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Dunno if this helps, but I found that when linking a.out, it aligned the start of each compilation unit on a 16 byte boundary. This is set in binutils/bfd/cpu-arm.c with the macro 'N'. Argument 8 is used - it raises it to the power 2 and byte aligns that much. So we changed it locally from 4 to 2. HTH! Luke Diamand "William A. Gatliff" wrote: > > Guys: > > I'm trying to implement something similar to the DEVTAB stuff in eCos, > but having some problems. > > What I want to be able to do is allocate data structures in random > source modules to a particular link section, and have the linker gather > them up and locate them contiguously. For example: > > typedef struct {int x;} my_struct; > > #define DEVTAB(name, x) my_struct name > __attribute__((section(".devtab")) = {x} > > in foo.c: > > DEVTAB( my_driver, 10 ); > > What I have found, is that when the linker (binutils 2.9.1, as well as > recent snapshots) finds multiple DEVTABs in a single module, it jams > them all together according to the alignment requirements for the > architecture, as expected. However, when the linker locates DEVTABs > from different modules, it puts big gaps between them. > > I know that eCos is doing this successfully, but the source code doesn't > tell me how they're doing it. Any ideas? > > Thanks! > > b.g. > > ------ > Want more information? See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/ > Want to unsubscribe? Send a note to crossgcc-unsubscribe@sourceware.cygnus.com -- Virata http://www.virata.com Cambridge Tel: +44 1223 566919 Fax: +44 1223 566915 ------ Want more information? See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/ Want to unsubscribe? Send a note to crossgcc-unsubscribe@sourceware.cygnus.com
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