Reorganized the ELF header (32 or 64 bits).

git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@148 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a

1 files changed, 96 insertions, 0 deletions

diff --git a/src/format/elf/program.c b/src/format/elf/program.c
new file mode 100644
index 0000000..f55b7c7
--- /dev/null
+++ b/src/format/elf/program.c
@@ -0,0 +1,96 @@
+
+/* OpenIDA - Outil d'analyse de fichiers binaires
+ * program.c - gestion des en-têtes de programme d'un ELF
+ *
+ * Copyright (C) 2010 Cyrille Bagard
+ *
+ *  This file is part of OpenIDA.
+ *
+ *  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 "program.h"
+
+
+#include "elf-int.h"
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : format  = description de l'exécutable à consulter.           *
+*                index   = indice de la section recherchée.                   *
+*                program = ensemble d'informations à faire remonter. [OUT]    *
+*                                                                             *
+*  Description : Recherche un programme donné au sein de binaire par indice.  *
+*                                                                             *
+*  Retour      : Bilan de l'opération.                                        *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool find_elf_program_by_index(const GElfFormat *format, uint16_t index, elf_phdr *program)
+{
+    off_t offset;                           /* Emplacement à venir lire    */
+
+    if (index >= ELF_HDR(format, format->header, e_phnum)) return false;
+
+    offset = ELF_HDR(format, format->header, e_phoff)
+        + ELF_HDR(format, format->header, e_phentsize) * index;
+
+    return read_elf_program_header(format, &offset, program);
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : format  = description de l'exécutable à consulter.           *
+*                addr    = adresse virtuelle à retrouver.                     *
+*                pos     = position correspondante. [OUT]                     *
+*                                                                             *
+*  Description : Fournit la position correspondant à une adresse virtuelle.   *
+*                                                                             *
+*  Retour      : Bilan de l'opération.                                        *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool translate_address_into_offset_using_elf_programs(const GElfFormat *format, vmpa_t addr, off_t *pos)
+{
+    bool result;                            /* Bilan à retourner           */
+    uint16_t i;                             /* Boucle de parcours          */
+    elf_phdr program;                       /* Programme à analyser        */
+
+    result = false;
+
+    for (i = 0; i < ELF_HDR(format, format->header, e_phnum) && !result; i++)
+    {
+        find_elf_program_by_index(format, i, &program);
+
+        if (ELF_PHDR(format, program, p_vaddr) <= addr
+            && addr < (ELF_PHDR(format, program, p_vaddr) + ELF_PHDR(format, program, p_filesz)))
+        {
+            *pos = ELF_PHDR(format, program, p_offset) + addr - ELF_PHDR(format, program, p_vaddr);
+            result = true;
+        }
+
+    }
+
+    return result;
+
+}