glibc/sysdeps/sparc/sparc32/Makefile

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# Copyright (C) 1991-2024 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
Prefer https to http for gnu.org and fsf.org URLs Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
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# <https://www.gnu.org/licenses/>.
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ifeq ($(subdir),gnulib)
sysdep_routines = dotmul umul $(divrem) alloca
Do not build sparc32 libgcc functions into static libc Since GCC commit f31a019d1161ec78846473da743aedf49cca8c27 "Emit funcall external declarations only if actually used.", the glibc testsuite has failed to build for 32-bit SPARC with GCC mainline. /scratch/jmyers/glibc-bot/install/compilers/sparc64-linux-gnu/lib/gcc/sparc64-glibc-linux-gnu/14.0.0/../../../../sparc64-glibc-linux-gnu/bin/ld: /scratch/jmyers/glibc-bot/install/compilers/sparc64-linux-gnu/lib/gcc/sparc64-glibc-linux-gnu/14.0.0/32/libgcc.a(_divsi3.o): in function `.div': /scratch/jmyers/glibc-bot/src/gcc/libgcc/config/sparc/lb1spc.S:138: multiple definition of `.div'; /scratch/jmyers/glibc-bot/build/glibcs/sparcv9-linux-gnu/glibc/libc.a(sdiv.o):/scratch/jmyers/glibc-bot/src/glibc/gnulib/../sysdeps/sparc/sparc32/sparcv9/sdiv.S:13: first defined here /scratch/jmyers/glibc-bot/install/compilers/sparc64-linux-gnu/lib/gcc/sparc64-glibc-linux-gnu/14.0.0/../../../../sparc64-glibc-linux-gnu/bin/ld: disabling relaxation; it will not work with multiple definitions collect2: error: ld returned 1 exit status make[3]: *** [../Rules:298: /scratch/jmyers/glibc-bot/build/glibcs/sparcv9-linux-gnu/glibc/nptl/tst-cancel24-static] Error 1 https://sourceware.org/pipermail/libc-testresults/2023q4/012154.html I'm not sure of the exact sequence of undefined references that cause first the glibc object file defining .div and then the libgcc object file defining both .div and .udiv to be pulled in (which must have been perturbed by that GCC change in a way that introduced the build failure), but I think the failure illustrates that it's inherently fragile for glibc to define symbols in separate object files that libgcc defines in the same object file - and indeed for glibc to redefine libgcc symbols at all, since the division into object files shouldn't really be part of the interface between libgcc and libc. These symbols appear to be in libc only for compatibility, maybe one of the cases where they were accidentally exported from shared libc in glibc 2.0 before the introduction of symbol versioning and so programs started expecting shared libc to provide them. Thus, there is no need to have them in static libc. Add this set of libgcc functions to shared-only-routines so they are no longer provided in static libc. (No change is made regarding .mul - dotmul source file - since unlike the other symbols in this grouping, it doesn't actually appear to be a libgcc symbol, at least in current GCC.) Tested with build-many-glibcs.py for sparcv9-linux-gnu with GCC mainline.
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shared-only-routines += umul $(divrem)
