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-rw-r--r--src/format/elf/symbols.c150
-rw-r--r--src/format/format.h2
-rw-r--r--src/format/symbol.c24
-rw-r--r--src/format/symbol.h7
4 files changed, 129 insertions, 54 deletions
diff --git a/src/format/elf/symbols.c b/src/format/elf/symbols.c
index dc3fbe0..06d7cab 100644
--- a/src/format/elf/symbols.c
+++ b/src/format/elf/symbols.c
@@ -37,6 +37,7 @@
#include "../mangling/demangler.h"
#include "../../arch/raw.h"
#include "../../common/extstr.h"
+#include "../../core/params.h"
#include "../../gui/panels/log.h"
@@ -123,6 +124,12 @@ bool load_elf_symbols(GElfFormat *format)
+ /* Symboles internes */
+ result = load_elf_internal_symbols(format);
+
+
+
+
/* Symboles externes */
if (find_elf_sections_by_type(format, SHT_DYNAMIC, &sections, &count))
@@ -137,7 +144,7 @@ bool load_elf_symbols(GElfFormat *format)
else log_variadic_message(LMT_INFO, _("Binary is statically linked"));
/* Symboles internes */
- result &= load_elf_internal_symbols(format);
+ //result &= load_elf_internal_symbols(format);
return result;
@@ -1272,70 +1279,137 @@ static bool annotate_elf_section_header_table(GElfFormat *format)
static bool load_elf_internal_symbols(GElfFormat *format)
{
bool result; /* Bilan à retourner */
- elf_shdr *symtabs; /* Groupe de sections trouvées */
+ bool no_name; /* Choix de construction de nom*/
+ elf_shdr *sections; /* Groupe de sections trouvées */
size_t count; /* Quantité de données */
size_t i; /* Boucle de parcours */
- elf_shdr strtab; /* Section .strtab trouvée */
- bool has_strtab; /* Présence de cette section */
- off_t sym_start; /* Début de la zone à traiter */
- off_t sym_size; /* Taille de cette même zone */
- off_t iter; /* Boucle de parcours */
- const char *name; /* Nom du symbole trouvé */
- elf_sym sym; /* Symbole aux infos visées */
- GBinRoutine *routine; /* Nouvelle routine trouvée */
- GBinSymbol *symbol; /* Nouveau symbole construit */
result = true;
- if (find_elf_sections_by_type(format, SHT_SYMTAB, &symtabs, &count))
- for (i = 0; i < count && result; i++)
+ /* Charge tous les symboles définis dans une section */
+ bool add_all_symbols_from_section(GElfFormat *format, const elf_shdr *section, bool use_virt)
+ {
+ elf_shdr strtab; /* Section .strtab trouvée */
+ bool has_strtab; /* Présence de cette section */
+ off_t start; /* Début de la zone à traiter */
+ off_t size; /* Taille de cette même zone */
+ off_t iter; /* Boucle de parcours */
+ elf_sym sym; /* Symbole aux infos visées */
+ vmpa2t addr; /* Localisation d'une routine */
+ const char *name; /* Nom du symbole trouvé */
+ char alt_name[5 + VMPA_MAX_LEN]; /* Nom abstrait de substitution*/
+ GBinRoutine *routine; /* Nouvelle routine trouvée */
+ GBinSymbol *symbol; /* Nouveau symbole construit */
+
+ has_strtab = find_elf_section_by_index(format, ELF_SHDR(format, *section, sh_link), &strtab);
+
+ get_elf_section_content(format, section, &start, &size, NULL);
+
+ for (iter = start; iter < (start + size); )
{
- has_strtab = find_elf_section_by_index(format, ELF_SHDR(format, symtabs[i], sh_link), &strtab);
+ result = read_elf_symbol(format, &iter, &sym);
+ if (!result) break;
