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Author SHA1 Message Date
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
Joseph Myers
e44acb2063 Use floor functions not __floor functions in glibc libm. 
Similar to the changes that were made to call sqrt functions directly
in glibc, instead of __ieee754_sqrt variants, so that the compiler
could inline them automatically without needing special inline
definitions in lots of math_private.h headers, this patch makes libm
code call floor functions directly instead of __floor variants,
removing the inlines / macros for x86_64 (SSE4.1) and powerpc
(POWER5).

The redirection used to ensure that __ieee754_sqrt does still get
called when the compiler doesn't inline a built-in function expansion
is refactored so it can be applied to other functions; the refactoring
is arranged so it's not limited to unary functions either (it would be
reasonable to use this mechanism for copysign - removing the inline in
math_private_calls.h but also eliminating unnecessary local PLT entry
use in the cases (powerpc soft-float and e500v1, for IBM long double)
where copysign calls don't get inlined).

The point of this change is that more architectures can get floor
calls inlined where they weren't previously (AArch64, for example),
without needing special inline definitions in their math_private.h,
and existing such definitions in math_private.h headers can be
removed.

Note that it's possible that in some cases an inline may be used where
an IFUNC call was previously used - this is the case on x86_64, for
example.  I think the direct calls to floor are still appropriate; if
there's any significant performance cost from inline SSE2 floor
instead of an IFUNC call ending up with SSE4.1 floor, that indicates
that either the function should be doing something else that's faster
than using floor at all, or it should itself have IFUNC variants, or
that the compiler choice of inlining for generic tuning should change
to allow for the possibility that, by not inlining, an SSE4.1 IFUNC
might be called at runtime - but not that glibc should avoid calling
floor internally.  (After all, all the same considerations would apply
to any user program calling floor, where it might either be inlined or
left as an out-of-line call allowing for a possible IFUNC.)

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):
	New macro.
	[!_ISOMAC && !(__FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__ > 0)
	&& !NO_MATH_REDIRECT] (MATH_REDIRECT_LDBL): Likewise.
	[!_ISOMAC && !(__FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__ > 0)
	&& !NO_MATH_REDIRECT] (MATH_REDIRECT_F128): Likewise.
	[!_ISOMAC && !(__FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__ > 0)
	&& !NO_MATH_REDIRECT] (MATH_REDIRECT_UNARY_ARGS): Likewise.
	[!_ISOMAC && !(__FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__ > 0)
	&& !NO_MATH_REDIRECT] (sqrt): Redirect using MATH_REDIRECT.
	[!_ISOMAC && !(__FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__ > 0)
	&& !NO_MATH_REDIRECT] (floor): Likewise.
	* sysdeps/aarch64/fpu/s_floor.c: Define NO_MATH_REDIRECT before
	header inclusion.
	* sysdeps/aarch64/fpu/s_floorf.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_floor.c: Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_floor.c: Likewise.
	* sysdeps/ieee754/float128/s_floorf128.c: Likewise.
	* sysdeps/ieee754/flt-32/s_floorf.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_floorl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_floorl.c: Likewise.
	* sysdeps/m68k/m680x0/fpu/s_floor_template.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_floor.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_floorf.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_floor.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_floorf.c: Likewise.
	* sysdeps/riscv/rv64/rvd/s_floor.c: Likewise.
	* sysdeps/riscv/rvf/s_floorf.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_floor.c: Likewise.
	* sysdeps/sparc/sparc64/fpu/multiarch/s_floorf.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_floor.c: Likewise.
	* sysdeps/x86_64/fpu/multiarch/s_floorf.c: Likewise.
	* sysdeps/powerpc/fpu/math_private.h [_ARCH_PWR5X] (__floor):
	Remove macro.
	[_ARCH_PWR5X] (__floorf): Likewise.
	* sysdeps/x86_64/fpu/math_private.h [__SSE4_1__] (__floor): Remove
	inline function.
	[__SSE4_1__] (__floorf): Likewise.
	* math/w_lgamma_main.c (LGFUNC (__lgamma)): Use floor functions
	instead of __floor variants.
	* math/w_lgamma_r_compat.c (__lgamma_r): Likewise.
	* math/w_lgammaf_main.c (LGFUNC (__lgammaf)): Likewise.
	* math/w_lgammaf_r_compat.c (__lgammaf_r): Likewise.
	* math/w_lgammal_main.c (LGFUNC (__lgammal)): Likewise.
	* math/w_lgammal_r_compat.c (__lgammal_r): Likewise.
	* math/w_tgamma_compat.c (__tgamma): Likewise.
	* math/w_tgamma_template.c (M_DECL_FUNC (__tgamma)): Likewise.
	* math/w_tgammaf_compat.c (__tgammaf): Likewise.
	* math/w_tgammal_compat.c (__tgammal): Likewise.
	* sysdeps/ieee754/dbl-64/e_lgamma_r.c (sin_pi): Likewise.
	* sysdeps/ieee754/dbl-64/k_rem_pio2.c (__kernel_rem_pio2):
	Likewise.
	* sysdeps/ieee754/dbl-64/lgamma_neg.c (__lgamma_neg): Likewise.
	* sysdeps/ieee754/flt-32/e_lgammaf_r.c (sin_pif): Likewise.
	* sysdeps/ieee754/flt-32/lgamma_negf.c (__lgamma_negf): Likewise.
	* sysdeps/ieee754/ldbl-128/e_lgammal_r.c (__ieee754_lgammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-128/e_powl.c (__ieee754_powl): Likewise.
	* sysdeps/ieee754/ldbl-128/lgamma_negl.c (__lgamma_negl):
	Likewise.
	* sysdeps/ieee754/ldbl-128/s_expm1l.c (__expm1l): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_lgammal_r.c (__ieee754_lgammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_powl.c (__ieee754_powl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/lgamma_negl.c (__lgamma_negl):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_expm1l.c (__expm1l): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_truncl.c (__truncl): Likewise.
	* sysdeps/ieee754/ldbl-96/e_lgammal_r.c (sin_pi): Likewise.
	* sysdeps/ieee754/ldbl-96/lgamma_negl.c (__lgamma_negl): Likewise.
	* sysdeps/powerpc/power5+/fpu/s_modf.c (__modf): Likewise.
	* sysdeps/powerpc/power5+/fpu/s_modff.c (__modff): Likewise.
 2018-09-14 13:09:01 +00:00
Joseph Myers
70e2ba332f Do not include fenv_private.h in math_private.h. 
Continuing the clean-up related to the catch-all math_private.h
header, this patch stops math_private.h from including fenv_private.h.
Instead, fenv_private.h is included directly from those users of
math_private.h that also used interfaces from fenv_private.h.  No
attempt is made to remove unused includes of math_private.h, but that
is a natural followup.

