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2018-09-05Remove alpha math_private.h.Joseph Myers1-18/+0
After some math_private.h cleanups (in particulat math-barriers.h being split out), the only thing left in the alpha math_private.h was macro definitions of __isnan and __isnanf, apparently (based on the comments) intended to avoid problems with inline definitions in other math_private.h files. Those inline definitions were removed in commit fe8c2b33aed067282ecac0cc3fdff1feef88548b, and the alpha math_private.h is no longer needed; this patch removes it. Tested with build-many-glibcs.py that installed stripped shared libraries for alpha are unchanged by the patch. * sysdeps/alpha/fpu/math_private.h: Remove.
2018-09-05Move float128 inlines from sysdeps/generic/math_private.h to include/math.h.Joseph Myers1-23/+0
Continuing the cleanup of math_private.h, with a view to it becoming the header for the APIs defined therein and not also a header with inline variants of math.h APIs, this patch moves inline definitions of __isinff128 and fabsf128 to include/math.h, so that any users of math.h in glibc automatically get the optimized functions rather than quietly missing them if they do not also include math_private.h. Tested for x86_64 and x86, and with build-many-glibcs.py with GCC 6. There are changes to installed stripped libc.so on configurations with distinct _Float128, because of __printf_fp_l code that now gets the __isinff128 inline where previously it called the out-of-line function because of the lack of a math_private.h call. It seems appropriate that this code does get the inline (as it would automatically with GCC 7 and later when the built-in function is used) rather than being the only place in glibc that does not. * sysdeps/generic/math_private.h [__HAVE_DISTINCT_FLOAT128 && !__GNUC_PREREQ (7, 0)] (__isinff128): Move this inline function .... [__HAVE_DISTINCT_FLOAT128] (fabsf128): And this one .... * include/math.h [!_ISOMAC]: To here....
2018-09-04Move fenv.h soft-float inlines from fenv_private.h to include/fenv.h.Joseph Myers30-119/+2
<fenv_private.h> has inline versions of various <fenv.h> functions, and their __fe* variants, for systems (generally soft-float) without support for floating-point exceptions, rounding modes or both. Having these inlines in a separate header introduces a risk of a source file including <fenv.h> and compiling OK on x86_64, but failing to compile (because the feraiseexcept inline is actually a macro that discards its argument, to avoid the need for #ifdef FE_INVALID conditionals), or not being properly optimized, on systems without the exceptions and rounding modes support (when these inlines were in math_private.h, we had a few cases where this broke the build because there was no obvious reason for a file to need math_private.h and it didn't need that header on x86_64). By moving those inlines to include/fenv.h, this risk can be avoided, and fenv_private.h becomes more clearly defined as specifically the header for the internal libc_fe* and SET_RESTORE_ROUND* interfaces. This patch makes that move, removing fenv_private.h includes that are no longer needed (or replacing them by fenv.h includes in a few cases that didn't already have such an include). Tested for x86_64 and x86, and tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by the patch. * sysdeps/generic/fenv_private.h [FE_ALL_EXCEPT == 0]: Move this code .... [!FE_HAVE_ROUNDING_MODES]: And this code .... * include/fenv.h [!_ISOMAC]: ... to here. * math/fraiseexcpt.c (__feraiseexcept): Undefine as macro. (feraiseexcept): Likewise. * math/fromfp.h: Do not include <fenv_private.h>. * 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_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_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/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/wordsize-64/s_lround.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/k_standardl.c: Likewise. * sysdeps/ieee754/ldbl-128/e_expl.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-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-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. * math/w_ilogb_template.c: Include <fenv.h> instead of <fenv_private.h>. * math/w_llogb_template.c: Likewise. * sysdeps/powerpc/fpu/e_sqrt.c: Likewise. * sysdeps/powerpc/fpu/e_sqrtf.c: Likewise.
2018-09-03Do not include fenv_private.h in math_private.h.Joseph Myers111-2/+110
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.
