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2016-11-24x86_64: fix static build of __memcpy_chk for compilers defaulting to PIC/PIEAurelien Jarno
When glibc is compiled with gcc 6.2 that has been configured with to default to PIC/PIE, the static version of __memcpy_chk is not built, as the test is done on PIC instead of SHARED. Fix the test to check for SHARED, like it is done for similar functions like memmove_chk. Changelog: * sysdeps/x86_64/memcpy_chk.S (__memcpy_chk): Check for SHARED instead of PIC.
2016-11-23Fix SH4 FP_ILOGB0 (bug 20859).Joseph Myers
ISO C requires that the value of FP_ILOGB0 must be INT_MIN or -INT_MAX. In sysdeps/sh/sh4/bits/mathdef.h, it's 0x80000001; that is, a positive unsigned value that would be -INT_MAX if converted to int, which is not valid (there's no actual constraint on the type, but whatever the type the integer value must be one of the two permitted, and types other than int don't really make sense). This patch makes the ABI-compatible change to (-0x7fffffff). (The testcase handles positive and negative sign separately to avoid any issues with implicit conversions that could result in e.g. INT_MIN converted to uintmax_t wrongly passing.) Tested (compilation only) with build-many-glibcs.py. [BZ #20859] * sysdeps/sh/sh4/bits/mathdef.h (FP_ILOGB0): Define to (-0x7fffffff) instead of 0x80000001. * math/test-fp-ilogb-constants.c: New file. * math/Makefile (tests): Add test-fp-ilogb-constants.
2016-11-23MIPS: Use R_MICROMIPS_JALR rather than R_MIPS_JALR in microMIPS codeMaciej W. Rozycki
In a microMIPS compilation of `.init' code use the R_MICROMIPS_JALR relocation intended for PIC call relaxation in microMIPS code rather than the corresponding R_MIPS_JALR relocation meant for regular MIPS code only. * sysdeps/mips/mips32/crti.S (JALR_RELOC): New macro. (_init): Use it in place of hardcoded R_MIPS_JALR. * sysdeps/mips/mips64/n32/crti.S (JALR_RELOC): New macro. (_init): Use it in place of hardcoded R_MIPS_JALR. * sysdeps/mips/mips64/n64/crti.S (JALR_RELOC): New macro. (_init): Use it in place of hardcoded R_MIPS_JALR.
2016-11-23Fix x86_64 -mfpmath=387 float_t, double_t (bug 20787).Joseph Myers
Bug 20787 reports that, while float_t and double_t for 32-bit x86 properly respect -mfpmath=sse, for x86_64 they fail to reflect -mfpmath=387, which is valid if unusual and results in FLT_EVAL_METHOD being 2. This patch fixes the definitions to respect __FLT_EVAL_METHOD__ in that case, arranging for the test that the types correspond with FLT_EVAL_METHOD to be run with both -mfpmath=387 and -mfpmath=sse. Note: this patch will also have the effect of making float_t and double_t be long double for x86_64 with -mfpmath=sse+387, when FLT_EVAL_METHOD is -1. It seems reasonable for x86_64 to be consistent with 32-bit x86 in this case (and that definition is conservatively safe, in that it makes the types correspond to the widest evaluation format that might be used). Tested for x86-64 and x86. [BZ #20787] * sysdeps/x86/bits/mathdef.h (float_t): Do not define to float if [__x86_64__] when __FLT_EVAL_METHOD__ is nonzero. (double_t): Do not define to double if [__x86_64__] when __FLT_EVAL_METHOD__ is nonzero. * sysdeps/x86/fpu/test-flt-eval-method-387.c: New file. * sysdeps/x86/fpu/test-flt-eval-method-sse.c: Likewise. * sysdeps/x86/fpu/Makefile [$(subdir) = math] (tests): Add test-flt-eval-method-387 and test-flt-eval-method-sse. [$(subdir) = math] (CFLAGS-test-flt-eval-method-387.c): New variable. [$(subdir) = math] (CFLAGS-test-flt-eval-method-sse.c): Likewise.
2016-11-22Allow [f]statfs64 to alias [f]statfsSteve Ellcey
* sysdeps/unix/sysv/linux/fstatfs64.c: Hide prototypes for fstatfs and __fstatfs. Make them aliases of __fstatfs64 if STATFS_IS_STATFS64 is set to non-zero. * sysdeps/unix/sysv/linux/statfs64.c: Ditto for __statfs, statfs, and __statfs64. * sysdeps/unix/sysv/linux/generic/wordsize-32/fstatfs.c: Do not define __fstatfs and fstatfs if STATFS_IS_STATFS64 is non-zero. * sysdeps/unix/sysv/linux/generic/wordsize-32/statfs.c: Ditto for __statfs and statfs. * sysdeps/unix/sysv/linux/alpha/kernel_stat.h: Set STATFS_IS_STATFS64 to 0. * sysdeps/unix/sysv/linux/generic/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/hppa/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/ia64/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/microblaze/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/mips/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/powerpc/powerpc32/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/powerpc/powerpc64/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/s390/s390-64/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/sparc/sparc32/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/sparc/sparc64/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/x86_64/kernel_stat.h: Ditto.
