134192Sjdp/*- 234192Sjdp * Copyright 1996-1998 John D. Polstra. 334192Sjdp * All rights reserved. 434192Sjdp * 534192Sjdp * Redistribution and use in source and binary forms, with or without 634192Sjdp * modification, are permitted provided that the following conditions 734192Sjdp * are met: 834192Sjdp * 1. Redistributions of source code must retain the above copyright 934192Sjdp * notice, this list of conditions and the following disclaimer. 1034192Sjdp * 2. Redistributions in binary form must reproduce the above copyright 1134192Sjdp * notice, this list of conditions and the following disclaimer in the 1234192Sjdp * documentation and/or other materials provided with the distribution. 1334192Sjdp * 1434192Sjdp * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 1534192Sjdp * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 1634192Sjdp * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 1734192Sjdp * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 1834192Sjdp * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 1934192Sjdp * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2034192Sjdp * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2134192Sjdp * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2234192Sjdp * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2334192Sjdp * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2434192Sjdp * 2550476Speter * $FreeBSD$ 2634192Sjdp */ 2734192Sjdp 2834192Sjdp/* 2934192Sjdp * Support for printing debugging messages. 3034192Sjdp */ 3134192Sjdp 3234192Sjdp#include <stdarg.h> 3334192Sjdp#include <stdio.h> 3434192Sjdp 3534192Sjdp#include "debug.h" 36116563Smdodd#include "rtld.h" 37225152Skib#include "rtld_printf.h" 3834192Sjdp 39116563Smdoddstatic const char rel_header[] = 40116563Smdodd " symbol name r_info r_offset st_value st_size address value\n" 41116563Smdodd " ------------------------------------------------------------------------------\n"; 42116582Smdoddstatic const char rel_format[] = " %-25s %6lx %08lx %08lx %7d %10p %08lx\n"; 43116563Smdodd 4434192Sjdpint debug = 0; 4534192Sjdp 4634192Sjdpvoid 4734192Sjdpdebug_printf(const char *format, ...) 4834192Sjdp{ 4934192Sjdp if (debug) { 5034192Sjdp va_list ap; 5134192Sjdp va_start(ap, format); 5234192Sjdp 53225152Skib rtld_vfdprintf(STDERR_FILENO, format, ap); 54225152Skib rtld_fdputchar(STDERR_FILENO, '\n'); 5534192Sjdp 5634192Sjdp va_end(ap); 5734192Sjdp } 5834192Sjdp} 59116563Smdodd 60116563Smdoddvoid 61116563Smdodddump_relocations (Obj_Entry *obj0) 62116563Smdodd{ 63116563Smdodd Obj_Entry *obj; 64116563Smdodd 65296727Skib for (obj = globallist_curr(obj0); obj != NULL; 66296727Skib obj = globallist_next(obj)) { 67116563Smdodd dump_obj_relocations(obj); 68116563Smdodd } 69116563Smdodd} 70116563Smdodd 71116563Smdoddvoid 72116563Smdodddump_obj_relocations (Obj_Entry *obj) 73116563Smdodd{ 74116563Smdodd 75225152Skib rtld_printf("Object \"%s\", relocbase %p\n", obj->path, obj->relocbase); 76116563Smdodd 77116563Smdodd if (obj->relsize) { 78225152Skib rtld_printf("Non-PLT Relocations: %ld\n", 79116563Smdodd (obj->relsize / sizeof(Elf_Rel))); 80116563Smdodd dump_Elf_Rel(obj, obj->rel, obj->relsize); 81116563Smdodd } 82116563Smdodd 83116563Smdodd if (obj->relasize) { 84225152Skib rtld_printf("Non-PLT Relocations with Addend: %ld\n", 85116563Smdodd (obj->relasize / sizeof(Elf_Rela))); 86116563Smdodd dump_Elf_Rela(obj, obj->rela, obj->relasize); 87116563Smdodd } 88116563Smdodd 89116563Smdodd if (obj->pltrelsize) { 90225152Skib rtld_printf("PLT Relocations: %ld\n", 91116563Smdodd (obj->pltrelsize / sizeof(Elf_Rel))); 92116563Smdodd dump_Elf_Rel(obj, obj->pltrel, obj->pltrelsize); 93116563Smdodd } 94116563Smdodd 95116563Smdodd if (obj->pltrelasize) { 96225152Skib rtld_printf("PLT Relocations with Addend: %ld\n", 97116563Smdodd (obj->pltrelasize / sizeof(Elf_Rela))); 98116563Smdodd dump_Elf_Rela(obj, obj->pltrela, obj->pltrelasize); 99116563Smdodd } 100116563Smdodd} 101116563Smdodd 102116563Smdoddvoid 103116563Smdodddump_Elf_Rel (Obj_Entry *obj, const Elf_Rel *rel0, u_long relsize) 104116563Smdodd{ 105116563Smdodd const Elf_Rel *rel; 106116563Smdodd const Elf_Rel *rellim; 107116563Smdodd const Elf_Sym *sym; 108116563Smdodd Elf_Addr *dstaddr; 109116563Smdodd 110225152Skib rtld_putstr(rel_header); 111116582Smdodd rellim = (const Elf_Rel *)((const char *)rel0 + relsize); 112116563Smdodd for (rel = rel0; rel < rellim; rel++) { 113116563Smdodd dstaddr = (Elf_Addr *)(obj->relocbase + rel->r_offset); 114116563Smdodd sym = obj->symtab + ELF_R_SYM(rel->r_info); 115225152Skib rtld_printf(rel_format, 116116563Smdodd obj->strtab + sym->st_name, 117116582Smdodd (u_long)rel->r_info, (u_long)rel->r_offset, 118116582Smdodd (u_long)sym->st_value, (int)sym->st_size, 119116582Smdodd dstaddr, (u_long)*dstaddr); 120116563Smdodd } 121116563Smdodd return; 122116563Smdodd} 123116563Smdodd 124116563Smdoddvoid 125116563Smdodddump_Elf_Rela (Obj_Entry *obj, const Elf_Rela *rela0, u_long relasize) 126116563Smdodd{ 127116563Smdodd const Elf_Rela *rela; 128116563Smdodd const Elf_Rela *relalim; 129116563Smdodd const Elf_Sym *sym; 130116563Smdodd Elf_Addr *dstaddr; 131116563Smdodd 132225152Skib rtld_putstr(rel_header); 133116582Smdodd relalim = (const Elf_Rela *)((const char *)rela0 + relasize); 134116563Smdodd for (rela = rela0; rela < relalim; rela++) { 135116563Smdodd dstaddr = (Elf_Addr *)(obj->relocbase + rela->r_offset); 136116563Smdodd sym = obj->symtab + ELF_R_SYM(rela->r_info); 137225152Skib rtld_printf(rel_format, 138116563Smdodd obj->strtab + sym->st_name, 139116582Smdodd (u_long)rela->r_info, (u_long)rela->r_offset, 140116582Smdodd (u_long)sym->st_value, (int)sym->st_size, 141116582Smdodd dstaddr, (u_long)*dstaddr); 142116563Smdodd } 143116563Smdodd return; 144116563Smdodd} 145