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Commit Graph

28 Commits

Author SHA1 Message Date
Pedro F. Giffuni
5e53a4f90f lib: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using mis-identified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-26 02:00:33 +00:00
John Baldwin
e896328044 Don't include GNU object attributes when building with clang.
LLVM's MIPS assembler parser does not understand the GNU as
'.gnu_attribute' keyword.  This could be re-enabled if LLVM is updated
in the future.  The desired floating point ABI is already described in
the .MIPS.abiflags section.

Reviewed by:	emaste
Sponsored by:	DARPA / AFRL
2017-08-30 19:19:31 +00:00
John Baldwin
5944f899a2 Rework r234502 to include a modified CFLAGS along with ACFLAGS.
On most architectures crt objects are compiled in a multiple-step process
so that sed can be run on the generated assembly.  As the final step,
the C compiler generates an object file from the modified assembly output.
Currently this last step uses $CC with only $ACFLAGS.  However, for other
uses in the tree, $ACFLAGS is meant to include assembly-specific compiler
flags that are in addition to $CFLAGS (see default .S.o rules
bsd.suffixes.mk).  In particular, external toolchains may require
additional flags to select a non-default target which will be present
in CFLAGS but not ACFLAGS.  To support this while still mitigating the
issue with CFLAGS described in r234502, include a modified CFLAGS that
excludes "-g" when assembling the modified assembly files.

Note that normally an assembler ($AS) is used to assemble .s flags to
object files (see bsd.suffixes.mk).  However, llvm-based toolchains do
not currently have a stand-alone assembler.

Reviewed by:	imp
Sponsored by:	DARPA / AFRL
Differential Revision:	https://reviews.freebsd.org/D10085
2017-04-07 19:53:14 +00:00
Enji Cooper
23f6875a43 Use SRCTOP-relative paths and .CURDIR with :H instead of ".." specified paths
This implifies pathing in make/displayed output

MFC after:    3 weeks
Sponsored by: Dell EMC Isilon
2017-01-20 03:52:16 +00:00
Alexander Kabaev
20d197f463 Make MIPS startup assembly files use neutral float ABI.
This allows these files to be used with hard and softfloat targets
with no special flags passed to the compiler.

Reviewed by: adrian, br, imp
Differential Revision:	https://reviews.freebsd.org/D8506
2016-11-16 03:21:49 +00:00
Ed Maste
c6a33c8e88 Remove historical GNUC test
The requirement is for a GCC-compatible compiler and not necessarily
GCC itself. However, we currently expect any compiler used for building
the whole of FreeBSD to be GCC-compatible and many things will break if
not; there's no longer a need to have an explicit test for this in csu.

Sponsored by:	The FreeBSD Foundation
2015-12-08 19:32:58 +00:00
Bryan Drewery
ec766071e3 META_MODE: Remove DEP_MACHINE from Makefile.depend files.
This has not been needed since r246865 in projects/bmake.

Sponsored by:	EMC / Isilon Storage Division
2015-09-25 19:44:01 +00:00
Bryan Drewery
54c7d75a06 META_MODE: Remove DEP_RELDIR from Makefile.depend files.
This has not been needed since r284171 in projects/bmake.

Sponsored by:	EMC / Isilon Storage Division
2015-09-25 19:26:08 +00:00
Bryan Drewery
7c6cc9de3a Fix installation of 32bit libraries after r288074.
FILES is not used when LIBRARIES_ONLY is set, which is used to build and
install the lib32 sysroot.  All of the csu files do quality as "libraries"
for this case so just undefine LIBRARIES_ONLY.

This is still better than the previous realinstall handling as it does
not hook into META_MODE properly.

Sponsored by:	EMC / Isilon Storage Division
2015-09-21 21:44:02 +00:00
Bryan Drewery
5ca34122ec Replace realinstall: and META_MODE staging hacks with FILES mechanism.
This partially reverts r270170 for lib/csu/i386 while retaining the
change for using bsd.lib.mk.

These FILES groups could go into lib/csu/Makefile.inc but I've kept them
in the Makefiles for clarity.

Sponsored by:	EMC / Isilon Storage Division
2015-09-21 18:39:13 +00:00
Simon J. Gerraty
ccfb965433 Add META_MODE support.
Off by default, build behaves normally.
WITH_META_MODE we get auto objdir creation, the ability to
start build from anywhere in the tree.

Still need to add real targets under targets/ to build packages.

Differential Revision:       D2796
Reviewed by: brooks imp
2015-06-13 19:20:56 +00:00
David E. O'Brien
d9a447559b Sync with HEAD. 2013-02-08 16:10:16 +00:00
Konstantin Belousov
d549ead6a9 Only assign the environ in the startup code when environ is NULL.
Preloaded library could have changed the environment, and
unconditional assingment to the environ undoes the customization.
The binaries needs to be recompiled to get the fix.

Move the common code to set up environ and __progname into the helper.
Note that ia64 possibly not fixed, due to it still using old csu.

Reported and tested by:	John Hein <jhein@symmetricom.com>
Reviewed by:	kan, scf
Approved by:	secteam (simon)
MFC after:	2 weeks
2013-01-07 17:58:27 +00:00
Simon J. Gerraty
23090366f7 Sync from head 2012-11-04 02:52:03 +00:00
Dimitry Andric
d2cc835cb5 After r217375, some startup objects under lib/csu are built in a special
way: first they are compiled to assembly, then some sed'ing is done on
the assembly, and lastly the assembly is compiled to an object file.

