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glibc/0010-Sw64-Build-Infrastructure.patch

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Sw64: Add Sw64 ISA support (cherry picked from commit 7c7ae25b26c3c937686ae3f686a768532b14ec36)
2024-12-16 14:02:35 -06:00
From bf639b376e38c144df5005a258f0bd2b9c72912f Mon Sep 17 00:00:00 2001
From: swcompiler <lc@wxiat.com>
Date: Fri, 29 Nov 2024 14:14:00 +0800
Subject: [PATCH 10/23] Sw64: Build Infrastructure
---
Makerules | 14 +++
configure | 23 ++++
elf/tst-glibcelf.py | 1 +
scripts/config.guess | 51 +++++++++
scripts/config.sub | 1 +
sysdeps/sw_64/Implies | 5 +
sysdeps/sw_64/Makefile | 70 ++++++++++++
sysdeps/sw_64/Subdirs | 1 +
sysdeps/sw_64/Versions | 23 ++++
sysdeps/sw_64/configure | 26 +++++
sysdeps/sw_64/configure.ac | 18 +++
sysdeps/sw_64/fpu/Versions | 23 ++++
sysdeps/sw_64/preconfigure | 3 +
sysdeps/sw_64/sw6a/Implies | 1 +
sysdeps/sw_64/sw6b/Implies | 1 +
sysdeps/sw_64/sw8a/Implies | 1 +
sysdeps/sw_64/sw8a/nptl/Makefile | 20 ++++
sysdeps/unix/sysv/linux/sw_64/Implies | 5 +
sysdeps/unix/sysv/linux/sw_64/Makefile | 36 ++++++
sysdeps/unix/sysv/linux/sw_64/Versions | 105 ++++++++++++++++++
sysdeps/unix/sysv/linux/sw_64/configure | 5 +
sysdeps/unix/sysv/linux/sw_64/configure.ac | 5 +
sysdeps/unix/sysv/linux/sw_64/fpu/Implies | 2 +
.../unix/sysv/linux/sw_64/sw6a/fpu/Implies | 2 +
.../unix/sysv/linux/sw_64/sw6b/fpu/Implies | 2 +
.../unix/sysv/linux/sw_64/sw8a/fpu/Implies | 2 +
26 files changed, 446 insertions(+)
create mode 100644 sysdeps/sw_64/Implies
create mode 100644 sysdeps/sw_64/Makefile
create mode 100644 sysdeps/sw_64/Subdirs
create mode 100644 sysdeps/sw_64/Versions
create mode 100644 sysdeps/sw_64/configure
create mode 100644 sysdeps/sw_64/configure.ac
create mode 100644 sysdeps/sw_64/fpu/Versions
create mode 100644 sysdeps/sw_64/preconfigure
create mode 100644 sysdeps/sw_64/sw6a/Implies
create mode 100644 sysdeps/sw_64/sw6b/Implies
create mode 100644 sysdeps/sw_64/sw8a/Implies
create mode 100644 sysdeps/sw_64/sw8a/nptl/Makefile
create mode 100644 sysdeps/unix/sysv/linux/sw_64/Implies
create mode 100644 sysdeps/unix/sysv/linux/sw_64/Makefile
create mode 100644 sysdeps/unix/sysv/linux/sw_64/Versions
create mode 100644 sysdeps/unix/sysv/linux/sw_64/configure
create mode 100644 sysdeps/unix/sysv/linux/sw_64/configure.ac
create mode 100644 sysdeps/unix/sysv/linux/sw_64/fpu/Implies
create mode 100644 sysdeps/unix/sysv/linux/sw_64/sw6a/fpu/Implies
create mode 100644 sysdeps/unix/sysv/linux/sw_64/sw6b/fpu/Implies
create mode 100644 sysdeps/unix/sysv/linux/sw_64/sw8a/fpu/Implies
diff --git a/Makerules b/Makerules
index 018780c8..0c37f567 100644
--- a/Makerules
+++ b/Makerules
@@ -981,6 +981,20 @@ ifdef libc.so-version
$(inst_slibdir)/libc.so$(libc.so-version): $(common-objpfx)libc.so $(+force)
