------- Additional Comments From ericw at evcohs dot com 2005-02-28 22:01 ------- Subject: Re: static initialization .data redundantly copied to ram prior to use.
bjoern dot m dot haase at web dot de wrote: >------- Additional Comments From bjoern dot m dot haase at web dot de >2005-02-28 21:58 ------- >I think the key problem is, that C language permits you to pass pointers to >your static const data structures to other functions. Possibly functions that >are not located within the same source file. While functions whithin the >source file that defines the const data structures could in principle know >that these data should be located in program memory and that they should be >accessed by using lpm instructions, I do not see how to pass this knowledge to >externally defined functions. Only solution in my opinion would be to define >different classes of pointers. > > > > Which is a *known issue* for the AVR port. At one point Svein Seldal was working on a patch to allow pointers to different memory spaces, but that was some time ago and I haven't heard from him about the status of his work. Eric -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20243
