setcontext() and setcontext() on ARM processor

ranjith kumar <ranjithproxy@xxxxxxxxx> · Wed, 18 Nov 2009 16:26:34 +0530

Hi,

I am using ARM9 amd ARM11 processors.

 Why setcontext() and getcontext() functions are NOT  implemented on
ARM processor??

I am trying to compile a .c file which calls above functions. I am
getting the following warnings:
_____________________________________________________________________________
armv5tel-redhat-linux-gnueabi-gcc 2.c
   /tmp/ccUn759T.o: In function `main':
   2.c:(.text+0x34): warning: warning: getcontext is not implemented
and will always fail
   /tmp/ccUn759T.o: In function `func':
   2.c:(.text+0xd8): warning: warning: setcontext is not implemented
and will always fail
_______________________________________________________________________
When I run the executable setcontext() function is returning -1.

Please tell me why these functions are not implemented on ARM processor??
Are there any other functions equal to above functions??
Please let me know.

Thanks in advance.