$(do-install-program)
+ifeq ($(config-machine),sw_64)
+ echo 'libc.so-version $(libc.so-version)'
+ifeq ($(libc.so-version), .6)
+ ln -sf libc.so.6 $(inst_slibdir)/libc.so.6.1
+ ln -sf libm.so.6 $(inst_slibdir)/libm.so.6.1
+ ln -sf libBrokenLocale.so.1 $(inst_slibdir)/libBrokenLocale.so.1.1
+ ln -sf libdl.so.2 $(inst_slibdir)/libdl.so.2.1
+ ln -sf libnsl.so.1 $(inst_slibdir)/libnsl.so.1.1
+ ln -sf libresolv.so.2 $(inst_slibdir)/libresolv.so.2.1
+ ln -sf libutil.so.1 $(inst_slibdir)/libutil.so.1.1
+endif
+endif
+
+
install: $(inst_slibdir)/libc.so$(libc.so-version)
# This fragment of linker script gives the OUTPUT_FORMAT statement
diff --git a/configure b/configure
index 4ef38714..9d8737ca 100755
--- a/configure
+++ b/configure
@@ -2966,6 +2966,28 @@ host_os=$*
IFS=$ac_save_IFS
case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
+#sw_64 start
+if test $host_cpu != ""; then
+ march=$with_cpu
+ if test $march = "sw8a"; then
+ echo "sw_64/$march/nptl
+ unix/sysv/linux/wordsize-64
+ ieee754/ldbl-64-128
+ ieee754/ldbl-opt
+ sw_64/$march
+ " >$srcdir/sysdeps/unix/sysv/linux/sw_64/Implies
+ else
+ echo "sw_64/nptl
+ unix/sysv/linux/wordsize-64
+ ieee754/ldbl-64-128
+ ieee754/ldbl-opt
+ sw_64/$march
+ " >$srcdir/sysdeps/unix/sysv/linux/sw_64/Implies
+ fi
+else
+ as_fn_error $? "you must specified a host cpu name"
+ fi
+ #sw_64 end
@@ -6362,6 +6384,7 @@ fi
if test -z "$machine_used" && test "$machine" != none; then
as_fn_error $? "The $machine is not supported." "$LINENO" 5
fi
+submachine_used=$with_cpu
if test -z "$submachine_used" && test -n "$submachine"; then
as_fn_error $? "The $submachine subspecies of $host_cpu is not supported." "$LINENO" 5
fi
diff --git a/elf/tst-glibcelf.py b/elf/tst-glibcelf.py
index 6142ca28..f078e78c 100644
--- a/elf/tst-glibcelf.py
+++ b/elf/tst-glibcelf.py
@@ -170,6 +170,7 @@ DT_ADDRNUM
DT_ADDRRNGHI
DT_ADDRRNGLO
DT_ALPHA_NUM
+DT_SW_64_NUM
DT_ENCODING
DT_EXTRANUM
DT_HIOS
diff --git a/scripts/config.guess b/scripts/config.guess
index 1817bdce..93babc45 100755
--- a/scripts/config.guess
+++ b/scripts/config.guess
@@ -369,6 +369,41 @@ case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
OSF_REL=`echo "$UNAME_RELEASE" | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`
GUESS=$UNAME_MACHINE-dec-osf$OSF_REL
;;
+ sw_64:OSF1:*:*)
+ case $UNAME_RELEASE in
+ *4.0)
+ UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
+ ;;
+ *5.*)
+ UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
+ ;;
+ esac
+ # According to Compaq, /usr/sbin/psrinfo has been available on
+ # OSF/1 and Tru64 systems produced since 1995. I hope that
+ # covers most systems running today. This code pipes the CPU
+ # types through head -n 1, so we only detect the type of CPU 0.
