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Diffstat (limited to 'src/format/elf/symbols.c')
-rw-r--r--src/format/elf/symbols.c81
1 files changed, 36 insertions, 45 deletions
diff --git a/src/format/elf/symbols.c b/src/format/elf/symbols.c
index 1fa3d0e..04c584d 100644
--- a/src/format/elf/symbols.c
+++ b/src/format/elf/symbols.c
@@ -188,15 +188,11 @@ static void register_elf_entry_point(GElfFormat *format, virt_t vaddr, phys_t le
routine = g_binary_symbol_get_routine(symbol);
g_object_ref(G_OBJECT(routine));
- printf(" -- SYM CHANGE @ 0x%08x\n", vaddr);
-
_g_binary_symbol_attach_routine(symbol, routine, STP_ENTRY_POINT);
}
else
{
- printf(" -- SYM ENTRY @ 0x%08x\n", vaddr);
-
init_mrange(&range, &addr, len);
g_binary_routine_set_range(routine, &range);
@@ -229,10 +225,10 @@ static bool load_all_elf_basic_entry_points(GElfFormat *format)
elf_phdr dynamic; /* En-tête de programme DYNAMIC*/
elf_dyn item_a; /* Premier élément DYNAMIC */
elf_dyn item_b; /* Second élément DYNAMIC */
- const bin_t *content; /* Contenu binaire à lire */
- off_t length; /* Taille totale du contenu */
+ const GBinContent *content; /* Contenu binaire à lire */
+ phys_t length; /* Taille totale du contenu */
bool status; /* Bilan d'une opération */
- off_t pos; /* Tête de lecture courante */
+ vmpa2t pos; /* Tête de lecture courante */
uint32_t virt_32; /* Adresse virtuelle sur 32b */
uint64_t virt_64; /* Adresse virtuelle sur 64b */
@@ -285,26 +281,24 @@ static bool load_all_elf_basic_entry_points(GElfFormat *format)
assert(sizeof(fullname) >= (strlen(prefix) + sizeof(XSTR(UINT64_MAX) + 1)));
content = G_BIN_FORMAT(fmt)->content;
- length = G_BIN_FORMAT(fmt)->length;
- status = g_exe_format_translate_address_into_offset(G_EXE_FORMAT(format),
- ELF_DYN(fmt, *ar, d_un.d_val),
- &pos);
+ status = g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format),
+ ELF_DYN(fmt, *ar, d_un.d_val),
+ &pos);
if (!status) return;
- if ((pos + ELF_DYN(fmt, *sz, d_un.d_val)) < length)
- length = pos + ELF_DYN(fmt, *sz, d_un.d_val);
+ length = get_phy_addr(&pos) + ELF_DYN(fmt, *sz, d_un.d_val);
- for (i = 0; pos < length; i++)
+ for (i = 0; get_phy_addr(&pos) < length; i++)
{
if (fmt->is_32b)
{
- status = read_u32(&virt_32, content, &pos, length, fmt->endian);
+ status = g_binary_content_read_u32(content, &pos, fmt->endian, &virt_32);
ep = virt_32;
}
else
{
- status = read_u64(&virt_64, content, &pos, length, fmt->endian);
+ status = g_binary_content_read_u64(content, &pos, fmt->endian, &virt_64);
ep = virt_64;
}
@@ -354,31 +348,30 @@ static bool load_all_elf_basic_entry_points(GElfFormat *format)
if (find_elf_dynamic_item_from_pheader(format, &dynamic, DT_PLTGOT, &item_a))
{
- status = g_exe_format_translate_address_into_offset(G_EXE_FORMAT(format),
- ELF_DYN(format, item_a, d_un.d_val),
- &pos);
+ status = g_exe_format_translate_address_into_vmpa(G_EXE_FORMAT(format),
+ ELF_DYN(format, item_a, d_un.d_val),
+ &pos);
if (status)
{
content = G_BIN_FORMAT(format)->content;
- length = G_BIN_FORMAT(format)->length;
/* On saute le premier élément... */
if (format->is_32b)
- status = read_u32(&virt_32, content, &pos, length, format->endian);
+ status = g_binary_content_read_u32(content, &pos, format->endian, &virt_32);
else
- status = read_u64(&virt_64, content, &pos, length, format->endian);
+ status = g_binary_content_read_u64(content, &pos, format->endian, &virt_64);
while (1)
{
if (format->is_32b)
{