(However, since math_private.h sometimes defines optimized versions of
math.h interfaces or __* variants thereof, as well as defining its own
interfaces, I think it might make sense to get all those optimized
versions included from include/math.h, not requiring a separate header
at all, before eliminating unused math_private.h includes - that
avoids a file quietly becoming less-optimized if someone adds a call
to one of those interfaces without restoring a math_private.h include
to that file.)

There is still a pitfall that if code uses plain fe* and __fe*
interfaces, but only includes fenv.h and not fenv_private.h or (before
this patch) math_private.h, it will compile on platforms with
exceptions and rounding modes but not get the optimized versions (and
possibly not compile) on platforms without exception and rounding mode
support, so making it easy to break the build for such platforms
accidentally.

I think it would be most natural to move the inlines / macros for fe*
and __fe* in the case of no exceptions and rounding modes into
include/fenv.h, so that all code including fenv.h with _ISOMAC not
defined automatically gets them.  Then fenv_private.h would be purely
the header for the libc_fe*, SET_RESTORE_ROUND etc. internal
interfaces and the risk of breaking the build on other platforms than
the one you tested on because of a missing fenv_private.h include
would be much reduced (and there would be some unused fenv_private.h
includes to remove along with unused math_private.h includes).

Tested for x86_64 and x86, and tested with build-many-glibcs.py that
installed stripped shared libraries are unchanged by this patch.

	* sysdeps/generic/math_private.h: Do not include <fenv_private.h>.
	* math/fromfp.h: Include <fenv_private.h>.
	* math/math-narrow.h: Likewise.
	* math/s_cexp_template.c: Likewise.
	* math/s_csin_template.c: Likewise.
	* math/s_csinh_template.c: Likewise.
	* math/s_ctan_template.c: Likewise.
	* math/s_ctanh_template.c: Likewise.
	* math/s_iseqsig_template.c: Likewise.
	* math/w_acos_compat.c: Likewise.
	* math/w_acosf_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_ilogb_template.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_llogb_template.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.
	* sysdeps/aarch64/fpu/feholdexcpt.c: Likewise.
	* sysdeps/aarch64/fpu/fesetround.c: Likewise.
	* sysdeps/aarch64/fpu/fgetexcptflg.c: Likewise.
	* sysdeps/aarch64/fpu/ftestexcept.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_atan2.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_exp.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_exp2.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_gamma_r.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_jn.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_pow.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_remainder.c: Likewise.
	* sysdeps/ieee754/dbl-64/e_sqrt.c: Likewise.
	* sysdeps/ieee754/dbl-64/gamma_product.c: Likewise.
	* sysdeps/ieee754/dbl-64/lgamma_neg.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_atan.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_fma.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_fmaf.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_llrint.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_llround.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_lrint.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_lround.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_nearbyint.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_sin.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_sincos.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_tan.c: Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c: Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c: Likewise.
	* sysdeps/ieee754/dbl-64/x2y2m1.c: Likewise.
	* sysdeps/ieee754/float128/float128_private.h: Likewise.
	* sysdeps/ieee754/flt-32/e_gammaf_r.c: Likewise.
	* sysdeps/ieee754/flt-32/e_j1f.c: Likewise.
	* sysdeps/ieee754/flt-32/e_jnf.c: Likewise.
	* sysdeps/ieee754/flt-32/lgamma_negf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_llrintf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_llroundf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_lrintf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_lroundf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_nearbyintf.c: Likewise.
	* sysdeps/ieee754/k_standardl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_expl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_gammal_r.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_j1l.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_jnl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/gamma_productl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/lgamma_negl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_fmal.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_llrintl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_llroundl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_lrintl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_lroundl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_nearbyintl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/x2y2m1l.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_expl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_j1l.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_jnl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/lgamma_negl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fmal.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_llrintl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_llroundl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_lrintl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_lroundl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_rintl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/x2y2m1l.c: Likewise.
	* sysdeps/ieee754/ldbl-96/e_gammal_r.c: Likewise.
	* sysdeps/ieee754/ldbl-96/e_jnl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/gamma_productl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/lgamma_negl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fma.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fmal.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_llrintl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_llroundl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_lrintl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_lroundl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/x2y2m1l.c: Likewise.
	* sysdeps/powerpc/fpu/e_sqrt.c: Likewise.
	* sysdeps/powerpc/fpu/e_sqrtf.c: Likewise.
	* sysdeps/riscv/rv64/rvd/s_ceil.c: Likewise.
	* sysdeps/riscv/rv64/rvd/s_floor.c: Likewise.
	* sysdeps/riscv/rv64/rvd/s_nearbyint.c: Likewise.
	* sysdeps/riscv/rv64/rvd/s_round.c: Likewise.
	* sysdeps/riscv/rv64/rvd/s_roundeven.c: Likewise.
	* sysdeps/riscv/rv64/rvd/s_trunc.c: Likewise.
	* sysdeps/riscv/rvd/s_finite.c: Likewise.
	* sysdeps/riscv/rvd/s_fmax.c: Likewise.
	* sysdeps/riscv/rvd/s_fmin.c: Likewise.
	* sysdeps/riscv/rvd/s_fpclassify.c: Likewise.
	* sysdeps/riscv/rvd/s_isinf.c: Likewise.
	* sysdeps/riscv/rvd/s_isnan.c: Likewise.
	* sysdeps/riscv/rvd/s_issignaling.c: Likewise.
	* sysdeps/riscv/rvf/fegetround.c: Likewise.
	* sysdeps/riscv/rvf/feholdexcpt.c: Likewise.
	* sysdeps/riscv/rvf/fesetenv.c: Likewise.
	* sysdeps/riscv/rvf/fesetround.c: Likewise.
	* sysdeps/riscv/rvf/feupdateenv.c: Likewise.
	* sysdeps/riscv/rvf/fgetexcptflg.c: Likewise.
	* sysdeps/riscv/rvf/ftestexcept.c: Likewise.
	* sysdeps/riscv/rvf/s_ceilf.c: Likewise.
	* sysdeps/riscv/rvf/s_finitef.c: Likewise.
	* sysdeps/riscv/rvf/s_floorf.c: Likewise.
	* sysdeps/riscv/rvf/s_fmaxf.c: Likewise.
	* sysdeps/riscv/rvf/s_fminf.c: Likewise.
	* sysdeps/riscv/rvf/s_fpclassifyf.c: Likewise.
	* sysdeps/riscv/rvf/s_isinff.c: Likewise.
	* sysdeps/riscv/rvf/s_isnanf.c: Likewise.
	* sysdeps/riscv/rvf/s_issignalingf.c: Likewise.
	* sysdeps/riscv/rvf/s_nearbyintf.c: Likewise.
	* sysdeps/riscv/rvf/s_roundevenf.c: Likewise.
	* sysdeps/riscv/rvf/s_roundf.c: Likewise.
	* sysdeps/riscv/rvf/s_truncf.c: Likewise.
 2018-09-03 21:09:04 +00:00
Joseph Myers
ff6b24501f Split fenv_private.h out of math_private.h more consistently. 
On some architectures, the parts of math_private.h relating to the
floating-point environment are in a separate file fenv_private.h
included from math_private.h.  As this is purely an
architecture-specific convention used by several architectures,
however, all such architectures still need their own math_private.h,
even if it has nothing to do beyond #include <fenv_private.h> and
peculiarity of including the i386 file directly instead of having a
shared file in sysdeps/x86.

