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* fooroland/WshadowRoland McGrath2014-10-1344-343/+430
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* Remove CANCEL-FCT-WAIVE and CANCEL-FILE-WAIVE.Joseph Myers2014-10-103-543/+3
| | | | | | | | | | | | | As far as I can tell, CANCEL-FCT-WAIVE and CANCEL-FILE-WAIVE are old notes from the addition of cancellation support to glibc and are not currently used by any glibc testcases or otherwise in the build process, and it does not seem useful to me to keep them around. This patch removes them. Tested for x86_64. * CANCEL-FCT-WAIVE: Remove file. * CANCEL-FILE-WAIVE: Likewise.
* Don't use INTVARDEF/INTUSE with __libc_enable_secure (bug 14132).Joseph Myers2014-10-107-28/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Continuing the removal of the obsolete INTDEF / INTVARDEF / INTUSE mechanism, this patch replaces its use for __libc_enable_secure with the use of rtld_hidden_data_def and rtld_hidden_proto. Tested for x86_64 that installed stripped shared libraries are unchanged by the patch. [BZ #14132] * elf/dl-sysdep.c (__libc_enable_secure): Use rtld_hidden_data_def instead of INTVARDEF. (_dl_sysdep_start): Do not use INTUSE with __libc_enable_secure. * sysdeps/mach/hurd/dl-sysdep.c (__libc_enable_secure): Use rtld_hidden_data_def instead of INTVARDEF. (_dl_sysdep_start): Do not use INTUSE with __libc_enable_secure. * elf/dl-deps.c (expand_dst): Likewise. * elf/dl-load.c (_dl_dst_count): Likewise. (_dl_dst_substitute): Likewise. (decompose_rpath): Likewise. (_dl_init_paths): Likewise. (open_path): Likewise. (_dl_map_object): Likewise. * elf/rtld.c (dl_main): Likewise. (process_dl_audit): Likewise. (process_envvars): Likewise. * include/unistd.h [IS_IN_rtld] (__libc_enable_secure_internal): Remove declaration. (__libc_enable_secure): Use rtld_hidden_proto.
* remove nested functions from elf/dl-load.cKostya Serebryany2014-10-092-36/+58
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* soft-fp: Use parentheses around macro arguments.Joseph Myers2014-10-099-305/+482
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch cleans up the soft-fp code to use parentheses around macro arguments (where possible; many macro arguments are identifiers used with ## rather than arbitrary expressions, so cannot be put in parentheses). (I'm not aware of any bugs caused by the lack of parentheses, but this is generally good practice. The patch is not exhaustive regarding internal macros where the arguments always come directly from the mantissa of a floating-point number, although probably those should be cleaned up in this regard as well.) Tested for powerpc-nofpu that the installed shared libraries are unchanged by this patch. * soft-fp/double.h [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_RAW_D): Use parentheses around macro arguments. [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_RAW_DP): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_RAW_D): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_RAW_DP): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_D): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_DP): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_SEMIRAW_D): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_SEMIRAW_DP): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_D): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_DP): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_SEMIRAW_D): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_SEMIRAW_DP): Likewise. [_FP_W_TYPE_SIZE < 64] (_FP_SQRT_MEAT_D): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_CMP_D): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_CMP_EQ_D): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_CMP_UNORD_D): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_TO_INT_D): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_FROM_INT_D): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_RAW_D): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_RAW_DP): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_RAW_D): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_RAW_DP): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_D): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_DP): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_SEMIRAW_D): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_SEMIRAW_DP): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_D): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_DP): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_SEMIRAW_D): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_SEMIRAW_DP): Likewise. [_FP_W_TYPE_SIZE >= 64] (_FP_SQRT_MEAT_D): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_CMP_D): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_CMP_EQ_D): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_CMP_UNORD_D): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_TO_INT_D): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_FROM_INT_D): Likewise. * soft-fp/extended.h [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_E): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_EP): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_SEMIRAW_E): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_SEMIRAW_EP): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_E): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_EP): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_SEMIRAW_E): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_SEMIRAW_EP): Likewise. [_FP_W_TYPE_SIZE < 64] (_FP_SQRT_MEAT_E): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_CMP_E): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_CMP_EQ_E): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_CMP_UNORD_E): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_TO_INT_E): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_FROM_INT_E): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_E): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_EP): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_SEMIRAW_E): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_SEMIRAW_EP): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_E): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_EP): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_SEMIRAW_E): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_SEMIRAW_EP): Likewise. [_FP_W_TYPE_SIZE >= 64] (_FP_SQRT_MEAT_E): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_CMP_E): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_CMP_EQ_E): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_CMP_UNORD_E): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_TO_INT_E): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_FROM_INT_E): Likewise. * soft-fp/op-1.h (_FP_FRAC_SRST_1): Likewise. (_FP_FRAC_SRS_1): Likewise. (_FP_FRAC_CLZ_1): Likewise. (_FP_MUL_MEAT_1_imm): Likewise. (_FP_MUL_MEAT_1_wide): Likewise. (_FP_MUL_MEAT_1_hard): Likewise. (_FP_SQRT_MEAT_1): Likewise. (_FP_FRAC_ASSEMBLE_1): Likewise. (_FP_FRAC_DISASSEMBLE_1): Likewise. * soft-fp/op-2.h (_FP_FRAC_CLZ_2): Likewise. (__FP_CLZ_2): Likewise. (_FP_MUL_MEAT_2_wide): Likewise. (_FP_MUL_MEAT_2_wide_3mul): Likewise. (_FP_MUL_MEAT_2_gmp): Likewise. (_FP_MUL_MEAT_2_120_240_double): Likewise. (_FP_SQRT_MEAT_2): Likewise. (_FP_FRAC_ASSEMBLE_2): Likewise. (_FP_FRAC_DISASSEMBLE_2): Likewise. * soft-fp/op-4.h (_FP_FRAC_SRS_4): Likewise. (_FP_FRAC_CLZ_4): Likewise. (_FP_MUL_MEAT_4_wide): Likewise. (_FP_MUL_MEAT_4_gmp): Likewise. (_FP_SQRT_MEAT_4): Likewise. (_FP_FRAC_ASSEMBLE_4): Likewise. (_FP_FRAC_DISASSEMBLE_4): Likewise. * soft-fp/op-common.h (_FP_CMP): Likewise. (_FP_CMP_EQ): Likewise. (_FP_CMP_UNORD): Likewise. (_FP_TO_INT): Likewise. (_FP_FROM_INT): Likewise. [!