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360 Commits

Author SHA1 Message Date
Adhemerval Zanella
eb76e5b465 nptl: Reinstate pthread_timedjoin_np as a cancellation point (BZ#24215) 
Patch ce7eb0e903 ("nptl: Cleanup cancellation macros") changed the
join sequence for internal common __pthread_timedjoin_ex to use the
new macro lll_wait_tid.  The idea was this macro would issue the
cancellable futex operation depending whether the timeout is used or
not.  However if a timeout is used, __lll_timedwait_tid is called and
it is not a cancellable entrypoint.

This patch fixes it by simplifying the code in various ways:

  - Instead of adding the cancellation handling on __lll_timedwait_tid,
    it moves the generic implementation to pthread_join_common.c (called
    now timedwait_tid with some fixes to use the correct type for pid).

  - The llvm_wait_tid macro is removed, along with its replication on
    x86_64, i686, and sparc arch-specific lowlevellock.h.

  - sparc32 __lll_timedwait_tid is also removed, since the code is similar
    to generic one.

  - x86_64 and i386 provides arch-specific __lll_timedwait_tid which is
    also removed since they are similar in functionality to generic C code
    and there is no indication it is better than compiler generated code.

New tests, tst-join8 and tst-join9, are provided to check if
pthread_timedjoin_np acts as a cancellation point.

Checked on x86_64-linux-gnu, i686-linux-gnu, sparcv9-linux-gnu, and
aarch64-linux-gnu.

	[BZ #24215]
	* nptl/Makefile (lpthread-routines): Remove lll_timedwait_tid.
	(tests): Add tst-join8 tst-join9.
	* nptl/lll_timedwait_tid.c: Remove file.
	* sysdeps/sparc/sparc32/lll_timedwait_tid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/lll_timedwait_tid.c: Likewise.
	* sysdeps/sysv/linux/x86_64/lll_timedwait_tid.c: Likewise.
	* nptl/pthread_join_common.c (timedwait_tid): New function.
	(__pthread_timedjoin_ex): Act as cancellation entrypoint is block
	is set.
	* nptl/tst-join5.c (thread_join): New function.
	(tf1, tf2, do_test): Use libsupport and add pthread_timedjoin_np
	check.
	* nptl/tst-join8.c: New file.
	* nptl/tst-join9.c: Likewise.
	* sysdeps/nptl/lowlevellock-futex.h (lll_futex_wait_cancel,
	lll_futex_timed_wait_cancel): Add generic macros.
	* sysdeps/nptl/lowlevellock.h (__lll_timedwait_tid, lll_wait_tid):
	Remove definitions.
	* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise.
	* sysdeps/sparc/sparc32/lowlevellock.c (__lll_timedwait_tid):
	Remove function.
	* sysdeps/unix/sysv/linux/i386/lowlevellock.S (__lll_timedwait_tid):
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/lowlevellock-futex.h
	(lll_futex_timed_wait_cancel): New macro.
 2019-02-14 18:11:15 -02:00
H.J. Lu
69da3c9e87 soft-fp: Properly check _FP_W_TYPE_SIZE [BZ #24066] 
quad.h have

 #if _FP_W_TYPE_SIZE < 64

union _FP_UNION_Q
{
  Use 4 _FP_W_TYPEs
}

 #else

union _FP_UNION_Q
{
  Use 2 _FP_W_TYPEs
}

 #endif

Replace

 #if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q

with

 #if _FP_W_TYPE_SIZE < 64

to check whether 4 or 2 _FP_W_TYPEs are used for IEEE quad precision.
Tested with build-many-glibcs.py.

	[BZ #24066]
	* soft-fp/extenddftf2.c: Use "_FP_W_TYPE_SIZE < 64" to check if
	4_FP_W_TYPEs are used for IEEE quad precision.
	* soft-fp/extendhftf2.c: Likewise.
	* soft-fp/extendsftf2.c: Likewise.
	* soft-fp/extendxftf2.c: Likewise.
	* soft-fp/trunctfdf2.c: Likewise.
	* soft-fp/trunctfhf2.c: Likewise.
	* soft-fp/trunctfsf2.c: Likewise.
	* soft-fp/trunctfxf2.c: Likewise.
	* sysdeps/alpha/ots_cvttx.c: Likewise.
	* sysdeps/alpha/ots_cvtxt.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_daddl.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_ddivl.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_dmull.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_dsubl.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_faddl.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_fdivl.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_fmull.c: Likewise.
	* sysdeps/ieee754/soft-fp/s_fsubl.c: Likewise.
	* sysdeps/sparc/sparc32/q_dtoq.c: Likewise.
	* sysdeps/sparc/sparc32/q_qtod.c: Likewise.
	* sysdeps/sparc/sparc32/q_qtos.c: Likewise.
	* sysdeps/sparc/sparc32/q_stoq.c: Likewise.
	* sysdeps/sparc/sparc64/qp_dtoq.c: Likewise.
	* sysdeps/sparc/sparc64/qp_qtod.c: Likewise.
	* sysdeps/sparc/sparc64/qp_qtos.c: Likewise.
	* sysdeps/sparc/sparc64/qp_stoq.c: Likewise.
 2019-01-07 09:04:39 -08:00
Joseph Myers
04277e02d7 Update copyright dates with scripts/update-copyrights. 
* All files with FSF copyright notices: Update copyright dates
	using scripts/update-copyrights.
	* locale/programs/charmap-kw.h: Regenerated.
	* locale/programs/locfile-kw.h: Likewise.
 2019-01-01 00:11:28 +00:00
Joseph Myers
81dca813cc Use copysign functions not __copysign functions in glibc libm. 
Continuing the move to use, within libm, public names for libm
functions that can be inlined as built-in functions on many
architectures, this patch moves calls to __copysign functions to call
the corresponding copysign names instead, with asm redirection to
__copysign when the calls are not inlined (all cases are inlined
except for IBM long double for powerpc soft-float / e500v1).  This
eliminates the need for an inline function defining __copysign in
terms of __builtin_copysign.

Tested for x86_64, and with build-many-glibcs.py.

	* include/math.h [!_ISOMAC && !(__FINITE_MATH_ONLY__ &&
	__FINITE_MATH_ONLY__ > 0) && !NO_MATH_REDIRECT]
	(MATH_REDIRECT_BINARY_ARGS): New macro.
	[!_ISOMAC && !(__FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__ > 0)
	&& !NO_MATH_REDIRECT] (copysign): Redirect using MATH_REDIRECT.
	* sysdeps/alpha/fpu/s_copysign.c: Define NO_MATH_REDIRECT before
	header inclusion.
	* sysdeps/alpha/fpu/s_copysignf.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_copysign.c: Likewise.
	* sysdeps/ieee754/float128/s_copysignf128.c: Likewise.
	* sysdeps/ieee754/flt-32/s_copysignf.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_copysignl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_copysignl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_copysignl.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysign.c:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysignf.c:
	Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysignf.c: Likewise.
	* sysdeps/riscv/rvd/s_copysign.c: Likewise.
	* sysdeps/riscv/rvf/s_copysignf.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysign.c:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysignf.c:
	Likewise.
	* sysdeps/generic/math_private_calls.h
	[!__MATH_DECLARING_LONG_DOUBLE || !NO_LONG_DOUBLE] (__copysign):
	Do not declare and define as an inline function.
	* math/divtc3.c (__divtc3): Use copysign functions instead of
	__copysign variants.
	* math/multc3.c (__multc3): Likewise.
	* sysdeps/generic/math-type-macros.h (M_COPYSIGN): Likewise.
	* sysdeps/ieee754/dbl-64/e_atan2.c (signArctan2): Likewise.
	* sysdeps/ieee754/dbl-64/e_atanh.c (__ieee754_atanh): Likewise.
	* sysdeps/ieee754/dbl-64/e_gamma_r.c (__ieee754_gamma_r):
	Likewise.
	* sysdeps/ieee754/dbl-64/e_jn.c (__ieee754_jn): Likewise.
	(__ieee754_yn): Likewise.
	* sysdeps/ieee754/dbl-64/s_asinh.c (__asinh): Likewise.
	* sysdeps/ieee754/dbl-64/s_atan.c (__signArctan): Likewise.
	* sysdeps/ieee754/dbl-64/s_scalbln.c (__scalbln): Likewise.
	* sysdeps/ieee754/dbl-64/s_scalbn.c (__scalbn): Likewise.
	* sysdeps/ieee754/dbl-64/s_sin.c (do_sin): Likewise.
	(__sin): Likewise.
	* sysdeps/ieee754/dbl-64/s_sincos.c (__sincos): Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c (__nearbyint):
	Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_scalbln.c (__scalbln):
	Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_scalbn.c (__scalbn):
	Likewise.
	* sysdeps/ieee754/flt-32/e_atanhf.c (__ieee754_atanhf): Likewise.
	* sysdeps/ieee754/flt-32/e_gammaf_r.c (__ieee754_gammaf_r):
	Likewise.
	* sysdeps/ieee754/flt-32/e_jnf.c (__ieee754_jnf): Likewise.
	(__ieee754_ynf): Likewise.
	* sysdeps/ieee754/flt-32/s_asinhf.c (__asinhf): Likewise.
	* sysdeps/ieee754/flt-32/s_scalbnf.c (__scalbnf): Likewise.
	* sysdeps/ieee754/k_standard.c (__kernel_standard): Likewise.
	* sysdeps/ieee754/ldbl-128/e_gammal_r.c (__ieee754_gammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-128/e_jnl.c (__ieee754_jnl): Likewise.
	(__ieee754_ynl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_scalblnl.c (__scalblnl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_scalbnl.c (__scalbnl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c (__ieee754_gammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_jnl.c (__ieee754_jnl): Likewise.
	(__ieee754_ynl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fmal.c (__fmal): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_scalblnl.c (__scalblnl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_scalbnl.c (__scalbnl): Likewise.
	* sysdeps/ieee754/ldbl-96/e_gammal_r.c (__ieee754_gammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-96/e_jnl.c (__ieee754_jnl): Likewise.
	(__ieee754_ynl)
	* sysdeps/ieee754/ldbl-96/s_asinhl.c (__asinhl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_scalblnl.c (__scalblnl): Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-copysign.c (copysignl): Likewise.
	* sysdeps/powerpc/power5+/fpu/s_modf.c (__modf): Likewise.
	* sysdeps/powerpc/power5+/fpu/s_modff.c (__modff): Likewise.
 2018-09-27 20:04:48 +00:00
Joseph Myers
f29b6f17e4 Use rint functions not __rint functions in glibc libm. 
Continuing the move to use, within libm, public names for libm
functions that can be inlined as built-in functions on many
architectures, this patch moves calls to __rint functions to call the
corresponding rint names instead, with asm redirection to __rint when
the calls are not inlined.  The x86_64 math_private.h is removed as no
longer useful after this patch.

This patch is relative to a tree with my floor patch
<https://sourceware.org/ml/libc-alpha/2018-09/msg00148.html> applied,
and much the same considerations arise regarding possibly replacing an
IFUNC call with a direct inline expansion.

Tested for x86_64, and with build-many-glibcs.py.