+ SW_64_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^ The sw_64 \(.*\) processor.*$/\1/p' | head -n 1`
+ case "$SW_64_CPU_TYPE" in
+ "SW6A (21264)")
+ UNAME_MACHINE=sw_64sw6a ;;
+ "SW6B (21264)")
+ UNAME_MACHINE=sw_64sw6b ;;
+ "SW8A (21264)")
+ UNAME_MACHINE=sw_64sw8a ;;
+ esac
+ # A Pn.n version is a patched version.
+ # A Vn.n version is a released version.
+ # A Tn.n version is a released field test version.
+ # A Xn.n version is an unreleased experimental baselevel.
+ # 1.2 uses "1.2" for uname -r.
+ echo "$UNAME_MACHINE"-dec-osf"`echo "$UNAME_RELEASE" | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`"
+ # Reset EXIT trap before exiting to avoid spurious non-zero exit code.
+ exitcode=$?
+ trap '' 0
+ exit $exitcode ;;
+
+
+
Amiga*:UNIX_System_V:4.0:*)
GUESS=m68k-unknown-sysv4
;;
@@ -993,6 +1028,21 @@ EOF
arc:Linux:*:* | arceb:Linux:*:* | arc32:Linux:*:* | arc64:Linux:*:*)
GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
;;
+ sw_64:Linux:*:*)
+ case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
+ SW6A) UNAME_MACHINE=sw_64sw6a ;;
+ SW6B) UNAME_MACHINE=sw_64sw6b ;;
+ SW8A) UNAME_MACHINE=sw_64sw8a ;;
+ SW6f) UNAME_MACHINE=sw_64sw6f ;;
+ sw) UNAME_MACHINE=sw_64 ;;
+ esac
+ objdump --private-headers /bin/sh | grep -q ld.so.1
+ if test "$?" = 0 ; then LIBC=gnulibc1 ; fi
+ echo "$UNAME_MACHINE"-sunway-linux-"$LIBC"
+ exit ;;
+ arc:Linux:*:* | arceb:Linux:*:*)
+ echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+ exit ;;
arm*:Linux:*:*)
set_cc_for_build
if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
@@ -1526,6 +1576,7 @@ EOF
UNAME_MACHINE=`(uname -p) 2>/dev/null`
case $UNAME_MACHINE in
A*) GUESS=alpha-dec-vms ;;
+ S*) GUESS=sw_64-dec-vms ;;
I*) GUESS=ia64-dec-vms ;;
V*) GUESS=vax-dec-vms ;;
esac ;;
diff --git a/scripts/config.sub b/scripts/config.sub
index dba16e84..cf662465 100755
--- a/scripts/config.sub
+++ b/scripts/config.sub
@@ -1267,6 +1267,7 @@ case $cpu-$vendor in
| sparclite \
| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
| spu \
+ | sw_64 | sw_64sw6a | sw_64sw8a \
| tahoe \
| thumbv7* \
| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
diff --git a/sysdeps/sw_64/Implies b/sysdeps/sw_64/Implies
new file mode 100644
index 00000000..f1566581
--- /dev/null
+++ b/sysdeps/sw_64/Implies
@@ -0,0 +1,5 @@
+wordsize-64
+# Sw_64 uses IEEE 754 single, double and quad precision floating point.
+ieee754/ldbl-128
+ieee754/dbl-64
+ieee754/flt-32
diff --git a/sysdeps/sw_64/Makefile b/sysdeps/sw_64/Makefile
new file mode 100644
index 00000000..71e10ed1
--- /dev/null
+++ b/sysdeps/sw_64/Makefile
@@ -0,0 +1,70 @@
+# Copyright (C) 1993-2023 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+# Contributed by Brendan Kehoe (brendan@zen.org).
+
+# 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.
+
+# 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
+# <https://www.gnu.org/licenses/>.
+
+ifeq ($(subdir),db2)
+CPPFLAGS += -DHAVE_SPINLOCKS=1 -DHAVE_ASSEM_SW_64=1
+endif
+
+ifeq ($(subdir),debug)
+# Consider making this GCC's default...
