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d0b2dbfa |
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16-Aug-2023 |
Warner Losh <imp@FreeBSD.org> |
Remove $FreeBSD$: one-line sh pattern Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/
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c969310c |
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29-Jun-2023 |
Dmitry Chagin <dchagin@FreeBSD.org> |
csu: Implement _start using as to satisfy unwinders on x86_64 The right unwinding stop indicator should be CFI-undefined PC. https://dwarfstd.org/doc/Dwarf3.pdf - page 118: If a Return Address register is defined in the virtual unwind table, and its rule is undefined (for example, by DW_CFA_undefined), then there is no return address and no call address, and the virtual unwind of stack activations is complete. This requires the crt code be built with unwind tables, for that remove -fno-asynchronous-unwind-tables to enable unwind tables generation. PR: 241562, 246322, 246537 Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D40780
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51015e6d |
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30-Oct-2022 |
Konstantin Belousov <kib@FreeBSD.org> |
csu: move common code to libc Why? Most trivial point, it shaves around 600 bytes from the dynamic binaries on amd64. Less trivial, the removed code is no longer part of the ABI, and we can ship updates to it with libc updates. Right now most of the csu is linked into the binaries and require us to do somewhat tricky ABI compat when it needs to change. For instance, the init_array change would be much simpler and does not require note tagging if we have init calling code in libc. This could be improved more, by splitting dynamic and static initialization. For instance, &_DYNAMIC tests can be removed then. Such change, nonetheless, would require building libc three times. I left this for later, after this change stabilizes, if ever. Reviewed by: markj Discussed with: jrtc27 (some objections, see the review), imp Tested by: markj (aarch64) Sponsored by: The FreeBSD Foundation MFC after: 3 weeks Differential revision: https://reviews.freebsd.org/D37220
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b0ee263d |
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02-Jul-2020 |
John Baldwin <jhb@FreeBSD.org> |
Consolidate duplicated logic in csu Makefiles to lib/csu/Makefile.inc. Reviewed by: kib Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D25537
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99282790 |
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15-Jun-2020 |
John Baldwin <jhb@FreeBSD.org> |
Remove the sed hack for ABI tag notes. The ELF notes compiled in C were placed in a section with the wrong type (SHT_PROGBITS instead of SHT_NOTE). Previously, sed was used on the generated assembly to rewrite the section type. Instead, write the notes in assembly which permits setting the correct section type directly. While here, move inline assembly entry points out of C and into assembly for aarch64, arm, and riscv. Reviewed by: kib Tested on: amd64 (cirrus-ci), riscv64 Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D25211
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bdafb02f |
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13-Oct-2018 |
Konstantin Belousov <kib@FreeBSD.org> |
Process irelocs for statically linked binaries from crt1 on x86. This makes statically linked binaries with ifuncs operational. Reported and tested by: mjg Reviewed by: emaste, markj Sponsored by: The FreeBSD Foundation Approved by: re (rgrimes) Differential revision: https://reviews.freebsd.org/D17363
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5944f899 |
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07-Apr-2017 |
John Baldwin <jhb@FreeBSD.org> |
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
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23f6875a |
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19-Jan-2017 |
Enji Cooper <ngie@FreeBSD.org> |
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
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7c6cc9de |
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21-Sep-2015 |
Bryan Drewery <bdrewery@FreeBSD.org> |
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
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5ca34122 |
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21-Sep-2015 |
Bryan Drewery <bdrewery@FreeBSD.org> |
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
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6e7d005c |
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30-Nov-2014 |
Simon J. Gerraty <sjg@FreeBSD.org> |
Put lib/csu/amd64/Makefile back the way it is in head and handle staging via ../Makefile.inc
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5608fd23 |
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19-Aug-2014 |
Bryan Drewery <bdrewery@FreeBSD.org> |
