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2025-12-29linux: Add required symbol to EXPORT_SYMS listEd Maste
PR: 291270
2024-10-17Revert "modules: Add missing opt_*.h files for stand-alone compile"Warner Losh
This reverts commit 1a37caeb076b9d31e13c54691d7f1eeb589798bb. I'd overlooked 06c07e1203324bfe8ab4526c82dbb750864272d5 when I updated a branch I'd previously committed but not updated. My search for this in my tree before the commit was to a stale file... Sponsored by: Netflix
2024-10-12modules: Add missing opt_*.h files for stand-alone compileWarner Losh
Standalone compile that we at least create these opt_*.h files. Sponsored by: Netflix
2024-07-15Remove residual blank line at start of MakefileWarner Losh
This is a residual of the $FreeBSD$ removal. MFC After: 3 days (though I'll just run the command on the branches) Sponsored by: Netflix
2024-05-11linux: Make module standalone-buildableWarner Losh
Add opt_inet.h and opt_usb.h to make linux module buildable standalone. Sponsored by: Netflix
2024-01-12sanitizers: Avoid building genassym.c and genoffset.c with sanitizersMark Johnston
Some, particularly KASAN, may insert redzones around global symbols, resulting in incorrect offset definitions because genassym.sh (ab)uses symbol sizes to assign semantic meaning. (Ideally I would be able to define this pattern in one place, but I haven't found a way to define a GENSYM_CFLAGS that actually works for all of the consumers (kern.post.mk, kmod.mk, sys/conf/files*).) MFC after: 1 week Sponsored by: Klara, Inc. Sponsored by: Juniper Networks, Inc.
2023-12-26sys: ${CFLAGS:N-flto} -> ${CFLAGS:N-flto*}Alex Xu (Hello71)
For the same reason as the original https://reviews.freebsd.org/D9659: -flto=<N>, -flto=full, and -flto=thin also produce the GIMPLE/bitcode which is not supported by genassym, so filter those out as well. Signed-off-by: Alex Xu (Hello71) <alex_y_xu@yahoo.ca> Reviewed by: imp Pull Request: https://github.com/freebsd/freebsd-src/pull/898
2023-10-13netlink: move NETLINK define to opt_global.hKristof Provost
Move the NETLINK define into opt_global.h so we can rely on it being set correctly, without having to remember to include opt_netlink.h. This ensures that the NETLINK define is correctly set. If not we may end up with unloadable modules, due to missing symbols (such as nlmsg_get_group_writer). PR: 274306 Reviewed by: imp, markj MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D42179
2023-08-16sys: Remove $FreeBSD$: one-line sh patternWarner Losh
Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/
2023-07-22linux(4): Implement xattr syscallsDmitry Chagin
Reviewed by: Differential revision: https://reviews.freebsd.org/D35544 MFC after: 1 month
2023-05-29linux(4): Make linux_emul_path privateDmitry Chagin
There is no need to refer to linux_emul_path from outside anymore. MFC after: 2 month
2023-03-31linux(4): Fix opt_netlink.h inclusionDmitry Chagin
Add opt_netlink.h to the linux_common module, on i386, where we don't uses linux_common module, move opt_netlink.h inclusion under i386 condition. MFC after: 2 weeks
2023-03-31linux(4): Move inclusion of i386-specific files under common conditionDmitry Chagin
2023-03-27netlink: fix linux module build w/ netlink.Alexander V. Chernikov
Reported by: Marek Zarychta <zarychtam@plan-b.pwste.edu.pl> MFC after: 2 weeks
2023-02-14linux(4): Trim unused opt_usb.h from modules MakefilesDmitry Chagin
MFC after: 2 weeks
2023-02-12linux(4): Get rid of the opt_compat.h include.Dmitry Chagin
Since e013e369 COMPAT_LINUX, COMPAT_LINUX32 build options are removed, so include of opt_compat.h is no more needed. MFC after: 2 weeks
2023-02-06linux(4): Attach netlink on i386.Dmitry Chagin
Discussed with: melifaro MFC after: 3 days
2023-02-02linux(4): Add coredump support to i386.Dmitry Chagin
MFC after: 1 week
2022-11-02linux64: improve linux_support.s make rulesEd Maste
