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* sparc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocsVladimir Mezentsev2017-05-021-0/+6
| | | | | | | | | | | The Studio compiler generates relocation types which are not supported in glibc. Handle these relocs. Tested in sparc64-linux-gnu. No regressions. BZ #21179] * sysdeps/sparc/sparc64/dl-machine.h: Handle R_SPARC_DISP64 and R_SPARC_REGISTER relocations.
* posix: Fix internal p{read,write} plt usageAdhemerval Zanella2017-05-024-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds internal alias for __pread, __pread64, and __pwrite following the already in place one for __pwrite64. This is not used in any implementation but on microblaze on preadv/pwritev fallback (since it does not define __ASSUME_PREADV). In fact it was signaled by commit c35db50ff5 which update the expected localptl.data for the architecture based on resulted value. This patch updates the plt for microblaze now that p{read,write}{64} are correctly routed to use internal alias. Checked on x86_64-linux-gnu and a build for all supported architectures (no all variants although). * include/unistd.h (__pread): Add libc_hidden_proto. (__pread64): Likewise. (__pwrite): Likewise. * sysdeps/unix/sysv/linux/microblaze/localplt.data [libc.so] (__pread64): Remove. * sysdeps/unix/sysv/linux/pread.c (__pread64): Add libc_hidden_weak. * sysdeps/unix/sysv/linux/pread64.c (__pread64): Likewise. * sysdeps/unix/sysv/linux/pwrite.c (__pwrite): Likewise.
* powerpc: Update powerpc-fpu libm-test-ulpsTulio Magno Quites Machado Filho2017-05-021-16/+16
| | | | * sysdeps/powerpc/fpu/libm-test-ulps: Update.
* Add TCP_FASTOPEN_CONNECT from Linux 4.11 to netinet/tcp.h.Joseph Myers2017-05-011-0/+1
| | | | | | | | | This patch adds the TCP_FASTOPEN_CONNECT macro from Linux 4.11 to sysdeps/gnu/netinet/tcp.h. Tested for x86-64. * sysdeps/gnu/netinet/tcp.h (TCP_FASTOPEN_CONNECT): New macro.
* Add PF_SMC, AF_SMC from Linux 4.11 to bits/socket.h.Joseph Myers2017-05-011-1/+3
| | | | | | | | | | | This patch adds the PF_SMC / AF_SMC macros from Linux 4.11 to sysdeps/unix/sysv/linux/bits/socket.h. Tested for x86_64. * sysdeps/unix/sysv/linux/bits/socket.h (PF_SMC): New macro. (PF_MAX): Set to 44. (AF_SMC): New macro.
* powerpc: Fix logbl on power7 [BZ# 21280]Tulio Magno Quites Machado Filho2017-04-281-6/+18
| | | | | | | | | | | | | | | | | 1. Fix the results for negative subnormals by ignoring the signal when normalizing the value. 2. Fix the output when the high part is a power of 2 and the low part is a nonzero number with opposite sign. This fix is based on commit 380bd0fd2418f8988217de950f8b8ff18af0cb2b. After applying this patch, logbl() tests pass cleanly on POWER >= 7. Tested on powerpc, powerpc64 and powerpc64le [BZ #21280] * sysdeps/powerpc/power7/fpu/s_logbl.c (__logbl): Ignore the signal of subnormals and adjust the exponent of power of 2 down when low part has opposite sign.
* powerpc64le: Create divergent sysdep directory for powerpc64le.Paul E. Murphy2017-04-2819-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | float128 on powerpc64le requires the addition of the ieee754/float128 sysdep, whereas powerpc64 doesn't. This requires creating a bunch of submachine and cpu directories and Implies files which just point towards their powerpc64 equivalent. Tested on P7, P8, and generic powerpc64le targets with and without multiarch. * sysdeps/powerpc/powerpc64le/Implies: New file. * sysdeps/powerpc/powerpc64le/fpu/Implies: New file. * sysdeps/powerpc/powerpc64le/fpu/multiarch/Implies: New file. * sysdeps/powerpc/powerpc64le/multiarch/Implies: New file. * sysdeps/powerpc/powerpc64le/power7/Implies: New file. * sysdeps/powerpc/powerpc64le/power7/fpu/Implies: New file. * sysdeps/powerpc/powerpc64le/power7/fpu/multiarch/Implies: New file. * sysdeps/powerpc/powerpc64le/power7/multiarch/Implies: New file. * sysdeps/powerpc/powerpc64le/power8/Implies: New file. * sysdeps/powerpc/powerpc64le/power8/fpu/Implies: New file. * sysdeps/powerpc/powerpc64le/power8/fpu/multiarch/Implies: New file. * sysdeps/powerpc/powerpc64le/power8/multiarch/Implies: New file. * sysdeps/powerpc/powerpc64le/power9/Implies: New file. * sysdeps/powerpc/powerpc64le/power9/fpu/Implies: New file. * sysdeps/powerpc/powerpc64le/power9/fpu/multiarch/Implies: New file. * sysdeps/powerpc/powerpc64le/power9/multiarch/Implies: New file. * sysdeps/powerpc/preconfigure: New file. * sysdeps/unix/sysv/linux/powerpc/powerpc64le/Implies: New file. * sysdeps/unix/sysv/linux/powerpc/powerpc64le/fpu/Implies: New file.
* Add earlyclobber to sqrtt/sqrtf insns.Uros Bizjak2017-04-261-4/+4
| | | | | | | | | | | | When using software completions, we have to prevent assembler to match input and output operands of sqrtt/sqrtf insn. Add earlyclobber to output operand to avoid unwanted operand matching. 2017-04-14 Uros Bizjak <ubizjak@gmail.com> * sysdeps/alpha/fpu/math_private.h (__ieee754_sqrt): Add earlyclobber to output operand of sqrt insn. (__ieee754_sqrtf): Ditto.