__FP_CLZ] (__FP_CLZ): Likewise. (_FP_DIV_HELP_imm): Likewise. * soft-fp/quad.h [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_RAW_Q): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_RAW_QP): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_RAW_Q): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_RAW_QP): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_Q): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_QP): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_SEMIRAW_Q): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_UNPACK_SEMIRAW_QP): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_Q): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_QP): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_SEMIRAW_Q): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_PACK_SEMIRAW_QP): Likewise. [_FP_W_TYPE_SIZE < 64] (_FP_SQRT_MEAT_Q): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_CMP_Q): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_CMP_EQ_Q): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_CMP_UNORD_Q): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_TO_INT_Q): Likewise. [_FP_W_TYPE_SIZE < 64] (FP_FROM_INT_Q): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_RAW_Q): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_RAW_QP): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_RAW_Q): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_RAW_QP): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_Q): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_QP): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_SEMIRAW_Q): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_UNPACK_SEMIRAW_QP): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_Q): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_QP): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_SEMIRAW_Q): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_PACK_SEMIRAW_QP): Likewise. [_FP_W_TYPE_SIZE >= 64] (_FP_SQRT_MEAT_Q): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_CMP_Q): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_CMP_EQ_Q): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_CMP_UNORD_Q): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_TO_INT_Q): Likewise. [_FP_W_TYPE_SIZE >= 64] (FP_FROM_INT_Q): Likewise. * soft-fp/single.h (FP_UNPACK_RAW_S): Likewise. (FP_UNPACK_RAW_SP): Likewise. (FP_PACK_RAW_S): Likewise. (FP_PACK_RAW_SP): Likewise. (FP_UNPACK_S): Likewise. (FP_UNPACK_SP): Likewise. (FP_UNPACK_SEMIRAW_S): Likewise. (FP_UNPACK_SEMIRAW_SP): Likewise. (FP_PACK_S): Likewise. (FP_PACK_SP): Likewise. (FP_PACK_SEMIRAW_S): Likewise. (FP_PACK_SEMIRAW_SP): Likewise. (_FP_SQRT_MEAT_S): Likewise. (FP_CMP_S): Likewise. (FP_CMP_EQ_S): Likewise. (FP_CMP_UNORD_S): Likewise. (FP_TO_INT_S): Likewise. (FP_FROM_INT_S): Likewise.
* soft-fp: Support rsigned == 2 in _FP_TO_INT.Joseph Myers2014-10-092-7/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Continuing the addition of soft-fp features in the Linux kernel version, this patch adds _FP_TO_INT support for rsigned == 2 (reduce overflowing results modulo 2^rsize to fit in the destination, used for alpha emulation). The kernel version is buggy; it can left shift by a negative amount when right shifting is required in an overflow case (the kernel version also has other bugs fixed long ago in glibc; at least, spurious exceptions converting to the most negative integer). This version avoids that by handling overflow (other than to 0) for rsigned == 2 along with the normal non-overflow case, which already properly determines the direction in which to shift. Tested for powerpc-nofpu. Some functions get slightly bigger and some get slightly smaller, no doubt as a result of the change to where in the macro "inexact" is raised, but I don't think those changes are significant. Also tested for powerpc-nofpu with the relevant __fix* functions changed to use rsigned == 2 (which is after all just as valid as rsigned == 1 in IEEE terms), including verifying the results and exceptions for various cases of conversions. With these seven patches, the one remaining feature to add for the soft-fp code to have all the features of the kernel version is _FP_TO_INT_ROUND. * soft-fp/op-common.h (_FP_TO_INT): Handle rsigned == 2.
* soft-fp: Support more precise "invalid" exceptions.Joseph Myers2014-10-093-81/+170
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As previously discussed <https://sourceware.org/ml/libc-alpha/2013-10/msg00345.html>, it would be desirable to be able to use the same version of the soft-fp code in the Linux kernel as well as in glibc and libgcc (instead of an old version in the kernel that's missing ten years of bug fixes, performance improvements and new features), and to that end it is useful to add to glibc's copy features in the kernel's copy, even when they are not directly useful in glibc. To that end, this patch adds one of those features: support for more precise "invalid" exceptions describing the particular kind of invalid operation. These are relevant for powerpc emulation, and are also as described in IEEE 754-2008 as sub-exceptions. The set of sub-exceptions here is the union of those supported on powerpc and those from IEEE 754-2008 (the former adds a distinction between 0/0 and Inf/Inf; the latter adds a distinction between Inf*0 from multiplication and the same from fma). This includes sub-exceptions for sqrt, conversions to integer and comparisons that are not supported in the kernel; I see no obvious reason for these being missing from the kernel support, given that they are supported on powerpc so accurate powerpc emulation should generate them. Tested for powerpc-nofpu that the disassembly of installed shared libraries is unchanged by this patch. * soft-fp/soft-fp.h (FP_EX_INVALID_SNAN): New macro. (FP_EX_INVALID_IMZ): Likewise. (FP_EX_INVALID_IMZ_FMA): Likewise. (FP_EX_INVALID_ISI): Likewise. (FP_EX_INVALID_ZDZ): Likewise. (FP_EX_INVALID_IDI): Likewise. (FP_EX_INVALID_SQRT): Likewise. (FP_EX_INVALID_CVI): Likewise. (FP_EX_INVALID_VC): Likewise. * soft-fp/op-common.h (_FP_UNPACK_CANONICAL): Specify more precise "invalid" exceptions. (_FP_CHECK_SIGNAN_SEMIRAW): Likewise. (_FP_ADD_INTERNAL): Likewise. (_FP_MUL): Likewise. (_FP_FMA): Likewise. (_FP_DIV): Likewise. (_FP_CMP_CHECK_NAN): Likewise. (_FP_SQRT): Likewise. (_FP_TO_INT): Likewise. (FP_EXTEND): Likewise.
* Update French translationAllan McRae2014-10-092-2/+6
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* Don't use INTDEF/INTUSE with __cxa_atexit (bug 14132).Joseph Myers2014-10-093-5/+9
| | | | | | | | | | | | | | | This patch removes use of the obsolete INTDEF/INTUSE mechanism for __cxa_atexit, replacing it with libc_hidden_def/libc_hidden_proto. Tested for x86_64 that installed stripped shared libraries are unchanged by the patch. [BZ #14132] * stdlib/cxa_atexit.c (__cxa_atexit): Use libc_hidden_def instead of INTDEF. * include/stdlib.h (__cxa_atexit_internal): Remove declaration. (__cxa_atexit): Use libc_hidden_proto. [!NOT_IN_libc] (__cxa_atexit): Remove macro definition.