2018-08-31[BZ #20271] Add newlines in __libc_fatal calls.Paul Pluzhnikov12-13/+13
2018-08-28Split fenv_private.h out of math_private.h more consistently.Joseph Myers15-766/+798
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>.
2018-08-27Move EXCEPTION_SET_FORCES_TRAP out of math-tests.h.Joseph Myers3-15/+39
Completing the move of macros out of math-tests.h to smaller headers following typo-proof conventions instead of using #ifndef, this patch moves the EXCEPTION_SET_FORCES_TRAP macro out to its own math-tests-trap-force.h header. Tested with build-many-glibcs.py. * sysdeps/generic/math-tests-trap-force.h: New file. * sysdeps/generic/math-tests.h: Include <math-tests-trap-force.h>. (EXCEPTION_SET_FORCES_TRAP): Do not define here. * sysdeps/powerpc/math-tests.h: Remove file. * sysdeps/powerpc/fpu/math-tests-trap-force.h: New file.
2018-08-27Update netinet/udp.h from Linux 4.18.Joseph Myers1-0/+1
This patch adds the UDP_SEGMENT constant from Linux 4.18 to netinet/udp.h. Tested for x86_64. * sysdeps/gnu/netinet/udp.h (UDP_SEGMENT): New macro.
2018-08-24Move EXCEPTION_ENABLE_SUPPORTED out of math-tests.h.Joseph Myers5-19/+52
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.
2018-08-24Remove unused math filesWilco Dijkstra16-1071/+0
Remove empty files due to the sin/cos improvements: k_sinf.c, k_cosf.c, k_cos.c, k_sin.c. After the tanf change s_rem_pio2f.c and k_rem_pio2f.c (and the ia64, m68k and powerpc equivalents) are no longer used, so remove them. All e_rem_pio2.c files were already empty or commented out, so remove them too. Passes build-many-glibcs. * math/Makefile: Remove empty files k_sin(f).c, k_cos(f).c. Remove unused files e_rem_pio2(f).c, k_rem_pio2f.c. * sysdeps/i386/fpu/e_rem_pio2.c: Delete file. * sysdeps/ia64/fpu/e_rem_pio2.c: Likewise. * sysdeps/ia64/fpu/e_rem_pio2f.c: Likewise. * sysdeps/ia64/fpu/k_rem_pio2f.c: Likewise. * sysdeps/ieee754/dbl-64/e_rem_pio2.c: Likewise. * sysdeps/ieee754/dbl-64/k_cos.c: Likewise. * sysdeps/ieee754/dbl-64/k_sin.c: Likewise. * sysdeps/ieee754/flt-32/e_rem_pio2f.c: Likewise. * sysdeps/ieee754/flt-32/k_cosf.c: Likewise. * sysdeps/ieee754/flt-32/k_rem_pio2f.c: Likewise. * sysdeps/ieee754/flt-32/k_sinf.c: Likewise. * sysdeps/m68k/m680x0/fpu/e_rem_pio2.c: Likewise * sysdeps/m68k/m680x0/fpu/e_rem_pio2f.c: Likewise * sysdeps/m68k/m680x0/fpu/k_rem_pio2f.c: Likewise * sysdeps/powerpc/fpu/e_rem_pio2f.c: Likewise. * sysdeps/powerpc/fpu/k_rem_pio2f.c: Likewise.
2018-08-23Move EXCEPTION_TESTS_* out of math-tests.hJoseph Myers6-59/+33
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.
2018-08-23Speedup tanf range reductionWilco Dijkstra1-1/+28
Speedup tanf range reduction by using the new sincosf range reduction algorithm. Overall code quality is improved due to inlining, so there is a speedup even if no range reduction is required. tanf throughput gains on Cortex-A72: * |x| < M_PI_4 : 1.1x * |x| < M_PI_2 : 1.2x * |x| < 2 * M_PI: 1.5x * |x| < 120.0 : 1.6x * |x| < Inf : 12.1x * sysdeps/ieee754/flt-32/s_tanf.c (__tanf): Use fast range reduction.
