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2017-04-11powerpc: refactor memset IFUNC.Wainer dos Santos Moschetta
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.
2017-04-11powerpc: refactor strcasestr and strstr IFUNC.Wainer dos Santos Moschetta
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.
2017-04-11powerpc: refactor strchr, strchrnul, and strrchr IFUNC.Wainer dos Santos Moschetta
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.
2017-04-11powerpc: refactor strnlen and strlen IFUNC.Wainer dos Santos Moschetta
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.
2017-04-11powerpc: refactor strcasecmp, strcmp, and strncmp IFUNC.Wainer dos Santos Moschetta
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.
2017-04-11powerpc: refactor stpcpy, stpncpy, strcpy, and strncpy IFUNC.Wainer dos Santos Moschetta
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.
2017-04-11Support auxilliary vector components for cache geometries.Paul Clarke
Add support to getauxval() for new types to get L1, L2, L3 cache sizes, cache line sizes, and cache associativities. The new types for getauxval() were added in the stream for Linux kernel v4.11 in commit 98a5f361b8625c6f4841d6ba013bbf0e80d08147. * elf/elf.h (AT_L1I_CACHESIZE, AT_L1I_CACHEGEOMETRY, AT_L1D_CACHESIZE, AT_L1D_CACHEGEOMETRY, AT_L2_CACHESIZE, AT_L2_CACHEGEOMETRY, AT_L3_CACHESIZE, AT_L3_CACHEGEOMETRY): New. Add auxvec identifiers from kernel arch/powerpc/include/uapi/asm/auxvec.h.
2017-04-11manual: readdir, readdir64 are thread-safeFlorian Weimer
They only modify the state in the dirstream argument, and we generally do not treat this as a reason to mark a function as not thread-safe. For an example, see random_r, which is marked as thread-safe even though the random state is not protected by a lock.
2017-04-10Consolidate pthreadtype.h placementConsolidate pthreadtype.h placementAdhemerval Zanella
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.
2017-04-10Add sysdeps/x86/dl-procinfo.cH.J. Lu
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.
2017-04-10Remove unneeded declarations from math_private.hGabriel F. T. Gomes
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.
2017-04-09Check for __mprotect failure in _dl_map_segments [BZ #20831]Dmitry V. Levin
* elf/dl-map-segments.h (_dl_map_segments): Check for failure of __mprotect to change protection on the excess portion to disallow all access.
2017-04-07Check if SSE is available with HAS_CPU_FEATUREH.J. Lu
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.
2017-04-07getopt: merge from gnulib: use angle-bracket includes consistentlyPaul Eggert
* posix/getopt1.c: Include <config.h>, not "config.h".
2017-04-07getopt: annotate files with relationship to gnulib.Zack Weinberg
As the final act in this patchset, adjust the "This file is part of the GNU C Library" message at the top of each file to indicate which files are synced with gnulib. * posix/bits/getopt_core.h, posix/bits/getopt_ext.h * posix/getopt.c, posix/getopt1.c, posix/getopt_int.h: Mention in top-of-file boilerplate that these files are shared with gnulib. * posix/getopt.h, posix/bits/getopt_posix.h: Mention in top-of-file boilerplate that these files are NOT shared with gnulib, unlike the rest of the getopt implementation.
2017-04-07getopt: eliminate __need_getopt by splitting up getopt.h.Zack Weinberg
__need_getopt is misnamed; what it really means is "we want only the getopt features specified in POSIX, not the GNU extensions". Because this code is shared with gnulib, it winds up being cleanest to split getopt.h into *four* headers. getopt_core.h and getopt_ext.h will be shared with gnulib, getopt_posix.h will be just for glibc, and each project will have its own copy of getopt.h. * posix/bits/getopt_core.h, posix/bits/getopt_ext.h: New files, intended to be shared with gnulib. * posix/bits/getopt_posix.h: New file, not intended to be shared with gnulib. * posix/getopt.h: Now just includes features.h, bits/getopt_core.h, and bits/getopt_ext.h. Will no longer be shared with gnulib. * include/bits/getopt_core.h, include/bits/getopt_ext.h * include/bits/getopt_posix.h: New wrappers. * posix/Makefile: Install new headers. * posix/unistd.h, libio/stdio.h: Include bits/getopt_posix.h instead of getopt.h.
