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Move shlib support to toplevel libgcc gcc: PR translation/45116 * Makefile.in (slibdir): Remove, don't export. (SHLIB_NM_FLAGS): Remove. (libgcc.mvars): Don't emit SHLIB_LINK, SHLIB_INSTALL, SHLIB_DLLDIR, SHLIB_EXT, SHLIB_MKMAP, SHLIB_MKMAP_OPTS, SHLIB_MAPFILES, SHLIB_NM_FLAGS. (DRIVER_DEFINES): Test SHLIB instead of SHLIB_LINK. (gcc.o): Pass SHLIB instead of SHLIB_LINK. (gccspec.o): Likewise. (installdirs): Don't create $(DESTDIR)$(slibdir). * configure.ac (slibdir): Remove. * configure: Regenerate. * libgcc-libsystem.ver: Move to ../libgcc/config. * mkmap-flat.awk, mkmap-symver.awk: Move to ../libgcc. * config/libgcc-glibc.ver: Move to ../libgcc/config. * config/t-libunwind (SHLIB_LC): Remove. * config/t-linux (SHLIB_MAPFILES): Remove. * config/t-slibgcc-dummy: Rename to config/t-slibgcc. * config/t-slibgcc-elf-ver: Remove. * config/t-slibgcc-libgcc, config/t-slibgcc-nolc-override: Move to ../libgcc/config. * config/alpha/libgcc-alpha-ldbl.ver, config/alpha/t-linux: Move to ../libgcc/config/alpha. * config/alpha/t-vms (shlib_version, SHLIB_EXT, SHLIB_OBJS, SHLIB_NAME, SHLIB_MULTILIB, SHLIB_INSTALL, SHLIB_SYMVEC, SHLIB_SYMVECX2, SHLIB_LINK): Remove. * config/arm/libgcc-bpabi.ver: Move to ../libgcc/config/arm. * config/arm/t-bpabi (SHLIB_MAPFILES): Remove. * config/arm/t-netbsd (SHLIB_EXT, SHLIB_NAME, SHLIB_SONAME, SHLIB_OBJS, SHLIB_LINK, SHLIB_INSTALL): Remove. * config/arm/t-symbian (SHLIB_LC): Remove. * config/bfin/libgcc-bfin.ver: Move to ../libgcc/config/bfin/libgcc-glibc.ver. * config/bfin/t-bfin-linux (SHLIB_MAPFILES): Remove. * config/c6x/libgcc-c6xeabi.ver: Move to ../libgcc/config/c6x/libgcc-eabi.ver. * config/c6x/t-c6x-elf (SHLIB_MAPFILES): Remove. * config/cris/libgcc.ver: Move to ../libgcc/config/cris/libgcc-glibc.ver. * config/cris/t-linux (SHLIB_MAPFILES): Remove. * config/frv/libgcc-frv.ver: Move to ../libgcc/config/frv. * config/frv/t-linux (SHLIB_MAPFILES): Remove. * config/i386/darwin-libgcc.10.4.ver: Move to ../libgcc/config/i386/libgcc-darwin.10.4.ver. * config/i386/darwin-libgcc.10.5.ver: Move to ../libgcc/config/i386/libgcc-darwin.10.5.ver. * config/i386/libgcc-glibc.ver: Move to ../libgcc/config/i386. * config/i386/t-cygming (SHLIB_EXT, SHLIB_IMPLIB, SHLIB_SOVERSION, SHLIB_SONAME, SHLIB_MAP, SHLIB_OBJS, SHLIB_DIR, SHLIB_SLIBDIR_QUAL) SHLIB_PTHREAD_CFLAG, SHLIB_PTHREAD_LDFLAG, SHLIB_LINK, SHLIB_INSTALL, SHLIB_MKMAP, SHLIB_MKMAP_OPTS, SHLIB_MAPFILES): Remove. * config/i386/t-cygwin (SHLIB_LC, SHLIB_EH_EXTENSION, SHLIB_IMPLIB, SHLIB_SONAME, SHLIB_MKMAP_OPTS): Remove. * config/i386/t-dlldir, config/i386/t-dlldir-x: Move to ../libgcc/config/i386. * config/i386/t-dw2-eh, config/i386/t-sjlj-eh: Move to ../libgcc/config/i386. * config/i386/t-linux: Move to ../libgcc/config/i386. * config/i386/t-mingw-pthread: Move to ../libgcc/config/i386. * config/i386/t-mingw-w32 (SHLIB_LC): Remove. * config/i386/t-mingw-w64: Likewise. * config/i386/t-mingw32: Remove. * config/ia64/libgcc-glibc.ver, config/ia64/libgcc-ia64.ver: Move to ../libgcc/config/ia64. * config/ia64/t-glibc: Remove. * config/ia64/t-hpux (SHLIB_EXT, SHLIB_LINK, SHLIB_INSTALL): Remove. * config/ia64/t-ia64 (SHLIB_MAPFILES): Remove. * config/ia64/t-vms (shlib_version, SHLIB_EXT, SHLIB_OBJS, SHLIB_NAME, SHLIB_MULTILIB, SHLIB_INSTALL, SHLIB_LINK): Remove. * config/ia64/vms_symvec_libgcc_s.opt: Remove. * config/m32r/libgcc-glibc.ver: Move to ../libgcc/config/m32r. * config/m32r/t-linux (SHLIB_MAPFILES): Remove. * config/m68k/t-slibgcc-elf-ver: Move to ../libgcc/config/m68k. * config/mips/t-libgcc-mips16 (SHLIB_MAPFILES): Remove. * config/pa/t-hpux-shlib: Move to ../libgcc/config/pa/t-slibgcc-hpux. * config/pa/t-slibgcc-dwarf-ver, config/pa/t-slibgcc-sjsj-ver: Move to ../libgcc/config/pa. * config/rs6000/darwin-libgcc.10.4.ver: Move to ../libgcc/config/rs6000/libgcc-darwin.10.4.ver. * config/rs6000/darwin-libgcc.10.5.ver: Move to ../libgcc/config/rs6000/libgcc-darwin.10.5.ver. * config/rs6000/t-aix43 (SHLIB_EXT, SHLIB_LINK, SHLIB_INSTALL, SHLIB_LIBS, SHLIB_MKMAP, SHLIB_NM_FLAGS, AR_FLAGS_FOR_TARGET): Remove. * config/rs6000/t-aix52: Likewise. * config/sh/libgcc-excl.ver, config/sh/libgcc-glibc.ver: Move to ../libgcc/config/sh. * config/sparc/libgcc-sparc-glibc.ver: Move to ../libgcc/config/sparc/libgcc-glibc.ver. * config/sparc/t-linux: Move to ../libgcc/config/sparc. * config/xtensa/t-linux (SHLIB_MAPFILES): Remove. * config/xtensa/libgcc-xtensa.ver: Move to ../libgcc/config/xtensa/libgcc-glibc.ver. * config.gcc (*-*-freebsd*): Replace t-slibgcc-elf-ver with t-slibgcc in tmake_file. Remove t-slibgcc-nolc-override for *-*-freebsd[34], *-*-freebsd[34].* with pthreads. (*-*-linux*, frv-*-*linux*, *-*-kfreebsd*-gnu, *-*-knetbsd*-gnu, *-*-gnu*, *-*-kopensolaris*-gnu): Replace t-slibgcc-elf-ver with t-slibgcc in tmake_file. (*-*-netbsd*): Likewise. (*-*-solaris2*): Replace t-slibgcc-dummy with t-slibgcc in tmake_file. (*-*-*vms*): Add t-slibgcc to tmake_file. (alpha*-*-linux*): Remove alpha/t-linux from tmake_file. (alpha*-dec-osf5.1*): Replace t-slibgcc-dummy with t-slibgcc in tmake_file. (arm*-*-linux*): Remove t-slibgcc-libgcc from tmake_file for arm*-*-linux-*eabi. (bfin*-linux-uclibc*): Replace t-slibgcc-dummy with t-slibgcc in tmake_file. (crisv32-*-linux*, cris-*-linux*): Likewise. (hppa*-*-linux*): Remove t-slibgcc-libgcc, pa/t-slibgcc-sjlj-ver, pa/t-slibgcc-dwarf-ver from tmake_file. (hppa[12]*-*-hpux10*): Replace pa/t-hpux-shlib with t-slibgcc in tmake_file. Remove pa/t-slibgcc-sjlj-ver, pa/t-slibgcc-dwarf-ver from tmake_file. (hppa*64*-*-hpux11*): Likewise. (hppa[12]*-*-hpux11*): Likewise. (i[34567]86-*-darwin*): Replace t-slibgcc-dummy in t-slibgcc in tmake_file. (x86_64-*-darwin*): Likewise. (i[34567]86-*-cygwin*): Remove tmake_eh_file, tmake_dlldir_file. Add t-slibgcc to tmake_file. (i[34567]86-*-mingw*, x86_64-*-mingw*): Likewise. Remove i386/t-mingw32 from tmake_file unless x86_64-w64-*, i[34567]86-w64-*. Remove i386/t-mingw-pthread from tmake_file. (ia64*-*-linux*): Remove ia64/t-glibc from tmake_file. (ia64*-*-hpux*): Add t-slibgcc to