diff options
Diffstat (limited to 'src/format/dwarf/v4')
| -rw-r--r-- | src/format/dwarf/v4/Makefile.am | 3 | ||||
| -rw-r--r-- | src/format/dwarf/v4/dwarf.c | 16 | ||||
| -rw-r--r-- | src/format/dwarf/v4/form.c | 106 | ||||
| -rw-r--r-- | src/format/dwarf/v4/form.h | 39 |
4 files changed, 160 insertions, 4 deletions
diff --git a/src/format/dwarf/v4/Makefile.am b/src/format/dwarf/v4/Makefile.am index fb3bc43..b0c9719 100644 --- a/src/format/dwarf/v4/Makefile.am +++ b/src/format/dwarf/v4/Makefile.am @@ -2,7 +2,8 @@ noinst_LTLIBRARIES = libformatdwarfv4.la libformatdwarfv4_la_SOURCES = \ - dwarf.h dwarf.c + dwarf.h dwarf.c \ + form.h form.c libformatdwarfv4_la_LDFLAGS = $(LIBGTK_LIBS) diff --git a/src/format/dwarf/v4/dwarf.c b/src/format/dwarf/v4/dwarf.c index 164d321..52345e8 100644 --- a/src/format/dwarf/v4/dwarf.c +++ b/src/format/dwarf/v4/dwarf.c @@ -27,6 +27,9 @@ #include "../dwarf-int.h" +#include "form.h" + + /* Format de débogage DWARF v4 (instance) */ struct _GDwarfV4Format @@ -76,12 +79,17 @@ G_DEFINE_TYPE(GDwarfV4Format, g_dwarfv4_format, G_TYPE_DWARF_FORMAT); static void g_dwarfv4_format_class_init(GDwarfV4FormatClass *klass) { GObjectClass *object; /* Autre version de la classe */ + GDwarfFormatClass *dwarf; /* Version parente de la classe*/ object = G_OBJECT_CLASS(klass); object->dispose = (GObjectFinalizeFunc/* ! */)g_dwarfv4_format_dispose; object->finalize = (GObjectFinalizeFunc)g_dwarfv4_format_finalize; + dwarf = G_DWARF_FORMAT_CLASS(klass); + + dwarf->read_form = (read_form_value_fc)read_dwarf_v4_form_value; + } @@ -160,11 +168,13 @@ GBinFormat *g_dwarfv4_format_new(GBinContent *content, GExeFormat *parent) result = g_object_new(G_TYPE_DWARFV4_FORMAT, NULL); - - g_binary_format_set_content(G_BIN_FORMAT(result), content); - + if (!g_dwarf_format_load(G_DWARF_FORMAT(result), parent)) + { + g_object_unref(G_OBJECT(result)); + result = NULL; + } return G_BIN_FORMAT(result); diff --git a/src/format/dwarf/v4/form.c b/src/format/dwarf/v4/form.c new file mode 100644 index 0000000..fffc0c3 --- /dev/null +++ b/src/format/dwarf/v4/form.c @@ -0,0 +1,106 @@ + +/* 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" +#include "../v2/form.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_v4_form_value(const GDwarfFormat *format, const dw_compil_unit_header *cu, DwarfForm form, vmpa2t *pos, dw_v4_form_value *value) +{ + bool result; /* Bilan de lecture à renvoyer */ + GBinContent *content; /* Contenu binaire à parcourir */ + SourceEndian endian; /* Boutisme des enregistrements*/ + uint32_t tmp32; /* Données sur 32 bits */ + uint64_t tmp64; /* Données sur 64 bits */ + uleb128_t tmpuleb; /* Données sur xxx bits */ + + content = G_BIN_FORMAT(format)->content; + endian = g_binary_format_get_endianness(G_BIN_FORMAT(format)); + + switch (form) + { + case DW_FORM_sec_offset: + + if (cu->is_32b) + { + result = g_binary_content_read_u32(content, pos, endian, &tmp32); + tmp64 = tmp32; + } + else + result = g_binary_content_read_u64(content, pos, endian, &tmp64); + + value->sec_offset = tmp64; + break; + + case DW_FORM_exprloc: + + tmpuleb = 0; /* Pour GCC */ + + result = g_binary_content_read_uleb128(content, pos, &tmpuleb); + if (!result) break; + + value->expr.size = tmpuleb; + + value->expr.start = g_binary_content_get_raw_access(content, pos, value->expr.size); + result = (value->expr.start != NULL); + + break; + + case DW_FORM_flag_present: + result = true; + value->has_flag = true; + break; + + case DW_FORM_ref_sig8: + result = g_binary_content_read_u64(content, pos, endian, &value->signature); + break; + + default: + result = read_dwarf_v2_form_value(format, cu, form, pos, &value->v2); + break; + + } + + return result; + +} diff --git a/src/format/dwarf/v4/form.h b/src/format/dwarf/v4/form.h new file mode 100644 index 0000000..ac36142 --- /dev/null +++ b/src/format/dwarf/v4/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_V4_FORM_H +#define _FORMAT_DWARF_V4_FORM_H + + +#include "../dwarf.h" +#include "../dwarf_def.h" +#include "../../../analysis/content.h" + + + +/* Lit la valeur correspondant à un type donné. */ +bool read_dwarf_v4_form_value(const GDwarfFormat *, const dw_compil_unit_header *, DwarfForm, vmpa2t *, dw_v4_form_value *); + + + +#endif /* _FORMAT_DWARF_V4_FORM_H */ |