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2015-09-03Don't install bits/libc-lock.h or bits/stdio-lock.h.Joseph Myers
The bits/libc-lock.h and bits/stdio-lock.h headers are installed, but not used by any other installed header. Accordingly, this patch stops these headers from being installed. A followup is intended to move these headers out of the bits/ namespace. Tested for x86_64 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * Makefile (headers): Remove bits/libc-lock.h. * libio/Makefile (headers): Remove bits/stdio-lock.h.
2015-09-03Don't include <bits/stdio-lock.h> from installed <libio.h>.Joseph Myers
Every so often someone gets confused by the fact that the installed <bits/stdio-lock.h> header includes the non-installed <lowlevellock.h> header. This inclusion is not in fact a bug, because <bits/stdio-lock.h> only gets included by any header that users should include directly if _IO_MTSAFE_IO is defined, and that's an internal define used when building libio, not a feature test macro it's valid for users to define. However, on general principles it's best to have as little as possible in the installed headers that is inapplicable for valid uses of the installed glibc. This patch moves the include of <bits/stdio-lock.h> to the internal header include/libio.h, so that even if someone defines _IO_MTSAFE_IO it won't get included. This is intended as preparation for stopping <bits/stdio-lock.h> and <bits/libc-lock.h> from being installed at all (after this patch they aren't used in any installed header; formally of course they don't need to be installed even before this patch, but stopping them being installed before removing the #include would just exacerbate the confusion described above), and then moving those out of the bits/ namespace in accordance with the principle that that namespace is only for installed headers. The tests scanf15.c and scanf17.c avoid the internal headers; after this patch that means they need to undefine _IO_MTSAFE_IO as well as _LIBC so as to get a working _IO_lock_t definition for libio.h. This brings them closer to using the headers as an installed program would, which clearly accords with the intent of those tests. Tested for x86_64 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * libio/libio.h [_IO_MTSAFE_IO]: Remove include of <bits/stdio-lock.h> and commented-out include of <comthread.h>. * include/libio.h [!_ISOMAC && _IO_MTSAFE_IO]: Include <bits/stdio-lock.h>. * stdio-common/scanf15.c (_IO_MTSAFE_IO): Undefine. * stdio-common/scanf17.c (_IO_MTSAFE_IO): Likewise.
2015-09-01Fix BZ #18757.Paul Pluzhnikov
2015-09-01Filter out NULL entries.Paul Pluzhnikov
2015-09-01Add netinet/in.h values from Linux 4.2.Joseph Myers
This patch adds new constants from Linux 4.2 to netinet/in.h: IPPROTO_MPLS and IP_BIND_ADDRESS_NO_PORT (both in include/uapi/linux/in.h in Linux; one directly in netinet/in.h, one in bits/in.h in glibc). Tested for x86_64 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * inet/netinet/in.h (IPPROTO_MPLS): New enum value and macro. * sysdeps/unix/sysv/linux/bits/in.h (IP_BIND_ADDRESS_NO_PORT): New macro.
2015-09-01Add more TCP_* values to netinet/tcp.h.Joseph Myers
This patch adds move TCP_* values to sysdeps/gnu/netinet/tcp.h to bring it up to date with Linux 4.2. TCP_SAVE_SYN and TCP_SAVED_SYN are new in 4.2, TCP_NOTSENT_LOWAT and TCP_CC_INFO are older (Szabolcs previously noted in <https://sourceware.org/ml/libc-alpha/2015-06/msg00938.html> that this header was out of date in glibc). Tested for x86_64 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * sysdeps/gnu/netinet/tcp.h (TCP_NOTSENT_LOWAT): New macro. (TCP_CC_INFO): Likewise. (TCP_SAVE_SYN): Likewise. (TCP_SAVED_SYN): Likewise.
2015-08-31Fix non-v9 32-bit sparc build.Brett Neumeier
[BZ #18870] * sysdeps/sparc/sparc32/sem_open.c: Add missing #include
2015-08-31Fix broken overflow check in posix_fallocate [BZ 18873]Paul Eggert
* sysdeps/posix/posix_fallocate.c (posix_fallocate): * sysdeps/posix/posix_fallocate64.c (__posix_fallocate64_l64): Fix parenthesization typo.
2015-08-29NEWS: add #18887Mike Frysinger
2015-08-29getmntent: fix memory corruption w/blank lines [BZ #18887]Mike Frysinger
The fix for BZ #17273 introduced a single byte of memory corruption when the line is entirely blank. It would walk back past the start of the buffer if the heap happened to be 0x20 or 0x09 and then write a NUL byte. buffer = '\n'; end_ptr = buffer; while (end_ptr[-1] == ' ' || end_ptr[-1] == '\t') end_ptr--; *end_ptr = '\0'; Fix that and rework the tests. Adding the testcase for BZ #17273 to the existing \040 parser does not really make sense as it's unrelated, and leads to confusing behavior: it implicitly relies on the new entry being longer than the previous entry (since it just rewinds the FILE*). Split it out into its own dedicated testcase instead.
