freebsd-dev/contrib/binutils
Justin Hibbits dc9b124d66 Create a new MACHINE_ARCH for Freescale PowerPC e500v2
Summary:
The Freescale e500v2 PowerPC core does not use a standard FPU.
Instead, it uses a Signal Processing Engine (SPE)--a DSP-style vector processor
unit, which doubles as a FPU.  The PowerPC SPE ABI is incompatible with the
stock powerpc ABI, so a new MACHINE_ARCH was created to deal with this.
Additionaly, the SPE opcodes overlap with Altivec, so these are mutually
exclusive.  Taking advantage of this fact, a new file, powerpc/booke/spe.c, was
created with the same function set as in powerpc/powerpc/altivec.c, so it
becomes effectively a drop-in replacement.  setjmp/longjmp were modified to save
the upper 32-bits of the now-64-bit GPRs (upper 32-bits are only accessible by
the SPE).

Note: This does _not_ support the SPE in the e500v1, as the e500v1 SPE does not
support double-precision floating point.

Also, without a new MACHINE_ARCH it would be impossible to provide binary
packages which utilize the SPE.

Additionally, no work has been done to support ports, work is needed for this.
This also means no newer gcc can yet be used.  However, gcc's powerpc support
has been refactored which would make adding a powerpcspe-freebsd target very
easy.

Test Plan:
This was lightly tested on a RouterBoard RB800 and an AmigaOne A1222
(P1022-based) board, compiled against the new ABI.  Base system utilities
(/bin/sh, /bin/ls, etc) still function appropriately, the system is able to boot
multiuser.

Reviewed By:	bdrewery, imp
Relnotes:	yes
Differential Revision:	https://reviews.freebsd.org/D5683
2016-10-22 01:57:15 +00:00
..
bfd Create a new MACHINE_ARCH for Freescale PowerPC e500v2 2016-10-22 01:57:15 +00:00
binutils Generate manpage out of the texinfo files using texi2mdoc 2015-03-02 17:20:34 +00:00
config Clean some 'svn:executable' properties in the tree. 2013-01-26 22:08:21 +00:00
etc
gas gas: Implement the .inst assembler directive for arm. 2016-05-20 20:01:10 +00:00
gprof
include Replace local prototype of basename() with an inclusion of <libgen.h>. 2016-05-29 16:10:01 +00:00
ld Remove pregenerated text version of the texinfo documentation 2015-03-02 17:25:03 +00:00
libiberty Clean up hardcoded ar(1) flags in the tree to use the global ARFLAGS in 2012-12-06 01:31:25 +00:00
opcodes In binutils' arm-dis.c, avoid left-shifting a negative number. 2015-09-22 09:35:35 +00:00
ChangeLog
config-ml.in
config.guess
config.rpath
config.sub Merging of projects/armv6, part 3 2012-08-15 03:21:56 +00:00
configure
configure.ac
FREEBSD-deletelist
FREEBSD-upgrade
FREEBSD-Xlist
install-sh
libtool.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS
Makefile.def
Makefile.in Clean up hardcoded ar(1) flags in the tree to use the global ARFLAGS in 2012-12-06 01:31:25 +00:00
Makefile.tpl Clean up hardcoded ar(1) flags in the tree to use the global ARFLAGS in 2012-12-06 01:31:25 +00:00
missing
mkinstalldirs
move-if-change
README
README-maintainer-mode
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.