* Fix sys/socket.h namespace issues from sys/uio.h inclusion (bug 21426).Joseph Myers2017-04-251-6/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sys/socket.h includes sys/uio.h to get the definition of the iovec structure. POSIX allows sys/socket.h to make all sys/uio.h symbols visible. However, all of sys/uio.h is XSI-shaded, so for non-XSI POSIX this results in conformtest failures (for sys/socket.h and other headers that include it): Namespace violation: "UIO_MAXIOV" Namespace violation: "readv" Namespace violation: "writev" Now, there is some ambiguity in POSIX about what namespace reservations apply in this case - see http://austingroupbugs.net/view.php?id=1127 - but glibc convention would still avoid declaring readv and writev, for example, for feature test macros that don't include them (if only headers from the relevant standard are included), even if such declarations are permitted, so there is a bug here according to glibc conventions. This patch moves the struct iovec definition to a new bits/types/struct_iovec.h header and includes that from sys/socket.h instead of including the whole of sys/uio.h. This fixes the namespace issue; however, three files in glibc that were relying on the implicit inclusion needed to be updated to include sys/uio.h explicitly. So there is a question of whether sys/socket.h should continue to include sys/uio.h under some conditions, such as __USE_XOPEN or __USE_MISC or __USE_XOPEN || __USE_MISC, for greater compatibility with code that (wrongly) expects this optional inclusion to be present there. (I think the three affected files in glibc should still have explicit sys/uio.h inclusions added in any case, however.) Tested for x86_64. [BZ #21426] * misc/bits/types/struct_iovec.h: New file. * misc/Makefile (headers): Add bits/types/struct_iovec.h. * include/bits/types/struct_iovec.h: New file. * bits/uio.h (struct iovec): Replace by inclusion of <bits/types/struct_iovec.h>. * sysdeps/unix/sysv/linux/bits/uio.h (struct iovec): Likewise. * socket/sys/socket.h: Include <bits/types/struct_iovec.h> instead of <sys/uio.h>. * nptl/tst-cancel4.c: Include <sys/uio.h> * posix/test-errno.c: Likewise. * support/resolv_test.c: Likewise. * conform/Makefile (test-xfail-POSIX2008/arpa/inet.h/conform): Remove. (test-xfail-POSIX2008/netdb.h/conform): Likewise. (test-xfail-POSIX2008/netinet/in.h/conform): Likewise. (test-xfail-POSIX2008/sys/socket.h/conform): Likewise.
* posix: Remove ununsed posix_spawn internal assignmentAdhemerval Zanella2017-04-251-16/+14
| | | | | | | | | | The internal 'ret' variable in '__spawni_child' function is not used after assignment in most cases. Checked on x86_64-linux-gnu. * sysdeps/unix/sysv/linux/spawni.c (__spawni_child): Remove ununsed assignment.
* [BZ 21340] add support for POSIX_SPAWN_SETSIDAdhemerval Zanella2017-04-253-1/+13
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for the POSIX_SPAWN_SETSID flag. It was recently accepted by the Austin Group: http://austingroupbugs.net/view.php?id=1044 Checked on x86_64 Daurnimator <quae@daurnimator.com> Adhemerval Zanella <adhemerval.zanella@linaro.org> [BZ #21340] * posix/Makefile (tests): Add tst-posix_spawn-setsid to list of tests. * posix/spawn.h: define POSIX_SPAWN_SETSID flag. * posix/spawnattr_setflags.c (ALL_FLAGS): Add POSIX_SPAWN_SETSID to valid flags. * posix/tst-posix_spawn-setsid.c: Add test for POSIX_SPAWN_SETSID. * sysdeps/mach/hurd/spawni.c (__spawni): Implementation of POSIX_SPAWN_SETSID. * sysdeps/posix/spawni.c (__spawni): Likewise. * sysdeps/unix/sysv/linux/spawni.c (__spawni_child): Likewise. * NEWS: Add note about POSIX_SPAWN_SETSID support.
* Macroize function declarations in math_private.hGabriel F. T. Gomes2017-04-242-170/+146
| | | | | | | | | | | | | | | | | This patch moves the declaration of many floating-point functions from math_private.h to math_private_calls.h and macroize the declaration to be dependent on floating-point type. For each of float, double, and long double, the new header file is included once. This reduces the amount of repetitive boilerplate that will be required when adding float128 versions of these functions. Tested for powerpc64le and s390x. * sysdeps/generic/math_private.h: Move the declaration of many functions to sysdeps/generic/math_private_calls.h. * sysdeps/generic/math_private_calls.h: New file with the declarations of the functions removed from math_private.h macroized by floating-point type.
* S390: Move utf8-utf32-z9.c to multiarch folder and use s390_libc_ifunc_expr ↵Stefan Liebler2017-04-212-103/+160
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | macro. The utf8-utf32-z9.c iconv module is using ifunc and thus the ifunc part should be in multiarch folder. Otherwise ifunc is used even if you configure with --disable-multi-arch. This patch moves the ifunc resolvers to the new file sysdeps/s390/multiarch/utf8-utf32-z9.c. The resolvers are now implemented with s390_libc_ifunc_expr macro instead of using gcc attribute ifunc directly. The ifunc versions are implemented in sysdeps/s390/utf8-utf32-z9.c. Each version is only implemented if needed or supported. Therefore there is a block at beginning of the file which selects the versions which should be defined depending on support for multiarch, vector-support and used minimum architecture level. This block defines HAVE_[FROM|TO]_[C|CU|VX] to 1 or 0. The code below is rearranged and surrounded by #if HAVE_[FROM|TO]_[C|CU|VX] == 1. There is no functional change. The cu instructions are z9 zarch instructions. As the major distros are already using the newer z196 as architecture level set, those instructions can be used as fallback version instead of the c-code. This behaviour is decided at compile time via HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT. ChangeLog: * sysdeps/s390/multiarch/utf8-utf32-z9.c: New File. * sysdeps/s390/utf8-utf32-z9.c: Move ifunc resolvers to multiarch folder and define ifunc versions depending on HAVE_[FROM|TO]_[C|CU|VX]. (HAVE_FROM_C, HAVE_FROM_CU, HAVE_FROM_VX, HAVE_TO_C, HAVE_TO_VX, FROM_LOOP_DEFAULT, FROM_LOOP_C, FROM_LOOP_CU, FROM_LOOP_VX, TO_LOOP_DEFAULT, TO_LOOP_C, TO_LOOP_VX): New Define.