+CFLAGS-backtrace.c = -fasynchronous-unwind-tables
+endif
+
+ifeq ($(subdir),gmon)
+sysdep_routines += _mcount
+endif
+
+ifeq ($(subdir),gnulib)
+sysdep_routines += divl divlu divq divqu reml remlu remq remqu
+endif
+
+ifeq ($(subdir),string)
+sysdep_routines += stxcpy stxncpy
+endif
+
+ifeq ($(subdir),elf)
+# The ld.so startup code cannot use literals until it self-relocates.
+CFLAGS-rtld.c = -mbuild-constants
+endif
+
+ifeq ($(subdir),math)
+# The fma routines rely on inexact being raised for correct results.
+CFLAGS-s_fma.c = -mieee-with-inexact
+CFLAGS-s_fmaf.c = -mieee-with-inexact
+# This test tries to check for inexact being raised by arithmetic.
+CFLAGS-test-misc.c += -mieee-with-inexact
+# Avoid "conflicting types for built-in function" warnings
+CFLAGS-s_isnan.c += -fno-builtin-isnanf
+endif
+
+# Build everything with full IEEE math support, and with dynamic rounding;
+# there are a number of math routines that are defined to work with the
+# "current" rounding mode, and it's easiest to set this with all of them.
+sysdep-CFLAGS += -mieee -mfp-rounding-mode=d
+
+# Software floating-point emulation.
+
+ifeq ($(subdir),soft-fp)
+sysdep_routines += ots_add ots_sub ots_mul ots_div ots_cmp ots_cmpe \
+ ots_cvtxq ots_cvtqx ots_cvtqux ots_cvttx ots_cvtxt ots_nintxq \
+ fraiseexcpt
+endif
+
+ifeq ($(subdir),math)
+CPPFLAGS += -I../soft-fp
+endif
diff --git a/sysdeps/sw_64/Subdirs b/sysdeps/sw_64/Subdirs
new file mode 100644
index 00000000..87eadf30
--- /dev/null
+++ b/sysdeps/sw_64/Subdirs
@@ -0,0 +1 @@
+soft-fp
diff --git a/sysdeps/sw_64/Versions b/sysdeps/sw_64/Versions
new file mode 100644
index 00000000..85ac8e80
--- /dev/null
+++ b/sysdeps/sw_64/Versions
@@ -0,0 +1,23 @@
+libc {
+ GLIBC_2.0 {
+ # functions with special/multiple interfaces
+ __divlu; __remlu; __divls; __remls; __divwu; __remwu; __divws;
+ __remws; __divw; __remw; __divl; __reml; __divlu; __remlu;
+ }
+ GLIBC_2.3.4 {
+ _OtsAddX; _OtsSubX; _OtsMulX; _OtsDivX;
+ _OtsEqlX; _OtsNeqX; _OtsLssX; _OtsLeqX; _OtsGtrX; _OtsGeqX;
+ _OtsCvtQX; _OtsCvtQUX; _OtsCvtXQ; _OtsNintXQ;
+ _OtsConvertFloatTX; _OtsConvertFloatXT;
+ }
+}
+libm {
+ GLIBC_2.0 {
+ # used in inline functions.
+ __atan2;
+ }
+ GLIBC_2.18 {
+ # forgotten when the symbols were added to glibc 2.15 for other targets
+ __sqrt_finite; __sqrtf_finite; __sqrtl_finite;
+ }
+}
diff --git a/sysdeps/sw_64/configure b/sysdeps/sw_64/configure
new file mode 100644
index 00000000..3f78f570
--- /dev/null
+++ b/sysdeps/sw_64/configure
@@ -0,0 +1,26 @@
+# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
+ # Local configure fragment for sysdeps/sw_64.
+
+# With required gcc+binutils, we can always access static and hidden
+# symbols in a position independent way.
