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LEA behavior without a 64-bit destination is independent of address size - in particular LEA with 32-bit addressing and 64-bit destination is the same as LEA with 64-bit addressing and 32-bit destination. IOW checking merely i.prefix[ADDR_PREFIX] is insufficient. This also means wrong relocation types (R_X86_64_32S when R_X86_64_32 is needed) were used so far in such cases. Note that in one case in build_modrm_byte() the 64-bit check came too early altogether, and hence gets dropped in favor of the one included in the new helper. This is benign to non-64-bit code from all I can tell, but the failure to clear disp16 could have been a latent problem.
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.