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For the lui and auipc relaxations, since the symbol value of an undefined weak symbol is always be zero, we can optimize the patterns into a single LI/MV/ADDI instruction. bfd/ * elfnn-riscv.c (riscv_pcgp_hi_reloc): Add new field undefined_weak. (riscv_record_pcgp_hi_reloc): New parameter undefined_weak. Set undefined_weak field from it. (relax_func_t): New parameter undefined_weak. (_bfd_riscv_relax_call): New ignored parameter undefined_weak. (_bfd_riscv_relax_tls_le): Likewise. (_bfd_riscv_relax_align): Likewise. (_bfd_riscv_relax_delete): Likewise. (_bfd_riscv_relax_lui): New parameter undefined_weak. If true, allow relaxing. For LO12* relocs, set rs1 to x0 when undefined_weak. (_bfd_riscv_relax_pc): New parameter undefined_weak. For LO12* relocs, set undefined_weak from hi_reloc. If true, allow relaxing. For LO12* relocs, set rs1 to x0 when undefined_weak and change to non-pcrel reloc. (_bfd_riscv_relax_section): New local undefined_weak. Set for undef weak relocs that can be relaxed. Pass to relax_func call. ld/ * testsuite/ld-riscv-elf/weakref32.s: Add relaxable undef weak code. * testsuite/ld-riscv-elf/weakref64.s: Likewise. * testsuite/ld-riscv-elf/weakref32.d: Updated. * testsuite/ld-riscv-elf/weakref64.d: Updated. |
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bfd | ||
binutils | ||
config | ||
contrib | ||
cpu | ||
elfcpp | ||
etc | ||
gas | ||
gdb | ||
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.