[OE-core] [OE-Core][PATCH 11/13] gcc: More places to patch to disable ldbl 128 for musl on PPC
Khem Raj
raj.khem at gmail.com
Fri Dec 14 23:44:14 UTC 2018
On Fri, Dec 14, 2018 at 9:58 AM Serhey Popovych
<serhe.popovych at gmail.com> wrote:
>
> There are four functions using TFmode type (128bit) that isn't
> available when building with musl. Move each of them from common
> ppc64-fp.c to individual files referenced from t-float128 that used
> when ldbl 128 enabled at configure time.
>
> For gcc-7.3 if -mfloat128 is given -mfloat128-type must be given too.
>
> Exclude ibm-ldouble.c when ldbl 128 isn't enabled at config time.
>
> Build and boot tested with musl (no float128) and glibc (float128
> and ibm128 on PowerPC64).
>
We should be dropping gcc 7 support in master for next release. Gcc 8 one is ok
probably worth submitting it to gcc upstream as well.
> Signed-off-by: Serhey Popovych <serhe.popovych at gmail.com>
> ---
> ...44-libgcc-Add-knob-to-use-ldbl-128-on-ppc.patch | 391 ++++++++++++++++++++-
> ...34-libgcc-Add-knob-to-use-ldbl-128-on-ppc.patch | 342 +++++++++++++++++-
> 2 files changed, 731 insertions(+), 2 deletions(-)
>
> diff --git a/meta/recipes-devtools/gcc/gcc-7.3/0044-libgcc-Add-knob-to-use-ldbl-128-on-ppc.patch b/meta/recipes-devtools/gcc/gcc-7.3/0044-libgcc-Add-knob-to-use-ldbl-128-on-ppc.patch
> index e39af9b..f4dd891 100644
> --- a/meta/recipes-devtools/gcc/gcc-7.3/0044-libgcc-Add-knob-to-use-ldbl-128-on-ppc.patch
> +++ b/meta/recipes-devtools/gcc/gcc-7.3/0044-libgcc-Add-knob-to-use-ldbl-128-on-ppc.patch
> @@ -36,14 +36,385 @@ diff --git a/libgcc/config/rs6000/t-linux b/libgcc/config/rs6000/t-linux
> index 4f6d4c4a4d2..c50dd94a2da 100644
> --- a/libgcc/config/rs6000/t-linux
> +++ b/libgcc/config/rs6000/t-linux
> -@@ -1,3 +1,6 @@
> +@@ -1,3 +1,9 @@
> SHLIB_MAPFILES += $(srcdir)/config/rs6000/libgcc-glibc.ver
>
> -HOST_LIBGCC2_CFLAGS += -mlong-double-128 -mno-minimal-toc
> +ifeq ($(with_ldbl128),yes)
> +HOST_LIBGCC2_CFLAGS += -mlong-double-128
> ++else
> ++# We do not want to build ibm-ldouble.c.
> ++LIB2ADD := $(filter-out %ibm-ldouble.c, $(LIB2ADD))
> +endif
> +HOST_LIBGCC2_CFLAGS += -mno-minimal-toc
> +diff --git a/libgcc/config/rs6000/fixtfdi.c b/libgcc/config/rs6000/fixtfdi.c
> +new file mode 100644
> +index 0000000..9b979d0
> +--- /dev/null
> ++++ b/libgcc/config/rs6000/fixtfdi.c
> +@@ -0,0 +1,42 @@
> ++/* Software floating-point emulation.
> ++ Convert a to 64bit signed integer
> ++ Copyright (C) 1997-2016 Free Software Foundation, Inc.
> ++ This file is part of the GNU C Library.
> ++ Contributed by Richard Henderson (rth at cygnus.com) and
> ++ Jakub Jelinek (jj at ultra.linux.cz).
> ++
> ++ 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.
> ++
> ++ In addition to the permissions in the GNU Lesser General Public
> ++ License, the Free Software Foundation gives you unlimited
> ++ permission to link the compiled version of this file into
> ++ combinations with other programs, and to distribute those
> ++ combinations without any restriction coming from the use of this
> ++ file. (The Lesser General Public License restrictions do apply in
> ++ other respects; for example, they cover modification of the file,
> ++ and distribution when not linked into a combine executable.)
> ++
> ++ 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.