+
+ if (ELF_SYM(format, sym, st_value) == 0) continue;
+
+ /* Résolution précise d'adresse */
+
+
+ /* TODO */
+
+ init_vmpa(&addr, ELF_SYM(format, sym, st_value), VMPA_NO_VIRTUAL);
- get_elf_section_content(format, &symtabs[i], &sym_start, &sym_size, NULL);
- for (iter = sym_start; iter < (sym_start + sym_size); )
+
+ /* Première ébauche de nom */
+
+ if (!has_strtab) name = NULL;
+ else name = get_elf_symbol_name(format, section, &strtab,
+ ((iter - start) / ELF_SIZEOF_SYM(format)) - 1);
+
+ /* Traitements particuliers */
+
+ switch (ELF_ST_TYPE(format, sym))
{
- result = read_elf_symbol(format, &iter, &sym);
- if (!result) break;
+ case STT_OBJECT:
- if (ELF_SYM(format, sym, st_value) == 0) continue;
+ /* Création d'un nom unique ? */
- if (!(ELF_ST_TYPE(format, sym) == STT_FUNC)) continue;
+ if (name != NULL)
+ {
+ strcpy(alt_name, "obj_");
- if (!has_strtab) name = NULL;
- else name = get_elf_symbol_name(format, &symtabs[i], &strtab,
- ((iter - sym_start) / ELF_SIZEOF_SYM(format)) - 1);
+ if (use_virt)
+ vmpa2_virt_to_string(&addr, MDS_UNDEFINED, alt_name + 4, NULL);
+ else
+ vmpa2_phys_to_string(&addr, MDS_UNDEFINED, alt_name + 4, NULL);
- if (name == NULL)
- {
- /* FIXME */
- name = "unknown";
- }
+ }
+
+
+ /* TODO */
+
+ symbol = NULL;
- /* Routine */
- routine = try_to_demangle_routine(name);
+ break;
+
+ case STT_FUNC:
+
+ /* Création d'un nom unique ? */
+
+ if (name != NULL)
+ {
+ strcpy(alt_name, "func_");
+
+ if (use_virt)
+ vmpa2_virt_to_string(&addr, MDS_UNDEFINED, alt_name + 5, NULL);
+ else
+ vmpa2_phys_to_string(&addr, MDS_UNDEFINED, alt_name + 5, NULL);
- g_binary_routine_set_address(routine, ELF_SYM(format, sym, st_value));
- g_binary_routine_set_size(routine, ELF_SYM(format, sym, st_size));
+ }
+
+ /* Routine */
+
+ routine = try_to_demangle_routine(name);
- ///// reactiver g_binary_format_add_routine(G_BIN_FORMAT(format), routine);
+ g_binary_routine_set_address(routine, &addr);
+ g_binary_routine_set_size(routine, ELF_SYM(format, sym, st_size));
- /* Symbole uniquement */
+ /* Symbole uniquement */
- symbol = g_binary_symbol_new(STP_FUNCTION, name, ELF_SYM(format, sym, st_value));
+ symbol = g_binary_symbol_new(STP_ROUTINE, name, ~0);
+ g_binary_symbol_attach_routine(symbol, routine);
- g_binary_symbol_attach_routine(symbol, routine);
+ break;
- ///// reactiver g_binary_format_add_symbol(G_BIN_FORMAT(format), symbol);
+ default:
+ symbol = NULL;
+ break;
}
+ if (symbol != NULL)
+ g_binary_format_add_symbol(G_BIN_FORMAT(format), symbol);
}
- return true;
+ return true;
+
+ }
+
+ if (!g_generic_config_get_value(get_main_configuration(), MPK_FORMAT_NO_NAME, &no_name))
+ return false;
+
+ if (find_elf_sections_by_type(format, SHT_DYNSYM, &sections, &count))
+ for (i = 0; i < count && result; i++)
+ result = add_all_symbols_from_section(format, &sections[i], no_name);
+
+ if (find_elf_sections_by_type(format, SHT_SYMTAB, &sections, &count))
+ for (i = 0; i < count && result; i++)
+ result = add_all_symbols_from_section(format, &sections[i], no_name);
+
+ return result;
}
diff --git a/src/format/format.h b/src/format/format.h
index d87735d..2eed669 100644