2016-11-21Always define XSTAT_IS_XSTAT64Steve Ellcey
* sysdeps/unix/sysv/linux/generic/kernel_stat.h: Set XSTAT_IS_XSTAT64 to 0 when in 32 bit mode. * sysdeps/unix/sysv/linux/hppa/kernel_stat.h: Set XSTAT_IS_XSTAT64 to 0. * sysdeps/unix/sysv/linux/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/microblaze/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/mips/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/powerpc/powerpc32/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/sparc/sparc32/kernel_stat.h: Ditto. * sysdeps/unix/sysv/linux/fxstat.c: Replace #ifdef with #if on XSTAT_IS_XSTAT64 test. * sysdeps/unix/sysv/linux/fxstatat.c: Ditto. * sysdeps/unix/sysv/linux/generic/lxstat.c: Ditto. * sysdeps/unix/sysv/linux/generic/xstat.c: Ditto. * sysdeps/unix/sysv/linux/i386/fxstat.c: Ditto. * sysdeps/unix/sysv/linux/i386/fxstatat.c: Ditto. * sysdeps/unix/sysv/linux/i386/lxstat.c: Ditto. * sysdeps/unix/sysv/linux/i386/xstat.c: Ditto. * sysdeps/unix/sysv/linux/lxstat.c: Ditto. * sysdeps/unix/sysv/linux/mips/xstatconv.c: Ditto. * sysdeps/unix/sysv/linux/xstat.c: Ditto. * sysdeps/unix/sysv/linux/xstatconv.c: Ditto.
2016-11-19Add setpayload, setpayloadf, setpayloadl.Joseph Myers
TS 18661-1 defines functions for manipulating the payloads of NaNs. This patch implements the setpayload functions for glibc; these set a number (pointed to by a function argument) to a quiet NaN with the given payload, or to +0 if the given payload is not valid. The implementations are structured to allow the substance of the implementation to be shared with the setpayloadsig functions when those are added. The semantics in the TS are not entirely clear in the case where the payload passed to the function is zero (see discussion on the WG14 reflector last month). This patch implements what seems the most sensible interpretation, that -0 is never valid to give as the payload, but +0 is valid in the case where the kind of NaN being generated has its high mantissa bit set so payload 0 is actually possible in such a NaN. Tested for x86_64, x86, mips64 and powerpc. * math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (setpayload): New declaration. * math/Versions (setpayload): New libm symbol at version GLIBC_2.25. (setpayloadf): Likewise. (setpayloadl): Likewise. * math/Makefile (libm-calls): Add s_setpayloadF. * math/libm-test.inc (struct test_Ffp_b1_data): Rename to struct test_Ff_b1_data. (RUN_TEST_Ff_b1): New macro. (RUN_TEST_LOOP_Ff_b1): Likewise. (canonicalize_test_data): Update type. (setpayload_test_data): New array. (setpayload_test): New function. (main): Call setpayload_test. * manual/arith.texi (FP Bit Twiddling): Document setpayload, setpayloadf and setpayloadl. * manual/libm-err-tab.pl: Update comment on interfaces without ulps tabulated. * sysdeps/ieee754/dbl-64/s_setpayload.c: New file. * sysdeps/ieee754/dbl-64/s_setpayload_main.c: Likewise. * sysdeps/ieee754/dbl-64/wordsize-64/s_setpayload_main.c: Likewise. * sysdeps/ieee754/flt-32/s_setpayloadf.c: Likewise. * sysdeps/ieee754/flt-32/s_setpayloadf_main.c: Likewise. * sysdeps/ieee754/ldbl-128/s_setpayloadl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_setpayloadl_main.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_setpayloadl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_setpayloadl_main.c: Likewise. * sysdeps/ieee754/ldbl-96/s_setpayloadl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_setpayloadl_main.c: Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-setpayload.c: Likewise. * sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add setpayload. (CFLAGS-nldbl-setpayload.c): New variable. * sysdeps/nacl/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
2016-11-18Fix hurd __access_noerrno implementation.Adhemerval Zanella
This patch fixes some hurd bits from commit afcf3cd8eb that added the __access_noerrno internal symbol. It basically removes the nonrequired __hurd_fail_noerrno (since the 'err' argument is ignored) and fixes a typo for EACCES. However, as stated on maillist [1] this __access_noerrno may still be unsafe to run during initialization of tunables on the Hurd. The access_common calls __hurd_file_name_lookup, which calls __hurd_file_name_lookup_retry, which can set errno. [1] https://sourceware.org/ml/libc-alpha/2016-11/msg00646.html
2016-11-18tile: create new math-tests.h headerChris Metcalf
The header makes tile use the new mechanisms for suppressing exception and rounding support (the ROUNDING_TESTS_xxx() and EXCEPTION_TESTS_xxx macros). More importantly, it also now sets SNAN_TESTS_PRESERVE_PAYLOAD to 0, since the tilegx fp hardware does not preserve NaN payloads.
2016-11-18Make tile's set_dataplane API compatibility-onlyChris Metcalf
The set_dataplane() API in <sys/dataplane.h> originally supported the Tilera version of Linux as shipped to our customers. Once we started upstreaming the dataplane support in the kernel, the API changed to use fcntl() as part of the current task-isolation patch series. It doesn't seem like continuing to support the old API is useful for newly-compiled code, and even supporting the old glibc binary API on an upstream kernel that supports the new task isolation mode isn't straightforward, since the semantics have changed in ways that make it hard to map the old semantics precisely to the new ones, so just return ENOSYS.