* S390: Move utf16-utf32-z9.c to multiarch folder and use s390_libc_ifunc_expr ↵Stefan Liebler2017-04-212-72/+114
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | macro. The utf16-utf32-z9.c iconv module is using ifunc and thus the ifunc part should be in multiarch folder. Otherwise ifunc is used even if you configure with --disable-multi-arch. This patch moves the ifunc resolvers to the new file sysdeps/s390/multiarch/utf16-utf32-z9.c. The resolvers are now implemented with s390_libc_ifunc_expr macro instead of using gcc attribute ifunc directly. The ifunc versions are implemented in sysdeps/s390/utf16-utf32-z9.c. Each version is only implemented if needed or supported. Therefore there is a block at beginning of the file which selects the versions which should be defined depending on support for multiarch, vector-support and used minimum architecture level. This block defines HAVE_[FROM|TO]_[C|VX] to 1 or 0. The code below is rearranged and surrounded by #if HAVE_[FROM|TO]_[C|VX] == 1. There is no functional change. ChangeLog: * sysdeps/s390/multiarch/utf16-utf32-z9.c: New File. * sysdeps/s390/utf16-utf32-z9.c: Move ifunc resolvers to multiarch folder and define ifunc versions depending on HAVE_[FROM|TO]_[C|VX]. (HAVE_FROM_C, HAVE_FROM_VX, HAVE_TO_C, HAVE_TO_VX, FROM_LOOP_DEFAULT, FROM_LOOP_C, FROM_LOOP_VX, TO_LOOP_DEFAULT, TO_LOOP_C, TO_LOOP_VX): New Define.
* S390: Move utf8-utf16-z9.c to multiarch folder and use s390_libc_ifunc_expr ↵Stefan Liebler2017-04-212-95/+150
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | macro. The utf8-utf16-z9.c iconv module is using ifunc and thus the ifunc part should be in multiarch folder. Otherwise ifunc is used even if you configure with --disable-multi-arch. This patch moves the ifunc resolvers to the new file sysdeps/s390/multiarch/utf8-utf16-z9.c. The resolvers are now implemented with s390_libc_ifunc_expr macro instead of using gcc attribute ifunc directly. The ifunc versions are implemented in sysdeps/s390/utf8-utf16-z9.c. Each version is only implemented if needed or supported. Therefore there is a block at beginning of the file which selects the versions which should be defined depending on support for multiarch, vector-support and used minimum architecture level. This block defines HAVE_[FROM|TO]_[C|CU|VX] to 1 or 0. The code below is rearranged and surrounded by #if HAVE_[FROM|TO]_[C|CU|VX] == 1. There is no functional change. The cu instructions are z9 zarch instructions. As the major distros are already using the newer z196 as architecture level set, those instructions can be used as fallback version instead of the c-code. This behaviour is decided at compile time via HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT. ChangeLog: * sysdeps/s390/multiarch/utf8-utf16-z9.c: New File. * sysdeps/s390/utf8-utf16-z9.c: Move ifunc resolvers to multiarch folder and define ifunc versions depending on HAVE_[FROM|TO]_[C|CU|VX]. (HAVE_FROM_C, HAVE_FROM_CU, HAVE_FROM_VX, HAVE_TO_C, HAVE_TO_VX, FROM_LOOP_DEFAULT, FROM_LOOP_C, FROM_LOOP_CU, FROM_LOOP_VX, TO_LOOP_DEFAULT, TO_LOOP_C, TO_LOOP_VX): New Define.
* S390: Use new s390_libc_ifunc_expr macro in s390 8bit-generic.c.Stefan Liebler2017-04-212-29/+17
| | | | | | | | | | | | | | | | | | | This patch adds s390_libc_ifunc_expr macro which uses the __ifunc base macro in include/libc-symbols.h and lets the user define a generic expression to choose the correct ifunc variant. Furthermore as the base macro is used, the ifunc resolver functions are now also using inhibit_stack_protector. S390 needs its own version due to the hwcap argument of the ifunc resolver. This new macro is now used in iconv code in 8bit-generic.c instead of using gcc attribute ifunc directly. ChangeLog: * sysdeps/s390/multiarch/ifunc-resolve.h (s390_libc_ifunc_expr_init, s390_libc_ifunc_expr): New Define. * sysdeps/s390/multiarch/8bit-generic.c (__to_generic, __from_generic): Use s390_libc_ifunc_expr to define ifunc resolvers.
* Create more sockets with SOCK_CLOEXEC [BZ #15722]Florian Weimer2017-04-193-3/+3
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* Assume that accept4 is always available and worksFlorian Weimer2017-04-197-83/+18
| | | | | | | | | | Simplify the Linux accept4 implementation based on the assumption that it is available in some way. __ASSUME_ACCEPT4_SOCKETCALL was previously unused, so remove it. For ia64, the accept4 system call (and socket call) were backported in kernel version 3.2.18. Reflect this in the installation instructions.
* Fix bits/socket.h IOC* namespace issues (bug 21267).Joseph Myers2017-04-181-0/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | sysdeps/unix/sysv/linux/bits/socket.h includes asm/socket.h. That includes asm/sockios.h, which on MIPS includes asm/ioctl.h, resulting in namespace violations from IOC* macros. bits/socket.h already has code to handle asm/socket.h unconditionally defining macros that are only wanted for __USE_MISC. This patch extends it to handle the IOC* macros as well (always undefining them if not defined when bits/socket.h was included, as I don't think they are part of the intended API even for __USE_MISC). It's possible there should also be a kernel fix - it's not clear to me that IOC* belong in the uapi headers, and even if they do they might best be split out into another header to avoid getting defined by this particular path. But since glibc needs to deal with existing kernel headers, it also seems appropriate to extend the existing workaround to these macros. Tested (compilation only) with build-many-glibcs.py. [BZ #21267] * sysdeps/unix/sysv/linux/bits/socket.h (IOCSIZE_MASK): Undefine if defined by <asm/socket.h> and not previously defined. (IOCSIZE_SHIFT): Likewise. (IOC_IN): Likewise. (IOC_INOUT): Likewise. (IOC_OUT): Likewise.
