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14 hourstst-fopen-threaded.c: Delete temporary fileH.J. Lu1-2/+12
Update tst-fopen-threaded.c to call support_create_temp_directory to create a temporary directory and open "file" in the temporary directory, instead of using /tmp/openclosetest and leaving it behind. This partially fixes BZ #33182. Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
21 hourserrlist: add missing entries for MIPS/SPARCLuca Boccassi1-0/+9
These are defined in the kernel headers but missing from the list of names, so strerrorname_np() returns NULL. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/mips/include/uapi/asm/errno.h#n95 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/sparc/include/uapi/asm/errno.h#n55 Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
4 daysi386: Consolidate subdirectory check on elf and csuH.J. Lu1-18/+9
Consolidate subdirectory check on elf and csu to avoid checking them more than once. Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Sam James <sam@gentoo.org>
4 daysx86-64: Consolidate subdirectory check on elf and csuH.J. Lu1-15/+10
Consolidate subdirectory check on elf and csu to avoid checking them more than once. Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Sam James <sam@gentoo.org>
7 daystst-cond23: return EXIT_UNSUPPORTED on missing clock selectionSamuel Thibault1-1/+1
11 daysaarch64: Fix aarch64_be build with --enable-sframeAdhemerval Zanella1-1/+1
12 dayssframe: Add support for SFRAME_F_FDE_FUNC_START_PCREL flagClaudiu Zissulescu3-31/+118
The Sframe V2 has a new errata which introduces the SFRAME_F_FDE_FUNC_START_PCREL flag. This flag indicates the encoding of the SFrame FDE function start address field like this: - if set, sfde_func_start_address field contains the offset in bytes to the start PC of the associated function from the field itself. - if unset, sfde_func_start_address field contains the offset in bytes to the start PC of the associated function from the start of the SFrame section. Signed-off-by: Claudiu Zissulescu <claudiu.zissulescu-ianculescu@oracle.com> Reviewed-by: Sam James <sam@gentoo.org>
12 daysDisable SFrame support by defaultAdhemerval Zanella7-85/+10
And add extra checks to enable for binutils 2.45 and if the architecture explicitly enables it. When SFrame is disabled, all the related code is also not enabled for backtrace() and _dl_find_object(), so SFrame backtracking is not used even if the binary has the SFrame segment. This patch also adds some other related fixes: * Fixed an issue with AC_CHECK_PROG_VER, where the READELF_SFRAME usage prevented specifying a different readelf through READELF environment variable at configure time. * Add an extra arch-specific internal definition, libc_cv_support_sframe, to disable --enable-sframe on architectures that have binutils but not glibc support (s390x). * Renamed the tests without the .sframe segment and move the tst-backtrace1 from pthread to debug. * Use the built compiler strip to remove the .sframe segment, instead of the system one (which might not support SFrame). Checked on x86_64-linux-gnu and aarch64-linux-gnu. Reviewed-by: Sam James <sam@gentoo.org>
2025-07-21Revert "Linux: Keep termios ioctl constants strictly internal"Florian Weimer17-111/+260
This reverts commit 3d3572f59059e2b19b8541ea648a6172136ec42e. Reason for revert: TCGETS etc. work to some extent on at least a subset of architectures, so there is no pressing need to force applications off them. Removal of the macros breaks building the sanitizers, impacting both GCC and LLVM. Reviewed-by: Sam James <sam@gentoo.org>
2025-07-18x86-64: Properly compile ISA optimized modf and modffH.J. Lu12-47/+90
There are 3 variants of modf and modff: SSE2, SSE4.1 and AVX. s_modf.c and s_modff.c include the generic implementation compiled with the minimum x86 ISA level. The IFUNC selector is used only if the minimum ISA level is less than AVX. SSE4.1 variant is included only if the ISA level is less than SSE4.1. AVX variant is included only the ISA level is less than AVX. AVX variant should be compiled with -mavx, not -msse2avx -DSSE2AVX which are used to encode SSE assembly sources with EVEX encoding. The routines that are shared between libc and libm should use different rules to avoid using the same MODULE_NAME, to avoid potential issues like BZ #33165 where __stack_chk_fail not being routed to the internal symbol. Tested with -march=x86-64, -march=x86-64-v2, -march=x86-64-v3 and -march=x86-64-v4. This fixes BZ #33165 and BZ #33173. Co-authored-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-07-17x86-64: Compile ISA versions of modf/modff with -fno-stack-protectorH.J. Lu1-4/+11