2016-11-18MIPS: Add `.insn' to ensure a text label is defined as code not dataMaciej W. Rozycki
Avoid a build error with microMIPS compilation and recent versions of GAS which complain if a branch targets a label which is marked as data rather than microMIPS code: ../sysdeps/mips/mips32/crti.S: Assembler messages: ../sysdeps/mips/mips32/crti.S:72: Error: branch to a symbol in another ISA mode make[2]: *** [.../csu/crti.o] Error 1 as commit 9d862524f6ae ("MIPS: Verify the ISA mode and alignment of branch and jump targets") closed a hole in branch processing, making relocation calculation respect the ISA mode of the symbol referred. This allowed diagnosing the situation where an attempt is made to pass control from code assembled for one ISA mode to code assembled for a different ISA mode and either relaxing the branch to a cross-mode jump or if that is not possible, then reporting this as an error rather than letting such code build and then fail unpredictably at the run time. This however requires the correct annotation of branch targets as code, because the ISA mode is not relevant for data symbols and is therefore not recorded for them. The `.insn' pseudo-op is used for this purpose and has been supported by GAS since: Wed Feb 12 14:36:29 1997 Ian Lance Taylor <ian@cygnus.com> * config/tc-mips.c (mips_pseudo_table): Add "insn". (s_insn): New static function. * doc/c-mips.texi: Document .insn. so there has been no reason to avoid it where required. More recently this pseudo-op has been documented, by the microMIPS architecture specification[1][2], as required for the correct interpretation of any code label which is not followed by an actual instruction in an assembly source. Use it in our crti.S files then, to mark that the trailing label there with no instructions following is indeed not a code bug and the branch is legitimate. References: [1] "MIPS Architecture for Programmers, Volume II-B: The microMIPS32 Instruction Set", MIPS Technologies, Inc., Document Number: MD00582, Revision 5.04, January 15, 2014, Section 7.1 "Assembly-Level Compatibility", p. 533 [2] "MIPS Architecture for Programmers, Volume II-B: The microMIPS64 Instruction Set", MIPS Technologies, Inc., Document Number: MD00594, Revision 5.04, January 15, 2014, Section 8.1 "Assembly-Level Compatibility", p. 623 2016-11-18 Matthew Fortune <Matthew.Fortune@imgtec.com> Maciej W. Rozycki <macro@imgtec.com> * sysdeps/mips/mips32/crti.S (_init): Add `.insn' pseudo-op at `.Lno_weak_fn' label. * sysdeps/mips/mips64/n32/crti.S (_init): Likewise. * sysdeps/mips/mips64/n64/crti.S (_init): Likewise.
2016-11-17Consolidate Linux setrlimit and getrlimit implementationAdhemerval Zanella
This patch consolidates all Linux setrlimit and getrlimit on the default sysdeps/unix/sysv/linux/{set,get}rlimit{64}.c. It contains two exceptions: 1. mips32 and mips64n32 which requires a versioned symbol for GLIBC 2.19 and higher due a broken RLIM64_INFINITY constant. 2. sparc32 does not define a compat symbol for getrlimit64 for old 2GB limit. I am not sure if it is required, but a RLIM_INFINITY fix [1] change its definition without adding a compat symbol. This patch does not aim to address this possible issue, it follow current symbol export. The default implementation uses prlimit64 for 64 bit rlim_t ({set,get}rlimit64) and if it fails with ENOSYS it fall back to {get,set}rlimit syscall. This code path is only used on kernel older than 2.6.36 (basically now only x86) and I avoid to user __ASSUME_PRLIMTI64 to simplify the implementation. Once x86 moves to be on par with other architectures regarding minimum kernel supported we can get rid of using old syscalls and default path. A new type size define is added, __RLIM_T_MATCHES_RLIM64_T, where is set as default for 64 bits ports. This allows the default implementation to avoid {get,set}rlimit building and alias {get,set}rlimit64 to {get,set}rlimit. Checked on x86_64, i386, armhf, aarch64, and powerpc64le. I also did a sanity build plus check-abi on all other supported architectures. [1] Commit 9c96ff23858b0759e12ad69e3c4599931c90bee8 Adhemerval Zanella <adhemerval.zanella@linaro.org> Yury Norov <ynorov@caviumnetworks.com> * bits/typesizes.h (__RLIM_T_MATCHES_RLIM64_T): define. * sysdeps/unix/sysv/linux/alpha/bits/typesizes.h (__RLIM_T_MATCHES_RLIM64_T): Likewise. * sysdeps/unix/sysv/linux/generic/bits/typesizes.h (__RLIM_T_MATCHES_RLIM64_T): Likewise. * sysdeps/unix/sysv/linux/s390/bits/typesizes.h [__s390x__] (__RLIM_T_MATCHES_RLIM64_T): Likewise. * sysdeps/unix/sysv/linux/sparc/bits/typesizes.h [__arch64__ || __sparcv9] (__RLIM_T_MATCHES_RLIM64_T): Likewise. * sysdeps/unix/sysv/linux/x86/bits/typesizes.h [__86_64__] (__RLIM_T_MATCHES_RLIM64_T): Likewise. * sysdeps/unix/sysv/linux/arm/Makefile [$(subdir) = resource] (sysdep_routines): Remove oldgetrlimit64. * sysdeps/unix/sysv/linux/i386/Makefile [$(subdir) = resource] (sysdep_routines): Likewise. * sysdeps/unix/sysv/linux/m68k/Makefile [$(subdir) = resource] (sysdep_routines): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/Makefile [$(subdir) = resource] (sysdep_routines): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/Makefile [$(subdir) = resource] (sysdep_routines): Likewise. * sysdeps/unix/sysv/linux/arm/getrlimit64.c: Remove file. * sysdeps/unix/sysv/linux/arm/oldgetrlimit64.c: Likewise. * sysdeps/unix/sysv/linux/hppa/getrlimit64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getrlimit64.c: Likewise. * sysdeps/unix/sysv/linux/i386/oldgetrlimit64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getrlimit64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/oldgetrlimit64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getrlimit64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/oldgetrlimit64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getrlimit64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/oldgetrlimit64.c: Likewise. * sysdeps/unix/sysv/linux/sh/getrlimit64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getrlimit64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/setrlimit64.c: Likewise. * sysdeps/sysv/linux/generic/wordsize-32/syscalls.list: Remove setrlimit and getrlimit. * sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/i386/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/getrlimit.c: New file. * sysdeps/unix/sysv/linux/sparc/getrlimit64.c: Likewise. * sysdeps/unix/sysv/linux/setrlimit.c: Likewise. * sysdeps/unix/sysv/linux/getrlimit64.c (__getrlimit64): Handle __RLIM_T_MATCHES_RLIM64_T and add alias if defined. (__old_getrlimit64): Add compatibility symbol. * sysdeps/unix/sysv/linux/setrlimit64.c (__setrlimit): Likewise.