2015-08-29de.po: fix SIGALRM typo [BZ #4404]Mike Frysinger
2015-08-28time/tst-strptime2.c: test full input range +/- 0-9999James Perkins
strptime's %z specifier parses a string consisting of a sign ('+' or '-'), two hours digits, and optionally two minutes digits, into a tm.tm_gmtoff field containing the signed number of seconds the time zone is offset from UTC time. The time/tst-strptime2.c program passes a short list of strings through strptime, validating that either the gmtoff value returned matches an expected value, or that strptime returns an expected NULL for invalid strings (for example, when the minutes portion of the string is outside of the range 00 to 59, or the sign is missing before the hours digits). In review of strptime fixes, Carlos O'Donell expressed a wish that the test function iterate through the entire range of all possible numeric strings (-9999 to +9999) which could be passed to strptime %z, and validate the correct response. Specifically, the test will look for a NULL response from strptime when: * sign ('+' or '-') is not present before the first digit (invalid format). * A sign and no digits are found (invalid format). * A sign and one digit are found (invalid format). * A sign and three digits are found (invalid format). * A sign and four digits (-9999 to +9999) are found but the last two digits (minutes) are in the range 60 to 99. The test will look for a success response from strptime with tm.tm_gmtoff matching the calculated tm_gmtoff value when: * A sign and four digits are found (-9999 to +9999), and the last two digits (minutes) are in the range 00 to 59. * A sign and two digit strings are found (-99 to +99). The test's iteration over the possible digit values results in 22223 test strings prepared, tested, and passed by strptime. The test supports a --verbose command line option which will show the test results of every test input, and a final summary of all tests. Here is some sample output: PASS: input "1113472456 1030", expected: invalid, return value NULL PASS: input "1113472456 +", expected: invalid, return value NULL PASS: input "1113472456 -", expected: invalid, return value NULL PASS: input "1113472456 +0", expected: invalid, return value NULL PASS: input "1113472456 -0", expected: invalid, return value NULL PASS: input "1113472456 +1", expected: invalid, return value NULL ... PASS: input "1113472456 +9", expected: invalid, return value NULL PASS: input "1113472456 -9", expected: invalid, return value NULL PASS: input "1113472456 +00", expected: valid, tm.tm_gmtoff 0 PASS: input "1113472456 -00", expected: valid, tm.tm_gmtoff 0 PASS: input "1113472456 +01", expected: valid, tm.tm_gmtoff 3600 PASS: input "1113472456 -01", expected: valid, tm.tm_gmtoff -3600 PASS: input "1113472456 +02", expected: valid, tm.tm_gmtoff 7200 ... PASS: input "1113472456 +99", expected: valid, tm.tm_gmtoff 356400 PASS: input "1113472456 -99", expected: valid, tm.tm_gmtoff -356400 PASS: input "1113472456 +000", expected: invalid, return value NULL PASS: input "1113472456 -000", expected: invalid, return value NULL PASS: input "1113472456 +001", expected: invalid, return value NULL ... PASS: input "1113472456 +999", expected: invalid, return value NULL PASS: input "1113472456 -999", expected: invalid, return value NULL PASS: input "1113472456 +0000", expected: valid, tm.tm_gmtoff 0 PASS: input "1113472456 -0000", expected: valid, tm.tm_gmtoff 0 PASS: input "1113472456 +0001", expected: valid, tm.tm_gmtoff 60 PASS: input "1113472456 -0001", expected: valid, tm.tm_gmtoff -60 ... PASS: input "1113472456 +0059", expected: valid, tm.tm_gmtoff 3540 PASS: input "1113472456 -0059", expected: valid, tm.tm_gmtoff -3540 PASS: input "1113472456 +0060", expected: invalid, return value NULL PASS: input "1113472456 -0060", expected: invalid, return value NULL ... PASS: input "1113472456 +0099", expected: invalid, return value NULL PASS: input "1113472456 -0099", expected: invalid, return value NULL PASS: input "1113472456 +0100", expected: valid, tm.tm_gmtoff 3600 PASS: input "1113472456 -0100", expected: valid, tm.tm_gmtoff -3600 PASS: input "1113472456 +0101", expected: valid, tm.tm_gmtoff 3660 ... PASS: input "1113472456 +9999", expected: invalid, return value NULL PASS: input "1113472456 -9999", expected: invalid, return value NULL PASS: 22223 input strings: 0 fail, 22223 pass Any failing test will result in printing the failed line to stdout, and will trigger the printing of the summary line at the of all tests. For example: FAIL: input "1113472456 1030", expected: invalid, return value NULL, got: valid, tm.tm_gmtoff 37800 FAIL: 22223 input strings: 1 fail, 22222 pass
2015-08-28strptime %z: fix rounding, extend range to +/-9959 [BZ #16141]James Perkins