2018-08-22Move ROUNDING_TESTS_* out of math-tests.h.Joseph Myers9-35/+87
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.
2018-08-21Add PF_XDP, AF_XDP and SOL_XDP from Linux 4.18 to bits/socket.h.Tobias Klauser1-1/+4
This patch adds the PF_XDP, AF_XDP and SOL_XDP macros from Linux 4.18 to sysdeps/unix/sysv/linux/bits/socket.h. * sysdeps/unix/sysv/linux/bits/socket.h (PF_MAX): Set to 45. (PF_XDP): New macro. (AF_XDP): New macro. (SOL_XDP): New macro.
2018-08-21Update netinet/tcp.h from Linux 4.18.Joseph Myers1-0/+16
This patch adds constants from netinet/tcp.h in Linux 4.18, and an associated struct tcp_zerocopy_receive, to sysdeps/gnu/netinet/tcp.h. The new TCP_REPAIR_* constants seemed sufficiently related to those already present to include them. Note that this patch does not include additions to struct tcp_info; there are many other elements in this structure in the Linux kernel that are not included in the glibc version (which was last extended in 2007, it seems). Such additions to the end of the structure may be OK with the expected way it is used (size passed explicitly to the kernel with getsockopt), but in principle any change to the size of a type provided by glibc is an ABI change for external applications / libraries using that type in their ABIs, and has the associated risks of such a change. Tested for x86_64. * sysdeps/gnu/netinet/tcp.h (TCP_ZEROCOPY_RECEIVE): New macro. (TCP_INQ): Likewise. (TCP_CM_INQ): Likewise. (TCP_REPAIR_ON): Likewise. (TCP_REPAIR_OFF): Likewise. (TCP_REPAIR_OFF_NO_WP): Likewise. (struct tcp_zerocopy_receive): New type.
2018-08-21Avoid running some tests if the file system does not support holesFlorian Weimer1-0/+2
Otherwise, these tests fills up the entire disk (or just run very slowly and eventually time out).
2018-08-21__readlink_chk: Remove micro-optimizationFlorian Weimer1-33/+0
2018-08-20__readlink_chk: Assume HAVE_INLINED_SYSCALLSFlorian Weimer1-7/+1
HAVE_INLINED_SYSCALLS is always defined on Linux. Switch to INLINE_SYSCALL_CALL as well.
2018-08-20Update struct signalfd_siginfo from Linux 4.18.Joseph Myers1-1/+6
This patch updates struct signalfd_siginfo in sys/signalfd.h with new members from Linux 4.18 (plus ssi_addr_lsb, added to the kernel in 2.6.37 without being added to sys/signalfd.h at that time). The __pad2 member name follows the kernel and the existing __pad name. Tested for x86_64. * sysdeps/unix/sysv/linux/sys/signalfd.h (struct signalfd_siginfo): Add ssi_addr_lsb, ssi_syscall, ssi_call_addr and ssi_arch members.
2018-08-20powerpc: Remove powerpc specific sinf and cosf optimizationRajalakshmi Srinivasaraghavan13-1453/+0
New generic optimization of sinf and cosf introduced by commit 599cf3976679e1b345307d9c02057f02aa95528f shows improvement compared to powerpc specific assembly version. Hence removing the powerpc assembly versions to make use of generic code.
2018-08-17math: Regenerate s390 ulpsFlorian Weimer1-0/+18
Based on results on a s390x 2964 machine, with -march=z196 and -mtune=zEC12, and separately with -march=z13 and -mtune=z14.
2018-08-16powerpc: Rearrange little endian specific filesRajalakshmi Srinivasaraghavan8-24/+31
This patch moves little endian specific POWER9 optimization files to sysdeps/powerpc/powerpc64/le and creates POWER9 ifunc functions only for little endian.
