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* [Buildroot] undefined __aeabi_read_tp
@ 2007-02-22 20:58 James Newell
  2007-02-22 21:15 ` James Newell
  0 siblings, 1 reply; 3+ messages in thread
From: James Newell @ 2007-02-22 20:58 UTC (permalink / raw)
  To: buildroot

I was building the ubuntu upstart package, and ran into an undefined
__aeabi_read_tp call.  

The gcc defines:
-mtp=name
           Specify the access model for the thread local storage pointer.  The
           valid models are soft, which generates calls to "__aeabi_read_tp",
           cp15, which fetches the thread pointer from "cp15" directly (sup-
           ported in the arm6k architecture), and auto, which uses the best
           available method for the selected processor.  The default setting
           is auto.

The __aeabi_read_tp is not defined in the uclibc libs:
[jnewell at ndragon staging_dir]$ nm $(find . -type f -name "*.a")|grep
eabi_read_tp
         U __aeabi_read_tp
         U __aeabi_read_tp
         U __aeabi_read_tp
         U __aeabi_read_tp
         U __aeabi_read_tp
         U __aeabi_read_tp
         U __aeabi_read_tp
         U __aeabi_read_tp
         U __aeabi_read_tp
         U __aeabi_read_tp
         U __aeabi_read_tp
         U __aeabi_read_tp

Does anyone know who should be defining this call? 

Thanks,
Jim

Some of my config:
[jnewell at ndragon buildroot]$ grep -e ^BR2_GCC -e ABI -e THREAD .config
# BR2_ARM_OABI is not set
BR2_ARM_EABI=y
# BR2_PTHREADS_NONE is not set
# BR2_PTHREADS is not set
# BR2_PTHREADS_OLD is not set
BR2_PTHREADS_NATIVE=y
# BR2_PTHREAD_DEBUG is not set
BR2_GCC_VERSION_4_2=y
BR2_GCC_IS_SNAP=y
BR2_GCC_SNAP_DATE="20070214"
BR2_GCC_VERSION="4.2"
BR2_GCC_SHARED_LIBGCC=y
BR2_SOFT_FLOAT=y

 

^ permalink raw reply	[flat|nested] 3+ messages in thread
* [Buildroot] undefined __aeabi_read_tp
  2007-02-22 20:58 [Buildroot] undefined __aeabi_read_tp James Newell
@ 2007-02-22 21:15 ` James Newell
  2007-03-07 14:47   ` Bernhard Fischer
  0 siblings, 1 reply; 3+ messages in thread
From: James Newell @ 2007-02-22 21:15 UTC (permalink / raw)
  To: buildroot

Hmmmm .. I found them defined in glibc2.5:
$findsym __aeabi_read_tp
Searching library: ./arm-926ejs-linux-gnueabi/lib/libc_nonshared.a
  Found object __aeabi_read_tp in    
library ./arm-926ejs-linux-gnueabi/lib/libc_nonshared.a
Searching library: ./arm-926ejs-linux-gnueabi/lib/libc.a
  Found object __aeabi_read_tp in
library ./arm-926ejs-linux-gnueabi/lib/libc.a

Could my uclibc be mis-configured for threading?
Thanks,
Jim

On Thu, 2007-02-22 at 15:58 -0500, James Newell wrote:
> I was building the ubuntu upstart package, and ran into an undefined
> __aeabi_read_tp call.  
> 
> The gcc defines:
> -mtp=name
>            Specify the access model for the thread local storage pointer.  The
>            valid models are soft, which generates calls to "__aeabi_read_tp",
>            cp15, which fetches the thread pointer from "cp15" directly (sup-
>            ported in the arm6k architecture), and auto, which uses the best
>            available method for the selected processor.  The default setting
>            is auto.
> 
> The __aeabi_read_tp is not defined in the uclibc libs:
> [jnewell at ndragon staging_dir]$ nm $(find . -type f -name "*.a")|grep
> eabi_read_tp
>          U __aeabi_read_tp
>          U __aeabi_read_tp
>          U __aeabi_read_tp
>          U __aeabi_read_tp
>          U __aeabi_read_tp
>          U __aeabi_read_tp
>          U __aeabi_read_tp
>          U __aeabi_read_tp
>          U __aeabi_read_tp
>          U __aeabi_read_tp
>          U __aeabi_read_tp
>          U __aeabi_read_tp
> 
> Does anyone know who should be defining this call? 
> 
> Thanks,
> Jim
> 
> Some of my config:
> [jnewell at ndragon buildroot]$ grep -e ^BR2_GCC -e ABI -e THREAD .config
> # BR2_ARM_OABI is not set
> BR2_ARM_EABI=y
> # BR2_PTHREADS_NONE is not set
> # BR2_PTHREADS is not set
> # BR2_PTHREADS_OLD is not set
> BR2_PTHREADS_NATIVE=y
> # BR2_PTHREAD_DEBUG is not set
> BR2_GCC_VERSION_4_2=y
> BR2_GCC_IS_SNAP=y
> BR2_GCC_SNAP_DATE="20070214"
> BR2_GCC_VERSION="4.2"
> BR2_GCC_SHARED_LIBGCC=y
> BR2_SOFT_FLOAT=y
> 
>  
> 
> _______________________________________________
> buildroot mailing list
> buildroot at uclibc.org
> http://busybox.net/mailman/listinfo/buildroot
> 

