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The current code to compute relative distance in the wrap around case does not handle the edge case of the target (after adjusting for implicit PC increment) being exactly half of the wrap around distance. This patch fixes that and adds a testcase. The range for a forward relative jump call is 4096 bytes ((2 * 2047) + (2 bytes for the implicit PC increment)). If the target of the jump is at a distance of 4098 bytes, it is out of range for a forward jump - however, a backward jump can still reach that address if pmem-wrap-around is 8192. Assume address 0 has rjmp to address 4098. With a wrap around of 8192 and *without* adjusting for the implicit PC increment of 2 bytes, rjmp .-4096 will jump to address 4096 (wrap around at 8192 and decreasing addresses from then on). Adjusting 2 bytes for the implicit PC increment, the actual target is 4098. avr_relative_distance_considering_wrap_around though, does the wrap around only if the passed in distance is less than half of the wrap around distance. In this case, it is exactly equal to half (original distance 4098, adjusted distance of 4096 and wraparound of 8192), and the bypassed wrap around causes the reloc overflow error. Fix by wrapping around even if adjusted distance is equal to half of wrap around distance.
README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.