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2025-01-17math: update arm ulpsAndreas K. Hüttel1-15/+13
CC="gcc -O2 -pipe -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=hard" linux32 chroot on aarch64 Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org>
2025-01-16Linux: Add tests that check that TLS and rseq area are separateFlorian Weimer6-0/+213
The new test elf/tst-rseq-tls-range-4096-static reliably detected the extra TLS allocation problem (tcb_offset was dropped from the allocation size) on aarch64. It also failed with a crash in dlopen *before* the extra TLS changes, so TLS alignment with static dlopen was already broken. Reviewed-by: Michael Jeanson <mjeanson@efficios.com>
2025-01-16Linux: Fixes for getrandom fork handlingFlorian Weimer1-3/+23
Careful updates of grnd_alloc.len are required to ensure that after fork, grnd_alloc.states does not contain entries that are also encountered by __getrandom_reset_state in TCBs. For the same reason, it is necessary to overwrite the TCB state pointer with NULL before updating grnd_alloc.states in __getrandom_vdso_release. Before this change, different TCBs could share the same getrandom state after multi-threaded fork. This would be a critical security bug (predictable randomness) if not caught during development. The additional check in stdlib/tst-arc4random-thread makes it more likely that the test fails due to the bugs mentioned above. Both __getrandom_reset_state and __getrandom_vdso_release could put reserved NULL pointers into the states array. This is also fixed with this commit. After these changes, no null pointers were observed in the states array during testing. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-01-15arc: Update libm test ulpsPavel Kozlov2-4/+143
Update fpu and nofpu ULPs. Regenerated on HSDK-4xD board running Linux 6.12.7 / GCC 14.2.0.
2025-01-14affinity-inheritance: Overallocate CPU setsStefan Liebler1-3/+4
Some kernels on S390 appear to return a CPU affinity mask based on configured processors rather than the ones online. Overallocate the CPU set to match that, but operate only on the ones online. Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org> Co-authored-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2025-01-14mach: Fix fallthrough warningSamuel Thibault1-1/+1
gcc would not take the /* FALLTHROUGH */ inside the #ifdef
2025-01-13sh4: ensure FPSCR.PR==0 when executing FRCHG [BZ #27543]mirabilos3-0/+10
If the bit is not 0, the operations FRCHG and FSCHG are undefined and cause a trap; qemu now checks for this as well, so we set it to 0 temporarily and restore the old value in getcontext afterwards (setcontext/swapcontext already do so). From the discussion in the bugreport, this can probably be optimised in one place but none of the people involved are SH4 assembly experts, this patch is field-tested, and it’s not a code path run often. The other question, what happens if a signal occurs while the bit is temporarily 0, is also still unsolved, but to fix that a kernel change is most likely needed; this patch changes a certain trap on many CPUs for a hard-to-get trap in a signal handler if a signal is delivered during the few instructions the PR bit is temporarily set to 0, so it’s not a regression for most users. See BZ and https://bugs.launchpad.net/qemu/+bug/1796520 for related discussion, references and review comments. Signed-off-by: mirabilos <tg@debian.org> Reviewed-by: Oleg Endo <olegendo@gcc.gnu.org> Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-01-13aarch64: Use 64-bit variable to access the special registersAdhemerval Zanella5-15/+30
clang issues: error: value size does not match register size specified by the constraint and modifier [-Werror,-Wasm-operand-widths] while tryng to use 32 bit variables with 'mrs' to get/set the fpsr, dczid_el0, and ctr.
2025-01-12hurd: Set _POSIX_MONOTONIC_CLOCK to 200809LSamuel Thibault1-1/+1
Now that CLOCK_MONOTONIC is supported.
2025-01-12hurd: Add CLOCK_MONOTONIC to clock_nanosleepSamuel Thibault1-5/+5
2025-01-12mach: Add CLOCK_MONOTONIC case in clock_gettime()Zhaoming Luo3-0/+56
The Mach RPC host_get_uptime64() is implemented. It returns the elapsed time value since bootup. See https://git.savannah.gnu.org/cgit/hurd/gnumach.git/commit/?id=fc494bfe3fb6363e1077dc035eb119970d84a9d1 In this patch, the RPC is used to implement the monotonic clock for mach. * config.h.in: Add HAVE_HOST_GET_UPTIME64 config entry * sysdeps/mach/clock_gettime.c: Add CLOCK_MONOTONIC case * sysdeps/mach/configure: Check the existence of host_get_uptime64 RPC * sysdeps/mach/configure.ac: Check the existence of host_get_uptime64 RPC Message-ID: <20250106043907.1046-1-zhmingluo@163.com>
2025-01-12hurd: Mark more memory-hungry tests as unsupportedSamuel Thibault1-0/+1
until RLIMIT_AS support gets commited in gnumach.