Topic: strptime supports a %z input field descriptor, which parses a time zone offset from UTC time into the broken-out time field tm_gmtoff. Problems: 1) In the current implementation, the minutes portion calculation is correct only for minutes evenly divisible by 3. This is because the minutes value is converted to decimal time, but inadequate precision leads to rounding which calculates results that are too low for some values. For example, due to rounding, a +1159 offset string results in an incorrect tm_gmtoff of 43128 (== 11 * 3600 + 58.8 * 60) seconds, instead of 43140 (== 11 * 3600 + 59 * 60) seconds. In contrast, a +1157 offset (minutes divisible by 3) does not cause the bug, and results in a correct tm_gmtoff of 43020. 2) strptime's %z specifier will not parse time offsets less than -1200 or greater than +1200, or if only hour digits are present, less than -12 or greater than +12. It will return NULL for offsets outside that range. These limits do not meet historical and modern use cases: * Present day exceeds the +1200 limit: - Pacific/Auckland (New Zealand) summer time is +1300. - Pacific/Kiritimati (Christmas Island) is +1400. - Pacific/Apia (Samoa) summer time is +1400. * Historical offsets exceeded +1500/-1500. * POSIX supports -2459 to +2559. * Offsets up to +/-9959 may occasionally be useful. * Paul Eggert's notes provide additional detail: - https://sourceware.org/ml/libc-alpha/2014-12/msg00068.html - https://sourceware.org/ml/libc-alpha/2014-12/msg00072.html 3) tst-strptime2, part of the 'make check' test suite, does not test for the above problems. Corrective actions: 1) In time/strptime_l.c, calculate the offset from the hour and minute portions directly, without the rounding errors introduced by decimal time. 2) Remove the +/-1200 range limit, permitting strptime to parse offsets from -9959 through +9959. 3) Add zone offset values to time/tst-strptime2.c. * Test minutes evenly divisible by three (+1157) and not evenly divisible by three (+1158 and +1159). * Test offsets near the old and new range limits (-1201, -1330, -2459, -2500, -99, -9959, +1201, +1330, +1400, +1401, +2559, +2600, +99, and +9959) The revised strptime passes all old and new tst-strptime2 tests.
2015-08-28Mention 15786 in NEWSH.J. Lu
commit f3dcae82d54e5097e18e1d6ef4ff55c2ea4e621e Author: H.J. Lu <hjl.tools@gmail.com> Date: Tue Aug 25 04:33:54 2015 -0700 Save and restore vector registers in x86-64 ld.so also fixed https://sourceware.org/bugzilla/show_bug.cgi?id=15786
2015-08-28Fix wordsize-32 mmap offset for negative value (BZ#18877)Adhemerval Zanella
This patch fixes the default wordsize-32 mmap implementation offset calculation for negative values. Current code uses signed shift operation to calculate the multiple size to use with syscall and it is implementation defined. Change it to use a division base on mmap page size (default being as before, 4096). Tested on armv7hf. [BZ #18877] * posix/Makefile (tests): Add tst-mmap-offset. * posix/tst-mmap.c: New file. * sysdeps/unix/sysv/linux/generic/wordsize-32/mmap.c (__mmap): Fix offset calculation for negative values.
2015-08-27Note bug 14941 as having been fixed in 2.18.Joseph Myers
2015-08-27Detect and select i586/i686 implementation at run-timefedora/masterH.J. Lu
We detect i586 and i686 features at run-time by checking CX8 and CMOV CPUID features bits. We can use these information to select the best implementation in ix86 multiarch. HAS_I586/HAS_I686 is true if i586/i686 instructions are available on the processor. Due to the reordering and the other nifty extensions in i686, it is not really good to use heavily i586 optimized code on an i686. It's better to use i486 code if it isn't an i586. USE_I586/USE_I686 is true if i586/i686 implementation should be used for the processor. USE_I586 is true only if i686 instructions aren't available. If i686 instructions are available, we always choose i686 or i486 implementation, in that order, and we never choose i586 implementation for i686-class processors. * sysdeps/i386/init-arch.h: New file. * sysdeps/i386/i586/init-arch.h: Likewise. * sysdeps/i386/i686/init-arch.h: Likewise. * sysdeps/x86/cpu-features.c (init_cpu_features): Set bit_I586 bit if CX8 is available. Set bit_I686 bit if CMOV is available. * sysdeps/x86/cpu-features.h (bit_I586): New. (bit_I686): Likewise. (bit_CX8): Likewise. (bit_CMOV): Likewise. (index_CX8): Likewise. (index_CMOV): Likewise. (index_I586): Likewise. (index_I686): Likewise. (reg_CX8): Likewise. (reg_CMOV): Likewise. (HAS_I586): Defined as HAS_ARCH_FEATURE (I586) if i586 isn't available at compile-time. (HAS_I686): Defined as HAS_ARCH_FEATURE (I686) if i686 isn't available at compile-time. * sysdeps/x86/init-arch.h (USE_I586): New macro. (USE_I686): Likewise.