* Remove stray *_internal aliases (bug 14132).Joseph Myers2014-10-096-14/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes some stray (unused) *_internal aliases, and function prototypes with no corresponding definitions at all, at least some of which were missed in previous INTDEF / INTUSE removal. Not removed in this patch: __canonicalize_directory_name_internal, noticed in the course of preparing this patch, isn't an alias, but an actual function in sysdeps/mach/hurd/getcwd.c - apparently unused, however. Tested for x86_64 that installed stripped shared libraries are unchanged by this patch. [BZ #14132] * include/wctype.h [!_ISOMAC] (__iswalpha_l_internal): Remove declaration. [!_ISOMAC] (__iswdigit_l_internal): Likewise. [!_ISOMAC] (__iswspace_l_internal): Likewise. [!_ISOMAC] (__iswxdigit_l_internal): Likewise. [!_ISOMAC] (__iswctype_internal): Likewise. * stdio-common/siglist.c (_sys_siglist_internal): Remove alias. * sysdeps/unix/syscalls.list (chown): Remove __chown_internal alias. (fcntl): Remove __fcntl_internal alias. * sysdeps/unix/sysv/linux/hppa/syscalls.list (connect): Remove __connect_internal alias. * sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list (connect): Likewise.
* soft-fp: Add FP_DENORM_ZERO.Joseph Myers2014-10-093-1/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Continuing the addition of soft-fp features used in the Linux kernel, this patch adds soft-fp support for FP_DENORM_ZERO (flushing input subnormal operands to zero of the same sign). There are some differences from the kernel version. In the kernel, the "inexact" exception is set when flushing to zero. This does not appear to match the documented semantics for either of the architectures (alpha and sh) for which the kernel uses FP_DENORM_ZERO, so this patch does not set "inexact" in this case. More operations now use raw or semi-raw unpacking for optimization than did in the ten-year-old soft-fp version in the kernel, so checks of FP_DENORM_ZERO are inserted in those operations. They are also inserted for comparisons (which already used raw unpacking in the old version) as I believe that's the correct thing to do when input subnormals are flushed to zero. They are *not* inserted for _FP_NEG. (If any processors do flush input subnormals to zero for negation, or otherwise vary from the rules implemented when FP_DENORM_ZERO is set, further macros for sfp-machine.h to control this may need to be added.) Although the addition for comparisons will cause FP_EX_DENORM to be set in this case, it still won't be set for comparisons involving subnormals when not flushed to zero. It's quite possible that accurate emulation of processors that have such an exception for subnormal operands will require further changes relating to when FP_EX_DENORM is set (in general, the support for things defined by IEEE should be considered more reliable and mature than the support for things outside the scope of IEEE floating point). Although some processors also have a mode for abrupt underflow - producing zeroes instead of output subnormals - there is no such mode in the kernel's soft-fp, so no such mode is added to glibc's soft-fp (although it could be if someone wanted to emulate such processor support). Tested for powerpc-nofpu that the disassembly of installed shared libraries is unchanged by this patch. * soft-fp/soft-fp.h (FP_DENORM_ZERO): New macro. * soft-fp/op-common.h (_FP_UNPACK_CANONICAL): Check FP_DENORM_ZERO. (_FP_CHECK_FLUSH_ZERO): New macro. (_FP_ADD_INTERNAL): Call _FP_CHECK_FLUSH_ZERO. (_FP_CMP): Likewise. (_FP_CMP_EQ): Likewise. (_FP_TO_INT): Do not set inexact for subnormal arguments if FP_DENORM_ZERO. (FP_EXTEND): Call _FP_CHECK_FLUSH_ZERO. (FP_TRUNC): Likewise.
* soft-fp: Fix _FP_TO_INT latent bug in overflow handling.Joseph Myers2014-10-092-2/+10
| | | | | | | | | | | | | | | | | | | | This patch fixes a latent bug in _FP_TO_INT regarding handling of arguments with maximum exponent (infinities and NaNs). If the maximum exponent is below that calculated as an overflow threshold, such values would incorrectly be treated as normal values for the purposes of the conversion. This could not occur for any of the conversions actually occurring in glibc, libgcc or the Linux kernel (the maximum exponent for float is, just, big enough to ensure overflow for unsigned __int128), but would apply if soft-fp were used for IEEE binary16. Appropriate checks are inserted to ensure that the maximum exponent is always treated as an overflowing exponent, and never as a normal one. Tested for powerpc-nofpu that the disassembly of installed shared libraries is unchanged by this patch. * soft-fp/op-common.h (_FP_TO_INT): Ensure maximum exponent is treated as invalid conversion, not as normal exponent.
