On Tue, Jan 17, 2006 at 01:35:59PM +0100, Philippe De Muyter wrote: > Gunther Nikl wrote : > > On Sat, Jan 14, 2006 at 02:21:20AM +0100, Philippe De Muyter wrote: > > > For an embedded mmu-less m68k target, I would like to generate code > > > that will always run at a fixed place in memory, thus not needing to be > > > PIC, > > > but that would access a data+bss segment that could be anywhere in memory, > > > thus needing accesses to the data segment via %a5 and an offset table. > > > > > > 1. Does that possibility already exist in gcc (I did not find it) ? > > > -msep-data currently does PI-text + PI-data. > > > > AFAICT, this doesn't exist within mainline GCC. The AmigaOS port (which > > isn't part of the official sources) implements this scheme, either with > > 16bit or 32bit displacements. The latter requires a 68020 or better. > > Note, you need binutils support as well. > > Where is that AmigaOS port availaible ? > That seems to be an easier solution.
GCC diffs upto 3.4.0 are available here: ftp://ftp.back2roots.org/pub/geekgadgets/amiga/m68k/alpha/gcc/ There is a sourceforge project called "adtools" which is intended to have the AmigaOS/68k GCC port. Currently those patches are not integrated yet. However, the binutils support is available there. http://www.sourceforge.net/projects/adtools/ Its probably impossible to integrate anything from there into official sources because its imposible to tell who participated in developing these features. Gunther