> ++
> ++ You should have received a copy of the GNU Lesser General Public
> ++ License along with the GNU C Library; if not, see
> ++ <http://www.gnu.org/licenses/>. */
> ++
> ++#ifdef _ARCH_PPC64
> ++#include "soft-fp.h"
> ++#include "quad-float128.h"
> ++
> ++DItype
> ++__fixtfdi (TFtype a)
> ++{
> ++ if (a < 0)
> ++ return - __fixunstfdi (-a);
> ++ return __fixunstfdi (a);
> ++}
> ++#endif
> +diff --git a/libgcc/config/rs6000/fixunstfdi.c b/libgcc/config/rs6000/fixunstfdi.c
> +new file mode 100644
> +index 0000000..65e9590
> +--- /dev/null
> ++++ b/libgcc/config/rs6000/fixunstfdi.c
> +@@ -0,0 +1,58 @@
> ++/* Software floating-point emulation.
> ++ Convert a to 64bit unsigned integer
> ++ Copyright (C) 1997-2016 Free Software Foundation, Inc.
> ++ This file is part of the GNU C Library.
> ++ Contributed by Richard Henderson (rth at cygnus.com) and
> ++ Jakub Jelinek (jj at ultra.linux.cz).
> ++
> ++ 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.
> ++
> ++ In addition to the permissions in the GNU Lesser General Public
> ++ License, the Free Software Foundation gives you unlimited
> ++ permission to link the compiled version of this file into
> ++ combinations with other programs, and to distribute those
> ++ combinations without any restriction coming from the use of this
> ++ file. (The Lesser General Public License restrictions do apply in
> ++ other respects; for example, they cover modification of the file,
> ++ and distribution when not linked into a combine executable.)
> ++
> ++ 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.
> ++
> ++ You should have received a copy of the GNU Lesser General Public
> ++ License along with the GNU C Library; if not, see
> ++ <http://www.gnu.org/licenses/>. */
> ++
> ++#ifdef _ARCH_PPC64
> ++#include "soft-fp.h"
> ++#include "quad-float128.h"
> ++
> ++DItype
> ++__fixunstfdi (TFtype a)
> ++{
> ++ if (a < 0)
> ++ return 0;
> ++
> ++ /* Compute high word of result, as a flonum. */
> ++ const TFtype b = (a / (((UDItype) 1) << (sizeof (SItype) * 8)));
> ++ /* Convert that to fixed (but not to DItype!),
> ++ and shift it into the high word. */
> ++ UDItype v = (USItype) b;
> ++ v <<= (sizeof (SItype) * 8);
> ++ /* Remove high part from the TFtype, leaving the low part as flonum. */
> ++ a -= (TFtype) v;
> ++ /* Convert that to fixed (but not to DItype!) and add it in.
> ++ Sometimes A comes out negative. This is significant, since
> ++ A has more bits than a long int does. */
> ++ if (a < 0)
> ++ v -= (USItype) (-a);
> ++ else
> ++ v += (USItype) a;
> ++ return v;
> ++}
> ++#endif
> +diff --git a/libgcc/config/rs6000/floatditf.c b/libgcc/config/rs6000/floatditf.c
> +new file mode 100644
> +index 0000000..20ad4c6
> +--- /dev/null
> ++++ b/libgcc/config/rs6000/floatditf.c
> +@@ -0,0 +1,47 @@
> ++/* Software floating-point emulation.
> ++ Convert a 64bit signed integer to IEEE quad
> ++ Copyright (C) 1997-2016 Free Software Foundation, Inc.
> ++ This file is part of the GNU C Library.
> ++ Contributed by Richard Henderson (rth at cygnus.com) and
> ++ Jakub Jelinek (jj at ultra.linux.cz).
> ++
> ++ 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.
> ++
> ++ In addition to the permissions in the GNU Lesser General Public
> ++ License, the Free Software Foundation gives you unlimited
> ++ permission to link the compiled version of this file into
> ++ combinations with other programs, and to distribute those
> ++ combinations without any restriction coming from the use of this
> ++ file. (The Lesser General Public License restrictions do apply in
> ++ other respects; for example, they cover modification of the file,
> ++ and distribution when not linked into a combine executable.)
> ++
> ++ 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.
> ++
> ++ You should have received a copy of the GNU Lesser General Public
> ++ License along with the GNU C Library; if not, see
> ++ <http://www.gnu.org/licenses/>. */
> ++
> ++#ifdef _ARCH_PPC64
> ++#include "soft-fp.h"
> ++#include "double.h"
> ++#include "quad-float128.h"
> ++
> ++TFtype
> ++__floatditf (DItype u)
> ++{
> ++ DFtype dh, dl;
> ++
> ++ dh = (SItype) (u >> (sizeof (SItype) * 8));
> ++ dh *= 2.0 * (((UDItype) 1) << ((sizeof (SItype) * 8) - 1));
> ++ dl = (USItype) (u & ((((UDItype) 1) << (sizeof (SItype) * 8)) - 1));
> ++
> ++ return (TFtype) dh + (TFtype) dl;
> ++}
> ++#endif
> +diff --git a/libgcc/config/rs6000/floatunditf.c b/libgcc/config/rs6000/floatunditf.c
> +new file mode 100644
> +index 0000000..23dbde2
> +--- /dev/null
> ++++ b/libgcc/config/rs6000/floatunditf.c
> +@@ -0,0 +1,47 @@
> ++/* Software floating-point emulation.