--- a/src/format/format.h
+++ b/src/format/format.h
@@ -65,7 +65,7 @@ void g_binary_format_add_symbol(GBinFormat *, GBinSymbol *);
GBinSymbol **g_binary_format_get_symbols(const GBinFormat *, size_t *);
/* Ajoute une routine à la collection du format binaire. */
-void g_binary_format_add_routine(GBinFormat *, GBinRoutine *);
+void g_binary_format_add_routine(GBinFormat *, GBinRoutine *) __attribute__ ((deprecated));
/* Fournit le prototype de toutes les routines détectées. */
GBinRoutine **g_binary_format_get_routines(const GBinFormat *, size_t *);
diff --git a/src/format/symbol.c b/src/format/symbol.c
index f1183cb..5b80555 100644
--- a/src/format/symbol.c
+++ b/src/format/symbol.c
@@ -192,8 +192,9 @@ vmpa_t g_binary_symbol_get_address(const GBinSymbol *symbol)
/******************************************************************************
* *
* Paramètres : symbol = symbole à venir consulter. *
+* length = taille de l'instruction ou NULL. [OUT] *
* *
-* Description : Fournit l'adresse associée à un symbole. *
+* Description : Fournit l'emplacement où se situe un symbole. *
* *
* Retour : Adresse virtuelle ou physique associée. *
* *
@@ -201,7 +202,7 @@ vmpa_t g_binary_symbol_get_address(const GBinSymbol *symbol)
* *
******************************************************************************/
-const vmpa2t *g_binary_symbol_get_address2(const GBinSymbol *symbol)
+const vmpa2t *g_binary_symbol_get_location(const GBinSymbol *symbol, off_t *length)
{
const vmpa2t *result; /* Localisation à retourner */
@@ -210,19 +211,20 @@ const vmpa2t *g_binary_symbol_get_address2(const GBinSymbol *symbol)
switch (symbol->type)
{
case STP_DATA:
- result = g_arch_instruction_get_location2(symbol->extra.instr, NULL);
+ result = g_arch_instruction_get_location2(symbol->extra.instr, length);
break;
- default:
- result = NULL;
- break;
-
- }
-
+ case STP_ROUTINE:
+ result = g_binary_routine_get_address(symbol->extra.routine);
+ if (length != NULL)
+ *length = g_binary_routine_get_size(symbol->extra.routine);
+ break;
- if (result == NULL)
- printf("got addr=%p for symbol=%p (data=%d)\n", result, symbol, symbol->type == STP_DATA);
+ default:
+ result = NULL;
+ break;
+ }
return result;
diff --git a/src/format/symbol.h b/src/format/symbol.h
index 407375f..8d27f97 100644
--- a/src/format/symbol.h
+++ b/src/format/symbol.h
@@ -37,6 +37,7 @@
typedef enum _SymbolType
{
STP_DATA, /* Données brutes */
+ STP_ROUTINE, /* Simple morceau de code */
STP_OBJECT, /* Objet quelconque */
STP_FUNCTION, /* Simple morceau de code */
STP_STRING /* Chaîne de caractères */
@@ -73,10 +74,8 @@ const char *g_binary_symbol_to_string(const GBinSymbol *);
/* Fournit l'adresse associée à un symbole. */
vmpa_t g_binary_symbol_get_address(const GBinSymbol *);
-
-/* Fournit l'adresse associée à un symbole. */
-const vmpa2t *g_binary_symbol_get_address2(const GBinSymbol *);
-
+/* Fournit l'emplacement où se situe un symbole. */
+const vmpa2t *g_binary_symbol_get_location(const GBinSymbol *, off_t *);
/* Fournit la taille officielle d'un symbole. */
off_t g_binary_symbol_get_size(const GBinSymbol *);
generated by cgit v0.11.2-87-g4458 at 2024-12-27 05:31:20 (GMT)