+printf "%s\n" "#define PIE_UNSUPPORTED 1" >>confdefs.h
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sw64 libc new version" >&5
+$as_echo_n "checking for sw64 libc new version... " >&6; }
+if ${libc_cv_sw64_newver+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+
+ if test $with_cpu = "sw8a"; then
+ libc_cv_sw64_newver=yes
+ else
+ libc_cv_sw64_newver=no
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_sw64_newver" >&5
+$as_echo "$libc_cv_sw64_newver" >&6; }
+if test $libc_cv_sw64_newver = yes; then
+ $as_echo "#define HAVE_SW64_NEW_LIBCVERSION 1" >>confdefs.h
+
+fi
+# work around problem with autoconf and empty lines at the end of files
diff --git a/sysdeps/sw_64/configure.ac b/sysdeps/sw_64/configure.ac
new file mode 100644
index 00000000..285ae696
--- /dev/null
+++ b/sysdeps/sw_64/configure.ac
@@ -0,0 +1,18 @@
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/sw_64.
+
+# With required gcc+binutils, we can always access static and hidden
+# symbols in a position independent way.
+AC_DEFINE(PI_STATIC_AND_HIDDEN)
+
+AC_CACHE_CHECK([for sw64 libc new version],
+ [libc_cv_sw64_newver],[
+ if test $with_cpu = "sw8a"; then
+ libc_cv_sw64_newver=yes
+ else
+ libc_cv_sw64_newver=no
+ fi])
+if test $libc_cv_sw64_newver = yes; then
+ AC_DEFINE(HAVE_SW64_NEW_LIBCVERSION)
+fi
+# work around problem with autoconf and empty lines at the end of files
diff --git a/sysdeps/sw_64/fpu/Versions b/sysdeps/sw_64/fpu/Versions
new file mode 100644
index 00000000..c9b0e03a
--- /dev/null
+++ b/sysdeps/sw_64/fpu/Versions
@@ -0,0 +1,23 @@
+libc {
+ GLIBC_2.0 {
+ # functions used in other libraries
+ __ieee_get_fp_control; __ieee_set_fp_control;
+ }
+}
+libm {
+ GLIBC_2.3.4 {
+ # functions implementing old complex float abi
+ __c1_cabsf; __c1_cacosf; __c1_cacoshf; __c1_cargf; __c1_casinf;
+ __c1_casinhf; __c1_catanf; __c1_catanhf; __c1_ccosf; __c1_ccoshf;
+ __c1_cexpf; __c1_cimagf; __c1_clog10f; __c1_clogf; __c1_conjf;
+ __c1_cpowf; __c1_cprojf; __c1_crealf; __c1_csinf; __c1_csinhf;
+ __c1_csqrtf; __c1_ctanf; __c1_ctanhf;
+
+ # functions implementing new complex float abi
+ cabsf; cacosf; cacoshf; cargf; casinf;
+ casinhf; catanf; catanhf; ccosf; ccoshf;
+ cexpf; cimagf; clog10f; clogf; conjf;
+ cpowf; cprojf; crealf; csinf; csinhf;
+ csqrtf; ctanf; ctanhf;
+ }
+}
diff --git a/sysdeps/sw_64/preconfigure b/sysdeps/sw_64/preconfigure
new file mode 100644
index 00000000..62b74ab5
--- /dev/null
+++ b/sysdeps/sw_64/preconfigure
@@ -0,0 +1,3 @@
+case "$machine" in
+sw_64*) base_machine=sw_64 machine=sw_64/$machine
+esac
diff --git a/sysdeps/sw_64/sw6a/Implies b/sysdeps/sw_64/sw6a/Implies
new file mode 100644
index 00000000..b34962bb
--- /dev/null
+++ b/sysdeps/sw_64/sw6a/Implies
@@ -0,0 +1 @@
+sw_64/sw6a
diff --git a/sysdeps/sw_64/sw6b/Implies b/sysdeps/sw_64/sw6b/Implies
new file mode 100644
index 00000000..cc08aefa
--- /dev/null
+++ b/sysdeps/sw_64/sw6b/Implies
@@ -0,0 +1 @@
+sw_64/sw6b
diff --git a/sysdeps/sw_64/sw8a/Implies b/sysdeps/sw_64/sw8a/Implies
new file mode 100644
index 00000000..4192bd22
--- /dev/null
+++ b/sysdeps/sw_64/sw8a/Implies
@@ -0,0 +1 @@
+sw_64/sw8a
diff --git a/sysdeps/sw_64/sw8a/nptl/Makefile b/sysdeps/sw_64/sw8a/nptl/Makefile
new file mode 100644
index 00000000..6b60d20f
--- /dev/null
+++ b/sysdeps/sw_64/sw8a/nptl/Makefile
@@ -0,0 +1,20 @@
+# Copyright (C) 2003-2023 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+#
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library. If not, see
+# <http://www.gnu.org/licenses/>.