- status = read_u32(&virt_32, content, &pos, length, format->endian);
+ status = g_binary_content_read_u32(content, &pos, format->endian, &virt_32);
ep = virt_32;
}
else
{
- status = read_u64(&virt_64, content, &pos, length, format->endian);
+ status = g_binary_content_read_u64(content, &pos, format->endian, &virt_64);
ep = virt_64;
}
@@ -428,9 +421,9 @@ static bool load_all_elf_basic_entry_points(GElfFormat *format)
bool get_elf_symbol_by_index(GElfFormat *format, const elf_shdr *sym, off_t index, elf_sym *symbol)
{
- off_t sym_start; /* Début de section */
- off_t sym_size; /* Taille de section */
- off_t offset; /* Emplacement à venir lire */
+ phys_t sym_start; /* Début de section */
+ phys_t sym_size; /* Taille de section */
+ phys_t offset; /* Emplacement à venir lire */
get_elf_section_content(format, sym, &sym_start, &sym_size, NULL);
@@ -505,9 +498,9 @@ static bool load_elf_internal_symbols(GElfFormat *format)
{
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 */
+ phys_t start; /* Début de la zone à traiter */
+ phys_t size; /* Taille de cette même zone */
+ phys_t iter; /* Boucle de parcours */
elf_sym sym; /* Symbole aux infos visées */
virt_t virt; /* Adresse virtuelle */
vmpa2t addr; /* Localisation d'une routine */
@@ -682,50 +675,48 @@ static bool load_elf_internal_symbols(GElfFormat *format)
static bool find_elf_dynamic_item(const GElfFormat *format, const elf_shdr *section, int32_t type, elf_dyn *item)
{
bool result; /* Bilan à retourner */
- const bin_t *content; /* Contenu binaire à lire */
- off_t length; /* Taille totale du contenu */
- off_t pos; /* Position de lecture */
- off_t tmp; /* Position écrasable */
+ const GBinContent *content; /* Contenu binaire à lire */
+ phys_t pos; /* Position de lecture */
+ vmpa2t tmp; /* Position écrasable */
int32_t tag32; /* Type de l'entrée (32 bits) */
int64_t tag64; /* Type de l'entrée (64 bits) */
result = true;
content = G_BIN_FORMAT(format)->content;
- length = G_BIN_FORMAT(format)->length;
for (pos = ELF_SHDR(format, *section, sh_offset);
- pos < length/* FIXME !! + xploit */ && result;
+ result;
pos += ELF_SIZEOF_DYN(format))
{
- tmp = pos;
+ init_vmpa(&tmp, pos, VMPA_NO_VIRTUAL);
if (format->is_32b)
{
- result = read_s32(&tag32, content, &tmp, length, format->endian);
+ result = g_binary_content_read_s32(content, &tmp, format->endian, &tag32);
if (tag32 == type) break;
}
else
{
- result = read_s64(&tag64, content, &tmp, length, format->endian);
+ result = g_binary_content_read_s64(content, &tmp, format->endian, &tag64);
if (tag64 == type) break;
}
}
- result &= (pos < length);
-
if (result)
{
+ init_vmpa(&tmp, pos, VMPA_NO_VIRTUAL);
+
if (format->is_32b)
{
- result = read_s32(&item->dyn32.d_tag, content, &pos, length, format->endian);
- result &= read_s32(&item->dyn32.d_un.d_val, content, &pos, length, format->endian);
+ result = g_binary_content_read_s32(content, &tmp, format->endian, &item->dyn32.d_tag);
+ result &= g_binary_content_read_s32(content, &tmp, format->endian, &item->dyn32.d_un.d_val);
}
else
{
- result = read_s64(&item->dyn64.d_tag, content, &pos, length, format->endian);
- result &= read_s64(&item->dyn64.d_un.d_val, content, &pos, length, format->endian);
+ result = g_binary_content_read_s64(content, &tmp, format->endian, &item->dyn64.d_tag);
+ result &= g_binary_content_read_s64(content, &tmp, format->endian, &item->dyn64.d_un.d_val);
}
}
generated by cgit v0.11.2-87-g4458 at 2024-05-05 10:18:55 (GMT)