* x86: Use AVX2 memcpy/memset on Skylake server [BZ #21396]H.J. Lu2017-04-1810-1/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Skylake server, AVX512 load/store instructions in memcpy/memset may lead to lower CPU turbo frequency in certain situations. Use of AVX2 in memcpy/memset has been observed to have improved overall performance in many workloads due to the higher frequency. Since AVX512ER is unique to Xeon Phi, this patch sets Prefer_No_AVX512 if AVX512ER isn't available so that AVX2 versions of memcpy/memset are used on Skylake server. [BZ #21396] * sysdeps/x86/cpu-features.c (init_cpu_features): Set Prefer_No_AVX512 if AVX512ER isn't available. * sysdeps/x86/cpu-features.h (bit_arch_Prefer_No_AVX512): New. (index_arch_Prefer_No_AVX512): Likewise. * sysdeps/x86_64/multiarch/memcpy.S (__new_memcpy): Don't use AVX512 version if Prefer_No_AVX512 is set. * sysdeps/x86_64/multiarch/memcpy_chk.S (__memcpy_chk): Likewise. * sysdeps/x86_64/multiarch/memmove.S (__libc_memmove): Likewise. * sysdeps/x86_64/multiarch/memmove_chk.S (__memmove_chk): Likewise. * sysdeps/x86_64/multiarch/mempcpy.S (__mempcpy): Likewise. * sysdeps/x86_64/multiarch/mempcpy_chk.S (__mempcpy_chk): Likewise. * sysdeps/x86_64/multiarch/memset.S (memset): Likewise. * sysdeps/x86_64/multiarch/memset_chk.S (__memset_chk): Likewise.
* x86: Set Prefer_No_VZEROUPPER if AVX512ER is availableH.J. Lu2017-04-182-2/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | AVX512ER won't be implemented in any Xeon processors and will be in all Xeon Phi processors. Don't check CPU model number when setting Prefer_No_VZEROUPPER for Xeon Phi. Instead, set Prefer_No_VZEROUPPER if AVX512ER is available. It works with current and future Xeon Phi and non-Xeon Phi processors. * sysdeps/x86/cpu-features.c (init_cpu_features): Set Prefer_No_VZEROUPPER if AVX512ER is available. * sysdeps/x86/cpu-features.h (bit_cpu_AVX512PF): New. (bit_cpu_AVX512ER): Likewise. (bit_cpu_AVX512CD): Likewise. (bit_cpu_AVX512BW): Likewise. (bit_cpu_AVX512VL): Likewise. (index_cpu_AVX512PF): Likewise. (index_cpu_AVX512ER): Likewise. (index_cpu_AVX512CD): Likewise. (index_cpu_AVX512BW): Likewise. (index_cpu_AVX512VL): Likewise. (reg_AVX512PF): Likewise. (reg_AVX512ER): Likewise. (reg_AVX512CD): Likewise. (reg_AVX512BW): Likewise. (reg_AVX512VL): Likewise.
* Assume that O_CLOEXEC is always defined and worksFlorian Weimer2017-04-186-79/+11
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* Assume that dup3 is availableFlorian Weimer2017-04-183-3/+0
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* Assume that pipe2 is always availableFlorian Weimer2017-04-181-1/+0
| | | | | The Debian patches for Hurd (which are already required to build glibc before this commit) contain an implementation of pipe2.
* powerpc64: strrchr optimization for power8Rajalakshmi Srinivasaraghavan2017-04-185-1/+510
| | | | | | | P7 code is used for <=32B strings and for > 32B vectorized loops are used. This shows as an average 25% improvement depending on the position of search character. The performance is same for shorter strings. Tested on ppc64 and ppc64le.
* [BZ 21357] unwind-dw2-fde: Call free() outside of unwind mutexRabin Vincent2017-04-171-1/+3
| | | | | | | | | | | | | __deregister_frame_info_bases() calls free() while holding a mutex which is also used from _Unwind_Find_FDE(). This leads to a deadlock if AddressSanitizer uses _Unwind_Backtrace() from its free() implementation. Checked on mips-linux-gnu and x86_64-linux-gnu. [BZ #21357] * sysdeps/generic/unwind-dw2-fde.c (__deregister_frame_info_bases): Call free() outside of mutex.
* Assume that O_NOFOLLOW is always definedFlorian Weimer2017-04-131-2/+0
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* powerpc: Optimized strncat for POWER8Rajalakshmi Srinivasaraghavan2017-04-134-2/+40
| | | | | | | | | | | | | | | | | | With new optimized strnlen for POWER8 [1], this patch adds strncat for power8 to make use of optimized strlen and strnlen. This is faster than POWER7 current implementation for larger strings. Tested on powerpc64 and powerpc64le. [1] https://sourceware.org/ml/libc-alpha/2017-03/msg00491.html * sysdeps/powerpc/powerpc64/multiarch/Makefile (sysdep_routines): Add strncat-power8. * sysdeps/powerpc/powerpc64/multiarch/strncat.c (strncat): Add __strncat_power8 to ifunc list. * sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c (strncat): Add __strncat_power8 to list of strncat functions. * sysdeps/powerpc/powerpc64/multiarch/strncat-power8.c: New file.
* Consolidate Linux mmap implementation (BZ#21270)Adhemerval Zanella2017-04-1223-565/+172
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch consolidates all Linux mmap implementations on default sysdeps/unix/sysv/linux/mmap{64}.c one. To accomodate all required architecture specific requeriments a new internal header is created (mmap_internal.h) where each architecture add its specific code requirements. Currently only x86_64 (to define MMAP_PREPARE to add MAP_32BITS), s390 (which have a different kernel ABI for mmap), m68k (which have variable minimum page sizes), and MIPS n32 (which zero extend the offset to handle negative one correctly) redefine the new header. The patch also fixes BZ#21270 where default mmap64 on architectures which uses mmap2 silent truncates large offsets value (larger than 1 << (page shift + 8 * sizeof (off_t)) or 1<<44 on architectures with 4096 bytes page size). The new consolidate implementation returns EINVAL as allowed by POSIX. It also adds a tests for on current tst-mmap-offset one. I have run a full make check on x86_64, x86_64-32, i686, aarch64, armhf, powerpc, powerpc64le, sparc64, and sparcv9 without any regressions. I also ran some basic tests (tst-mmap-offset) on sh4, m68k, and on qemu simulated MIPS32 and MIPS64. [BZ #21270] * posix/tst-mmap-offset.c (do_prepare): New function. (do_test): Rename to do_test_bz18877 and use FAIL_RET. (do_test_bz21270): New function. * sysdeps/unix/sysv/linux/aarch64/mmap.c: Remove file. * sysdeps/unix/sysv/linux/arm/mmap.c: Remove file. * sysdeps/unix/sysv/linux/generic/wordsize-32/mmap.c: Likewise. * sysdeps/unix/sysv/linux/hppa/mmap.c: Likewise. * sysdeps/unix/sysv/linux/i386/mmap.c: Likewise. * sysdeps/unix/sysv/linux/m68k/mmap.S: Likewise. * sysdeps/unix/sysv/linux/m68k/mmap64.c: Likewise. * sysdeps/unix/sysv/linux/microblaze/mmap.S: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/mmap.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/mmap.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/mmap64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/mmap.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/mmap.S: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/mmap.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/mmap64.c: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/mmap.c: Likewise. * sysdeps/unix/sysv/linux/mmap_internal.h: New file. * sysdeps/unix/sysv/linux/m68k/mmap_internal.h: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/mmap_internal.h: Likewise. * sysdeps/unix/sysv/linux/s390/mmap_internal.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/mmap_internal.h: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list: Remove mmap from auto-generation list. * sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/mmap.c: New file. * sysdeps/unix/sysv/linux/mmap64.c (__mmap64): Add check for invalid offsets and support for mmap2 syscall.