	* include/math.h [!_ISOMAC && !(__FINITE_MATH_ONLY__ &&
	__FINITE_MATH_ONLY__ > 0) && !NO_MATH_REDIRECT] (rint): Redirect
	using MATH_REDIRECT.
	* sysdeps/aarch64/fpu/s_rint.c: Define NO_MATH_REDIRECT before
	header inclusion.
	* sysdeps/aarch64/fpu/s_rintf.c: Likewise.
	* sysdeps/alpha/fpu/s_rint.c: Likewise.
	* sysdeps/alpha/fpu/s_rintf.c: Likewise.
	* sysdeps/i386/fpu/s_rintl.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_rint.c: Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_rint.c: Likewise.
	* sysdeps/ieee754/float128/s_rintf128.c: Likewise.
	* sysdeps/ieee754/flt-32/s_rintf.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_rintl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_rintl.c: Likewise.
	* sysdeps/m68k/coldfire/fpu/s_rint.c: Likewise.
	* sysdeps/m68k/coldfire/fpu/s_rintf.c: Likewise.
	* sysdeps/m68k/m680x0/fpu/s_rint.c: Likewise.
	* sysdeps/m68k/m680x0/fpu/s_rintf.c: Likewise.
	* sysdeps/m68k/m680x0/fpu/s_rintl.c: Likewise.
	* sysdeps/powerpc/fpu/s_rint.c: Likewise.
	* sysdeps/powerpc/fpu/s_rintf.c: Likewise.
	* sysdeps/riscv/rv64/rvd/s_rint.c: Likewise.
	* sysdeps/riscv/rvf/s_rintf.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_rint.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_rintf.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_rint.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_rintf.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_rint.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_rintf.c: Likewise.
	* sysdeps/x86_64/fpu/math_private.h: Remove file.
	* math/e_scalb.c (invalid_fn): Use rint functions instead of
	__rint variants.
	* math/e_scalbf.c (invalid_fn): Likewise.
	* math/e_scalbl.c (invalid_fn): Likewise.
	* sysdeps/ieee754/dbl-64/e_gamma_r.c (__ieee754_gamma_r):
	Likewise.
	* sysdeps/ieee754/flt-32/e_gammaf_r.c (__ieee754_gammaf_r):
	Likewise.
	* sysdeps/ieee754/k_standard.c (__kernel_standard): Likewise.
	* sysdeps/ieee754/k_standardl.c (__kernel_standard_l): Likewise.
	* sysdeps/ieee754/ldbl-128/e_gammal_r.c (__ieee754_gammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c (__ieee754_gammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-96/e_gammal_r.c (__ieee754_gammal_r):
	Likewise.
	* sysdeps/powerpc/powerpc32/fpu/s_llrint.c (__llrint): Likewise.
	* sysdeps/powerpc/powerpc32/fpu/s_llrintf.c (__llrintf): Likewise.
 2018-09-14 13:10:39 +00:00
Paul Pluzhnikov
a6e8926f8d [BZ #20271] Add newlines in __libc_fatal calls. 2018-08-31 18:04:32 -07:00
Joseph Myers
2c753f3e84 Remove sysdeps/sparc/sparc32/soft-fp directory. 
As per <https://sourceware.org/ml/libc-alpha/2014-10/msg00369.html>,
there should not be separate sysdeps/<arch>/soft-fp directories when
those are used by all configurations that use sysdeps/<arch>, and,
more generally, should not be sysdeps/foo/Implies files pointing to a
subdirectory foo/bar.  This patch eliminates the
sysdeps/sparc/sparc32/soft-fp directory accordingly, merging its
contents into sysdeps/sparc/sparc32.

Tested with build-many-glibcs.py that installed stripped shared
libraries for sparc configurations are unchanged by this patch.

	* sysdeps/sparc/sparc32/Implies: Remove sparc/sparc32/soft-fp.
	* sysdeps/sparc/sparc32/Makefile [$(subdir) = soft-fp]
	(sparc32-quad-routines): New variable.  Moved from ....
	[$(subdir) = soft-fp] (sysdep_routines): Add
	$(sparc32-quad-routines).  Moved from ....
	* sysdeps/sparc/sparc32/soft-fp/Makefile: ... here.  Remove file.
	* sysdeps/sparc/sparc32/Versions (libc): Add GLIBC_2.4 symbols
	moved from ....
	* sysdeps/sparc/sparc32/soft-fp/Versions: ... here.  Remove file.
	* sysdeps/sparc/sparc32/soft-fp/q_add.c: Move to ....
	* sysdeps/sparc/sparc32/q_add.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_cmp.c: Move to ....
	* sysdeps/sparc/sparc32/q_cmp.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_cmpe.c: Move to ....
	* sysdeps/sparc/sparc32/q_cmpe.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_div.c: Move to ....
	* sysdeps/sparc/sparc32/q_div.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_dtoq.c: Move to ....
	* sysdeps/sparc/sparc32/q_dtoq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_feq.c: Move to ....
	* sysdeps/sparc/sparc32/q_feq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_fge.c: Move to ....
	* sysdeps/sparc/sparc32/q_fge.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_fgt.c: Move to ....
	* sysdeps/sparc/sparc32/q_fgt.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_fle.c: Move to ....
	* sysdeps/sparc/sparc32/q_fle.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_flt.c: Move to ....
	* sysdeps/sparc/sparc32/q_flt.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_fne.c: Move to ....
	* sysdeps/sparc/sparc32/q_fne.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_itoq.c: Move to ....
	* sysdeps/sparc/sparc32/q_itoq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_lltoq.c: Move to ....
	* sysdeps/sparc/sparc32/q_lltoq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_mul.c: Move to ....
	* sysdeps/sparc/sparc32/q_mul.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_neg.c: Move to ....
	* sysdeps/sparc/sparc32/q_neg.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_qtod.c: Move to ....
	* sysdeps/sparc/sparc32/q_qtod.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_qtoi.c: Move to ....
	* sysdeps/sparc/sparc32/q_qtoi.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_qtoll.c: Move to ....
	* sysdeps/sparc/sparc32/q_qtoll.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_qtos.c: Move to ....
	* sysdeps/sparc/sparc32/q_qtos.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_qtou.c: Move to ....
	* sysdeps/sparc/sparc32/q_qtou.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_qtoull.c: Move to ....
	* sysdeps/sparc/sparc32/q_qtoull.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_sqrt.c: Move to ....
	* sysdeps/sparc/sparc32/q_sqrt.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_stoq.c: Move to ....
	* sysdeps/sparc/sparc32/q_stoq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_sub.c: Move to ....
	* sysdeps/sparc/sparc32/q_sub.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_ulltoq.c: Move to ....
	* sysdeps/sparc/sparc32/q_ulltoq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_util.c: Move to ....
	* sysdeps/sparc/sparc32/q_util.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/q_utoq.c: Move to ....
	* sysdeps/sparc/sparc32/q_utoq.c: ... here.
	* sysdeps/sparc/sparc32/soft-fp/sfp-machine.h: Move to ....
	* sysdeps/sparc/sparc32/sfp-machine.h: ... here.
 2018-05-25 16:51:15 +00:00
Maciej W. Rozycki
10a446ddcc elf: Unify symbol address run-time calculation [BZ #19818] 
Wrap symbol address run-time calculation into a macro and use it
throughout, replacing inline calculations.

There are a couple of variants, most of them different in a functionally
insignificant way.  Most calculations are right following RESOLVE_MAP,
at which point either the map or the symbol returned can be checked for
validity as the macro sets either both or neither.  In some places both
the symbol and the map has to be checked however.

My initial implementation therefore always checked both, however that
resulted in code larger by as much as 0.3%, as many places know from
elsewhere that no check is needed.  I have decided the size growth was
unacceptable.

Having looked closer I realized that it's the map that is the culprit.
Therefore I have modified LOOKUP_VALUE_ADDRESS to accept an additional
boolean argument telling it to access the map without checking it for
validity.  This in turn has brought quite nice results, with new code
actually being smaller for i686, and MIPS o32, n32 and little-endian n64
targets, unchanged in size for x86-64 and, unusually, marginally larger
for big-endian MIPS n64, as follows:

i686:
   text    data     bss     dec     hex filename
 152255    4052     192  156499   26353 ld-2.27.9000-base.so
 152159    4052     192  156403   262f3 ld-2.27.9000-elf-symbol-value.so
MIPS/o32/el:
   text    data     bss     dec     hex filename
 142906    4396     260  147562   2406a ld-2.27.9000-base.so
 142890    4396     260  147546   2405a ld-2.27.9000-elf-symbol-value.so
MIPS/n32/el:
   text    data     bss     dec     hex filename
 142267    4404     260  146931   23df3 ld-2.27.9000-base.so
 142171    4404     260  146835   23d93 ld-2.27.9000-elf-symbol-value.so
MIPS/n64/el:
   text    data     bss     dec     hex filename
 149835    7376     408  157619   267b3 ld-2.27.9000-base.so
 149787    7376     408  157571   26783 ld-2.27.9000-elf-symbol-value.so
MIPS/o32/eb:
   text    data     bss     dec     hex filename
 142870    4396     260  147526   24046 ld-2.27.9000-base.so
 142854    4396     260  147510   24036 ld-2.27.9000-elf-symbol-value.so
MIPS/n32/eb:
   text    data     bss     dec     hex filename
 142019    4404     260  146683   23cfb ld-2.27.9000-base.so
 141923    4404     260  146587   23c9b ld-2.27.9000-elf-symbol-value.so
MIPS/n64/eb:
   text    data     bss     dec     hex filename
 149763    7376     408  157547   2676b ld-2.27.9000-base.so
 149779    7376     408  157563   2677b ld-2.27.9000-elf-symbol-value.so
x86-64:
   text    data     bss     dec     hex filename
 148462    6452     400  155314   25eb2 ld-2.27.9000-base.so
 148462    6452     400  155314   25eb2 ld-2.27.9000-elf-symbol-value.so

	[BZ #19818]
	* sysdeps/generic/ldsodefs.h (LOOKUP_VALUE_ADDRESS): Add `set'
	parameter.
	(SYMBOL_ADDRESS): New macro.
	[!ELF_FUNCTION_PTR_IS_SPECIAL] (DL_SYMBOL_ADDRESS): Use
	SYMBOL_ADDRESS for symbol address calculation.
	* elf/dl-runtime.c (_dl_fixup): Likewise.
	(_dl_profile_fixup): Likewise.
	* elf/dl-symaddr.c (_dl_symbol_address): Likewise.
	* elf/rtld.c (dl_main): Likewise.
	* sysdeps/aarch64/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/alpha/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/arm/dl-machine.h (elf_machine_rel): Likewise.
	(elf_machine_rela): Likewise.
	* sysdeps/hppa/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/hppa/dl-symaddr.c (_dl_symbol_address): Likewise.
	* sysdeps/i386/dl-machine.h (elf_machine_rel): Likewise.
	(elf_machine_rela): Likewise.
	* sysdeps/ia64/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/m68k/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/microblaze/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/mips/dl-machine.h (ELF_MACHINE_BEFORE_RTLD_RELOC):
	Likewise.
	(elf_machine_reloc): Likewise.
	(elf_machine_got_rel): Likewise.
	* sysdeps/mips/dl-trampoline.c (__dl_runtime_resolve): Likewise.
	* sysdeps/nios2/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_rela):
	Likewise.
	* sysdeps/powerpc/powerpc64/dl-machine.h (elf_machine_rela):
	Likewise.
	* sysdeps/riscv/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/s390/s390-32/dl-machine.h (elf_machine_rela):
	Likewise.
	* sysdeps/s390/s390-64/dl-machine.h (elf_machine_rela):
	Likewise.
	* sysdeps/sh/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_rela):
	Likewise.
	* sysdeps/sparc/sparc64/dl-machine.h (elf_machine_rela):
	Likewise.
	* sysdeps/tile/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/x86_64/dl-machine.h (elf_machine_rela): Likewise.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
 2018-04-04 23:09:37 +01:00
H.J. Lu
371b220f62 sparc: Check PIC instead of SHARED in start.S [BZ #22638] 
Since start.o may be compiled as PIC, we should check PIC instead of
SHARED.

