Re: Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

Re: Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

[Jian Wang]

Hi,

 I have a 64-bit mips cpu, and compiled a 64-bit application, but this
 application could not run. (the target is running Linux)
 The details is:
 1)if I compile the application with -mabi=n64, this program could not
 run, when I run it in the shell, it prompts "command not found"
 2)but if I compile the application with -mabi=n32, it runs well and
 gives the correct result.

 I am wondering why with "-mabi=n64", this program could not run? I
 checked the CP0(status register), Bit px=0b0, KX=0b1, SX=0b1, UX=0b1,
 it seems that in User Mode, it accepts 64-bit operation.

 Anybody could give me some help? Any comments is much appreciated!!

 BR/Dominic

Re: Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

[Jian Wang]

Hi,

 I have a 64-bit mips cpu, and compiled a 64-bit application, but this
 application could not run. (the target is running Linux)
 The details is:
 1)if I compile the application with -mabi=n64, this program could not
 run, when I run it in the shell, it prompts "command not found"
 2)but if I compile the application with -mabi=n32, it runs well and
 gives the correct result.

 I am wondering why with "-mabi=n64", this program could not run? I
 checked the CP0(status register), Bit px=0b0, KX=0b1, SX=0b1, UX=0b1,
 it seems that in User Mode, it accepts 64-bit operation.

 Anybody could give me some help? Any comments is much appreciated!!

 BR/Dominic

Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

[Jian Wang]

Hi,

 I have a 64-bit mips cpu, and compiled a 64-bit application, but this
 application could not run. (the target is running Linux)
 The details is:
 1)if I compile the application with -mabi=n64, this program could not
 run, when I run it in the shell, it prompts "command not found"
 2)but if I compile the application with -mabi=n32, it runs well and
 gives the correct result.

 I am wondering why with "-mabi=n64", this program could not run? I
 checked the CP0(status register), Bit px=0b0, KX=0b1, SX=0b1, UX=0b1,
 it seems that in User Mode, it accepts 64-bit operation.

 Anybody could give me some help? Any comments is much appreciated!!

 BR/Dominic

Re: Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

[Jan Rovins]

Jian Wang wrote:
> Hi,
>
>  I have a 64-bit mips cpu, and compiled a 64-bit application, but this
>  application could not run. (the target is running Linux)
>  The details is:
>  1)if I compile the application with -mabi=n64, this program could not
>  run, when I run it in the shell, it prompts "command not found"
>  2)but if I compile the application with -mabi=n32, it runs well and
>  gives the correct result.
>
>  I am wondering why with "-mabi=n64", this program could not run? I
>  checked the CP0(status register), Bit px=0b0, KX=0b1, SX=0b1, UX=0b1,
>  it seems that in User Mode, it accepts 64-bit operation.
>
>  Anybody could give me some help? Any comments is much appreciated!!
>
>  BR/Dominic
>
>   
Perhaps you do not have the "n64" system libraries set up correctly in 
userspace.
I have seen the "command not found" error when some fundamental 
libraries or the loader was missing.

Do you have a /lib64 & /user/lib64?
Run the file command on some of those libraries & see if they are n64 or 
n32 libs.

double check your ld.so.conf to make sure it points to every thing you need.
re run ldconfig if you change something.


Jan

Re: Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

[Dominic]

Hi Jan,

Thanks a lot for your precious reply! I try to use -static to compile
the program, then the 64-bit program can run, so it should be the
library related other than 64-bit instruction or addressing related.
Then I stored the 64-bit libraries in nfs, and mount it on the target
board, after adding the path to ld.so.conf and 'ldconfig', the program
compiled without -static still does not run. Shall I miss something?