Since modf and modff are compiled into both libc and libm, when glibc is configured with --enable-stack-protector=all, ISA versions of modf and modff should be compiled with -fno-stack-protector to avoid calling __stack_chk_fail via PLT in libc.so. This fixes BZ #33165. Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Andreas K. Huettel <dilfridge@gentoo.org>
2025-07-14elf: Add SFrame stack tracingClaudiu Zissulescu6-0/+1258
This patch adds the necessary bits to enable stack tracing using SFrame. In the case the new SFrame stack tracing procedure doesn't find SFrame related info, the stack tracing falls back on default Dwarf implementation. The new SFrame stack tracing procedure is added to debug/backtrace.c file, the support functions are added in sysdeps folder, namely sframe.h, read-sframe.c and read-sfame.h. Signed-off-by: Claudiu Zissulescu <claudiu.zissulescu-ianculescu@oracle.com> Reviewed-by: DJ Delorie <dj@redhat.com>
2025-07-14aarch64: Add SFrame support for aarch64 architectureClaudiu Zissulescu1-0/+78
The SFrame is supported for AArch64 architecture. Enable SFrame stack tracer for AArch64 too. Signed-off-by: Claudiu Zissulescu <claudiu.zissulescu-ianculescu@oracle.com> Reviewed-by: DJ Delorie <dj@redhat.com>
2025-07-14x86: Add SFrame support for x86 architectureClaudiu Zissulescu1-0/+76
The SFrame is well supported by x86 architecture since binutils 2.41. Enable it to be used as default frame tracer. Signed-off-by: Claudiu Zissulescu <claudiu.zissulescu-ianculescu@oracle.com> Reviewed-by: DJ Delorie <dj@redhat.com>
2025-07-11x86_64: Optimize modf/modff for x86_64-v2Adhemerval Zanella10-0/+123
The SSE4.1 provides a direct instruction for trunc, which improves modf/modff performance with a less text size. On Ryzen 9 (zen3) with gcc 14.2.1: x86_64-v2 reciprocal-throughput master patch difference workload-0_1 7.9610 7.7914 2.13% workload-1_maxint 9.4323 7.8021 17.28% workload-maxint_maxfloat 8.7379 7.8049 10.68% workload-integral 7.9492 7.7991 1.89% latency master patch difference workload-0_1 7.9511 10.8910 -36.97% workload-1_maxint 15.8278 10.9048 31.10% workload-maxint_maxfloat 11.3495 10.9139 3.84% workload-integral 11.5938 10.9071 5.92% x86_64-v3 reciprocal-throughput master patch difference workload-0_1 8.7522 7.9781 8.84% workload-1_maxint 9.6690 7.9872 17.39% workload-maxint_maxfloat 8.7634 7.9857 8.87% workload-integral 8.7397 7.9893 8.59% latency master patch difference workload-0_1 8.7447 9.5589 -9.31% workload-1_maxint 13.7480 9.5690 30.40% workload-maxint_maxfloat 10.0092 9.5680 4.41% workload-integral 9.7518 9.5743 1.82% For x86_64-v1 the optimization is done through a new ifunc selector. The avx is to follow other SSE4_1 optimization (like trunc) to avoid the ifunc for x86_64-v3. Checked on x86_64-linux-gnu. Tested-by: Carlos O'Donell <carlos@redhat.com> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2025-07-11Linux: Keep termios ioctl constants strictly internalFlorian Weimer17-260/+111
Undefine TCGETS, TCGETS2, and related ioctl constants in the installed headers. Extract the correct constants (using the kernel type definitions) automatically from the UAPI headers. The kernel constants are available under KERNEL_* names during the glibc build, computed using assembler constant extraction mechanism. Alpha may have to use TCGETS instead of TCGETS2 because TCTGETS2 became available in Linux 4.20 only. Introduce ARCH_TCGETS to make this choice explict. To support emulation on powerpc, glibc versions of the termios constants are added to the emulation code in internal-ioctl.h. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-07-10Remove termios2 ioctl defintions from public headersAndreas Schwab2-41/+12
The use of the termios2 ioctl interface is an implementation detail which should not bleed into public headers. Remove the PowerPC version of <bits/ioctls.h> and define the termios2 ioctl numbers in <termios_arch.h> instead. Also remove the include check from there which is unneeded in an internal header.