2017-04-07getopt: merge _GL_UNUSED annotations from gnulibZack Weinberg
gnulib now has annotations on at least some functions to cater to compilation with -Wunused-parameter. In order to follow suit cleanly, I've added to libc-symbols.h some of the _GL_* macros that gnulib-common.m4 puts into config.h. (I don't think they belong in sys/cdefs.h, at least not without further thought.) At this point all gnulib-side changes to getopt.c have been merged. * include/libc-symbols.h: For gnulib compatibility, define _GL_UNUSED, _GL_UNUSED_LABEL, _GL_ATTRIBUTE_PURE, and _GL_ATTRIBUTE_CONST. * posix/getopt.c (_getopt_initialize): Mark argc and argv parameters with _GL_UNUSED.
2017-04-07getopt: merge from gnulib: alloca avoidanceZack Weinberg
In one place, glibc's getopt uses alloca to construct a linked list of possibilities for an "ambiguous" long option. In gnulib, malloc should be used instead. Providing for both cases complicates things a fair bit. Instead of merging straight across, therefore, I have chosen to rewrite it using a boolean vector instead of a linked list. There is then only one allocation that might need freeing; in glibc it can honor __libc_use_alloca as usual, and in gnulib we define __libc_use_alloca to always be false, so we don't need ifdefs in the middle of the function. This should also be slightly more efficient in the normal case of long options being fully spelled out -- I think most people aren't even aware they _can_ sometimes abbreviate long options. One interesting consequence is that the list of possibilities is now printed in exactly the order they appear in the list of long options, instead of the first possibility being shuffled to the end. This shouldn't be a big deal but it did break one test that relied on the exact text of this error message. (The reason the previous patch was "in aid of" merging from gnulib is I didn't want to have to make this change in two places.) (The patch looks bigger than it really is because there's a fair bit of reindentation and code rearrangement.) * posix/getopt.c: When used standalone, define __libc_use_alloca as always false and alloca to abort if called. (process_long_option): Rewrite handling of ambiguous long options to use a single boolean vector, not a linked list; use __libc_use_alloca to decide whether to allocate this using alloca. * posix/tst-getopt_long1.c: Adjust text of expected error message.
2017-04-07getopt: refactor long-option handlingZack Weinberg
There were two copies of the bulk of the code to handle long options. Now there is only one. (Yes, this is in aid of merging from gnulib.) The change to bug-getopt4.c clarifies the error messages when the test fails. * posix/getopt.c (process_long_option): New function split out from _getopt_internal_r. (_getopt_internal_r): Replace both copies of the long-option processing code with calls to process_long_option. * posix/bug-getopt4.c (one_test): Print argv[0] in error messages. (do_test): Differentiate argv[0] in the two subtests.
2017-04-07getopt: tidy up _getopt_initialize a bitZack Weinberg
_getopt_data.__posixly_correct is completely redundant to _getopt_data.__ordering, and some work that logically belongs in _getopt_initialize was being done by _getopt_internal_r, making the code harder to understand. As a side effect, getenv will no longer be called if the first character of the options string is '+' or '-', which is probably a Good Thing. (Perhaps we should have a flag character that specifically asks for the permutation behavior?) * posix/getopt_int.h (_getopt_data): Remove __posixly_correct field. * posix/getopt.c (_getopt_internal_r): Move some initialization code... (_getopt_initialize): ...here. Don't set d->__posixly_correct.