2018-08-15[aarch64] Add an ASIMD variant of strlen for falkorSiddhesh Poyarekar6-4/+261
This variant of strlen uses vector loads and operations to reduce the size of the code and also eliminate the non-ascii fallback. This works very well for falkor because of its two vector units and efficient vector ops. In the best case it reduces latency of cases in bench-strlen by 48%, with gains throughout the benchmark. strlen-walk also sees uniform gains in the 5%-15% range. Overall the routine appears to work better than the stock one for falkor regardless of the benchmark, length of string or cache state. The same cannot be said of a53 and a72 though. a53 performance was greatly reduced and for a72 it was a bit of a mixed bag, slightly on the negative side but I reckon it might be fast in some situations. * sysdeps/aarch64/strlen.S (__strlen): Rename to STRLEN. [!STRLEN](STRLEN): Set to __strlen. * sysdeps/aarch64/multiarch/strlen.c: New file. * sysdeps/aarch64/multiarch/strlen_generic.S: Likewise. * sysdeps/aarch64/multiarch/strlen_asimd.S: Likewise. * sysdeps/aarch64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add strlen. * sysdeps/aarch64/multiarch/Makefile (sysdep_routines): Add strlen_generic and strlen_asimd. Reviewed-By: szabolcs.nagy@arm.com CC: pinskia@gmail.com
2018-08-15Use generic sinf/cosf in lgammaf_rWilco Dijkstra3-112/+8
The internal functions __kernel_sinf and __kernel_cosf are used only by lgammaf_r. Removing the internal functions and using the generic sinf and cosf is better overall. Benchmarking on Cortex-A72 shows the generic sinf and cosf are 1.4x and 2.3x faster in the range |x| < PI/4, and 0.66x and 1.1x for |x| < PI/2, so it should make lgammaf_r faster on average. GLIBC regression tests pass on AArch64. * sysdeps/ieee754/flt-32/e_lgammaf_r.c (sin_pif): Use __sinf/__cosf. * sysdeps/ieee754/flt-32/k_cosf.c (__kernel_cosf): Remove all code. * sysdeps/ieee754/flt-32/k_sinf.c (__kernel_sinf): Likewise.
2018-08-15Fix spaces in x86_64 ULP fileWilco Dijkstra1-3/+3
Fix a few missing spaces, it's now identical to the regenerated version. Passes GLIBC tests on x64. * sysdeps/x86_64/fpu/libm-test-ulps: Regenerate to fix spaces.
2018-08-14Improve performance of sinf and cosfWilco Dijkstra7-384/+190
The second patch improves performance of sinf and cosf using the same algorithms and polynomials. The returned values are identical to sincosf for the same input. ULP definitions for AArch64 and x64 are updated. sinf/cosf througput gains on Cortex-A72: * |x| < 0x1p-12 : 1.2x * |x| < M_PI_4 : 1.8x * |x| < 2 * M_PI: 1.7x * |x| < 120.0 : 2.3x * |x| < Inf : 3.0x * NEWS: Mention sinf, cosf, sincosf. * sysdeps/aarch64/libm-test-ulps: Update ULP for sinf, cosf, sincosf. * sysdeps/x86_64/fpu/libm-test-ulps: Update ULP for sinf and cosf. * sysdeps/x86_64/fpu/multiarch/s_sincosf-fma.c: Add definitions of constants rather than including generic sincosf.h. * sysdeps/x86_64/fpu/s_sincosf_data.c: Remove. * sysdeps/ieee754/flt-32/s_cosf.c (cosf): Rewrite. * sysdeps/ieee754/flt-32/s_sincosf.h (reduced_sin): Remove. (reduced_cos): Remove. (sinf_poly): New function. * sysdeps/ieee754/flt-32/s_sinf.c (sinf): Rewrite.