> ++ Convert a 64bit unsigned integer to IEEE quad
> ++ Copyright (C) 1997-2016 Free Software Foundation, Inc.
> ++ This file is part of the GNU C Library.
> ++ Contributed by Richard Henderson (rth at cygnus.com) and
> ++ Jakub Jelinek (jj at ultra.linux.cz).
> ++
> ++ 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.
> ++
> ++ In addition to the permissions in the GNU Lesser General Public
> ++ License, the Free Software Foundation gives you unlimited
> ++ permission to link the compiled version of this file into
> ++ combinations with other programs, and to distribute those
> ++ combinations without any restriction coming from the use of this
> ++ file. (The Lesser General Public License restrictions do apply in
> ++ other respects; for example, they cover modification of the file,
> ++ and distribution when not linked into a combine executable.)
> ++
> ++ 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.
> ++
> ++ You should have received a copy of the GNU Lesser General Public
> ++ License along with the GNU C Library; if not, see
> ++ <http://www.gnu.org/licenses/>. */
> ++
> ++#ifdef _ARCH_PPC64
> ++#include "soft-fp.h"
> ++#include "double.h"
> ++#include "quad-float128.h"
> ++
> ++TFtype
> ++__floatunditf (UDItype u)
> ++{
> ++ DFtype dh, dl;
> ++
> ++ dh = (USItype) (u >> (sizeof (SItype) * 8));
> ++ dh *= 2.0 * (((UDItype) 1) << ((sizeof (SItype) * 8) - 1));
> ++ dl = (USItype) (u & ((((UDItype) 1) << (sizeof (SItype) * 8)) - 1));
> ++
> ++ return (TFtype) dh + (TFtype) dl;
> ++}
> ++#endif
> +diff --git a/libgcc/config/rs6000/ppc64-fp.c b/libgcc/config/rs6000/ppc64-fp.c
> +index 5e1cbdd..70ad3c9 100644
> +--- a/libgcc/config/rs6000/ppc64-fp.c
> ++++ b/libgcc/config/rs6000/ppc64-fp.c
> +@@ -25,33 +25,20 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
> + <http://www.gnu.org/licenses/>. */
> +
> + #if defined(__powerpc64__) || defined (__64BIT__) || defined(__ppc64__)
> +-#define TMODES
> + #include "fp-bit.h"
> +
> +-extern DItype __fixtfdi (TFtype);
> + extern DItype __fixdfdi (DFtype);
> + extern DItype __fixsfdi (SFtype);
> + extern USItype __fixunsdfsi (DFtype);
> + extern USItype __fixunssfsi (SFtype);
> +-extern TFtype __floatditf (DItype);
> +-extern TFtype __floatunditf (UDItype);
> + extern DFtype __floatdidf (DItype);
> + extern DFtype __floatundidf (UDItype);
> + extern SFtype __floatdisf (DItype);
> + extern SFtype __floatundisf (UDItype);
> +-extern DItype __fixunstfdi (TFtype);
> +
> + static DItype local_fixunssfdi (SFtype);
> + static DItype local_fixunsdfdi (DFtype);
> +
> +-DItype
> +-__fixtfdi (TFtype a)
> +-{
> +- if (a < 0)
> +- return - __fixunstfdi (-a);
> +- return __fixunstfdi (a);
> +-}
> +-
> + DItype
> + __fixdfdi (DFtype a)
> + {
> +@@ -86,30 +73,6 @@ __fixunssfsi (SFtype a)
> + return (SItype) a;
> + }
> +
> +-TFtype
> +-__floatditf (DItype u)
> +-{
> +- DFtype dh, dl;
> +-
> +- dh = (SItype) (u >> (sizeof (SItype) * 8));
> +- dh *= 2.0 * (((UDItype) 1) << ((sizeof (SItype) * 8) - 1));
> +- dl = (USItype) (u & ((((UDItype) 1) << (sizeof (SItype) * 8)) - 1));
> +-
> +- return (TFtype) dh + (TFtype) dl;
> +-}
> +-
> +-TFtype
> +-__floatunditf (UDItype u)
> +-{
> +- DFtype dh, dl;
> +-
> +- dh = (USItype) (u >> (sizeof (SItype) * 8));
> +- dh *= 2.0 * (((UDItype) 1) << ((sizeof (SItype) * 8) - 1));
> +- dl = (USItype) (u & ((((UDItype) 1) << (sizeof (SItype) * 8)) - 1));
> +-
> +- return (TFtype) dh + (TFtype) dl;
> +-}
> +-
> + DFtype
> + __floatdidf (DItype u)
> + {
> +@@ -183,30 +146,6 @@ __floatundisf (UDItype u)
> + return (SFtype) f;
> + }
> +
> +-DItype
> +-__fixunstfdi (TFtype a)
> +-{
> +- if (a < 0)
> +- return 0;
> +-
> +- /* Compute high word of result, as a flonum. */
> +- const TFtype b = (a / (((UDItype) 1) << (sizeof (SItype) * 8)));
> +- /* Convert that to fixed (but not to DItype!),
> +- and shift it into the high word. */
> +- UDItype v = (USItype) b;
> +- v <<= (sizeof (SItype) * 8);
> +- /* Remove high part from the TFtype, leaving the low part as flonum. */
> +- a -= (TFtype) v;
> +- /* Convert that to fixed (but not to DItype!) and add it in.