Thanks!
BR/Dominic


On Fri, Apr 23, 2010 at 1:11 AM, Jan Rovins <janr@adax.com> wrote:
> Jian Wang wrote:
>>
>> Hi,
>>
>>  I have a 64-bit mips cpu, and compiled a 64-bit application, but this
>>  application could not run. (the target is running Linux)
>>  The details is:
>>  1)if I compile the application with -mabi=n64, this program could not
>>  run, when I run it in the shell, it prompts "command not found"
>>  2)but if I compile the application with -mabi=n32, it runs well and
>>  gives the correct result.
>>
>>  I am wondering why with "-mabi=n64", this program could not run? I
>>  checked the CP0(status register), Bit px=0b0, KX=0b1, SX=0b1, UX=0b1,
>>  it seems that in User Mode, it accepts 64-bit operation.
>>
>>  Anybody could give me some help? Any comments is much appreciated!!
>>
>>  BR/Dominic
>>
>>
>
> Perhaps you do not have the "n64" system libraries set up correctly in
> userspace.
> I have seen the "command not found" error when some fundamental libraries or
> the loader was missing.
>
> Do you have a /lib64 & /user/lib64?
> Run the file command on some of those libraries & see if they are n64 or n32
> libs.
>
> double check your ld.so.conf to make sure it points to every thing you need.
> re run ldconfig if you change something.
>
>
> Jan
>
>

Re: Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

[Dominic]

Hi Jan,

Thanks a lot for your precious reply! I try to use -static to compile
the program, then the 64-bit program can run, so it should be the
library related other than 64-bit instruction or addressing related.
Then I stored the 64-bit libraries in nfs, and mount it on the target
board, after adding the path to ld.so.conf and 'ldconfig', the program
compiled without -static still does not run. Shall I miss something?

Thanks!
BR/Dominic


On Fri, Apr 23, 2010 at 1:11 AM, Jan Rovins <janr@adax.com> wrote:
> Jian Wang wrote:
>>
>> Hi,
>>
>>  I have a 64-bit mips cpu, and compiled a 64-bit application, but this
>>  application could not run. (the target is running Linux)
>>  The details is:
>>  1)if I compile the application with -mabi=n64, this program could not
>>  run, when I run it in the shell, it prompts "command not found"
>>  2)but if I compile the application with -mabi=n32, it runs well and
>>  gives the correct result.
>>
>>  I am wondering why with "-mabi=n64", this program could not run? I
>>  checked the CP0(status register), Bit px=0b0, KX=0b1, SX=0b1, UX=0b1,
>>  it seems that in User Mode, it accepts 64-bit operation.
>>
>>  Anybody could give me some help? Any comments is much appreciated!!
>>
>>  BR/Dominic
>>
>>
>
> Perhaps you do not have the "n64" system libraries set up correctly in
> userspace.
> I have seen the "command not found" error when some fundamental libraries or
> the loader was missing.
>
> Do you have a /lib64 & /user/lib64?
> Run the file command on some of those libraries & see if they are n64 or n32
> libs.
>
> double check your ld.so.conf to make sure it points to every thing you need.
> re run ldconfig if you change something.
>
>
> Jan
>
>

Re: Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

[Geert Uytterhoeven]

On Fri, Apr 23, 2010 at 10:42, Dominic <dominicwj@gmail.com> wrote:
> Thanks a lot for your precious reply! I try to use -static to compile
> the program, then the 64-bit program can run, so it should be the
> library related other than 64-bit instruction or addressing related.
> Then I stored the 64-bit libraries in nfs, and mount it on the target
> board, after adding the path to ld.so.conf and 'ldconfig', the program
> compiled without -static still does not run. Shall I miss something?

`ldd <your_program>' may tell you...

> On Fri, Apr 23, 2010 at 1:11 AM, Jan Rovins <janr@adax.com> wrote:
>> Jian Wang wrote:
>>>
>>> Hi,
>>>
>>>  I have a 64-bit mips cpu, and compiled a 64-bit application, but this
>>>  application could not run. (the target is running Linux)
>>>  The details is:
>>>  1)if I compile the application with -mabi=n64, this program could not
>>>  run, when I run it in the shell, it prompts "command not found"
>>>  2)but if I compile the application with -mabi=n32, it runs well and
>>>  gives the correct result.
>>>
>>>  I am wondering why with "-mabi=n64", this program could not run? I
>>>  checked the CP0(status register), Bit px=0b0, KX=0b1, SX=0b1, UX=0b1,
>>>  it seems that in User Mode, it accepts 64-bit operation.
>>>
>>>  Anybody could give me some help? Any comments is much appreciated!!
>>>
>>>  BR/Dominic
>>>
>>>
>>
>> Perhaps you do not have the "n64" system libraries set up correctly in
>> userspace.
>> I have seen the "command not found" error when some fundamental libraries or
>> the loader was missing.
>>
>> Do you have a /lib64 & /user/lib64?
>> Run the file command on some of those libraries & see if they are n64 or n32
>> libs.
>>
>> double check your ld.so.conf to make sure it points to every thing you need.
>> re run ldconfig if you change something.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