2015-08-27Add i386 memset and memcpy assembly functionsH.J. Lu
Add i386 memset and memcpy assembly functions with REP MOVSB/STOSB instructions. * sysdeps/i386/bcopy.S: New file. * sysdeps/i386/bzero.S: Likewise. * sysdeps/i386/memcpy.S: Likewise. * sysdeps/i386/memmove.S: Likewise. * sysdeps/i386/mempcpy.S: Likewise. * sysdeps/i386/memset.S: Likewise. * sysdeps/i386/bzero.c: Removed. * sysdeps/i386/memset.c: Likewise. * sysdeps/i386/i586/memcpy_chk.S: Likewise. * sysdeps/i386/i586/mempcpy_chk.S: Likewise. * sysdeps/i386/i586/memset_chk.S: Likewise. * sysdeps/i386/i686/memcpy_chk.S: Moved to ... * sysdeps/i386/memcpy_chk.S: Here. * sysdeps/i386/i686/memmove_chk.S: Moved to ... * sysdeps/i386/memmove_chk.S: Here. * sysdeps/i386/i686/mempcpy_chk.S: Moved to ... * sysdeps/i386/mempcpy_chk.S: Likewise. * sysdeps/i386/i686/memset_chk.S: Moved to ... * sysdeps/i386/memset_chk.S: Likewise.
2015-08-27 Fix undefined warning messages in GCC 6.Steve Ellcey
GCC 6 puts out warnings in a different location then GCC 5. Move the DIAG macros so that the warnings are supressed for both compilers. ChangeLog: * soft-fp/fmasf4.c: Add include of sys/cdefs.h. Move DIAG_PUSH_NEEDS_COMMENT, DIAG_IGNORE_NEEDS_COMMENT to front of file, move DIAG_POP_NEEDS_COMMENT to end of file. * soft-fp/fmadf4.c: Ditto. * soft-fp/fmatf4.c: Ditto.
2015-08-27Remove i486 subdirectoryH.J. Lu
Since glibc doesn't support i386 any more, we can remove i486 subdirectory. * sysdeps/i386/i586/Implies: Removed. * sysdeps/i386/i686/Implies: Likewise.
2015-08-27Move i486/strlen.S to strlen.SH.J. Lu
Since glibc doesn't support i386 any more, we can move i486/strlen.S to strlen.S. * sysdeps/i386/i486/strlen.S: Moved to ... * sysdeps/i386/strlen.S: Here.
2015-08-27Move i486/strcat.S to strcat.SH.J. Lu
Since glibc doesn't support i386 any more, we can move i486/strcat.S to strcat.S. * sysdeps/i386/i486/strcat.S: Moved to ... * sysdeps/i386/strcat.S: Here. * sysdeps/i386/i686/multiarch/strcat.S: Updated.
2015-08-27Move i486/pthread_spin_trylock.S to pthread_spin_trylock.SH.J. Lu
Since glibc doesn't support i386 any more, we can move i486/pthread_spin_trylock.S to pthread_spin_trylock.S * sysdeps/i386/i486/pthread_spin_trylock.S: Moved to ... * sysdeps/i386/pthread_spin_trylock.S: Here. * sysdeps/i386/i586/pthread_spin_trylock.S: Removed. * sysdeps/i386/i686/pthread_spin_trylock.S: Updated.
2015-08-27Move i486/string-inlines.c to string-inlines.cH.J. Lu
Since glibc doesn't support i386 any more, we can move i486/string-inlines.c to string-inlines.c. * sysdeps/i386/i486/string-inlines.c: Moved to ... * sysdeps/i386/string-inlines.c: Here.
2015-08-27Move i486/htonl.S to htonl.SH.J. Lu
Since glibc doesn't support i386 any more, we can move i486/htonl.S to htonl.S. * sysdeps/i386/i486/htonl.S: Moved ... * sysdeps/i386/htonl.S: here.
2015-08-27Move i486/bits/atomic.h to bits/atomic.hH.J. Lu
Since glibc doesn't support i386 any more, we can move i486/bits/atomic.h to bits/atomic.h. * sysdeps/i386/i486/bits/atomic.h: Moved to ... * sysdeps/i386/bits/atomic.h: Here.
2015-08-27Remove sysdeps/i386/i486/VersionsH.J. Lu
sysdeps/i386/i486/Versions isn't needed since it duplicates contents in sysdeps/i386/Versions. * sysdeps/i386/i486/Versions: Removed.
2015-08-27Mention mkdtemp as another secure alternative to mktempGleb Fotengauer-Malinovskiy
[BZ #2898] * misc/mktemp.c: Add mkdtemp to the link_warning message. Based on patch by Aurelien Jarno.
