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When assembling a forward reference the symbol will be unknown and so during do_t_adr we cannot set the thumb bit. The bit it set so early to prevent relaxations that are invalid. i.e. relaxing a Thumb2 to Thumb1 insn when the symbol is Thumb. But because it's done so early we miss the case for forward references. This patch changes it so that we additionally check the thumb bit during the internal relocation processing. In principle we should be able to only set the bit during reloc processing but that would require changes to the other relocations that the instruction could be relaxed to. This approach still allows early relaxations (which means that we have less iteration of internal reloc processing) while still fixing the forward reference case. gas/ChangeLog: 2021-05-24 Tamar Christina <tamar.christina@arm.com> PR gas/25235 * config/tc-arm.c (md_convert_frag): Set LSB when Thumb symbol. (relax_adr): Thumb symbols 4 bytes. * testsuite/gas/arm/pr25235.d: New test. * testsuite/gas/arm/pr25235.s: New test.
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.