* soft-fp: Refactor exception handling for comparisons.Joseph Myers2014-10-0935-116/+132
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch refactors how soft-fp comparisons handle setting exceptions for NaN operands, so that exceptions are set through the FP_CMP macros rather than directly in the C files calling them. The _FP_CMP* and FP_CMP* macros gain an extra argument to specify when exceptions should be set, 0 for no exception setting (I'm not sure this is actually needed - at least it's not needed for IEEE operations in glibc / libgcc, but might be relevant in some cases for kernel use), 1 for exceptions only for signaling NaNs and 2 for exceptions for all NaNs. This argument is handled through _FP_CMP_CHECK_NAN, newly called by the _FP_CMP* macros when a NaN is encountered. Calls to these macros are updated, which eliminates all the existing checking and exception setting in soft-fp *.c files in glibc. Tested for powerpc-nofpu. (The __unord* functions have no code changes; the __eq* / __ge* / __le* functions get slightly larger, but I don't think that's significant.) * soft-fp/op-common.h (_FP_CMP_CHECK_NAN): New macro. (_FP_CMP): Add extra argument EX. Call _FP_CMP_CHECK_NAN. (_FP_CMP_EQ): Likewise. (_FP_CMP_UNORD): Likewise. * soft-fp/double.h (FP_CMP_D): Add extra argument EX. (FP_CMP_EQ_D): Likewise. (FP_CMP_UNORD_D): Likewise. * soft-fp/extended.h (FP_CMP_E): Likewise. (FP_CMP_EQ_E): Likewise. (FP_CMP_UNORD_E): Likewise. * soft-fp/quad.h (FP_CMP_Q): Likewise. (FP_CMP_EQ_Q): Likewise. (FP_CMP_UNORD_Q): Likewise. * soft-fp/single.h (FP_CMP_S): Likewise. (FP_CMP_EQ_S): Likewise. (FP_CMP_UNORD_S): Likewise. * soft-fp/eqdf2.c (__eqdf2): Update call to FP_CMP_EQ_D. * soft-fp/eqsf2.c (__eqsf2): Update call to FP_CMP_EQ_S. * soft-fp/eqtf2.c (__eqtf2): Update call to FP_CMP_EQ_Q. * soft-fp/gedf2.c (__gedf2): Update call to FP_CMP_D. * soft-fp/gesf2.c (__gesf2): Update call to FP_CMP_S. * soft-fp/getf2.c (__getf2): Update call to FP_CMP_Q. * soft-fp/ledf2.c (__ledf2): Update call to FP_CMP_D. * soft-fp/lesf2.c (__lesf2): Update call to FP_CMP_S. * soft-fp/letf2.c (__letf2): Update call to FP_CMP_Q. * soft-fp/unorddf2.c (__unorddf2): Update call to FP_CMP_UNORD_D. * soft-fp/unordsf2.c (__unordsf2): Update call to FP_CMP_UNORD_S. * soft-fp/unordtf2.c (__unordtf2): Update call to FP_CMP_UNORD_Q. * sysdeps/alpha/soft-fp/ots_cmpe.c (internal_compare): Update call to FP_CMP_Q. * sysdeps/sparc/sparc32/soft-fp/q_cmp.c (_Q_cmp): Update call to FP_CMP_Q. * sysdeps/sparc/sparc32/soft-fp/q_cmpe.c (_Q_cmpe): Likewise. * sysdeps/sparc/sparc32/soft-fp/q_feq.c (_Q_feq): Update call to FP_CMP_EQ_Q. * sysdeps/sparc/sparc32/soft-fp/q_fge.c (_Q_fge): Update call to FP_CMP_Q. * sysdeps/sparc/sparc32/soft-fp/q_fgt.c (_Q_fgt): Likewise. * sysdeps/sparc/sparc32/soft-fp/q_fle.c (_Q_fle): Likewise. * sysdeps/sparc/sparc32/soft-fp/q_flt.c (_Q_flt): Likewise. * sysdeps/sparc/sparc32/soft-fp/q_fne.c (_Q_fne): Update call to FP_CMP_EQ_Q. * sysdeps/sparc/sparc64/soft-fp/qp_cmp.c (_Qp_cmp): Update call to FP_CMP_Q. * sysdeps/sparc/sparc64/soft-fp/qp_cmpe.c (_Qp_cmpe): Likewise. * sysdeps/sparc/sparc64/soft-fp/qp_feq.c (_Qp_feq): Update call to FP_CMP_EQ_Q. * sysdeps/sparc/sparc64/soft-fp/qp_fge.c (_Qp_fge): Update call to FP_CMP_Q. * sysdeps/sparc/sparc64/soft-fp/qp_fgt.c (_Qp_fgt): Likewise. * sysdeps/sparc/sparc64/soft-fp/qp_fle.c (_Qp_fle): Likewise. * sysdeps/sparc/sparc64/soft-fp/qp_flt.c (_Qp_flt): Likewise. * sysdeps/sparc/sparc64/soft-fp/qp_fne.c (_Qp_fne): Update call to FP_CMP_EQ_Q.
* soft-fp: Make extensions of subnormals from XFmode to TFmode signal ↵Joseph Myers2014-10-097-2/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | underflow if traps enabled. This patch fixes a soft-fp corner case I previously noted in <https://sourceware.org/ml/libc-alpha/2013-10/msg00349.html>: when trapping on underflow is enabled, extensions of subnormals from XFmode to TFmode need to signal underflow because the result is tiny (but exact, so the underflow flag is not raised unless trapping is enabled). To avoid any excess initialization or tests for other cases of floating-point extensions, a new FP_INIT_TRAPPING_EXCEPTIONS is added that does the initialization required for this particular case (more than FP_INIT_EXCEPTIONS, less than FP_INIT_ROUNDMODE, in general), and FP_NO_EXACT_UNDERFLOW is added to stub out FP_TRAPPING_EXCEPTIONS tests for those cases of extensions where the test would be dead code, to avoid any uninitialized variable warnings. As the relevant case only applies in libgcc, not to any use of soft-fp in glibc, there is no bug report in Bugzilla and no non-default definitions of FP_INIT_TRAPPING_EXCEPTIONS are added by the patch. A testcase will be added to GCC as part of an update of soft-fp in libgcc once this patch is in libc. Tested for powerpc-nofpu that the disassembly of installed shared libraries is unchanged by this patch. Bootstrapped GCC with updated soft-fp with no regressions on x86_64-unknown-linux-gnu and verified that a test of the relevant case passes where it failed before. * soft-fp/op-common.h (FP_EXTEND): When a subnormal input produces a subnormal result, set the underflow exception if trapping on underflow is enabled. * soft-fp/soft-fp.h (FP_INIT_TRAPPING_EXCEPTIONS): New macro. (FP_INIT_EXCEPTIONS): Default to FP_INIT_TRAPPING_EXCEPTIONS. [FP_NO_EXACT_UNDERFLOW] (FP_TRAPPING_EXCEPTIONS): Undefine and redefine to 0. * soft-fp/extenddftf2.c (FP_NO_EXACT_UNDERFLOW): Define. * soft-fp/extendsfdf2.c (FP_NO_EXACT_UNDERFLOW): Likewise. * soft-fp/extendsftf2.c (FP_NO_EXACT_UNDERFLOW): Likewise. * soft-fp/extendxftf2.c (__extendxftf2): Use FP_INIT_TRAPPING_EXCEPTIONS instead of FP_INIT_ROUNDMODE.