> +- Sometimes A comes out negative. This is significant, since
> +- A has more bits than a long int does. */
> +- if (a < 0)
> +- v -= (USItype) (-a);
> +- else
> +- v += (USItype) a;
> +- return v;
> +-}
> +-
> + /* This version is needed to prevent recursion; fixunsdfdi in libgcc
> + calls fixdfdi, which in turn calls calls fixunsdfdi. */
> +
> +diff --git a/libgcc/config/rs6000/quad-float128.h b/libgcc/config/rs6000/quad-float128.h
> +index 7d69c87..a0c2664 100644
> +--- a/libgcc/config/rs6000/quad-float128.h
> ++++ b/libgcc/config/rs6000/quad-float128.h
> +@@ -99,6 +99,11 @@ extern TItype_ppc __fixkfti (TFtype);
> + extern UTItype_ppc __fixunskfti (TFtype);
> + extern TFtype __floattikf (TItype_ppc);
> + extern TFtype __floatuntikf (UTItype_ppc);
> ++
> ++extern DItype_ppc __fixtfdi (TFtype);
> ++extern DItype_ppc __fixunstfdi (TFtype);
> ++extern TFtype __floatditf (DItype_ppc);
> ++extern TFtype __floatunditf (UDItype_ppc);
> + #endif
> +
> + /* Functions using the ISA 3.0 hardware support. If the code is compiled with
> +diff --git a/libgcc/config/rs6000/t-float128 b/libgcc/config/rs6000/t-float128
> +index 2c52ca6..3a241aa 100644
> +--- a/libgcc/config/rs6000/t-float128
> ++++ b/libgcc/config/rs6000/t-float128
> +@@ -24,6 +24,7 @@ fp128_softfp_obj = $(fp128_softfp_static_obj) $(fp128_softfp_shared_obj)
> +
> + # New functions for software emulation
> + fp128_ppc_funcs = floattikf floatuntikf fixkfti fixunskfti \
> ++ floatditf floatunditf fixtfdi fixunstfdi \
> + extendkftf2-sw trunctfkf2-sw \
> + sfp-exceptions _mulkc3 _divkc3
> +
> +@@ -58,7 +59,7 @@ fp128_includes = $(srcdir)/soft-fp/double.h \
> + $(srcdir)/soft-fp/soft-fp.h
> +
> + # Build the emulator without ISA 3.0 hardware support.
> +-FP128_CFLAGS_SW = -Wno-type-limits -mvsx -mfloat128 \
> ++FP128_CFLAGS_SW = -Wno-type-limits -mvsx -mfloat128 -mfloat128-type \
> + -mno-float128-hardware \
> + -I$(srcdir)/soft-fp \
> + -I$(srcdir)/config/rs6000 \
> +diff --git a/libgcc/config/rs6000/t-float128-hw b/libgcc/config/rs6000/t-float128-hw
> +index 161062f..0476874 100644
> +--- a/libgcc/config/rs6000/t-float128-hw
> ++++ b/libgcc/config/rs6000/t-float128-hw
> +@@ -21,7 +21,7 @@ fp128_ifunc_obj = $(fp128_ifunc_static_obj) $(fp128_ifunc_shared_obj)
> + fp128_sed_hw = -hw
> +
> + # Build the hardware support functions with appropriate hardware support
> +-FP128_CFLAGS_HW = -Wno-type-limits -mvsx -mfloat128 \
> ++FP128_CFLAGS_HW = -Wno-type-limits -mvsx -mfloat128 -mfloat128-type \
> + -mpower8-vector -mpower9-vector \
> + -mfloat128-hardware \
> + -I$(srcdir)/soft-fp \
> diff --git a/libgcc/configure b/libgcc/configure
> old mode 100644
> new mode 100755
> @@ -96,6 +467,15 @@ index 45c459788c3..e2d19b144b8
> # Check whether --with-aix-soname was given.
