src/gnu/lib/csu, branch releng/12.4

MFC r339738, r339744, r339770, r339773, r339864-r339866, r339907-r339908, r339912-r339913, r339916, r339954, r340213, r340395, r340840, r340910-r340911, r341424, r342773, r342974, r351027, r352073:

2019-09-16T13:41:24Z

MFC the BSD crtbegin to stable/12 but keep it disabled. r339738: Implement a BSD licensed crtbegin/crtend These are needed for .ctors/.dtors and .jcr handling. The former needs all the function pointers to be called in the correct order from the .init/.fini section. The latter just needs to call a gcj specific function if it exists with a pointer to the start of the .jcr section. This is currently disabled until __dso_handle support is added. Reviewed by: emaste Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D17587 r339744: Add a missing include for src.opts.mk. Without it MK_TESTS isn't defined. MFC with: r339738 Sponsored by: DARPA, AFRL r339770: Drop the csu tests WARNS to 5 to fix the powerpc64 build. MFC with: r339738 Sponsored by: DARPA, AFRL r339773: Add __dso_handle to the BSD crtbegin. This is used to identify shared objects. MFC with: r339738 Sponsored by: DARPA, AFRL r339864: Check __dso_handle is NULL in non-DSO objects. It should only be non-NULL when accessed from a shared object. MFC with: r339738 Sponsored by: DARPA, AFRL r339865: Include the csu test directories in BSD.tests.dist MFC with: r339738 Sponsored by: DARPA, AFRL r339866: Make the .ctors, .dtors, and .jcr markers as static. They shouldn't be accessible from out of the files they are defined in. MFC with: r339738 Sponsored by: DARPA, AFRL r339907: The jcr argument to _Jv_RegisterClasses is used, stop marking it otherwise. MFC with: r339738 Sponsored by: DARPA, AFRL r339908: Run the csu tests on a DSO. This builds the tests into a shared library, then runs these from the base test programs. With this we can check crtbeginS.o and crtendS.o are working as expected. MFC with: r339738 Sponsored by: DARPA, AFRL r339912: Fix the location of the static keyword. MFC with: r339738 Sponsored by: DARPA, AFRL r339913: Disable the .preinit_array test in DSOs, ld.bfd fails to link objects with the section. MFC with: r339738 Sponsored by: DARPA, AFRL r339916: Build the csu tests on all architectures. The tests haven't been run them, but this is enough to build them so I can get feedback on if the various crt.h headers are correct. MFC with: r339738 Sponsored by: DARPA, AFRL r339954: Add __used to __CTOR_LIST__ and __DTOR_LIST__ Enabling BSD_CRTBEGIN on amd64 resulted in error: unused variable '__CTOR_LIST__'. __CTOR_LIST__ is indeed unused in crtbegin.c; it marks the beginning of the .ctors array and is used in crtend.c. Annotate __DTOR_LIST__ as well for consistency. Discussed with: andrew MFC with: r339738 Sponsored by: The FreeBSD Foundation r340213: Add the (untested) mips and sparc64 .init call sequences. The BSD crtbegin/crtend code now builds on all architectures, however further work is needed to check if it works correctly. MFC with: r339738 Sponsored by: DARPA, AFRL r340395: Run __cxa_finalize in shared objects in the destructor path. When we have .dtors call them before .dtor handling, otherwise call from a destructor. PR: 233056 MFC with: r339738 Sponsored by: DARPA, AFRL r340840: Mark the function called by the MIPS .init/.fini sequence with .local. As with r328939 we need to mark local symbols as such. Without this the assembly parser treats the symbols as global and created relocations against these private symbols. MFC with: r339738 Sponsored by: DARPA, AFRL r340910: Add the missing 0 at the end of the .jcr section. Without this the dynamic library test was failing as it was calling _Jv_RegisterClasses multiple times. r340911: Re-enable the dynamiclib tests. These should be fixed by r340910. r341424: Disable the BSD CRT code on powerpc and sparc64, they need extra crt*.o files that haven't been implemented. Reported by: sbruno MFC with: r339738 Sponsored by: DARPA, AFRL r342773: Add explicit csu test dependency lib/csu/tests/dynamiclib requires libh_csu.so be built first. I'm not sure this is the most correct/best way to address this but it solves the issue in my testing. PR: 233734 Sponsored by: The FreeBSD Foundation r342974: Create crtsavres.o for powerpc builds Summary: GCC expects to link in a crtsavres.o on powerpc platforms. On powerpc64 this is an empty file, but on powerpc and powerpcspe this does contain some save/restore functions, which may not actually be necessary for newer modern GCC and clang. This appeases the in-tree gcc, though, and is needed in order to switch to the BSD CRTRBEGIN. PR: 233751 Reviewed By: andrew Differential Revision: https://reviews.freebsd.org/D18826 r351027: Enable BSD_CRTBEGIN on powerpc In r342974 jhibbits added support to build crtsavres.o. This was the blocker for BSD_CRTBEGIN to be enabled there. As such enable this option again. Reviewed by: jhibbits Sponsored by: DARPA, AFRL r352073: csu: Add the riscv .init call sequence Reviewed by: br Sponsored by: Axiado Differential Revision: https://reviews.freebsd.org/D21537