2025-01-12hurd: Mark more memory-hungry tests as unsupportedSamuel Thibault1-0/+5
until RLIMIT_AS support gets commited in gnumach.
2025-01-12hurd: Mark tst-tls-allocation-failure-static-patched as supportedSamuel Thibault1-3/+0
The failure was not due to RLIMIT_AS but unsupported intentional early abort.
2025-01-12hurd: Cope with signals sent to ourself earlySamuel Thibault1-0/+10
Typically when aborting during initialization, before signals are set up.
2025-01-12x86-64: Cast __rseq_offset to long long int [BZ #32543]H.J. Lu1-6/+6
commit 494d65129ed5ae1154b75cc189bbdde5e9ecf1df Author: Michael Jeanson <mjeanson@efficios.com> Date: Thu Aug 1 10:35:34 2024 -0400 nptl: Introduce <rseq-access.h> for RSEQ_* accessors added things like asm volatile ("movl %%fs:%P1(%q2),%0" \ : "=r" (__value) \ : "i" (offsetof (struct rseq_area, member)), \ "r" (__rseq_offset)); \ But this doesn't work for x32 when __rseq_offset is negative since the address is computed as FS + 32-bit to 64-bit zero extension of __rseq_offset + offsetof (struct rseq_area, member) Cast __rseq_offset to long long int "r" ((long long int) __rseq_offset)); \ to sign-extend 32-bit __rseq_offset to 64-bit. This is a no-op for x86-64 since x86-64 __rseq_offset is 64-bit. This fixes BZ #32543. Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Florian Weimer <fweimer@redhat.com>
2025-01-11hurd: Mark more memory-hungry tests as unsupportedSamuel Thibault1-0/+22
until RLIMIT_AS support gets commited in gnumach.
2025-01-10Linux: Update internal copy of '<sys/rseq.h>'Michael Jeanson1-0/+11
Sync the internal copy of '<sys/rseq.h>' with the latest Linux kernel 'include/uapi/linux/rseq.h'. Signed-off-by: Michael Jeanson <mjeanson@efficios.com> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Reviewed-by: Florian Weimer <fweimer@redhat.com>
2025-01-10nptl: Move the rseq area to the 'extra TLS' blockMichael Jeanson11-57/+205
Move the rseq area to the newly added 'extra TLS' block, this is the last step in adding support for the rseq extended ABI. The size of the rseq area is now dynamic and depends on the rseq features reported by the kernel through the elf auxiliary vector. This will allow applications to use rseq features past the 32 bytes of the original rseq ABI as they become available in future kernels. Signed-off-by: Michael Jeanson <mjeanson@efficios.com> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Reviewed-by: Florian Weimer <fweimer@redhat.com>
2025-01-10nptl: Introduce <rseq-access.h> for RSEQ_* accessorsMichael Jeanson4-0/+239
In preparation to move the rseq area to the 'extra TLS' block, we need accessors based on the thread pointer and the rseq offset. The ONCE variant of the accessors ensures single-copy atomicity for loads and stores which is required for all fields once the registration is active. A separate header is required to allow including <atomic.h> which results in an include loop when added to <tcb-access.h>. Signed-off-by: Michael Jeanson <mjeanson@efficios.com> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Reviewed-by: Florian Weimer <fweimer@redhat.com>
2025-01-10nptl: add rtld_hidden_proto to __rseq_size and __rseq_offsetMichael Jeanson2-15/+28
This allows accessing the internal aliases of __rseq_size and __rseq_offset from ld.so without ifdefs and avoids dynamic symbol binding at run time for both variables. Signed-off-by: Michael Jeanson <mjeanson@efficios.com> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Reviewed-by: Florian Weimer <fweimer@redhat.com>
2025-01-10Add Linux 'extra TLS'Michael Jeanson1-0/+71
Add the Linux implementation of 'extra TLS' which will allocate space for the rseq area at the end of the TLS blocks in allocation order. Signed-off-by: Michael Jeanson <mjeanson@efficios.com> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Reviewed-by: Florian Weimer <fweimer@redhat.com>
2025-01-10Add generic 'extra TLS'Michael Jeanson1-0/+46
Add the logic to append an 'extra TLS' block in the TLS block allocator with a generic stub implementation. The duplicated code in 'csu/libc-tls.c' and 'elf/dl-tls.c' is to handle both statically linked applications and the ELF dynamic loader. Signed-off-by: Michael Jeanson <mjeanson@efficios.com> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Reviewed-by: Florian Weimer <fweimer@redhat.com>
2025-01-10nptl: Add rseq auxvalsMichael Jeanson5-9/+49
Get the rseq feature size and alignment requirement from the auxiliary vector for use inside the dynamic loader. Use '__rseq_size' directly to store the feature size. If the main thread registration fails or is disabled by tunable, reset the value to 0. This will be used in the TLS block allocator to compute the size and alignment of the rseq area block for the extended ABI support. Signed-off-by: Michael Jeanson <mjeanson@efficios.com> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Reviewed-by: Florian Weimer <fweimer@redhat.com>
2025-01-10Add missing include guards to <dl-tls.h>Florian Weimer5-0/+20
Some architecture-specific variants lack header inclusion guards. Add them for consistency with the generic version.