* soft-fp: Remove FP_CLEAR_EXCEPTIONS.Joseph Myers2014-10-096-15/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As noted in <https://sourceware.org/ml/libc-alpha/2013-10/msg00516.html>, the soft-fp macro FP_CLEAR_EXCEPTIONS should not be necessary, as soft-fp code should never set an exception and later clear it. In fact, all four uses in glibc (for SPARC) are indeed unnecessary: they appear in files that convert 32-bit or 64-bit integers to IEEE binary128, an operation that can never raise any exceptions. If this was intended to enable the compiler to optimize away any FP_FROM_INT code testing for exceptional cases, we now have a better way of doing this: defining FP_NO_EXCEPTIONS before including soft-fp.h causes all code handling exceptions to be stubbed out, and the rounding mode to be hardwired for round-to-zero, to allow such optimizations for source files where (a) the operation in question, for the particular types in question, can never raise exceptions, but (b) some instances of the operation for other types can, so the macros used in the file do contain references to rounding or exceptions, albeit dead in that particular file. The uses in the Linux kernel are also unnecessary (clearing exceptions at a point where they are already cleared). This patch duly removes FP_CLEAR_EXCEPTIONS, making the SPARC code in question use FP_NO_EXCEPTIONS and stop using exception-related macros. * soft-fp/soft-fp.h (FP_CLEAR_EXCEPTIONS): Remove macro. * sysdeps/sparc/sparc32/soft-fp/q_itoq.c: Define FP_NO_EXCEPTIONS. (_Q_itoq): Do not use FP_DECL_EX, FP_CLEAR_EXCEPTIONS or FP_HANDLE_EXCEPTIONS. * sysdeps/sparc/sparc32/soft-fp/q_lltoq.c: Define FP_NO_EXCEPTIONS. (_Q_lltoq): Do not use FP_DECL_EX, FP_CLEAR_EXCEPTIONS or FP_HANDLE_EXCEPTIONS. * sysdeps/sparc/sparc32/soft-fp/q_ulltoq.c: Define FP_NO_EXCEPTIONS. (_Q_ulltoq): Do not use FP_DECL_EX, FP_CLEAR_EXCEPTIONS or FP_HANDLE_EXCEPTIONS. * sysdeps/sparc/sparc32/soft-fp/q_utoq.c: Define FP_NO_EXCEPTIONS. (_Q_utoq): Do not use FP_DECL_EX, FP_CLEAR_EXCEPTIONS or FP_HANDLE_EXCEPTIONS.
* Don't use INTUSE with __adjtimex (bug 14132).Joseph Myers2014-10-087-12/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | Bug 14132 is removal of the old INTDEF/INTUSE system of *_internal aliases as obsoleted by the hidden_proto / hidden_def system. Various cases were cleaned up in 2012, but some remain. This patch removes the use of this mechanism for __adjtimex. Tested for x86_64 that stripped installed shared libraries are unchanged by the patch. [BZ #14132] * sysdeps/unix/sysv/linux/include/sys/timex.h: New file. * sysdeps/unix/sysv/linux/adjtime.c [!ADJTIMEX] (ADJTIMEX): Do not use INTUSE. [!ADJTIMEX] (INTUSE(__adjtimex)): Remove declaration. * sysdeps/unix/sysv/linux/alpha/adjtime.c (__adjtimex_internal): Remove alias. (__adjtimex): Define using libc_hidden_ver. * sysdeps/unix/sysv/linux/ntp_gettime.c (INTUSE(__adjtimex)): Remove declaration. (ntp_gettime): Call __adjtimex directly. * sysdeps/unix/sysv/linux/ntp_gettimex.c (INTUSE(__adjtimex)): Remove declaration. (ntp_gettimex): Call __adjtimex directly. * sysdeps/unix/sysv/linux/syscalls.list (adjtimex): Remove __adjtimex_internal alias.
* BZ#17460: Fix buffer overrun in nscd --help.Roland McGrath2014-10-084-25/+33
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* Remove unnecessarily nested function in do_lookup_unique.Roland McGrath2014-10-082-27/+36
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* Support and use mixed compat/non-compat aliases in syscalls.list.Joseph Myers2014-10-067-47/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables syscalls.list entries to specify both compat and non-compat symbol versions for the same syscall definition, making use of this for setrlimit / chown / lchown where the inability to specify such aliases showed up in the course of work on bug 14138. The change to make-syscalls.sh is minimal: adding a SHARED conditional on the compat_symbol calls. It remains the case that if a compat symbol version is specified, the syscall is only built for the shared library at all if an explicit symbol version is given for a non-compat symbol (so it's necessary to specify "lchown@@GLIBC_2.0 chown@GLIBC_2.0" rather than just "lchown chown@GLIBC_2.0"). It also remains the case, as already commented in make-syscalls.sh, that no SHLIB_COMPAT conditionals are generated, so there would be problems if the same syscalls.list file, with compat symbols, were used for both configurations that should have those symbols and configurations for which they should be conditioned out with SHLIB_COMPAT. Tested for x86. * sysdeps/unix/make-syscalls.sh (emit_weak_aliases): Condition compat_symbol calls on [SHARED]. * sysdeps/unix/sysv/linux/powerpc/lchown.S: Remove file. * sysdeps/unix/sysv/linux/i386/syscalls.list (oldsetrlimit): Remove. (setrlimit): Add setrlimit@GLIBC_2.0 alias. * sysdeps/unix/sysv/linux/m68k/m680x0/syscalls.list (oldsetrlimit): Remove. (setrlimit): Add setrlimit@GLIBC_2.0 alias. * sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list (lchown): New syscall entry. (oldsetrlimit): Remove. (setrlimit): Add setrlimit@GLIBC_2.0 alias. * sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list (oldsetrlimit): Remove. (setrlimit): Add setrlimit@GLIBC_2.0 alias.
* Move some chown / lchown / fchown definitions to syscalls.list (bug 14138).Joseph Myers2014-10-069-47/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Continuing the move of syscall definitions to syscalls.list, where the removal of support for old kernel versions has made this possible, this patch moves various definitions of chown, lchown and fchown. In most cases the need for special syscalls.list entries (rather than existing generic ones) is because these architectures use chown32, lchown32 and fchown32 as syscall names. Some architectures also have symbol versioning compatibility for older versions of chown having been equivalent to lchown. In the case of powerpc, chown.c (providing the chown@@GLIBC_2.1 default version) is replaced by a syscalls.list entry (for powerpc32; powerpc64 has no need for this because of its more recent minimum symbol version, so can just use the entry in sysdeps/unix/syscalls.list), but lchown.S is left as-is because it provides the compat version of chown as an actual alias for __lchown, which is not yet supported by syscalls.list. This file can be removed once such aliases are supported in syscalls.list. [BZ #14138] * sysdeps/unix/sysv/linux/arm/fchown.c: Remove file. * sysdeps/unix/sysv/linux/arm/lchown.c: Likewise. * sysdeps/unix/sysv/linux/m68k/fchown.c: Likewise. * sysdeps/unix/sysv/linux/m68k/lchown.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/chown.c: Likewise. * sysdeps/unix/sysv/linux/arm/syscalls.list (lchown): Add syscall. (fchown): Likewise. * sysdeps/unix/sysv/linux/m68k/syscalls.list (lchown): Likewise. (fchown): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list (chown): Likewise.
* powerpc: remove linux lowlevellock.hAdhemerval Zanella2014-10-064-347/+15
| | | | | This patch remove the powerpc specific lowlevellock.h and adjust some implementation that rely on __lll_[rel/acq]_instr defines.
