glibc/sysdeps/arc, branch vdso

ARC: Regenerate ULPs

2024-08-11T13:29:56Z

Regenerate fpu and soft-fp ULPs. Based on results from HSDK-4xD board with GCC 14 build. Including new tests added by 07972839108495245d8b93ca546462b3f4dad47f.

Convert to autoconf 2.72 (vanilla release, no distribution patches)

2024-06-17T19:15:28Z

As discussed at the patch review meeting Signed-off-by: Andreas K. Hüttel Reviewed-by: Simon Chopin

Implement C23 logp1

2024-06-17T13:47:09Z

C23 adds various function families originally defined in TS 18661-4. Add the logp1 functions (aliases for log1p functions - the name is intended to be more consistent with the new log2p1 and log10p1, where clearly it would have been very confusing to name those functions log21p and log101p). As aliases rather than new functions, the content of this patch is somewhat different from those actually adding new functions. Tests are shared with log1p, so this patch *does* mechanically update all affected libm-test-ulps files to expect the same errors for both functions. The vector versions of log1p on aarch64 and x86_64 are *not* updated to have logp1 aliases (and thus there are no corresponding header, tests, abilist or ulps changes for vector functions either). It would be reasonable for such vector aliases and corresponding changes to other files to be made separately. For now, the log1p tests instead avoid testing logp1 in the vector case (a Makefile change is needed to avoid problems with grep, used in generating the .c files for vector function tests, matching more than one ALL_RM_TEST line in a file testing multiple functions with the same inputs, when it assumes that the .inc file only has a single such line). Tested for x86_64 and x86, and with build-many-glibcs.py.

login: Check default sizes of structs utmp, utmpx, lastlog

2024-04-19T12:38:17Z

The default is for ports with a 64-bit time_t. Ports with a 32-bit time_t or with __WORDSIZE_TIME64_COMPAT32=1 need to override it. Reviewed-by: Adhemerval Zanella

string: Use builtins for ffs and ffsll

2024-02-01T12:31:33Z

It allows to remove a lot of arch-specific implementations. Checked on x86_64, aarch64, powerpc64. Reviewed-by: Carlos O'Donell

Update copyright dates with scripts/update-copyrights

2024-01-01T18:53:40Z

configure: Use autoconf 2.71

2023-07-17T14:08:10Z

Bump autoconf requirement to 2.71 to allow regenerating configure on more recent distributions. autoconf 2.71 has been in Fedora since F36 and is the current version in Debian stable (bookworm). It appears to be current in Gentoo as well. All sysdeps configure and preconfigure scripts have also been regenerated; all changes are trivial transformations that do not affect functionality. Signed-off-by: Siddhesh Poyarekar Reviewed-by: Carlos O'Donell

Fix misspellings in sysdeps/ -- BZ 25337

2023-05-30T23:02:29Z

ARC:fpu: add extra capability check before use of sqrt and fma builtins

2023-02-17T19:17:58Z

Add extra check for compiler definitions to ensure that compiler provides sqrt and fma hw fpu instructions else use software implementation. As divide/sqrt and FMA hw support from CPU side is optional, the compiler can be configured by options to generate hw FPU instructions, but without use of FDDIV, FDSQRT, FSDIV, FSSQRT, FDMADD and FSMADD instructions. In this case __builtin_sqrt and __builtin_sqrtf provided by compiler can't be used inside the glibc code, as these builtins are used in implementations of sqrt() and sqrtf() functions but at the same time these builtins unfold to sqrt() and sqrtf(). So it is possible to receive code like that: 0001c4b4 <__ieee754_sqrtf>: 1c4b4: 0001 0000 b 0 ;1c4b4 <__ieee754_sqrtf> The same is also true for __builtin_fma and __builtin_fmaf. Reviewed-by: Adhemerval Zanella

Update copyright dates with scripts/update-copyrights

2023-01-06T21:14:39Z