tmake_file. (ia64-hp-*vms*): Likewise. (m32r-*-linux*): Replace t-slibgcc-elf-ver with t-slibgcc in tmake_file. (m32rle-*-linux*): Likewise. (m68k-*-linux*): Remove m68k/t-slibgcc-elf-ver from tmake_file. (microblaze*-linux*): Remove t-slibgcc-elf-ver, t-slibgcc-nolc-override from tmake_file. (mips-sgi-irix6.5*): Replace t-slibgcc-dummy with t-slibgcc in tmake_file. (powerpc-*-darwin*): Likewise. (powerpc64-*-darwin*): Likewise. (powerpc-*-freebsd*): Remove t-slibgcc-libgcc from tmake_file. (powerpc-*-linux*, powerpc64-*-linux*): Likewise. (rs6000-ibm-aix4.[3456789]*, powerpc-ibm-aix4.[3456789]*): Add t-slibgcc to tmake_file. (rs6000-ibm-aix5.1.*, powerpc-ibm-aix5.1.*): Likewise. (rs6000-ibm-aix5.2.*, powerpc-ibm-aix5.2.*): Likewise. (rs6000-ibm-aix5.3.*, powerpc-ibm-aix5.3.*): Likewise. (rs6000-ibm-aix[6789].*, powerpc-ibm-aix[6789].*): Likewise. (sparc-*-linux*): Remove sparc/t-linux from tmake_file. (sparc64-*-linux*): Likewise. (tic6x-*-uclinux): Replace t-slibgcc-elf-ver with t-slibgcc in tmake_file. (i[34567]86-*-linux*, x86_64-*-linux*, i[34567]86-*-kfreebsd*-gnu, x86_64-*-kfreebsd*-gnu, i[34567]86-*-gnu*): Remove i386/t-linux from tmake_file. gcc/cp: * Make-lang.in (g++spec.o): Pass SHLIB instead of SHLIB_LINK. gcc/fortran: * Makef-lang.in (gfortranspec.o): Pass SHLIB instead of SHLIB_LINK. gcc/go: * Make-lang.in (gospec.o): Pass SHLIB instead of SHLIB_LINK. gcc/java: * Make-lang.in (jvspec.o): Pass SHLIB instead of SHLIB_LINK. libgcc: * Makefile.in (SHLIB_NM_FLAGS): Set. * mkmap-flat.awk, mkmap-symver.awk: New files. * configure.ac (libgcc_cv_lib_sjlj_exceptions): Check for SjLj exceptions. * configure: Regenerate. * config/libgcc-glibc.ver: New file. * config/libgcc-libsystem.ver: New file. * config/t-libunwind (SHLIB_LC): Set. * config/t-linux: New file. * config/t-slibgcc (INSTALL_SHLIB): New. (SHLIB_INSTALL): Use it. * config/t-slibgcc-darwin (SHLIB_MKMAP): Use $(srcdir) to refer to mkmap-symver.awk. (SHLIB_MAPFILES): Don't append, adapt pathname. (SHLIB_VERPFX): Set. * config/t-slibgcc-elf-ver (SHLIB_MKMAP): Use $(srcdir) to refer to mkmap-symver.awk. * config/t-slibgcc-gld-nover, config/t-slibgcc-hpux, config/t-slibgcc-libgcc, config/t-slibgcc-vms: New files. * config/alpha/libgcc-alpha-ldbl.ver, config/alpha/t-linux: New files. * config/alpha/t-slibgcc-osf (SHLIB_MKMAP): Use $(srcdir) to refer to mkmap-flat.awk. * config/arm/t-bpabi (SHLIB_MAPFILES): Set. * config/bfin/libgcc-glibc.ver, config/bfin/t-linux: New files. * config/c6x/libgcc-eabi.ver, config/c6x/t-elf: New files. * config/cris/libgcc-glibc.ver, config/cris/t-linux: New files. * config/frv/libgcc-frv.ver, config/frv/t-linux: New files. * config/i386/libgcc-darwin.10.4.ver, config/i386/libgcc-darwin.10.5.ver, config/i386/libgcc-glibc.ver: New files. * config/i386/t-darwin: Remove. * config/i386/t-darwin64: Likewise. * config/i386/t-dw2-eh, config/i386/t-sjlj-eh: New files. * config/i386/t-slibgcc-cygming, config/i386/t-cygwin, config/i386/t-dlldir, config/i386/t-dlldir-x: New files. * config/i386/t-linux: New file. * config/i386/t-mingw32: New file. * config/ia64/libgcc-glibc.ver, config/ia64/libgcc-ia64.ver: New files. * config/ia64/t-glibc: Rename to ... * config/ia64/t-linux: ... this. (SHLIB_MAPFILES): Set. * config/ia64/t-glibc-libunwind: Rename to ... * config/ia64/t-linux-libunwind: ... this. * config/ia64/t-ia64 (SHLIB_MAPFILES): Set. * config/ia64/t-slibgcc-hpux: New file. * config/m32r/libgcc-glibc.ver, config/m32r/t-linux: New files. * config/m68k/t-slibgcc-elf-ver: New file. * config/mips/t-mips16 (SHLIB_MAPFILES): Set. * config/mips/t-slibgcc-irix (SHLIB_MKMAP): Use $(srcdir) to refer to mkmap-flat.awk. * config/pa/t-slibgcc-hpux: New file. * config/pa/t-slibgcc-dwarf-ver, config/pa/t-slibgcc-sjsj-ver: New files. * config/rs6000/libgcc-darwin.10.4.ver, config/rs6000/libgcc-darwin.10.5.ver: New files. * config/rs6000/libgcc-ppc-glibc.ver: Rename to config/rs6000/libgcc-glibc.ver. * config/rs6000/libgcc-ppc64.ver: Rename to config/rs6000/libgcc-ibm-ldouble.ver. * config/rs6000/t-darwin (SHLIB_VERPFX): Remove. * config/rs6000/t-ibm-ldouble (SHLIB_MAPFILES): Adapt filename. * config/rs6000/t-ldbl128: Rename to ... * config/rs6000/t-linux: ... this. (SHLIB_MAPFILES): Adapt filename. * config/rs6000/t-slibgcc-aix: New file. * config/sh/libgcc-excl.ver, config/sh/libgcc-glibc.ver: New files. * config/sh/t-linux (SHLIB_MAPFILES): Use $(srcdir) to refer to libgcc-excl.ver, libgcc-glibc.ver. (SHLIB_LINK, SHLIB_INSTALL): Remove. * config/sparc/libgcc-glibc.ver: New file. * config/sparc/t-linux: New file. * config/xtensa/libgcc-glibc.ver, config/xtensa/t-linux: New files. * config.host (*-*-freebsd*): Add t-slibgcc, t-slibgcc-gld, t-slibgcc-elf-ver to tmake_file. Add t-slibgcc-nolc-override to tmake_file for posix threads on *-*-freebsd[34]. (*-*-linux*, frv-*-*linux*, *-*-kfreebsd*-gnu, *-*-knetbsd*-gnu, *-*-gnu*, *-*-kopensolaris*-gnu): Add t-slibgcc, t-slibgcc-gld, t-slibgcc-elf-ver, t-linux to tmake_file. (*-*-netbsd*): Add t-slibgcc, t-slibgcc-gld, t-slibgcc-elf-ver to tmake_file. (alpha*-*-linux*): Add alpha/t-linux to tmake_file. (alpha64-dec-*vms*): Add t-slibgcc-vms to tmake_file. (alpha*-dec-*vms*): Likewise. (arm*-*-freebsd*): Append to tmake_file. (arm*-*-netbsdelf*): Add t-slibgcc-gld-nover to tmake_file. (arm*-*-linux*): Add t-slibgcc-libgcc to tmake_file for arm*-*-linux-*eabi. (arm*-*-eabi*, arm*-*-symbianelf*): Add t-slibgcc-nolc-override to tmake_file for arm*-*-symbianelf*. (bfin*-linux-uclibc*): Append to tmake_file, add bfin/t-linux. (cris-*-linux*, crisv32-*-linux*): Append to tmake_file, add cris/t-linux. (frv-*-*linux*): Append to tmake_file, add frv/t-linux. (hppa*-*-linux*): Add t-slibgcc-libgcc, pa/t-slibgcc-sjlj-ver, pa/t-slibgcc-dwarf-ver to tmake_file. (hppa[12]*-*-hpux10*): Add t-slibgcc, pa/t-slibgcc-sjlj-ver, pa/t-slibgcc-dwarf-ver, t-slibgcc-hpux, pa/t-slibgcc-hpux to tmake_file. (hppa*64*-*-hpux11*): Likewise. (hppa[12]*-*-hpux11*): Likewise. (x86_64-*-darwin*): Don't override tmake_file, but only keep i386/t-crtpc, i386/t-crtfm. (i[34567]86-*-cygwin*): Set tmake_eh_file, tmake_dlldir_file. Prepend $tmake_eh_file, $tmake_dlldir_file, i386/t-slibgcc-cygming to tmake_file. Add i386/t-cygwin to tmake_file. Prepent i386/t-mingw-pthread to tmake_file for posix threads. (i[34567]86-*-mingw*): Set tmake_eh_file, tmake_dlldir_file. Prepend $tmake_eh_file, $tmake_dlldir_file, i386/t-slibgcc-cygming to tmake_file. Add i386/t-mingw32 to tmake_file. (x86_64-*-mingw*): Likewise. (ia64*-*-freebsd*): Append to tmake_file. (ia64*-*-linux*): Append to tmake_file. Replace ia64/t-glibc by ia64/t-linux. Replace ia64/t-glibc-libunwind by ia64/t-linux-libunwind if using system libunwind. (ia64*-*-hpux*): Add t-slibgcc, ia64/t-slibgcc-hpux, t-slibgcc-hpux to tmake_file. (ia64-hp-*vms*): Add t-slibgcc-vms to tmake_file. (m32r-*-linux*): Append to tmake_file, add m32r/t-linux. (m32rle-*-linux*): Likewise. (m68k-*-linux*)): Add m68k/t-slibgcc-elf-ver to tmake_file unless sjlj exceptions. (microblaze*-linux*): New case. Append to tmake_file, add t-slibgcc-nolc-override. (powerpc-*-freebsd*): Add t-slibgcc-libgcc to tmake_file. (powerpc-*-linux*, powerpc64-*-linux*): Likewise. Replace rs6000/t-ldbl128 by rs6000/t-linux in tmake_file. (rs6000-ibm-aix4.[3456789]*, powerpc-ibm-aix4.[3456789]*): Add rs6000/t-slibgcc-aix to tmake_file. (rs6000-ibm-aix5.1.*, powerpc-ibm-aix5.1.*): Likewise. (rs6000-ibm-aix[56789].*, powerpc-ibm-aix[56789].*): Likewise. (sh-*-elf*, sh[12346l]*-*-elf*, sh-*-linux*) (sh[2346lbe]*-*-linux*, sh-*-netbsdelf*, shl*-*-netbsdelf*) (sh5-*-netbsd*, sh5l*-*-netbsd*, sh64-*-netbsd*) (sh64l*-*-netbsd*): Add t-slibgcc-libgcc to tmake_file for sh*-*-linux*. (sparc-*-linux*): Append to tmake_file for *-leon*. Add sparc/t-linux to tmake_file for non-Leon targets. (sparc64-*-linux*): Add sparc/t-linux to tmake_file. (tic6x-*-uclinux): New case. Add t-slibgcc, t-slibgcc-gld, t-slibgcc-elf-ver to tmake_file. (tic6x-*-*): Add c6x/t-elf to tmake_file. (xtensa*-*-linux*): Append to tmake_file, add xtensa/t-linux. (am33_2.0-*-linux*): Append to tmake_file. (i[34567]86-*-linux*, x86_64-*-linux*, i[34567]86-*-kfreebsd*-gnu) (i[34567]86-*-knetbsd*-gnu, i[34567]86-*-gnu*): Also handle x86_64-*-kfreebsd*-gnu. Add i386/t-linux to tmake_file. From-SVN: r180767
2011-11-02 11:49:46 +01:00
SHLIB_MAPFILES += $(srcdir)/config/rs6000/libgcc-glibc.ver
[RS6000] -mno-minimal-toc vs. power10 pcrelative We've had this hack in the libgcc config to build libgcc with -mcmodel=small for powerpc64 for a long time. It wouldn't be a bad thing if someone who knows the multilib machinery well could arrange for -mcmodel=small to be passed just for ppc64 when building for earlier than power10. But for now, make -mno-minimal-toc do nothing when pcrel. Which will do the right thing for any project that has copied libgcc's trick. We want this if configuring using --with-cpu=power10 to build a power10 pcrel libgcc. --mcmodel=small turns off pcrel. gcc/ * config/rs6000/linux64.h (SUBSUBTARGET_OVERRIDE_OPTIONS): Don't set -mcmodel=small for -mno-minimal-toc when pcrel. libgcc/ * config/rs6000/t-linux: Document purpose of -mno-minimal-toc.