This patch makes the fenv_private.h name an architecture-independent
convention in glibc.  The include of fenv_private.h from
math_private.h becomes architecture-independent (until callers are
updated to include fenv_private.h directly so the include from
math_private.h is no longer needed).  Some architecture math_private.h
headers are removed if no longer needed, or renamed to fenv_private.h
if all they define belongs in that header; architecture fenv_private.h
headers now do require #include_next <fenv_private.h>.  The i386
fenv_private.h file moves to sysdeps/x86/fpu/ to reflect how it is
actually shared with x86_64.  The generic math_private.h gets a new
include of <stdbool.h>, as needed for bool in some prototypes in that
header (previously that was indirectly included via include/fenv.h,
which now only gets included too late in math_private.h, after those
prototypes).

Tested for x86_64 and x86, and tested with build-many-glibcs.py that
installed stripped shared libraries are unchanged by the patch.

	* sysdeps/aarch64/fpu/fenv_private.h: New file.  Based on ....
	* sysdeps/aarch64/fpu/math_private.h: ... this file.  All contents
	moved to fenv_private.h except for ...
	(TOINT_INTRINSICS): Kept in math_private.h.
	(roundtoint): Likewise.
	(converttoint): Likewise.
	* sysdeps/arm/fenv_private.h: Change multiple-include guard to
	[ARM_FENV_PRIVATE_H].  Include next <fenv_private.h>.
	* sysdeps/arm/math_private.h: Remove.
	* sysdeps/generic/fenv_private.h: New file.  Contents moved from
	....
	* sysdeps/generic/math_private.h: ... this file.  Include
	<stdbool.h>.  Do not include <fenv.h> or <get-rounding-mode.h>.
	Include <fenv_private.h>.  Remove functions and macros moved to
	fenv_private.h.
	* sysdeps/i386/fpu/math_private.h: Remove.
	* sysdeps/mips/math_private.h: Move to ....
	* sysdeps/mips/fpu/fenv_private.h: ... here.  Change
	multiple-include guard to [MIPS_FENV_PRIVATE_H].  Remove
	[__mips_hard_float] conditional.  Include next <fenv_private.h>.
	* sysdeps/powerpc/fpu/fenv_private.h: Change multiple-include
	guard to [POWERPC_FENV_PRIVATE_H].  Include next <fenv_private.h>.
	* sysdeps/powerpc/fpu/math_private.h: Do not include
	<fenv_private.h>.
	* sysdeps/riscv/rvf/math_private.h: Move to ....
	* sysdeps/riscv/rvf/fenv_private.h: ... here.  Change
	multiple-include guard to [RISCV_FENV_PRIVATE_H].  Include next
	<fenv_private.h>.
	* sysdeps/sparc/fpu/fenv_private.h: Change multiple-include guard
	to [SPARC_FENV_PRIVATE_H].  Include next <fenv_private.h>.
	* sysdeps/sparc/fpu/math_private.h: Remove.
	* sysdeps/i386/fpu/fenv_private.h: Move to ....
	* sysdeps/x86/fpu/fenv_private.h: ... here.  Change
	multiple-include guard to [X86_FENV_PRIVATE_H].  Include next
	<fenv_private.h>.
	* sysdeps/x86_64/fpu/math_private.h: Do not include
	<sysdeps/i386/fpu/fenv_private.h>.
 2018-08-28 20:48:49 +00:00
Joseph Myers
895ef79e04 Move EXCEPTION_ENABLE_SUPPORTED out of math-tests.h. 
Continuing moving macros out of math-tests.h to smaller headers
following typo-proof conventions instead of using #ifndef, this patch
moves the EXCEPTION_ENABLE_SUPPORTED macro out to its own
math-tests-trap.h header.