Previously we relied on the .s.o rule in share/mk/bsd.suffixes.mk to tell make that linux_support.o is built from linux_support.s, even though we do not use the .s.o rule to assemble it. Reviewed by: sjg MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D35864
2022-11-02sys: use .S for assembly language files that use the preprocessorElliott Mitchell
Reviewed by: imp Pull Request: https://github.com/freebsd/freebsd-src/pull/609 Differential Revision: https://reviews.freebsd.org/D35908
2022-10-29modules: Add missing opt_*.h files for stand-alone compileWarner Losh
Standalone compile that we at least create these opt_*.h files. Sponsored by: Netflix
2022-10-29linux, linux64: fix module loadMitchell Horne
The previous commit added references to to the syscallnames arrays, but failed to add the relevant source files to the module build. Thus, the modules failed to load due to missing symbols. Reported by: cy Fixes: 1da65dcb1c57 ("linux: populate sv_syscallnames in each sysentvec") Sponsored by: The FreeBSD Foundation
2022-10-29linux, linux64: improve SRCS formattingMitchell Horne
Sort the entries alphabetically, and list them with one entry per line. This makes the diffs much cleaner when adding or removing a new entry, as I will do in the next commit. MFC after: 1 week Sponsored by: The FreeBSD Foundation
2022-05-23linux(4); Move vdso_selector_x86.c to the linux_common moduleDmitry Chagin
MFC after: 2 weeks
2022-05-23linux(4): Deduplicate translate_traps()Dmitry Chagin
As translate_traps() is common for x86 Linuxulators, move it under x86/linux. MFC after: 2 weeks
2022-05-08linux(4): Implement vdso getcpu for x86.Dmitry Chagin
This is modeled after f2395455 (by kib@). MFC after: 2 weeks
2022-04-26linux(4): Add a simple rseq syscall implementation.Dmitry Chagin
To avoid annoyng messages from glibc-2.35 test suite add the simple implementation of rseq syscall which is do nothing for now. I plan to implement it if and when the API stabilizes. MFC after: 2 weeks
2021-11-18Fix some modules to export more used symbolsKonstantin Belousov
and remove non-present symbols that are now reported by kmod_syms.awk. Reviewed by: emaste Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D32878
2021-11-03linux: mv sys/i386/linux/linux_ptrace{,_machdep}.cEdward Tomasz Napierala
In preparation for machine-independent sys/compat/linux/linux_ptrace.c, rename the i386-specific Linux ptrace(2) implementation. No functional changes. Sponsored By: EPSRC Differential Revision: https://reviews.freebsd.org/D32757
2021-09-22Revert "linux32: add a hack to avoid redefining the type of the savefpu tag"Konstantin Belousov
This reverts commit 0f6829488ef32142b9ea1c0806fb5ecfe0872c02. Also it changes the type of md_usr_fpu_save struct mdthread member to void *, which is what uncovered this trouble. Now the save area is untyped, but since it is hidden behind accessors, it is not too significant. Since apparently there are consumers affected outside the tree, this hack is better than one from the reverted revision. PR: 258678 Reported by: cy Reviewed by: cy, kevans, markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D32060
2021-09-21linux32: add a hack to avoid redefining the type of the savefpu tagKonstantin Belousov
when compiling in amd64 kernel environment with -m32. This is a temporal workaround for some future proper (but unclear) fix. Reviewed by: jhb, markj Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D31954
2021-07-26linux(4): Fix amd64 gcc build.Dmitry Chagin
Do not specify memory model and mregparm for amd64, it's only available on IA-32 architecture. Reported by: jhb, jrtc27 MFC after: 2 weeks
2021-07-26linux(4): Fix i386 gcc build.Dmitry Chagin
Do not specify memory model for i386. Seems that clang silencly ignores -mcmodel unlike gcc. Reported by: jhb MFC after: 2 weeks
2021-07-20linux(4); Almost complete the vDSO.Dmitry Chagin
