Re: [Pgubook-readers] Question about chapter 4

[Alexander Kapshuk]

Somehow your func binary ended up having its ELF header corrupted.
Can you please run
(1). readelf -h func
(2). mv func func.broken; as func.s -o func.o; ld func.o -o func
(3). readelf -h func

And send back the output generated by the commands above.


On Sat, Jan 26, 2019 at 4:38 PM Arnkæll <address@hidden> wrote:
>
> ELF 32-bit LSB executable, Intel 80386, version 1(sysv), corrupted program 
> header size, not stripped
>
> uh oh lol
>
> On Sat, 26 Jan 2019 at 10:37, Alexander Kapshuk <address@hidden> wrote:
>>
>> On Sat, Jan 26, 2019 at 4:35 PM Arnkæll <address@hidden> wrote:
>> >
>> > oh there was more to that command,sorry im not sure what power-binary is 
>> > lol im really new to this sort of thing
>> >
>> > On Sat, 26 Jan 2019 at 10:34, Arnkæll <address@hidden> wrote:
>> >>
>> >> sure the output of uname -a is   Linux johnathan-VirtualBox 
>> >> 4.15.0-43-generic #46-Ubuntu SMP Thu Dec 6 14:44:00 UTC 2018 i686 athlon 
>> >> i686 GNU/Linux
>> >>
>> >> as for the commands i use
>> >> as func.s -o func.o
>> >> ld func.o -o func
>> >> ./func
>> >>
>> >> On Sat, 26 Jan 2019 at 10:30, Alexander Kapshuk <address@hidden> wrote:
>> >>>
>> >>> On Sat, Jan 26, 2019 at 4:19 PM Arnkæll <address@hidden> wrote:
>> >>> >
>> >>> > hi i just have a quick question, ill attach my source incase i've 
>> >>> > mistyped
>> >>> > anyway i'm doing the book's exercises in a vm of ubuntu mate, i was 
>> >>> > having no issues until trying to run the first program in chapter 4, 
>> >>> > it compiles and links just fine but when i try to run it i get this 
>> >>> > error: 'Cannot execute binary file: Exec format error'
>> >>> > attached is my source, i believe that the problem may be that i am 
>> >>> > running in a VM but if so im not sure what to do, any help would be 
>> >>> > appreciated.
>> >>> > regards,
>> >>> > Johnathan
>> >>> >
>> >>> >
>> >>> >
>> >>> > _______________________________________________
>> >>> > Pgubook-readers mailing list
>> >>> > address@hidden
>> >>> > https://lists.nongnu.org/mailman/listinfo/pgubook-readers
>> >>>
>> >>> Can you please post the commands you use to assemble and link your code?
>> >>> What's the output of:
>> >>> uname -a
>> >>> file /path/to/power-binary
>>
>> file func