2025-07-09x86: Avoid vector/r16-r31 registers and memcpy/memset in mcount_internalH.J. Lu2-0/+8
Since mcount_internal is called from mcount/__fentry__ which preserve only RAX, RCX, RDX, RSI, RDI, R8 and R9, compile mcount.c with -fno-tree-loop-distribute-patterns -mgeneral-regs-only -mno-apxf to void vector/r16-r31 registers and memcpy/memset in mcount_internal. This fixes BZ #33134. Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Andreas K. Huettel <dilfridge@gentoo.org>
2025-07-06htl: move __pthread_get_cleanup_stack to libcSamuel Thibault8-21/+13
This fixes the cleanup call from __qsort_r
2025-07-06htl: Drop ptr_pthread_once from pthread_functionsSamuel Thibault1-2/+0
It is unused since ccdb68e829a3 ("htl: move pthread_once into libc")
2025-07-05elf: Restore support for _r_debug interpositions and copy relocationsFlorian Weimer1-0/+4
The changes in commit a93d9e03a31ec14405cb3a09aa95413b67067380 ("Extend struct r_debug to support multiple namespaces [BZ #15971]") break the dyninst dynamic instrumentation tool. It brings its own definition of _r_debug (rather than a declaration). Furthermore, it turns out it is rather hard to use the proposed handshake for accessing _r_debug via DT_DEBUG. If applications want to access _r_debug, they can do so directly if the relevant code has been built as PIC. To protect against harm from accidental copy relocations due to linker relaxations, this commit restores copy relocation support by adjusting both copies if interposition or copy relocations are in play. Therefore, it is possible to use a hidden reference in ld.so to access _r_debug. Only perform the copy relocation initialization if libc has been loaded. Otherwise, the ld.so search scope can be empty, and the lookup of the _r_debug symbol mail fail. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2025-07-05elf: Introduce _dl_debug_change_stateFlorian Weimer1-2/+12
It combines updating r_state with the debugger notification. The second change to _dl_open introduces an additional debugger notification for dlmopen, but debuggers are expected to ignore it. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2025-07-05elf: Introduce separate _r_debug_array variableFlorian Weimer1-2/+0
It replaces the ns_debug member of the namespaces. Previously, the base namespace had an unused ns_debug member. This change also fixes a concurrency issue: Now _dl_debug_initialize only updates r_next of the previous namespace's r_debug after the new r_debug is initialized, so that only the initialized version is observed. (Client code accessing _r_debug will benefit from load dependency tracking in CPUs even without explicit barriers.) Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2025-07-05hurd: Mark more xfails for missing RLIMIT_AS supportSamuel Thibault1-0/+1
2025-07-04Linux: Fix typo in comment in termios_internals.hFlorian Weimer1-1/+1
2025-06-30stdlib: Fix __libc_message_impl iovec size (BZ 32947)Adhemerval Zanella1-14/+18
The iovec size should account for all substrings between each conversion specification. For the format: "abc %s efg" The list of substrings are: ["abc ", arg, " efg] which is 2 times the number of maximum arguments *plus* one. This issue triggered 'out of bounds' errors by stdlib/tst-bz20544 when glibc is built with experimental UBSAN support [1]. Besides adjusting the iovec size, a new runtime and check is added to avoid wrong __libc_message_impl usage. Checked on x86_64-linux-gnu. [1] https://sourceware.org/git/?p=glibc.git;a=shortlog;h=refs/heads/azanella/ubsan-undef Co-authored-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2025-06-30AArch64: Avoid memset ifunc in cpu-features.c [BZ #33112]Wilco Dijkstra1-0/+1
