Pragma callback to insert text in input buffer?

["Jan Hoogerbrugge" <hoogerbrugge at hotmail dot com>]

Hi,

I need to handle certain pragmas such that something special is generated in 
the assembly output roughly at the place that corresponds to the place of 
the pragma in the source code. Doing this in gcc in a clean way is not 
possible I guess, so I have to apply a hack. The hack that I want to apply 
is to insert a text like "asm volatile(...)" in the input buffer of gcc by 
the pragma callback handler. Gcc will encounter this text after the #pragma 
is handled. Is this possible? If so how? I hope that cpp_push_buffer() makes 
this possible.

Regards,
Jan