2016-11-17Make Alpha <sys/user.h> self-contained.Joseph Myers
The check-installed-headers tests show up that the Alpha <sys/user.h> is not self-contained, using size_t without including any header that defines it. This patch fixes it by including <stddef.h>, as done for other architectures' versions of this header. Tested for Alpha (compilation only). * sysdeps/unix/sysv/linux/alpha/sys/user.h: Include <stddef.h>.
2016-11-16New internal function __access_noerrnoAdhemerval Zanella
Implement an internal version of __access called __access_noerrno that avoids setting errno. This is useful to check accessibility of files very early on in process startup i.e. before TLS setup. This allows tunables to replace MALLOC_CHECK_ safely (i.e. check existence of /etc/suid-debug to enable/disable MALLOC_CHECK) and at the same time initialize very early so that it can override IFUNCs. Checked on x86_64. * hurd/hurd.h (__hurd_fail_noerrno): New function. * include/unistd.h [IS_IN (rtld) || !defined SHARED]: Declare __access_noerrno. * io/access.c (__access_noerrno): New function. * sysdeps/mach/hurd/access.c (hurd_fail_seterrno): New function. (hurd_fail_seterrno): Likewise. (access_common): Likewise. (__access_noerrno): Likewise. * sysdeps/nacl/access.c (__access_noerrno): Likewise. * sysdeps/unix/sysv/linux/access.c (__access_noerrno): Likewise. * sysdeps/nacl/nacl-interfaces.h (NACL_CALL_NOERRNO): New macro.
2016-11-16Fix SH4 register-dump.h for soft-float.Joseph Myers
This patch fixes SH4 register-dump.h to declare a variable inside the the build for soft-float. Tested (compilation only) for SH4 soft-float. * sysdeps/unix/sysv/linux/sh/sh4/register-dump.h (register_dump): Only declare fpregs if [__SH_FPU_ANY__].
2016-11-15Make SH ucontext always match current kernels.Joseph Myers
As discussed in the thread starting at <https://sourceware.org/ml/libc-alpha/2015-06/msg00657.html>, there are various problems with the sigcontext / mcontext / ucontext structures on SH. The soft-float SH4 case in fact does not build at present, with errors processing sysdeps/unix/sysv/linux/sh/sh4/ucontext_i.sym with gen-as-const.awk ("error: 'mcontext_t {aka struct <anonymous>}' has no member named 'fpregs'"). Linux 4.8 (commit bbe6c77857c38f4acbdc4fc70399515226d1859a) moved to always using the same sigcontext structure on SH, with room for floating-point registers whether or not present on the processor. This patch makes the glibc header match. Tested (compilation only) for sh4-linux-gnu hard float, and in conjunction with other fixes for soft float. * sysdeps/unix/sysv/linux/sh/sys/ucontext.h [__SH4__ || __SH4A__]: Make code unconditional. [!(__SH4__ || __SH4A__)]: Remove conditional code.
2016-11-15s390x: Add hidden definition for __sigsetjmpFlorian Weimer
2016-11-14Make tilegx32 install libraries in lib32 directories.Joseph Myers
This patch makes tilegx32 install libraries in lib32 directories, matching what GCC expects and avoiding conflict with 64-bit libraries installed in lib directories. Tested (compilation only) for tilegx (32-bit and 64-bit, BE and LE, GCC 5). * sysdeps/unix/sysv/linux/tile/tilegx/configure.ac: Use LIBC_SLIBDIR_RTLDDIR for tilegx32. * sysdeps/unix/sysv/linux/tile/tilegx/configure: Regenerated.
2016-11-11Make SH <sys/user.h> self-contained.Joseph Myers
The check-installed-headers tests show up that the SH <sys/user.h> is not self-contained, using size_t without including any header that defines it. This patch fixes it by including <stddef.h>, as done for other architectures' versions of this header. Tested for SH3 and SH4 (compilation only). * sysdeps/unix/sysv/linux/sh/sys/user.h: Include <stddef.h>.