Re: Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

[Geert Uytterhoeven]

On Fri, Apr 23, 2010 at 10:42, Dominic <dominicwj@gmail.com> wrote:
> Thanks a lot for your precious reply! I try to use -static to compile
> the program, then the 64-bit program can run, so it should be the
> library related other than 64-bit instruction or addressing related.
> Then I stored the 64-bit libraries in nfs, and mount it on the target
> board, after adding the path to ld.so.conf and 'ldconfig', the program
> compiled without -static still does not run. Shall I miss something?

`ldd <your_program>' may tell you...

> On Fri, Apr 23, 2010 at 1:11 AM, Jan Rovins <janr@adax.com> wrote:
>> Jian Wang wrote:
>>>
>>> Hi,
>>>
>>>  I have a 64-bit mips cpu, and compiled a 64-bit application, but this
>>>  application could not run. (the target is running Linux)
>>>  The details is:
>>>  1)if I compile the application with -mabi=n64, this program could not
>>>  run, when I run it in the shell, it prompts "command not found"
>>>  2)but if I compile the application with -mabi=n32, it runs well and
>>>  gives the correct result.
>>>
>>>  I am wondering why with "-mabi=n64", this program could not run? I
>>>  checked the CP0(status register), Bit px=0b0, KX=0b1, SX=0b1, UX=0b1,
>>>  it seems that in User Mode, it accepts 64-bit operation.
>>>
>>>  Anybody could give me some help? Any comments is much appreciated!!
>>>
>>>  BR/Dominic
>>>
>>>
>>
>> Perhaps you do not have the "n64" system libraries set up correctly in
>> userspace.
>> I have seen the "command not found" error when some fundamental libraries or
>> the loader was missing.
>>
>> Do you have a /lib64 & /user/lib64?
>> Run the file command on some of those libraries & see if they are n64 or n32
>> libs.
>>
>> double check your ld.so.conf to make sure it points to every thing you need.
>> re run ldconfig if you change something.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

Re: Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

[Alexander Clouter]

Dominic <dominicwj@gmail.com> wrote:
> 
> Thanks a lot for your precious reply! I try to use -static to compile
> the program, then the 64-bit program can run, so it should be the
> library related other than 64-bit instruction or addressing related.
> Then I stored the 64-bit libraries in nfs, and mount it on the target
> board, after adding the path to ld.so.conf and 'ldconfig', the program
> compiled without -static still does not run. Shall I miss something?
> 
On your host, you can type something like:
----
alex@berk:/usr/src/wag54g$ readelf -d buildroot/output/target/usr/sbin/ip6tables-multi  | grep Shared
 0x00000001 (NEEDED)                     Shared library: [libip6tc.so.0]
 0x00000001 (NEEDED)                     Shared library: [libxtables.so.4]
 0x00000001 (NEEDED)                     Shared library: [libdl.so.0]
 0x00000001 (NEEDED)                     Shared library: [libm.so.0]
 0x00000001 (NEEDED)                     Shared library: [libc.so.0]
----

This will list all the libraries that you need installed[1], I'm guessin 
you have missed one.

You can look at the output of 'readelf -a' to try to see what might be 
missing.

Cheers

[1] in addition to the interpreter required (for example 'ld-uClibc') 
	and the main C library being used:
	readelf -l buildroot/output/target/usr/sbin/ip6tables-multi

-- 
Alexander Clouter
.sigmonster says: "Ninety percent of baseball is half mental."
                  		-- Yogi Berra

Re: Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

[Dominic]

Hi Alexander, Jan & Greet

Much thanks for your advice, I have solve this problem, thanks a lot!