During early startup memcpy or memset must not be called since many targets use ifuncs for them which won't be initialized yet. Security hardening may use -ftrivial-auto-var-init=zero which inserts calls to memset. Redirect memset to memset_generic by including dl-symbol-redir-ifunc.h in cpu-features.c. This fixes BZ #33112. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-06-25powerpc: Remove modf optimizationAdhemerval Zanella4-62/+4
The generic implementation is slight more optimized than the powerpc one, where it has a more optimized inf/nan check (by not using FP unit checks, along with branch prediction hints), and removed one branch by issuing trunc instead of a combination of floor/ceil (which also generated less code). On power10 with gcc 14.2.1: reciprocal-throughput master patch difference workload-0_1 1.1351 0.9067 20.12% workload-1_maxint 1.4230 0.9040 36.47% workload-maxint_maxfloat 1.5038 0.9076 39.65% workload-integral 1.1280 0.9111 19.23% latency master patch difference workload-0_1 1.1440 2.7117 -137.03% workload-1_maxint 4.0556 2.7070 33.25% workload-maxint_maxfloat 3.2122 2.7164 15.43% workload-integral 3.2381 2.7281 15.75% Checked on powerpc64le-linux-gnu. Reviewed-by: Sachin Monga <smonga@linux.ibm.com>
2025-06-25powerpc: Remove modff optimizationAdhemerval Zanella5-57/+12
The generic implementation is slight more optimized than the powerpc one, where it has a more optimized inf/nan check (by not using FP unit checks, along with branch prediction hints), and removed one branch by issuing trunc instead of a combination of floor/ceil (which also generated less code). On power10 with gcc 14.2.1: reciprocal-throughput master patch difference workload-0_1 1.5210 1.3942 8.34% workload-1_maxint 2.0926 1.3940 33.38% workload-maxint_maxfloat 1.7851 1.3940 21.91% workload-integral 1.5216 1.3941 8.37% latency master patch difference workload-0_1 1.5928 2.6337 -65.35% workload-1_maxint 3.2929 2.6337 20.02% workload-maxint_maxfloat 1.9697 2.6341 -33.73% workload-integral 2.0597 2.6337 -27.87% Checked on powerpc64le-linux-gnu. Reviewed-by: Sachin Monga <smonga@linux.ibm.com>
2025-06-24Linux: Convert '__close_nocancel_nostatus' to a standalone handlerMaciej W. Rozycki4-8/+34
Make '__close_nocancel_nostatus' standalone. This is a generic version analogous to '__close_nocancel'. Platforms may choose to implement an inline variant instead where the syscall invocation code sequence is short enough to be beneficial over a function call. Reviewed-by: Florian Weimer <fweimer@redhat.com>
2025-06-24Linux: Fix '__close_nocancel_nostatus' clobbering 'errno' [BZ #33035]Maciej W. Rozycki1-1/+1
Fix fallout from commit c181840c93d3 ("Consolidate non cancellable close call") that caused '__close_nocancel_nostatus' to clobber 'errno' on a close(2) failure, a 2.27 regression. The problem came from a rewrite from 'close_not_cancel_no_status' to '__close_nocancel_nostatus' switching from an inline implementation that used INTERNAL_SYSCALL macro (which stays away from 'errno') to a call to '__close_nocancel' function that uses INLINE_SYSCALL_CALL macro (which does poke at 'errno'). Implement '__close_nocancel_nostatus' in terms of INTERNAL_SYSCALL_CALL then, which leaves 'errno' intact. Reviewed-by: Florian Weimer <fweimer@redhat.com>
2025-06-23riscv: linux: Add support for getrandom vDSOXi Ruoyao1-1/+2
Linux kernel >= 6.16 has getrandom() in vDSO for RISC-V. Enable the use of it in Glibc so it would benefit the programs using the Glibc high quality random number functions. Link: https://git.kernel.org/torvalds/c/ee0d03053e70 Signed-off-by: Xi Ruoyao <xry111@xry111.site> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-06-23powerpc: use .machine power10 in POWER10 assembler sourcesAndreas Schwab5-5/+5
They were misattributed as POWER9 sources.