	[BZ #22638]
	* sysdeps/sparc/sparc32/start.S (_start): Check PIC instead of
	SHARED.
	* sysdeps/sparc/sparc64/start.S (_start): Likewise.
 2018-02-05 05:46:56 -08:00
Joseph Myers
688903eb3e Update copyright dates with scripts/update-copyrights. 
* All files with FSF copyright notices: Update copyright dates
	using scripts/update-copyrights.
	* locale/programs/charmap-kw.h: Regenerated.
	* locale/programs/locfile-kw.h: Likewise.
 2018-01-01 00:32:25 +00:00
Joseph Myers
174edbde7e Update SPARC divrem generation to match output. 
While working on another patch I noticed that (a)
sysdeps/sparc/sparc32/Makefile is the only place with special
realclean settings, apart from po/, and (b) the generated files with a
rule in that Makefile to generate them (using m4) had been patched
manually so no longer corresponded with the output of the generator -
so if the timestamps were wrong, a build would result in changes to
the files in the source directory.  (They also didn't correspond
because of changes in make 3.81 to how make handles whitespace at the
start of a line in a sequence of backslash-newline continuation lines
within a recipe.)

This patch fixes the generation and output files to match.  The issue
with make and whitespace at start of continuation lines is fixed by
putting those newlines outside of arguments to echo, so the number of
spaces in the argument matches the number in the existing generated
files.  Then divrem.m4 is changed to avoid generating whitespace-only
lines (my fix to the outputs from 2013; this fix to the generator also
changes the indentation of a label in the output files) and to
generate an alias in udiv.S (Adhemerval's fix from March).

build-many-glibcs.py doesn't have a non-v9 SPARC configuration,
because non-v9 32-bit SPARC didn't build when I set up
build-many-glibcs.py but sparcv9 did build.  Whether or not non-v9
32-bit SPARC now builds (or indeed whether or not support for it is
obsolete), I tested by removing the sparcv8 and sparcv9 versions of
the four files in question, so forcing the generated files to be built
and used, and the compilation parts of the glibc testsuite passed.

	* sysdeps/sparc/sparc32/Makefile
	($(divrem:%=$(sysdep_dir)/sparc/sparc32/%.S)): Do not include
	start-of-line whitespace in argument of echo.
	* sysdeps/sparc/sparc32/divrem.m4: Avoid generating lines starting
	with whitespace.  Generate __wrap_.udiv alias.
	* sysdeps/sparc/sparc32/rem.S: Regenerated.
	* sysdeps/sparc/sparc32/sdiv.S: Likewise.
	* sysdeps/sparc/sparc32/udiv.S: Likewise.
	* sysdeps/sparc/sparc32/urem.S: Likewise.
 2017-12-15 14:06:07 +00:00
Patrick McGehearty
e6a1c5dc77 sparc: M7 optimized memset/bzero 
Support added to identify Sparc M7/T7/S7/M8/T8 processor capability.
Performance tests run on Sparc S7 using new code and old niagara4 code.

Optimizations for memset also apply to bzero as they share code.

For memset/bzero, performance comparison with niagara4 code:
For memset nonzero data,
  256-1023 bytes - 60-90% gain (in cache); 5% gain (out of cache)
  1K+ bytes - 80-260% gain (in cache); 40-80% gain (out of cache)
For memset zero data (and bzero),
  256-1023 bytes - 80-120% gain (in cache), 0% gain (out of cache)
  1024+ bytes - 2-4x gain (in cache), 10-35% gain (out of cache)

Tested in sparcv9-*-* and sparc64-*-* targets in both multi and
non-multi arch configurations.

	Patrick McGehearty <patrick.mcgehearty@oracle.com>
	Adhemerval Zanella  <adhemerval.zanella@linaro.org>

	* sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile
	(sysdeps_routines): Add memset-niagara7.
	* sysdeps/sparc/sparc64/multiarch/Makefile (sysdes_rotuines):
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/multiarch/memset-niagara7.S: New
	file.
	* sysdeps/sparc/sparc64/multiarch/memset-niagara7.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Add __bzero_niagara7 and __memset_niagara7.
	* sysdeps/sparc/sparc64/multiarch/ifunc-memset.h (IFUNC_SELECTOR):
	Add niagara7 option.
	* NEWS: Mention sparc m7 optimized memcpy, mempcpy, memmove, and
	memset.
 2017-12-14 08:48:19 -02:00
Patrick McGehearty
1b6e07f8e0 sparc: M7 optimized memcpy/mempcpy/memmove 
Support added to identify Sparc M7/T7/S7/M8/T8 processor capability.
Performance tests run on Sparc S7 using new code and old niagara4 code.

Optimizations for memcpy also apply to mempcpy and memmove
where they share code. Optimizations for memset also apply
to bzero as they share code.

For memcpy/mempcpy/memmove, performance comparison with niagara4 code:
Long word aligned data
  0-127 bytes - minimal changes
  128-1023 bytes - 7-30% gain
  1024+ bytes - 1-7% gain (in cache); 30-100% gain (out of cache)
Word aligned data
  0-127 bytes - 50%+ gain
  128-1023 bytes - 10-200% gain
  1024+ bytes - 0-15% gain (in cache); 5-50% gain (out of cache)
Unaligned data
  0-127 bytes - 0-70%+ gain
  128-447 bytes - 40-80%+ gain
  448-511 bytes - 1-3% loss
  512-4096 bytes - 2-3% gain (in cache); 0-20% gain (out of cache)
  4096+ bytes - ± 3% (in cache); 20-50% gain (out of cache)

Tested in sparcv9-*-* and sparc64-*-* targets in both multi and
non-multi arch configurations.

	Patrick McGehearty  <patrick.mcgehearty@oracle.com>
	Adhemerval Zanella  <adhemerval.zanella@linaro.org>

	* sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile
	(sysdeps_routines): Add memcpy-memmove-niagara7 and memmove-ultra1.
	* sysdeps/sparc/sparc64/multiarch/Makefile (sysdeps_routines):
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/multiarch/memcpy-memmove-niagara7.S:
	New file.
	* sysdeps/sparc/sparc32/sparcv9/multiarch/memmove-ultra1.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/multiarch/rtld-memmove.c: Likewise.
	* sysdeps/sparc/sparc64/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Add __memcpy_niagara7, __mempcpy_niagara7,
	and __memmove_niagara7.
	* sysdeps/sparc/sparc64/multiarch/ifunc-memcpy.h (IFUNC_SELECTOR):
	Add niagara7 option.
	* sysdeps/sparc/sparc64/multiarch/memmove.c: New file.
	* sysdeps/sparc/sparc64/multiarch/ifunc-memmove.h: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-memmove-niagara7.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memmove-ultra1.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/rtld-memmove.c: Likewise.
 2017-12-14 08:47:38 -02:00
Jose E. Marchesi
767a26d6a0 sparc: assembly version of memmove for ultra1+ 
Tested in sparcv9-*-* and sparc64-*-* targets in both non-multi-arch and
multi-arch configurations.

	* sysdeps/sparc/sparc32/sparcv9/memmove.S: New file.
	* sysdeps/sparc/sparc32/sparcv9/rtld-memmove.c: Likewise.
	* sysdeps/sparc/sparc64/memmove.S: Likewise.
	* sysdeps/sparc/sparc64/rtld-memmove.c: Likewise.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
 2017-12-14 08:47:09 -02:00
Adhemerval Zanella
5b7bd9756c sparc: Fix sparv9 multiarch build 
Fix build caused by 5b4e5e7869.

	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysign.c: Fix build
	due redirect macro.
 2017-12-01 15:47:23 -02:00
Adhemerval Zanella
2a14526bfa sparc: refactor cpu_relax to C 
* sysdeps/sparc/sparc64/cpu_relax.c: New file.
	* sysdeps/sparc/sparc32/sparcv9/cpu_relax.c: Likewise.
	* sysdeps/sparc/sparc64/cpu_relax.S: Remove file.
	* sysdeps/sparc/sparc32/sparcv9/cpu_relax.S: Likewise.

Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
 2017-12-01 11:51:10 -02:00
Adhemerval Zanella
1c051a9b09 sparc: refactor sparc32 nearbyint{f} selector to C 
This patch refactors the sparc32 ifunc selector to a C implementation.
Also, the generic symbol is moved to its own implementation file
s_nearbyint{f}-generic.S).

Checked on sparc64-linux-gnu and sparcv9-linux-gnu.

	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
	(libm-sysdep_routines): Add s_nearbyintf-generic and
	s_nearbyint-generic.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint-generic.S:
	New file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf-generic.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf.c:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint.S: Remove
	file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf.S:
	Likewise.

Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
 2017-12-01 11:51:08 -02:00
Adhemerval Zanella
dbeb74ef84 sparc: refactor sparc32 rint{f} selector to C 
This patch refactors the sparc32 ifunc selector to a C implementation.
Also, the generic symbol is moved to its own implementation file
s_rint{f}-generic.S).

Checked on sparc64-linux-gnu and sparcv9-linux-gnu.

	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
	(libm-sysdep_routines): Add s_rintf-generic and s_rint-generic.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_rint-generic.S: New
	file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_rint.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_rintf-generic.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_rintf.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_rint.S: Remove file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_rintf.S: Likewise.

Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
 2017-12-01 11:49:36 -02:00
Adhemerval Zanella
fa7ded9612 sparc: refactor sparc32 llrint{f} selector to C 
This patch refactors the sparc32 ifunc selector to a C implementation.
Also, the generic symbol is moved to its own implementation file
s_llrint{f}-generic.S).

Checked on sparc64-linux-gnu and sparcv9-linux-gnu.

	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
	(libm-sysdep_routines): Add s_llrintf-generic and s_llrint-generic.
	* sysdeps/sparc/sparcv9/fpu/multiarch/s_llrint-generic.S: New
	file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_llrint.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_llrintf-generic.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_llrintf.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_llrint.S: Remove file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_llrintf.S: Likewise.

Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
 2017-12-01 11:49:19 -02:00
Adhemerval Zanella
e240cf0e0e sparc: refactor sparc32 fabs{f} selector to C 
This patch refactors the sparc32 ifunc selector to a C implementation.
Also, the generic symbol is moved to its own implementation file
s_fabs{f}-generic.S).

Checked on sparc64-linux-gnu and sparcv9-linux-gnu.