2017-04-07getopt: merge from gnulib: function prototype adjustmentsZack Weinberg
For standards compliance, getopt, getopt_long, and getopt_long_only in glibc have to take 'char *const *argv' even though they can mutate the array. gnulib has tried to clean this up as much as possible: all the internal functions use 'char **argv', and when used standalone, so do getopt_long and getopt_long_only. Also brought over are __nonnull annotations, corrections to documentation, and apparently it is no longer necessary to worry about conflicting prototypes for getopt. The macroification of the definitions of getopt and __posix_getopt goes beyond what is currently in gnulib. At this point getopt1.c and getopt_int.h are identical to their gnulib versions. * posix/getopt.h: Add backup definition of __nonnull for consistency with gnulib. Define __getopt_argv_const to const if not already defined. (getopt): Update doc comment from gnulib. Prototype unconditionally. Add __nonnull annotation. (__posix_getopt): Add __nonnull annotation. (getopt_long, getopt_long_only): Use __getopt_argv_const in prototypes for consistency with gnulib. Add __nonnull annotations. * posix/getopt.c (_getopt_initialize, _getopt_internal_r) (getopt_internal): Change 'argv' argument to type 'char **'. Remove now-unnecessary casts. (getopt, __posix_getopt): Eliminate repetition with a macro. Cast 'argv' to 'char **' when calling _getopt_internal. * posix/getopt1.c (getopt_long, getopt_long_only): Use __getopt_argv_const for consistency with gnulib. Cast 'argv' to 'char **' when calling _getopt_internal. (_getopt_long_r, _getopt_long_only_r): Change 'argv' argument to type 'char **'. (main): Constify 'long_options'. * posix/getopt_int.h (getopt_internal, _getopt_internal_r) (_getopt_long_r, _getopt_long_only_r): Change 'argv' argument to type 'char **'.
2017-04-07getopt: clean up error reportingZack Weinberg
getopt can print a whole bunch of error messages, and when used standalone (from gnulib) it uses fprintf to do that. But fprintf is a cancellation point and getopt isn't, and also applying fprintf to a stream in wide-character mode is not allowed. glibc has an internal function called __fxprintf that writes a narrow format string to a stream regardless of mode, but it only handles ASCII format strings, and it's still a cancellation point. getopt's messages are translated, so they might not be ASCII. So getopt has an error message to an asprintf buffer, monkeys with internal flag bits on stderr to disable cancellation, and then calls __fxprintf(stderr, "%s", buffer). There isn't even a helper function, the code is duplicated every time. This patch fixes __fxprintf to handle arbitrary multibyte format strings, and adds a variant __fxprintf_nocancel that does the same thing but also isn't a cancellation point. (It still _works_ by monkeying with internal flag bits on the FILE, but that's not really a layering violation for code in stdio-common.) All of the #ifdef _LIBC blocks can then be reduced to their standalone versions with a little help from some macros at the top of the file. I also wrote a test case to verify that getopt really isn't a cancellation point, and I'm glad I did, because it found two bugs, one of which wasn't even to do with cancellation (see previous patch). * stdio-common/fxprintf.c (__fxprintf_nocancel): New function. (locked_vfxprintf): New helper function. Handle arbitrary multibyte strings, not just ASCII. * include/stdio.h: Declare __fxprintf_nocancel. * posix/getopt.c: When _LIBC is defined, define fprintf to __fxprintf_nocancel, flockfile to _IO_flockfile, and funlockfile to _IO_funlockfile. When neither _LIBC nor _POSIX_THREAD_SAFE_FUNCTIONS is defined, define flockfile and funlockfile as no-ops. (_getopt_internal_r): Remove all internal #ifdef _LIBC blocks; the standalone error-printing code can now be used for libc as well. Add an flockfile/funlockfile pair around one case where the error message is printed in several chunks. Don't use fputc. * posix/tst-getopt-cancel.c: New test. * posix/Makefile: Run it.
2017-04-07getopt: fix fencepost error in ambiguous-W-option handlingZack Weinberg
getopt_long contains an undocumented (AFAICT) feature in which, if you put "W;" in the short-options list, then '-W foo' and '-Wfoo' are treated as equivalent to '--foo'. This is implemented with a partial second copy of the code for handling long options, and that code increments optind one too many times when recovering from an ambiguous abbreviated option, which can cause the main loop to walk past the end of argv and crash. I discovered this while writing a test case that tries to exercise all of getopt's error reporting paths; I wouldn't be surprised to learn that this feature is never used by real applications. * posix/getopt.c (_getopt_internal_r): Don't increment d->optind a second time when reporting ambiguous -W options.