Revert r267233 for now. PIE support needs to be reworked. 1. 50+% of NO_PIE use is fixed by adding -fPIC to INTERNALLIB and other build-only utility libraries. 2. Another 40% is fixed by generating _pic.a variants of various libraries. 3. Some of the NO_PIE use is a bit absurd as it is disabling PIE (and ASLR) where it never would work anyhow, such as csu or loader. This suggests there may be better ways of adding support to the tree. Many of these cases can be fixed such that -fPIE will work but there is really no reason to have it in those cases. 4. Some of the uses are working around hacks done to some Makefiles that are really building libraries but have been using bsd.prog.mk because the code is cleaner. Had they been using bsd.lib.mk then NO_PIE would not have been needed. We likely do want to enable PIE by default (opt-out) for non-tree consumers (such as ports). For in-tree though we probably want to only enable PIE (opt-in) for common attack targets such as remote service daemons and setuid utilities. This is also a great performance compromise since ASLR is expected to reduce performance. As such it does not make sense to enable it in all utilities such as ls(1) that have little benefit to having it enabled. Reported by: kib
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864c53ea |
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08-Jun-2014 |
Bryan Drewery <bdrewery@FreeBSD.org> |
In preparation for ASLR [1] support add WITH_PIE to support building with -fPIE. This is currently an opt-in build flag. Once ASLR support is ready and stable it should changed to opt-out and be enabled by default along with ASLR. Each application Makefile uses opt-out to ensure that ASLR will be enabled by default in new directories when the system is compiled with PIE/ASLR. [2] Mark known build failures as NO_PIE for now. The only known runtime failure was rtld. [1] http://www.bsdcan.org/2014/schedule/events/452.en.html Submitted by: Shawn Webb <lattera@gmail.com> Discussed between: des@ and Shawn Webb [2]
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d2cc835c |
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20-Apr-2012 |
Dimitry Andric <dim@FreeBSD.org> |
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
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a22748db |
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11-Mar-2012 |
Konstantin Belousov <kib@FreeBSD.org> |
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
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9ef4e3af |
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13-Jan-2011 |
Dimitry Andric <dim@FreeBSD.org> |
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
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a7d5f7eb |
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19-Oct-2010 |
Jamie Gritton <jamie@FreeBSD.org> |
A new jail(8) with a configuration file, to replace the work currently done by /etc/rc.d/jail.
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fe0506d7 |
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09-Mar-2010 |
Marcel Moolenaar <marcel@FreeBSD.org> |
Create the altix project branch. The altix project will add support for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting is a two-module system, consisting of a base compute module and a CPU expansion module. SGI's NUMAFlex architecture can be an excellent platform to test CPU affinity and NUMA-aware features in FreeBSD.
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5300f787 |
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27-Dec-2009 |
Konstantin Belousov <kib@FreeBSD.org> |
MFC r200038: 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. Hide and localize _start1 symbol used as an interface between asm and C code.
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c09ba327 |
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02-Dec-2009 |
Konstantin Belousov <kib@FreeBSD.org> |
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
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d7f03759 |
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19-Oct-2008 |
Ulf Lilleengen <lulf@FreeBSD.org> |
- Import the HEAD csup code which is the basis for the cvsmode work.
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af8d325c |
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22-Aug-2008 |
Konstantin Belousov <kib@FreeBSD.org> |
Add -fno-omit-frame-pointer to CFLAGS used to compile crt1.c on amd64. For gcc' __builtin_frame_address() to work, all call frames need to save frame pointer. In particular, this is important for the upper frame that should terminate the chain. No objections from: jhb PR: amd64/126543 MFC after: 1 week
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6de4623b |
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29-Jun-2003 |
Ruslan Ermilov <ru@FreeBSD.org> |
MFi386: revision 1.19.
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d2893b16 |
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29-Jul-2002 |
Ruslan Ermilov <ru@FreeBSD.org> |
Drop support for COPY, -c has been the default mode of install(1) for a long time now. Approved by: bde
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20200638 |
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13-May-2002 |
Ruslan Ermilov <ru@FreeBSD.org> |
Fixed CLEANFILES after bsd.lib.mk sweep.
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7893b524 |
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13-May-2002 |
Ruslan Ermilov <ru@FreeBSD.org> |
SOBJS are not used here for a long time, and were just pessimising the `install'.
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2a53f3fb |
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13-May-2002 |
Ruslan Ermilov <ru@FreeBSD.org> |
Major cleanup of bsd.lib.mk. Get rid of the INTERNALSTATICLIB knob and just use plain INTERNALLIB. INTERNALLIB now means to build static library only and don't install anything. Added a NOINSTALLLIB knob for libpam/modules. To not build any library at all, just do not set LIB.