2020-09-28 08:53:01 +02:00
HOST_LIBGCC2_CFLAGS += -mlong-double-128
# This is a way of selecting -mcmodel=small for ppc64, which gives
# smaller and faster libgcc code. Directly specifying -mcmodel=small
# would need to take into account targets for which -mcmodel is invalid.
HOST_LIBGCC2_CFLAGS += -mno-minimal-toc
PowerPC: PR libgcc/97543 and libgcc/97643, fix long double issues If you use a compiler with long double defaulting to 64-bit instead of 128-bit with IBM extended double, you get linker warnings about mis-matches in the gnu attributes for long double (PR libgcc/97543). Even if the compiler is configured to have long double be 64 bit as the default with the configuration option '--without-long-double-128' you get the warnings. You also get the same issues if you use a compiler with long double defaulting to IEEE 128-bit instead of IBM extended double (PR libgcc/97643). The issue is the way libgcc.a/libgcc.so is built. Right now when building libgcc under Linux, the long double size is set to 128-bits when building libgcc. However, the gnu attributes are set, leading to the warnings. One feature of the current GNU attribute implementation is if you have a shared library (such as libgcc_s.so), the GNU attributes for the shared library is an inclusive OR of all of the objects within the library. This means if any object file that uses the -mlong-double-128 option and uses long double, the GNU attributes for the library will indicate that it uses 128-bit IBM long doubles. If you have a static library, you will get the warning only if you actually reference an object file with the attribute set. This patch does two things: 1) All of the object files that support IBM 128-bit long doubles explicitly set the ABI to IBM extended double. 2) I turned off GNU attributes for building the shared library or for building the IBM 128-bit long double support. libgcc/ 2020-12-03 Michael Meissner <meissner@linux.ibm.com> PR libgcc/97543 PR libgcc/97643 * config/rs6000/t-linux (IBM128_STATIC_OBJS): New make variable. (IBM128_SHARED_OBJS): New make variable. (IBM128_OBJS): New make variable. Set all objects to use the explicit IBM format, and disable gnu attributes. (IBM128_CFLAGS): New make variable. (gcc_s_compile): Add -mno-gnu-attribute to all shared library modules.
