/*  *	HT Editor *	htelfrel.cc * *	Copyright (C) 1999-2002 Stefan Weyergraf * *	This program is free software; you can redistribute it and/or modify *	it under the terms of the GNU General Public License version 2 as *	published by the Free Software Foundation. * *	This program is distributed in the hope that it will be useful, *	but WITHOUT ANY WARRANTY; without even the implied warranty of *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the *	GNU General Public License for more details. * *	You should have received a copy of the GNU General Public License *	along with this program; if not, write to the Free Software *	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */#include "elfstruc.h"#include "atom.h"#include "htelf.h"#include "htelfrel.h"#include "httag.h"#include "formats.h"#include "snprintf.h"#include <stdlib.h>static int_hash elf_r_386_type[] ={	{ELF_R_386_NONE,		"ELF_R_386_NONE"},	{ELF_R_386_32,			"ELF_R_386_32"},	{ELF_R_386_PC32,		"ELF_R_386_PC32"},	{ELF_R_386_GOT32,		"ELF_R_386_GOT32"},	{ELF_R_386_PLT32,		"ELF_R_386_PLT32"},	{ELF_R_386_COPY,		"ELF_R_386_COPY"},	{ELF_R_386_GLOB_DAT,		"ELF_R_386_GLOB_DAT"},	{ELF_R_386_JMP_SLOT,		"ELF_R_386_JMP_SLOT"},	{ELF_R_386_RELATIVE,		"ELF_R_386_RELATIVE"},	{ELF_R_386_GOTOFF,		"ELF_R_386_GOTOFF"},	{ELF_R_386_GOTPC,		"ELF_R_386_GOTPC"},	{0, 0}};static ht_view *htelfreloctable_init(Bounds *b, File *file, ht_format_group *group){	ht_elf_shared_data *elf_shared=(ht_elf_shared_data *)group->get_shared_data();	if (elf_shared->ident.e_ident[ELF_EI_CLASS] != ELFCLASS32	    || elf_shared->ident.e_ident[ELF_EI_DATA] != ELFDATA2LSB	    || elf_shared->header32.e_machine != ELF_EM_386) return NULL;		uint skip = elf_shared->reloctables;	uint reloctab_shidx = ELF_SHN_UNDEF;	uint reloctab_sh_type = ELF_SHT_NULL;	for (uint i=1; i<elf_shared->sheaders.count; i++) {		if ((elf_shared->sheaders.sheaders32[i].sh_type==ELF_SHT_REL) || (elf_shared->sheaders.sheaders32[i].sh_type==ELF_SHT_RELA)) {			if (!skip--) {				reloctab_sh_type=elf_shared->sheaders.sheaders32[i].sh_type;				reloctab_shidx=i;				break;			}		}	}	if (!isValidELFSectionIdx(elf_shared, reloctab_shidx)) return NULL;	FileOfs h = elf_shared->sheaders.sheaders32[reloctab_shidx].sh_offset;		/* section index of associated symbol table */	int si_symbol = elf_shared->sheaders.sheaders32[reloctab_shidx].sh_link;		/* section index of section to be relocated */	int si_dest = elf_shared->sheaders.sheaders32[reloctab_shidx].sh_info;	String reloctab_name("?");	if (isValidELFSectionIdx(elf_shared, elf_shared->header32.e_shstrndx)) {		file->seek(elf_shared->sheaders.sheaders32[elf_shared->header32.e_shstrndx].sh_offset			+ elf_shared->sheaders.sheaders32[reloctab_shidx].sh_name);		file->readStringz(reloctab_name);	}	char desc[128];	ht_snprintf(desc, sizeof desc, DESC_ELF_RELOCTAB, &reloctab_name, reloctab_shidx);		ht_uformat_viewer *v = new ht_uformat_viewer();	v->init(b, desc, VC_EDIT, file, group);		ht_mask_sub *m = new ht_mask_sub();	m->init(file, 0);		registerAtom(ATOM_ELF_R_386_TYPE, elf_r_386_type);	char t[256];	ht_snprintf(t, sizeof t, "* ELF relocation table at offset %08qx, relocates section %d, symtab %d", h, si_dest, si_symbol);	m->add_mask(t);	bool elf_bigendian = (elf_shared->ident.e_ident[ELF_EI_DATA] == ELFDATA2MSB);#define tt_end sizeof t - (tt-t)	switch (reloctab_sh_type) {		case ELF_SHT_REL: {			m->add_mask("destofs  symidx type");			uint relnum=elf_shared->sheaders.sheaders32[reloctab_shidx].sh_size / sizeof (ELF_REL32);			for (uint i=0; i<relnum; i++) {				char *tt = t;				/* dest offset */				tt = tag_make_edit_dword(tt, tt_end, h+i*sizeof (ELF_REL32), elf_bigendian ? tag_endian_big : tag_endian_little);				tt += ht_snprintf(tt, tt_end, " ");								/* symbol (table idx) */				tt = tag_make_edit_word(tt, tt_end, h+i*sizeof (ELF_REL32)+4+1, elf_bigendian ? tag_endian_big : tag_endian_little);				tt += ht_snprintf(tt, tt_end, "   ");				/* type */				tt = tag_make_edit_byte(tt, tt_end, h+i*sizeof (ELF_REL32)+4);				tt += ht_snprintf(tt, tt_end, "(");				/* type */				tt = tag_make_desc_byte(tt, tt_end, h+i*sizeof (ELF_REL32)+4, ATOM_ELF_R_386_TYPE);				tt += ht_snprintf(tt, tt_end, ")");				m->add_mask(t);			}			break;		}		case ELF_SHT_RELA: {			m->add_mask("destofs  symidx addend   type");			uint relnum  =elf_shared->sheaders.sheaders32[reloctab_shidx].sh_size / sizeof (ELF_RELA32);			for (uint i=0; i<relnum; i++) {				char *tt = t;				/* dest offset */				tt = tag_make_edit_dword(tt, tt_end, h+i*sizeof (ELF_RELA32), elf_bigendian ? tag_endian_big : tag_endian_little);				tt += ht_snprintf(tt, tt_end, " ");				/* symbol (table idx) */				tt = tag_make_edit_word(tt, tt_end, h+i*sizeof (ELF_RELA32)+4+1, elf_bigendian ? tag_endian_big : tag_endian_little);				tt += ht_snprintf(tt, tt_end, "   ");				/* addend */				tt = tag_make_edit_dword(tt, tt_end, h+i*sizeof (ELF_RELA32)+4+4, elf_bigendian ? tag_endian_big : tag_endian_little);				tt += ht_snprintf(tt, tt_end, " ");				/* type */				tt = tag_make_edit_byte(tt, tt_end, h+i*sizeof (ELF_RELA32)+4);				tt += ht_snprintf(tt, tt_end, "(");				/* type */				tt = tag_make_desc_byte(tt, tt_end, h+i*sizeof (ELF_RELA32)+4, ATOM_ELF_R_386_TYPE);				tt += ht_snprintf(tt, tt_end, ")");				m->add_mask(t);			}			break;		}	}		v->insertsub(m);	return v;}format_viewer_if htelfreloctable_if = {	htelfreloctable_init,	0};