diff options
Diffstat (limited to 'src/analysis/disass')
| -rw-r--r-- | src/analysis/disass/Makefile.am | 1 | ||||
| -rw-r--r-- | src/analysis/disass/disassembler.c | 7 | ||||
| -rw-r--r-- | src/analysis/disass/fetch.c | 4 | ||||
| -rw-r--r-- | src/analysis/disass/limit.c | 156 | ||||
| -rw-r--r-- | src/analysis/disass/limit.h | 38 | ||||
| -rw-r--r-- | src/analysis/disass/output.c | 2 | ||||
| -rw-r--r-- | src/analysis/disass/output.h | 2 |
7 files changed, 203 insertions, 7 deletions
diff --git a/src/analysis/disass/Makefile.am b/src/analysis/disass/Makefile.am index 784731a..ce27d15 100644 --- a/src/analysis/disass/Makefile.am +++ b/src/analysis/disass/Makefile.am @@ -4,6 +4,7 @@ noinst_LTLIBRARIES = libanalysisdisass.la libanalysisdisass_la_SOURCES = \ disassembler.h disassembler.c \ fetch.h fetch.c \ + limit.h limit.c \ links.h links.c \ output.h output.c diff --git a/src/analysis/disass/disassembler.c b/src/analysis/disass/disassembler.c index 5a866c0..dc374db 100644 --- a/src/analysis/disass/disassembler.c +++ b/src/analysis/disass/disassembler.c @@ -33,6 +33,7 @@ #include "fetch.h" +#include "limit.h" #include "links.h" #include "output.h" #include "../../decomp/lang/asm.h" @@ -244,17 +245,17 @@ static void g_delayed_disassembly_process(GDelayedDisassembly *disass, GtkExtSta establish_links_between_lines(disass->instrs, routines, routines_count, statusbar, id); gtk_extended_status_bar_remove(statusbar, id); -#if 0 + /* Troisième étape */ id = gtk_extended_status_bar_push(statusbar, _("Finding remaining limits..."), true); qsort(routines, routines_count, sizeof(GBinRoutine *), (__compar_fn_t)g_binary_routine_rcompare); - limit_all_routines(disass->lines, routines, routines_count, statusbar, id); + limit_all_routines(disass->instrs, routines, routines_count, statusbar, id); gtk_extended_status_bar_remove(statusbar, id); -#endif + /* Quatrième étape */ id = gtk_extended_status_bar_push(statusbar, _("Printing disassembled code..."), true); diff --git a/src/analysis/disass/fetch.c b/src/analysis/disass/fetch.c index e487dd2..6bd9795 100644 --- a/src/analysis/disass/fetch.c +++ b/src/analysis/disass/fetch.c @@ -69,8 +69,8 @@ GArchInstruction *disassemble_binary_parts(const GOpenidaBinary *binary, GBinPar result = NULL; - format = g_openida_binary_get_format(binary); - proc = get_arch_processor_from_format(format); + format = G_BIN_FORMAT(g_openida_binary_get_format(binary)); + proc = get_arch_processor_from_format(G_EXE_FORMAT(format)); bin_data = g_openida_binary_get_data(binary, &bin_length); /* Préparation du suivi de la progression */ diff --git a/src/analysis/disass/limit.c b/src/analysis/disass/limit.c new file mode 100644 index 0000000..2598d7e --- /dev/null +++ b/src/analysis/disass/limit.c @@ -0,0 +1,156 @@ + +/* OpenIDA - Outil d'analyse de fichiers binaires + * limit.c - détermination des bornes des routines + * + * Copyright (C) 2012 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 "limit.h" + + +#include <malloc.h> + + + +/* Cherche l'adresse de fin d'une routine. */ +static vmpa_t find_best_ending_address_for_routine(GArchInstruction *, size_t, const vmpa_t *, const off_t *, size_t); + + + +/****************************************************************************** +* * +* Paramètres : list = ensemble d'instructions désassemblées. * +* routines = prototypes existants à insérer. * +* count = quantité de ces prototypes. * +* statusbar = barre de statut avec progression à mettre à jour.* +* id = identifiant du message affiché à l'utilisateur. * +* * +* Description : S'assure que toutes les routines ont une taille définie. * +* * +* Retour : - * +* * +* Remarques : - * +* * +******************************************************************************/ + +void limit_all_routines(GArchInstruction *list, GBinRoutine **routines, size_t count, GtkExtStatusBar *statusbar, guint id) +{ + size_t i; /* Boucle de parcours */ + vmpa_t *starts; /* Adresses de départ */ + off_t *lengths; /* Tailles des routines */ + GArchInstruction *instr; /* Instr. de départ / arrivée */ + + if (count == 0) return; + + starts = (vmpa_t *)calloc(count, sizeof(vmpa_t)); + lengths = (off_t *)calloc(count, sizeof(off_t)); + + for (i = 0; i < count; i++) + { + starts[i] = g_binary_routine_get_address(routines[i]); + lengths[i] = g_binary_routine_get_size(routines[i]); + + gtk_extended_status_bar_update_activity(statusbar, id, (i + 1) * 1.0 / (count * 2)); + + } + + for (i = 0; i < count; i++) + { + /* Instruction de départ */ + + instr = g_arch_instruction_find_by_address(list, starts[i], true); + g_binary_routine_set_instructions(routines[i], instr); + + if (lengths[i] > 0) goto lar_next; + + /* Si le symbole est hors du code analysé (routine de PLT par exemple) */ + if (instr == NULL) goto lar_next; + + /* Taille de la routine */ + + lengths[i] = find_best_ending_address_for_routine(instr, i, starts, lengths, count); + lengths[i] -= starts[i]; + + g_binary_routine_set_size(routines[i], lengths[i]); + + lar_next: + + gtk_extended_status_bar_update_activity(statusbar, id, (i + 1 + count) * 1.0 / (count * 2)); + + } + + free(starts); + free(lengths); + +} + + +/****************************************************************************** +* * +* Paramètres : first = première instruction de la routine courante. * +* index = indice de la routine traitée dans la liste. * +* starts = adresse de départ des autres routines. * +* lengths = taille des différentes routines, valides ou nulles.* +* count = quantité de routines présentes. * +* * +* Description : Cherche l'adresse de fin d'une routine. * +* * +* Retour : Plus grande adresse de dernière instruction de routine. * +* * +* Remarques : - * +* * +******************************************************************************/ + +static vmpa_t find_best_ending_address_for_routine(GArchInstruction *first, size_t index, const vmpa_t *starts, const off_t *lengths, size_t count) +{ + vmpa_t result; /* Haute adresse à remonter */ + GArchInstruction *iter; /* Boucle de parcours #1 */ + vmpa_t candidate; /* Candidat potentiel */ + size_t i; /* Boucle de parcours #2 */ + + result = starts[index]; + + for (iter = first; + iter != NULL; + iter = g_arch_instruction_get_next_iter(first, iter, VMPA_MAX)) + { + g_arch_instruction_get_location(iter, NULL, NULL, &candidate); + + /* Regarde si on n'empiète pas sur une autre routine */ + + for (i = 0; i < count; i++) + { + if (i == index) continue; + + if (starts[i] <= candidate && candidate < (starts[i] + lengths[i])) + break; + + } + + if (i != count) break; + else result = candidate; + + /* Retour de fonction ? */ + if (g_arch_instruction_is_return(iter)) break; + + } + + return result; + +} diff --git a/src/analysis/disass/limit.h b/src/analysis/disass/limit.h new file mode 100644 index 0000000..7ef9396 --- /dev/null +++ b/src/analysis/disass/limit.h @@ -0,0 +1,38 @@ + +/* OpenIDA - Outil d'analyse de fichiers binaires + * limit.h - prototypes pour la détermination des bornes des routines + * + * Copyright (C) 2012 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 _ANALYSIS_DISASS_LIMIT_H +#define _ANALYSIS_DISASS_LIMIT_H + + +#include "../routine.h" +#include "../../gtkext/gtkextstatusbar.h" + + + +/* S'assure que toutes les routines ont une taille définie. */ +void limit_all_routines(GArchInstruction *, GBinRoutine **, size_t, GtkExtStatusBar *, guint); + + + +#endif /* _ANALYSIS_DISASS_LIMIT_H */ diff --git a/src/analysis/disass/output.c b/src/analysis/disass/output.c index 0209a97..343973f 100644 --- a/src/analysis/disass/output.c +++ b/src/analysis/disass/output.c @@ -45,7 +45,7 @@ * * ******************************************************************************/ -void print_disassembled_instructions(GCodeBuffer *buffer, const GExeFormat *format, const GArchInstruction *instrs, const GBinRoutine **routines, size_t count) +void print_disassembled_instructions(GCodeBuffer *buffer, const GExeFormat *format, const GArchInstruction *instrs, GBinRoutine * const *routines, size_t count) { GLangOutput *output; /* Modèle de sortie adéquat */ GArchProcessor *proc; /* Architecture du binaire */ diff --git a/src/analysis/disass/output.h b/src/analysis/disass/output.h index 40e7536..7e0a3cc 100644 --- a/src/analysis/disass/output.h +++ b/src/analysis/disass/output.h @@ -32,7 +32,7 @@ /* Transcrit du code désassemblé en texte humainement lisible. */ -void print_disassembled_instructions(GCodeBuffer *, const GExeFormat *, const GArchInstruction *, const GBinRoutine **, size_t); +void print_disassembled_instructions(GCodeBuffer *, const GExeFormat *, const GArchInstruction *, GBinRoutine * const *, size_t); |