Go to file
Nelson Chu 00d4d1b0a3 RISC-V: Support to add implicit extensions for G.
G is a special case, consider the ISA spec github issue as follows,
https://github.com/riscv/riscv-isa-manual/issues/575

My understand is that - i, m, a, f and d extensions are not g's implicit
extensions, they are g's expansions.  The zifencei is the implicit extension
of g, and so is zicsr, since it is implicited by f (or i2p1).  However,
we add the g with the RISCV_UNKNOWN_VERSION to the subset list, and it
will not output to the arch string, it is only used to check what implicit
extensions are need to be added.

	bfd/
	* elfxx-riscv.c (riscv_parse_add_subset): Allow to add g with
	RISCV_UNKNOWN_VERSION versions.
	(riscv_parse_std_ext): Add g to the subset list, we only use it
	to add the implicit extensions, but won't output it to arch string.
	(riscv_parse_add_implicit_subsets): Add implicit zicsr and zifencei
	for g extension.
	(riscv_arch_str1): Do not output g to the arch string.
	* elfxx-riscv.h (RISCV_UNKNOWN_VERSION): Moved to include/opcode/riscv.h.

	gas/
	* testsuite/gas/riscv/attribute-10.d: Updated.
	* testsuite/gas/riscv/march-imply-g.d: New testcase for g.
	* testsuite/gas/riscv/march-imply-unsupported.d: The zicsr and zifencei
	are not supported in the ISA spec v2.2, so don't add and output them.

	include/
	* opcode/riscv.h (RISCV_UNKNOWN_VERSION): added.
2020-12-01 15:23:02 +08:00
bfd RISC-V: Support to add implicit extensions for G. 2020-12-01 15:23:02 +08:00
binutils Allow spaces in the name of the external preprocessor used by windres. 2020-11-27 14:19:56 +00:00
config
contrib
cpu
elfcpp
etc
gas RISC-V: Support to add implicit extensions for G. 2020-12-01 15:23:02 +08:00
gdb Revert accidental empty commits 2020-11-30 13:59:57 +01:00
gdbserver
gdbsupport Ignore system_error in thread startup 2020-11-20 08:22:46 -07:00
gnulib
gold gold: Add endbr64 to IBT TLSDESC PLT entry 2020-11-29 11:41:47 -08:00
gprof
include RISC-V: Support to add implicit extensions for G. 2020-12-01 15:23:02 +08:00
intl
ld tic6x elf testsuite fix 2020-12-01 11:26:58 +10:30
libctf libctf: Pass format argument to asprintf 2020-11-25 19:11:36 +00:00
libdecnumber
libiberty
opcodes RISC-V: Remove the unimplemented extensions. 2020-12-01 15:13:06 +08:00
readline
sim sim: pru: Add support for LMBD instruction 2020-11-12 22:41:10 +02:00
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.