Convert gnu to using SRCTOP

2017-03-12T18:59:16Z

Prefer SRCTOP over CURDIR/../../contrib, etc. However, retain the "up one level" instances of ../ because they are really relative to this part of the tree and not a means to find the root of the tree. As such, it's better to leave them since that further the goal of being able to move directories if watned to in the future. Differential Revision: https://reviews.freebsd.org/D9932 Sponsored by: Netflix Silence On: arch@ (twice)

Follow-up r297842: Rework header generation to fix always rebuilding.

2016-04-18T18:13:58Z

This reworks the handling of common headers to just include the needed logic rather than invoke MAKE. This avoids the problem listed in r297842 and avoids other dependency tracking issues. Pointyhat to: bdrewery Reported by: Nikolai Lifanov Sponsored by: EMC / Isilon Storage Division

META_MODE: Avoid changed build command every build.

2016-04-12T02:45:19Z

Because the file is generated with -f using another Makefile, 2 different Makefiles are trying to handle the .meta file for the target. The obvious .NOMETA_CMP or .NOMETA on the ${MAKE} targets don't work as they are very limited in scope in bmake. Using .PHONY fixes the problem and ensures that the ${MAKE} command is always ran to check if it is outdated in the sub-make. An example of the problem in gnu/lib/libgcc (with make -dM): /usr/obj/root/git/freebsd/gnu/lib/libgcc/tm.h.meta: 2: a build command has changed TARGET_CPU_DEFAULT="" HEADERS="options.h i386/biarch64.h i386/i386.h i386/unix.h i386/att.h dbxelf.h elfos-undef.h elfos.h freebsd-native.h freebsd-spec.h freebsd.h i386/x86-64.h i386/freebsd.h i386/freebsd64.h defaults.h" DEFINES="" /bin/sh /root/git/freebsd/gnu/lib/libgcc/../../../contrib/gcc/mkconfig.sh tm.h vs (cd /root/git/freebsd/gnu/lib/libgcc; make -f /root/git/freebsd/gnu/lib/libgcc/../../usr.bin/cc/cc_tools/Makefile MFILE=/root/git/freebsd/gnu/lib/libgcc/../../usr.bin/cc/cc_tools/Makefile GCCDIR=/root/git/freebsd/gnu/lib/libgcc/../../../contrib/gcc tm.h) Skipping meta for tm.h: .NOMETA (cd /root/git/freebsd/gnu/lib/libgcc; make -f /root/git/freebsd/gnu/lib/libgcc/../../usr.bin/cc/cc_tools/Makefile MFILE=/root/git/freebsd/gnu/lib/libgcc/../../usr.bin/cc/cc_tools/Makefile GCCDIR=/root/git/freebsd/gnu/lib/libgcc/../../../contrib/gcc tm.h) `tm.h' is up to date. Sponsored by: EMC / Isilon Storage Division

Remove the old depend (mkdep) code and make FAST_DEPEND the one true way.

2016-03-30T23:50:23Z

Reviewed by: emaste, hselasky (partial), brooks (brief) Discussed on: arch@ Sponsored by: EMC / Isilon Storage Division Differential Revision: https://reviews.freebsd.org/D5742

DIRDEPS_BUILD: Regenerate without local dependencies.

2016-02-24T17:20:11Z

These are no longer needed after the recent 'beforebuild: depend' changes and hooking DIRDEPS_BUILD into a subset of FAST_DEPEND which supports skipping 'make depend'. Sponsored by: EMC / Isilon Storage Division

Remove redundant .NOPATH.

2015-09-26T14:15:01Z

All of these are already in CLEANFILES which is added to .NOPATH in bsd.obj.mk. Sponsored by: EMC / Isilon Storage Division

Fix installation of 32bit libraries after r288074.

2015-09-21T21:44:02Z

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

Replace realinstall: and META_MODE staging hacks with FILES mechanism.

2015-09-21T18:39:13Z

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

Add META_MODE support.

2015-06-13T19:20:56Z

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