* powerpc: refactor memcmp and memmove IFUNC.Wainer dos Santos Moschetta2017-04-116-52/+19
| | | | | | | | | | | | | | | | | Clean up the IFUNC implementations for powerpc in order to remove unneeded macro definitions. Tested on ppc64le with and without --disable-multi-arch flag. * sysdeps/powerpc/powerpc64/multiarch/memcmp-power4.S: Define the implementation-specific function name and remove unneeded macros definition. * sysdeps/powerpc/powerpc64/multiarch/memcmp-power7.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/memmove-power7.S: Likewise. * sysdeps/powerpc/powerpc64/power4/memcmp.S: Set a default function name if not defined and pass as parameter to macros accordingly. * sysdeps/powerpc/powerpc64/power7/memcmp.S: Likewise. * sysdeps/powerpc/powerpc64/power7/memmove.S: Likewise.
* powerpc: refactor memcpy and mempcpy IFUNC.Wainer dos Santos Moschetta2017-04-1114-119/+46
| | | | | | | | | | | | | | | | | | | | | | | | | Clean up the IFUNC implementations for powerpc in order to remove unneeded macro definitions. Tested on ppc64le with and without --disable-multi-arch flag. * sysdeps/powerpc/powerpc64/multiarch/memcpy-a2.S: Define the implementation-specific function name and remove unneeded macros definition. * sysdeps/powerpc/powerpc64/multiarch/memcpy-cell.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/memcpy-power4.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/memcpy-power6.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/memcpy-power7.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/mempcpy-power7.S: Likewise. * sysdeps/powerpc/powerpc64/a2/memcpy.S: Set a default function name if not defined and pass as parameter to macros accordingly. * sysdeps/powerpc/powerpc64/cell/memcpy.S: Likewise. * sysdeps/powerpc/powerpc64/memcpy.S: Likewise. * sysdeps/powerpc/powerpc64/power4/memcpy.S: Likewise. * sysdeps/powerpc/powerpc64/power6/memcpy.S: Likewise. * sysdeps/powerpc/powerpc64/power7/memcpy.S: Likewise. * sysdeps/powerpc/powerpc64/power7/mempcpy.S: Likewise.
* powerpc: refactor memchr, memrchr, and rawmemchr IFUNC.Wainer dos Santos Moschetta2017-04-116-48/+21
| | | | | | | | | | | | | | | | | | Clean up the IFUNC implementations for powerpc in order to remove unneeded macro definitions. Tested on ppc64le with and without --disable-multi-arch flag. * sysdeps/powerpc/powerpc64/multiarch/memchr-power7.S: Define the implementation-specific function name and remove unneeded macros definition. * sysdeps/powerpc/powerpc64/multiarch/memrchr-power7.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/rawmemchr-power7.S: Likewise. * sysdeps/powerpc/powerpc64/power7/memchr.S: Set a default function name if not defined and pass as parameter to macros accordingly. * sysdeps/powerpc/powerpc64/power7/memrchr.S: Likewise. * sysdeps/powerpc/powerpc64/power7/rawmemchr.S: Likewise.
* powerpc: refactor memset IFUNC.Wainer dos Santos Moschetta2017-04-1110-85/+32
| | | | | | | | | | | | | | | | | | | | | Clean up the IFUNC implementations for powerpc in order to remove unneeded macro definitions. Tested on ppc64le with and without --disable-multi-arch flag. * sysdeps/powerpc/powerpc64/multiarch/memset-power4.S: Define the implementation-specific function name and remove unneeded macros definition. * sysdeps/powerpc/powerpc64/multiarch/memset-power6.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/memset-power7.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/memset-power8.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/memset-ppc64.S: Likewise. * sysdeps/powerpc/powerpc64/memset.S: Set a default function name if not defined and pass as parameter to macros accordingly. * sysdeps/powerpc/powerpc64/power4/memset.S: Likewise. * sysdeps/powerpc/powerpc64/power6/memset.S: Likewise. * sysdeps/powerpc/powerpc64/power7/memset.S: Likewise. * sysdeps/powerpc/powerpc64/power8/memset.S: Likewise.
* powerpc: refactor strcasestr and strstr IFUNC.Wainer dos Santos Moschetta2017-04-114-34/+14
| | | | | | | | | | | | | | | Clean up the IFUNC implementations for powerpc in order to remove unneeded macro definitions. Tested on ppc64le with and without --disable-multi-arch flag. * sysdeps/powerpc/powerpc64/multiarch/strcasestr-power8.S: Define the strcasestr implementation name and remove unneeded macros definition. * sysdeps/powerpc/powerpc64/multiarch/strstr-power7.S: Define strstr implementation name and remove unneeded macros definition. * sysdeps/powerpc/powerpc64/power7/strstr.S: Set a default function name if not defined and pass as parameter to macros accordingly. * sysdeps/powerpc/powerpc64/power8/strcasestr.S: Likewise.
* powerpc: refactor strchr, strchrnul, and strrchr IFUNC.Wainer dos Santos Moschetta2017-04-1111-97/+44
| | | | | | | | | | | | | | | | | | | | | | | Clean up the IFUNC implementations for powerpc in order to remove unneeded macro definitions. Tested on ppc64le with and without --disable-multi-arch flag. * sysdeps/powerpc/powerpc64/multiarch/strchr-power7.S: Define the implementation-specific function name and remove unneeded macros definition. * sysdeps/powerpc/powerpc64/multiarch/strchr-power8.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strchr-ppc64.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strchrnul-power7.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strchrnul-power8.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strrchr-power7.S: Likewise. * sysdeps/powerpc/powerpc64/power7/strchr.S: Set a default function name if not defined and pass as parameter to macros accordingly. * sysdeps/powerpc/powerpc64/power7/strchrnul.S: Likewise. * sysdeps/powerpc/powerpc64/power7/strrchr.S: Likewise. * sysdeps/powerpc/powerpc64/power8/strchr.S: Likewise. * sysdeps/powerpc/powerpc64/strchr.S: Likewise.