2015-08-26Disable uninitialized warning with GCC 4.8Stan Shebs
As with other spots in the code, GCC 4.8 unnecessarily complains about an uninitialized variable in tanl calcs, so this patch disables. With it, the library and sees the usual set of test passes. * sysdeps/ieee754/ldbl-96/k_tanl.c: Include <libc-internal.h>. (__kernel_tanl): Ignore uninitialized warnings around use of SIGN.
2015-08-26Meaningless ChangeLog cleanup to trigger buildbot.Roland McGrath
2015-08-26powerpc: Sync hwcap.h with kernelCarlos Eduardo Seo
Linux commit b4b56f9ecab40f3b4ef53e130c9f6663be491894 introduced a new HWCAP2 bit to indicate that the kernel now aborts a memory transaction when a syscall is made. This patch adds that bit to sysdeps/powerpc/bits/hwcap.h. 2015-08-26 Carlos Eduardo Seo <cseo@linux.vnet.ibm.com> * sysdeps/powerpc/bits/hwcap.h: Add PPC_FEATURE2_HTM_NOSC. * sysdeps/powerpc/dl-procinfo.c: (_dl_powerpc_cap_flags): Added descriptor for this hwcap feature so it shows when LD_SHOW_AUXV=1.
2015-08-26powerpc: Revert to default atomic ops in elision codePaul E. Murphy
Power ISA 2.07B section B.5.5 relaxed the barrier requirement around a TLE enabled lock. It is now identical to a traditional lock. 2015-08-26 Paul E. Murphy <murphyp@linux.vnet.ibm.com> * sysdeps/unix/sysv/linux/powerpc/elision-lock.c (__arch_compare_and_exchange_val_32_acq): Remove and use common definition. ISA 2.07B no longer requires full sync.
2015-08-26mips: siginfo.h: add SIGSYS details [BZ #18863]Mike Frysinger
Linux 3.13 added SIGSYS details to siginfo_t; update glibc's copy to keep in sync with it.
2015-08-26Replace BZERO_P/PIC with USE_AS_BZERO/SHAREDH.J. Lu
Replace BZERO_P with USE_AS_BZERO in i586/i686 memset.S to support i386 multi-arch memset. Also we should check SHARED not PIC for libc.so since libc.a may be compiled with PIC. * sysdeps/i386/i586/bzero.S (USE_AS_BZERO): New. * sysdeps/i386/i686/bzero.S (USE_AS_BZERO): Likewise. * sysdeps/i386/i586/memset.S (BZERO_P): Removed. Check USE_AS_BZERO/SHARED instead of BZERO_P/PIC. (__memset_zero_constant_len_parameter): New. * sysdeps/i386/i686/memset.S (BZERO_P): Removed. Check USE_AS_BZERO/SHARED instead of BZERO_P/PIC. (__memset_zero_constant_len_parameter): Don't define if __memset_chk or USE_AS_BZERO are defined.
2015-08-26Replace MEMPCPY_P/PIC with USE_AS_MEMPCPY/SHAREDH.J. Lu
Replace MEMPCPY_P with USE_AS_MEMPCPY in i586 memcpy.S to support i386 multi-arch memcpy. Also we should check SHARED not PIC for libc.so since libc.a may be compiled with PIC. * sysdeps/i386/i586/memcpy.S (MEMPCPY_P): Removed. Check USE_AS_MEMPCPY/SHARED instead of MEMPCPY_P/PIC. * sysdeps/i386/i586/mempcpy.S (USE_AS_MEMPCPY): New.
2015-08-26Don't disable SSE in x86-64 ld.soH.J. Lu
Since x86-64 ld.so preserves vector registers now, we can use SSE in x86-64 ld.so. We should run tst-ld-sse-use.sh only on i386. * sysdeps/x86/Makefile [$(subdir) == elf] (CFLAGS-.os, tests-special, $(objpfx)tst-ld-sse-use.out): Moved to ... * sysdeps/i386/Makefile [$(subdir) == elf] (CFLAGS-.os, tests-special, $(objpfx)tst-ld-sse-use.out): Here. Update comments. * sysdeps/x86_64/Makefile [$(subdir) == elf] (CFLAGS-.os): Add -mno-mmx for $(all-rtld-routines). * sysdeps/x86/tst-ld-sse-use.sh: Moved to ... * sysdeps/i386/tst-ld-sse-use.sh: Here. Replace x86-64 with i386.