> if test "${with_aix_soname+set}" = set; then :
> withval=$with_aix_soname; case "${host}:${enable_shared}" in
> +@@ -4999,7 +4999,7 @@ case ${host} in
> + # for hardware support.
> + powerpc*-*-linux*)
> + saved_CFLAGS="$CFLAGS"
> +- CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128"
> ++ CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128 -mfloat128-type"
> + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for PowerPC ISA 2.06 to build __float128 libraries" >&5
> + $as_echo_n "checking for PowerPC ISA 2.06 to build __float128 libraries... " >&6; }
> + if test "${libgcc_cv_powerpc_float128+set}" = set; then :
> diff --git a/libgcc/configure.ac b/libgcc/configure.ac
> index af151473709..dada52416da 100644
> --- a/libgcc/configure.ac
> @@ -119,6 +499,15 @@ index af151473709..dada52416da 100644
> AC_ARG_WITH(aix-soname,
> [AS_HELP_STRING([--with-aix-soname=aix|svr4|both],
> [shared library versioning (aka "SONAME") variant to provide on AIX])],
> +@@ -394,7 +394,7 @@ case ${host} in
> + # for hardware support.
> + powerpc*-*-linux*)
> + saved_CFLAGS="$CFLAGS"
> +- CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128"
> ++ CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128 -mfloat128-type"
> + AC_CACHE_CHECK([for PowerPC ISA 2.06 to build __float128 libraries],
> + [libgcc_cv_powerpc_float128],
> + [AC_COMPILE_IFELSE(
> --
> 2.12.2
>
> diff --git a/meta/recipes-devtools/gcc/gcc-8.2/0034-libgcc-Add-knob-to-use-ldbl-128-on-ppc.patch b/meta/recipes-devtools/gcc/gcc-8.2/0034-libgcc-Add-knob-to-use-ldbl-128-on-ppc.patch
> index 7a69ea2..391cda7 100644
> --- a/meta/recipes-devtools/gcc/gcc-8.2/0034-libgcc-Add-knob-to-use-ldbl-128-on-ppc.patch
> +++ b/meta/recipes-devtools/gcc/gcc-8.2/0034-libgcc-Add-knob-to-use-ldbl-128-on-ppc.patch
> @@ -37,14 +37,354 @@ diff --git a/libgcc/config/rs6000/t-linux b/libgcc/config/rs6000/t-linux
> index 4f6d4c4a4d2..c50dd94a2da 100644
> --- a/libgcc/config/rs6000/t-linux
> +++ b/libgcc/config/rs6000/t-linux
> -@@ -1,3 +1,6 @@
> +@@ -1,3 +1,9 @@
> SHLIB_MAPFILES += $(srcdir)/config/rs6000/libgcc-glibc.ver
>
> -HOST_LIBGCC2_CFLAGS += -mlong-double-128 -mno-minimal-toc
> +ifeq ($(with_ldbl128),yes)
> +HOST_LIBGCC2_CFLAGS += -mlong-double-128
> ++else
> ++# We do not want to build ibm-ldouble.c.
> ++LIB2ADD := $(filter-out %ibm-ldouble.c, $(LIB2ADD))
> +endif
> +HOST_LIBGCC2_CFLAGS += -mno-minimal-toc
> +diff --git a/libgcc/config/rs6000/fixtfdi.c b/libgcc/config/rs6000/fixtfdi.c
> +--- a/libgcc/config/rs6000/fixtfdi.c 1969-12-31 19:00:00.000000000 -0500
> ++++ b/libgcc/config/rs6000/fixtfdi.c 2018-12-12 17:54:50.110755540 -0500
> +@@ -0,0 +1,42 @@
> ++/* Software floating-point emulation.
> ++ Convert a to 64bit signed integer
> ++ Copyright (C) 1997-2016 Free Software Foundation, Inc.
> ++ This file is part of the GNU C Library.
> ++ Contributed by Richard Henderson (rth at cygnus.com) and
> ++ Jakub Jelinek (jj at ultra.linux.cz).
> ++
> ++ 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.