^ permalink raw reply	[flat|nested] 3+ messages in thread
* [Buildroot] undefined __aeabi_read_tp
  2007-02-22 21:15 ` James Newell
@ 2007-03-07 14:47   ` Bernhard Fischer
  0 siblings, 0 replies; 3+ messages in thread
From: Bernhard Fischer @ 2007-03-07 14:47 UTC (permalink / raw)
  To: buildroot

On Thu, Feb 22, 2007 at 04:15:38PM -0500, James Newell wrote:
>Hmmmm .. I found them defined in glibc2.5:
>$findsym __aeabi_read_tp
>Searching library: ./arm-926ejs-linux-gnueabi/lib/libc_nonshared.a
>  Found object __aeabi_read_tp in    
>library ./arm-926ejs-linux-gnueabi/lib/libc_nonshared.a
>Searching library: ./arm-926ejs-linux-gnueabi/lib/libc.a
>  Found object __aeabi_read_tp in
>library ./arm-926ejs-linux-gnueabi/lib/libc.a
>
>Could my uclibc be mis-configured for threading?

First, you should direct this to the uClibc list, probably.
Second, AFAIK only linuxthreads.old work on arm.

HTH,
>Thanks,
>Jim
>
>On Thu, 2007-02-22 at 15:58 -0500, James Newell wrote:
>> I was building the ubuntu upstart package, and ran into an undefined
>> __aeabi_read_tp call.  
>> 
>> The gcc defines:
>> -mtp=name
>>            Specify the access model for the thread local storage pointer.  The
>>            valid models are soft, which generates calls to "__aeabi_read_tp",
>>            cp15, which fetches the thread pointer from "cp15" directly (sup-
>>            ported in the arm6k architecture), and auto, which uses the best
>>            available method for the selected processor.  The default setting
>>            is auto.
>> 
>> The __aeabi_read_tp is not defined in the uclibc libs:
>> [jnewell at ndragon staging_dir]$ nm $(find . -type f -name "*.a")|grep
>> eabi_read_tp
>>          U __aeabi_read_tp
>>          U __aeabi_read_tp
>>          U __aeabi_read_tp
>>          U __aeabi_read_tp
>>          U __aeabi_read_tp
>>          U __aeabi_read_tp
>>          U __aeabi_read_tp
>>          U __aeabi_read_tp
>>          U __aeabi_read_tp
>>          U __aeabi_read_tp
>>          U __aeabi_read_tp
>>          U __aeabi_read_tp
>> 
>> Does anyone know who should be defining this call? 
>> 
>> Thanks,
>> Jim
>> 
>> Some of my config:
>> [jnewell at ndragon buildroot]$ grep -e ^BR2_GCC -e ABI -e THREAD .config
>> # BR2_ARM_OABI is not set
>> BR2_ARM_EABI=y
>> # BR2_PTHREADS_NONE is not set
>> # BR2_PTHREADS is not set
>> # BR2_PTHREADS_OLD is not set
>> BR2_PTHREADS_NATIVE=y
>> # BR2_PTHREAD_DEBUG is not set
>> BR2_GCC_VERSION_4_2=y
>> BR2_GCC_IS_SNAP=y
>> BR2_GCC_SNAP_DATE="20070214"
>> BR2_GCC_VERSION="4.2"
>> BR2_GCC_SHARED_LIBGCC=y
>> BR2_SOFT_FLOAT=y
>> 
>>  
>> 
>> _______________________________________________
>> buildroot mailing list
>> buildroot at uclibc.org
>> http://busybox.net/mailman/listinfo/buildroot
>> 
>
>_______________________________________________
>buildroot mailing list
>buildroot at uclibc.org
>http://busybox.net/mailman/listinfo/buildroot
>

^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2007-03-07 14:47 UTC | newest]

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2007-02-22 20:58 [Buildroot] undefined __aeabi_read_tp James Newell
2007-02-22 21:15 ` James Newell
2007-03-07 14:47   ` Bernhard Fischer

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