diff options
Diffstat (limited to 'src/format/dwarf/v2')
| -rw-r--r-- | src/format/dwarf/v2/Makefile.am | 3 | ||||
| -rw-r--r-- | src/format/dwarf/v2/dwarf.c | 8 | ||||
| -rw-r--r-- | src/format/dwarf/v2/form.c | 272 | ||||
| -rw-r--r-- | src/format/dwarf/v2/form.h | 39 |
4 files changed, 321 insertions, 1 deletions
diff --git a/src/format/dwarf/v2/Makefile.am b/src/format/dwarf/v2/Makefile.am index 54e7719..04dee14 100644 --- a/src/format/dwarf/v2/Makefile.am +++ b/src/format/dwarf/v2/Makefile.am @@ -2,7 +2,8 @@ noinst_LTLIBRARIES = libformatdwarfv2.la libformatdwarfv2_la_SOURCES = \ - dwarf.h dwarf.c + dwarf.h dwarf.c \ + form.h form.c libformatdwarfv2_la_LDFLAGS = $(LIBGTK_LIBS) diff --git a/src/format/dwarf/v2/dwarf.c b/src/format/dwarf/v2/dwarf.c index 73e4e04..ccef01f 100644 --- a/src/format/dwarf/v2/dwarf.c +++ b/src/format/dwarf/v2/dwarf.c @@ -27,6 +27,9 @@ #include "../dwarf-int.h" +#include "form.h" + + /* Format de débogage DWARF v2 (instance) */ struct _GDwarfV2Format @@ -76,12 +79,17 @@ G_DEFINE_TYPE(GDwarfV2Format, g_dwarfv2_format, G_TYPE_DWARF_FORMAT); static void g_dwarfv2_format_class_init(GDwarfV2FormatClass *klass) { GObjectClass *object; /* Autre version de la classe */ + GDwarfFormatClass *dwarf; /* Version parente de la classe*/ object = G_OBJECT_CLASS(klass); object->dispose = (GObjectFinalizeFunc/* ! */)g_dwarfv2_format_dispose; object->finalize = (GObjectFinalizeFunc)g_dwarfv2_format_finalize; + dwarf = G_DWARF_FORMAT_CLASS(klass); + + dwarf->read_form = (read_form_value_fc)read_dwarf_v2_form_value; + } diff --git a/src/format/dwarf/v2/form.c b/src/format/dwarf/v2/form.c new file mode 100644 index 0000000..8a16887 --- /dev/null +++ b/src/format/dwarf/v2/form.c @@ -0,0 +1,272 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * form.c - chargement en mémoire des valeurs d'attributs + * + * Copyright (C) 2015 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * OpenIDA is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * OpenIDA 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 Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#include "form.h" + + +#include "../dwarf-int.h" + + + +/****************************************************************************** +* * +* Paramètres : format = contenu binaire de débogage à parcourir. * +* cu = unité de compilation parente. * +* form = nature de la valeur à lire. * +* pos = tête de lecture au sein des données. [OUT] * +* value = valeur au format donné lue. [OUT] * +* * +* Description : Lit la valeur correspondant à un type donné. * +* * +* Retour : Bilan de l'opération. * +* * +* Remarques : - * +* * +******************************************************************************/ + +bool read_dwarf_v2_form_value(const GDwarfFormat *format, const dw_compil_unit_header *cu, DwarfForm form, vmpa2t *pos, dw_v2_form_value *value) +{ + bool result; /* Bilan de lecture à renvoyer */ + GBinContent *content; /* Contenu binaire à parcourir */ + SourceEndian endian; /* Boutisme des enregistrements*/ + GExeFormat *exe; /* Format d'exécutable rattaché*/ + const bin_t *tmp; /* Données quelconques */ + uint8_t tmp8; /* Données sur 8 bits */ + uint16_t tmp16; /* Données sur 16 bits */ + uint32_t tmp32; /* Données sur 32 bits */ + uint64_t tmp64; /* Données sur 64 bits */ + uleb128_t tmpuleb; /* Données sur xxx bits */ + phys_t offset; /* Décalage à appliquer */ + mrange_t range; /* Couverture d'une section */ + vmpa2t iter; /* Point de lecture parallèle */ + + content = G_BIN_FORMAT(format)->content; + endian = g_binary_format_get_endianness(G_BIN_FORMAT(format)); + exe = G_DBG_FORMAT(format)->executable; + + switch (form) + { + case DW_FORM_addr: + + switch (cu->address_size) + { + case 2: + result = g_binary_content_read_u16(content, pos, endian, &tmp16); + if (result) value->address = tmp16; + break; + case 4: + result = g_binary_content_read_u32(content, pos, endian, &tmp32); + if (result) value->address = tmp32; + break; + case 8: + result = g_binary_content_read_u64(content, pos, endian, &tmp64); + if (result) value->address = tmp64; + break; + default: + result = false; + break; + } + break; + + case DW_FORM_block2: + result = g_binary_content_read_u16(content, pos, endian, &tmp16); + if (result) + { + value->block.size = tmp16; + goto block_finish; + } + break; + + case DW_FORM_block4: + result = g_binary_content_read_u32(content, pos, endian, &tmp32); + if (result) + { + value->block.size = tmp32; + goto block_finish; + } + break; + + case DW_FORM_data2: + result = g_binary_content_read_u16(content, pos, endian, &value->data2); + break; + + case DW_FORM_data4: + result = g_binary_content_read_u32(content, pos, endian, &value->data4); + break; + + case DW_FORM_data8: + result = g_binary_content_read_u64(content, pos, endian, &value->data8); + break; + + case DW_FORM_string: + + tmp = g_binary_content_get_raw_access(content, pos, 1); + result = (tmp != NULL); + + if (result) + { + value->string = (const char *)tmp; + + while (result && *tmp != '\0') + { + tmp = g_binary_content_get_raw_access(content, pos, 1); + result = (tmp != NULL); + } + + } + + break; + + case DW_FORM_block: + + tmpuleb = 0; /* Pour GCC */ + + result = g_binary_content_read_uleb128(content, pos, &tmpuleb); + if (!result) break; + + value->block.size = tmpuleb; + + block_finish: + + value->block.start = g_binary_content_get_raw_access(content, pos, value->block.size); + + result = (value->block.start != NULL); + break; + + case DW_FORM_block1: + result = g_binary_content_read_u8(content, pos, &tmp8); + if (result) + { + value->block.size = tmp8; + goto block_finish; + } + break; + + case DW_FORM_data1: + result = g_binary_content_read_u8(content, pos, &value->data1); + break; + + case DW_FORM_flag: + result = g_binary_content_read_u8(content, pos, &value->flag); + break; + + case DW_FORM_sdata: + result = g_binary_content_read_leb128(content, pos, &value->sdata); + break; + + case DW_FORM_strp: + + /* Définition des positions */ + + if (cu->is_32b) + { + result = g_binary_content_read_u32(content, pos, endian, &tmp32); + offset = tmp32; + } + else + { + result = g_binary_content_read_u64(content, pos, endian, &tmp64); + offset = tmp64; + } + + /* Lecture dans la section adaptée */ + + if (result) + result = g_exe_format_get_section_range_by_name(exe, ".debug_str", &range); + + if (result) + { + copy_vmpa(&iter, get_mrange_addr(&range)); + advance_vmpa(&iter, offset); + + tmp = g_binary_content_get_raw_access(content, &iter, 1); + result = (tmp != NULL); + + if (result) + { + value->string = (const char *)tmp; + + while (result && *tmp != '\0') + { + tmp = g_binary_content_get_raw_access(content, &iter, 1); + result = (tmp != NULL); + } + + } + + } + + break; + + case DW_FORM_udata: + result = g_binary_content_read_uleb128(content, pos, &value->udata); + break; + + + + + + + + + + + + case DW_FORM_ref1: + result = g_binary_content_read_u8(content, pos, &value->ref1); + break; + + case DW_FORM_ref2: + result = g_binary_content_read_u16(content, pos, endian, &value->ref2); + break; + + case DW_FORM_ref4: + result = g_binary_content_read_u32(content, pos, endian, &value->ref4); + break; + + case DW_FORM_ref8: + result = g_binary_content_read_u64(content, pos, endian, &value->ref8); + break; + + case DW_FORM_ref_udata: + result = g_binary_content_read_uleb128(content, pos, &value->ref_udata); + break; + + + + + + + + + + + default: + result = false; + break; + + } + + return result; + +} diff --git a/src/format/dwarf/v2/form.h b/src/format/dwarf/v2/form.h new file mode 100644 index 0000000..f88001b --- /dev/null +++ b/src/format/dwarf/v2/form.h @@ -0,0 +1,39 @@ + +/* Chrysalide - Outil d'analyse de fichiers binaires + * form.h - prototypes pour le chargement en mémoire des valeurs d'attributs + * + * Copyright (C) 2015 Cyrille Bagard + * + * This file is part of Chrysalide. + * + * OpenIDA is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * OpenIDA 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 Foobar. If not, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef _FORMAT_DWARF_V2_FORM_H +#define _FORMAT_DWARF_V2_FORM_H + + +#include "../dwarf.h" +#include "../dwarf_def.h" +#include "../../../analysis/content.h" + + + +/* Lit la valeur correspondant à un type donné. */ +bool read_dwarf_v2_form_value(const GDwarfFormat *, const dw_compil_unit_header *, DwarfForm, vmpa2t *, dw_v2_form_value *); + + + +#endif /* _FORMAT_DWARF_V2_FORM_H */ |