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authorCyrille Bagard <nocbos@gmail.com>2018-05-14 19:40:07 (GMT)
committerCyrille Bagard <nocbos@gmail.com>2018-05-14 19:40:07 (GMT)
commit0286b53bad21abf91cbe17c4772ca9cde6a89cbc (patch)
tree3bec9dc7e118c00ce9c748576b01606a71880ad7 /src/analysis/disass
parent267b1ae8608ed4bf52de743798e8647c903ee1b4 (diff)
Created an instruction database for Chrysalide.
Diffstat (limited to 'src/analysis/disass')
-rw-r--r--src/analysis/disass/disassembler.c60
-rw-r--r--src/analysis/disass/fetch.c5
2 files changed, 51 insertions, 14 deletions
diff --git a/src/analysis/disass/disassembler.c b/src/analysis/disass/disassembler.c
index ca5e565..efe50e1 100644
--- a/src/analysis/disass/disassembler.c
+++ b/src/analysis/disass/disassembler.c
@@ -36,6 +36,7 @@
#include "instructions.h"
#include "output.h"
#include "routines.h"
+#include "../../arch/storage.h"
#include "../../core/global.h"
#include "../../glibext/generators/prologue.h"
#include "../../plugins/pglist.h"
@@ -216,6 +217,10 @@ static void compute_disassembly(GLoadedBinary *binary, GProcContext *context, wg
{
GArchProcessor *proc; /* Architecture du binaire */
GExeFormat *format; /* Format du binaire représenté*/
+ GBinContent *content; /* Contenu brut représenté */
+ const gchar *id; /* Identifiant court et unique */
+ GAsmStorage *storage; /* Cache propre à constituer */
+ bool cached; /* Instructions en cache */
GArchInstruction **instrs; /* Instructions résultantes */
size_t count; /* Quantité de ces instructions*/
@@ -227,25 +232,54 @@ static void compute_disassembly(GLoadedBinary *binary, GProcContext *context, wg
format = g_loaded_binary_get_format(binary);
+ g_binary_format_preload_disassembling_context(G_BIN_FORMAT(format), context, status);
+
+ /**
+ * Etape zéro : récupération des instructions depuis un cache, si ce dernier exitste.
+ */
+
+ content = g_loaded_content_get_content(G_LOADED_CONTENT(binary));
+
+ id = g_binary_content_get_checksum(content);
+
+ storage = g_asm_storage_new_compressed(proc, id);
+
+ g_object_unref(G_OBJECT(content));
+
+ cached = g_asm_storage_has_cache(storage);
+
+ if (cached)
+ cached = g_asm_storage_open(storage, G_BIN_FORMAT(format), gid);
+
+ g_object_unref(G_OBJECT(storage));
+
/**
* Première étape : collecte des instructions.
*/
- instrs = disassemble_binary_content(binary, context, gid, status, &count);
+ if (!cached)
+ {
+ instrs = disassemble_binary_content(binary, context, gid, status, &count);
+
+ g_arch_processor_set_instructions(proc, instrs, count);
- g_arch_processor_set_instructions(proc, instrs, count);
+ process_disassembly_event(PGA_DISASSEMBLY_RAW, binary);
- process_disassembly_event(PGA_DISASSEMBLY_RAW, binary);
+ }
/**
* Seconde étape : liaisons des instructions.
*/
- process_all_instructions(gid, status, _("Calling 'link' hook on all instructions..."),
- g_instructions_study_do_link_operation,
- proc, context, format);
+ if (!cached)
+ {
+ process_all_instructions(gid, status, _("Calling 'link' hook on all instructions..."),
+ g_instructions_study_do_link_operation,
+ proc, context, format);
- process_disassembly_event(PGA_DISASSEMBLY_HOOKED_LINK, binary);
+ process_disassembly_event(PGA_DISASSEMBLY_HOOKED_LINK, binary);
+
+ }
/**
* Troisième étape : exécution d'éventuels post-traitements.
@@ -271,11 +305,15 @@ static void compute_disassembly(GLoadedBinary *binary, GProcContext *context, wg
* Cinquième étape : liaisons entre instructions.
*/
- process_all_instructions(gid, status, _("Establishing links betweek all instructions..."),
- g_instructions_study_establish_links,
- proc, context, format);
+ if (!cached)
+ {
+ process_all_instructions(gid, status, _("Establishing links betweek all instructions..."),
+ g_instructions_study_establish_links,
+ proc, context, format);
- process_disassembly_event(PGA_DISASSEMBLY_LINKED, binary);
+ process_disassembly_event(PGA_DISASSEMBLY_LINKED, binary);
+
+ }
/**
* Sixième étape : regroupement en blocs basiques.
diff --git a/src/analysis/disass/fetch.c b/src/analysis/disass/fetch.c
index 934c755..03b3ff0 100644
--- a/src/analysis/disass/fetch.c
+++ b/src/analysis/disass/fetch.c
@@ -431,11 +431,10 @@ GArchInstruction **disassemble_binary_content(GLoadedBinary *binary, GProcContex
g_proc_context_attach_counter(template.ctx, &remaining_counter);
/**
- * Première phase de désassemblage : intégration des infos du format.
+ * Première phase de désassemblage : intégration des infos du format,
+ * récupérées dans le contexte via un appel à g_binary_format_preload_disassembling_context().
*/
- g_binary_format_preload_disassembling_context(format, template.ctx, status);
-
populate_fresh_memory_areas(gid, status, template.areas, template.count, G_PRELOAD_INFO(ctx));
g_work_queue_wait_for_completion(queue, gid);