- Copy stable/10@285827 to releng/10.2 in preparation for 10.2-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.2.
- Update default pkg(8) configuration to use the quarterly branch.[1]

Discussed with: re, portmgr [1]
Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Pass --enable-new-dtags to the linker invocation by default. If
desired, one can turn off the generation of post-ELF standard dtags by
overriding it with --disable-new-dtags after the default switch.

Immediate effect of the change is that -rpath path is now stored both
in DT_RPATH and DT_RUNPATH tags, which is the right way to provide
rpath for dynamic linker supporting DT_RUNPATH per specification.

Reviewed by: kan
MFC after: 1 month

Enable gnu hash generation for dynamic ELF binaries on x86.

Reviewed by: kan

Make gcc emit the .note.GNU-stack section into the assembler files.

Reviewed by: kan

Make -mfancy-math-387 the default on FreeBSD, as it is on most other
operating systems. Previously, gcc would inhibit the generation of
fsqrt, fsin, and several other floating point instructions, for the
benefit of the old in-kernel math emulator, which was removed over 5
years ago.

White space fixes.

Reduce diff to vendor.

Update configuration files for GCC 4.2.

Fix a typo from previos commit.

Catch up with changes in BDX_OUTPUT_[LR]BRAC callers.

Merge conflicts for GCC 3.4.4.

Remove obsolete ASM_FINAL_SPEC definition.

Reported by: green

Update i386 MD bits for GCC 3.4.2-prerelease.

Fix ASM_OUTPUT_LABELREF to deal with TSL model prefixes GCC
started to use internally. They need to be stripped before
the name of the label or symbol is printed.

Reformat FBSD_{START,END}FILE_SPEC to FSF coding standards.
Use these in our i386, amd64, and alpha platforms.

Tell the toolchain to look for rtld in /libexec instead of /usr/libexec.

Do not override FP rounding options for 32bit platforms. amd64 doesn't
need this.

Update for 3.3.1-prerelease.

I goofed in rev 1.59 (a.out support axing) and missed getting FUNCTION_PROFILER
fully clean. This resulted in inserted garbage into the produced assembly code
when the gcc -pg and -fPIC options are used together.

PR: i386/50598
Submitted by: Don Lewis <truckman@freebsd.org>

Remove the last vestiges (I hope) of the mixed ELF/a.out support.
As a plus we can use the stock CC1_SPEC and ASM_SPEC for AMD64.

Teach gcc how to put unitialized data into BSS on FreeBSD.

Remove our custom mixed ELF/a.out support. This means the base compiler
now only produce ELF objects. It also makes us closer to stock GCC, and
simplifies the set of changes we still need from stock GCC on every import.

Applauded by: peter
Approved by: re

Fix C++ exception handling. GCC was using the older BSD DBX register numbers
rather than the ELF ABI/SVR4 ones in its DWARF unwinding.

Submitted by: Alexander Kabaev <ak03@gte.com>

When I decided to use a stock dbxout.c rather than merge the rev 1.2 change
(put the function stabs in traditional order on a.out, or gdb doesn't see
function local variables), I failed to remove the related knobs here.

Effectively were overrode the ELF-wide definition in elfos.h w/o providing
new infrastructure. This is what caused GDB to fail to debug applications
compiled and linked with -stabs. This is because GCC was unconditionally
inserts .stabs instruction for functions after the function body. GDB was
getting confused because what it thinks is function beginning address is
actually function ending address.

Submitted by: Alexander Kabaev <ak03@gte.com>

Tweaks for the 64-bit compiler.

BDE prefers this organization.

Submitted by: bde

cvs -j -j gave me two copies of TARGET_VERSION and I didn't notice
it before committing.

Match the DBX_OUTPUT_MAIN_SOURCE_FILE_END definition in dbxelf.h.

Bug found by: bde

Didn't get them all in revision 1.50.

Fix excessive alignment for the aout case, and unbreak genassym for that case.
Our aout linker has alignment hacks and doesn't need gcc to do anything special.