2025-01-09elf: Always define TLS_TP_OFFSETFlorian Weimer4-0/+12
This will be needed to compute __rseq_offset outside of the TLS relocation machinery. Reviewed-by: Michael Jeanson <mjeanson@efficios.com>
2025-01-09x86: Add missing #include <features.h> to <thread_pointer.h>Florian Weimer1-0/+2
It is required for __GNUC_PREREQ. Reviewed-by: Michael Jeanson <mjeanson@efficios.com>
2025-01-09Move <thread_pointer.h> to kernel-independent sysdeps directoriesFlorian Weimer11-0/+0
Hurd is expected to use the same thread ABI as Linux. Reviewed-by: Michael Jeanson <mjeanson@efficios.com>
2025-01-09math: Fix acosf when building with gcc <= 11Adhemerval Zanella7-15/+7
GCC <= 11 wrongly assumes the rounding is to nearest and performs a constant folding where it should evaluate since the result is not exact [1]. [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57245
2025-01-09tests: Verify inheritance of cpu affinitySiddhesh Poyarekar2-0/+72
Add a couple of tests to verify that CPU affinity set using sched_setaffinity and pthread_setaffinity_np are inherited by a child process and child thread. Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-01-09s390x: Regenerated ULPsStefan Liebler1-0/+2
ULPs update needed if build with gcc 11.5 or 10.5.
2025-01-09i686: Regenerate multiarch ulpsH.J. Lu1-3/+3
Regenerate i686 multiarch ulps on Intel Core i7-1195G7 compiled with -O2 -march=i686 using GCC 14.2.1. Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
2025-01-08Revert "configure: default to --prefix=/usr on GNU/Linux"DJ Delorie2-7/+2
This reverts commit 81439a116cf48583127ddf1f09809440aa40969a.
2025-01-08riscv: Update nofpu libm test ulpsDarius Rad1-4/+40
Fixes math test failures. Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org>
2025-01-07or1k: Update fpu libm-test-ulpsStafford Horne1-6/+165
2025-01-07math: update powerpc ulps (this time LE)Andreas K. Hüttel1-8/+8
Linux bogsucker 6.1.55-gentoo-dist-hardened #1 SMP Sun Oct 1 18:03:02 UTC 2023 ppc64le POWER9 (architected), altivec supported CHRP IBM pSeries (emulated by qemu) GNU/Linux Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org>
2025-01-07elf: Second ld.so relocation only if libc.so has been loadedFlorian Weimer3-0/+36
Commit 8f8dd904c4a2207699bb666f30acceb5209c8d3f (“elf: rtld_multiple_ref is always true”) removed some code that happened to enable compatibility with programs that do not link against libc.so. Such programs cannot call dlopen or any dynamic linker functions (except __tls_get_addr), so this is not really useful. Still ld.so should not crash with a null-pointer dereference or undefined symbol reference in these cases. In the main relocation loop, call _dl_relocate_object unconditionally because it already checks if the object has been relocated. If libc.so was loaded, self-relocate ld.so against it and call __rtld_mutex_init and __rtld_malloc_init_real to activate the full implementations. Those are available only if libc.so is there, so skip these initialization steps if libc.so is absent. Without libc.so, the global scope can be completely empty. This can cause ld.so self-relocation to fail because if it uses symbol-based relocations, which is why the second ld.so self-relocation is not performed if libc.so is missing. The previous concern regarding GOT updates through self-relocation no longer applies because function pointers are updated explicitly through __rtld_mutex_init and __rtld_malloc_init_real, and not through relocation. However, the second ld.so self-relocation is still delayed, in case there are other symbols being used. Fixes commit 8f8dd904c4a2207699bb666f30acceb5209c8d3f (“elf: rtld_multiple_ref is always true”). Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-01-07Revert "x86_64: Remove unused padding from tcbhead_t"Florian Weimer1-0/+12
This reverts commit 30d3fd7f4f4bc8f767d73ad4e4b005c1bd234310. The padding is required by Chromium's MaybeUpdateGlibcTidCache in sandbox/linux/services/namespace_sandbox.cc. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-01-07hurd: Accept null arguments for utimensat pathnameSamuel Thibault1-5/+11
This follows Linux' behavior, making it a replacement for the futimens interface.