+
+ifeq ($(subdir),csu)
+gen-as-const-headers += tcb-offsets.sym
+endif
diff --git a/sysdeps/unix/sysv/linux/sw_64/Implies b/sysdeps/unix/sysv/linux/sw_64/Implies
new file mode 100644
index 00000000..bc5e8080
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sw_64/Implies
@@ -0,0 +1,5 @@
+sw_64/nptl
+ unix/sysv/linux/wordsize-64
+ ieee754/ldbl-64-128
+ ieee754/ldbl-opt
+ sw_64/
diff --git a/sysdeps/unix/sysv/linux/sw_64/Makefile b/sysdeps/unix/sysv/linux/sw_64/Makefile
new file mode 100644
index 00000000..f18a7692
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sw_64/Makefile
@@ -0,0 +1,36 @@
+ifeq ($(subdir),stdlib)
+gen-as-const-headers += ucontext-offsets.sym
+endif
+
+ifeq ($(subdir),misc)
+sysdep_headers += sw_64/ptrace.h sw_64/regdef.h sys/io.h
+
+sysdep_routines += ieee_get_fp_control ieee_set_fp_control \
+ ioperm
+
+# Support old timeval32 entry points
+sysdep_routines += osf_adjtime osf_gettimeofday osf_settimeofday \
+ osf_getitimer osf_setitimer osf_utimes \
+ osf_getrusage osf_wait4
+
+CFLAGS-ioperm.c = -Wa,-msw6a
+endif
+
+ifeq ($(subdir),signal)
+sysdep_routines += rt_sigaction
+endif
+
+ifeq ($(subdir),math)
+# These 2 routines are normally in libgcc{.a,_s.so.1}.
+# However, sw_64 -mlong-double-128 libgcc relies on
+# glibc providing _Ots* routines and without these files
+# glibc relies on __multc3/__divtc3 only provided
+# by libgcc if configured with -mlong-double-128.
+# Provide these routines here as well.
+libm-routines += multc3 divtc3
+endif # math
+
+ifeq ($(subdir),conform)
+# For bug 21260.
+conformtest-xfail-conds += sw_64-linux
+endif
diff --git a/sysdeps/unix/sysv/linux/sw_64/Versions b/sysdeps/unix/sysv/linux/sw_64/Versions
new file mode 100644
index 00000000..050a8d0e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sw_64/Versions
@@ -0,0 +1,105 @@
+libc {
+ GLIBC_2.0 {
+ _sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
+
+ # Unfortunately in wider use.
+ _inb; _inw; _inl; _outb; _outw; _outl; _bus_base; _bus_base_sparse;
+ _hae_shift;
+
+ # Exception handling support functions from libgcc
+ __register_frame; __register_frame_table; __deregister_frame;
+ __frame_state_for; __register_frame_info_table;
+
+ # b*
+ bus_base; bus_base_sparse;
+
+ # h*
+ hae_shift;
+
+ # i*
+ inb; inl; inw; ioperm; iopl;
+
+ # o*
+ outb; outl; outw;
+
+ # p*
+ pciconfig_read; pciconfig_write; sethae;
+ }
+ GLIBC_2.1 {
+ _sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
+
+ # Linux/Sw_64 64-bit timeval functions.
