mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-21 01:12:32 +08:00
b417536f23
Make BFD agree with GAS and mark the LSI MiniRISC CW4010 processor core (for an odd reason referred to as LSI R4010 across our code base) as a MIPS II processor in BFD as well, fixing a bug that has been there since forever and addressing linker warnings like: $ as -m4010 empty.s -o 4010.o $ ld -r 4010.o -o 4010-r.o ld: 4010.o: warning: Inconsistent ISA between e_flags and .MIPS.abiflags $ due to the ISA level being recorded as MIPS III in ELF file header's `e_flags' vs MIPS II in the MIPS ABI Flags section: $ readelf -Ah 4010.o ELF Header: Magic: 7f 45 4c 46 01 02 01 00 00 00 00 00 00 00 00 00 Class: ELF32 Data: 2's complement, big endian Version: 1 (current) OS/ABI: UNIX - System V ABI Version: 0 Type: REL (Relocatable file) Machine: MIPS R3000 Version: 0x1 Entry point address: 0x0 Start of program headers: 0 (bytes into file) Start of section headers: 348 (bytes into file) Flags: 0x20821000, 4010, o32, mips3 Size of this header: 52 (bytes) Size of program headers: 0 (bytes) Number of program headers: 0 Size of section headers: 40 (bytes) Number of section headers: 11 Section header string table index: 10 Attribute Section: gnu File Attributes Tag_GNU_MIPS_ABI_FP: Hard float (double precision) MIPS ABI Flags Version: 0 ISA: MIPS2 GPR size: 32 CPR1 size: 32 CPR2 size: 0 FP ABI: Hard float (double precision) ISA Extension: LSI R4010 ASEs: None FLAGS 1: 00000000 FLAGS 2: 00000000 $ Available documentation[1][2] clearly indicates the LSI CW4010 processor is only backwards compatible with the MIPS R4000 processor as far as the latter's 32-bit instructions are concerned and consequently can only be considered a MIPS II ISA implementation (with vendor extensions). This fixes an LD testsuite failure: FAIL: MIPS incompatible objects: "-march=r4010 -32" "-march=r4650 -32" triggered for the `mips-sgi-irix5' and `mips-sgi-irix6' targets. References: [1] Paul Cobb, Bob Caulk, Joe Cesana, "The MiniRISC CW4010: A Superscalar MIPS Processor ASIC Core", LSI Logic, July 1995, presented at Hot Chips VII, Stanford University, Stanford, California, August 1995 [2] "MiniRISC MR4010 Superscalar Microprocessor Reference Device", LSI Logic, November 1996, Doc. No. DB09-000028-00, Order No. C15017 bfd/ * cpu-mips.c (arch_info_struct): Mark the 4010 32-bit. * elfxx-mips.c (mips_set_isa_flags) <bfd_mach_mips4010>: Set E_MIPS_ARCH_2 rather than E_MIPS_ARCH_3 in `e_flags'. (mips_mach_extensions): Mark `bfd_mach_mips4010' as extending `bfd_mach_mips6000' rather than `bfd_mach_mips4000'. ld/ * testsuite/ld-mips-elf/lsi-4010-isa.d: New test. * ld/testsuite/ld-mips-elf/mips-elf.exp: Run the new test. |
||
---|---|---|
bfd | ||
binutils | ||
config | ||
cpu | ||
elfcpp | ||
etc | ||
gas | ||
gdb | ||
gold | ||
gprof | ||
include | ||
intl | ||
ld | ||
libdecnumber | ||
libiberty | ||
opcodes | ||
readline | ||
sim | ||
texinfo | ||
zlib | ||
.cvsignore | ||
.gitattributes | ||
.gitignore | ||
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 | ||
README | ||
README-maintainer-mode | ||
setup.com | ||
src-release.sh | ||
symlink-tree | ||
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.