	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
	(libm-sysdep_routines): Add s_fabsf-generic and s_fabs-generic.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs-generic.S: New
	file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf-generic.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.S: Remove file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.S: Likewise.

Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
 2017-12-01 11:48:58 -02:00
Adhemerval Zanella
5b4e5e7869 sparc: refactor sparc32 copysign selector to C 
This patch refactors the sparc32 ifunc selector to a C implementation.
Also, the generic symbol is moved to its own implementation file
s_copysign{f}-generic.S).

Checked on sparc64-linux-gnu and sparcv9-linux-gnu.

	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
	(sysdep_calls): New rule.
	(sysdep_routines): Use sysdep_calls as base.
	(libm-sysdep_routines): Add generic rule for symbols shared with
	libc.  Add s_copysign-generic and s_copysign-generic objects.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysign-generic.S:
	New file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysign.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysignf-generic.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysignf.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysign.S: Remove file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysignf.S: Likewise.

Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
 2017-12-01 11:48:39 -02:00
Joseph Myers
18305fba55 Remove SPARC lllrint aliases. 
The sparc32/sparcv9/fpu/multiarch implementations of llrint / llrintf
have aliases lllrint / lllrintf.  No such function is exported from or
used in libm and these aliases should not be there; I expect they
arose accidentally in the course of converting a 64-bit implementation
(where lrint and llrint can be aliases) to a 32-bit llrint
implementation.  This patch removes those spurious aliases.

Tested (compilation only) with build-many-glibcs.py for
sparcv9-linux-gnu.

	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_llrint.S
	(__lllrint): Remove alias.
	(lllrint): Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_llrintf.S
	(__lllrintf): Likewise.
	(lllrintf): Likewise.
 2017-11-30 00:43:28 +00:00
Joseph Myers
3e5efdbdbe Use libm_alias_float for sparc. 
Continuing the preparation for additional _FloatN / _FloatNx function
aliases, this patch makes sparc libm function implementations use
libm_alias_float to define function aliases.

Tested with build-many-glibcs.py for all its sparc configurations that
installed stripped shared libraries are unchanged by the patch.

	* sysdeps/sparc/sparc32/fpu/s_copysignf.S: Include
	<libm-alias-float.h>.
	(copysignf): Define using libm_alias_float.
	* sysdeps/sparc/sparc32/fpu/s_fabsf.S: Include
	<libm-alias-float.h>.
	(fabsf): Define using libm_alias_float.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysignf.S:
	Include <libm-alias-float.h>.
	(copysignf): Define using libm_alias_float.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabsf.S: Include
	<libm-alias-float.h>.
	(fabsf): Define using libm_alias_float.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdimf.c: Include
	<libm-alias-float.h>.
	(fdimf): Define using libm_alias_float.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fmaf.c: Include
	<libm-alias-float.h>.
	(fmaf): Define using libm_alias_float.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_llrintf.S: Include
	<libm-alias-float.h>.
	(llrintf): Define using libm_alias_float.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf.S:
	Include <libm-alias-float.h>.
	(nearbyintf): Define using libm_alias_float.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_rintf.S: Include
	<libm-alias-float.h>.
	(rintf): Define using libm_alias_float.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_llrintf.S: Include
	<libm-alias-float.h>.
	(llrintf): Define using libm_alias_float.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_lrintf.S: Include
	<libm-alias-float.h>.
	(lrintf): Define using libm_alias_float.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyintf.S: Include
	<libm-alias-float.h>.
	(nearbyintf): Define using libm_alias_float.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_rintf.S: Include
	<libm-alias-float.h>.
	(rintf): Define using libm_alias_float.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_ceilf.c: Include
	<libm-alias-float.h>.
	(ceilf): Define using libm_alias_float.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_floorf.c: Include
	<libm-alias-float.h>.
	(floorf): Define using libm_alias_float.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_fmaf.c: Include
	<libm-alias-float.h>.
	(fmaf): Define using libm_alias_float.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_lrintf.c: Include
	<libm-alias-float.h>.
	(lrintf): Define using libm_alias_float.
	(llrintf): Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_nearbyintf.c: Include
	<libm-alias-float.h>.
	(nearbyintf): Define using libm_alias_float.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_rintf.c: Include
	<libm-alias-float.h>.
	(rintf): Define using libm_alias_float.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_truncf.c: Include
	<libm-alias-float.h>.
	(truncf): Define using libm_alias_float.
	* sysdeps/sparc/sparc64/fpu/s_copysignf.S: Include
	<libm-alias-float.h>.
	(copysignf): Define using libm_alias_float.
	* sysdeps/sparc/sparc64/fpu/s_fabsf.c: Include
	<libm-alias-float.h>.
	(fabsf): Define using libm_alias_float.
	* sysdeps/sparc/sparc64/fpu/s_lrintf.S: Include
	<libm-alias-float.h>.
	(lrintf): Define using libm_alias_float.
	(llrintf): Likewise.
	* sysdeps/sparc/sparc64/fpu/s_nearbyintf.S: Include
	<libm-alias-float.h>.
	(nearbyintf): Define using libm_alias_float.
	* sysdeps/sparc/sparc64/fpu/s_rintf.S: Include
	<libm-alias-float.h>.
	(rintf): Define using libm_alias_float.
 2017-11-30 00:30:40 +00:00
Joseph Myers
875cd54855 Use libm_alias_double for sparc. 
Continuing the preparation for additional _FloatN / _FloatNx function
aliases, this patch makes sparc libm function implementations use
libm_alias_double to define function aliases (with consequent
simplification where compat symbol handling is now done by those
macros rather than locally in architecture-specific code).

Tested with build-many-glibcs.py for all its sparc configurations that
installed stripped shared libraries are unchanged by the patch.

	* sysdeps/sparc/sparc32/fpu/s_copysign.S: Include
	<libm-alias-double.h>.
	(copysign): Define using libm_alias_double.
	* sysdeps/sparc/sparc32/fpu/s_fabs.S: Include
	<libm-alias-double.h>.
	(fabs): Define using libm_alias_double.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysign.S:
	Include <libm-alias-double.h>.
	(copysign): Define using libm_alias_double.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.S: Include
	<libm-alias-double.h>.
	(fabs): Define using libm_alias_double.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim.c: Include
	<libm-alias-double.h>.
	(fdim): Define using libm_alias_double.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fma.c: Include
	<libm-alias-double.h>.
	(fma): Define using libm_alias_double.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_llrint.S: Include
	<libm-alias-double.h>.
	(llrint): Define using libm_alias_double.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint.S:
	Include <libm-alias-double.h>.
	(nearbyint): Define using libm_alias_double.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_rint.S: Include
	<libm-alias-double.h>.
	(rint): Define using libm_alias_double.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_fabs.S: Include
	<libm-alias-double.h>.
	(fabs): Define using libm_alias_double.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_llrint.S: Include
	<libm-alias-double.h>.
	(llrint): Define using libm_alias_double.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyint.S: Include
	<libm-alias-double.h>.
	(nearbyint): Define using libm_alias_double.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_rint.S: Include
	<libm-alias-double.h>.
	(rint): Define using libm_alias_double.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_ceil.c: Include
	<libm-alias-double.h>.
	(ceil): Define using libm_alias_double.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_floor.c: Include
	<libm-alias-double.h>.
	(floor): Define using libm_alias_double.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_fma.c: Include
	<libm-alias-double.h>.
	(fma): Define using libm_alias_double.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_lrint.c: Include
	<libm-alias-double.h>.
	(lrint): Define using libm_alias_double.
	(llrint): Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_nearbyint.c: Include
	<libm-alias-double.h>.
	(nearbyint): Define using libm_alias_double.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_rint.c: Include
	<libm-alias-double.h>.
	(rint): Define using libm_alias_double.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_trunc.c: Include
	<libm-alias-double.h>.
	(trunc): Define using libm_alias_double.
	* sysdeps/sparc/sparc64/fpu/s_copysign.S: Include
	<libm-alias-double.h>.
	(copysign): Define using libm_alias_double.
	* sysdeps/sparc/sparc64/fpu/s_fabs.c: Include
	<libm-alias-double.h>.
	(fabs): Define using libm_alias_double.
	* sysdeps/sparc/sparc64/fpu/s_lrint.S: Include
	<libm-alias-double.h>.
	(lrint): Define using libm_alias_double.
	(llrint): Likewise.
	* sysdeps/sparc/sparc64/fpu/s_nearbyint.S: Include
	<libm-alias-double.h>.
	(nearbyint): Define using libm_alias_double.
	* sysdeps/sparc/sparc64/fpu/s_rint.S: Include
	<libm-alias-double.h>.
	(rint): Define using libm_alias_double.
 2017-11-29 23:40:07 +00:00
Joseph Myers
cf4ebc27fe Fix missing sparcv9 --disable-multi-arch fabsl compat symbol (bug 22229). 
The --disable-multi-arch case of sparcv9 libm is missing a fabsl
compat symbol for when long double had the same ABI as double.  This
patch adds the missing compat symbol to this implementation.  As my
fix for other instances of this missing compat symbol postdates the
last release, I'm considering this as being part of bug 22229 that was
missing from my previous fix rather than as a separate issue, and so
as not needing a new bug report in Bugzilla.

Tested (compilation only) with build-many-glibcs.py for
sparcv9-linux-gnu --disable-multi-arch.

	[BZ #22229]
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_fabs.S: Include
	<math_ldbl_opt.h>.
	(fabsl): Define as compat symbol at version GLIBC_2_0 for libm.
 2017-11-29 23:09:03 +00:00
Adhemerval Zanella
a55430cb0e sparc: Assume VIS3 support 
This patch assumes VIS3 support by binutils, which is supported since
version 2.22.  This leads to some code simplification, mostly on
multiarch build where there is only one variant instead of previously
two (whether binutils supports VIS3 instructions or not).

For multiarch files where HAVE_AS_VIS3_SUPPORT was checked and
the default implementation was built with a different name, a new
file with (implementation with -generic appended) is added.

Checked on sparc64-linux-gnu and sparcv9-linux-gnu.

	* config.h.in (HAVE_AS_VIS3_SUPPORT): Remove check for VIS3 support.
	* sysdeps/sparc/configure.ac (HAVE_AS_VIS3_SUPPORT): Likewise.
	* sysdeps//sparc/sparc32/sparcv9/fpu/multiarch/s_fdim.c: Likewise.
	* sysdeps//sparc/sparc32/sparcv9/fpu/multiarch/s_fdimf.c: Likewise.
	* sysdeps//sparc/sparc32/sparcv9/fpu/multiarch/s_fma.c: Likewise.
	* sysdeps//sparc/sparc32/sparcv9/fpu/multiarch/s_fmaf.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_ceil.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_ceilf.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_floor.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_floorf.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_fma.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_fmaf.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_trunc.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_truncf.c: Likewise.
	* sysdeps/sparc/sparc-ifunc.h [!HAVE_AS_VIS3_SUPPORT]
	(SPARC_ASM_VIS3_IFUNC, SPARC_ASM_VIS3_VIS2_IFUNC): Remove macros.
	* sysdeps/sparc/sparc32/sparcv9/Makefile [$(have-as-vis3) != yes]
	(ASFLAGS.o, ASFLAGS-.os, ASFLAGS-.op, ASFLAGS-.oS): Remove rules.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
	($(have-as-vis3) == yes): Remove conditional.
	* sysdeps/sparc/sparc64/Makefile (($(have-as-vis3) == yes)):
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim-generic.c: New
	file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdimf-generic.c: New
	file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fma-generic.c: New
	file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fmaf-generic.c: New
	file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_ceil-generic.c: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_ceilf-generic.c: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_floor-generic.c: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_floorf-generic.c: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_fma-generic.c: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_fmaf-generic.c: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_trunc-generic.c: New file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_truncf-generic.c: New file.

Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
 2017-11-29 08:18:00 -02:00
Adhemerval Zanella
6905656404 sparc: Implement memset/bzero ifunc selection in C 
This patch refactor the SPARC64 ifunc selector to a C implementation.
No functional change is expected, including ifunc resolution rules.

Checked on sparc64-linux-gnu, sparcv9-linux-gnu and x86_64-linux-gnu.

	* sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile
	[$(subdir) = string] (sysdep_routines): Add memset-ultra1.
	* sysdeps/sparc/sparc64/multiarch/Makefile [$(subdir) = string]
	(sysdep_routines): Add memset-ultra1.
	* sysdeps/sparc/sparc32/sparcv9/multiarch/memset-ultra1.S: New
	file.
	* sysdeps/sparc/sparc32/sparcv9/multiarch/memset.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/multiarch/bzero.c: Likewise.
	* sysdeps/sparc/sparc64/multiarch/ifunc-memset.h: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memset-ultra1.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memset.c: Likewise.
	* sysdeps/sparc/sparc64/multiarch/bzero.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/multiarch/memset.S: Remove file.
	* sysdeps/sparc/sparc64/multiarch/memset.S: Likewise.

Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
 2017-11-28 08:53:15 -02:00
Adhemerval Zanella
88684de7a6 sparc: Implement memcpy/mempcpy ifunc selection in C 
This patch refactor the SPARC64 ifunc selector to a C implementation.
The x86_64 implementation is used as default, which resulted in common
definitions (ifunc-init.h) used on both architectures.  No functional
change is expected, including ifunc resolution rules.

Checked on sparc64-linux-gnu, sparcv9-linux-gnu and x86_64-linux-gnu.

	* sysdeps/sparc/sparc32/sparcv9/multiarch/memcpy-ultra1.S: New
	file.
	* sysdeps/sparc/sparc32/sparcv9/multiarch/memcpy.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/multiarch/mempcpy.c: Likewise.
	* sysdeps/sparc/sparc64/multiarch/ifunc-memcpy.h: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-ultra1.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy.c: Likewise.
	* sysdeps/sparc/sparc64/multiarch/mempcpy.c: Likewise.
	* sysdeps/sparc/sparc-ifunc.h (sparc_libc_ifunc_redirected): New
	macro.
	* sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile
	[$(subdir) = string] (sysdep_routines): Add memcpy-ultra1.
	* sysdeps/sparc/sparc64/multiarch/Makefile [$(subdir) = string]
	(sysdep_routines): Add memcpy-ultra1.
	* sysdeps/sparc/sparc64/multiarch/memcpy.S: Remove file.
	* sysdeps/sparc/sparc32/sparcv9/multiarch/memcpy.S: Likewise.

Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
 2017-11-28 08:53:15 -02:00
James Clarke
8644588807 Fix TLS relocations against local symbols on powerpc32, sparc32 and sparc64 
Normally, TLS relocations against local symbols are optimised by the linker
to be absolute.  However, gold does not do this, and so it is possible to
end up with, for example, R_SPARC_TLS_DTPMOD64 referring to a local symbol.
Since sym_map is left as null in elf_machine_rela for the special local
symbol case, the relocation handling thinks it has nothing to do, and so
the module gets left as 0.  Havoc then ensues when the variable in question
is accessed.

Before this fix, the main_local_gold program would receive a SIGBUS on
sparc64, and SIGSEGV on powerpc32.  With this fix applied, that test now
passes like the rest of them.

	* sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_rela):
	Assign sym_map to be map for local symbols, as TLS relocations
	use sym_map to determine whether the symbol is defined and to
	extract the TLS information.
	* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_rela): Likewise.
	* sysdeps/sparc/sparc64/dl-machine.h (elf_machine_rela): Likewise.
 2017-10-13 16:14:16 -03:00
Joseph Myers
006e766437 Use libm_alias_ldouble for SPARC fabsl. 
This patch makes SPARC fabsl implementation use libm_alias_ldouble, to
prepare them for also defining _Float128 function aliases.

Tested with build-many-glibcs.py that installed stripped shared
libraries (sparc64-linux-gnu and sparcv9-linux-gnu) are unchanged by
the patch.

	* sysdeps/sparc/sparc32/fpu/s_fabsl.c: Include
	<libm-alias-ldouble.h>.
	(fabsl): Define using libm_alias_ldouble.
	* sysdeps/sparc/sparc64/fpu/s_fabsl.c: Include
	<libm-alias-ldouble.h>.
	(fabsl): Define using libm_alias_ldouble.
 2017-10-13 16:43:18 +00:00
Joseph Myers
7e16a5d1d1 Use libm_alias_double for dbl-64 fma. 
This patch makes dbl-64 fma use libm_alias_double.  The ldbl-opt
version is removed.  The sparc32 version no longer needs to handle
compat symbols, while alpha needs a new wrapper to avoid getting the
ldbl-128 version (where ldbl-opt is earlier in the list of sysdeps
directories, so previously fma came from there).

Tested for x86_64, and tested with build-many-glibcs.py that installed
stripped shared libraries are unchanged by the patch.

	* sysdeps/ieee754/dbl-64/s_fma.c: Include <libm-alias-double.h>.
	(fma): Define using libm_alias_double.
	* sysdeps/ieee754/ldbl-opt/s_fma.c: Remove file.
	* sysdeps/sparc/sparc32/fpu/s_fma.c: Do not include
	<math_ldbl_opt.h>.
	(fmal): Do not define as compat symbol here.
	* sysdeps/alpha/fpu/s_fma.c: New file.
 2017-10-04 20:32:48 +00:00
Joseph Myers
32d372d548 Restore sparc32 copysignl, fabsl, fmal compat symbols (bug 22229). 
32-bit SPARC libm should have compat symbols for copysignl
(GLIBC_2.0), fabsl (GLIBC_2.0), fmal (GLIBC_2.1), pointing to the
double functions; they were present in glibc 2.8, for example, but are
now missing, probably when optimized SPARC function implementations
were added without appropriate compat symbol handling.  The same
applies to copysignl in libc.  This patch restores those compat
symbols.

Tested with build-many-glibcs.py for sparcv9-linux-gnu.

	[BZ #22229]
	* sysdeps/sparc/sparc32/fpu/s_copysign.S: Include
	<math_ldbl_opt.h>
	(copysignl): Define as compat symbol at version GLIBC_2_0 for libm
	and libc.
	* sysdeps/sparc/sparc32/fpu/s_fabs.S: Include <math_ldbl_opt.h>.
	(fabsl): Define as compat symbol at version GLIBC_2_0 for libm.
	* sysdeps/sparc/sparc32/fpu/s_fma.c: Include <math_ldbl_opt.h>.
	(fmal): Define as compat symbol at version GLIBC_2_1 for libm.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysign.S:
	Include <math_ldbl_opt.h>
	(copysignl): Define as compat symbol at version GLIBC_2_0 for libm
	and libc.
	(compat_symbol): Undefine and redefine.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fabs.S: Include
	<math_ldbl_opt.h>
	(fabsl): Define as compat symbol at version GLIBC_2_0 for libm.
	(compat_symbol): Undefine and redefine.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fma.c
	[HAVE_AS_VIS3_SUPPORT]: Include <math_ldbl_opt.h>.
	[HAVE_AS_VIS3_SUPPORT] (fmal): Define as compat symbol at version
	GLIBC_2_1 for libm.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Add
	GLIBC_2.0 copysignl symbol.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Add
	GLIBC_2.0 copysignl and fabsl and GLIBC_2.1 fmal symbols.
 2017-10-04 16:46:05 +00:00
Joseph Myers
620ff9eea6 Define and use libm_alias_double. 
Continuing the process of setting up common macros for libm function
aliases, with a view to using them to define _FloatN / _FloatNx
aliases in future, this patch adds a libm_alias_double macro and uses
it in the type-generic templates.

This macro handles defining aliases for double, and for long double in
the NO_LONG_DOUBLE case.  It also handles defining compat symbols for
long double = double for architectures that changed their long double
format.  By so doing, it eliminates the need for the
M_LIBM_NEED_COMPAT and declare_mgen_libm_compat macros; the single
declare_mgen_alias call in each template now suffices to define all
required compat symbols.  When used for more double functions (not
based on type-generic templates), I expect it will eliminate the need
for most ldbl-opt wrappers for such functions.

A few special cases are needed.  __clog10l is a public symbol (for
historical reasons) so needs to be given appropriate compat versions
for architectures that changed their long double format, but is not
defined as an alias using the normal macros since __clog10* are *not*
public symbols for _FloatN / _FloatNx types.  For scalbn, scalbln and
log1p, the changes adding errno setting support for those functions
left compat symbols pointing directly to the non-errno-setting
implementations.  There is no requirement for the compat symbols not
to set errno; that just made for the simplest patches at that time.
Now, with these common macros, it's natural to redirect the compat
symbols to the errno-setting wrappers, which I intend to do in a
separate patch.

Tested for x86_64, and with build-many-glibcs.py.  For ldbl-opt
platforms the stripped libm.so binaries are changed (disassembly
unchanged) because the details of how the clog10l compat symbol is
created mean it ceases to be weak as it was before; for other
platforms, stripped libm.so binaries are unchanged.

2017-09-13  Joseph Myers  <joseph@codesourcery.com>

	* sysdeps/generic/libm-alias-double.h: New file.
	* sysdeps/ieee754/ldbl-opt/libm-alias-double.h: Likewise.
	* sysdeps/generic/math-type-macros-double.h: Include
	<libm-alias-double.h>.
	[declare_mgen_alias] (declare_mgen_alias): Define to use
	libm_alias_double.
	* sysdeps/generic/math-type-macros.h [!M_LIBM_NEED_COMPAT]
	(M_LIBM_NEED_COMPAT): Remove macro.
	[!M_LIBM_NEED_COMPAT] (declare_mgen_libm_compat): Likewise.
	* sysdeps/ieee754/ldbl-opt/math-type-macros-double.h: Remove.
	* math/cabs_template.c [M_LIBM_NEED_COMPAT]: Remove conditional
	code.
	* math/carg_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/cimag_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/conj_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/creal_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_cacos_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_cacosh_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_casin_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_casinh_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_catan_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_catanh_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_ccos_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_ccosh_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_cexp_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_clog10_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_clog_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_cpow_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_cproj_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_csin_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_csinh_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_csqrt_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_ctan_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_ctanh_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_fdim_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_fmax_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_fmin_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/s_nan_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* math/w_ilogb_template.c [M_LIBM_NEED_COMPAT]: Likewise.
	* sysdeps/ieee754/ldbl-opt/s_clog10.c: New file.
	* sysdeps/ieee754/ldbl-opt/s_ldexp.c (M_LIBM_NEED_COMPAT): Remove
	macro.
	(declare_mgen_alias): New macro.
	* sysdeps/ieee754/ldbl-opt/w_log1p.c: New file.
	* sysdeps/ieee754/ldbl-opt/w_scalbln.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim-vis3.c
	(M_LIBM_NEED_COMPAT): Remove macro.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim.c
	[HAVE_AS_VIS3_SUPPORT]: Include <math_ldbl_opt.h> and
	<first-versions.h>.
	[HAVE_AS_VIS3_SUPPORT && LONG_DOUBLE_COMPAT (libm,
	FIRST_VERSION_libm_fdiml)]: Define fdiml as compat symbol.
 2017-09-13 01:13:30 +00:00
Joseph Myers
831bbd5527 Remove SPARC sqrt wrappers (bug 21973). 
This patch removes the SPARC-specific wrappers for sqrt and sqrtf.