+ __select; select;
+ adjtime; adjtimex; __adjtimex;
+ __gettimeofday;
+
+ # glob interface change
+ glob; globfree;
+
+ # limit type change
+ getrusage;
+
+ # time type change
+ gettimeofday; getitimer;
+
+ # i*
+ ieee_get_fp_control; ieee_set_fp_control;
+
+ # s*
+ setitimer; settimeofday;
+
+ # u*
+ utimes;
+
+ # w*
+ wait4;
+ }
+ GLIBC_2.1.4 {
+ pciconfig_iobase;
+ }
+ GLIBC_2.2.2 {
+ # w*
+ wordexp;
+ }
+ GLIBC_2.3 {
+ _sys_errlist;
+ _sys_nerr;
+ aio_cancel64;
+ aio_cancel;
+ sys_errlist;
+ sys_nerr;
+ }
+ GLIBC_2.3.3 {
+ # Changed PTHREAD_STACK_MIN.
+ pthread_attr_setstack;
+ pthread_attr_setstacksize;
+ }
+ GLIBC_2.4 {
+ _sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
+ }
+ GLIBC_2.12 {
+ _sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
+ }
+ GLIBC_2.16 {
+ _sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
+ }
+ GLIBC_2.27 {
+ getrlimit; setrlimit; getrlimit64; setrlimit64;
+ }
+ GLIBC_2.34 {
+ aio_cancel64;
+ }
+ GLIBC_PRIVATE {
+ __libc_sw_64_cache_shape;
+ }
+}
+ld {
+ GLIBC_PRIVATE {
+ __libc_sw_64_cache_shape;
+ }
+}
+librt {
+ GLIBC_2.3 {
+ __librt_version_placeholder;
+ }
+}
diff --git a/sysdeps/unix/sysv/linux/sw_64/configure b/sysdeps/unix/sysv/linux/sw_64/configure
new file mode 100644
index 00000000..a8d00a78
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sw_64/configure
@@ -0,0 +1,5 @@
+# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
+ # Local configure fragment for sysdeps/unix/sysv/linux/sw_64
+
+# We did historically export the unwinder from glibc.
+libc_cv_gcc_unwind_find_fde=yes
diff --git a/sysdeps/unix/sysv/linux/sw_64/configure.ac b/sysdeps/unix/sysv/linux/sw_64/configure.ac
new file mode 100644
index 00000000..d837c72e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sw_64/configure.ac
@@ -0,0 +1,5 @@
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/unix/sysv/linux/sw_64
+
+# We did historically export the unwinder from glibc.
+libc_cv_gcc_unwind_find_fde=yes
diff --git a/sysdeps/unix/sysv/linux/sw_64/fpu/Implies b/sysdeps/unix/sysv/linux/sw_64/fpu/Implies
new file mode 100644
index 00000000..7fda688c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sw_64/fpu/Implies
@@ -0,0 +1,2 @@
+# Override ldbl-opt with sw_64 specific routines.
+sw_64/fpu
diff --git a/sysdeps/unix/sysv/linux/sw_64/sw6a/fpu/Implies b/sysdeps/unix/sysv/linux/sw_64/sw6a/fpu/Implies
new file mode 100644
index 00000000..ac8c23c4
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sw_64/sw6a/fpu/Implies
@@ -0,0 +1,2 @@
+# Override ldbl-opt with sw_64 specific routines.
+sw_64/sw6a/fpu
diff --git a/sysdeps/unix/sysv/linux/sw_64/sw6b/fpu/Implies b/sysdeps/unix/sysv/linux/sw_64/sw6b/fpu/Implies
new file mode 100644
index 00000000..f50c6641
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sw_64/sw6b/fpu/Implies
@@ -0,0 +1,2 @@
+# Override ldbl-opt with sw_64 specific routines.
+sw_64/sw6b/fpu
diff --git a/sysdeps/unix/sysv/linux/sw_64/sw8a/fpu/Implies b/sysdeps/unix/sysv/linux/sw_64/sw8a/fpu/Implies
new file mode 100644
index 00000000..e042578c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sw_64/sw8a/fpu/Implies
@@ -0,0 +1,2 @@
+# Override ldbl-opt with sw_64 specific routines.
+sw_64/sw8a/fpu
--
2.25.1
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