Tested with build-many-glibcs.py.

	* sysdeps/generic/math-tests-trap.h: New file.
	* sysdeps/generic/math-tests.h: Include <math-tests-trap.h>.
	(EXCEPTION_ENABLE_SUPPORTED): Do not define here.
	* sysdeps/aarch64/math-tests.h: Remove file.
	* sysdeps/arm/math-tests.h: Likewise.
	* sysdeps/riscv/math-tests.h: Likewise.
	* sysdeps/aarch64/math-tests-trap.h: New file.
	* sysdeps/arm/math-tests-trap.h: Likewise.
	* sysdeps/riscv/math-tests-trap.h: Likewise.
 2018-08-24 19:18:16 +00:00
Joseph Myers
60bcac09c0 Move EXCEPTION_TESTS_* out of math-tests.h 
Continuing moving macros out of math-tests.h to smaller headers
following typo-proof conventions instead of using #ifndef, this patch
moves the EXCEPTION_TESTS_* macros for individual types out to their
own sysdeps header.

As with ROUNDING_TESTS_*, there is no need to define these macros if
FE_ALL_EXCEPT == 0 and the individual exception macros are undefined;
thus, math-tests-exceptions.h headers are only needed for soft-float
ARM and RISC-V, while the other cases that defined these macros do not
need to do so (and the associated math-tests.h headers are thus
removed without needing replacement by math-tests-exceptions.h
headers).

Tested with build-many-glibcs.py.

	* sysdeps/generic/math-tests-exceptions.h: New file.
	* sysdeps/generic/math-tests.h: Include <math-tests-exceptions.h>.
	(EXCEPTION_TESTS_float): Do not define here.
	(EXCEPTION_TESTS_double): Likewise.
	(EXCEPTION_TESTS_long_double): Likewise.
	(EXCEPTION_TESTS_float128): Likewise.
	* sysdeps/arm/math-tests.h [__SOFTFP__] (EXCEPTION_TESTS_float):
	Likewise.
	[__SOFTFP__] (EXCEPTION_TESTS_double): Likewise.
	[__SOFTFP__] (EXCEPTION_TESTS_long_double): Likewise.
	* sysdeps/arm/nofpu/math-tests-exceptions.h: New file.
	* sysdeps/m68k/coldfire/math-tests.h: Remove file.
	* sysdeps/mips/math-tests.h: Likewise.
	* sysdeps/nios2/math-tests.h: Likewise.
	* sysdeps/riscv/math-tests.h [!__riscv_flen]
	(EXCEPTION_TESTS_float): Do not define here.
	[!__riscv_flen] (EXCEPTION_TESTS_double): Likewise.
	[!__riscv_flen] (EXCEPTION_TESTS_long_double): Likewise.
	* sysdeps/riscv/nofpu/math-tests-exceptions.h: New file.
 2018-08-23 23:41:13 +00:00
Joseph Myers
16a25138c1 Move ROUNDING_TESTS_* out of math-tests.h. 
Continuing moving macros out of math-tests.h to smaller headers
following typo-proof conventions instead of using #ifndef, this patch
moves the ROUNDING_TESTS_* macros for individual types out to their
own sysdeps header.

In the soft-float case where FE_TONEAREST is the only rounding mode
macro defined, there is no need to define ROUNDING_TESTS_*; it is only
necessary when rounding modes macros are defined that may not be
supported at runtime.  Thus, the ROUNDING_TESTS_* definitions for some
configurations are just removed, not moved to new
math-tests-rounding.h headers; the only architectures needing
math-tests-rounding.h are those where the macros are defined in
bits/fenv.h because of the possibility of a soft-float compilation
using a hard-float glibc with the same ABI (i.e., ARM and RISC-V).

The test-*-vlen*.h headers, by using #undef, do not yet follow
typo-proof conventions (but they no longer implicitly rely on being
included before math-tests.h, and this area can always be cleaned up
further in future).

Tested with build-many-glibcs.py.