2016-11-10Make sure tilepro uses kernel atomics fo atomic_storeChris Metcalf
It's not legal for raw stores to be mixed with atomic operations on tilepro, since the atomics are managed by kernel fast syscalls. It's possible for a hardware store and a kernel fast atomic to race with each other in such a way that the hardware store is lost. Suppose you have an initial zero value, and you race with a store of 2 and a kernel cmpxchg from 0 to 1. The legal output is only 2: either the store hit first and the cmpxchg failed, or the cmpxchg hit first and succeeded, then was overwritten by the 2. But if the kernel cmpxchg starts first and loads the zero, then the store hits and sets the value to 2, the cmpxchg will still decide it was successful and write the 1, leaving the value illegally set to 1. Using atomic_exchange variants to implement atomic_store fixes this problem for tilepro.
2016-11-10Refactor some libm type-generic macros.Joseph Myers
This patch refactors some type-generic libm macros, in both math.h and math_private.h, to be based on a common __MATH_TG macro rather than all replicating similar logic to choose a function to call based on the type of the argument. This should serve to illustrate what I think float128 support for such macros should look like: common macros such as __MATH_TG may need different definitions depending on whether float128 is supported in glibc, so that the individual macros themselves do not need conditionals on float128 support. Tested for x86_64, x86, mips64 and powerpc. * math/math.h (__MATH_TG): New macro. [__USE_ISOC99] (fpclassify): Define using __MATH_TG. [__USE_ISOC99] (signbit): Likewise. [__USE_ISOC99] (isfinite): Likewise. [__USE_ISOC99] (isnan): Likewise. [__USE_ISOC99] (isinf): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (issignaling): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (__MATH_EVAL_FMT2): New macro. [__GLIBC_USE (IEC_60559_BFP_EXT)] (iseqsig): Define using __MATH_TG and __MATH_EVAL_FMT2. * sysdeps/generic/math_private.h (fabs_tg): Define using __MATH_TG. * sysdeps/ieee754/ldbl-128ibm/bits/iscanonical.h [!__NO_LONG_DOUBLE_MATH] (__iscanonicalf): New macro. [!__NO_LONG_DOUBLE_MATH] (__iscanonical): Likewise. [!__NO_LONG_DOUBLE_MATH] (iscanonical): Define using __MATH_TG. * sysdeps/ieee754/ldbl-96/bits/iscanonical.h (__iscanonicalf): New macro. (__iscanonical): Likewise. (iscanonical): Define using __MATH_TG.
2016-11-10Fix sh4 build with __ASSUME_ST_INO_64_BIT redefinitionAdhemerval Zanella
Since 327792c sh4 builds fails with: ../sysdeps/unix/sysv/linux/kernel-features.h:49:0: error: "__ASSUME_ST_INO_64_BIT" redefined [-Werror] #define __ASSUME_ST_INO_64_BIT 1 ^ In file included from ../sysdeps/unix/sysv/linux/sysdep.h:19:0, from ../sysdeps/unix/sysv/linux/sh/sysdep.h:24, from ../sysdeps/unix/sysv/linux/sh/sh4/sysdep.h:4, from <stdin>:1: ../sysdeps/unix/sysv/linux/sh/kernel-features.h:47:0: note: this is the location of the previous definition #define __ASSUME_ST_INO_64_BIT 0 It is because sh4 kernel-features.sh is included multiple times without guards and this patch fixes by adding them. Tested on a sh4-linux-gnu build. * sysdeps/unix/sysv/linux/sh/kernel-features.h: Add include guards.
2016-11-10Consolidate Linux access implementationAdhemerval Zanella
This patch consolidates the Linux access implementation on sysdeps/unix/sysv/linux/access.c. Similar to auto-generation through syscalls.list, __NR_access is check and __NR_faccessat is used only for newer architectures (where __NR_access is not defined). Checked on x86_64. * sysdeps/unix/sysv/linux/access.c: New file. * sysdeps/unix/sysv/linux/generic/access.c: Remove file.
2016-11-10Add definitions to sysdeps/tile/tilepro/bits/wordsize.h.Steve Ellcey
* sysdeps/tile/tilepro/bits/wordsize.h: Define __WORDSIZE32_SIZE_ULONG and __WORDSIZE32_PTRDIFF_LONG.
2016-11-10Regenerate ULPs for aarch64Siddhesh Poyarekar
* sysdeps/aarch64/libm-test-ulps: Regenerated.