2018-08-13Update syscall-names.list for Linux 4.18.Joseph Myers1-2/+4
This patch updates sysdeps/unix/sysv/linux/syscall-names.list for Linux 4.18. The io_pgetevents and rseq syscalls are added to the kernel on various architectures, so need to be mentioned in this file. Tested with build-many-glibcs.py. * sysdeps/unix/sysv/linux/syscall-names.list: Update kernel version to 4.18. (io_pgetevents): New syscall. (rseq): Likewise.
2018-08-10Move SNAN_TESTS_* out of math-tests.h.Joseph Myers5-33/+78
Continuing moving macros out of math-tests.h to smaller headers following typo-proof conventions instead of using #ifndef, this patch moves the SNAN_TESTS_* macros for individual types out to their own sysdeps header (while the type-generic SNAN_TESTS wrapper for those macros remains in math-tests.h). Tested for x86_64 and x86, and with build-many-glibcs.py. * sysdeps/generic/math-tests-snan.h: New file. * sysdeps/generic/math-tests.h: Include <math-tests-snan.h>. (SNAN_TESTS_float): Do not define here. (SNAN_TESTS_double): Likewise. (SNAN_TESTS_long_double): Likewise. (SNAN_TESTS_float128): Likewise. * sysdeps/i386/fpu/math-tests-snan.h: New file. * sysdeps/i386/fpu/math-tests.h: Remove file. * sysdeps/ia64/math-tests-snan.h: New file. * sysdeps/ia64/math-tests.h: Remove file. * sysdeps/x86/math-tests.h: Likewise. * sysdeps/x86_64/fpu/math-tests-snan.h: New file.
2018-08-10Improve performance of sincosfWilco Dijkstra6-132/+259
This patch is a complete rewrite of sincosf. The new version is significantly faster, as well as simple and accurate. The worst-case ULP is 0.5607, maximum relative error is 0.5303 * 2^-23 over all 4 billion inputs. In non-nearest rounding modes the error is 1ULP. The algorithm uses 3 main cases: small inputs which don't need argument reduction, small inputs which need a simple range reduction and large inputs requiring complex range reduction. The code uses approximate integer comparisons to quickly decide between these cases. The small range reducer uses a single reduction step to handle values up to 120.0. It is fastest on targets which support inlined round instructions. The large range reducer uses integer arithmetic for simplicity. It does a 32x96 bit multiply to compute a 64-bit modulo result. This is more than accurate enough to handle the worst-case cancellation for values close to an integer multiple of PI/4. It could be further optimized, however it is already much faster than necessary. sincosf throughput gains on Cortex-A72: * |x| < 0x1p-12 : 1.6x * |x| < M_PI_4 : 1.7x * |x| < 2 * M_PI: 1.5x * |x| < 120.0 : 1.8x * |x| < Inf : 2.3x * math/Makefile: Add s_sincosf_data.c. * sysdeps/ia64/fpu/s_sincosf_data.c: New file. * sysdeps/ieee754/flt-32/s_sincosf.h (abstop12): Add new function. (sincosf_poly): Likewise. (reduce_small): Likewise. (reduce_large): Likewise. * sysdeps/ieee754/flt-32/s_sincosf.c (sincosf): Rewrite. * sysdeps/ieee754/flt-32/s_sincosf_data.c: New file with sincosf data. * sysdeps/m68k/m680x0/fpu/s_sincosf_data.c: New file. * sysdeps/x86_64/fpu/s_sincosf_data.c: New file.
