[Buildroot] undefined __aeabi_read_tp

[James Newell]

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
> 
>  
> 
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