The vDSO (virtual dynamic shared object) is a small shared library that the kernel maps R/O into the address space of all Linux processes on image activation. The vDSO is a fully formed ELF image, shared by all processes with the same ABI, has no process private data. The primary purpose of the vDSO: - non-executable stack, signal trampolines not copied to the stack; - signal trampolines unwind, mandatory for the NPTL; - to avoid contex-switch overhead frequently used system calls can be implemented in the vDSO: for now gettimeofday, clock_gettime. The first two have been implemented, so add the implementation of system calls. System calls implemenation based on a native timekeeping code with some limitations: - ifunc can't be used, as vDSO r/o mapped to the process VA and rtld can't relocate symbols; - reading HPET memory is not implemented for now (TODO). In case on any error vDSO system calls fallback to the kernel system calls. For unimplemented vDSO system calls added prototypes which call corresponding kernel system call. Tested by: trasz (arm64) Differential revision: https://reviews.freebsd.org/D30900 MFC after: 2 weeks
2021-06-30linux(4): implement coredump supportEdward Tomasz Napierala
Implement dumping core for Linux binaries on amd64, for both 32- and 64-bit executables. Some bits are still missing. This is based on a prototype by chuck@. Reviewed By: kib Sponsored By: EPSRC Differential Revision: https://reviews.freebsd.org/D30019
2020-12-05Fix i386 linux module after r367395.Tijl Coosemans
In r367395 parts of machine dependent linux_dummy.c were moved to a new machine independent file sys/compat/linux/linux_dummy.c and the existing linux_dummy.c was renamed to linux_dummy_machdep.c. Add linux_dummy_machdep.c to the linux module for i386. Rename sys/amd64/linux32/linux_dummy.c for consistency. Add the new linux_dummy.c to the linux module for i386. Notes: svn path=/head/; revision=368372
2020-11-05linux(4): Deduplicate unimpl/dummy syscall handlersConrad Meyer
No functional change. Reviewed by: emaste, trasz Differential Revision: https://reviews.freebsd.org/D27099 Notes: svn path=/head/; revision=367395
2020-08-25Pass -fuse-ld=/path/to/ld if ${LD} != "ld"Alex Richardson
This is needed so that setting LD/XLD is not ignored when linking with $CC instead of directly using $LD. Currently only clang accepts an absolute path for -fuse-ld= (Clang 12+ will add a new --ld-path flag), so we now warn when building with GCC and $LD != "ld" since that might result in the wrong linker being used. We have been setting XLD=/path/to/cheri/ld.lld in CheriBSD for a long time and used a similar version of this patch to avoid linking with /usr/bin/ld. This change is also required when building FreeBSD on an Ubuntu with Clang: In that case we set XCC=/usr/lib/llvm-10/bin/clang and since /usr/lib/llvm-10/bin/ does not contain a "ld" binary the build fails with `clang: error: unable to execute command: Executable "ld" doesn't exist!` unless we pass -fuse-ld=/usr/lib/llvm-10/bin/ld.lld. This change passes -fuse-ld instead of copying ${XLD} to WOLRDTMP/bin/ld since then we would have to ensure that this file does not exist while building the bootstrap tools. The cross-linker might not be compatible with the host linker (e.g. when building on macos: host-linker= Mach-O /usr/bin/ld, cross-linker=LLVM ld.lld). Reviewed By: brooks, emaste Differential Revision: https://reviews.freebsd.org/D26055 Notes: svn path=/head/; revision=364761
2020-08-11Allow overriding the tool used for stripping binariesAlex Richardson
Since the make variable STRIP is already used for other purposes, this uses STRIPBIN (which is also used for the same purpose by install(1). This allows using LLVM objcopy to strip binaries instead of the in-tree elftoolchain objcopy. We make use of this in CheriBSD since passing binaries generated by our toolchain to elftoolchain strip sometimes results in assertion failures. This allows working around https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248516 by specifying STRIPBIN=/path/to/llvm-strip Obtained from: CheriBSD Reviewed By: emaste, brooks Differential Revision: https://reviews.freebsd.org/D25988 Notes: svn path=/head/; revision=364119