2018-08-10Clean up converttoint handling and document the semanticsSzabolcs Nagy3-19/+23
This patch currently only affects aarch64. The roundtoint and converttoint internal functions are only called with small values, so 32 bit result is enough for converttoint and it is a signed int conversion so the return type is changed to int32_t. The original idea was to help the compiler keeping the result in uint64_t, then it's clear that no sign extension is needed and there is no accidental undefined or implementation defined signed int arithmetics. But it turns out gcc does a good job with inlining so changing the type has no overhead and the semantics of the conversion is less surprising this way. Since we want to allow the asuint64 (x + 0x1.8p52) style conversion, the top bits were never usable and the existing code ensures that only the bottom 32 bits of the conversion result are used. On aarch64 the neon intrinsics (which round ties to even) are changed to round and lround (which round ties away from zero) this does not affect the results in a significant way, but more portable (relies on round and lround being inlined which works with -fno-math-errno). The TOINT_SHIFT and TOINT_RINT macros were removed, only keep separate code paths for TOINT_INTRINSICS and !TOINT_INTRINSICS. * sysdeps/aarch64/fpu/math_private.h (roundtoint): Use round. (converttoint): Use lround. * sysdeps/ieee754/flt-32/math_config.h (roundtoint): Declare and document the semantics when TOINT_INTRINSICS is set. (converttoint): Likewise. (TOINT_RINT): Remove. (TOINT_SHIFT): Remove. * sysdeps/ieee754/flt-32/e_expf.c (__expf): Remove the TOINT_RINT code path.
2018-08-10Linux: Rewrite __old_getdents64 [BZ #23497]Florian Weimer3-25/+176
Commit 298d0e3129c0b5137f4989275b13fe30d0733c4d ("Consolidate Linux getdents{64} implementation") broke the implementation because it does not take into account struct offset differences. The new implementation is close to the old one, before the consolidation, but has been cleaned up slightly.
2018-08-10S390: Fix unwind in 32-bit _mcountIlya Leoshkevich1-2/+6
* Fix CFI offset for %r14. * Fix unwound value of %r15 being off by 128 bytes. ChangeLog: * sysdeps/s390/s390-32/s390-mcount.S (_mcount): Fix unwind.
2018-08-10S390: Implement 64-bit __fentry__Ilya Leoshkevich4-57/+125
* Since __fentry__ is almost the same as _mcount, reuse the code by #including it twice with different #defines around. * Remove LA usages - they are needed in 31-bit mode to clear the top bit, but in 64-bit they appear to do nothing. * Add CFI rule for the nonstandard return register. This rule applies to the current function (binutils generates a new CIE - see gas/dw2gencfi.c:select_cie_for_fde()), so it is not necessary to put __fentry__ into a new file. * Fix CFI offset for %r14. * Add CFI rule for %r0. * Fix unwound value of %r15 being off by 244 bytes. * Unwinding in __fentry__@plt does not work, no plan to fix it - it would require asking linker to generate CFI for return address in %r0. From functional perspective keeping it broken is fine, since the callee did not have a chance to do anything yet. From convenience perspective it would be possible to enhance GDB in the future to treat __fentry__@plt in a special way. * Fix whitespace. * Fix offsets in comments, which were copied from 32-bit code. * 32-bit version will not be implemented, since it's not compatible with the corresponding PLT stubs: they assume %r12 points to GOT, which is not the case for gcc-emitted __fentry__ stub, which runs before the prolog. This patch adds the runtime support in glibc for the -mfentry gcc feature introduced in [1] and [2]. [1] https://gcc.gnu.org/ml/gcc-patches/2018-07/msg00784.html [2] https://gcc.gnu.org/ml/gcc-patches/2018-07/msg00912.html ChangeLog: * sysdeps/s390/s390-64/Versions (__fentry__): Add. * sysdeps/s390/s390-64/s390x-mcount.S: Move the common code to s390x-mcount.h and #include it. * sysdeps/s390/s390-64/s390x-mcount.h: New file. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist (__fentry__): Add.
2018-08-10Move __fentry__ version definition to sysdeps/{i386,x86_64}Ilya Leoshkevich2-0/+6
__fentry__ symbol is currently not defined for other architectures. Attempts to introduce it cause abicheck to fail, because it will be available since 2.29 earliest, and not 2.13, which is the case for Intel. With the new code, abicheck passes for i686-linux-gnu, x86_64-linux-gnu and x86_64-linux-gnu32 triples. ChangeLog: * stdlib/Versions: Remove __fentry__. * sysdeps/i386/Versions: Add __fentry__. * sysdeps/x86_64/Versions: Add __fentry__.