2016-11-09Consolidate Linux truncate implementationsAdhemerval Zanella
This patch consolidates all Linux truncate implementation on sysdeps/unix/sysv/linux/truncate{64}.c. It is based on {INTERNAL,INLINE}_SYSCALL patch [1] to simplify the syscall construction. General idea is to build ftruncate iff __OFF_T_MATCHES_OFF64_T is not defined, otherwise ftruncate64 will be build and ftruncate will be an alias. The fallocate will use old compat syscall and pass 32-bit off_t argument, while fallocate64 will handle the correct off64_t passing using __ALIGNMENT_ARG and SYSCALL_LL64 macros. Tested on x86_64, i386, aarch64, and armhf. * sysdeps/unix/sysv/linux/arm/truncate64.c: Remove file. * sysdeps/unix/sysv/linux/generic/wordsize-32/truncate.c: Likewise. * sysdeps/sysv/linux/generic/wordsize-32/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/truncate.c: New file. * sysdeps/unix/sysv/linux/truncate64.c (truncate64): Use INLINE_SYSCALL_CALL, __ALIGNMENT_ARG and SYSCALL_LL64 macros. * sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (truncate): Remove. * sysdeps/unix/sysv/linux/wordsize-64/syscalls.list (truncate): Likewise. [1] https://sourceware.org/ml/libc-alpha/2016-08/msg00646.html
2016-11-09Consolidate Linux ftruncate implementationsAdhemerval Zanella
THis patch consolidates all Linux ftruncate implementation on sysdeps/unix/sysv/linux/ftruncate{64}.c. It is based on {INTERNAL,INLINE}_SYSCALL patch [1] to simplify the syscall construction. General idea is to build ftruncate iff __OFF_T_MATCHES_OFF64_T is not defined, otherwise ftruncate64 will be build and ftruncate will be an alias. The fallocate will use old compat syscall and pass 32-bit off_t argument, while fallocate64 will handle the correct off64_t passing using __ALIGNMENT_ARG and SYSCALL_LL64 macros. Tested on x86_64, i386, aarch64, and armhf. * posix/tst-truncate-common.c: New file. * posix/tst-truncate.c: Use tst-truncate-common.c. * posix/tst-truncate64.c: Likewise and add LFS tests. * sysdeps/unix/sysv/linux/arm/ftruncate64.c: Remove file. * sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate64.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/ftruncate64.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/ftruncate64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/ftruncate64.c: Likewise. * sysdeps/unix/sysv/linux/ftruncate.c: New file. * sysdeps/unix/sysv/linux/ftruncate64.c (__ftruncate64): Use INLINE_SYSCALL_CALL, __ALIGNMENT_ARG and SYSCALL_LL64 macros. [__OFF_T_MATCHES_OFF64_T] (ftruncate): Add alias. * sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (ftruncate): Remove. * sysdeps/unix/sysv/linux/wordsize-64/syscalls.list (ftruncate): Likewise. [1] https://sourceware.org/ml/libc-alpha/2016-08/msg00646.html
2016-11-08Add localplt.data for sh.Joseph Myers
This patch adds a localplt.data file for sh so that test passes. The architecture-specific entries are for _Unwind_Find_FDE, _exit and __errno_location. Tested for sh3 and sh4. * sysdeps/unix/sysv/linux/sh/localplt.data: New file.
2016-11-08Add localplt.data for hppa.Joseph Myers
This patch adds a localplt.data file for hppa so that test passes. Architecture maintainers should feel free to clean up the sysdeps code so that some or all of the system-specific entries libc.so: _exit libc.so: __sigsetjmp libc.so: _IO_funlockfile libc.so: sigprocmask libc.so: __errno_location libpthread.so: __errno_location are no longer needed. Tested for hppa. Note: check-execstack and check-textrel still fail; you may wish to look at those to get to a clean baseline there (they are less obvious for people not familiar with the architecture). * sysdeps/unix/sysv/linux/hppa/localplt.data: New file.
2016-11-08Update alpha localplt.data.Joseph Myers
This patch updates alpha localplt.data so the localplt test passes in my compile-only all-ABIs glibc testing. The failures I see without this patch are: Missing required PLT reference: ld.so: __tls_get_addr Missing required PLT reference: ld.so: free Now, __tls_get_addr can be made optional. For free, rather than making it optional as in libc.so it seems better to mark all the malloc-related symbols in both libc.so and ld.so as allowing an R_ALPHA_GLOB_DAT relocation as an alternative to using a PLT entry, so this patch does so. Tested for alpha. * sysdeps/unix/sysv/linux/alpha/localplt.data: Make __tls_get_addr optional in ld.so. Allow R_ALPHA_GLOB_DAT relocation for malloc, calloc, realloc, free, memalign and __libc_memalign rather than making them optional.
2016-11-08Update nios2 localplt.data.Joseph Myers
This patch updates nios2 localplt.data so the localplt test passes in my compile-only all-ABIs glibc testing. A new PLT entry for __extendsfdf2 is added. Tested for nios2. * sysdeps/unix/sysv/linux/nios2/localplt.data: Add __extendsfdf2 for libc.so.
2016-11-08Consolidate lseek/lseek64/llseek implementationsAdhemerval Zanella
This patch consolidates all Linux lseek/lseek64/llseek implementation in on on sysdeps/unix/sysv/linux/lseek{64}.c. It also removes the llseek file and instead consolidate the LFS lseek implementation on lseek64.c as for other LFS symbols implementations. The general idea is: - lseek: ABIs that not define __OFF_T_MATCHES_OFF64_T will preferable use __NR__llseek if kernel supports it, otherwise they will use __NR_lseek. ABIs that defines __OFF_T_MATCHES_OFF64_T won't produce any symbol. - lseek64: ABIs with __OFF_T_MATCHES_OFF64_T will preferable use __NR_lseek (since it will use 64-bit arguments without low/high splitting) and __NR__llseek if __NR_lseek is not defined (for some ILP32 ports). - llseek: files will be removed and symbols will be aliased ot lseek64. ABI without __OFF_T_MATCHES_OFF64_T and without __NR_llseek (basically MIPS64n32 so far) are covered by building lseek with off_t as expected and lseek64 using __NR_lseek (as expected for off64_t being passed using 64-bit registers). For this consolidation I mantained the x32 assembly specific implementation because to correctly fix this it would required both the x32 fix for {INLINE,INTERNAL}_SYSCALL [1] and a wrapper to correctly subscribe it to return 64 bits instead of default 32 bits (as for times). It could a future cleanup. It is based on my previous {INTERNAL,INLINE}_SYSCALL_CALL macro [2], although it is mainly for simplification. Tested on x86_64, i686, aarch64, armhf, and powerpc64le. * nptl/Makefile (libpthread-routines): Remove ptw-llseek and add ptw-lseek64. * sysdeps/unix/sysv/linux/Makefile (sysdeps_routines): Remove llseek. * sysdeps/unix/sysv/linux/alpha/Makefile (sysdeps_routines): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/llseek.c: Remove file. * sysdeps/unix/sysv/linux/generic/wordsize-32/lseek.c: Remove file. * sysdeps/unix/sysv/linux/mips/mips64/llseek.c: Likewise. * sysdeps/unix/sysv/linux/llseek.c: Remove file. * sysdeps/unix/sysv/linux/lseek.c: New file. * sysdeps/unix/sysv/linux/lseek64.c: Add default Linux implementation. * sysdeps/unix/sysv/linux/mips/mips64/syscalls.list: Remove lseek and __libc_lseek64 from auto-generation. * sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/lseek64.S: New file. [1] https://sourceware.org/ml/libc-alpha/2016-08/msg00443.html [2] https://sourceware.org/ml/libc-alpha/2016-08/msg00646.html
2016-11-07Define __ASSUME_ST_INO_64_BIT on all platforms.Steve Ellcey
* sysdeps/unix/sysv/linux/alpha/kernel-features.h: #define __ASSUME_ST_INO_64_BIT as 0 * sysdeps/unix/sysv/linux/sh/kernel-features.h: Likewise. * sysdeps/unix/sysv/linux/fxstat64.c: Replace #ifdef with #if over the code where __ASSUME_ST_INO_64_BIT is used. * sysdeps/unix/sysv/linux/lxstat64.c: Likewise. * sysdeps/unix/sysv/linux/xstat64.c: Likewise. * sysdeps/unix/sysv/linux/xstatconv.c: Likewise.