BR/Dominic

On Fri, Apr 23, 2010 at 5:34 PM, Alexander Clouter <alex@digriz.org.uk> wrote:
> Dominic <dominicwj@gmail.com> wrote:
>>
>> Thanks a lot for your precious reply! I try to use -static to compile
>> the program, then the 64-bit program can run, so it should be the
>> library related other than 64-bit instruction or addressing related.
>> Then I stored the 64-bit libraries in nfs, and mount it on the target
>> board, after adding the path to ld.so.conf and 'ldconfig', the program
>> compiled without -static still does not run. Shall I miss something?
>>
> On your host, you can type something like:
> ----
> alex@berk:/usr/src/wag54g$ readelf -d buildroot/output/target/usr/sbin/ip6tables-multi  | grep Shared
>  0x00000001 (NEEDED)                     Shared library: [libip6tc.so.0]
>  0x00000001 (NEEDED)                     Shared library: [libxtables.so.4]
>  0x00000001 (NEEDED)                     Shared library: [libdl.so.0]
>  0x00000001 (NEEDED)                     Shared library: [libm.so.0]
>  0x00000001 (NEEDED)                     Shared library: [libc.so.0]
> ----
>
> This will list all the libraries that you need installed[1], I'm guessin
> you have missed one.
>
> You can look at the output of 'readelf -a' to try to see what might be
> missing.
>
> Cheers
>
> [1] in addition to the interpreter required (for example 'ld-uClibc')
>        and the main C library being used:
>        readelf -l buildroot/output/target/usr/sbin/ip6tables-multi
>
> --
> Alexander Clouter
> .sigmonster says: "Ninety percent of baseball is half mental."
>                                -- Yogi Berra
>
>
>

Re: Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

[Dominic]

Hi Alexander, Jan & Greet

Much thanks for your advice, I have solve this problem, thanks a lot!

BR/Dominic

On Fri, Apr 23, 2010 at 5:34 PM, Alexander Clouter <alex@digriz.org.uk> wrote:
> Dominic <dominicwj@gmail.com> wrote:
>>
>> Thanks a lot for your precious reply! I try to use -static to compile
>> the program, then the 64-bit program can run, so it should be the
>> library related other than 64-bit instruction or addressing related.
>> Then I stored the 64-bit libraries in nfs, and mount it on the target
>> board, after adding the path to ld.so.conf and 'ldconfig', the program
>> compiled without -static still does not run. Shall I miss something?
>>
> On your host, you can type something like:
> ----
> alex@berk:/usr/src/wag54g$ readelf -d buildroot/output/target/usr/sbin/ip6tables-multi  | grep Shared
>  0x00000001 (NEEDED)                     Shared library: [libip6tc.so.0]
>  0x00000001 (NEEDED)                     Shared library: [libxtables.so.4]
>  0x00000001 (NEEDED)                     Shared library: [libdl.so.0]
>  0x00000001 (NEEDED)                     Shared library: [libm.so.0]
>  0x00000001 (NEEDED)                     Shared library: [libc.so.0]
> ----
>
> This will list all the libraries that you need installed[1], I'm guessin
> you have missed one.
>
> You can look at the output of 'readelf -a' to try to see what might be
> missing.
>
> Cheers
>
> [1] in addition to the interpreter required (for example 'ld-uClibc')
>        and the main C library being used:
>        readelf -l buildroot/output/target/usr/sbin/ip6tables-multi
>
> --
> Alexander Clouter
> .sigmonster says: "Ninety percent of baseball is half mental."
>                                -- Yogi Berra
>
>
>

Re: Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

[Dominic]

Hi,

I am trying to understand the boot process of Linux Kernel, especially
on MIPS, I am pretty new to these. Could anybody introduce some
documents or the boot logs on some MIPS platform? Any reply is much
appreciated!

Thank you!

BR/Dominic

Re: Ask help:why my 64-bit ELF file could not run at the 64-bit mips cpu

[Dominic]

Hi,

I am trying to understand the boot process of Linux Kernel, especially
on MIPS, I am pretty new to these. Could anybody introduce some
documents or the boot logs on some MIPS platform? Any reply is much
appreciated!

Thank you!

BR/Dominic