gcc: More places to patch to disable ldbl 128 for musl on PPC

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).

(From OE-Core rev: dec8e566810525563b33c2877d10db0a70965d6d)

Signed-off-by: Serhey Popovych <serhe.popovych@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 341 insertions, 1 deletions

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 7a69ea2806..391cda71d7 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@cygnus.com) and
++                 Jakub Jelinek (jj@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@cygnus.com) and
++                 Jakub Jelinek (jj@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@cygnus.com) and
++                 Jakub Jelinek (jj@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@cygnus.com) and
++                 Jakub Jelinek (jj@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