[BSD] OFF: mips
Potoczky Andras
andras-ml at wertz.hu
2013. Ápr. 25., Cs, 14:43:16 CEST
Megtalaltam a little endian forditasi opciot es itt a hello readelf es
az sh readelf:
root at mips64:/home/andras/mips# readelf -h hello; readelf -h sh
ELF Header:
Magic: 7f 45 4c 46 01 01 01 00 01 00 00 00 00 00 00 00
Class: ELF32
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 1
Type: EXEC (Executable file)
Machine: MIPS R3000
Version: 0x1
Entry point address: 0x400220
Start of program headers: 52 (bytes into file)
Start of section headers: 2553788 (bytes into file)
Flags: 0x70001005, noreorder, cpic, o32,
mips32r2
Size of this header: 52 (bytes)
Size of program headers: 32 (bytes)
Number of program headers: 5
Size of section headers: 40 (bytes)
Number of section headers: 41
Section header string table index: 38
ELF Header:
Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
Class: ELF32
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: EXEC (Executable file)
Machine: MIPS R3000
Version: 0x1
Entry point address: 0x403bd0
Start of program headers: 52 (bytes into file)
Start of section headers: 781968 (bytes into file)
Flags: 0x50001007, noreorder, pic, cpic,
o32, mips32
Size of this header: 52 (bytes)
Size of program headers: 32 (bytes)
Number of program headers: 8
Size of section headers: 40 (bytes)
Number of section headers: 30
Section header string table index: 29
Most mar csak az ABI version elteres, de azt hiaba allitom. Lefordul,
de 1-es marad.
A gcc verzio egyebkent 4.4.6
Feltoltottem a boxra a hello-t little endiannal. Most a hibauzenet:
#./hello
Illegal instruction
Valtozott valamit.
Andras
2013-04-25 14:33 időpontban Bukuli Norbert ezt írta:
> Mi a fordito verzioja?
>
> 2013/4/25 Potoczky Andras <andras-ml at wertz.hu>
>
>> Lassuk:
>>
>> root at mips64:/home/andras/mips# readelf -h hello
>> ELF Header:
>> Magic: 7f 45 4c 46 01 02 01 00 01 00 00 00 00 00 00 00
>>
>> Class: ELF32
>> Data: 2's complement, big endian
>> Version: 1 (current)
>> OS/ABI: UNIX - System V
>> ABI Version: 1
>> Type: EXEC (Executable file)
>> Machine: MIPS R3000
>> Version: 0x1
>> Entry point address: 0x400220
>>
>> Start of program headers: 52 (bytes into file)
>> Start of section headers: 2547360 (bytes into file)
>> Flags: 0x70001005, noreorder, cpic,
>> o32, mips32r2
>>
>> Size of this header: 52 (bytes)
>> Size of program headers: 32 (bytes)
>> Number of program headers: 5
>> Size of section headers: 40 (bytes)
>> Number of section headers: 41
>> Section header string table index: 38
>> root at mips64:/home/andras/mips# readelf -h sh
>> ELF Header:
>> Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
>> Class: ELF32
>>
>> Data: 2's complement, little endian
>> Version: 1 (current)
>> OS/ABI: UNIX - System V
>> ABI Version: 0
>> Type: EXEC (Executable file)
>> Machine: MIPS R3000
>> Version: 0x1
>> Entry point address: 0x403bd0
>>
>> Start of program headers: 52 (bytes into file)
>> Start of section headers: 781968 (bytes into file)
>> Flags: 0x50001007, noreorder, pic,
>> cpic, o32, mips32
>>
>> Size of this header: 52 (bytes)
>> Size of program headers: 32 (bytes)
>> Number of program headers: 8
>> Size of section headers: 40 (bytes)
>> Number of section headers: 30
>> Section header string table index: 29
>>
>> Latom, big endian es little endian elteres van.
>>
>> Gyorasan utannaneztem, marha egyszeru mbig-endian mlittle-endian
>> optiokat kene hasznalni, csak a compiler ezeket nem ismeri.
>>
>> Turom meg, hatha ez lesz a jo irany.
>>
>> Andras
>>
>> 2013-04-25 14:00 időpontban Bukuli Norbert ezt írta:
>>
>>> Hasznos lehet a readelf is. Pl:
>>>
>>> $ readelf -h my_powerpc_program
>>>
>>> ELF Header:
>>> Magic: 7f 45 4c 46 01 02 01 00 00 00 00 00 00 00 00 00
>>> Class: ELF32
>>> Data: 2's complement, big endian
>>> Version: 1 (current)
>>> OS/ABI: UNIX - System V
>>> ABI Version: 0
>>> Type: EXEC (Executable file)
>>> Machine: PowerPC
>>> Version: 0x1
>>> Entry point address: 0x10001cb8
>>> Start of program headers: 52 (bytes into file)
>>> Start of section headers: 23156 (bytes into file)
>>> Flags: 0x0
>>> Size of this header: 52 (bytes)
>>> Size of program headers: 32 (bytes)
>>> Number of program headers: 8
>>> Size of section headers: 40 (bytes)
>>> Number of section headers: 40
>>> Section header string table index: 37
>>>
>>> $ readelf -h /bin/bash
>>>
>>> ELF Header:
>>> Magic: 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
>>> Class: ELF64
>>> Data: 2's complement, little endian
>>> Version: 1 (current)
>>> OS/ABI: UNIX - System V
>>> ABI Version: 0
>>> Type: EXEC (Executable file)
>>> Machine: Advanced Micro Devices X86-64
>>> Version: 0x1
>>> Entry point address: 0x419490
>>> Start of program headers: 64 (bytes into file)
>>> Start of section headers: 719608 (bytes into file)
>>> Flags: 0x0
>>> Size of this header: 64 (bytes)
>>> Size of program headers: 56 (bytes)
>>> Number of program headers: 10
>>> Size of section headers: 64 (bytes)
>>> Number of section headers: 27
>>> Section header string table index: 26
>>>
>>> 2013. április 25. 13:49 írta, <gabor at zahemszky.hu>:
>>>
>>>> 2013-04-25 13:48 időpontban Potoczky Andras ezt írta:
>>>>
>>>>> A boxon nem tudom kiadni, mert nincs file, de elozo emailben pont
>>>>> elkuldtem, a fordito gepen a file kimenetet. Valami ilyen hiba
>>>>> lesz
>>>>> amit irsz, nem ertelmezi, csak meg nem jottem ra mitol fogja
>>>>> ertelmezni.
>>>>
>>>> De azt is írtam, hogy egy a dobozról származó binárist (/bin/sh)
>>>> is
>>>> nézzél meg a fejlesztői gépeden és hasonlítsd össze őket.
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