how to parse the special define

Ian Lance Taylor iant@google.com
Thu Jan 6 05:47:00 GMT 2011


bb c <chenbenbin@gmail.com> writes:

>      Yes, Gcc don't suport it now. Could we use the pragma to set the
> variable attribute and handle the attribute at backend to asm?

I suppose that would be possible, although just using a variable
attribute would be simpler if you don't have existing code.

>       "The usual way to put a variable at a specific memory address
> would be to use an attribute to put the variable in a specific section
> and to use a linker script to put that section at a specific address."
>
>        Could you tell me how to use the variable attribute to put the
> varibable to a specific section? Thanks.

In

http://gcc.gnu.org/onlinedocs/gcc-4.5.2/gcc/Variable-Attributes.html#Variable-Attributes

search for section ("section-name").

Ian



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