These wrappers, by adding architecture-specific uses of _LIB_VERSION
and __kernel_standard, unnecessarily complicate cleanups of libm error
handling.  They also do not serve a useful optimization purpose.  GCC
knows about sqrt as a built-in function, and can generate direct calls
to a hardware square root instruction, either on its own, in the
-fno-math-errno case, or together with an inline check for the
argument being negative and a call to the out-of-line sqrt function
for error handling only in that case (and has been able to do so for a
long time).  Thus in practice the wrapper will only be called only in
the case of negative arguments, which is not a case it is useful to
optimize for.

The removal of the wrappers also uncovers, and fixes, an old bug.
32-bit SPARC libm used (checked with glibc 2.8 binaries) to have a
sqrtl compat symbol, version GLIBC_2.0, for old binaries when sqrtl
was an alias of sqrt (I don't have pre-glibc-2.4 binaries for SPARC to
hand to check for the sqrtl symbol in those).  This disappeared,
probably with:

commit 8847f03770
Author: David S. Miller <davem@davemloft.net>
Date:   Tue Feb 28 22:37:58 2012 -0800

    Add sparc optimized sqrt{,f}.

Removing the wrappers brings back the generic ldbl-opt logic for
creating such compat symbols, and so restores the compat symbol that
should be there.  This could of course also be fixed in the wrappers -
but as noted above, the wrappers are optimizing a case it's not useful
to optimize, so the bug of the missing compat symbol serves to
illustrate the risks involved with the extra complexity of
architecture-specific function versions where not needed.

Tested with build-many-glibcs.py.

	[BZ #21973]
	* sysdeps/sparc/sparc32/fpu/w_sqrt_compat.S: Remove file.
	* sysdeps/sparc/sparc32/fpu/w_sqrtf_compat.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrt_compat-vis3.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrt_compat.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrtf_compat-vis3.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrtf_compat.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrt_compat.S : Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrtf_compat.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/w_sqrt_compat.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/w_sqrtf_compat.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Add
	GLIBC_2.0 sqrtl symbol.
 2017-08-21 17:46:34 +00:00
Joseph Myers
813378e9fe Obsolete matherr, _LIB_VERSION, libieee.a. 
This patch obsoletes support for SVID libm error handling (the system
where a user-defined function matherr is called on a libm function
error; only enabled if you also set _LIB_VERSION = _SVID_ or
_LIB_VERSION = _XOPEN_) and the use of the _LIB_VERSION global
variable to control libm error handling.  matherr and _LIB_VERSION are
made into compat symbols, not supported for new ports or for static
linking.  The libieee.a object file (which sets _LIB_VERSION = _IEEE_,
so disabling errno setting for some functions) is also removed, and
all the related definitions are removed from math.h.

The manual already recommends against using matherr, and it's already
not supported for _Float128 functions (those use new wrappers that
don't support matherr, only errno) - this patch means that it becomes
possible to e.g. add sinf32 as an alias to sinf without that resulting
in undesired matherr support in sinf32 for existing glibc ports.
matherr support is not part of any standard supported by glibc (it was
removed in XPG4).

Because matherr is a function to be defined by the user, of course
user programs defining such a function will still continue to link; it
just quietly won't be used.  If they try to write to the library's
copy of _LIB_VERSION to enable SVID error handling, however, they will
get a link error (but if they define their own _LIB_VERSION variable,
they won't).

I expect the most likely case of build failures from this patch to be
programs with unconditional cargo-culted uses of -lieee (based on a
notion of "I want IEEE floating point", not any actual requirement for
that library).

Ideally, the new-port-or-static-linking case would use the new
wrappers used for _Float128.  This is not implemented in this patch,
because of the complication of architecture-specific (powerpc32 and
sparc) sqrt wrappers that use _LIB_VERSION and __kernel_standard
directly.  Thus, the old wrappers and __kernel_standard are still
built unconditionally, and _LIB_VERSION still exists in static libm.
But when the old wrappers and __kernel_standard are built in the
non-compat case, _LIB_VERSION and matherr are defined as macros so
code to support those features isn't actually built into static libm
or new ports' shared libm after this patch.

I intend to move to the new wrappers for static libm and new ports in
followup patches.  I believe the sqrt wrappers for powerpc32 and sparc
can reasonably be removed.  GCC already optimizes the normal case of
sqrt by generating code that uses a hardware instruction and only
calls the sqrt function if the argument was negative (if
-fno-math-errno, of course, it just uses the hardware instruction
without any check for negative argument being needed).  Thus those
wrappers will only actually get called in the case of negative
arguments, which is not a case it makes sense to optimize for.  But
even without removing the powerpc32 and sparc wrappers it should still
be possible to move to the new wrappers for static libm and new ports,
just without having those dubious architecture-specific optimizations
in static libm.

Everything said about matherr equally applies to matherrf and matherrl
(IA64-specific, undocumented), except that the structure of IA64 libm
means it won't be converted to using the new wrappers (it doesn't use
the old ones either, but its own error-handling code instead).

As with other tests of compat symbols, I expect test-matherr and
test-matherr-2 to need to become appropriately conditional once we
have a system for disabling such tests for ports too new to have the
relevant symbols.

Tested for x86_64 and x86, and with build-many-glibcs.py.

	* math/math.h [__USE_MISC] (_LIB_VERSION_TYPE): Remove.
	[__USE_MISC] (_LIB_VERSION): Likewise.
	[__USE_MISC] (struct exception): Likewise.
	[__USE_MISC] (matherr): Likewise.
	[__USE_MISC] (DOMAIN): Likewise.
	[__USE_MISC] (SING): Likewise.
	[__USE_MISC] (OVERFLOW): Likewise.
	[__USE_MISC] (UNDERFLOW): Likewise.
	[__USE_MISC] (TLOSS): Likewise.
	[__USE_MISC] (PLOSS): Likewise.
	[__USE_MISC] (HUGE): Likewise.
	[__USE_XOPEN] (MAXFLOAT): Define even if [__USE_MISC].
	* math/math-svid-compat.h: New file.
	* conform/linknamespace.pl (@whitelist): Remove matherr, matherrf
	and matherrl.
	* include/math.h [!_ISOMAC] (__matherr): Remove.
	* manual/arith.texi (FP Exceptions): Do not document matherr.
	* math/Makefile (tests): Change test-matherr to test-matherr-3.
	(tests-internal): New variable.
	(install-lib): Do not add libieee.a.
	(non-lib.a): Likewise.
	(extra-objs): Do not add libieee.a and ieee-math.o.
	(CPPFLAGS-s_lib_version.c): Remove variable.
	($(objpfx)libieee.a): Remove rule.
	($(addprefix $(objpfx), $(tests-internal)): Depend on $(libm).
	* math/ieee-math.c: Remove.
	* math/libm-test-support.c (matherr): Remove.
	* math/test-matherr.c: Use <support/test-driver.c>.  Add copyright
	and license notices.  Include <math-svid-compat.h> and
	<shlib-compat.h>.
	(matherr): Undefine as macro.  Use compat_symbol_reference.
	(_LIB_VERSION): Likewise.
	* math/test-matherr-2.c: New file.
	* math/test-matherr-3.c: Likewise.
	* sysdeps/generic/math_private.h (__kernel_standard): Remove
	declaration.
	(__kernel_standard_f): Likewise.
	(__kernel_standard_l): Likewise.
	* sysdeps/ieee754/s_lib_version.c: Do not include <math.h> or
	<math_private.h>.  Include <math-svid-compat.h>.
	(_LIB_VERSION): Undefine as macro.
	(_LIB_VERSION_INTERNAL): Always initialize to _POSIX_.  Define
	only if [LIBM_SVID_COMPAT || !defined SHARED].  If
	[LIBM_SVID_COMPAT], use compat_symbol.
	* sysdeps/ieee754/s_matherr.c: Do not include <math.h> or
	<math_private.h>.  Include <math-svid-compat.h>.
	(matherr): Undefine as macro.
	(__matherr): Define only if [LIBM_SVID_COMPAT].  Use
	compat_symbol.
	* sysdeps/ia64/fpu/libm_error.c: Include <math-svid-compat.h>.
	[_LIBC && LIBM_SVID_COMPAT] (matherrf): Use
	compat_symbol_reference.
	[_LIBC && LIBM_SVID_COMPAT] (matherrl): Likewise.
	[_LIBC && !LIBM_SVID_COMPAT] (matherrf): Define as macro.
	[_LIBC && !LIBM_SVID_COMPAT] (matherrl): Likewise.
	* sysdeps/ia64/fpu/libm_support.h: Include <math-svid-compat.h>.
	(MATHERR_D): Remove declaration.
	[!_LIBC] (_LIB_VERSION_TYPE): Likewise
	[!LIBM_BUILD] (_LIB_VERSIONIMF): Likewise.
	[LIBM_BUILD] (pmatherrf): Likewise.
	[LIBM_BUILD] (pmatherr): Likewise.
	[LIBM_BUILD] (pmatherrl): Likewise.
	(DOMAIN): Likewise.
	(SING): Likewise.
	(OVERFLOW): Likewise.
	(UNDERFLOW): Likewise.
	(TLOSS): Likewise.
	(PLOSS): Likewise.
	* sysdeps/ia64/fpu/s_matherrf.c: Include <math-svid-compat.h>.
	(__matherrf): Define only if [LIBM_SVID_COMPAT].  Use
	compat_symbol.
	* sysdeps/ia64/fpu/s_matherrl.c: Include <math-svid-compat.h>.
	(__matherrl): Define only if [LIBM_SVID_COMPAT].  Use
	compat_symbol.
	* math/lgamma-compat.h: Include <math-svid-compat.h>.
	* math/w_acos_compat.c: Likewise.
	* math/w_acosf_compat.c: Likewise.
	* math/w_acosh_compat.c: Likewise.
	* math/w_acoshf_compat.c: Likewise.
	* math/w_acoshl_compat.c: Likewise.
	* math/w_acosl_compat.c: Likewise.
	* math/w_asin_compat.c: Likewise.
	* math/w_asinf_compat.c: Likewise.
	* math/w_asinl_compat.c: Likewise.
	* math/w_atan2_compat.c: Likewise.
	* math/w_atan2f_compat.c: Likewise.
	* math/w_atan2l_compat.c: Likewise.
	* math/w_atanh_compat.c: Likewise.
	* math/w_atanhf_compat.c: Likewise.
	* math/w_atanhl_compat.c: Likewise.
	* math/w_cosh_compat.c: Likewise.
	* math/w_coshf_compat.c: Likewise.
	* math/w_coshl_compat.c: Likewise.
	* math/w_exp10_compat.c: Likewise.
	* math/w_exp10f_compat.c: Likewise.
	* math/w_exp10l_compat.c: Likewise.
	* math/w_exp2_compat.c: Likewise.
	* math/w_exp2f_compat.c: Likewise.
	* math/w_exp2l_compat.c: Likewise.
	* math/w_fmod_compat.c: Likewise.
	* math/w_fmodf_compat.c: Likewise.
	* math/w_fmodl_compat.c: Likewise.
	* math/w_hypot_compat.c: Likewise.
	* math/w_hypotf_compat.c: Likewise.
	* math/w_hypotl_compat.c: Likewise.
	* math/w_j0_compat.c: Likewise.
	* math/w_j0f_compat.c: Likewise.
	* math/w_j0l_compat.c: Likewise.
	* math/w_j1_compat.c: Likewise.
	* math/w_j1f_compat.c: Likewise.
	* math/w_j1l_compat.c: Likewise.
	* math/w_jn_compat.c: Likewise.
	* math/w_jnf_compat.c: Likewise.
	* math/w_jnl_compat.c: Likewise.
	* math/w_lgamma_main.c: Likewise.
	* math/w_lgamma_r_compat.c: Likewise.
	* math/w_lgammaf_main.c: Likewise.
	* math/w_lgammaf_r_compat.c: Likewise.
	* math/w_lgammal_main.c: Likewise.
	* math/w_lgammal_r_compat.c: Likewise.
	* math/w_log10_compat.c: Likewise.
	* math/w_log10f_compat.c: Likewise.
	* math/w_log10l_compat.c: Likewise.
	* math/w_log2_compat.c: Likewise.
	* math/w_log2f_compat.c: Likewise.
	* math/w_log2l_compat.c: Likewise.
	* math/w_log_compat.c: Likewise.
	* math/w_logf_compat.c: Likewise.
	* math/w_logl_compat.c: Likewise.
	* math/w_pow_compat.c: Likewise.
	* math/w_powf_compat.c: Likewise.
	* math/w_powl_compat.c: Likewise.
	* math/w_remainder_compat.c: Likewise.
	* math/w_remainderf_compat.c: Likewise.
	* math/w_remainderl_compat.c: Likewise.
	* math/w_scalb_compat.c: Likewise.
	* math/w_scalbf_compat.c: Likewise.
	* math/w_scalbl_compat.c: Likewise.
	* math/w_sinh_compat.c: Likewise.
	* math/w_sinhf_compat.c: Likewise.
	* math/w_sinhl_compat.c: Likewise.
	* math/w_sqrt_compat.c: Likewise.
	* math/w_sqrtf_compat.c: Likewise.
	* math/w_sqrtl_compat.c: Likewise.
	* math/w_tgamma_compat.c: Likewise.
	* math/w_tgammaf_compat.c: Likewise.
	* math/w_tgammal_compat.c: Likewise.
	* sysdeps/ieee754/dbl-64/w_exp_compat.c: Likewise.
	* sysdeps/ieee754/flt-32/w_expf_compat.c: Likewise.
	* sysdeps/ieee754/k_standard.c: Likewise.
	* sysdeps/ieee754/k_standardf.c: Likewise.
	* sysdeps/ieee754/k_standardl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/w_expl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/w_expl_compat.c: Likewise.
	* sysdeps/ieee754/ldbl-96/w_expl_compat.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt_compat.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf_compat.S: Likewise.
	* sysdeps/powerpc/powerpc32/power5/fpu/w_sqrt_compat.S: Likewise.
	* sysdeps/powerpc/powerpc32/power5/fpu/w_sqrtf_compat.S: Likewise.
	* sysdeps/sparc/sparc32/fpu/w_sqrt_compat.S: Likewise.
	* sysdeps/sparc/sparc32/fpu/w_sqrtf_compat.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrt_compat-vis3.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/w_sqrtf_compat-vis3.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrt_compat.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/w_sqrtf_compat.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/w_sqrt_compat.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/w_sqrtf_compat.S: Likewise.
 2017-08-21 17:45:10 +00:00
Alan Modra
0572433b5b PowerPC64 ELFv2 PPC64_OPT_LOCALENTRY 
ELFv2 functions with localentry:0 are those with a single entry point,
ie. global entry == local entry, that have no requirement on r2 or
r12 and guarantee r2 is unchanged on return.  Such an external
function can be called via the PLT without saving r2 or restoring it
on return, avoiding a common load-hit-store for small functions.