	* sysdeps/generic/math-tests-rounding.h: New file.
	* sysdeps/generic/math-tests.h: Include <math-tests-rounding.h>.
	(ROUNDING_TESTS_float): Do not define here.
	(ROUNDING_TESTS_double): Likewise.
	(ROUNDING_TESTS_long_double): Likewise.
	(ROUNDING_TESTS_float128): Likewise.
	* math/test-double-vlen2.h: Include <math-tests-rounding.h>.
	(ROUNDING_TESTS_double): Undefine before defining.
	* math/test-double-vlen4.h: Include <math-tests-rounding.h>.
	(ROUNDING_TESTS_double): Undefine before defining.
	* math/test-double-vlen8.h: Include <math-tests-rounding.h>.
	(ROUNDING_TESTS_double): Undefine before defining.
	* math/test-float-vlen16.h: Include <math-tests-rounding.h>.
	(ROUNDING_TESTS_float): Undefine before defining.
	* math/test-float-vlen4.h: Include <math-tests-rounding.h>.
	(ROUNDING_TESTS_float): Undefine before defining.
	* math/test-float-vlen8.h: Include <math-tests-rounding.h>.
	(ROUNDING_TESTS_float): Undefine before defining.
	* sysdeps/arm/nofpu/math-tests-rounding.h: New file.
	* sysdeps/arm/math-tests.h [__SOFTFP__] (ROUNDING_TESTS_float): Do
	not define here.
	[__SOFTFP__] (ROUNDING_TESTS_double): Likewise.
	[__SOFTFP__] (ROUNDING_TESTS_long_double): Likewise.
	* sysdeps/riscv/nofpu/math-tests-rounding.h: New file.
	* sysdeps/riscv/math-tests.h [!__riscv_flen]
	(ROUNDING_TESTS_float): Do not define here.
	[!__riscv_flen] (ROUNDING_TESTS_double): Likewise.
	[!__risv_flen] (ROUNDING_TESTS_long_double): Likewise.
	* sysdeps/m68k/coldfire/math-tests.h [!__mcffpu__]
	(ROUNDING_TESTS_float): Likewise.
	[!__mcffpu__] (ROUNDING_TESTS_double): Likewise.
	[!__mcffpu__] (ROUNDING_TESTS_long_double): Likewise.
	* sysdeps/mips/math-tests.h [__mips_soft_float]
	(ROUNDING_TESTS_float): Likewise.
	[__mips_soft_float] (ROUNDING_TESTS_double): Likewise.
	[__mips_soft_float] (ROUNDING_TESTS_long_double): Likewise.
	* sysdeps/nios2/math-tests.h (ROUNDING_TESTS_float): Likewise.
	(ROUNDING_TESTS_double): Likewise.
	(ROUNDING_TESTS_long_double): Likewise.
 2018-08-22 12:25:50 +00:00
Andreas Schwab
92a4cba760
RISC-V: Don't use ps_get_thread_area in libthread_db (bug 23402) 
Since RISC-V stores the thread pointer in a general register libthread_db
can just ask the debugger for the register contents instead of trying to
call ps_get_thread_area.  This enables thread debugging in gdb.

	* sysdeps/riscv/nptl/tls.h (DB_THREAD_SELF): Use REGISTER instead
	of CONST_THREAD_AREA.
 2018-08-06 12:51:59 -07:00
DJ Delorie
bb17621ab8 Regen RISC-V rvd ULPs 
* sysdeps/riscv/rv64/rvd/libm-test-ulps: Update.

Note: I regen'd these from scratch, but I'm only committing the
increases, as I only tested on hardware.  There were a few 2->1
decreases that I omitted, possibly "for now".
 2018-08-03 13:52:01 -04:00
DJ Delorie
bf41818787 RISC-V: Fix rounding save/restore bug. 
* sysdeps/riscv/rvf/math_private.h (libc_feholdexcept_setround_riscv):
Fix rounding save-restore bug.

Fixes about a hundred off-by-ULP failures in the math testsuite.
 2018-08-03 13:43:31 -04:00
Joseph Myers
46f8cf5712 Move SNAN_TESTS_PRESERVE_PAYLOAD out of math-tests.h. 
Continuing moving macros out of math-tests.h to smaller headers
following typo-proof conventions instead of using #ifndef, this patch
moves SNAN_TESTS_PRESERVE_PAYLOAD out to its own sysdeps header.

Tested with build-many-glibcs.py.

	* sysdeps/generic/math-tests-snan-payload.h: New file.
	* sysdeps/hppa/math-tests-snan-payload.h: Likewise.
	* sysdeps/mips/math-tests-snan-payload.h: Likewise.
	* sysdeps/riscv/math-tests-snan-payload.h: Likewise.
	* sysdeps/generic/math-tests.h: Include
	<math-tests-snan-payload.h>.
	(SNAN_TESTS_PRESERVE_PAYLOAD): Do not define macro here.
	* sysdeps/hppa/math-tests.h: Remove file.
	* sysdeps/mips/math-tests.h [!__mips_nan2008]
	(SNAN_TESTS_PRESERVE_PAYLOAD): Do not define macro here.
	* sysdeps/riscv/math-tests.h (SNAN_TESTS_PRESERVE_PAYLOAD):
	Likewise.
 2018-08-01 11:21:16 +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
Joseph Myers
ffec7b2740 Use x86_64 backtrace as generic version. 
No glibc configuration uses the present debug/backtrace.c, whereas
several #include the x86_64 version.  The x86_64 version is
effectively a generic one (using _Unwind_Backtrace from libgcc, which
works much more reliably than the built-in functions used by
debug/backtrace.c).  This patch moves it to debug/backtrace.c and
removes all the #includes of the x86_64 version from other
architectures which are no longer required.

I do not know whether all the other architecture-specific backtrace
implementations that are based on _Unwind_Backtrace are required, or
whether, where their differences from the generic version do something
useful, suitable hooks could be added to the generic version to reduce
the duplication involved.