2016-11-07nptl: Document the reason why __kind in pthread_mutex_t is part of the ABIFlorian Weimer
2016-11-04Fix sparc build due missing __WORDSIZE_TIME64_COMPAT32 definitionAdhemerval Zanella
This patch adds the missing Linux sparc definitions from d060cd0. Both value are copied from default sparc value [1] and with this fix now both sparc 32 and 64 bits builds on Linux. * sysdeps/unix/sysv/linux/sparc/bits/wordsize.h (__WORDSIZE_TIME64_COMPAT32): Define for both 32 and 64 bits. [1] sysdeps/sparc/sparc{32,64}/bits/wordsize.h
2016-11-04Fix alpha sqrt fegetenv namespace (bug 20768).Joseph Myers
On alpha, sqrt (a C90 function) brings in references to fegetenv (C99), resulting in linknamespace test failures: [initial] __sqrt -> [libm.a(w_sqrt.o)] __ieee754_sqrt -> [libm.a(e_sqrt.o)] __feholdexcept -> [libm.a(feholdexcpt.o)] fegetenv This patch fixes this by making __feholdexcept call __fegetenv instead of fegetenv. Tested for Alpha (compilation only). [BZ #20768] * sysdeps/alpha/fpu/feholdexcpt.c (__feholdexcept): Call __fegetenv instead of fegetenv.
2016-11-04Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139).Joseph Myers
manual/libm-err-tab.pl hardcodes a list of names for particular platforms (mapping from sysdeps directory name to friendly name for the manual). This goes against the principle of keeping information about individual platforms in their corresponding sysdeps directory, and the list is also very out-of-date regarding supported platforms and their corresponding sysdeps directories. This patch fixes this by adding a libm-test-ulps-name file alongside each libm-test-ulps file. The script then gets the friendly name from that file, which is required to exist, so it no longer needs to allow for the mapping being missing. Tested for x86_64. [BZ #14139] * manual/libm-err-tab.pl (%pplatforms): Initialize to empty. (find_files): Obtain platform name from libm-test-ulps-name and store in %pplatforms. (canonicalize_platform): Remove. (print_platforms): Use $pplatforms directly. (by_platforms): Do not allow for platforms missing from %pplatforms. * sysdeps/aarch64/libm-test-ulps-name: New file. * sysdeps/alpha/fpu/libm-test-ulps-name: Likewise. * sysdeps/arm/libm-test-ulps-name: Likewise. * sysdeps/generic/libm-test-ulps-name: Likewise. * sysdeps/hppa/fpu/libm-test-ulps-name: Likewise. * sysdeps/i386/fpu/libm-test-ulps-name: Likewise. * sysdeps/i386/i686/fpu/multiarch/libm-test-ulps-name: Likewise. * sysdeps/ia64/fpu/libm-test-ulps-name: Likewise. * sysdeps/m68k/coldfire/fpu/libm-test-ulps-name: Likewise. * sysdeps/m68k/m680x0/fpu/libm-test-ulps-name: Likewise. * sysdeps/microblaze/libm-test-ulps-name: Likewise. * sysdeps/mips/mips32/libm-test-ulps-name: Likewise. * sysdeps/mips/mips64/libm-test-ulps-name: Likewise. * sysdeps/nios2/libm-test-ulps-name: Likewise. * sysdeps/powerpc/fpu/libm-test-ulps-name: Likewise. * sysdeps/powerpc/nofpu/libm-test-ulps-name: Likewise. * sysdeps/s390/fpu/libm-test-ulps-name: Likewise. * sysdeps/sh/libm-test-ulps-name: Likewise. * sysdeps/sparc/fpu/libm-test-ulps-name: Likewise. * sysdeps/tile/libm-test-ulps-name: Likewise. * sysdeps/x86_64/fpu/libm-test-ulps-name: Likewise.