2017-04-07getopt: merge straightforward changes from gnulibZack Weinberg
This covers changes with little or no consequences when the code is used in glibc. * posix/getopt_int.h: Include getopt.h. Use impl-namespace names for all arguments to _getopt_internal and _getopt_internal_r. Declare __ordering enum outside the struct. Harmonize comments with gnulib. * posix/getopt1.c: Simplify #ifdeffage at top of file. Remove ELIDE_CODE logic entirely. Move inclusion of stdlib.h to #ifdef TEST block and make unconditional. Do not define NULL. * posix/getopt.c: Partial merge from gnulib, covering the initial includes and global declarations, commentary, and a couple of semantically-neutral code changes.
2017-04-07getopt: merge from gnulib: don't use `...' quotesZack Weinberg
I'm not sure whether this is official GNU style now, but `...' quotes haven't looked properly balanced in most people's terminal fonts since 2001ish? and gnulib has chosen to switch over to '...' quotes. I'm merging this separately from the other changes in gnulib because it's very mechanical. * posix/getopt.c, posix/getopt.h, posix/getopt1.c, posix/getopt_int.h: Use '...' instead of `...' for quotation marks inside comments and strings.
2017-04-07getopt: remove USE_NONOPTION_FLAGSZack Weinberg
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.
2017-04-07resolv: Remove IQUERY supportFlorian Weimer
2017-04-06sparc: Fix .udiv plt on libcAdhemerval Zanella
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.
2017-04-06Build divdi3 only for architecture that required itAdhemerval Zanella
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.
2017-04-05Define TEST_FUNCTION_ARGV in elf/tst-dlopen-aout.cH.J. Lu
* elf/tst-dlopen-aout.c (TEST_FUNCTION): Removed. (TEST_FUNCTION_ARGV): New.
2017-04-05Update elf tests to use the support test driver.Wainer dos Santos Moschetta
Replaced test-skeleton.c with support/test-driver.c and adjusted the tests accordinly. Checked on x86_64. * elf/next.c: Import support/test-driver.c instead of test-skeleton.c and delete TEST_FUNCTION macro definition. * elf/nodelete.c: Likewise. * elf/order2.c: Likewise. * elf/tst-_dl_addr_inside_object.c: Likewise. * elf/tst-addr1.c: Likewise. * elf/tst-align.c: Likewise. * elf/tst-align2.c: Likewise. * elf/tst-audit11.c: Likewise. * elf/tst-audit12.c: Likewise. * elf/tst-audit2.c: Likewise. * elf/tst-audit9.c: Likewise. * elf/tst-auxv.c: Likewise and define TEST_FUNCTION_ARGV macro. * elf/tst-deep1.c: Likewise. * elf/tst-dl-iter-static.c: Likewise. * elf/tst-dlmodcount.c: Likewise. * elf/tst-dlmopen1.c: Likewise. * elf/tst-dlmopen2.c: Likewise. * elf/tst-dlmopen3.c: Likewise. * elf/tst-dlopen-aout.c: Likewise. * elf/tst-dlopenrpath.c: Likewise. * elf/tst-dlsym-error.c: Likewise. * elf/tst-execstack-needed.c: Likewise. * elf/tst-execstack-prog.c: Likewise. * elf/tst-execstack.c: Likewise. * elf/tst-global1.c: Likewise. * elf/tst-gnu2-tls1.c: Likewise. * elf/tst-latepthread.c: Likewise. * elf/tst-leaks1.c: Likewise. * elf/tst-linkall-static.c: Likewise. (do_test): New function. * elf/tst-nodelete-opened.c: Likewise. * elf/tst-nodelete.cc: Likewise. * elf/tst-nodelete2.c: Likewise. * elf/tst-noload.c: Likewise. * elf/tst-null-argv.c: Likewise and define TEST_FUNCTION_ARGV marcro. * elf/tst-order-main.c: Likewise. * elf/tst-pathopt.c: Likewise. * elf/tst-pie2.c: Likewise. * elf/tst-piemod1.c: Likewise. * elf/tst-prelink.c: Likewise. * elf/tst-protected1a.c: Likewise. * elf/tst-protected1b.c: Likewise. * elf/tst-ptrguard1.c: Likewise, import getopt.h, and define _GNU_SOURCE macro. (cmdline_process_function): New function. * elf/tst-relsort1.c: Likewise. * elf/tst-stackguard1.c: Likewise, import getopt.h, and define _GNU_SOURCE macro. (cmdline_process_function): New function. * elf/tst-thrlock.c: Likewise. * elf/tst-tls-dlinfo.c: Likewise. * elf/tst-tls-manydynamic.c: Likewise and import support/xthread.h. * elf/tst-tls1.c: Likewise. * elf/tst-tls10.c: Likewise. * elf/tst-tls11.c: Likewise. * elf/tst-tls12.c: Likewise. * elf/tst-tls13.c: Likewise. * elf/tst-tls14.c: Likewise. * elf/tst-tls15.c: Likewise. * elf/tst-tls16.c: Likewise. * elf/tst-tls17.c: Likewise. * elf/tst-tls18.c: Likewise. * elf/tst-tls19.c: Likewise. * elf/tst-tls2.c: Likewise. * elf/tst-tls3.c: Likewise. * elf/tst-tls4.c: Likewise. * elf/tst-tls5.c: Likewise. * elf/tst-tls6.c: Likewise. * elf/tst-tls7.c: Likewise. * elf/tst-tls8.c: Likewise. * elf/tst-tls9.c: Likewise. * elf/tst-tlsalign-extern.c: Likewise. * elf/tst-tlsalign.c: Likewise. * elf/tst-unique1.c: Likewise. * elf/tst-unique2.c: Likewise. * elf/vismain.c: Likewise.
2017-04-05Add page tests to string/test-strnlen.Wainer dos Santos Moschetta
May be tricky for otimized implementations to handle strings around page boundary once, for instance, it is performed unaligned loads or when maxlen is used as a hint for vectorized loops. The test cases should unveil regression bugs on these cases. To some extend do_random_tests in string/test-strnlen tests strings placed at page end but it does not cover all cases. So this change adds tests which consists of placing strings of varying sizes ending at the page boundary. It also combines with different values of maxlen. Tested on ppc64le and x86_64. * string/test-strnlen.c (do_page_tests): New function to check length of strings ending at the page boundary. (test_main): Added call to the do_page_tests function.
2017-04-05powerpc64: Add POWER8 strnlenWainer dos Santos Moschetta
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.
2017-04-04Update wcsmbs tests to use the support test driverWainer dos Santos Moschetta
Replaced test-skeleton.c with support/test-driver.c and adjusted the tests accordinly. Checked on x86_64-linux-gnu. * wcsmbs/tst-btowc.c: Import support/test-driver.c and remove the TEST_FUNCTION macro definition. * wcsmbs/tst-mbrtowc2.c: Likewise. * wcsmbs/tst-mbsrtowcs.c: Likewise. * wcsmbs/tst-wchar-h.c: Likewise. * wcsmbs/tst-wcpncpy.c: Likewise. * wcsmbs/tst-wcrtomb.c: Likewise. * wcsmbs/tst-wcsnlen.c: Likewise. * wcsmbs/tst-wcstof.c: Likewise.
2017-04-04Remove CALL_THREAD_FCT macroAdhemerval Zanella
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.
2017-04-04Remove __ASSUME_REQUEUE_PIAdhemerval Zanella
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.
2017-04-04resolv: Add tst-resolv-canonnameFlorian Weimer
2017-04-04nss_dns: Replace local declarations with declarations from a header fileFlorian Weimer
2017-04-04nss_dns: Remove superfluous dn_expand call from network handlingFlorian Weimer
2017-04-04resolv: Add test coverage for ns_name_unpack, ns_name_ntopFlorian Weimer
2017-04-04S390: Clobber also r14 in TLS_LD, TLS_GD macros on 31bit.Stefan Liebler
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.