Tested for a year by: bde :-)

Tidy do-while.

Requested by: bde

do-while ASM_OUTPUT_ALIGN to enable its use in more places.

Fixes for building a.out bits.

Submitted by: bde

Comment a knob.

The default ASM_OUTPUT_ADDR_DIFF_ELT will now handle our mixed a.out/ELF.

i386 MD bits for Gcc 3.1.

These are totally untested. Do these work? Hell if I know, I have yet to
bootstrap using these bits. But people want them, so here they are.

Style changes to reduce diff to things I did in the FSF repo.

Fix bug where we were loosing our platform-wide ASM_COMMENT_START
definition due to pollution in i386/unix.h.

Switch register numbers for DWARF2_DEBUG also.

Use the default 'ld' emulation rather than hard coding it.
For FreeBSD, 'ld' 2.12.0 uses a different emulation than in the past.
So this change makes the upgrade easier.

Change "NO_PROFILE_DATA" to "NO_PROFILE_COUNTERS" to match the commit by
the FSF/GCC people in the stock 2.97 source that is like our custom change
modulo the conditional compilation symbol.

Move the obvious bits of mixed ELF and a.out support down into this MD
header to reduce the difference of our sources to the stock GNU/FSF ones.
While the mix binary format support was nice to have in the FreeBSD MI
header as a frame work, it just clutters up too much and makes the FreeBSD
MI header more different from the FSF/GNU stock one than it needs to be.

Properly format the SUBTARGET_SWITCHES so that ``gcc -v --help'' prints
them out.

PR: 19326
Submitted by: Naohiko Tsuji <yakisoba@f2.dion.ne.jp>

Do not use DWARF2 unwinding mechanisms for C++ exceptions on all of our
platforms.

ASM_DECLARE_OBJECT_NAME and ASM_FINISH_DECLARE_OBJECT are ELF MI routines
to generate the special .type and .size directives which are used to set
the corresponding fields of the linker symbol table entries in the ELF
object file. As such they are not i386-specific and thus belong in our
MI header. Otherwise on the Alpha we don't properly give the type and
size of dynamic symbols. Bintuil versions past 2.9.1 warn of this and
w/o this change, `ld' generates a lot of warnings during a `make world'.

Clean up the FreeBSD configuration files -- includes removing the usage
of svr4.h on the i386, and moving all the shared arch neutral bits into
the FreeBSD general config header.

Fix our -mprofiler-epilogue code.

"The problem is that egcs/gcc-2.95's reorganisation of the prologue and
epilogue code to use rtl instead of output_asm_insn() completely broke our
hooks. rtl is emitted in a different order, only after optimisation, while
output_asm_insn() is emitted immediately. rtl is presumably used so that
the prologue and epilogue can be optimised.

I couldn't find any good examples to copy. gcc's own
FUNCTION_BLOCK_PROFILER still uses output_asm_insn() and seems to be
completely broken. One of the XXX comments points to this.

IIRC, the hacks here basically arrange to emit magic label names; then when
the magic names are output, they are transformed into prologue and epilogue
code."

Submitted by: bde

Use symbolic values rather than constants in TARGET_DEFAULT.

Submitted by: bde on -current

Use a unified CPP_SPEC.

Fix my CPP_SPEC synatax screwup.

Totally pissed at self: obrien

Remove the defining of __i486__ baesd on TARGET_CPU_DEFAULT and !m386 or m486.

Register the fact we want expand_main_function() to invoke __main.

Remove a useless blank line, I accidently added.

Style cleanups:
* be consistant on protecting "#define FOO"s with "#undef FOO".
* be consistant that macro params are upper case, and commas are followed
by a space in the macro definition
* protect macro param expansion by ()'s
* break long lines
* line continuations chars to consistant column
* remove trailing spaces

Remove things common to all FreeBSD platforms. They will now live in a
FreeBSD wide config file.

This includes "WORD_SWITCH_TAKES_ARG" & "SWITCH_TAKES_ARG". Platforms
such as FreeBSD/MIPS will need to override these two defintions, but it
can #undef them and define them approapiately.