2016-11-04Make MIPS <sys/user.h> self-contained.Joseph Myers
The check-installed-headers tests show up that the MIPS <sys/user.h> is not self-contained, using size_t without including any header that defines it. This patch fixes it by including <stddef.h>, as done for other architectures' versions of this header. Tested for MIPS (all 24 ABIs, compilation only). * sysdeps/unix/sysv/linux/mips/sys/user.h: Include <stddef.h>.
2016-11-04XFAIL check-execstack for MIPS.Joseph Myers
This patch marks the check-execstack test as expected to fail for MIPS, with a comment referencing previous RFC discussion of the changes that would be needed to support non-executable stacks on MIPS. Tested for MIPS (all 24 ABIs). * sysdeps/unix/sysv/linux/mips/Makefile [$(subdir) = elf] (test-xfail-check-execstack): New variable.
2016-11-04Add localplt.data for MIPS.Joseph Myers
This patch adds a localplt.data file for MIPS, reflecting the peculiarities of MIPS ELF that mean this test cannot detect PLT entries (there aren't any in shared libraries), not GOT entries (because of the implicit relocation). Tested for MIPS (all 24 ABIs). * sysdeps/mips/localplt.data: New file.
2016-11-04Define wordsize.h macros everywhereSteve Ellcey
* bits/wordsize.h: Add documentation. * sysdeps/aarch64/bits/wordsize.h : New file * sysdeps/generic/stdint.h (PTRDIFF_MIN, PTRDIFF_MAX): Update definitions. (SIZE_MAX): Change ifdef to if in __WORDSIZE32_SIZE_ULONG check. * sysdeps/gnu/bits/utmp.h (__WORDSIZE_TIME64_COMPAT32): Check with #if instead of #ifdef. * sysdeps/gnu/bits/utmpx.h (__WORDSIZE_TIME64_COMPAT32): Ditto. * sysdeps/mips/bits/wordsize.h (__WORDSIZE32_SIZE_ULONG, __WORDSIZE32_PTRDIFF_LONG, __WORDSIZE_TIME64_COMPAT32): Add or change defines. * sysdeps/powerpc/powerpc32/bits/wordsize.h: Likewise. * sysdeps/powerpc/powerpc64/bits/wordsize.h: Likewise. * sysdeps/s390/s390-32/bits/wordsize.h: Likewise. * sysdeps/s390/s390-64/bits/wordsize.h: Likewise. * sysdeps/sparc/sparc32/bits/wordsize.h: Likewise. * sysdeps/sparc/sparc64/bits/wordsize.h: Likewise. * sysdeps/tile/tilegx/bits/wordsize.h: Likewise. * sysdeps/tile/tilepro/bits/wordsize.h: Likewise. * sysdeps/unix/sysv/linux/alpha/bits/wordsize.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/wordsize.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/wordsize.h: Likewise. * sysdeps/wordsize-32/bits/wordsize.h: Likewise. * sysdeps/wordsize-64/bits/wordsize.h: Likewise. * sysdeps/x86/bits/wordsize.h: Likewise.
2016-11-04An optimized memchr was missing for AArch64. This version is similar toWilco Dijkstra
strchr and is significantly faster than the C version. 2016-11-04 Wilco Dijkstra <wdijkstr@arm.com> Kevin Petit <kevin.petit@arm.com> * sysdeps/aarch64/memchr.S (__memchr): New file.
2016-11-04Handle tilegx* machine names.Joseph Myers
This patch makes sysdeps/tile/preconfigure handle tilegx* machine names instead of just plain tilegx. That matches GCC, and in particular allows a big-endian toolchain to use the tilegxbe-linux-gnu name when configuring both GCC and glibc. Tested with compilation for tilegxbe-linux-gnu, both 32-bit and 64-bit (building a subsequent GCC against that glibc still falls over because of both 32-bit and 64-bit libraries going in the lib directory, as noted at <https://sourceware.org/ml/libc-alpha/2016-11/msg00129.html>). * sysdeps/tile/preconfigure: Accept tilegx* instead of tilegx.
2016-10-31hurd: Fix spurious port deallocationBrent W. Baccala
* sysdeps/mach/hurd/dl-sysdep.c (__mmap): Do not deallocate memobj_wr when it is MACH_PORT_NULL.
2016-10-28Document a behavior of an elided pthread_rwlock_unlockTulio Magno Quites Machado Filho
Explain that pthread_rwlock_unlock may crash if called on a lock not held by the current thread.
2016-10-28powerpc: Fix TOC stub on powerpc64 clone()Tulio Magno Quites Machado Filho
Use a function call to _exit() so that the linker can create a TOC stub instead of just a branch. Tested on powerpc64.
2016-10-28crypt: Use internal names for the SHA-2 block functionsFlorian Weimer
These functions are externally visible with a static libcrypt library.
2016-10-28Check IFUNC definition in unrelocated shared library [BZ #20019]H.J. Lu
Calling an IFUNC function defined in unrelocated shared library may lead to segfault. This patch issues an error message to request relinking the shared library if it references IFUNC function defined in the unrelocated shared library. [BZ #20019] * sysdeps/i386/dl-machine.h (elf_machine_rel): Check IFUNC definition in unrelocated shared library. * sysdeps/x86_64/dl-machine.h (elf_machine_rela): Likewise.
2016-10-28i386: Support CFLAGS which imply -fno-omit-frame-pointer [BZ #20729]Florian Weimer
2016-10-27Fix a sparc header conformtest failure.David S. Miller
* sysdeps/unix/sysv/linux/sparc/sys/user.h: Include stddef.h
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