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Hi, [....] > GLOBL short_test, entry > > text > entry: move.l short_test.w,d0 > bra entry You are explicitly using the adressing mode "Absolute Short" by adding the ".w" to your operand. In this mode the address range goes from 0...$7FFF and $FFFF8000... $FFFFFFFF. or in other words from -32768 ... 32767. That's no bug - it's a (Motorola) addressing feature! > I link these together (starting with the first), with a linker scriptthat > specifies BSS to start at $400, so that short addressing is possible for the > first variables. > > However, when I get past the $8000 limit (by using more space for test_start > in this example), I get the following code after linking (output format is > binary, TEXT is at $00e00000): > > 0: 4e70 reset > 2: 4ef9 00e0 0008 jmp 0xe00008 > 8: 2038 8000 movel 0xffff8000,%d0 ; <---- this is not OK > c: 60fa bras 0x8 > > Which means that the linker generated a relocation into the BSS segment for > a short access which now points to $FFFF8000 instead of $00008000 (where the > RAM is) - without giving me any warning. > > How do I make the linker produce warnings (or even errors) in this case? As said - no linker Problem - use absolute addressing without the .w suffix for an access above $7FFF. The feature is, to provide a faster and shorter access for 1. system variables (0...$7FFF) and 2. where you should put periperals or the provided onboard modules like TPU, SIM, QSM ... (MC683xx) are mapped in. Thats from $FFFF8000...$FFFFFFFF. Richard. --- Dipl.-Ing. (FH) Richard Apeltauer FH Ravensburg-Weingarten, Labor Robotertechnik Doggenriedstrasse, D-88250 Weingarten Tel: +49-751-501708 Fax: +49-751-49240 WWW: http://robotik.fbp.fh-weingarten.de _______________________________________________ New CrossGCC FAQ: http://www.objsw.com/CrossGCC _______________________________________________ To remove yourself from the crossgcc list, send mail to crossgcc-request@cygnus.com with the text 'unsubscribe' (without the quotes) in the body of the message.