"COMMENT_BEGIN" is no longer used.

Support linking against libgcc_r.

Submitted by: Luoqi Chen <luoqi@chen.ml.org>

This should get us the same functionality we had with GCC 2.7.2.1.

* Support for our dual ELF/a.out building ability
* Our custom ASM_* definitions
* Our custom debugger and profiling related definitions
* Our custom STARTFILE/ENDFILE specs

* The stock EGCS 1.1.2 freebsd-elf.h file depended on
egcs-1.1.2/gcc/config/linux.h, which included "svr4.h". We will
include "svr4.h" via our "tm.h" definition. So add the few bits
from "linux.h" we actually needed.

* Using our current crtbegin.o/crtend.o we cannot support the DWARF2
unwinding mechanisms. In the future we will switch to the
non-sjlj-exceptions type exception machanism. However the `make world'
bootstrap problems with the EGCS crtstuff.c must be overcome first.

* Our a.out gas doesn't "know" to use NOP's for aligns while in the text
section. Thus the a.out alignment generation needed tweaking from
what we did with GCC 2.7.2. [from BDE]

* The definition of SUPPORTS_ONE_ONLY prevents the compiler from trying
to use "linkonce" sections for a.out. The definition of
NO_DBX_FUNCTION_END we had causes it to avoid .stabs symbols that the
assembler cannot handle for a.out. [from JDP]

* The previous "EXCEPTION_SECTION_FUNCTION" is the wrong name for EGCS.
It also needed tweaking for EGCS. [from JDP]

Also bump __FreeBSD_cc_version to 400002 in case we need to know we are
using EGCS at some point.

Update __FreeBSD__ and __FreeBSD_cc_version to be consistant with
__FreeBSD_version

Forgotten by: Eivind and Some anonymous release engineer

Per request from ache, change the numbering scheme of __FreeBSD_cc_version.
Its form is now like __FreeBSD_version, with the FreeBSD revision in
the top digits.

Add a new predefined preprocessor symbol "__FreeBSD_cc_version",
with a numeric value that describes the feature level of the
compiler. This can be used to check for the presence/absence of
FreeBSD-specific compiler features. The value is a decimal number
whose digits have the form VRRRRFF, where:

V = Compiler vendor. 0 (elided) means gcc.
RRRR = Vendor's version number, e.g., 2721 for the current
gcc version (2.7.2.1).
FF = FreeBSD-specific revision level. 00 means the stock
compiler from the vendor.

The value of "__FreeBSD_cc_version" is hard-coded in
"src/contrib/gcc/config/i386/freebsd.h" and must be incremented
when new FreeBSD-specific compiler features are added. I considered
simply picking up the value of FreeBSD_version from <osreldate.h>.
But that would break cross compiles of gcc.

PR: Part of the fix for gnu/8452
Suggested by: bde

Make profiling work for ELF. gprof now autodetects the format of
the executable file, so it will work for both a.out and ELF format
files. I have split the object format specific code into separate
source files. It's cleaner than it was before, but it's still
pretty crufty.

Don't cheat on your make world for this update. A lot of things
have to be rebuilt for it to work, including the compiler and all
of the profiled libraries.

-pg was causing a link with -lc_r... :-]

Submitted by: Dmitry Khrustalev <dima@xyzzy.machaon.ru>
PR: 6287

Both our a.out (hacked) gas and the binutils gas support .weak

Prompted by: bde

Don't disable the use of $ in assembler labels.. It changes libstdc++
and libg++ so that they won't work with existing binaries (including
netscape!!).

Spell -Bshareable correctly... :-]

svr4.h defines ASM_IDENTIFY_GCC, but neglects to define
ASM_IDENTIFY_LANGUAGE. Use the osfrose.h method, because gdb assumes
'C' by default, so there's no need to further clutter the symbol table.

Cosmetic cleanup for a.out asm generation.. Don't put the end-of-file
markers that the stabs-in-elf system uses.