This patch implements the ld.so changes necessary for this
optimization.  ld.so needs to check that an optimized plt call
sequence is in fact calling a function implemented with localentry:0,
end emit a fatal error otherwise.

The elf/testobj6.c change is to stop "error while loading shared
libraries: expected localentry:0 `preload'" when running
elf/preloadtest, which we'd get otherwise.

	* elf/elf.h (PPC64_OPT_LOCALENTRY): Define.
	* sysdeps/alpha/dl-machine.h (elf_machine_fixup_plt): Add
	refsym and sym parameters.  Adjust callers.
	* sysdeps/aarch64/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/arm/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/generic/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/hppa/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/i386/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/ia64/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/m68k/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/microblaze/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/mips/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/nios2/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_fixup_plt):
	Likewise.
	* sysdeps/s390/s390-32/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/s390/s390-64/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/sh/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/sparc/sparc64/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/tile/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/x86_64/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/powerpc/powerpc64/dl-machine.c (_dl_error_localentry): New.
	(_dl_reloc_overflow): Increase buffser size.  Formatting.
	* sysdeps/powerpc/powerpc64/dl-machine.h (ppc64_local_entry_offset):
	Delete reloc param, add refsym and sym.  Check optimized plt
	call stubs for localentry:0 functions.  Adjust callers.
	(elf_machine_fixup_plt, elf_machine_plt_conflict): Add refsym
	and sym parameters.  Adjust callers.
	(_dl_reloc_overflow): Move attribute.
	(_dl_error_localentry): Declare.
	* elf/dl-runtime.c (_dl_fixup): Save original sym.  Pass
	refsym and sym to elf_machine_fixup_plt.
	* elf/testobj6.c (preload): Call printf.
 2017-06-14 10:47:25 +09:30
Siddhesh Poyarekar
511c5a1087 Make LD_HWCAP_MASK usable for static binaries 
The LD_HWCAP_MASK environment variable was ignored in static binaries,
which is inconsistent with the behaviour of dynamically linked
binaries.  This seems to have been because of the inability of
ld_hwcap_mask being read early enough to influence anything but now
that it is in tunables, the mask is usable in static binaries as well.

This feature is important for aarch64, which relies on HWCAP_CPUID
being masked out to disable multiarch.  A sanity test on x86_64 shows
that there are no failures.  Likewise for aarch64.

	* elf/dl-hwcaps.h [HAVE_TUNABLES]: Always read hwcap_mask.
	* sysdeps/sparc/sparc32/dl-machine.h [HAVE_TUNABLES]:
	Likewise.
	* sysdeps/x86/cpu-features.c (init_cpu_features): Always set
	up hwcap and hwcap_mask.
 2017-06-07 11:11:40 +05:30
Siddhesh Poyarekar
ff08fc59e3 tunables: Use glibc.tune.hwcap_mask tunable instead of _dl_hwcap_mask 
Drop _dl_hwcap_mask when building with tunables.  This completes the
transition of hwcap_mask reading from _dl_hwcap_mask to tunables.

	* elf/dl-hwcaps.h: New file.
	* elf/dl-hwcaps.c: Include it.
	(_dl_important_hwcaps)[HAVE_TUNABLES]: Read and update
	glibc.tune.hwcap_mask.
	* elf/dl-cache.c: Include dl-hwcaps.h.
	(_dl_load_cache_lookup)[HAVE_TUNABLES]: Read
	glibc.tune.hwcap_mask.
	* sysdeps/sparc/sparc32/dl-machine.h: Likewise.
	* elf/dl-support.c (_dl_hwcap2)[HAVE_TUNABLES]: Drop
	_dl_hwcap_mask.
	* elf/rtld.c (rtld_global_ro)[HAVE_TUNABLES]: Drop
	_dl_hwcap_mask.
	(process_envvars)[HAVE_TUNABLES]: Likewise.
	* sysdeps/generic/ldsodefs.h (rtld_global_ro)[HAVE_TUNABLES]:
	Likewise.
	* sysdeps/x86/cpu-features.c (init_cpu_features): Don't
	initialize dl_hwcap_mask when tunables are enabled.
 2017-06-07 11:11:38 +05:30
Stefan Liebler
12d2dd7060 Optimize generic spinlock code and use C11 like atomic macros. 
This patch optimizes the generic spinlock code.

The type pthread_spinlock_t is a typedef to volatile int on all archs.
Passing a volatile pointer to the atomic macros which are not mapped to the
C11 atomic builtins can lead to extra stores and loads to stack if such
a macro creates a temporary variable by using "__typeof (*(mem)) tmp;".
Thus, those macros which are used by spinlock code - atomic_exchange_acquire,
atomic_load_relaxed, atomic_compare_exchange_weak - have to be adjusted.
According to the comment from  Szabolcs Nagy, the type of a cast expression is
unqualified (see http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_423.htm):
__typeof ((__typeof (*(mem)) *(mem)) tmp;
Thus from spinlock perspective the variable tmp is of type int instead of
type volatile int.  This patch adjusts those macros in include/atomic.h.
With this construct GCC >= 5 omits the extra stores and loads.

The atomic macros are replaced by the C11 like atomic macros and thus
the code is aligned to it.  The pthread_spin_unlock implementation is now
using release memory order instead of sequentially consistent memory order.
The issue with passed volatile int pointers applies to the C11 like atomic
macros as well as the ones used before.

I've added a glibc_likely hint to the first atomic exchange in
pthread_spin_lock in order to return immediately to the caller if the lock is
free.  Without the hint, there is an additional jump if the lock is free.

I've added the atomic_spin_nop macro within the loop of plain reads.
The plain reads are also realized by C11 like atomic_load_relaxed macro.

The new define ATOMIC_EXCHANGE_USES_CAS determines if the first try to acquire
the spinlock in pthread_spin_lock or pthread_spin_trylock is an exchange
or a CAS.  This is defined in atomic-machine.h for all architectures.

The define SPIN_LOCK_READS_BETWEEN_CMPXCHG is now removed.
There is no technical reason for throwing in a CAS every now and then,
and so far we have no evidence that it can improve performance.
If that would be the case, we have to adjust other spin-waiting loops
elsewhere, too!  Using a CAS loop without plain reads is not a good idea
on many targets and wasn't used by one.  Thus there is now no option to
do so.

Architectures are now using the generic spinlock automatically if they
do not provide an own implementation.  Thus the pthread_spin_lock.c files
in sysdeps folder are deleted.