2015-08-26Adjust _Unwind_Word in unwind.h to version in libgcc.Stefan Liebler
Building glibc on s390-32 with gcc option -mzarch produces the error due to sysdeps/s390/jmpbuf-unwind.h:37:10: (void *) (_Unwind_GetCFA (_context): cast to pointer from integer of different size [-Werror=int-to-pointer-cast] Building on s390-32 in esa-mode or s390-64 is fine. _Unwind_GetCFA returns an _Unwind_Word which is an unsigned with a size of 4 bytes on s390-32 (esa-mode) and 8 bytes on s390-64. On s390-32 (zarch-mode), _Unwind_Word has a size of 8 bytes, too. _Unwind_Word is defined in sysdeps/generic/unwind.h as typedef unsigned _Unwind_Word __attribute__((__mode__(__word__))); In libgcc unwind header (<gcc-src>/libgcc/unwind-generic.h) this typedef has changed to "typedef unsigned _Unwind_Word __attribute__((__mode__(__unwind_word__)));" in June 2008. With this mode, _Unwind_Word has a size of 4 bytes on s390-32 (zarch-mode). The same change applies to _Unwind_Sword. Thus this patch updates the unwind header according to these changes. Afterwards, the int-to-pointer-cast-warning is gone away on s390-32 (zarch-mode) and the testsuite runs with the same test-failures as s390-32 (esa-mode) plus FAIL: c++-types-check. Here register_t is expected to has a size of 4 bytes, but it has a size of 8 bytes due to: posix/sys/types.h:205:typedef int register_t __attribute__ ((__mode__ (__word__))); The libgcc-patch for gcc 4.4 can be found here: "[PATCH, spu, unwind] Remove attribute ((mode (word))) from unwind.h" https://gcc.gnu.org/ml/gcc-patches/2008-06/msg00969.html ChangeLog: * sysdeps/generic/unwind.h (_Unwind_Word): Use __mode__(__unwind_word__) instead of __mode__(__word__). (_Unwind_Sword): Likewise.
2015-08-26S390: Fix build error with gcc6 in utf8_utf16-z9.c.Stefan Liebler
This patch fixes the build error with gcc6: array subscript is above array bounds [-Werror=array-bounds] While including loop.c to construct the SINGLE(LOOPFCT) method for converting from UTF-16 to UTF-8, the bytebuf array with length MAX_NEEDED_INPUT is used as inptr. MAX_NEEDED_INPUT defaults to MIN_NEEDED_INPUT if not defined before including loop.c. Thus bytebuf has a length of 2. This patch defines MAX_NEEDED_INPUT to MAX_NEEDED_TO, which is 4. ChangeLog: * sysdeps/s390/s390-64/utf8-utf16-z9.c (MAX_NEEDED_INPUT): New define. (MAX_NEEDED_OUTPUT): New define.
2015-08-26S390: Optimize string, wcsmbs and memory functions.Stefan Liebler
This patch set introduces optimized string, wcsmbs and memory functions for S390/S390x. The functions are accelerated by the usage of the new z13 vector instructions. The Principles of Operations manual for IBM z13 is publically available: http://publibfi.boulder.ibm.com/epubs/pdf/dz9zr010.pdf The support for these instructions in assembler was introduced by commits: -"[Committed] S/390: Add support for IBM z13." (https://sourceware.org/ml/binutils/2015-01/msg00197.html) -"[Committed] S/390: Add more IBM z13 instructions" (https://sourceware.org/ml/binutils/2015-03/msg00088.html) The first patches do preparation for the latter optimization patches. The floating point exception handling - fetestexcept(), ... - is fixed and the platform and hwcap strings are extended. The current ifunc routines memset, memcpy and memcmp are refactored and the ifunc test-framework is now enabled. A S390 specific configure-check tests if the used binutils supports the new vector instructions. The optimized functions are provided via ifunc if the binutils supports the vector instructions. Otherwise a message is dumped to configure output and only the currently used common code functions are available. The optimized functions are implemented in common for s390-32 and s390-64 and the few differences are handled via #ifdef. The ifunc-resolvers are defined in files sysdeps/s390/multiarch/<func>.c, which choose either the current implementation __<func>_c() or the vector implementation __<func>_vx() depending on the HWCAP_S390_VX flag bit in AT_HWCAP field. If the bit is set, the hardware and the kernel are supporting vector registers and instructions. If the used binutils lacks vector-support, then the default implementation in string or wcsmbs directory is included here instead. The file sysdeps/s390/multiarch/<func>-c.c includes the current implementation and defines the function name __<func>_c. The assembler files sysdeps/s390/multiarch/<func>-vx.S with the vector instructions are using the directive '.machine "z13"' to allow building glibc without option '-march=z13'. Additionally the directive '.machinemode "zarch_nohighgprs"' is needed for the 31bit glibc. This mode does not set the highgprs flag in ELF header, which would lead to an unloadable libc on a 31bit kernel. The most optimized string functions are structured in the same way: The first 16 bytes of the string is loaded unaligned via vlbb - vector load to block boundary (e.g. 4k). This instruction loads 16 bytes if possible. In case of a page cross, it only loads the last bytes of the current page without a segmentation fault. Afterwards these first part of string is processed. If e.g. for strlen the end of string is reached within this first part, the function returns. Otherwise the pointer is aligned to 16 byte, so i can load a full vector register with vl without checking for a page cross. Afterwards the first part of string is processed. If e.g. for strlen the end of string is reached within this first part, the function returns. Otherwise the pointer is aligned to 16 byte, so a full vector register can be loaded with vl - vector load - without checking for a page cross. The remaining string is processed in a four times unrolled loop, because benchmark results measured improvements compared to a non unrolled loop. The optimized wide string functions can only handle 4byte aligned string pointers. Although a wchar_t pointer should always be 4byte aligned, the most current common code wide string functions can handle non aligned strings. Thus the optimized functions will fall back to the common code functions in case of a non aligned wide string to behave the same as before this patch. Some string tests can test the string and the wide string version of a function. The remaining ones are extended and new wide string tests are added. This is the same in case of the benchtests. ChangeLog: * NEWS: New item for IBM z13 string optimizations.