2025-06-21hurd: Remove a duplicate entry from 'tests-unsupported'.Collin Funk1-3/+0
When building on GNU/Hurd the following warnings repeat themselves: ../Rules:400: target '/home/collin/obj/glibc/io/test-lfs.out' given more than once in the same rule ../Rules:400: target '/home/collin/obj/glibc/io/test-lfs.out' given more than once in the same rule This is because commit 73b854e955 (hurd: Mark more memory-hungry tests as unsupported, 2025-01-12) added it to 'tests-unsupported' even though it was already added by decf02d382 (hurd: Mark two tests as unsupported, 2023-04-13). Message-ID: <54dc6bf7e0dbedb1b19356f41fec843c1c523b11.1750130025.git.collin.funk1@gmail.com>
2025-06-21hurd: Fix redefinition of 'P2ALIGN'.Collin Funk1-0/+5
When building on GNU/Hurd warnings like the following occur: ../sysdeps/x86_64/multiarch/strnlen-evex-base.S:53:10: warning: "P2ALIGN" redefined 53 | # define P2ALIGN(...) .p2align 4,, 6 | ^~~~~~~ In file included from /usr/include/x86_64-gnu/mach/x86_64/syscall_sw.h:30, from ../sysdeps/mach/sysdep.h:21, from ../sysdeps/mach/x86/sysdep.h:31, from ../sysdeps/x86_64/multiarch/strnlen-evex-base.S:24: /usr/include/x86_64-gnu/mach/x86_64/asm.h:78:9: note: this is the location of the previous definition 78 | #define P2ALIGN(p2) .p2align p2 /* gas-specific */ | ^~~~~~~ The fix is to undefine the macro from system headers in sysdep.h so that it can be properly defined in assembly files where its definition depends on whether string functions are being compiled for wide-characters or not. Message-ID: <721cd3a1bae1a553857db1dd69761a175f611364.1750131904.git.collin.funk1@gmail.com>
2025-06-19x86: Update tst-gnu2-tls2 testsH.J. Lu7-26/+77
Update tst-gnu2-tls2 tests to set XMM0...XMM7 to all 1s in malloc to verify that XMM registers are preserved when _dl_tlsdesc_dynamic is called by clearing vectors with zeroed XMM registers before _dl_tlsdesc_dynamic and using these XMM registers to clear vectors after _dl_tlsdesc_dynamic. This improves the BZ #31372 test. Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Sam James <sam@gentoo.org>
2025-06-19i386: Update ___tls_get_addr to preserve vector registersH.J. Lu19-170/+386
Compiler generates the following instruction sequence for dynamic TLS access: leal tls_var@tlsgd(,%ebx,1), %eax call ___tls_get_addr@PLT CALL instruction is transparent to compiler which assumes all registers, except for EFLAGS, AX, CX, and DX, are unchanged after CALL. But ___tls_get_addr is a normal function which doesn't preserve any vector registers. 1. Rename the generic __tls_get_addr function to ___tls_get_addr_internal. 2. Change ___tls_get_addr to a wrapper function with implementations for FNSAVE, FXSAVE, XSAVE and XSAVEC to save and restore all vector registers. 3. dl-tlsdesc-dynamic.h has: _dl_tlsdesc_dynamic: /* Like all TLS resolvers, preserve call-clobbered registers. We need two scratch regs anyway. */ subl $32, %esp cfi_adjust_cfa_offset (32) It is wrong to use movl %ebx, -28(%esp) movl %esp, %ebx cfi_def_cfa_register(%ebx) ... mov %ebx, %esp cfi_def_cfa_register(%esp) movl -28(%esp), %ebx to preserve EBX on stack. Fix it with: movl %ebx, 28(%esp) movl %esp, %ebx cfi_def_cfa_register(%ebx) ... mov %ebx, %esp cfi_def_cfa_register(%esp) movl 28(%esp), %ebx 4. Update _dl_tlsdesc_dynamic to call ___tls_get_addr_internal directly. 5. Add have-test-mtls-traditional to compile tst-tls23-mod.c with traditional TLS variant to verify the fix. 6. Define DL_RUNTIME_RESOLVE_REALIGN_STACK in sysdeps/x86/sysdep.h. This fixes BZ #32996. Co-Authored-By: Adhemerval Zanella <adhemerval.zanella@linaro.org> Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-06-18math: Simplify and optimize modf implementationAdhemerval Zanella2-52/+70
Refactor the generic implementation to use math_config.h definitions, and add an alternative one if the ABI supports truncf instructions (gated through math-use-builtins-trunc.h). The generic implementation generates similar code on x86_64, while the optimization one for aarch64 (where truncf is supported as a builtin by through frintz), the improvements are: reciprocal-throughput master patch difference workload-0_1 3.0595 3.0698 -0.34% workload-1_maxint 5.1747 3.0542 40.98% workload-maxint_maxfloat 3.4391 3.0349 11.75% workload-integral 3.2732 3.0293 7.45% latency master patch difference workload-0_1 3.5267 4.7107 -33.57% workload-1_maxint 6.9074 4.7282 31.55% workload-maxint_maxfloat 3.7210 4.7506 -27.67% workload-integral 3.8634 4.8137 -24.60% Checked on aarch64-linux-gnu and x86_64-linux-gnu. Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
2025-06-18math: Simplify and optimize modff implementationAdhemerval Zanella2-45/+71
