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In the SPARC V9 (and later) versions of the SPARC specification, the section C.1.1 "Register Names" specifies that: "asr_reg. An asr_reg is an Ancillary State Register name. It may have one of the following values: %asr16-%asr31" The rationale of having this restriction was that the registers from 16 to 31 are reserved to implementations, and are therefore "non-V9". It also assumes that the existing ASR registers in the range 0..31 will have their own names such as %y, that can be used to access such registers. However, this is problematic. When a new ASR register is introduced, such as %mcdper a.k.a. %asr14, it is useful to be able to use %asr14 in order to not depend on the latest version of the assembler. The Solaris assembler is lax and allows to assembly instructions referring to %asr0 to %asr31. This patch makes the GNU assembler to mimic that behavior. gas/ChangeLog: 2016-03-24 Jose E. Marchesi <jose.marchesi@oracle.com> * config/tc-sparc.c (sparc_ip): Remove the V9 restriction on ASR registers to be in the 16..31 range.
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.