> ++
> ++ In addition to the permissions in the GNU Lesser General Public
> ++ License, the Free Software Foundation gives you unlimited
> ++ permission to link the compiled version of this file into
> ++ combinations with other programs, and to distribute those
> ++ combinations without any restriction coming from the use of this
> ++ file. (The Lesser General Public License restrictions do apply in
> ++ other respects; for example, they cover modification of the file,
> ++ and distribution when not linked into a combine executable.)
> ++
> ++ 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.
> ++
> ++ You should have received a copy of the GNU Lesser General Public
> ++ License along with the GNU C Library; if not, see
> ++ <http://www.gnu.org/licenses/>. */
> ++
> ++#ifdef _ARCH_PPC64
> ++#include "soft-fp.h"
> ++#include "quad-float128.h"
> ++
> ++DItype
> ++__fixtfdi (TFtype a)
> ++{
> ++ if (a < 0)
> ++ return - __fixunstfdi (-a);
> ++ return __fixunstfdi (a);
> ++}
> ++#endif
> +diff --git a/libgcc/config/rs6000/fixunstfdi.c b/libgcc/config/rs6000/fixunstfdi.c
> +--- a/libgcc/config/rs6000/fixunstfdi.c 1969-12-31 19:00:00.000000000 -0500
> ++++ b/libgcc/config/rs6000/fixunstfdi.c 2018-12-12 17:56:06.141654537 -0500
> +@@ -0,0 +1,58 @@
> ++/* Software floating-point emulation.
> ++ Convert a to 64bit unsigned integer
> ++ Copyright (C) 1997-2016 Free Software Foundation, Inc.
> ++ This file is part of the GNU C Library.
> ++ Contributed by Richard Henderson (rth at cygnus.com) and
> ++ Jakub Jelinek (jj at ultra.linux.cz).
> ++
> ++ 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.
> ++
> ++ In addition to the permissions in the GNU Lesser General Public
> ++ License, the Free Software Foundation gives you unlimited
> ++ permission to link the compiled version of this file into
> ++ combinations with other programs, and to distribute those
> ++ combinations without any restriction coming from the use of this
> ++ file. (The Lesser General Public License restrictions do apply in
> ++ other respects; for example, they cover modification of the file,
> ++ and distribution when not linked into a combine executable.)
> ++
> ++ 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.
> ++
> ++ You should have received a copy of the GNU Lesser General Public
> ++ License along with the GNU C Library; if not, see
> ++ <http://www.gnu.org/licenses/>. */
> ++
> ++#ifdef _ARCH_PPC64
> ++#include "soft-fp.h"
> ++#include "quad-float128.h"
> ++
> ++DItype
> ++__fixunstfdi (TFtype a)
> ++{
> ++ if (a < 0)
> ++ return 0;
> ++
> ++ /* Compute high word of result, as a flonum. */
> ++ const TFtype b = (a / (((UDItype) 1) << (sizeof (SItype) * 8)));
> ++ /* Convert that to fixed (but not to DItype!),
> ++ and shift it into the high word. */
> ++ UDItype v = (USItype) b;
> ++ v <<= (sizeof (SItype) * 8);
> ++ /* Remove high part from the TFtype, leaving the low part as flonum. */
> ++ a -= (TFtype) v;
> ++ /* Convert that to fixed (but not to DItype!) and add it in.
> ++ Sometimes A comes out negative. This is significant, since
> ++ A has more bits than a long int does. */
> ++ if (a < 0)
> ++ v -= (USItype) (-a);
> ++ else
> ++ v += (USItype) a;
> ++ return v;
> ++}
> ++#endif
> +diff --git a/libgcc/config/rs6000/floatditf.c b/libgcc/config/rs6000/floatditf.c
> +--- a/libgcc/config/rs6000/floatditf.c 1969-12-31 19:00:00.000000000 -0500
> ++++ b/libgcc/config/rs6000/floatditf.c 2018-12-12 17:57:55.852953553 -0500
> +@@ -0,0 +1,47 @@
> ++/* Software floating-point emulation.
> ++ Convert a 64bit signed integer to IEEE quad
> ++ Copyright (C) 1997-2016 Free Software Foundation, Inc.
> ++ This file is part of the GNU C Library.
> ++ Contributed by Richard Henderson (rth at cygnus.com) and
> ++ Jakub Jelinek (jj at ultra.linux.cz).
> ++
> ++ 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.