* powerpc: refactor strnlen and strlen IFUNC.Wainer dos Santos Moschetta2017-04-118-64/+28
| | | | | | | | | | | | | | | | | | | Clean up the IFUNC implementations for powerpc in order to remove unneeded macro definitions. Tested on ppc64le with and without --disable-multi-arch flag. * sysdeps/powerpc/powerpc64/multiarch/strlen-power7.S: Define the strlen implementation name and remove unneeded macros definition. * sysdeps/powerpc/powerpc64/multiarch/strlen-power8.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strnlen-power7.S: Define the strnlen implementation name and remove unneeded macros definition. * sysdeps/powerpc/powerpc64/power7/strlen.S: Set a default function name if not defined and pass as parameter to macros accordingly. * sysdeps/powerpc/powerpc64/power7/strnlen.S: Likewise. * sysdeps/powerpc/powerpc64/power8/strlen.S: Likewise. * sysdeps/powerpc/powerpc64/strlen.S: Likewise.
* powerpc: refactor strcasecmp, strcmp, and strncmp IFUNC.Wainer dos Santos Moschetta2017-04-1119-171/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up the IFUNC implementations for powerpc in order to remove unneeded macro definitions. Tested on ppc64le with and without --disable-multi-arch flag. * sysdeps/powerpc/powerpc64/multiarch/strcasecmp_l-power7.S: Define the implementation-specific function name and remove unneeded macros definition. * sysdeps/powerpc/powerpc64/multiarch/strcmp-power7.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strcmp-power8.S Likewise. * sysdeps/powerpc/powerpc64/multiarch/strcmp-power9.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strcmp-ppc64.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strncmp-power4.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strncmp-power7.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strncmp-power8.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strncmp-power9.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strncmp-ppc64.S: Likewise. * sysdeps/powerpc/powerpc64/power4/strncmp.S: Set a default function name if not defined and pass as parameter to macros accordingly. * sysdeps/powerpc/powerpc64/power7/strcmp.S: Likewise. * sysdeps/powerpc/powerpc64/power7/strncmp.S: Likewise. * sysdeps/powerpc/powerpc64/power8/strcmp.S: Likewise. * sysdeps/powerpc/powerpc64/power8/strncmp.S: Likewise. * sysdeps/powerpc/powerpc64/power9/strcmp.S: Likewise. * sysdeps/powerpc/powerpc64/power9/strncmp.S: Likewise. * sysdeps/powerpc/powerpc64/strcmp.S: Likewise. * sysdeps/powerpc/powerpc64/strncmp.S: Likewise.
* powerpc: refactor stpcpy, stpncpy, strcpy, and strncpy IFUNC.Wainer dos Santos Moschetta2017-04-119-99/+39
| | | | | | | | | | | | | | | | | | | | Clean up the IFUNC implementations for powerpc in order to remove unneeded macro definitions. Tested on ppc64le with and without --disable-multi-arch flag. * sysdeps/powerpc/powerpc64/multiarch/stpcpy-power8.S: Define the implementation-specific function name and remove unneeded macros definition. * sysdeps/powerpc/powerpc64/multiarch/stpncpy-power7.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/stpncpy-power8.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strcpy-power8.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strncpy-power7.S: Likewise. * sysdeps/powerpc/powerpc64/multiarch/strncpy-power8.S: Likewise. * sysdeps/powerpc/powerpc64/power7/strncpy.S: Set a default function name if not defined. * sysdeps/powerpc/powerpc64/power8/strcpy.S: Likewise. * sysdeps/powerpc/powerpc64/power8/strncpy.S: Likewise.
* Consolidate pthreadtype.h placementConsolidate pthreadtype.h placementAdhemerval Zanella2017-04-104-0/+1
| | | | | | | | | | | | | | | | | | | | | This patch moves all arch specific pthreadtypes.h to a similar path for all architectures (sysdeps/unix/sysv/<arch>/bits). No functional or build change is expected. The idea is mainly to organize the header placement for all architectures. Checked with a build for all major ABI (aarch64-linux-gnu, alpha-linux-gnu, arm-linux-gnueabi, i386-linux-gnu, ia64-linux-gnu, m68k-linux-gnu, microblaze-linux-gnu [1], mips{64}-linux-gnu, nios2-linux-gnu, powerpc{64le}-linux-gnu, s390{x}-linux-gnu, sparc{64}-linux-gnu, tile{pro,gx}-linux-gnu, and x86_64-linux-gnu). * sysdeps/unix/sysv/linux/x86/Implies: New file. * sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h: Move to ... * sysdeps/alpha/nptl/bits/pthreadtypes.h: ... here. * sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h: Move to ... * sysdeps/powerpc/nptl/bits/pthreadtypes.h: ... here. * sysdeps/x86/bits/pthreadtypes.h: Move to ... * sysdeps/x86/nptl/bits/pthreadtypes.h: ... here.
* Add sysdeps/x86/dl-procinfo.cH.J. Lu2017-04-103-28/+54
| | | | | | | | | | Add sysdeps/x86/dl-procinfo.c for x86 version of processor capability information to reduce duplication between i386 and x86_64 dl-procinfo.c. * sysdeps/i386/dl-procinfo.c: Include <sysdeps/x86/dl-procinfo.c>. * sysdeps/x86_64/dl-procinfo.c: Likewise. * sysdeps/x86/dl-procinfo.c: New file.
* Remove unneeded declarations from math_private.hGabriel F. T. Gomes2017-04-103-20/+2
| | | | | | | | | | | | | | | | | The declarations of many functions in math_private.h are not required since __MATHDECL and __MATHDECLX, in math.h, already provide the declarations for these functions. This patch removes the declarations from math_private.h. It also adds the inclusion of math.h to the files which depended on the declaration of functions in math_private.h. Tested for powerpc64le and s390x. * sysdeps/generic/math_private.h: Remove declarations of many functions that are already declared in math.h. * sysdeps/ieee754/ldbl-128/e_logl.c: Include math.h to get the declaration for __frexpl. * sysdeps/ieee754/ldbl-128ibm/e_logl.c: Include math.h to get the declarations for __scalbnl and fabsl.
