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According the rvv spec, https://github.com/riscv/riscv-v-spec/blob/master/vtype-format.adoc The bits of vtype immediate from 8 to (xlen - 1) should be reserved. Therefore, we should also dump the vtype immediate as numbers, when they are set over 8-bits. I think this is a bug that we used to support vediv extension and use the bit 8 and 9 of vtype, but forgot to update the behavior when removing the vediv. Consider the testcases, vsetvli a0, a1, 0x700 # the reserved bit 10, 9 and 8 are used. vsetvli a0, a1, 0x400 # the reserved bit 10 is used. vsetvli a0, a1, 0x300 # the reserved bit 9 and 8 are used. vsetvli a0, a1, 0x100 # the reserved bit 8 is used. vsetivli a0, 0xb, 0x300 # the reserved bit 9 and 8 are used. vsetivli a0, 0xb, 0x100 # the reserved bit 8 is used. The original objdump shows the following result, 0000000000000000 <.text>: 0: 7005f557 vsetvli a0,a1,1792 4: 4005f557 vsetvli a0,a1,1024 8: 3005f557 vsetvli a0,a1,e8,m1,tu,mu c: 1005f557 vsetvli a0,a1,e8,m1,tu,mu 10: f005f557 vsetivli a0,11,e8,m1,tu,mu 14: d005f557 vsetivli a0,11,e8,m1,tu,mu But in fact the correct result should be, 0000000000000000 <.text>: 0: 7005f557 vsetvli a0,a1,1792 4: 4005f557 vsetvli a0,a1,1024 8: 3005f557 vsetvli a0,a1,768 c: 1005f557 vsetvli a0,a1,256 10: f005f557 vsetivli a0,11,768 14: d005f557 vsetivli a0,11,256 gas/ * testsuite/gas/riscv/vector-insns.d: Added testcases to test the reserved bit 8 to (xlen-1) of vtype. * testsuite/gas/riscv/vector-insns.s: Likewise. include/ * opcode/riscv.h: Removed OP_MASK_VTYPE_RES and OP_SH_VTYPE_RES, since they are different for operand Vc and Vb. opcodes/ * riscv-dis.c (print_insn_args): Updated imm_vtype_res to extract the reserved immediate of vtype correctly. |
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bfd | ||
binutils | ||
config | ||
contrib | ||
cpu | ||
elfcpp | ||
etc | ||
gas | ||
gdb | ||
gdbserver | ||
gdbsupport | ||
gnulib | ||
gold | ||
gprof | ||
include | ||
intl | ||
ld | ||
libbacktrace | ||
libctf | ||
libdecnumber | ||
libiberty | ||
opcodes | ||
readline | ||
sim | ||
texinfo | ||
zlib | ||
.cvsignore | ||
.gitattributes | ||
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ar-lib | ||
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compile | ||
config-ml.in | ||
config.guess | ||
config.rpath | ||
config.sub | ||
configure | ||
configure.ac | ||
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COPYING3 | ||
COPYING3.LIB | ||
COPYING.LIB | ||
COPYING.LIBGLOSS | ||
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depcomp | ||
djunpack.bat | ||
install-sh | ||
libtool.m4 | ||
lt~obsolete.m4 | ||
ltgcc.m4 | ||
ltmain.sh | ||
ltoptions.m4 | ||
ltsugar.m4 | ||
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Makefile.def | ||
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missing | ||
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multilib.am | ||
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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.