2015-08-26S390: Optimize memrchr.Stefan Liebler
This patch provides optimized version of memrchr with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/memrchr-c.c: New File. * sysdeps/s390/multiarch/memrchr-vx.S: Likewise. * sysdeps/s390/multiarch/memrchr.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add memrchr functions. * sysdeps/s390/multiarch/ifunc-impl-list-common.c (__libc_ifunc_impl_list_common): Add ifunc test for memrchr.
2015-08-26S390: Optimize wmemcmp.Stefan Liebler
This patch provides optimized version of wmemcmp with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/wmemcmp-c.c: New File. * sysdeps/s390/multiarch/wmemcmp-vx.S: Likewise. * sysdeps/s390/multiarch/wmemcmp.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add wmemcmp functions. * sysdeps/s390/multiarch/ifunc-impl-list-common.c (__libc_ifunc_impl_list_common): Add ifunc test for wmemcmp. * benchtests/bench-wmemcmp.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wmemcmp.
2015-08-26S390: Optimize wmemset.Stefan Liebler
This patch provides optimized version of wmemset with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/wmemset-c.c: New File. * sysdeps/s390/multiarch/wmemset-vx.S: Likewise. * sysdeps/s390/multiarch/wmemset.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add wmemset functions. * sysdeps/s390/multiarch/ifunc-impl-list-common.c (__libc_ifunc_impl_list_common): Add ifunc test for wmemset. * wcsmbs/wmemset.c: Use WMEMSET if defined. * string/test-memset.c: Add wmemset support. * wcsmbs/test-wmemset.c: New File. * wcsmbs/Makefile (strop-tests): Add wmemset. * benchtests/bench-memset.c: Add wmemset support. * benchtests/bench-wmemset.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wmemset.
2015-08-26S390: Optimize memccpy.Stefan Liebler
This patch provides optimized versions of memccpy with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/memccpy-c.c: New File. * sysdeps/s390/multiarch/memccpy-vx.S: Likewise. * sysdeps/s390/multiarch/memccpy.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add memccpy functions. * sysdeps/s390/multiarch/ifunc-impl-list-common.c (__libc_ifunc_impl_list_common): Add ifunc test for memccpy. * string/memccpy.c: Use MEMCCPY if defined.
2015-08-26S390: Optimize memchr, rawmemchr and wmemchr.Stefan Liebler
This patch provides optimized versions of memchr, rawmemchr and wmemchr with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/memchr-vx.S: New File. * sysdeps/s390/multiarch/memchr.c: Likewise. * sysdeps/s390/multiarch/rawmemchr-c.c: Likewise. * sysdeps/s390/multiarch/rawmemchr-vx.S: Likewise. * sysdeps/s390/multiarch/rawmemchr.c: Likewise. * sysdeps/s390/multiarch/wmemchr-c.c: Likewise. * sysdeps/s390/multiarch/wmemchr-vx.S: Likewise. * sysdeps/s390/multiarch/wmemchr.c: Likewise. * sysdeps/s390/s390-32/multiarch/memchr.c: Likewise. * sysdeps/s390/s390-64/multiarch/memchr.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add memchr, wmemchr and rawmemchr functions. * sysdeps/s390/multiarch/ifunc-impl-list-common.c (__libc_ifunc_impl_list_common): Add ifunc test for memchr, rawmemchr and wmemchr. * wcsmbs/wmemchr.c: Use WMEMCHR if defined. * string/test-memchr.c: Add wmemchr support. * wcsmbs/test-wmemchr.c: New File. * wcsmbs/Makefile (strop-tests): Add wmemchr. * benchtests/bench-memchr.c: Add wmemchr support. * benchtests/bench-wmemchr.c: New File. * benchtests/Makefile (wcsmbs-bench): wmemchr.