Refactor the generic implementation to use math_config.h definitions, and add an alternative one if the ABI supports truncf instructions (gated through math-use-builtins-trunc.h). The generic implementation generates similar code for x86_64, while the optimization path aarch64 (where truncf is supported as a builtin) through frintz), the improvements are: reciprocal-throughput master patch difference workload-0_1 3.0740 3.0326 1.35% workload-1_maxint 5.2231 3.0436 41.73% workload-maxint_maxfloat 4.0962 3.0551 25.42% workload-integral 3.7093 3.0612 17.47% latency master patch difference workload-0_1 3.5521 4.7313 -33.20% workload-1_maxint 6.7148 4.7314 29.54% workload-maxint_maxfloat 4.0458 4.7518 -17.45% workload-integral 3.9719 4.7427 -19.40% Checked on aarch64-linux-gnu and x86_64-linux-gnu. Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
2025-06-18AArch64: Improve codegen SVE log1p helperLuna Lamb3-24/+71
Improve codegen by packing coefficients. 4% and 2% improvement in throughput microbenchmark on Neoverse V1, for acosh and atanh respectively. Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
2025-06-18AArch64: Optimise SVE FP64 HyperbolicsDylan Fleming3-165/+289
Reworke SVE FP64 hyperbolics to use the SVE FEXPA instruction. Also update the special case handelling for large inputs to be entirely vectorised. Performance improvements on Neoverse V1: cosh_sve: 19% for |x| < 709, 5x otherwise sinh_sve: 24% for |x| < 709, 5.9x otherwise tanh_sve: 12% for |x| < 19, 9x otherwise Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
2025-06-18AArch64: Optimize SVE exp functionsDylan Fleming4-155/+211
Improve performance of SVE exps by making better use of the SVE FEXPA instruction. Performance improvement on Neoverse V1: exp2_sve: 21% exp2f_sve: 24% exp10f_sve: 23% expm1_sve: 25% Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
2025-06-18sparc: Fix sparc32 Fix argument passing to __libc_start_main (BZ 32981)Adhemerval Zanella1-3/+4
Commit 404526ee2e58f3c075253943ddc9988f4bd6b80c changed _start to write the last argument to __libc_start_main without taking into consideration that the function did not create a full stack frame, which leads to overwriting the argv[0].
2025-06-18Fix termios related targetsAndreas Schwab1-9/+18
Move Linux-specific termios headers and tests from misc to termios subdir and install newly added bits/termios-cbaud.h.
2025-06-18aarch64: simplify calls to __libc_arm_za_disable in assemblyYury Khrustalev3-42/+27
There is no functional change in this patch. We remove stores and loads to stack, return address signing, and redundant CFI directives before and after call to __libc_arm_za_disable(). The __libc_arm_za_disable implementation follows special calling convention that allows to avoid most of the operations that would be necessary for a call to a normal function (see [1] for details). First, we rely on __libc_arm_za_disable() not clobbering certain registers, and we put return address into one of these registers. Now we don't need to store it on stack, so we don't need to sign return address using PAC. Second, as a result of the above, we don't need to update the CFI offset. This patch provides small optimisation avoiding unnecessary store and load on stack also simplifies assembly code and CFI directives. [1]: https://github.com/ARM-software/abi-aa/blob/main/aapcs64/aapcs64.rst Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-06-18aarch64: GCS: use internal struct in __alloc_gcsYury Khrustalev3-8/+28
No functional change here, just a small refactoring to simplify using __alloc_gcs() for allocating shadow stacks. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-06-18powerpc: Remove assembler workaroundsAndreas Schwab4-101/+34
Now that we require at least binutils 2.39 the support for POWER9 and POWER10 instructions can be assumed.
2025-06-17Add TCPI_OPT_USEC_TS from Linux 6.14 and TCPI_OPT_TFO_CHILD from 6.15 to ↵Jeremy Harris1-0/+3
netinet/tcp.h. This patch adds the TCPI_OPT_USEC_TS constant from Linux 6.14 to sysdeps/gnu/netinet/tcp.h This patch adds the TCPI_OPT_TFO_CHILD constant from Linux 6.15 to sysdeps/gnu/netinet/tcp.h Signed-off-by: Jeremy Harris <jgh@exim.org> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2025-06-17linux/termios: regression test for termios speed functionsH. Peter Anvin (Intel)2-0/+593
Test that runs through a fairly large combination of the various termios speed functions, for the new speed_t interface, for the old speed_t interface (if enabled), and for the new baud_t interface. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
2025-06-17termios: unify the naming of the termios speed fieldsH. Peter Anvin (Intel)2-4/+18
The generic code has __ispeed and __ospeed; Linux has c_ispeed and c_ospeed. Use an anonymous union member to allow both set of names on all platforms. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
generated by cgit v1.1 at 2025-08-05 11:33:20 +0000