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authorCyrille Bagard <nocbos@gmail.com>2017-12-08 20:50:56 (GMT)
committerCyrille Bagard <nocbos@gmail.com>2017-12-08 20:50:56 (GMT)
commit39116dce7d40dab310e929f92fdbfc865b5fac20 (patch)
treea0b8dc11070f8a68de6b6f7bbc84b3d4ccf25afd /plugins/elf
parentcf11fcf862b98ef57935bcfccd6f2f6ae3f925f6 (diff)
Introduced the symbol visibility.
Diffstat (limited to 'plugins/elf')
-rw-r--r--plugins/elf/symbols.c60
1 files changed, 36 insertions, 24 deletions
diff --git a/plugins/elf/symbols.c b/plugins/elf/symbols.c
index 292913b..b5dc2b8 100644
--- a/plugins/elf/symbols.c
+++ b/plugins/elf/symbols.c
@@ -521,6 +521,8 @@ static bool do_elf_internal_symbol_loading(GElfLoading *loading, GElfFormat *for
{
bool result; /* Bilan à retourner */
elf_sym sym; /* Symbole aux infos visées */
+ SymbolStatus status; /* Visibilité du symbole */
+ vmpa2t addr; /* Localisation d'un symbole */
virt_t virt; /* Adresse virtuelle */
const elf_shdr *section; /* Groupe de sections trouvées */
bool use_virt; /* Choix de construction de nom*/
@@ -529,7 +531,6 @@ static bool do_elf_internal_symbol_loading(GElfLoading *loading, GElfFormat *for
phys_t first; /* Position du premier élément */
const char *name; /* Nom du symbole trouvé */
GBinFormat *base; /* Version basique du format */
- vmpa2t addr; /* Localisation d'une routine */
GBinSymbol *symbol; /* Nouveau symbole construit */
char alt_name[6 + VMPA_MAX_LEN]; /* Nom abstrait de substitution*/
virt_t final_virt; /* Adresse virtuelle retenue */
@@ -539,23 +540,23 @@ static bool do_elf_internal_symbol_loading(GElfLoading *loading, GElfFormat *for
result = read_elf_symbol(format, iter, &sym);
if (!result) goto geslp_done;
- /* On rejette les symboles qui ne sont pas définis au sein du binaire */
-
- if (ELF_SYM(format, sym, st_shndx) == 0) goto geslp_done;
-
- /* Résolution précise d'adresse */
-
- virt = ELF_SYM(format, sym, st_value);
- if (virt == 0) goto geslp_done;
+ /* Nature de la visibilité et adresse associée */
+ if (ELF_SYM(format, sym, st_shndx) == 0)
+ {
+ status = SSS_IMPORTED;
+ init_vmpa(&addr, VMPA_NO_PHYSICAL, VMPA_NO_VIRTUAL);
- /* TODO */
-
- //init_vmpa(&addr, VMPA_NO_PHYSICAL, ELF_SYM(format, sym, st_value));
+ }
+ else
+ {
+ status = SSS_EXPORTED;
- //init_mrange(&range, &addr, 0);
+ virt = ELF_SYM(format, sym, st_value);
+ if (virt == 0) goto geslp_done;
+ }
/* Première ébauche de nom */
@@ -611,18 +612,25 @@ static bool do_elf_internal_symbol_loading(GElfLoading *loading, GElfFormat *for
/* Ajustement de la position */
- if (ELF_HDR(format, format->header, e_machine) == EM_ARM)
- final_virt = virt & ~0x1;
- else
- final_virt = virt;
+ if (status == SSS_IMPORTED)
+ init_mrange(&range, &addr, 0);
- if (!g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format), final_virt, &addr))
+ else
{
- symbol = NULL;
- break;
- }
+ if (ELF_HDR(format, format->header, e_machine) == EM_ARM)
+ final_virt = virt & ~0x1;
+ else
+ final_virt = virt;
+
+ if (!g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format), final_virt, &addr))
+ {
+ symbol = NULL;
+ break;
+ }
+
+ init_mrange(&range, &addr, ELF_SYM(format, sym, st_size));
- init_mrange(&range, &addr, ELF_SYM(format, sym, st_size));
+ }
/* Création d'un nom unique ? */
@@ -644,8 +652,6 @@ static bool do_elf_internal_symbol_loading(GElfLoading *loading, GElfFormat *for
routine = try_to_demangle_routine(name);
symbol = G_BIN_SYMBOL(routine);
- g_binary_symbol_set_range(symbol, &range);
-
/* Comptabilisation pour le désassemblage brut */
g_binary_format_register_code_point(G_BIN_FORMAT(format), virt, false);
@@ -659,8 +665,14 @@ static bool do_elf_internal_symbol_loading(GElfLoading *loading, GElfFormat *for
}
if (symbol != NULL)
+ {
+ g_binary_symbol_set_range(symbol, &range);
+ g_binary_symbol_set_status(symbol, status);
+
g_binary_format_add_symbol(base, symbol);
+ }
+
geslp_done:
return result;