diff options
| -rwxr-xr-x | bfd/load.py | 62 | ||||
| -rw-r--r-- | bfd/test/test.c | 1 |
2 files changed, 58 insertions, 5 deletions
diff --git a/bfd/load.py b/bfd/load.py index cfb9f58..ab60857 100755 --- a/bfd/load.py +++ b/bfd/load.py @@ -153,7 +153,8 @@ class ELF(object): self.phdr = [] self.shhdr = [] self.size = int() - self.ste = [] + self.string_tb_e = [] + self.string_tb_e_dyn = [] def init(self, size): self.size = size @@ -166,7 +167,34 @@ class ELF(object): shnum = int.from_bytes(self.elfhdr.e_shnum, byteorder="little", signed=False) for i in range(0, shnum): self.read_SHDR(size) - self.read_SHDR(size) + #self.read_SHDR(size) + for i in range(0, shnum): + type = int.from_bytes(self.shhdr[i].sh_type, byteorder="little", signed=False) + if type == sh_type_e.SHT_SYMTAB: + print("size: " + repr(int.from_bytes(self.shhdr[i].sh_size, byteorder="little"))) + print("offset: " + repr(int.from_bytes(self.shhdr[i].sh_offset, byteorder="little"))) + self.so.seek(int.from_bytes(self.shhdr[i].sh_offset, byteorder="little", signed=False), 0) + symbol_tb = self.so.read(int.from_bytes(self.shhdr[i].sh_size, byteorder="little", signed=False)) + #print(symbol_tb) + offset = 0 + num = int(int.from_bytes(self.shhdr[i].sh_size, byteorder="little") / 24) + print(num) + for j in range(0, num): + self.read_st_entry(symbol_tb[offset:offset + 24], self.string_tb_e) + offset += 8*24 + if type == sh_type_e.SHT_DYNSYM: + print("found dyn") + print("size: " + repr(int.from_bytes(self.shhdr[i].sh_size, byteorder="little"))) + print("offset: " + repr(int.from_bytes(self.shhdr[i].sh_offset, byteorder="little"))) + self.so.seek(int.from_bytes(self.shhdr[i].sh_offset, byteorder="little", signed=False), 0) + symbol_tb = self.so.read(int.from_bytes(self.shhdr[i].sh_size, byteorder="little", signed=False)) + #print(symbol_tb) + offset = 0 + num = int(int.from_bytes(self.shhdr[i].sh_size, byteorder="little") / 24) + print(num) + for j in range(0, num): + self.read_st_entry(symbol_tb[offset:offset + 24], self.string_tb_e_dyn) + offset += 8*24 # 32 or 64 def read_ELF_H(self, size): @@ -234,14 +262,37 @@ class ELF(object): elif size == 64: dummy.sh_entsize = self.so.read(8) self.shhdr.append(dummy) - def read_st_entry(self, st): - dummy = Symbol_Table_Entry() + def read_st_entry(self, st, entry_list): + dummy = Symbol_Table_Entry64(0,0,0,0,0,0) dummy.st_name = st[0:4] dummy.st_info = st[4:5] dummy.st_other = st[5:6] dummy.st_shndx = st[6:8] dummy.st_value = st[8:16] dummy.st_size = st[16:24] + entry_list.append(dummy) + + def dump_symbol_idx(self): + for iter in self.string_tb_e: + print("symbol:") + print("-----------------------------------------------------------------") + print("name: " + repr(int.from_bytes(iter.st_name, byteorder="little"))) + print("size: " + repr(int.from_bytes(iter.st_size, byteorder="little"))) + print("value: " + repr(int.from_bytes(iter.st_value, byteorder="little"))) + print("info: " + repr(int.from_bytes(iter.st_info, byteorder="little"))) + print("other: " + repr(int.from_bytes(iter.st_other, byteorder="little"))) + print("shndx: " + repr(int.from_bytes(iter.st_shndx, byteorder="little"))) + print("-----------------------------------------------------------------") + for iter in self.string_tb_e_dyn: + print("dyn symbol:") + print("-----------------------------------------------------------------") + print("name: " + repr(int.from_bytes(iter.st_name, byteorder="little"))) + print("size: " + repr(int.from_bytes(iter.st_size, byteorder="little"))) + print("value: " + repr(int.from_bytes(iter.st_value, byteorder="little"))) + print("info: " + repr(int.from_bytes(iter.st_info, byteorder="little"))) + print("other: " + repr(int.from_bytes(iter.st_other, byteorder="little"))) + print("shndx: " + repr(int.from_bytes(iter.st_shndx, byteorder="little"))) + print("-----------------------------------------------------------------") def dump_header(self): print("------------------------------------------------------------------------------") @@ -341,9 +392,10 @@ def main(): elf = ELF(so) elf.init(64) #elf.dump_header() - elf.dump_symbol_tb() + #elf.dump_symbol_tb() #elf.dump_phdrs() #elf.dump_shdrs() + elf.dump_symbol_idx() ''' so.close() ch_so_to_exe("./test/test.so") diff --git a/bfd/test/test.c b/bfd/test/test.c index fe2932c..db577cb 100644 --- a/bfd/test/test.c +++ b/bfd/test/test.c @@ -6,6 +6,7 @@ int myfunc3(void) {return 3;} int myfunc4(void) {return 4;} int myfunc5(void) {return 5;} int myfunc6(void) {return 6;} +int myfunc7(int a, int b) {return a + b;} int myvar1 = 1; int myvar2 = 2; |