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

	* sysdeps/x86_64/backtrace.c: Move to ....
	* debug/backtrace.c: ... here.
	* sysdeps/aarch64/backtrace.c: Remove file.
	* sysdeps/alpha/backtrace.c: Likewise.
	* sysdeps/hppa/backtrace.c: Likewise.
	* sysdeps/ia64/backtrace.c: Likewise.
	* sysdeps/mips/backtrace.c: Likewise.
	* sysdeps/nios2/backtrace.c: Likewise.
	* sysdeps/riscv/backtrace.c: Likewise.
	* sysdeps/sh/backtrace.c: Likewise.
	* sysdeps/tile/backtrace.c: Likewise.
 2018-03-21 17:25:30 +00:00
Samuel Thibault
a5df0318ef hurd: add gscope support 
* elf/dl-support.c [!THREAD_GSCOPE_IN_TCB] (_dl_thread_gscope_count):
Define variable.
* sysdeps/generic/ldsodefs.h [!THREAD_GSCOPE_IN_TCB] (struct
rtld_global): Add _dl_thread_gscope_count member.
* sysdeps/mach/hurd/tls.h: Include <atomic.h>.
[!defined __ASSEMBLER__] (THREAD_GSCOPE_GLOBAL, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_WAIT): Define macros.
* sysdeps/generic/tls.h: Document THREAD_GSCOPE_IN_TCB.
* sysdeps/aarch64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/alpha/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/arm/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/hppa/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/i386/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/ia64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/m68k/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/microblaze/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/mips/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/nios2/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/powerpc/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/riscv/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/s390/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/sh/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/sparc/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/tile/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/x86_64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
 2018-03-11 13:06:33 +01:00
Andrew Waterman
fdcc625376 RISC-V: fmax/fmin: Handle signalling NaNs correctly. 
RISC-V's fmax(sNAN,4) returns 4 but glibc expects it to return qNAN.

	* sysdeps/riscv/rvd/s_fmax.c (__fmax): Handle sNaNs correctly.
	* sysdeps/riscv/rvd/s_fmin.c (__fmin): Likewise.
	* sysdeps/riscv/rvf/s_fmaxf.c (__fmaxf): Likewise.
	* sysdeps/riscv/rvf/s_fminf.c (__fminf): Likewise.
 2018-02-22 14:31:54 -05:00
DJ Delorie
8090720a87 RISC-V: Do not initialize $gp in TLS macros. 
RISC-V TLS doesn't require GP to be initialized, and doing so breaks
TLS in a shared object.
 2018-02-22 14:28:47 -05:00
Palmer Dabbelt
c506155709
RISC-V: Build Infastructure 
This patch lays out the top-level orginazition of the RISC-V port.  It
contains all the Implies files as well as various other fragments of
build infastructure for the RISC-V port.  This contains the only change
to a shared file: config.h.in.

RISC-V is a family of base ISAs with optional extensions.  The base ISAs
are RV32I and RV64I, which are 32-bit and 64-bit integer-only ISAs, but
this port currently only supports RV64I based systems.  Support for
RISC-V lives in in sysdeps/riscv.  In addition to these ISAs, our glibc
port supports most of the currently-defined extensions: the A extension
for atomics, the M extension for multiplication, the C extension for
compressed instructions, and the F/D extensions for single/double
precision IEEE floating-point.  Most of these extensions are handled by
GCC, but glibc defines various floating-point wrappers and emulation
routines as well as some atomic wrappers.

We support running glibc-based programs on Linux, the support for which
lives in sysdeps/unix/sysv/linux/riscv.

2018-01-29  Palmer Dabbelt  <palmer@sifive.com>

        * sysdeps/riscv/Implies: New file.
        * sysdeps/riscv/Makefile: Likewise.
        * sysdeps/riscv/configure: Likewise.
        * sysdeps/riscv/configure.ac: Likewise.
        * sysdeps/riscv/nptl/Makefile: Likewise.
        * sysdeps/riscv/preconfigure: Likewise.
        * sysdeps/riscv/rv64/Implies-after: Likewise.
        * sysdeps/riscv/rv64/rvd/Implies: Likewise.
        * sysdeps/riscv/rv64/rvf/Implies: Likewise.
        * sysdeps/unix/sysv/linux/riscv/Implies: Likewise.
        * sysdeps/unix/sysv/linux/riscv/Makefile: Likewise.
        * sysdeps/unix/sysv/linux/riscv/Versions: Likewise.
        * sysdeps/unix/sysv/linux/riscv/configure: Likewise.
        * sysdeps/unix/sysv/linux/riscv/configure.ac: Likewise.
        * sysdeps/unix/sysv/linux/riscv/ldd-rewrite.sed: Likewise.
        * sysdeps/unix/sysv/linux/riscv/rv64/Implies: Likewise.
        * sysdeps/unix/sysv/linux/riscv/rv64/Makefile: Likewise.
        * sysdeps/unix/sysv/linux/riscv/shlib-versions: Likewise.
 2018-01-29 10:43:15 -08:00
Palmer Dabbelt
2268c4337c
RISC-V: Add ABI Lists 
I started with the aarch64 ABI lists and manually went through each
difference, ensuring that the missing entries had been deprecated along
the line.  Darius generated the ulps files by running the test cases on QEMU.

2018-01-29  Palmer Dabbelt  <palmer@sifive.com>

        * sysdeps/riscv/nofpu/libm-test-ulps: New file.
        * sysdeps/riscv/nofpu/libm-test-ulps-name: Likewise.
        * sysdeps/riscv/rv64/rvd/libm-test-ulps: Likewise.
        * sysdeps/riscv/rv64/rvd/libm-test-ulps-name: Likewise.
        * sysdeps/unix/sysv/linux/riscv/localplt.data: Likewise.
        * sysdeps/unix/sysv/linux/riscv/rv64/c++-types.data: Likewise.
        * sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist: Likewise.
        * sysdeps/unix/sysv/linux/riscv/rv64/libanl.abilist: Likewise.
        * sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist: Likewise.
        * sysdeps/unix/sysv/linux/riscv/rv64/libdl.abilist: Likewise.
        * sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise.
        * sysdeps/unix/sysv/linux/riscv/rv64/libnsl.abilist: Likewise.
        * sysdeps/unix/sysv/linux/riscv/rv64/librt.abilist: Likewise.
        * sysdeps/unix/sysv/linux/riscv/rv64/libutil.abilist: Likewise.
 2018-01-29 10:37:28 -08:00
Palmer Dabbelt
7f33b09c65
RISC-V: Linux ABI 
Linux-specific code that is required for maintaining ABI compatibility.
This doesn't contain the actual system call interface, that is split out
in order to avoid having a patch that's too big.