This last step is done using ${CC}, and not ${AS}, because when the
compiler is clang, it outputs directives that are too advanced for our
old gas.  So we use clang's integrated assembler instead.  (When the
compiler is gcc, it just calls gas, and nothing is different, except one
extra fork.)

However, in the .s to .o rules in lib/csu/$ARCH/Makefile, I still passed
CFLAGS to the compiler, instead of ACFLAGS, which are specifically for
compiling .s files.

In case you are using '-g' for debug info anywhere in your CFLAGS, it
causes the .s files to already contain debug information in the assembly
itself.  In the next step, the .s files are also compiled using '-g',
and if the compiler is clang, it complains: "error: input can't have
.file dwarf directives when -g is used to generate dwarf debug info for
assembly code".

Fix this by using ${ACFLAGS} for compiling the .s files instead.

Reported by:	jasone
MFC after:	1 week
2012-04-20 21:00:39 +00:00
Konstantin Belousov
a22748dbd9 Stop calling _init/_fini methods from crt1 for dynamic binaries. Do
call preinit, init and fini arrays methods from crt1 for static binaries.

Mark new crt1 with FreeBSD-specific ELF note.

Move some common crt1 code into new MI file ignore_init.c, to reduce
duplication.  Also, conservatively adjust nearby sources for style.

Reviewed by:	kan
Tested by:	andrew (arm), flo (sparc64)
MFC after:	3 weeks
2012-03-11 20:04:09 +00:00
Oleksandr Tymoshenko
dae259f8c4 - Remove one more no-op #ifndef 2012-03-06 19:19:33 +00:00
Oleksandr Tymoshenko
dd2f96800b - Remove NOSHARED parts since it seems to be no-op
- Call _init_tls for statically linked binaries
2012-03-06 03:29:46 +00:00
Warner Losh
41ea72bd1d Whitespace nit 2011-02-01 22:50:23 +00:00
Dimitry Andric
9ef4e3afcb Apply a workaround for a binutils issue with the .note.ABI-tag section
generated from lib/csu/common/crtbrand.c (which ultimately ends up in
executables and shared libraries, via crt1.o, gcrt1.o or Scrt1.o).

For all arches except sparc, gcc emits the section directive for the
abitag struct in crtbrand.c with a PROGBITS type.  However, newer
versions of binutils (after 2.16.90) require the section to be of NOTE
type, to guarantee that the .note.ABI-tag section correctly ends up in
the first page of the final executable.

Unfortunately, there is no clean way to tell gcc to use another section
type, so crtbrand.c (or the C files that include it) must be compiled in
multiple steps:

- Compile the .c file to a .s file.
- Edit the .s file to change the 'progbits' type to 'note', for the section
  directive that defines the .note.ABI-tag section.
- Compile the .s file to an object file.

These steps are done in the invididual Makefiles for each applicable arch.

Reviewed by:	kib
2011-01-13 20:44:31 +00:00
Juli Mallett
ebe2e5dca3 Fix spelling of noreorder. 2010-03-13 02:10:20 +00:00
Ulrich Spörlein
03dab16e1d Use default WARNS setting (of 6) for lib/csu.
PR:		bin/140089
Reviewed by:	jmallett
Approved by:	ed (co-mentor)
2010-03-05 13:29:05 +00:00
Ulrich Spörlein
98b77738b8 Properly declare non-extern functions in crt1
Also move the declarations after __progname consistently to
make the distinction clearer.

Reviewed by:	jmallett
Approved by:	ed (co-mentor)
2010-03-05 13:28:05 +00:00
Warner Losh
75b2bd679b Use ABI neutral macrosa
Submitted by:	jmallet
2010-03-03 21:59:23 +00:00
Warner Losh
800b5ba27d __main and __gccmain are no longer required, so eliminate them.
Submitted by:	jmallet@
2010-03-03 21:54:49 +00:00
Ed Schouten
daaf575910 Build lib/ with WARNS=6 by default.
Similar to libexec/, do the same with lib/. Make WARNS=6 the norm and
lower it when needed.

I'm setting WARNS?=0 for secure/. It seems secure/ includes the
Makefile.inc provided by lib/. I'm not going to touch that directory.
Most of the code there is contributed anyway.
2010-01-02 09:58:07 +00:00
Konstantin Belousov
c09ba32715 Properly support -fPIE by linking PIE binaries with specially-built
Scrt1.o instead of crt1.o, since the later is built as non-PIC.

Separate i386-elf crt1.c into the pure assembler part and C code,
supplying all data extracted by assembler stub as explicit parameters [1].
Hide and localize _start1 symbol used as an interface between asm and
C code.

In collaboration with:	kan
Inspired by:	PR i386/127387 [1]
Prodded and tested by:	rdivacky [1]
MFC after:	3 weeks
2009-12-02 16:34:20 +00:00
Oleksandr Tymoshenko
32d7197a6d Bring C runtime bits for FreeBSD/mips from p4 mips2-jnpr branch.
Approved by:	cognet (mentor)
2008-05-03 11:16:32 +00:00