Provided found MIPS routines.

git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@69 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a

7 files changed, 215 insertions, 13 deletions

diff --git a/src/format/elf/Makefile.am b/src/format/elf/Makefile.am
index ce23fb4..fa481ca 100644
--- a/src/format/elf/Makefile.am
+++ b/src/format/elf/Makefile.am
@@ -1,9 +1,10 @@
 
 noinst_LTLIBRARIES = libformatelf.la
 
-libformatelf_la_SOURCES =				 \
+libformatelf_la_SOURCES =				\
 	e_elf.h e_elf.c						\
 	elf-int.h							\
+	helper_mips.h helper_mips.c			\
 	section.h section.c					\
 	strings.h strings.c					\
 	symbol.h symbol.c
diff --git a/src/format/elf/e_elf.c b/src/format/elf/e_elf.c
index 373df2b..1de4ac0 100644
--- a/src/format/elf/e_elf.c
+++ b/src/format/elf/e_elf.c
@@ -204,15 +204,15 @@ elf_format *load_elf(const uint8_t *content, off_t length)
 
     test = read_elf_section_names(result);
 
-    printf("ok ? %d\n", test);
+    printf("section names ok ? %d\n", test);
 
     test = find_all_elf_strings(result);
 
-    printf("ok ? %d\n", test);
+    printf("strings ok ? %d\n", test);
 
     test = load_elf_symbols(result);
 
-    printf("ok ? %d\n", test);
+    printf("symbols ok ? %d\n", test);
 
 
 
@@ -326,6 +326,18 @@ bin_part **get_elf_default_code_parts(const elf_format *format, size_t *count)
 
         }
 
+        if (find_elf_section_content_by_name(format, ".MIPS.stubs", &offset, &size, &voffset))
+        {
+            part = create_bin_part();
+
+            set_bin_part_name(part, ".MIPS.stubs");
+            set_bin_part_values(part, offset, size, voffset);
+
+            result = (bin_part **)realloc(result, ++(*count) * sizeof(bin_part *));
+            result[*count - 1] = part;
+
+        }
+
         if (find_elf_section_content_by_name(format, ".init", &offset, &size, &voffset))
         {
             part = create_bin_part();
@@ -583,16 +595,16 @@ GBinRoutine **get_all_elf_routines(const elf_format *format, size_t *count)
 
     result = (GBinRoutine **)calloc(format->sym_count, sizeof(GBinRoutine *));
     *count = format->sym_count;
-    /*
+
     for (i = 0; i < format->sym_count; i++)
     {
-        result[i] = create_binary_routine();
+        result[i] = g_binary_routine_new();
 
-        set_binary_routine_offset(result[i], format->symbols[i].address);
-        set_binary_routine_name(result[i], strdup(format->symbols[i].name));
+        g_binary_routine_set_address(result[i], format->symbols[i].address);
+        g_binary_routine_set_name(result[i], strdup(format->symbols[i].name));
 
     }
-    */
+
     return result;
 
 }
diff --git a/src/format/elf/elf-int.h b/src/format/elf/elf-int.h
index 4ee3a08..dd8909d 100644
--- a/src/format/elf/elf-int.h
+++ b/src/format/elf/elf-int.h
@@ -117,6 +117,7 @@ typedef union _Elf_Sym
 #define ELF_SYM(fmt, sb, fld) (fmt->is_32b ? sb.sym32.fld : sb.sym64.fld)
 
 
+#define ELF_ST_TYPE ELF32_ST_TYPE
 
 
 