* Check if SSE is available with HAS_CPU_FEATUREH.J. Lu2017-04-0715-14/+18
| | | | | | | | | | | | | | | | | | | | | | | | Similar to other CPU feature checks, check if SSE is available with HAS_CPU_FEATURE. * sysdeps/i386/fpu/fclrexcpt.c (__feclearexcept): Use HAS_CPU_FEATURE to check for SSE. * sysdeps/i386/fpu/fedisblxcpt.c (fedisableexcept): Likewise. * sysdeps/i386/fpu/feenablxcpt.c (feenableexcept): Likewise. * sysdeps/i386/fpu/fegetenv.c (__fegetenv): Likewise. * sysdeps/i386/fpu/fegetmode.c (fegetmode): Likewise. * sysdeps/i386/fpu/feholdexcpt.c (__feholdexcept): Likewise. * sysdeps/i386/fpu/fesetenv.c (__fesetenv): Likewise. * sysdeps/i386/fpu/fesetmode.c (fesetmode): Likewise. * sysdeps/i386/fpu/fesetround.c (__fesetround): Likewise. * sysdeps/i386/fpu/feupdateenv.c (__feupdateenv): Likewise. * sysdeps/i386/fpu/fgetexcptflg.c (__fegetexceptflag): Likewise. * sysdeps/i386/fpu/fsetexcptflg.c (__fesetexceptflag): Likewise. * sysdeps/i386/fpu/ftestexcept.c (fetestexcept): Likewise. * sysdeps/i386/setfpucw.c (__setfpucw): Likewise. * sysdeps/x86/cpu-features.h (bit_cpu_SSE): New. (index_cpu_SSE): Likewise. (reg_SSE): Likewise.
* getopt: remove USE_NONOPTION_FLAGSZack Weinberg2017-04-071-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | glibc's implementation of getopt includes code to parse an environment variable named _XXX_GNU_nonoption_argv_flags_ (where XXX is the current process's PID in decimal); but all of it has been #ifdefed out since 2001, with no official way to turn it back on. According to commentary in our config.h.in, bash version 2.0 set this environment variable to indicate argv elements that were the result of glob expansion and therefore should not be treated as options, but the feature was "disabled later" because "it caused problems". According to bash's CHANGES file, "later" was release 2.01; it gives no more detail about what the problems were. Version 2.0 of bash was released on the last day of 1996, and version 2.01 in June of 1997. Twenty years later, I think it is safe to assume that this environment variable isn't coming back. * config.h.in (USE_NONOPTION_FLAGS): Remove. * csu/init-first.c: Remove all #ifdef USE_NONOPTION_FLAGS blocks. * sysdeps/mach/hurd/i386/init-first.c: Likewise. * posix/getopt_int.h: Likewise. * posix/getopt.c: Likewise. Also remove SWAP_FLAGS and the __libc_argc and __libc_argv externs, which were only used by #ifdef USE_NONOPTION_FLAGS blocks. * posix/getopt_init.c: Remove file. * posix/Makefile (routines): Remove getopt_init. * include/getopt.h: Don't declare __getopt_initialize_environment. * manual/getopt.texi: Remove mention of USE_NONOPTION_FLAGS in a comment.
* sparc: Fix .udiv plt on libcAdhemerval Zanella2017-04-064-0/+9
| | | | | | | | | | | | | | | | | | | | With the removal of divdi3 object from sparcv9-linux-gnu build, its definition came from libgcc and its functions internall calls .udiv. Since glibc also exports these symbols for compatibility reasons, it will end up creating PLT calls internally in libc.so. To avoid it, this patch uses the linker option --wrap to replace all the internal libc.so .udiv calls to the wrapper __wrap_.udiv. Along with strong alias in the udiv implementations, it makes linker do local calls. Checked on sparcv9-linux-gnu. * sysdeps/sparc/sparc32/Makefile (libc.so-gnulib): New rule. * sysdeps/sparc/sparc32/sparcv8/udiv.S (.udiv): Make a strong_alias to __wrap_.udiv. * sysdeps/sparc/sparc32/sparcv9/udiv.S (.udiv): Likewise. * sysdeps/sparc/sparc32/udiv.S (.udiv): Likewise.
* Build divdi3 only for architecture that required itAdhemerval Zanella2017-04-0610-11/+114
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As noted in [1], divdi3 object is only exported in a handful ABIs (i386, m68k, powerpc32, s390-32, and ia64), however it is built for all current architectures regardless. This patch refact the make rules for this object to so only the aforementioned architectures that actually require it builds it. Also, to avoid internal PLT calls to the exported symbol from the module, glibc uses an internal header (symbol-hacks.h) which is unrequired (and in fact breaks the build for architectures that intend to get symbol definitions from libgcc.a). The patch also changes it to create its own header (divdi3-symbol-hacks.h) and adjust the architectures that require it accordingly. I checked the build/check (with run-built-tests=no) on the following architectures (which I think must cover all supported ABI/builds) using GCC 6.3: aarch64-linux-gnu alpha-linux-gnu arm-linux-gnueabihf hppa-linux-gnu ia64-linux-gnu m68k-linux-gnu microblaze-linux-gnu mips64-n32-linux-gnu mips-linux-gnu mips64-linux-gnu nios2-linux-gnu powerpc-linux-gnu powerpc-linux-gnu-power4 powerpc64-linux-gnu powerpc64le-linux-gnu s390x-linux-gnu s390-linux-gnu sh4-linux-gnu sh4-linux-gnu-soft sparc64-linux-gnu sparcv9-linux-gnu tilegx-linux-gnu tilegx-linux-gnu-32 tilepro-linux-gnu x86_64-linux-gnu x86_64-linux-gnu-x32 i686-linux-gnu I only saw one regression on sparcv9-linux-gnu (extra PLT call to .udiv) which I address in next patch in the set. It also correctly build SH with GCC 7.0.1 (without any regression from c89721e25d). [1] https://sourceware.org/ml/libc-alpha/2017-03/msg00243.html * sysdeps/i386/symbol-hacks.h: New file. * sysdeps/m68k/symbol-hacks.h: New file. * sysdeps/powerpc/powerpc32/symbol-hacks.h: New file. * sysdeps/s390/s390-32/symbol-hacks.h: New file. * sysdeps/unix/sysv/linux/i386/Makefile [$(subdir) = csu] (sysdep_routines): New rule: divdi3 object. [$(subdir) = csu] (sysdep-only-routines): Likewise. [$(subdir) = csu] (CFLAGS-divdi3.c): Likewise. * sysdeps/unix/sysv/linux/m68k/Makefile [$(subdir) = csu] (sysdep_routines): Likewise. [$(subdir) = csu] (sysdep-only-routines): Likewise. [$(subdir) = csu] (CFLAGS-divdi3.c): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/Makefile [$(subdir) = csu] (sysdep_routines): Likewise. [$(subdir) = csu] (sysdep-only-routines): Likewise. [$(subdir) = csu] (CFLAGS-divdi3.c): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/Makefile [$(subdir) = csu] (sysdep_routines): Likewise. [$(subdir) = csu] (sysdep-only-routines): Likewise. [$(subdir) = csu] (CFLAGS-divdi3.c): Likewise. * sysdeps/wordsize-32/Makefile: Remove file. * sysdeps/wordsize-32/symbol-hacks.h: Definitions move to ... * sysdeps/wordsize-32/divdi3-symbol-hacks.h: ... here.