* tile: fix copyright header blocks in just-committed filesChris Metcalf2014-10-064-13/+6
| | | | I accidentally committed versions not following the conventions.
* tile: add clock_gettime support via vDSOChris Metcalf2014-10-066-6/+81
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* tile: make the prolog of clone() more conformantChris Metcalf2014-10-062-5/+9
| | | | | With this change we properly set up the frame first, and tear it down last, doing argument checking only when the frame is set up.
* tile: optimize memcmpChris Metcalf2014-10-062-0/+369
| | | | | | | | | | | | | | Customize memcmp.c for tile, using similar tricks from memcpy: - replace MERGE macro with dblalign. - replace memcmp_bytes function with revbytes. - use __glibc_likely. - use post-increment addressing. The schedule is still not perfect: the compiler is not hoisting code above the comparison branch, which could save a bundle or two. memcmp speeds up by 30-40% on shorter aligned tests in benchtest, with some tests with unaligned lengths taking a small performance hit.
* tile: add support for _SC_LEVEL*CACHE* sysconf() queriesChris Metcalf2014-10-062-0/+77
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* tilegx: provide optimized strnlen, strstr, and strcasestrChris Metcalf2014-10-065-5/+406
| | | | | | | | | | | | | | | | | | | | | | strnlen() is based on the existing tile strlen() with length checking added. It speeds up by up to 5x, but on average across the benchtest corpus by around 35%. No regressions are seen. strstr() does 8-byte aligned loads and compares using a 2-byte filter on the first two bytes of the needle and then testing the remaining bytes in needle using memcmp(). It speeds up about 5x in the best case (for "found" needles), about 2x looking at benchtest as a whole, with some slowdowns as much as 45%. on a few cases (including the "fail" case for 128KB search). strcasestr() is based on strstr() but uses a SIMD tolower routine to convert 8-bytes to lower case in 5 instructions. It also uses a 2-byte filter and then strncasecmp() for the remaining bytes. strncasecmp() is not optimized for SIMD, so there is futher room for improvement. However, it is still up to 16x faster for "found" needles, averaging 2x faster on the whole corpus of benchtests. It does slow down by up to 35% on a few cases, similarly to strstr().
* tilegx: optimize string copy_byte() internal functionChris Metcalf2014-10-062-6/+9
| | | | | We can use one "shufflebytes" instruction instead of 3 "bfins" instructions to optimize the string functions.
* Write errors to stdout and not stderr in nptl/tst-setuid3.cArjun Shankar2014-10-062-15/+25
| | | | | nptl/tst-setuid3.c was using the `err' and `errx' functions to write error messages. This wrote to stderr instead of the preferred stdout.
* remove nested functions from elf/dl-deps.cKostya Serebryany2014-10-012-15/+21
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* Move execve to syscalls.list (bug 14138).Joseph Myers2014-10-013-35/+7
| | | | | | | | | | | | | | Continuing the move of syscall definitions to syscalls.list, where previous cleanups have made this possible, this patch moves the definition of execve. (In this case, it was the removal of bounded pointers support, rather than old kernel support, which made the move possible.) Tested for x86_64. [BZ #14138] * sysdeps/unix/sysv/linux/execve.c: Remove file. * sysdeps/unix/sysv/linux/syscalls.list (execve): Add syscall.
* Remove extra whitespace from end of line.Steve Ellcey2014-10-011-1/+1
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* * sysdeps/mips/strcmp.S: New.Steve Ellcey2014-10-012-0/+253
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* Move some *at definitions to syscalls.list (bug 14138).Joseph Myers2014-09-309-272/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Continuing the move of syscall definitions to syscalls.list, where the removal of support for old kernel versions has made this possible, this patch moves definitions of various *at functions in sysdeps/unix/sysv/linux/. These particular moves are straightforward: there are no #includes of these source files, no special architecture-specific versions, no special symbol version handling and no aliases. Each source file can be replaced by a single line in sysdeps/unix/sysv/linux/syscalls.list. Tested for x86_64. [BZ #14138] * sysdeps/unix/sysv/linux/syscalls.list (fchownat): New syscall. (linkat): Likewise. (mkdirat): Likewise. (readlinkat): Likewise. (renameat): Likewise. (symlinkat): Likewise. (unlinkat): Likewise. * sysdeps/unix/sysv/linux/fchownat.c: Remove file. * sysdeps/unix/sysv/linux/linkat.c: Likewise. * sysdeps/unix/sysv/linux/mkdirat.c: Likewise. * sysdeps/unix/sysv/linux/readlinkat.c: Likewise. * sysdeps/unix/sysv/linux/renameat.c: Likewise. * sysdeps/unix/sysv/linux/symlinkat.c: Likewise. * sysdeps/unix/sysv/linux/unlinkat.c: Likewise.
* stdlib/tst-strtod-round.c: Fix build on ARMWill Newton2014-09-303-1/+9
| | | | | | | | | | | | | | | | | Building this test on ARM fails because the prototypes for the long double variants of the math functions are unavailable. Add an additional include guard to math.h that enables long double math function declarations if _LIBC_TEST is defined and define _LIBC_TEST in stdlib/tst-strtod-round.c. ChangeLog: 2014-09-30 Will Newton <will.newton@linaro.org> * math/math.h: Define long double math functions if _LIBC_TEST is defined. * stdlib/tst-strtod-round.c: Define _LIBC_TEST.
* Allow cross-building of testsWill Newton2014-09-303-3/+11
| | | | | | | | | | | | | Allow building tests in a cross configuration without a test wrapper defined. This is helpful for doing simple build testing of tests. ChangeLog: 2014-09-30 Will Newton <will.newton@linaro.org> * localedata/Makefile: Move assignment to tests-special into an ifdef testing run-built-tests. * timezone/Makefile: Likewise.
* Run tst-ld-sse-use.sh with bash.Joseph Myers2014-09-292-1/+6
| | | | | | | | | | | | | | tst-ld-sse-use.sh is a bash script, not a POSIX shell script, and so needs to be run with $(BASH) not $(SHELL) to avoid errors of the form: ../sysdeps/x86/tst-ld-sse-use.sh: 41: ../sysdeps/x86/tst-ld-sse-use.sh: declare: not found (when /bin/sh is dash). This patch makes that change. Tested for x86_64. * sysdeps/x86/Makefile ($(objpfx)tst-ld-sse-use.out): Run script with $(BASH) not $(SHELL).