> ++
> ++ In addition to the permissions in the GNU Lesser General Public
> ++ License, the Free Software Foundation gives you unlimited
> ++ permission to link the compiled version of this file into
> ++ combinations with other programs, and to distribute those
> ++ combinations without any restriction coming from the use of this
> ++ file. (The Lesser General Public License restrictions do apply in
> ++ other respects; for example, they cover modification of the file,
> ++ and distribution when not linked into a combine executable.)
> ++
> ++ 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.
> ++
> ++ You should have received a copy of the GNU Lesser General Public
> ++ License along with the GNU C Library; if not, see
> ++ <http://www.gnu.org/licenses/>. */
> ++
> ++#ifdef _ARCH_PPC64
> ++#include "soft-fp.h"
> ++#include "double.h"
> ++#include "quad-float128.h"
> ++
> ++TFtype
> ++__floatditf (DItype u)
> ++{
> ++ DFtype dh, dl;
> ++
> ++ dh = (SItype) (u >> (sizeof (SItype) * 8));
> ++ dh *= 2.0 * (((UDItype) 1) << ((sizeof (SItype) * 8) - 1));
> ++ dl = (USItype) (u & ((((UDItype) 1) << (sizeof (SItype) * 8)) - 1));
> ++
> ++ return (TFtype) dh + (TFtype) dl;
> ++}
> ++#endif
> +diff --git a/libgcc/config/rs6000/floatunditf.c b/libgcc/config/rs6000/floatunditf.c
> +--- a/libgcc/config/rs6000/floatunditf.c 1969-12-31 19:00:00.000000000 -0500
> ++++ b/libgcc/config/rs6000/floatunditf.c 2018-12-12 17:57:15.262473574 -0500
> +@@ -0,0 +1,47 @@
> ++/* Software floating-point emulation.
> ++ Convert a 64bit unsigned integer to IEEE quad
> ++ Copyright (C) 1997-2016 Free Software Foundation, Inc.
> ++ This file is part of the GNU C Library.
> ++ Contributed by Richard Henderson (rth at cygnus.com) and
> ++ Jakub Jelinek (jj at ultra.linux.cz).
> ++
> ++ 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.
> ++
> ++ In addition to the permissions in the GNU Lesser General Public
> ++ License, the Free Software Foundation gives you unlimited
> ++ permission to link the compiled version of this file into
> ++ combinations with other programs, and to distribute those
> ++ combinations without any restriction coming from the use of this
> ++ file. (The Lesser General Public License restrictions do apply in
> ++ other respects; for example, they cover modification of the file,
> ++ and distribution when not linked into a combine executable.)
> ++
> ++ 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.
> ++
> ++ You should have received a copy of the GNU Lesser General Public
> ++ License along with the GNU C Library; if not, see
> ++ <http://www.gnu.org/licenses/>. */
> ++
> ++#ifdef _ARCH_PPC64
> ++#include "soft-fp.h"
> ++#include "double.h"
> ++#include "quad-float128.h"
> ++
> ++TFtype
> ++__floatunditf (UDItype u)
> ++{
> ++ DFtype dh, dl;
> ++
> ++ dh = (USItype) (u >> (sizeof (SItype) * 8));
> ++ dh *= 2.0 * (((UDItype) 1) << ((sizeof (SItype) * 8) - 1));
> ++ dl = (USItype) (u & ((((UDItype) 1) << (sizeof (SItype) * 8)) - 1));
> ++
> ++ return (TFtype) dh + (TFtype) dl;
> ++}
> ++#endif
> +diff --git a/libgcc/config/rs6000/ppc64-fp.c b/libgcc/config/rs6000/ppc64-fp.c
> +--- a/libgcc/config/rs6000/ppc64-fp.c 2018-12-12 17:53:49.540038500 -0500
> ++++ b/libgcc/config/rs6000/ppc64-fp.c 2018-12-12 17:49:51.897235314 -0500
> +@@ -25,34 +25,21 @@
> + <http://www.gnu.org/licenses/>. */
> +
> + #if defined(__powerpc64__) || defined (__64BIT__) || defined(__ppc64__)
> +-#define TMODES
> + #include "fp-bit.h"
> +
> +-extern DItype __fixtfdi (TFtype);
> + extern DItype __fixdfdi (DFtype);
> + extern DItype __fixsfdi (SFtype);
> + extern USItype __fixunsdfsi (DFtype);