ChangeLog:

	* NEWS: Mention new spinlock implementation.
	* include/atomic.h:
	(__atomic_val_bysize): Cast type to omit volatile qualifier.
	(atomic_exchange_acq): Likewise.
	(atomic_load_relaxed): Likewise.
	(ATOMIC_EXCHANGE_USES_CAS): Check definition.
	* nptl/pthread_spin_init.c (pthread_spin_init):
	Use atomic_store_relaxed.
	* nptl/pthread_spin_lock.c (pthread_spin_lock):
	Use C11-like atomic macros.
	* nptl/pthread_spin_trylock.c (pthread_spin_trylock):
	Likewise.
	* nptl/pthread_spin_unlock.c (pthread_spin_unlock):
	Use atomic_store_release.
	* sysdeps/aarch64/nptl/pthread_spin_lock.c: Delete File.
	* sysdeps/arm/nptl/pthread_spin_lock.c: Likewise.
	* sysdeps/hppa/nptl/pthread_spin_lock.c: Likewise.
	* sysdeps/m68k/nptl/pthread_spin_lock.c: Likewise.
	* sysdeps/microblaze/nptl/pthread_spin_lock.c: Likewise.
	* sysdeps/mips/nptl/pthread_spin_lock.c: Likewise.
	* sysdeps/nios2/nptl/pthread_spin_lock.c: Likewise.
	* sysdeps/aarch64/atomic-machine.h (ATOMIC_EXCHANGE_USES_CAS): Define.
	* sysdeps/alpha/atomic-machine.h: Likewise.
	* sysdeps/arm/atomic-machine.h: Likewise.
	* sysdeps/i386/atomic-machine.h: Likewise.
	* sysdeps/ia64/atomic-machine.h: Likewise.
	* sysdeps/m68k/coldfire/atomic-machine.h: Likewise.
	* sysdeps/m68k/m680x0/m68020/atomic-machine.h: Likewise.
	* sysdeps/microblaze/atomic-machine.h: Likewise.
	* sysdeps/mips/atomic-machine.h: Likewise.
	* sysdeps/powerpc/powerpc32/atomic-machine.h: Likewise.
	* sysdeps/powerpc/powerpc64/atomic-machine.h: Likewise.
	* sysdeps/s390/atomic-machine.h: Likewise.
	* sysdeps/sparc/sparc32/atomic-machine.h: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/atomic-machine.h: Likewise.
	* sysdeps/sparc/sparc64/atomic-machine.h: Likewise.
	* sysdeps/tile/tilegx/atomic-machine.h: Likewise.
	* sysdeps/tile/tilepro/atomic-machine.h: Likewise.
	* sysdeps/unix/sysv/linux/hppa/atomic-machine.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/atomic-machine.h: Likewise.
	* sysdeps/unix/sysv/linux/nios2/atomic-machine.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/atomic-machine.h: Likewise.
	* sysdeps/x86_64/atomic-machine.h: Likewise.
 2017-06-06 09:41:56 +02:00
Siddhesh Poyarekar
d26db8fbb4 Remove useless comment from sysdeps/sparc/sparc32/dl-machine.h 
David Miller has not been shot yet AFAIK (yes, I googled for any news
that may seem relevant and I poked him on twitter some days ago) so
either nobody uses SPARC or the code is correct or nobody read the
instructions in the comment to shoot him.  In all of those cases the
comment is clearly not useful, so getting rid of it.
 2017-05-23 01:10:29 +05:30
Joseph Myers
e1d6e08dd6 Remove useless SPARC signbit aliases. 
The SPARC implementations of __signbit* functions have aliases
signbit, signbitf, signbitl.  These are useless, as they aren't
exported from the shared libraries (only the __signbit* functions are
exported, to be used by the type-generic signbit macro with older
compilers).  This patch removes the useless aliases.

Tested (compilation only) with build-many-glibcs.py for
sparc64-linux-gnu and sparcv9-linux-gnu.

	* sysdeps/sparc/sparc32/fpu/s_signbit.S (signbit): Remove alias.
	(signbitf): Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_signbit.S (signbit):
	Likewise.
	(signbitl): Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_signbitf.S (signbitf):
	Likewise.
	* sysdeps/sparc/sparc64/fpu/s_signbit.S (signbit): Likewise.
	(signbitl): Likewise.
	* sysdeps/sparc/sparc64/fpu/s_signbitf.S (signbitf): Likewise.
 2017-05-12 16:37:12 +00:00
Adhemerval Zanella
bdc543e338 sparc: Fix .udiv plt on libc 
With the removal of divdi3 object from sparcv9-linux-gnu build, its
definition came from libgcc and its functions internall calls .udiv.
Since glibc also exports these symbols for compatibility reasons, it
will end up creating PLT calls internally in libc.so.

To avoid it, this patch uses the linker option --wrap to replace all
the internal libc.so .udiv calls to the wrapper __wrap_.udiv. Along
with strong alias in the udiv implementations, it makes linker do
local calls.

Checked on sparcv9-linux-gnu.

	* sysdeps/sparc/sparc32/Makefile (libc.so-gnulib): New rule.
	* sysdeps/sparc/sparc32/sparcv8/udiv.S (.udiv): Make a strong_alias
	to __wrap_.udiv.
	* sysdeps/sparc/sparc32/sparcv9/udiv.S (.udiv): Likewise.
	* sysdeps/sparc/sparc32/udiv.S (.udiv): Likewise.
 2017-04-06 15:14:44 -03:00
David S. Miller
33d7e138ca sparc: Remove optimized math routines which cause testsuite failures. 
famx{,f}/fmin{,f} and 32-bit lrint cause math testsuite failures
either because they generate incorrect results or they fail to signal
the proper exceptions.

	* sysdeps/sparc/sparc64/fpu/multiarch/s_fmax-vis3.S: Remove file.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_fmax.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_fmaxf-vis3.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_fmaxf.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_fmin-vis3.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_fmin.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_fminf-vis3.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_fminf.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/Makefile
	(libm-sysdep_routines): Update.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_fmax.S: Remove file.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_fmaxf.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_fmin.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_fminf.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/s_lrint.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/s_fmax.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/s_fmaxf.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/s_fmin.S: Likewise.
	* sysdeps/sparc/sparc64/fpu/s_fminf.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fmax-vis3.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fmax.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fmaxf-vis3.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fmaxf.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fmin-vis3.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fmin.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fminf-vis3.S:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fminf.S: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
	(libm-sysdep_routines): Update.
 2017-02-03 17:55:25 -08:00
Gabriel F. T. Gomes
f67d78192c Move wrappers to libm-compat-calls-auto 
This commit moves one step towards the deprecation of wrappers that
use _LIB_VERSION / matherr / __kernel_standard functionality, by
adding the suffix '_compat' to their filenames and adjusting Makefiles
and #includes accordingly.

New template wrappers that do not use such functionality will be added
by future patches and will be first used by the float128 wrappers.
 2017-01-04 16:25:04 -02:00
Joseph Myers
bfff8b1bec Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Joseph Myers
2314a29b62 Add missing hidden_def (__sigsetjmp). 
This patch adds the missing hidden_def (__sigsetjmp) on various
architectures that were failing to build (as noted in
<https://sourceware.org/ml/libc-alpha/2016-11/msg01124.html>).

Tested (compilation only) with build-many-glibcs.py.

	* sysdeps/alpha/setjmp.S (__sigsetjmp): Use hidden_def.
	* sysdeps/hppa/setjmp.S (__sigsetjmp): Likewise.
	* sysdeps/mips/mips64/setjmp.S (__sigsetjmp): Likewise.
	* sysdeps/mips/setjmp.S (__sigsetjmp): Likewise.
	* sysdeps/sh/sh3/setjmp.S (__sigsetjmp): Likewise.
	* sysdeps/sh/sh4/setjmp.S (__sigsetjmp): Likewise.
	* sysdeps/sparc/sparc32/setjmp.S (__sigsetjmp): Likewise.
	* sysdeps/tile/setjmp.S (__sigsetjmp): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/setjmp.S (__sigsetjmp):
	Likewise.
 2016-12-01 20:49:25 +00:00
Steve Ellcey
d060cd002d Define wordsize.h macros everywhere 
* bits/wordsize.h: Add documentation.
	* sysdeps/aarch64/bits/wordsize.h : New file
	* sysdeps/generic/stdint.h (PTRDIFF_MIN, PTRDIFF_MAX): Update
	definitions.
	(SIZE_MAX): Change ifdef to if in __WORDSIZE32_SIZE_ULONG check.
	* sysdeps/gnu/bits/utmp.h (__WORDSIZE_TIME64_COMPAT32): Check
	with #if instead of #ifdef.
	* sysdeps/gnu/bits/utmpx.h (__WORDSIZE_TIME64_COMPAT32): Ditto.
	* sysdeps/mips/bits/wordsize.h (__WORDSIZE32_SIZE_ULONG,
	__WORDSIZE32_PTRDIFF_LONG, __WORDSIZE_TIME64_COMPAT32):
	Add or change defines.
	* sysdeps/powerpc/powerpc32/bits/wordsize.h: Likewise.
	* sysdeps/powerpc/powerpc64/bits/wordsize.h: Likewise.
	* sysdeps/s390/s390-32/bits/wordsize.h: Likewise.
	* sysdeps/s390/s390-64/bits/wordsize.h: Likewise.
	* sysdeps/sparc/sparc32/bits/wordsize.h: Likewise.
	* sysdeps/sparc/sparc64/bits/wordsize.h: Likewise.
	* sysdeps/tile/tilegx/bits/wordsize.h: Likewise.
	* sysdeps/tile/tilepro/bits/wordsize.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/bits/wordsize.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/bits/wordsize.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/wordsize.h: Likewise.
	* sysdeps/wordsize-32/bits/wordsize.h: Likewise.
	* sysdeps/wordsize-64/bits/wordsize.h: Likewise.
	* sysdeps/x86/bits/wordsize.h: Likewise.
 2016-11-04 09:37:44 -07:00
Florian Weimer
8837917cf1 Remove remnants of .og patterns 
This was used by --enable-omitfp, and the bulk of it was removed in this
commit:

commit bdeba1354b
Author: Ulrich Drepper <drepper@gmail.com>
Date:   Sat Jan 7 11:29:31 2012 -0500

    Remove --enable-omitfp support
 2016-09-20 12:18:13 +02:00
Adhemerval Zanella
09cb278539 nptl: Consolidate sem_init implementations 
Current sparc32 sem_init and default one only differ on sem.newsem.pad
initialization.  This patch removes sparc32 and sparc32v9 sem_init arch
specific implementation and set sparc32 to use nptl default one.
The default implementation sets the required sem.newsem.pad to 0 (which
is ununsed in other architectures).

I checked on i686 and a sparc32v9 build.

        * nptl/sem_init.c (sem_init): Init pad value to 0.
        * sysdeps/sparc/sparc32/sem_init.c: Remove file.
        * sysdeps/sparc/sparc32/sparcv9/sem_init.c: Likewise.
 2016-09-15 16:31:50 -03:00
Adhemerval Zanella
49ad334ab1 nptl: Remove sparc sem_wait 
This patch removes the sparc32 sem_wait.c implementation since it is
identical to default nptl one.  The sparcv9 is no longer required with
the removal.

Checked with a sparcv9 build.

	* sysdeps/sparc/sparc32/sem_wait.c: Remove file.
	* sysdeps/sparc/sparc32/sparcv9/sem_wait.c: Likewise.
 2016-09-15 11:14:30 -03:00