2018-08-10S390: Test that lazy binding does not clobber R0Ilya Leoshkevich7-0/+220
The following combinations need to be tested: * 32- (g5, esa and zarch) and 64-bit * linux32 glibc/configure CC='gcc -m31 -march=g5' * linux32 glibc/configure CC='gcc -m31' * linux32 glibc/configure CC='gcc -m31 -mzarch' * With and without VX: * glibc/configure libc_cv_asm_s390_vx=no * With and without profiling (using LD_PROFILE) * With and without pltexit (using LD_AUDIT) ChangeLog: * sysdeps/s390/Makefile: Register the new tests. * sysdeps/s390/tst-dl-runtime-mod.S: New file. * sysdeps/s390/tst-dl-runtime-profile-audit.c: New file. * sysdeps/s390/tst-dl-runtime-profile-noaudit.c: New file. * sysdeps/s390/tst-dl-runtime-resolve-audit.c: New file. * sysdeps/s390/tst-dl-runtime-resolve-noaudit.c: New file. * sysdeps/s390/tst-dl-runtime.c: New file.
2018-08-10S390: Do not clobber R0 in 64-bit _dl_runtime_profileIlya Leoshkevich1-0/+6
Preparation for the usage of R0 by __fentry__. ChangeLog: * sysdeps/s390/s390-64/dl-trampoline.h (_dl_runtime_profile): Do not clobber R0.
2018-08-10S390: Do not clobber R0 in 64-bit _dl_runtime_resolveIlya Leoshkevich1-2/+8
Preparation for the usage of R0 by __fentry__. ChangeLog: * sysdeps/s390/s390-64/dl-trampoline.h (_dl_runtime_resolve): Do not clobber R0.
2018-08-10S390: Do not clobber R0 in 32-bit _dl_runtime_profileIlya Leoshkevich1-0/+6
Preparation for the usage of R0 by __fentry__. ChangeLog: * sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_profile): Do not clobber R0.
2018-08-10S390: Do not clobber R0 in 32-bit _dl_runtime_resolveIlya Leoshkevich1-2/+8
Preparation for the usage of R0 by __fentry__. ChangeLog: * sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_resolve): Do not clobber R0.
2018-08-10S390: Use symbolic offsets for stack variables in 64-bit _dl_runtime_profileIlya Leoshkevich1-84/+143
Maintainability improvement. ChangeLog: * sysdeps/s390/s390-64/dl-trampoline.h (_dl_runtime_profile): Use symbolic offsets for stack variables.
2018-08-10S390: Use symbolic offsets for stack variables in 64-bit _dl_runtime_resolveIlya Leoshkevich1-41/+83
Maintainability improvement. ChangeLog: * sysdeps/s390/s390-64/dl-trampoline.h (_dl_runtime_resolve): Use symbolic offsets for stack variables.
2018-08-10S390: Use symbolic offsets for stack variables in 32-bit _dl_runtime_profileIlya Leoshkevich1-78/+135
Maintainability improvement. ChangeLog: * sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_profile): Use symbolic offsets for stack variables.
2018-08-10S390: Use symbolic offsets for stack variables in 32-bit _dl_runtime_resolveIlya Leoshkevich1-36/+73
Maintainability improvement. ChangeLog: * sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_resolve): Use symbolic offsets for stack variables.