2018-01-29  Palmer Dabbelt  <palmer@sifive.com>

        * sysdeps/riscv/nptl/pthread-offsets.h: New file.
        * sysdeps/riscv/nptl/pthreaddef.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/bits/fcntl.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/bits/mman.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/bits/sigcontext.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/dl-cache.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/flush-icache.c: Likewise.
        * sysdeps/unix/sysv/linux/riscv/getcontext.S: Likewise.
        * sysdeps/unix/sysv/linux/riscv/init-first.c: Likewise.
        * sysdeps/unix/sysv/linux/riscv/libc-vdso.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/makecontext.c: Likewise.
        * sysdeps/unix/sysv/linux/riscv/readelflib.c: Likewise.
        * sysdeps/unix/sysv/linux/riscv/register-dump.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/setcontext.S: Likewise.
        * sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/swapcontext.S: Likewise.
        * sysdeps/unix/sysv/linux/riscv/sys/cachectl.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/sys/procfs.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/sys/ucontext.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/sys/user.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/ucontext-macros.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/ucontext_i.sym: Likewise.
 2018-01-29 10:37:27 -08:00
Palmer Dabbelt
36960f0c76
RISC-V: Linux Syscall Interface 
Contains the Linux system call interface, as well as the definitions of
a handful of system calls.

2018-01-29  Palmer Dabbelt  <palmer@sifive.com>

        * sysdeps/riscv/nptl/nptl-sysdep.S: New file.
        * sysdeps/unix/sysv/linux/riscv/arch-fork.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/clone.S: Likewise.
        * sysdeps/unix/sysv/linux/riscv/profil-counter.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/pt-vfork.S: Likewise.
        * sysdeps/unix/sysv/linux/riscv/syscall.c: Likewise.
        * sysdeps/unix/sysv/linux/riscv/sysdep.S: Likewise.
        * sysdeps/unix/sysv/linux/riscv/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/riscv/vfork.S: Likewise.
 2018-01-29 10:27:52 -08:00
Palmer Dabbelt
d1c09b2471
RISC-V: Atomic and Locking Routines 
This patch implements various atomic and locking routines on RISC-V.  We
mandate the A extension on Linux-capable RISC-V systems, so this can
rely on always having the various atomic instructions availiable.

2018-01-29  Palmer Dabbelt  <palmer@sifive.com>

        * sysdeps/riscv/nptl/bits/pthreadtypes-arch.h: New file.
        * sysdeps/riscv/nptl/bits/semaphore.h: Likewise.
        * sysdeps/riscv/nptl/libc-lowlevellock.c: Likewise.
        * sysdeps/unix/sysv/linux/riscv/atomic-machine.h: Likewise.
 2018-01-29 10:27:17 -08:00
Palmer Dabbelt
b2cb5e0298
RISC-V: Hard Float Support 
This patch contains hardware floating-point support for the RISC-V ISA.
While we currently only support hard-float systems with both the F and D
extensions, I've left the F-specific code split out into seperate
folders in order to ease adding support for F-only and RV32I-based
systems in the future.  I gave this a quick once-over and believe I've
removed all the code that implements RV32IF, RV32IFD, and RV64IF
targets.