* powerpc64: Add POWER8 strnlenWainer dos Santos Moschetta2017-04-055-5/+473
| | | | | | | | | | | | | | | | | | | | | | | | Added strnlen POWER8 otimized for long strings. It delivers same performance as POWER7 implementation for short strings. This takes advantage of reasonably performing unaligned loads and bit permutes to check the first 1-16 bytes until quadword aligned, then checks in 64 bytes strides until unsafe, then 16 bytes, truncating the count if need be. Likewise, the POWER7 code is recycled for less than 32 bytes strings. Tested on ppc64 and ppc64le. * sysdeps/powerpc/powerpc64/multiarch/Makefile (sysdep_routines): Add strnlen-power8. * sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c (strnlen): Add __strnlen_power8 to list of strnlen functions. * sysdeps/powerpc/powerpc64/multiarch/strnlen-power8.S: New file. * sysdeps/powerpc/powerpc64/multiarch/strnlen.c (__strnlen): Add __strnlen_power8 to ifunc list. * sysdeps/powerpc/powerpc64/power8/strnlen.S: New file.
* Remove CALL_THREAD_FCT macroAdhemerval Zanella2017-04-043-74/+0
| | | | | | | | | | | | | | | | This patch removes CALL_THREAD_FCT macro usage and its defition for x86. For 32 bits it usage is only for force 16 stack alignment, however stack is already explicit aligned in clone syscall. For 64 bits and x32 it just a function call and there is no need to code it with inline assembly. Checked on i686-linux-gnu, x86_64-linux-gnu, and x86_64-linux-gnu-x32. * nptl/pthread_create.c (START_THREAD_DEFN): Remove CALL_THREAD_FCT macro usage. * sysdeps/i386/nptl/tls.h (CALL_THREAD_FCT): Remove definition. * sysdeps/x86_64/nptl/tls.h (CALL_THREAD_FCT): Likewise. * sysdeps/x86_64/32/nptl/tls.h: Remove file.
* Remove __ASSUME_REQUEUE_PIAdhemerval Zanella2017-04-045-9/+0
| | | | | | | | | | | | | | | | | | | | | | The new cond var implementation (ed19993b5b0d) removed all the __ASSUME_{REQUEUE_PI,FUTEX_LOCK_PI} internal usage so there is no need to keep defining it. This patch removes all USE_REQUEUE_PI and __ASSUME_REQUEUE_PI. It is as follow up from BZ#18463. Checked with a build for x86_64-linux-gnu, arm-linux-gnueabhf, m68-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu. * nptl/pthreadP.h (USE_REQUEUE_PI): Remove ununsed macro. * sysdeps/unix/sysv/linux/arm/kernel-features.h (__ASSUME_REQUEUE_PI): Likewise. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_REQUEUE_PI): Likewise. * sysdeps/unix/sysv/linux/m68k/kernel-features.h (__ASSUME_REQUEUE_PI): Likewise. * sysdeps/unix/sysv/linux/mips/kernel-features.h (__ASSUME_REQUEUE_PI): Likewise. * sysdeps/unix/sysv/linux/sparc/kernel-features.h (__ASSUME_REQUEUE_PI): Likewise.
* S390: Clobber also r14 in TLS_LD, TLS_GD macros on 31bit.Stefan Liebler2017-04-041-4/+6
| | | | | | | | | | | | | | | | | | This patch also clobbers r14 in TLS_LD, TLS_GD macros on 31bit. This ensures that r14 isn't used to save and restore r12 while r14 is clobbered by the bas-instruction. As note: r12 can't be added to clobber list as gcc would fail with: error: PIC register clobbered by ‘12’ in ‘asm’ For 64bit this fix was already done in 2004 in the commit b80af23ac6973e69df6cd23d221fa44fffb21e17. ChangeLog: * sysdeps/s390/s390-32/tls-macros.h (TLS_LD, TLS_GD): Clobber also r14.
* posix_spawn: use a larger min stack for -fstack-check [BZ #21253]Mike Frysinger2017-04-031-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | When glibc is built with -fstack-check, trying to use posix_spawn can lead to segfaults due to gcc internally probing stack memory too far. The new spawn API will allocate a minimum of 1 page, but the stack checking logic might probe a couple of pages. When it tries to walk them, everything falls apart. The gcc internal docs [1] state the default interval checking is one page. Which means we need two pages (the current one, and the next probed). No target currently defines it larger. Further, it mentions that the default minimum stack size needed to recover from an overflow is 4/8KiB for sjlj or 8/12KiB for others. But some Linux targets (like mips and ppc) go up to 16KiB (and some non-Linux targets go up to 24KiB). Let's create each child with a minimum of 32KiB slack space to support them all, and give us future breathing room. No test is added as existing ones crash. Even a simple call is enough to trigger the problem: char *argv[] = { "/bin/ls", NULL }; posix_spawn(NULL, "/bin/ls", NULL, NULL, argv, NULL); [1] https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gccint/Stack-Checking.html
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