2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright 1996-1998 John D. Polstra.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 * Support for printing debugging messages.
39 #include "rtld_printf.h"
41 static const char rel_header[] =
42 " symbol name r_info r_offset st_value st_size address value\n"
43 " ------------------------------------------------------------------------------\n";
44 static const char rel_format[] = " %-25s %6lx %08lx %08lx %7d %10p %08lx\n";
49 debug_printf(const char *format, ...)
55 rtld_vfdprintf(STDERR_FILENO, format, ap);
56 rtld_fdputchar(STDERR_FILENO, '\n');
63 dump_relocations (Obj_Entry *obj0)
67 for (obj = globallist_curr(obj0); obj != NULL;
68 obj = globallist_next(obj)) {
69 dump_obj_relocations(obj);
74 dump_obj_relocations (Obj_Entry *obj)
77 rtld_printf("Object \"%s\", relocbase %p\n", obj->path, obj->relocbase);
80 rtld_printf("Non-PLT Relocations: %ld\n",
81 (obj->relsize / sizeof(Elf_Rel)));
82 dump_Elf_Rel(obj, obj->rel, obj->relsize);
86 rtld_printf("Non-PLT Relocations with Addend: %ld\n",
87 (obj->relasize / sizeof(Elf_Rela)));
88 dump_Elf_Rela(obj, obj->rela, obj->relasize);
91 if (obj->pltrelsize) {
92 rtld_printf("PLT Relocations: %ld\n",
93 (obj->pltrelsize / sizeof(Elf_Rel)));
94 dump_Elf_Rel(obj, obj->pltrel, obj->pltrelsize);
97 if (obj->pltrelasize) {
98 rtld_printf("PLT Relocations with Addend: %ld\n",
99 (obj->pltrelasize / sizeof(Elf_Rela)));
100 dump_Elf_Rela(obj, obj->pltrela, obj->pltrelasize);
105 dump_Elf_Rel (Obj_Entry *obj, const Elf_Rel *rel0, u_long relsize)
108 const Elf_Rel *rellim;
112 rtld_putstr(rel_header);
113 rellim = (const Elf_Rel *)((const char *)rel0 + relsize);
114 for (rel = rel0; rel < rellim; rel++) {
115 dstaddr = (Elf_Addr *)(obj->relocbase + rel->r_offset);
116 sym = obj->symtab + ELF_R_SYM(rel->r_info);
117 rtld_printf(rel_format,
118 obj->strtab + sym->st_name,
119 (u_long)rel->r_info, (u_long)rel->r_offset,
120 (u_long)sym->st_value, (int)sym->st_size,
121 dstaddr, (u_long)*dstaddr);
127 dump_Elf_Rela (Obj_Entry *obj, const Elf_Rela *rela0, u_long relasize)
129 const Elf_Rela *rela;
130 const Elf_Rela *relalim;
134 rtld_putstr(rel_header);
135 relalim = (const Elf_Rela *)((const char *)rela0 + relasize);
136 for (rela = rela0; rela < relalim; rela++) {
137 dstaddr = (Elf_Addr *)(obj->relocbase + rela->r_offset);
138 sym = obj->symtab + ELF_R_SYM(rela->r_info);
139 rtld_printf(rel_format,
140 obj->strtab + sym->st_name,
141 (u_long)rela->r_info, (u_long)rela->r_offset,
142 (u_long)sym->st_value, (int)sym->st_size,
143 dstaddr, (u_long)*dstaddr);