> + extern USItype __fixunssfsi (SFtype);
> +-extern TFtype __floatditf (DItype);
> +-extern TFtype __floatunditf (UDItype);
> + extern DFtype __floatdidf (DItype);
> + extern DFtype __floatundidf (UDItype);
> + extern SFtype __floatdisf (DItype);
> + extern SFtype __floatundisf (UDItype);
> +-extern DItype __fixunstfdi (TFtype);
> +
> + static DItype local_fixunssfdi (SFtype);
> + static DItype local_fixunsdfdi (DFtype);
> +
> + DItype
> +-__fixtfdi (TFtype a)
> +-{
> +- if (a < 0)
> +- return - __fixunstfdi (-a);
> +- return __fixunstfdi (a);
> +-}
> +-
> +-DItype
> + __fixdfdi (DFtype a)
> + {
> + if (a < 0)
> +@@ -86,30 +73,6 @@
> + return (SItype) a;
> + }
> +
> +-TFtype
> +-__floatditf (DItype u)
> +-{
> +- DFtype dh, dl;
> +-
> +- dh = (SItype) (u >> (sizeof (SItype) * 8));
> +- dh *= 2.0 * (((UDItype) 1) << ((sizeof (SItype) * 8) - 1));
> +- dl = (USItype) (u & ((((UDItype) 1) << (sizeof (SItype) * 8)) - 1));
> +-
> +- return (TFtype) dh + (TFtype) dl;
> +-}
> +-
> +-TFtype
> +-__floatunditf (UDItype u)
> +-{
> +- DFtype dh, dl;
> +-
> +- dh = (USItype) (u >> (sizeof (SItype) * 8));
> +- dh *= 2.0 * (((UDItype) 1) << ((sizeof (SItype) * 8) - 1));
> +- dl = (USItype) (u & ((((UDItype) 1) << (sizeof (SItype) * 8)) - 1));
> +-
> +- return (TFtype) dh + (TFtype) dl;
> +-}
> +-
> + DFtype
> + __floatdidf (DItype u)
> + {
> +@@ -183,30 +146,6 @@
> + return (SFtype) f;
> + }
> +
> +-DItype
> +-__fixunstfdi (TFtype a)
> +-{
> +- if (a < 0)
> +- return 0;
> +-
> +- /* Compute high word of result, as a flonum. */
> +- const TFtype b = (a / (((UDItype) 1) << (sizeof (SItype) * 8)));
> +- /* Convert that to fixed (but not to DItype!),
> +- and shift it into the high word. */
> +- UDItype v = (USItype) b;
> +- v <<= (sizeof (SItype) * 8);
> +- /* Remove high part from the TFtype, leaving the low part as flonum. */
> +- a -= (TFtype) v;
> +- /* Convert that to fixed (but not to DItype!) and add it in.
> +- Sometimes A comes out negative. This is significant, since
> +- A has more bits than a long int does. */
> +- if (a < 0)
> +- v -= (USItype) (-a);
> +- else
> +- v += (USItype) a;
> +- return v;
> +-}
> +-
> + /* This version is needed to prevent recursion; fixunsdfdi in libgcc
> + calls fixdfdi, which in turn calls calls fixunsdfdi. */
> +
> +diff --git a/libgcc/config/rs6000/quad-float128.h b/libgcc/config/rs6000/quad-float128.h
> +--- a/libgcc/config/rs6000/quad-float128.h 2018-12-12 17:53:49.540038500 -0500
> ++++ b/libgcc/config/rs6000/quad-float128.h 2018-12-12 17:30:19.423468244 -0500
> +@@ -104,6 +104,11 @@
> + extern UTItype_ppc __fixunskfti (TFtype);
> + extern TFtype __floattikf (TItype_ppc);
> + extern TFtype __floatuntikf (UTItype_ppc);
> ++
> ++extern DItype_ppc __fixtfdi (TFtype);
> ++extern DItype_ppc __fixunstfdi (TFtype);
> ++extern TFtype __floatditf (DItype_ppc);
> ++extern TFtype __floatunditf (UDItype_ppc);
> + #endif
> +
> + /* Functions using the ISA 3.0 hardware support. If the code is compiled with
> +diff --git a/libgcc/config/rs6000/t-float128 b/libgcc/config/rs6000/t-float128
> +--- a/libgcc/config/rs6000/t-float128 2018-12-12 17:53:49.540038500 -0500
> ++++ b/libgcc/config/rs6000/t-float128 2018-12-12 17:45:12.233937136 -0500
> +@@ -24,6 +24,7 @@
> +
> + # New functions for software emulation
> + fp128_ppc_funcs = floattikf floatuntikf fixkfti fixunskfti \
> ++ floatditf floatunditf fixtfdi fixunstfdi \
> + extendkftf2-sw trunctfkf2-sw \
> + sfp-exceptions _mulkc3 _divkc3 _powikf2
> +
> +
> diff --git a/libgcc/configure b/libgcc/configure
> old mode 100644
> new mode 100755
> --
> 2.7.4
>
> --
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