2018-08-09Replace gen-libm-test.pl with gen-libm-test.py.Joseph Myers1-1/+1
Following the recent discussion of using Python instead of Perl and Awk for glibc build / test, this patch replaces gen-libm-test.pl with a new gen-libm-test.py script. This script should work with all Python versions supported by glibc (tested by hand with Python 2.7, tested in the build system with Python 3.5; configure prefers Python 3 if available). This script is designed to give identical output to gen-libm-test.pl for ease of verification of the change, except for generated comments referring to .py instead of .pl. (That is, identical for actual inputs passed to the script, not necessarily for all possible input; for example, this version more precisely follows the C standard syntax for floating-point constants when deciding when to add LIT macro calls.) In one place a comment notes that the generation of NON_FINITE flags is replicating a bug in the Perl script to assist in such comparisons (with the expectation that this bug can then be separately fixed in the Python script later). Tested for x86_64, including comparison of generated files (and hand testing of the case of generating a sorted libm-test-ulps file, which isn't covered by normal "make check"). I'd expect to follow this up by extending the new script to produce the ulps tables for the manual as well (replacing manual/libm-err-tab.pl, so that then we just have one ulps file parser) - at which point the manual build would depend on both Perl and Python (eliminating the Perl dependency would require someone to rewrite summary.pl in Python, and that would only eliminate the *direct* Perl dependency; current makeinfo is written in Perl so there would still be an indirect dependency). I think install.texi is more or less equally out-of-date regarding Perl and Python uses before and after this patch, so I don't think this patch depends on my patch <https://sourceware.org/ml/libc-alpha/2018-08/msg00133.html> to update install.texi regarding such uses (pending review). * math/gen-libm-test.py: New file. * math/gen-libm-test.pl: Remove. * math/Makefile [$(PERL) != no]: Change condition to [PYTHON]. ($(objpfx)libm-test-ulps.h): Use gen-libm-test.py instead of gen-libm-test.pl. ($(libm-test-c-noauto-obj)): Likewise. ($(libm-test-c-auto-obj)): Likewise. ($(libm-test-c-narrow-obj)): Likewise. (regen-ulps): Likewise. * math/README.libm-test: Update references to gen-libm-test.pl. * math/libm-test-driver.c (struct test_fj_f_data): Update comment referencing gen-libm-test.pl. * math/libm-test-nexttoward.inc (nexttoward_test_data): Likewise. * math/libm-test-support.c: Likewise. * math/libm-test-support.h: Likewise. * sysdeps/generic/libm-test-ulps: Likewise.
2018-08-09hurd: Avoid PLTs for __pthread_get/setspecificSamuel Thibault3-0/+4
* sysdeps/htl/pthreadP.h [IS_IN (libpthread)] (__pthread_getspecific, __pthread_setspecific): Add hidden proto. * sysdeps/htl/pt-getspecific.c (__pthread_getspecific): Add hidden def. * sysdeps/htl/pt-setspecific.c (__pthread_setspecific): Add hidden def.
2018-08-08[aarch64] Fix value of MIN_PAGE_SIZE for testingSiddhesh Poyarekar1-1/+1
MIN_PAGE_SIZE is normally set to 4096 but for testing it can be set to 16 so that it exercises the page crossing code for every misaligned access. The value was set to 15, which is obviously wrong, so fixed as obvious and tested. * sysdeps/aarch64/strlen.S [TEST_PAGE_CROSS](MIN_PAGE_SIZE): Fix value.
2018-08-06RISC-V: Don't use ps_get_thread_area in libthread_db (bug 23402)Andreas Schwab1-2/+3
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.
2018-08-06x86: Move STATE_SAVE_OFFSET/STATE_SAVE_MASK to sysdep.hH.J. Lu3-15/+10
Move STATE_SAVE_OFFSET and STATE_SAVE_MASK to sysdep.h to make sysdeps/x86/cpu-features.h a C header file. * sysdeps/x86/cpu-features.h (STATE_SAVE_OFFSET): Removed. (STATE_SAVE_MASK): Likewise. Don't check __ASSEMBLER__ to include <cpu-features-offsets.h>. * sysdeps/x86/sysdep.h (STATE_SAVE_OFFSET): New. (STATE_SAVE_MASK): Likewise. * sysdeps/x86_64/dl-trampoline.S: Include <cpu-features-offsets.h> instead of <cpu-features.h>.
2018-08-03Regen RISC-V rvd ULPsDJ Delorie1-4/+12
* 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".
2018-08-03RISC-V: Fix rounding save/restore bug.DJ Delorie1-1/+1
* 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.
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