* Correctly size profiling reloc table (bug 17411)Carlos O'Donell2014-09-293-3/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During auditing or profiling modes the dynamic loader builds a cache of the relocated PLT entries in order to reuse them when called again through the same PLT entry. This way the PLT entry is never completed and the call into the resolver always results in profiling or auditing code running. The problem is that the PLT relocation cache size is not computed correctly. The size of the cache should be "Size of a relocation result structure" x "Number of PLT-related relocations". Instead the code erroneously computes "Size of a relocation result" x "Number of bytes worth of PLT-related relocations". I can only assume this was a mistake in the understanding of the value of DT_PLTRELSZ which is the number of bytes of PLT-related relocs. We do have a DT_RELACOUNT entry, which is a count for dynamic relative relocs, but we have no DT_PLTRELCOUNT and thus we need to compute it. This patch corrects the computation of the size of the relocation table used by the glibc profiling code. For more details see: https://sourceware.org/ml/libc-alpha/2014-09/msg00513.html [BZ #17411] * elf/dl-reloc.c (_dl_relocate_object): Allocate correct amount for l_reloc_result.
* remove nested function hack_digitKostya Serebryany2014-09-292-230/+246
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* Require autoconf 2.69H.J. Lu2014-09-2915-132/+168
| | | | | | | | | | | | | | | | | | | * aclocal.m4: Require autoconf 2.69. * configure: Regenerated. * sysdeps/aarch64/configure: Likewise. * sysdeps/alpha/configure: Likewise. * sysdeps/arm/armv7/configure: Likewise. * sysdeps/arm/configure: Likewise. * sysdeps/ia64/configure: Likewise. * sysdeps/mach/configure: Likewise. * sysdeps/mips/configure: Likewise. * sysdeps/s390/configure: Likewise. * sysdeps/unix/sysv/linux/mips/configure: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/configure: Likewise. * sysdeps/alpha/configure.ac: Avoid empty lines at the end of file. * sysdeps/ia64/configure.ac: Likewise.
* Remove shlib-versions entries redundant with DEFAULT entries.Joseph Myers2014-09-265-10/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a shlib-versions file has a DEFAULT line, it's not necessary to specify the same default minimum symbol version on the lines for individual libraries. If those lines otherwise duplicate the default SONAME for the library in question, they can be removed completely. This patch makes such cleanups: version entries for ld.so are removed (leaving just the definition of the architecture-specific dynamic linker name) and entries for libpthread are removed completely (since the default is libpthread.so.0). Tested for x86_64 that the installed shared libraries are unchanged by this patch. There are various architectures (hppa, ia64, mips, sh, sparc64) that define minimum symbol versions (or in the case of mips, omission of symbol versions) only for particular libraries without a DEFAULT line. None of these are equivalent to something simpler with a DEFAULT line because all have some other libraries, not explicitly mentioned, with symbol versions that would be omitted were such a line used. In the mips case I'm pretty sure it was a mistake not to omit the 2.1 symbols for libthread_db; for the others I don't know if it was a mistake or deliberate that some symbols in various libraries have 2.0 or 2.1 versions despite other libraries having a 2.2 minimum. This concludes the shlib-versions cleanups I'm aware of. * sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions: Do not specify symbol version for ld.so. Do not include entry for libpthread. * sysdeps/unix/sysv/linux/s390/s390-64/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions: Likewise.
* Clean up gnu/lib-names.h generation (bug 14171).Joseph Myers2014-09-2616-65/+148
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch eliminates the mixture of SONAME information in shlib-versions files and SONAME information used to generate gnu/lib-names.h in makefiles, with the information in the makefiles being removed so all this information comes from the shlib-versions files. So that gnu/lib-names.h supports multiple ABIs, it is changed to be generated on the same basis as gnu/stubs.h: when there are multiple ABIs, gnu/lib-names.h is a wrapper header (the same header installed whatever ABI is being built) and separate headers such as gnu/lib-names-64.h contain the substantive contents (only one such header being installed by any glibc build). The rules for building gnu/lib-names.h were moved from Makeconfig to Makerules because they need to come after sysdeps makefiles are included (now that "ifndef abi-variants" is a toplevel conditional on the rules rather than $(abi-variants) being evaluated later inside the commands for a rule). Tested for x86_64 and x86 that the installed shared libraries are unchanged by this patch, and examined the installed gnu/lib-names*.h headers by hand. Also tested the case of a single ABI (where there is just a single header installed, again like stubs.h) by hacking abi-variants to empty for x86_64. [BZ #14171] * Makeconfig [$(build-shared) = yes] ($(common-objpfx)soversions.mk): Don't handle SONAMEs specified in makefiles. [$(build-shared) = yes && $(soversions.mk-done) = t] ($(common-objpfx)gnu/lib-names.h): Remove rule. [$(build-shared) = yes && $(soversions.mk-done) = t] ($(common-objpfx)gnu/lib-names.stmp): Likewise. Split and moved to Makerules. [$(build-shared) = yes && $(soversions.mk-done) = t] (before-compile): Don't append $(common-objpfx)gnu/lib-names.h here. [$(build-shared) = yes && $(soversions.mk-done) = t] (common-generated): Don't append gnu/lib-names.h and gnu/lib-names.stmp here. * Makerules [$(build-shared) = yes && $(soversions.mk-done) = t] (lib-names-h-abi): New variable. [$(build-shared) = yes && $(soversions.mk-done) = t] (lib-names-stmp-abi): Likewise. [$(build-shared) = yes && $(soversions.mk-done) = t && abi-variants] (before-compile): Append $(common-objpfx)$(lib-names-h-abi). [$(build-shared) = yes && $(soversions.mk-done) = t && abi-variants] (common-generated): Append gnu/lib-names.h. [$(build-shared) = yes && $(soversions.mk-done) = t && abi-variants] (install-others-nosubdir): Depend on $(inst_includedir)/$(lib-names-h-abi). [$(build-shared) = yes && $(soversions.mk-done) = t && abi-variants] ($(common-objpfx)gnu/lib-names.h): New rule. [$(build-shared) = yes && $(soversions.mk-done) = t] ($(common-objpfx)$(lib-names-h-abi)): New rule. [$(build-shared) = yes && $(soversions.mk-done) = t] ($(common-objpfx)$(lib-names-stmp-abi)): Likewise. [$(build-shared) = yes && $(soversions.mk-done) = t] (common-generated): Append $(lib-names-h-abi) and $(lib-names-stmp-abi). * scripts/lib-names.awk: Do not handle multi being set. * sysdeps/unix/sysv/linux/aarch64/Makefile (abi-lp64-ld-soname): Remove variable. (abi-lp64_be-ld-soname): Likewise. * sysdeps/unix/sysv/linux/arm/Makefile (abi-soft-ld-soname): Likewise. (abi-hard-ld-soname): Likewise. * sysdeps/unix/sysv/linux/i386/shlib-versions: New file. * sysdeps/unix/sysv/linux/mips/Makefile (abi-o32_soft-ld-soname): Remove variable. (abi-o32_hard-ld-soname): Likewise. (abi-o32_soft_2008-ld-soname): Likewise. (abi-o32_hard_2008-ld-soname): Likewise. (abi-n32_soft-ld-soname): Likewise. (abi-n32_hard-ld-soname): Likewise. (abi-n32_soft_2008-ld-soname): Likewise. (abi-n32_hard_2008-ld-soname): Likewise. (abi-n64_soft-ld-soname): Likewise. (abi-n64_hard-ld-soname): Likewise. (abi-n64_soft_2008-ld-soname): Likewise. (abi-n64_hard_2008-ld-soname): Likewise. * sysdeps/unix/sysv/linux/powerpc/Makefile (abi-64-v1-ld-soname): Likewise. (abi-64-v2-ld-soname): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions: Add ld.so entries. * sysdeps/unix/sysv/linux/s390/Makefile (abi-64-ld-soname): Remove variable. * sysdeps/unix/sysv/linux/s390/s390-64/shlib-versions: Add ld.so entry. * sysdeps/unix/sysv/linux/x86/Makefile (abi-32-ld-soname): Remove variable. (abi-64-ld-soname): Likewise. (abi-x32-ld-soname): Likewise. * sysdeps/unix/sysv/linux/x86_64/64/shlib-versions: Add ld.so entry. * sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions: Likewise.