2025-01-07mach: Make clock_nanosleep also check tv_secSamuel Thibault1-0/+1
2025-01-06i386: Update libm-test-ulpsAdhemerval Zanella1-29/+29
gcc version 14.2.1 targeting '-m32 -march=i586'.
2025-01-06nptl: Add <thread_pointer.h> for C-SKYMichael Jeanson1-0/+30
This will be required by the rseq extensible ABI implementation on all Linux architectures exposing the '__rseq_size' and '__rseq_offset' symbols to set the initial value of the 'cpu_id' field which can be used by applications to test if rseq is available and registered. As long as the symbols are exposed it is valid for an application to perform this test even if rseq is not yet implemented in libc for this architecture. Compile tested with build-many-glibcs.py but I don't have access to any hardware to run the tests. Signed-off-by: Michael Jeanson <mjeanson@efficios.com> Reviewed-by: Florian Weimer <fweimer@redhat.com>
2025-01-06nptl: Add <thread_pointer.h> for microblazeMichael Jeanson1-0/+30
This will be required by the rseq extensible ABI implementation on all Linux architectures exposing the '__rseq_size' and '__rseq_offset' symbols to set the initial value of the 'cpu_id' field which can be used by applications to test if rseq is available and registered. As long as the symbols are exposed it is valid for an application to perform this test even if rseq is not yet implemented in libc for this architecture. Compile tested with build-many-glibcs.py but I don't have access to any hardware to run the tests. Signed-off-by: Michael Jeanson <mjeanson@efficios.com> Reviewed-by: Florian Weimer <fweimer@redhat.com>
2025-01-06math: update i686 multiarch ulpsAndreas K. Hüttel1-36/+36
Linux waikiki 6.6.53-gentoo #1 SMP Wed Oct 2 13:21:27 CEST 2024 x86_64 AMD EPYC 7532 32-Core Processor AuthenticAMD GNU/Linux Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org>
2025-01-06hurd: Fix shutdown() errno on non-sockSamuel Thibault1-0/+5
2025-01-06math: update mips64 ulpsAndreas K. Hüttel1-0/+141
Linux matoro-mipsdev 6.12.0-gentoo-mips #2 SMP Tue Nov 19 15:34:04 EST 2024 mips64 Cavium Octeon II V0.10 EBB6800 (CN6880p2.2-1200-AAP) GNU/Linux Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org>
2025-01-06LoongArch: Regenerate preconfigure. [bug 32521]mengqinggang2-0/+2
Add "mtls_descriptor=desc" to preconfigure.ac and regenerate preconfigure. Fix failure: elf/tst-gnu2-tls2. Reported-by: Joseph S. Myers <josmyers@redhat.com> Reported-by: Andreas K. Huettel <dilfridge@gentoo.org>
2025-01-06or1k: Update nofpu libm-test-ulpsStafford Horne1-12/+8
Updates tolerances due to change to use CORE-MATH
2025-01-05math: update alpha ulpsAndreas K. Hüttel1-12/+96
Linux matoro-alphadev 6.12.3-gentoo-alpha #1 Sun Dec 8 04:39:11 EST 2024 alpha EV68CB Titan GNU/Linux Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org>
2025-01-05loongarch: Drop __GI_XXX for strcpy/stpcpy IFUNC implementationsH.J. Lu4-5/+0
There is no need for __GI_XXX symbols, like __GI___strcpy_aligned since __strcpy_aligned is used directly. Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Sam James <sam@gentoo.org>
generated by cgit v1.1 at 2025-09-19 16:39:01 +0000