error: no data type for mode ".."

[Bingfeng Mei]

Hello,

I tried to define a new machine mode for a data type only allocated to
certain registers, e.g., MAC registers.  I first used an unused PDI mode
(same as Blackfin porting).  

In target-modes.def file:
PARTIAL_INT_MODE (DI);

Then in my test program, I tried to define a new data type using PDI
mode.

typedef int __attribute__ ((mode (PDI)))  MREG;

But GCC reports error: 

tst.c:13: error: no data type for mode 'PDI'

On this typedef statement. 


How can I use the newly defined MODE to specify a new data type? I
cannot find any example for Blackfin, where PDI mode is used to
represennt 40-bit MAC similarly.


I also tries to define a new INT_MODE by:
INT_MODE(PDI, 8).

The error message is the same.

Any hint?  Thanks in advance. 


Cheers,
Bingfeng Mei

Broadcom UK