2015-08-26S390: Optimize strcspn and wcscspn.Stefan Liebler
This patch provides optimized versions of strcspn and wcscspn with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/strcspn-c.c: New File. * sysdeps/s390/multiarch/strcspn-vx.S: Likewise. * sysdeps/s390/multiarch/strcspn.c: Likewise. * sysdeps/s390/multiarch/wcscspn-c.c: Likewise. * sysdeps/s390/multiarch/wcscspn-vx.S: Likewise. * sysdeps/s390/multiarch/wcscspn.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strcspn and wcscspn functions. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for strcspn, wcscspn. * wcsmbs/wcscspn.c: Use WCSCSPN if defined. * string/test-strcspn.c: Add wcscspn support. * wcsmbs/test-wcscspn.c: New File. * wcsmbs/Makefile (strop-tests): Add wcscspn. * benchtests/bench-strcspn.c: Add wcscspn support. * benchtests/bench-wcscspn.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcscspn.
2015-08-26S390: Optimize strpbrk and wcspbrk.Stefan Liebler
This patch provides optimized versions of strpbrk and wcspbrk with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/strpbrk-c.c: New File. * sysdeps/s390/multiarch/strpbrk-vx.S: Likewise. * sysdeps/s390/multiarch/strpbrk.c: Likewise. * sysdeps/s390/multiarch/wcspbrk-c.c: Likewise. * sysdeps/s390/multiarch/wcspbrk-vx.S: Likewise. * sysdeps/s390/multiarch/wcspbrk.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strpbrk and wcspbrk functions. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for strpbrk, wcspbrk. * wcsmbs/wcspbrk.c: Use WCSPBRK if defined. * string/test-strpbrk.c: Add wcspbrk support. * wcsmbs/test-wcspbrk.c: New File. * wcsmbs/Makefile (strop-tests): Add wcspbrk. * benchtests/bench-strpbrk.c: Add wcspbrk support. * benchtests/bench-wcspbrk.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcspbrk.
2015-08-26S390: Optimize strspn and wcsspn.Stefan Liebler
This patch provides optimized versions of strspn and wcsspn with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/strspn-c.c: New File. * sysdeps/s390/multiarch/strspn-vx.S: Likewise. * sysdeps/s390/multiarch/strspn.c: Likewise. * sysdeps/s390/multiarch/wcsspn-c.c: Likewise. * sysdeps/s390/multiarch/wcsspn-vx.S: Likewise. * sysdeps/s390/multiarch/wcsspn.c: Likewise. * wcsmbs/wcsspn.c: Use WCSSPN if defined. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strspn and wcsspn functions. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for strspn, wcsspn. * string/test-strspn.c: Add wcsspn support. * wcsmbs/test-wcsspn.c: New File. * wcsmbs/Makefile (strop-tests): Add wcsspn. * benchtests/bench-strspn.c: Add wcsspn support. * benchtests/bench-wcsspn.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcsspn.
2015-08-26S390: Optimize strrchr and wcsrchr.Stefan Liebler
This patch provides optimized versions of strrchr and wcsrchr with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/strrchr-c.c: New File. * sysdeps/s390/multiarch/strrchr-vx.S: Likewise. * sysdeps/s390/multiarch/strrchr.c: Likewise. * sysdeps/s390/multiarch/wcsrchr-c.c: Likewise. * sysdeps/s390/multiarch/wcsrchr-vx.S: Likewise. * sysdeps/s390/multiarch/wcsrchr.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strrchr and wcsrchr functions. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for strrchr, wcsrchr. * benchtests/bench-wcsrchr.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcsrchr.
2015-08-26S390: Optimize strchrnul and wcschrnul.Stefan Liebler
This patch provides optimized versions of strchrnul and wcschrnul with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/strchrnul-c.c: New File. * sysdeps/s390/multiarch/strchrnul-vx.S: Likewise. * sysdeps/s390/multiarch/strchrnul.c: Likewise. * sysdeps/s390/multiarch/wcschrnul-c.c: Likewise. * sysdeps/s390/multiarch/wcschrnul-vx.S: Likewise. * sysdeps/s390/multiarch/wcschrnul.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strchrnul and wcschrnul functions. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for strchrnul, wcschrnul. * wcsmbs/wcschrnul.c: Use WCSCHRNUL if defined. * string/test-strchr.c: Add wcschrnul support. * wcsmbs/test-wcschrnul.c: New File. * wcsmbs/Makefile (strop-tests): Add wcschrnul. * benchtests/bench-strchr.c: Add wcschrnul support. * benchtests/bench-wcschrnul.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcschrnul.
2015-08-26S390: Optimize strchr and wcschr.Stefan Liebler
This patch provides optimized versions of strchr and wcschr with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/strchr-c.c: New File. * sysdeps/s390/multiarch/strchr-vx.S: Likewise. * sysdeps/s390/multiarch/strchr.c: Likewise. * sysdeps/s390/multiarch/wcschr-c.c: Likewise. * sysdeps/s390/multiarch/wcschr-vx.S: Likewise. * sysdeps/s390/multiarch/wcschr.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strchr and wcschr functions. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for strchr, wcschr. * string/strchr.c (STRCHR): Define and use macro. * benchtests/bench-wcschr.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcschr.
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