ARM Thumb interworking in inline assembly __asm

hello,

i'm having problem with compiling inline assembly code.
The error is as below
"Error: selected processor does not support Thumb mode `mrc p15,0,r3,c1,c0,0'"

the code snippet is
__asm volatile("mrc p15,0,r3,c1,c0,0");

i'm compiling the C file in thumb mode with (-mthumb)

i have tried using the attribute to switch to ARM mode( "__attribute__((target("arm")))" ) as well but this has no effect.

error log :
C:\Users\PRASHA~1\AppData\Local\Temp\ccIbsb68.s: Assembler messages:
C:\Users\PRASHA~1\AppData\Local\Temp\ccIbsb68.s:27: Error: selected processor does not support Thumb mode `mrc p15,0,r3,c1,c0,0'
C:\Users\PRASHA~1\AppData\Local\Temp\ccIbsb68.s:38: Error: selected processor does not support Thumb mode `mcr p15,0,r3,c1,c0,0'
C:\Users\PRASHA~1\AppData\Local\Temp\ccIbsb68.s:208: Error: selected processor does not support Thumb mode `mrc p15,0,r3,c1,c0,0'
C:\Users\PRASHA~1\AppData\Local\Temp\ccIbsb68.s:219: Error: selected processor does not support Thumb mode `mcr p15,0,r3,c1,c0,0'

-Thanks,
Prasanth Subramani