2020-04-18More fixes to build the kernel with a compiler that defaults to -fno-commonAlex Richardson
Using the same approach as the last commit for the files used by genassym.sh. Obtained from: CheriBSD Notes: svn path=/head/; revision=360072
2019-08-25Replace -Werror with ${WERROR} in module buildsWarner Losh
Notes: svn path=/head/; revision=351497
2019-05-13Add warning to the Linuxulator makefiles that building it outside of aDmitry Chagin
kernel does not make sence. PR: 222861 MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D20179 Notes: svn path=/head/; revision=347540
2019-05-13Linuxulator depends on a fundamental kernel settings such as SMP. ManyDmitry Chagin
of them listed in opt_global.h which is not generated while building modules outside of a kernel and such modules never match real cofigured kernel. So, we should prevent our users from building obviously defective modules. Therefore, remove the root cause of the building of modules outside of a kernel - the possibility of building modules with DEBUG or KTR flags. And remove all of DEBUG printfs as it is incomplete and in threaded programms not informative, also a half of system call does not have DEBUG printf. For debuging Linux programms we have dtrace, ktr and ktrace ability. PR: 222861 Reviewed by: trasz MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D20178 Notes: svn path=/head/; revision=347538
2019-05-06The build process generates assym.inc from genassym.o, so don't forgetDmitry Chagin
to clean genassym.o MFC after: 2 weeks Notes: svn path=/head/; revision=347196
2018-07-03All genassym.sh usage need offset.incBryan Drewery
Notes: svn path=/head/; revision=335910
2018-04-24Fix futexes on i386 after the 4/4G split.Konstantin Belousov
Use proper method to access userspace. For now, only the slow copyout path is implemented. Reported and tested by: tijl (previous version) Sponsored by: The FreeBSD Foundation Notes: svn path=/head/; revision=332930
2018-04-06Move most of the contents of opt_compat.h to opt_global.h.Brooks Davis
opt_compat.h is mentioned in nearly 180 files. In-progress network driver compabibility improvements may add over 100 more so this is closer to "just about everywhere" than "only some files" per the guidance in sys/conf/options. Keep COMPAT_LINUX32 in opt_compat.h as it is confined to a subset of sys/compat/linux/*.c. A fake _COMPAT_LINUX option ensure opt_compat.h is created on all architectures. Move COMPAT_LINUXKPI to opt_dontuse.h as it is only used to control the set of compiled files. Reviewed by: kib, cem, jhb, jtl Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D14941 Notes: svn path=/head/; revision=332122
2018-03-20Rename assym.s to assym.incEd Maste
assym is only to be included by other .s files, and should never actually be assembled by itself. Reviewed by: imp, bdrewery (earlier) Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D14180 Notes: svn path=/head/; revision=331254
2018-03-16Share a single bsd-linux errno table across MD consumersEd Maste
Three copies of the linuxulator linux_sysvec.c contained identical BSD to Linux errno translation tables, and future work to support other architectures will also use the same table. Move the table to a common file to be used by all. Make it 'const int' to place it in .rodata. (Some existing Linux architectures use MD errno values, but x86 and Arm share the generic set.) This change should introduce no functional change; a followup will add missing errno values. MFC after: 3 weeks Sponsored by: Turing Robotic Industries Inc. Differential Revision: https://reviews.freebsd.org/D14665 Notes: svn path=/head/; revision=331056
2018-02-05Move assym.s to DPSRCS in linux modulesEd Maste
assym.s exists only to be included by other .s files, and should not actually be assembled by itself. Sponsored by: Turing Robotic Industries Inc. Notes: svn path=/head/; revision=328883
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