* Move some setrlimit definitions to syscalls.list (bug 14138).Joseph Myers2014-09-2311-43/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bug 14138 is followup cleanup after removal of support for old Linux kernel versions: moving syscalls to syscalls.list where the only reason for using C definitions was kernel version conditionals that are no longer present. This patch deals with the case of setrlimit (sysdeps/unix/sysv/linux/i386/setrlimit.c, included by various other architectures). Where needed (where there is also a compat symbol for setrlimit@GLIBC_2.0), new syscalls.list entries are added. Where not needed (where there is no such compat symbol and the minimum symbol version for libc is 2.2 or later), no such entries are added as that in sysdeps/unix/syscalls.list will suffice. Thus arm and sh need no such entries, while m68k and powerpc need entries only in a subdirectory syscalls.list file rather than for all configurations that previously used setrlimit.c. (setrlimit@@GLIBC_2.2 and setrlimit@GLIBC_2.0 are now semantically identical - the new symbol version was about a change of types from signed to unsigned and the former compatibility code for dealing with large unsigned arguments on old kernels is no longer needed or present, having been removed with support for pre-2.4 kernels. However, making the two versions into aliases doesn't work at present: the case of having both default and non-default symbol versions on the same syscalls.list line results in a compat_symbol call in code built for static libc, which doesn't compile. I don't suppose it would be hard to generate SHARED conditionals from make-syscalls.sh to fix this, but in any case this patch doesn't make things any worse, as the functions weren't aliases before the patch either.) Tested for x86, and ran ABI tests for ARM as an example of an architecture where the setrlimit.c file was just removed without adding syscalls.list entries. [BZ #14138] * sysdeps/unix/sysv/linux/arm/setrlimit.c: Remove file. * sysdeps/unix/sysv/linux/i386/setrlimit.c: Likewise. * sysdeps/unix/sysv/linux/m68k/setrlimit.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/setrlimit.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/setrlimit.c: Likewise. * sysdeps/unix/sysv/linux/sh/setrlimit.c: Likewise. * sysdeps/unix/sysv/linux/i386/syscalls.list (setrlimit): Add syscall entry for GLIBC_2.2 symbol version. * sysdeps/unix/sysv/linux/m68k/m680x0/syscalls.list (setrlimit): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list (setrlimit): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list (setrlimit): Likewise.
* ARM: Don't define _SYS_AUXV_H in sysdep.hWill Newton2014-09-233-2/+8
| | | | | | | | | | | | | | | | sysdep.h was defining _SYS_AUXV_H in order to avoid an include guard check in hwcap.h. Unfortunately it didn't undefine it so it could leak out into code and caused a build failure with -Wimplicit-function-declaration building tst-auxv on ARM. ChangeLog: 2014-09-23 Will Newton <will.newton@linaro.org> * sysdeps/unix/sysv/linux/arm/bits/hwcap.h: Check for _LINUX_ARM_SYSDEP_H include guard too. * sysdeps/unix/sysv/linux/arm/sysdep.h (_SYS_AUXV_H): Remove define.
* Fix prototype of eventfd.Rasmus Villemoes2014-09-204-3/+10
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* Sync recvmmsg prototype with kernel usage.Ondřej Bílka2014-09-204-5/+11
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* stdlib/longlong.h: Add __udiv_w_sdiv prototype.Andreas Krebbel2014-09-192-1/+6
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* New test for ftimeArjun Shankar2014-09-183-1/+65
| | | | | | | | | This test verifies the sanity of ftime and exposes bugs such as BZ 2014-09-17 Arjun Shankar <arjun.is@lostca.se> * time/tst-ftime.c: New test. * time/Makefile (tests): Add tst-ftime.
* soft-fp: Fix comment formatting.Joseph Myers2014-09-178-183/+121
| | | | | | | | | | | | | | | | | This patch fixes formatting of comments in soft-fp (in particular, the normal style in glibc does not have a leading '*' on each line, and comments should start with capital letters and end with ". */"). Tested for powerpc-nofpu that the disassembly of installed shared libraries is unchanged by this patch. * soft-fp/extended.h: Fix comment formatting. * soft-fp/op-1.h: Likewise. * soft-fp/op-2.h: Likewise. * soft-fp/op-4.h: Likewise. * soft-fp/op-8.h: Likewise. * soft-fp/op-common.h: Likewise. * soft-fp/soft-fp.h: Likewise.
* soft-fp: Correct _FP_TO_INT formatting.Joseph Myers2014-09-172-5/+11
| | | | | | | | | | This patch corrects some soft-fp formatting that failed to follow the GNU Coding Standards. Tested for powerpc-nofpu that the disassembly of installed shared libraries is unchanged by this patch. * soft-fp/op-common.h (_FP_TO_INT): Correct formatting.