If-then instruction for TMS470 assembler

I am changing from using Code Red to COde Composer for our LM3S9B96 project.

We use the widgetmutexget function to implement semaphores which uses in-line assembly and worked fine with the GCC toolchain.

  __asm("    mov      r1, #1\n"
        "    ldrexb   r2, [r0]\n"
        "    cmp      r2, #0\n"
        "    it       eq\n"
        "    strexbeq r2, r1, [r0]\n"
        "    mov      r0, r2\n"
        "    bx       lr\n"
#if !defined (ccs)
        : "=r" (ulRet));

return(ulRet)
#else
#pragma diag_suppress=994
)
#endif
  ;

The TMS470 assembler gives a

Empty or Invalid condition code

it eq