Put the function stabs in traditional order on a.out, or gdb doesn't see
function local variables.

Add hooks for John Birrell's kernel thread support library.

Submitted by: John Birrell <jb@cimlogic.com.au>

First round of changes to support generation of assembler for the old
a.out gas and the binutils gas (elf or a.out) with a single compiler.

This uses other infrastructure not yet committed, in order to support
both a.out and elf it needs to be able to get to both a.out and elf
gas, ld, libs, crt* etc. So for now, the support is pretty much dormant.

The new freebsd.h file is based on the old freebsd-elf.h file (which has a
long lineage, right back through linux and svr4 files). The change is
pretty dramatic from a gcc internals standpoint as it overrides a lot of
definitions in order to generate different output based on target mode.
There is potential for screw-ups, so please be on the lookout - gcc's
configuration mechanism wasn't really meant for this kind of thing.
It's believed to compile world etc just fine under both a.out and elf, can
handle global constructors and destructors, handles the differences in
a.out and elf stabs, and what sections things like exceptions go in.

The initial idea came from i386/osfrose.h which is a dual rose/elf format
target. These two are not as diverse as a.out and elf it would seem.

The cc front-end uses external configuration to determine default object
format (still being thrashed out, so read the source if you want to see
it so far), and has a '-aout' and '-elf' override command line switch.
There are some other internal switches that can be accessed, namely -maout,
-mno-aout, -munderscores and -mnounderscores. The underscore and local
symbol prefixing rules are controllable seperately to the output format.
(ie: it's possible to generate a.out without the _ prefixes on symbols and
also to generate elf with the _ prefixes. This isn't quite optimal, but
does seem to work pretty well, except the linkers don't always recognise
the local symbols without their normal names)

The default format is a.out (still), nobody should see any major changes.

With both elf and a.out tools and libraries installed:

[1:26pm]/tmp-223> cc -elf -o hello hello.c
peter@beast[1:27pm]/tmp-224> file hello
hello: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), dynamically linked, not stripped
[1:27pm]/tmp-225> ./hello
hello world!

[1:27pm]/tmp-226> cc -aout -o hello hello.c
[1:27pm]/tmp-227> file hello
hello: FreeBSD/i386 compact demand paged dynamically linked executable not stripped
1:27pm]/tmp-228> ./hello
hello world!

Since my co-conspirators put a lot of effort into this too, I'll add them
so they can share the blame^H^H^H^H^Hglory. :-)

Reviewed by: sos, jdp

Let gcc know about libc_r. Use -pthread to link against libc_r instead
of libc.

Make "gcc -shared" work properly for building shared libraries. An
up-to-date version of c++rt0.o is necessary for this to work right.

Closes PR gnu/3035: gcc -shared flag is broken.

Disallow "-p" when linking, with a diagnostic that recommends using
"-pg" and gprof(1) instead. FreeBSD does not support plain "-p" or
prof(1).

Plain "-p" is still allowed when just compiling. In the compile
phase, "-p" is identical "-pg". It is used by <bsd.lib.mk> for
building profiled object files.

-current is now 3.0. NOT a 2.2 candidate. :)

Undo rev 1.4 of freebsd.h and 1.2 freebsd-elf.h, where I added
_BSD4_4 as a predefined symbol. People on the lists generally didn't care
for it.

Add _BSD4_4 as a predefined symbol.
Peter Dufault (dufault@hda.com) suggested this is the most approate symbol
to use.

2.2-R candidate.

Activate the .weak code generation for libgcc.a and g++ now that it works.

Merge in freebsd-specific changes

This commit was generated by cvs2svn to compensate for changes in r18336,
which included commits to RCS files with non-trunk default branches.

Import of 2.7.2.1 into vendor branch

Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the
non-i386, non-unix, and generatable files have been trimmed, but can easily
be added in later if needed.

gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's
handy to have both available for reference for such little cost.

The freebsd-specific changes will then be committed, and once the dust has
settled, the bmakefiles will be committed to use this code.