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Prior to this patch, the information describing the AArch64 system registers was separate from the information describing which system registers are available depending on the CPU feature set. Indeed, the latter was implemented as a separate function from the main table with the system register information. This patch remedies this situation and puts the feature information into the system register table itself. This has several advantages: * Having all the information described in one place is easier to maintain. * The logic to check whether a system register is supported now becomes trivial (and much more efficient). Since this patch ended up touching every line of the system register table, I took the opportunity to make the formatting more consistent and remove some redundant comments. Note that there is still more refactoring that could be done along the same lines here (e.g. with the TLB instructions) but this seemed like a reasonable first pass. Testing: * Regression tested an x64 -> aarch64-none-elf cross binutils. * Built aarch64-none-elf cross toolchain, checked newlib startup code still works. * Bootstrapped binutils on aarch64-linux-gnu, regression tested. * Built aarch64 kernel using new binutils with allyesconfig. OK for master? If so, I'll need a maintainer to commit on my behalf since I don't have write access. Thanks, Alex --- include/ChangeLog: 2020-06-11 Alex Coplan <alex.coplan@arm.com> * opcode/aarch64.h (aarch64_sys_reg): Add required features to struct describing system registers. opcodes/ChangeLog: 2020-06-11 Alex Coplan <alex.coplan@arm.com> * aarch64-opc.c (SYSREG): New macro for describing system registers. (SR_CORE): Likewise. (SR_FEAT): Likewise. (SR_RNG): Likewise. (SR_V8_1): Likewise. (SR_V8_2): Likewise. (SR_V8_3): Likewise. (SR_V8_4): Likewise. (SR_PAN): Likewise. (SR_RAS): Likewise. (SR_SSBS): Likewise. (SR_SVE): Likewise. (SR_ID_PFR2): Likewise. (SR_PROFILE): Likewise. (SR_MEMTAG): Likewise. (SR_SCXTNUM): Likewise. (aarch64_sys_regs): Refactor to store feature information in the table. (aarch64_sys_reg_supported_p): Collapse logic for system registers that now describe their own features. (aarch64_pstatefield_supported_p): Likewise. |
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bfd | ||
binutils | ||
config | ||
contrib | ||
cpu | ||
elfcpp | ||
etc | ||
gas | ||
gdb | ||
gdbserver | ||
gdbsupport | ||
gnulib | ||
gold | ||
gprof | ||
include | ||
intl | ||
ld | ||
libctf | ||
libdecnumber | ||
libiberty | ||
opcodes | ||
readline | ||
sim | ||
texinfo | ||
zlib | ||
.cvsignore | ||
.gitattributes | ||
.gitignore | ||
ar-lib | ||
ChangeLog | ||
compile | ||
config-ml.in | ||
config.guess | ||
config.rpath | ||
config.sub | ||
configure | ||
configure.ac | ||
COPYING | ||
COPYING3 | ||
COPYING3.LIB | ||
COPYING.LIB | ||
COPYING.LIBGLOSS | ||
COPYING.NEWLIB | ||
depcomp | ||
djunpack.bat | ||
install-sh | ||
libtool.m4 | ||
lt~obsolete.m4 | ||
ltgcc.m4 | ||
ltmain.sh | ||
ltoptions.m4 | ||
ltsugar.m4 | ||
ltversion.m4 | ||
MAINTAINERS | ||
Makefile.def | ||
Makefile.in | ||
Makefile.tpl | ||
makefile.vms | ||
missing | ||
mkdep | ||
mkinstalldirs | ||
move-if-change | ||
multilib.am | ||
README | ||
README-maintainer-mode | ||
setup.com | ||
src-release.sh | ||
symlink-tree | ||
test-driver | ||
ylwrap |
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.