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We have to parse and add all arch string extensions at first, and then start to add their implicit extensions. That means we can always add arch string extensions at the end of the subset list, but we need to search the right place to add their implicit extensions. For now we follow the following rules to add the implicit extensions, * Add zicsr and zifencei only when the i's version less than 2.1. * Add d, f and zicsr when q is found. * Add f and zicsr when d is found. * Add zicsr when f is found. Besides, we do not add the implicit extensions if they are already added in the subset list, or we cannot find their default versions according to the chosen ISA spec. bfd/ * elfnn-riscv.c (riscv_merge_std_ext): Updated since riscv_lookup_subset is changed. * elfxx-riscv.c (riscv_ext_order): New Array used to compare the extensions' order quickly. (riscv_init_ext_order): New function. Init the riscv_ext_order according to the riscv_supported_std_ext and parse_config[i].class automatically. (riscv_compare_subsets): New function. Similar to the strcmp, but compare the subsets with the specific order. (riscv_lookup_subset): Return TRUE and set `current` to the subset if it is found. Otherwise, return FALSE and set `current` to the place where we should insert the subset. (riscv_add_implicit_subset): New function. Search the list first, and then find the right place to add the implicit_subset. (riscv_parse_add_subset): Since We have to add all arch string extensions first, and then start to add their implicit extensions. We can add arch string extensions in order by the original riscv_add_subset, and then add the implicit subsets by the riscv_add_implicit_subset. Besides, do not add the implicit extensions if we failed to find their default versions. (riscv_parse_std_ext): Updated. (riscv_parse_add_implicit_subsets): New function. Add all implicit extensions according to the arch string extensions. (riscv_parse_subset): Call riscv_init_ext_order and riscv_parse_add_implicit_subsets, before and after parsing the arch string. Remove parts of the ISA conflict checking since the implicit extensions are added. * elfxx-riscv.h (riscv_lookup_subset): Updated. gas/ * config/tc-riscv.c (riscv_subset_supports): Updated. * testsuite/gas/riscv/march-imply-i2p0.d: New testcase. Need to add the implicit zicsr and zifencei when i's version less than 2.1. * testsuite/gas/riscv/march-imply-i2p1.d: New testcase. * testsuite/gas/riscv/march-imply-d.d: Likewise. * testsuite/gas/riscv/march-imply-f.d: Likewise. * testsuite/gas/riscv/march-imply-q.d: Likewise. * testsuite/gas/riscv/march-fail-rv32iq.l: Updated. * testsuite/gas/riscv/march-fail-rv32id.d: Removed. * testsuite/gas/riscv/march-fail-rv32id.l: Likewise. * testsuite/gas/riscv/march-fail-rv64iq.d: Likewise. * testsuite/gas/riscv/march-fail-rv64iq.l: 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.