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5b8f41af |
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12-May-2002 |
Ruslan Ermilov <ru@FreeBSD.org> |
Revert the last change. The corresponding bsd.lib.mk changes were already backed out.
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785b36d4 |
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11-May-2002 |
David E. O'Brien <obrien@FreeBSD.org> |
Use the simpler NOMAN rather than NOMAN, NOPIC, NOPROFILE, INTERNALLIB.
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ccc4300e |
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29-Apr-2002 |
Bruce Evans <bde@FreeBSD.org> |
Removed "-fkeep-inline-functions" from CFLAGS, since it now has no effect except to generate spurious warnings about a system header <sys/param.h> having some inline functions (the bswap family). This backs out the main part of rev.1.5 (which was the only part left). The problem fixed by rev.1.5 of the Makefile went away in rev.1.5 of ../common/crtbegin.c when the references to do_ctors() and do_dtors() in the latter were moved from inline asm to C code. This leaves the problem that implementation details cause warnings. Discussed with: jdp
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4cd01193 |
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29-Mar-2002 |
Mark Murray <markm@FreeBSD.org> |
Do not use __progname directly (except in [gs]etprogname(3)). Also, make an internal _getprogname() that is used only inside libc. For libc, getprogname(3) is a weak symbol in case a function of the same name is defined in userland.
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41513796 |
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27-Oct-2001 |
David E. O'Brien <obrien@FreeBSD.org> |
minor style updating
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ae7c8a2b |
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28-Oct-2000 |
David E. O'Brien <obrien@FreeBSD.org> |
* Bring back the guts of crt{i,n}.S. This allows C++ exceptions to work when using the egcs and gcc-devel ports, along with GCC built from stock public FSF sources. With out this change, FreeBSD will be removed from the list of systems GCC 3.0 must be evaluated on before release. With the effort some of us put into getting FreeBSD on this list, we should not turn this effort into a waste, else we might not be worth fighting for in the future. (note that Alpha and IA-64 versions of crt{i,n}.S are needed) * Switch from our own crt{begin,in} to those created from GCC's crtstuff.c. This will allow us to switch to DWARF2 exceptions in the future, along with staying in sync with any future GCC requirements. * Break out our ELF branding bits into a seperate file. Currently this is now included by our crt1.c files (since this functionality was part of our native crtbegin.c). Later crtbrand.o will be merged in the creation of crti.o.
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bb63c9d3 |
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20-May-2000 |
John Polstra <jdp@FreeBSD.org> |
Take crtbegin.c and crtend.c from the new machine-independent "common" sister directory.
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7f3dea24 |
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27-Aug-1999 |
Peter Wemm <peter@FreeBSD.org> |
$Id$ -> $FreeBSD$
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c30965b3 |
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15-Mar-1999 |
John Polstra <jdp@FreeBSD.org> |
Add "-fkeep-inline-functions" to CFLAGS so that higher optimization levels (-O3 and above) won't remove essential code. Many thanks to Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru> for pointing out that it was the optimizer's removal of this code that caused make world with -O3 to break. With this change, make buildworld now completes.
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bb2b8691 |
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12-Mar-1999 |
John Polstra <jdp@FreeBSD.org> |
Move the code for the ".init" and ".fini" sections outside of a C function so the compiler won't try to emit line numbers for it with "-g", breaking the build. This has the nice side-effect of making crtbegin.o and crtbeginS.o a little bit smaller. Remove "-Wno-unused" from the Makefile. Replace it with "__unused" on particular function and variable declarations.
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f92bdbd0 |
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09-Jan-1999 |
John Polstra <jdp@FreeBSD.org> |
Switch to using ".So" as the extension for PIC object files rather than ".so". The old extension conflicted with well-established naming conventions for dynamically loadable modules. The "clean" targets continue to remove ".so" files too, to deal with old systems.
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5584f22b |
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07-Sep-1998 |
John Polstra <jdp@FreeBSD.org> |
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.
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966a88d9 |
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07-Mar-1998 |
John Polstra <jdp@FreeBSD.org> |
Import C startup files for ELF support. Submitted by: John Polstra <jdp@polstra.com>
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