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endif # gnulib
divrem := sdiv udiv rem urem
# libgcc __divdi3 and __moddi3 uses .udiv and since it is also exported by
# libc.so linker will create PLTs for the symbol. To avoid it we strong alias
# the exported libc one to __wrap_.udiv and use linker option --wrap to make any
# call to .udiv to call the wrapper symbol.
libc.so-gnulib += -Wl,--wrap=.udiv
Remove sysdeps/sparc/sparc32/soft-fp directory. As per <https://sourceware.org/ml/libc-alpha/2014-10/msg00369.html>, there should not be separate sysdeps/<arch>/soft-fp directories when those are used by all configurations that use sysdeps/<arch>, and, more generally, should not be sysdeps/foo/Implies files pointing to a subdirectory foo/bar. This patch eliminates the sysdeps/sparc/sparc32/soft-fp directory accordingly, merging its contents into sysdeps/sparc/sparc32. Tested with build-many-glibcs.py that installed stripped shared libraries for sparc configurations are unchanged by this patch. * sysdeps/sparc/sparc32/Implies: Remove sparc/sparc32/soft-fp. * sysdeps/sparc/sparc32/Makefile [$(subdir) = soft-fp] (sparc32-quad-routines): New variable. Moved from .... [$(subdir) = soft-fp] (sysdep_routines): Add $(sparc32-quad-routines). Moved from .... * sysdeps/sparc/sparc32/soft-fp/Makefile: ... here. Remove file. * sysdeps/sparc/sparc32/Versions (libc): Add GLIBC_2.4 symbols moved from .... * sysdeps/sparc/sparc32/soft-fp/Versions: ... here. Remove file. * sysdeps/sparc/sparc32/soft-fp/q_add.c: Move to .... * sysdeps/sparc/sparc32/q_add.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_cmp.c: Move to .... * sysdeps/sparc/sparc32/q_cmp.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_cmpe.c: Move to .... * sysdeps/sparc/sparc32/q_cmpe.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_div.c: Move to .... * sysdeps/sparc/sparc32/q_div.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_dtoq.c: Move to .... * sysdeps/sparc/sparc32/q_dtoq.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_feq.c: Move to .... * sysdeps/sparc/sparc32/q_feq.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_fge.c: Move to .... * sysdeps/sparc/sparc32/q_fge.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_fgt.c: Move to .... * sysdeps/sparc/sparc32/q_fgt.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_fle.c: Move to .... * sysdeps/sparc/sparc32/q_fle.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_flt.c: Move to .... * sysdeps/sparc/sparc32/q_flt.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_fne.c: Move to .... * sysdeps/sparc/sparc32/q_fne.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_itoq.c: Move to .... * sysdeps/sparc/sparc32/q_itoq.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_lltoq.c: Move to .... * sysdeps/sparc/sparc32/q_lltoq.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_mul.c: Move to .... * sysdeps/sparc/sparc32/q_mul.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_neg.c: Move to .... * sysdeps/sparc/sparc32/q_neg.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_qtod.c: Move to .... * sysdeps/sparc/sparc32/q_qtod.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_qtoi.c: Move to .... * sysdeps/sparc/sparc32/q_qtoi.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_qtoll.c: Move to .... * sysdeps/sparc/sparc32/q_qtoll.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_qtos.c: Move to .... * sysdeps/sparc/sparc32/q_qtos.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_qtou.c: Move to .... * sysdeps/sparc/sparc32/q_qtou.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_qtoull.c: Move to .... * sysdeps/sparc/sparc32/q_qtoull.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_sqrt.c: Move to .... * sysdeps/sparc/sparc32/q_sqrt.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_stoq.c: Move to .... * sysdeps/sparc/sparc32/q_stoq.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_sub.c: Move to .... * sysdeps/sparc/sparc32/q_sub.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_ulltoq.c: Move to .... * sysdeps/sparc/sparc32/q_ulltoq.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_util.c: Move to .... * sysdeps/sparc/sparc32/q_util.c: ... here. * sysdeps/sparc/sparc32/soft-fp/q_utoq.c: Move to .... * sysdeps/sparc/sparc32/q_utoq.c: ... here. * sysdeps/sparc/sparc32/soft-fp/sfp-machine.h: Move to .... * sysdeps/sparc/sparc32/sfp-machine.h: ... here.
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ifeq ($(subdir),soft-fp)
sparc32-quad-routines := q_add q_cmp q_cmpe q_div q_dtoq q_feq q_fge \
q_fgt q_fle q_flt q_fne q_itoq q_mul q_neg q_qtod q_qtoi \
q_qtos q_qtou q_qtoull q_qtoll q_sqrt q_stoq q_sub q_utoq \
q_ulltoq q_lltoq q_util
sysdep_routines += $(sparc32-quad-routines)
endif