# appropriate errno should be returned. 132# 133STATICMETHOD int load_file { 134 linker_class_t cls; 135 const char* filename; 136 linker_file_t* result; 137}; 138STATICMETHOD int link_preload { 139 linker_class_t cls; 140 const char* filename; 141 linker_file_t* result; 142}; 143METHOD int link_preload_finish { 144 linker_file_t file; 145}; 146