glibc/sysdeps/unix/sysv/linux/x86_64/x32
Joseph Myers c86ed71d63 Add float128 support for x86_64, x86.
This patch enables float128 support for x86_64 and x86.  All GCC
versions that can build glibc provide the required support, but since
GCC 6 and before don't provide __builtin_nanq / __builtin_nansq, sNaN
tests and some tests of NaN payloads need to be disabled with such
compilers (this does not affect the generated glibc binaries at all,
just the tests).  bits/floatn.h declares float128 support to be
available for GCC versions that provide the required libgcc support
(4.3 for x86_64, 4.4 for i386 GNU/Linux, 4.5 for i386 GNU/Hurd);
compilation-only support was present some time before then, but not
really useful without the libgcc functions.

fenv_private.h needed updating to avoid trying to put _Float128 values
in registers.  I make no assertion of optimality of the
math_opt_barrier / math_force_eval definitions for this case; they are
simply intended to be sufficient to work correctly.

Tested for x86_64 and x86, with GCC 7 and GCC 6.  (Testing for x32 was
compilation tests only with build-many-glibcs.py to verify the ABI
baseline updates.  I have not done any testing for Hurd, although the
float128 support is enabled there as for GNU/Linux.)

	* sysdeps/i386/Implies: Add ieee754/float128.
	* sysdeps/x86_64/Implies: Likewise.
	* sysdeps/x86/bits/floatn.h: New file.
	* sysdeps/x86/float128-abi.h: Likewise.
	* manual/math.texi (Mathematics): Document support for _Float128
	on x86_64 and x86.
	* sysdeps/i386/fpu/fenv_private.h: Include <bits/floatn.h>.
	(math_opt_barrier): Do not put _Float128 values in floating-point
	registers.
	(math_force_eval): Likewise.
	[__x86_64__] (SET_RESTORE_ROUNDF128): New macro.
	* sysdeps/x86/fpu/Makefile [$(subdir) = math] (CPPFLAGS): Append
	to Makefile variable.
	* sysdeps/x86/fpu/e_sqrtf128.c: New file.
	* sysdeps/x86/fpu/sfp-machine.h: Likewise.  Based on libgcc.
	* sysdeps/x86/math-tests.h: New file.
	* math/libm-test-support.h (XFAIL_FLOAT128_PAYLOAD): New macro.
	* math/libm-test-getpayload.inc (getpayload_test_data): Use
	XFAIL_FLOAT128_PAYLOAD.
	* math/libm-test-setpayload.inc (setpayload_test_data): Likewise.
	* math/libm-test-totalorder.inc (totalorder_test_data): Likewise.
	* math/libm-test-totalordermag.inc (totalordermag_test_data):
	Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist: Update.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Likewise.
	* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2017-06-26 22:02:24 +00:00
..
arch_prctl.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
c++-types.data
configure
configure.ac
dl-cache.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
fts64.c
fts.c
ftw64.c
ftw.c
getcpu.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
glob.c
Implies
ld.abilist ld.so: Remove __libc_memalign 2016-11-30 16:23:58 +01:00
libanl.abilist
libBrokenLocale.abilist
libc.abilist Add float128 support for x86_64, x86. 2017-06-26 22:02:24 +00:00
libcrypt.abilist
libdl.abilist
libm.abilist Add float128 support for x86_64, x86. 2017-06-26 22:02:24 +00:00
libnsl.abilist
libpthread.abilist
libresolv.abilist
librt.abilist
libthread_db.abilist
libutil.abilist
llseek.S
lseek64.S Consolidate lseek/lseek64/llseek implementations 2016-11-08 16:04:33 -02:00
lseek.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Makefile conformtest: Add x32 XFAILs for mq_attr element types (bug 21279). 2017-03-20 21:30:28 +00:00
shlib-versions
syscalls.list
sysctl.mk
sysdep.h x86-64: Update LO_HI_LONG for p{readv,writev}{64}v2 2017-06-05 07:21:57 -07:00
times.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00