2017-04-03ChangeLog: fix BZ style to be consistent and match majority of existing codeMike Frysinger
2017-04-03posix_spawn: use a larger min stack for -fstack-check [BZ #21253]Mike Frysinger
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
2017-04-01Call the right helper function when setting mallopt M_ARENA_MAX (BZ #21338)Wladimir J. van der Laan
Fixes a typo introduced in commit be7991c0705e35b4d70a419d117addcd6c627319. This caused mallopt(M_ARENA_MAX) as well as the environment variable MALLOC_ARENA_MAX to not work as intended because it set the wrong internal parameter. [BZ #21338] * malloc/malloc.c: Call do_set_arena_max for M_ARENA_MAX instead of incorrect do_set_arena_test
2017-03-31Fix condition for inclusion of math-finite.h for long doubleGabriel F. T. Gomes
The condition for declaration of long double functions in math-finite.h was #ifdef __MATH_DECLARE_LDOUBLE before the macroization of this file. After the macroization, it was incorreclty changed to #if __MATH_DECLARE_LDOUBLE, which broke the build for arm. * math/math.h: Fix check for __MATH_DECLARE_LDOUBLE. * math/bits/math-finite.h: Likewise.
2017-03-31fts: Fix symbol redirect for fts_set [BZ #21289]Slava Barinov
In a 32-bit environment with _FILE_OFFSET_BITS=64, the __REDIRECT macro combined with __THROW generates an invalid C++ declaration.
2017-03-30Fix more test-errno issuesAdhemerval Zanella
This patch fixes some test-errno-linux unexpected returns for the tested syscalls on some older kernels (I saw it on a Linux 3.8 on armv7l). Basically: - inotify_add_watch: Linux v3.8 (676a0675c) removed the test to check at least one valid bit in flags (to return EINVAL). It was later added back in v3.9 (04df32fa1). - quotactl: returns ENOSYS for kernels not configured with CONFIG_QUOTA. Checked on x86_64-linux-gnu and armv7l-linux-gnueabihf. * sysdeps/unix/sysv/linux/test-errno-linux.c (do_test): Handle non expected inotify_add_watch and quotactl return.
2017-03-30Change return type in the declaration of __ieee754_rem_pio2lGabriel F. T. Gomes
The implementation of __ieee754_rem_pio2l in ldbl-128, ldbl-128ibm, and ldbl-96 return the type int32_t, whereas math_private.h declares it as returning int. This patch changes the declaration to match the declaration in thoses directories, as well as it changes the stub implementation in math/e_rem_pio2l.c, similarly. * math/e_rem_pio2l.c (__ieee754_rem_pio2l): Change return type to int32_t. * sysdeps/generic/math_private.h: Declare __ieee754_rem_pio2l as returning int32_t.
2017-03-30Macroize inclusion of math-finite.hGabriel F. T. Gomes
This patch macroizes the declarations in math/bits/math-finite.h similarly to what math/bits/mathcalls.h does. For each floating-point type, the file is included once in math/math.h. This will reduce the amount of repetitive boilerplate required when adding float128 versions of these declarations. Tested for powerpc64le and s390x. * math/math.h: Include bits/math-finite.h once per floating-point type. * math/bits/math-finite.h: Macroize all declarations by floating-point type.
2017-03-29Fix i686 memchr overflow calculation (BZ#21182)Adhemerval Zanella
This patch fixes the regression added by 23d2770 for final address overflow calculation. The subtraction of the considered size (16) at line 120 is at wrong place, for sizes less than 16 subsequent overflow check will not take in consideration an invalid size (since the subtraction will be negative). Also, the lea instruction also does not raise the carry flag (CF) that is used in subsequent jbe to check for overflow. The fix is to follow x86_64 logic from 3daef2c where the overflow is first check and a sub instruction is issued. In case of resulting negative size, CF will be set by the sub instruction and a NULL result will be returned. The patch also add similar tests reported in bug report. Checked on i686-linux-gnu and x86_64-linux-gnu. * string/test-memchr.c (do_test): Add BZ#21182 checks for address near end of a page. * sysdeps/i386/i686/multiarch/memchr-sse2.S (__memchr): Fix overflow calculation.
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