2020-12-03 20:50:26 +01:00
# On the modules that deal with IBM 128-bit values, make sure that TFmode uses
# the IBM extended double format. Also turn off gnu attributes on the static
# modules.
IBM128_STATIC_OBJS = ibm-ldouble$(objext) _powitf2$(objext) \
rs6000: Fix up libgcc ABI when built with --with-long-double-format=ieee [PR97653] __floatunditf and __fixtfdi and a couple of other libgcc{.a,_s.so} entrypoints for backwards compatibility should mean IBM double double handling (i.e. IFmode), gcc emits such calls for that format and form IEEE long double emits *kf* instead. When gcc is configured without --with-long-double-format=ieee , everything is fine, but when it is not, we need to compile those libgcc sources with -mno-gnu-attribute -mabi=ibmlongdouble. The following snippet in libgcc/config/rs6000/t-linux was attempting to ensure that, and for some routines it works fine (e.g. for _powitf2). But, due to 4 different types of bugs it doesn't work for most of those functions, which means that in --with-long-double-format=ieee configured gcc those *tf* entrypoints instead handle the long double arguments as if they were KFmode. The bugs are: 1) the first few objs properly use $(objext) as suffix, but several other contain a typo and use $(object) instead, which is a variable that isn't set to anything, so we don't add .o etc. extensions 2) while unsigned fix are properly called _fixuns*, unsigned float are called _floatun* (without s), but the var was using there the extra s and so didn't match 3) the variable didn't cover any of the TF <-> TI conversions, only TF <-> DI conversions 4) nothing in libgcc_s.so was handled, as those object files are called *_s.o rather than *.o and IBM128_SHARED_OBJS used wrong syntax of the GNU make substitution reference, which should be $(var:a=b) standing for $(patsubst a,b,$(var)) but it used $(var:a:b) instead 2021-04-03 Jakub Jelinek <jakub@redhat.com> PR target/97653 * config/rs6000/t-linux (IBM128_STATIC_OBJS): Fix spelling, use $(objext) instead of $(object). Use _floatunditf instead of _floatunsditf. Add tf <-> ti conversion objects. (IBM128_SHARED_OBJS): Use proper substitution reference syntax.
2021-04-03 10:05:32 +02:00
ppc64-fp$(objext) _divtc3$(objext) _multc3$(objext) \
_fixtfdi$(objext) _fixunstfdi$(objext) \
_floatditf$(objext) _floatunditf$(objext) \
_fixtfti$(objext) _fixunstfti$(objext) \
_floattitf$(objext) _floatuntitf$(objext)
IBM128_SHARED_OBJS = $(IBM128_STATIC_OBJS:$(objext)=_s$(objext))
PowerPC: PR libgcc/97543 and libgcc/97643, fix long double issues If you use a compiler with long double defaulting to 64-bit instead of 128-bit with IBM extended double, you get linker warnings about mis-matches in the gnu attributes for long double (PR libgcc/97543). Even if the compiler is configured to have long double be 64 bit as the default with the configuration option '--without-long-double-128' you get the warnings. You also get the same issues if you use a compiler with long double defaulting to IEEE 128-bit instead of IBM extended double (PR libgcc/97643). The issue is the way libgcc.a/libgcc.so is built. Right now when building libgcc under Linux, the long double size is set to 128-bits when building libgcc. However, the gnu attributes are set, leading to the warnings. One feature of the current GNU attribute implementation is if you have a shared library (such as libgcc_s.so), the GNU attributes for the shared library is an inclusive OR of all of the objects within the library. This means if any object file that uses the -mlong-double-128 option and uses long double, the GNU attributes for the library will indicate that it uses 128-bit IBM long doubles. If you have a static library, you will get the warning only if you actually reference an object file with the attribute set. This patch does two things: 1) All of the object files that support IBM 128-bit long doubles explicitly set the ABI to IBM extended double. 2) I turned off GNU attributes for building the shared library or for building the IBM 128-bit long double support. libgcc/ 2020-12-03 Michael Meissner <meissner@linux.ibm.com> PR libgcc/97543 PR libgcc/97643 * config/rs6000/t-linux (IBM128_STATIC_OBJS): New make variable. (IBM128_SHARED_OBJS): New make variable. (IBM128_OBJS): New make variable. Set all objects to use the explicit IBM format, and disable gnu attributes. (IBM128_CFLAGS): New make variable. (gcc_s_compile): Add -mno-gnu-attribute to all shared library modules.
2020-12-03 20:50:26 +01:00
IBM128_OBJS = $(IBM128_STATIC_OBJS) $(IBM128_SHARED_OBJS)
IBM128_CFLAGS = -Wno-psabi -mabi=ibmlongdouble -mno-gnu-attribute
$(IBM128_OBJS) : INTERNAL_CFLAGS += $(IBM128_CFLAGS)
# Turn off gnu attributes for long double size on all of the shared library
# modules, but leave it on for the static modules, except for the functions
# that explicitly process IBM 128-bit floating point. Shared libraries only
# have one gnu attribute for the whole library, and it can lead to warnings if
# somebody changes the long double format. We leave it on for the static
# modules to catch mis-compilation errors.
gcc_s_compile += -mno-gnu-attribute