diff --git a/src/format/elf/helper_mips.c b/src/format/elf/helper_mips.c
new file mode 100644
index 0000000..b56db5d
--- /dev/null
+++ b/src/format/elf/helper_mips.c
@@ -0,0 +1,85 @@
+
+/* OpenIDA - Outil d'analyse de fichiers binaires
+ * helper_mips.c - gestion auxiliaire de l'architecture MIPS
+ *
+ * Copyright (C) 2009 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 "helper_mips.h"
+
+
+#include <string.h>
+
+
+#include "elf-int.h"
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : format    = description de l'exécutable à compléter.         *
+*                dyn_start = début des informations dynamiques associées.     *
+*                dyn_size  = taille de la zone associée.                      *
+*                str_start = début de la zone de chaîne de caractères.        *
+*                str_size  = taille de la zone de chaînes de caractères.      *
+*                                                                             *
+*  Description : Déduit les adresses effectives des appels externes.          *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool g_elf_format_find_mips_dynamic_symbols(elf_format *format, off_t dyn_start, off_t dyn_size, off_t str_start, off_t str_size)
+{
+    off_t iter;                             /* Boucle de parcours          */
+    Elf_Sym symbol;                         /* Symbole ELF lu              */
+    off_t name_pos;                         /* Localisation du nom         */
+
+    if (dyn_size % ELF_SIZEOF_SYM(format) != 0) return false;
+
+    for (iter = dyn_start; iter < (dyn_start + dyn_size); iter += ELF_SIZEOF_SYM(format))
+    {
+        memcpy(&symbol, &EXE_FORMAT(format)->content[iter], ELF_SIZEOF_SYM(format));
+
+        if (ELF_ST_TYPE(ELF_SYM(format, symbol, st_info)) != STT_FUNC) continue;
+
+        if (ELF_SYM(format, symbol, st_value) == 0) continue;
+
+        name_pos = ELF_SYM(format, symbol, st_name);
+
+        /* Sécurité anti-débordements */
+        if (name_pos >= str_size) continue;
+
+        /* Si le symbole possède un nom... */
+        if (strlen(&EXE_FORMAT(format)->content[str_start + name_pos]) > 0)
+        {
+            format->symbols = (elf_symbol *)realloc(format->symbols, ++format->sym_count * sizeof(elf_symbol));
+
+            format->symbols[format->sym_count - 1].name = &EXE_FORMAT(format)->content[str_start + name_pos];
+            format->symbols[format->sym_count - 1].address = ELF_SYM(format, symbol, st_value);
+
+        }
+
+    }
+
+    return true;
+
+}
diff --git a/src/format/elf/helper_mips.h b/src/format/elf/helper_mips.h
new file mode 100644
index 0000000..6a26e03
--- /dev/null
+++ b/src/format/elf/helper_mips.h
@@ -0,0 +1,41 @@
+
+/* OpenIDA - Outil d'analyse de fichiers binaires
+ * helper_mips.h - prototypes pour la gestion auxiliaire de l'architecture MIPS
+ *
+ * Copyright (C) 2009 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/>.
+ */
+
+
+#ifndef _FORMAT_ELF_HELPER_MIPS_H
+#define _FORMAT_ELF_HELPER_MIPS_H
+
+
+#include <stdbool.h>
+#include <sys/types.h>
+
+
+#include "e_elf.h"
+
+
+
+/* Déduit les adresses effectives des appels externes. */
+bool g_elf_format_find_mips_dynamic_symbols(elf_format *, off_t, off_t, off_t, off_t);
+
+
+
+#endif  /* _FORMAT_ELF_HELPER_MIPS_H */
diff --git a/src/format/elf/section.c b/src/format/elf/section.c
index 7ad8363..c619293 100644
--- a/src/format/elf/section.c
+++ b/src/format/elf/section.c
@@ -50,11 +50,12 @@ bool read_elf_section_names(elf_format *format)
     Elf32_Shdr section;                     /* Section visée               */
 
     offset = format->header.e_shoff + format->header.e_shentsize * format->header.e_shstrndx;
-    if ((offset + sizeof(Elf32_Shdr)) >= EXE_FORMAT(format)->length) return false;
+
+    if ((offset + sizeof(Elf32_Shdr)) > EXE_FORMAT(format)->length) return false;
 
     memcpy(&section, &EXE_FORMAT(format)->content[offset], sizeof(Elf32_Shdr));
 
-    if ((section.sh_offset + section.sh_size) >= EXE_FORMAT(format)->length) return false;
+    if ((section.sh_offset + section.sh_size) > EXE_FORMAT(format)->length) return false;
 
     format->sec_names = (char *)calloc(section.sh_size + 1, sizeof(char));
     format->sec_size = section.sh_size;
diff --git a/src/format/elf/symbol.c b/src/format/elf/symbol.c
index fbb6fd8..eaf11a4 100644
--- a/src/format/elf/symbol.c
+++ b/src/format/elf/symbol.c
@@ -94,6 +94,10 @@ bool load_elf_symbols(elf_format *format)
     off_t str_size;                         /* Taille de section           */
     off_t rel_start;                        /* Début de section            */
     off_t rel_size;                         /* Taille de section           */
+
+
+    bool test;                              /* Bilan d'une recherche       */
+
     off_t dyn_start;                        /* Début de section            */
     off_t dyn_size;                         /* Taille de section           */
 
@@ -133,7 +137,56 @@ bool load_elf_symbols(elf_format *format)
 
     }
 
-    /* Relocalisations dynamiques */
+    /* Liaison dynamique (si elle existe) */
+
+    test = find_elf_section_by_name(format, ".dynsym", &section);
+
+    if (!test)
+    {
+        test = find_elf_section_by_type(format, SHT_HASH, &sections, &count);
+
+        if (test)
+            test = find_elf_section_by_index(format, ELF_SHDR(format, &sections[0], sh_link), &section);
+
+    }
+
+    if (test)
+    {
+        get_elf_section_content(format, &section, &dyn_start, &dyn_size, NULL);
+
+        result &= find_elf_section_by_index(format, ELF_SHDR(format, &section, sh_link), &section);
+
+    }
+
+    if (result)
+    {
+        get_elf_section_content(format, &section, &str_start, &str_size, NULL);
+
+        switch (get_elf_target_machine(format))
+        {
+            case FTM_MIPS:
+                result = g_elf_format_find_mips_dynamic_symbols(format, dyn_start, dyn_size, str_start, str_size);
+                break;
+
+            default:
+                break;
+
+        }
+
+    }
+
+
+
+
+
+
+
+
+
+
+
+
+#if 0
 
     find_elf_section_by_type(format, SHT_REL, &sections, &count);
 
@@ -171,6 +224,14 @@ bool load_elf_symbols(elf_format *format)
 
     /* Récupération (seconde partie) */
 
+
+    /* switch ... */
+
+    g_elf_format_translate_mips_external_calls(format);
+    exit(0);
+
+
+
     if (result)
     {
 #if 0
@@ -182,7 +243,7 @@ bool load_elf_symbols(elf_format *format)
 #endif
     }
 
-
+#endif
 
     return result;