forked from Imagelibrary/binutils-gdb
19b58b2658
According to the chapter 10 of the following U74-MC manual, https://sifive.cdn.prismic.io/sifive/6d9a2510-2632-44f3-adb9-d0430f139372_sifive_coreip_U74MC_AXI4_rtl_v19_08p2p0_release_manual.pdf and the implementations of freedom-metal, https://github.com/sifive/freedom-metal/blob/v201908-branch/src/cache.c * Encodings, 31-25 24-20 19-15 14-12 11-7 6-0 FUNCT7 RS2 RS1 FUNCT3 RD OPCODE 1111110 00000 xxxxx 000 00000 1110011 CFLUSH.D.L1 1111110 00010 xxxxx 000 00000 1110011 CDISCARD.D.L1 1111110 00001 00000 000 00000 1110011 CFLUSH.I.L1 * Extension names, xsfcflushdlone: CFLUSH.D.L1. xsfcdiscarddlone: CDISCARD.D.L1. xsfcflushilone: CFLUSH.I.L1. * Vendor target triples, For assembler, the target vendor is defined as TARGET_VENDOR in the gas/config.h, but I don't see any related settings in bfd/config.h and opcode/config. Since we may have vendor relocations in the future, and these relocation numbers may repeat, I add a new RISCV_TARGET_VENDOR in the bfd/config.h for riscv. The vendor name will be stored in the bfd/cpu-riscv.c, so that all tools (gas, bfd, opcode, ...) can get the vendor name from the configure setting. If the --with-arch configure option, -march gas option and elf architecture attributes are not set, then we will generate the default ISA string according to the chosen target vendor. For example, if you build the binutils with the configure option, --target=riscv64-sifive-elf, then the assembler will find the whole supported extension tables in the bfd/elfxx-riscv.c, and generate the suitable ISA string. bfd/ * configure.ac (RISCV_TARGET_VENDOR): Defined to store target_vendor, only when the target is riscv*. * config.in: Regenerated. * configure: Regenerated. * cpu-riscv.c (riscv_vendor_name): Defined to RISCV_TARGET_VENDOR. * cpu-riscv.h (enum riscv_spec_class): Added VENDOR_SPEC_CLASS_SIFIVE. * elfxx-riscv. (EXT_SIFIVE): Defined to choose the default extensions for sifive. (riscv_supported_vendor_sifive_ext): Added extensions for sifive cache control instructions. (riscv_supported_std_ext, riscv_all_supported_ext): Updated. (riscv_get_default_ext_version): Updated. (riscv_set_default_arch): Updated. gas/ * config/tc-riscv.c (VENDOR_SIFIVE_EXT): Added. (riscv_extended_subset_supports): Handle INSN_CLASS_XSF*. (op_vendor_sifive_hash): Added to store sifive opcodes. (md_begin): Init the op_vendor_sifive_hash. (riscv_find_extended_opcode_hash): Find the opcodes from op_vendor_sifive_hash. * testsuite/gas/riscv/extended/sifive-insns.d: New testcase. * testsuite/gas/riscv/extended/sifive-insns.s: Likewise. include/ * opcode/riscv-opc-extended.h: Added opcodes for sifive cache instructions. * opcode/riscv.h (enum riscv_extended_insn_class): Added INSN_CLASS_XSF*. opcodes/ * riscv-opc.c (riscv_vendor_sifive_opcodes): Added. (riscv_extended_opcodes): Updated.
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.