Improved the basic support of Dwarf information.

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 */