Cortex-M23 assembly instrutions not accepted

[Lyn Mervyn Roberts]

asm.c

void vRaisePrivilege( void ) __attribute__( ( naked ) );
void vResetPrivilege( void ) __attribute__( ( naked ) );

void vRaisePrivilege( void )
{
    __asm volatile
    (
        " mrs r0, control \n"
        " movs r1, #1 \n"
        " bics r0, r1 \n"
        " msr control, r0 \n"
        " bx lr \n"
        ::: "r0", "r1", "memory"
    );
}
/*-----------------------------------------------------------*/

void vResetPrivilege( void )
{
    __asm volatile
    (
        " mrs r0, control \n"
        " movs r1, #1 \n"
        " orrs r0, r1 \n"
        " msr control, r0 \n"
        " bx lr \n"
        ::: "r0", "r1", "memory"
    );
}

arm-none-eabi-gcc -mthumb -march="armv8-m.main" -o asm.o -c asm.c Compiles

arm-none-eabi-gcc -mthumb -march="armv8-m.base" -o asm.o -c asm.c

C:\Users\Lyn.CT\AppData\Local\Temp\ccILqoT0.s: Assembler messages:
C:\Users\Lyn.CT\AppData\Local\Temp\ccILqoT0.s:28: Error: instruction not supported in Thumb16 mode -- `bics r0,r1'
C:\Users\Lyn.CT\AppData\Local\Temp\ccILqoT0.s:52: Error: instruction not supported in Thumb16 mode -- `orrs r0,r1'

[David Ramunno (ramdav)]

cortex m23 has no it instruction... removed comment