2018-01-29  Palmer Dabbelt  <palmer@sifive.com>

        * sysdeps/riscv/rv64/rvd/s_ceil.c: New file.
        * sysdeps/riscv/rv64/rvd/s_floor.c: Likewise.
        * sysdeps/riscv/rv64/rvd/s_llrint.c: Likewise.
        * sysdeps/riscv/rv64/rvd/s_llround.c: Likewise.
        * sysdeps/riscv/rv64/rvd/s_lrint.c: Likewise.
        * sysdeps/riscv/rv64/rvd/s_lround.c: Likewise.
        * sysdeps/riscv/rv64/rvd/s_nearbyint.c: Likewise.
        * sysdeps/riscv/rv64/rvd/s_rint.c: Likewise.
        * sysdeps/riscv/rv64/rvd/s_round.c: Likewise.
        * sysdeps/riscv/rv64/rvd/s_roundeven.c: Likewise.
        * sysdeps/riscv/rv64/rvd/s_trunc.c: Likewise.
        * sysdeps/riscv/rv64/rvf/s_llrintf.c: Likewise.
        * sysdeps/riscv/rv64/rvf/s_llroundf.c: Likewise.
        * sysdeps/riscv/rv64/rvf/s_lrintf.c: Likewise.
        * sysdeps/riscv/rv64/rvf/s_lroundf.c: Likewise.
        * sysdeps/riscv/rvd/e_sqrt.c: Likewise.
        * sysdeps/riscv/rvd/s_copysign.c: Likewise.
        * sysdeps/riscv/rvd/s_finite.c: Likewise.
        * sysdeps/riscv/rvd/s_fma.c: Likewise.
        * sysdeps/riscv/rvd/s_fmax.c: Likewise.
        * sysdeps/riscv/rvd/s_fmin.c: Likewise.
        * sysdeps/riscv/rvd/s_fpclassify.c: Likewise.
        * sysdeps/riscv/rvd/s_isinf.c: Likewise.
        * sysdeps/riscv/rvd/s_isnan.c: Likewise.
        * sysdeps/riscv/rvd/s_issignaling.c: Likewise.
        * sysdeps/riscv/rvf/e_sqrtf.c: Likewise.
        * sysdeps/riscv/rvf/fclrexcpt.c: Likewise.
        * sysdeps/riscv/rvf/fegetenv.c: Likewise.
        * sysdeps/riscv/rvf/fegetmode.c: Likewise.
        * sysdeps/riscv/rvf/fegetround.c: Likewise.
        * sysdeps/riscv/rvf/feholdexcpt.c: Likewise.
        * sysdeps/riscv/rvf/fesetenv.c: Likewise.
        * sysdeps/riscv/rvf/fesetexcept.c: Likewise.
        * sysdeps/riscv/rvf/fesetmode.c: Likewise.
        * sysdeps/riscv/rvf/fesetround.c: Likewise.
        * sysdeps/riscv/rvf/feupdateenv.c: Likewise.
        * sysdeps/riscv/rvf/fgetexcptflg.c: Likewise.
        * sysdeps/riscv/rvf/fraiseexcpt.c: Likewise.
        * sysdeps/riscv/rvf/fsetexcptflg.c: Likewise.
        * sysdeps/riscv/rvf/ftestexcept.c: Likewise.
        * sysdeps/riscv/rvf/get-rounding-mode.h: Likewise.
        * sysdeps/riscv/rvf/math_private.h: Likewise.
        * sysdeps/riscv/rvf/s_ceilf.c: Likewise.
        * sysdeps/riscv/rvf/s_copysignf.c: Likewise.
        * sysdeps/riscv/rvf/s_finitef.c: Likewise.
        * sysdeps/riscv/rvf/s_floorf.c: Likewise.
        * sysdeps/riscv/rvf/s_fmaf.c: Likewise.
        * sysdeps/riscv/rvf/s_fmaxf.c: Likewise.
        * sysdeps/riscv/rvf/s_fminf.c: Likewise.
        * sysdeps/riscv/rvf/s_fpclassifyf.c: Likewise.
        * sysdeps/riscv/rvf/s_isinff.c: Likewise.
        * sysdeps/riscv/rvf/s_isnanf.c: Likewise.
        * sysdeps/riscv/rvf/s_issignalingf.c: Likewise.
        * sysdeps/riscv/rvf/s_nearbyintf.c: Likewise.
        * sysdeps/riscv/rvf/s_rintf.c: Likewise.
        * sysdeps/riscv/rvf/s_roundevenf.c: Likewise.
        * sysdeps/riscv/rvf/s_roundf.c: Likewise.
        * sysdeps/riscv/rvf/s_truncf.c: Likewise.
 2018-01-29 10:26:43 -08:00
Palmer Dabbelt
67236aeb6e
RISC-V: Generic <math.h> and soft-fp Routines 
This patch contains the miscellaneous math routines and headers we have
implemented for RISC-V.  This includes things from <math.h> that aren't
completely ISA-generic, floating-point bit manipulation, and soft-fp
hooks.

2018-01-29  Palmer Dabbelt  <palmer@sifive.com>

        * sysdeps/riscv/bits/fenv.h: New file.
        * sysdeps/riscv/e_sqrtl.c: Likewise.
        * sysdeps/riscv/fpu_control.h: Likewise.
        * sysdeps/riscv/math-tests.h: Likewise.
        * sysdeps/riscv/nofpu/Implies: Likewise.
        * sysdeps/riscv/sfp-machine.h: Likewise.
        * sysdeps/riscv/tininess.h: Likewise.
 2018-01-29 10:26:35 -08:00
Palmer Dabbelt
337126607f
RISC-V: Thread-Local Storage Support 
This patch implements TLS support for RISC-V.  We support all four
standard TLS addressing modes (LE, IE, LD, and GD) when running on
Linux via NPTL.  There is a draft psABI document that defines our TLS
ABI here

  https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md#thread-local-storage

2018-01-29  Palmer Dabbelt  <palmer@sifive.com>

        * sysdeps/riscv/dl-tls.h: New file.
        * sysdeps/riscv/libc-tls.c: Likewise.
        * sysdeps/riscv/nptl/tcb-offsets.sym: Likewise.
        * sysdeps/riscv/nptl/tls.h: Likewise.
        * sysdeps/riscv/stackinfo.h: Likewise.
 2018-01-29 10:25:58 -08:00
Palmer Dabbelt
c776fa113d
RISC-V: ABI Implementation 
This patch contains code that needs to directly know about the RISC-V
ABI, which is specified in a work-in-progress psABI document:

  https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md

This is meant to contain all the RISC-V code that needs to explicitly
name registers or manage in-memory structure layout.  This does not
contain any of the Linux-specific code.

2018-01-29  Palmer Dabbelt  <palmer@sifive.com>

        * sysdeps/riscv/__longjmp.S: New file.
        * sysdeps/riscv/backtrace.c: Likewise.
        * sysdeps/riscv/bits/endian.h: Likewise.
        * sysdeps/riscv/bits/setjmp.h: Likewise.
        * sysdeps/riscv/bits/wordsize.h: Likewise.
        * sysdeps/riscv/bsd-_setjmp.c: Likewise.
        * sysdeps/riscv/bsd-setjmp.c: Likewise.
        * sysdeps/riscv/dl-trampoline.S: Likewise.
        * sysdeps/riscv/gccframe.h: Likewise.
        * sysdeps/riscv/jmpbuf-offsets.h: Likewise.
        * sysdeps/riscv/jmpbuf-unwind.h: Likewise.
        * sysdeps/riscv/machine-gmon.h: Likewise.
        * sysdeps/riscv/memusage.h: Likewise.
        * sysdeps/riscv/setjmp.S: Likewise.
        * sysdeps/riscv/sys/asm.h: Likewise.
        * sysdeps/riscv/tls-macros.h: Likewise.
 2018-01-29 10:25:29 -08:00