1. 07 3月, 2016 1 次提交
    • R
      generalize mips-specific reloc code not to hard-code sym/type encoding · 71392a91
      Rich Felker 提交于
      this change is made in preparation for adding the mips64 port, which
      needs a 64-bit (and mips64-specific) form of the R_INFO macro, but
      it's a better abstraction anyway.
      
      based on part of the mips64 port patch by Mahesh Bodapati and Jaydeep
      Patil of Imagination Technologies.
      71392a91
  2. 05 3月, 2016 1 次提交
  3. 03 3月, 2016 2 次提交
    • N
      add sched_getcpu vDSO support · db66ef1f
      Nathan Zadoks 提交于
      This brings the call to an actually usable speed.
      Quick unscientific benchmark: 14ns : 102ns :: vDSO : syscall
      db66ef1f
    • N
      add sched_getcpu · 98d33573
      Nathan Zadoks 提交于
      This is a GNU extension, but a fairly minor one, for a system call that
      otherwise has no libc wrapper.
      98d33573
  4. 02 3月, 2016 4 次提交
    • S
      fix ^* at the start of a complete BRE · 29b13575
      Szabolcs Nagy 提交于
      This is a workaround to treat * as literal * at the start of a BRE.
      
      Ideally ^ would be treated as an anchor at the start of any BRE
      subexpression and similarly $ would be an anchor at the end of any
      subexpression.  This is not required by the standard and hard to do
      with the current code, but it's the existing practice.  If it is
      changed, * should be treated as literal after such anchor as well.
      29b13575
    • S
      fix * at the start of a BRE subexpression · 39ea71fb
      Szabolcs Nagy 提交于
      commit 7eaa76fc made * invalid at
      the start of a BRE subexpression, but it should be accepted as
      literal * there according to the standard.
      
      This patch does not fix subexpressions starting with ^*.
      39ea71fb
    • M
    • R
      handle non-matching address family entries in hosts file · 6d70c08a
      Rich Felker 提交于
      name_from_hosts failed to account for the possibility of an address
      family error from name_from_numeric, wrongly counting such a return as
      success and using the uninitialized address data as part of the
      results passed up to the caller.
      
      non-matching address family entries cannot simply be ignored or
      results would be inconsistent with respect to whether AF_UNSPEC or a
      specific address family is queried. instead, record that a
      non-matching entry was seen, and fail the lookup with EAI_NONAME of no
      matching-family entries are found.
      6d70c08a
  5. 24 2月, 2016 2 次提交
  6. 22 2月, 2016 1 次提交
  7. 20 2月, 2016 1 次提交
  8. 19 2月, 2016 4 次提交
    • R
      add arch tuple matching for nt32 and nt64 in configure · 4c101e15
      Rich Felker 提交于
      the nt32 and nt64 archs will be provided by the midipix project for
      building musl on top of its posix-like syscall layer for windows. at
      present the needed arch files are in a separate repository, but having
      the tuple matching in the upstream configure script should make it
      possible to overlay the arch files without needing any further
      patching.
      4c101e15
    • R
      work around regression building for armhf with clang (compiler bug) · 71c334f9
      Rich Felker 提交于
      commit e4355bd6 moved the math asm
      from external source files to inline asm, but unfortunately, all
      current releases of clang use the wrong inline asm constraint codes
      for float and double ("w" and "P" instead of "t" and "w",
      respectively). this patch adds detection for the bug in configure,
      and, for now, just disables the affected asm on broken clang versions.
      71c334f9
    • R
      improve macro logic for enabling arm math asm · ed97dfd9
      Rich Felker 提交于
      in order to take advantage of the fpu in -mfloat-abi=softfp mode, the
      __VFP_FP__ (presence of vfp fpu) was checked instead of checking for
      __ARM_PCS_VFP (hardfloat EABI variant). however, the latter macro is
      the one that's actually specified by the ABI documents rather than
      being compiler-specific, and should also be checked in case __VFP_FP__
      is not defined on some compilers or some configurations.
      ed97dfd9
    • R
      update authors/contributors list · 790580b2
      Rich Felker 提交于
      these additions were made based on scanning commit authors since the
      last update, at the time of the 1.1.7 release, and adding everyone
      with either substantial code contributions or a pattern of ongoing
      simple patch submission.
      790580b2
  9. 18 2月, 2016 5 次提交
    • R
      fix regression in SH/FDPIC dynamic linker · 2d0290de
      Rich Felker 提交于
      the dynamic linker was found to hang when used as the PT_INTERP, but
      not when invoked as a command. the mechanism of this failure was not
      determined, but the cause is clear:
      
      commit 5552ce52 removed the SHARED
      macro, but arch/sh/crt_arch.h is still using it to choose the right
      form of the crt/ldso entry point code. moving the forced definition
      from rcrt1.c to dlstart.c restores the old behavior. eventually the
      logic should be changed to fully remove the SHARED macro or at least
      rename it to something more reasonable.
      2d0290de
    • R
      partly revert detection of broken float in configure · 5030e4a0
      Rich Felker 提交于
      commit 80fbaac4 broke all soft-float
      archs, where gcc defines __GCC_IEC_559==0 because rounding modes and
      exception flags are not supported. for now, just check for
      __FAST_MATH__ as an indication of broken float. this won't detect all
      possible misconfigurations but it probably catches the most common
      one.
      5030e4a0
    • R
      support clean/distclean make targets in unconfigured tree · 157e2849
      Rich Felker 提交于
      commit 2f853dd6 moved the error
      handling for $(ARCH) not being set such that it applied to all
      targets, including clean and distclean. previously these targets
      worked even in an unconfigured tree. to restore the old behavior, make
      most of the makefile body conditional on $(ARCH) being set/non-empty
      and produce the error via a fake "all" target in the conditional
      branch for the case where $(ARCH) is empty.
      157e2849
    • R
      adjust makefile to make crt/ and ldso/ sources arch-replaceable · 63bcda4d
      Rich Felker 提交于
      prior to commit 2f853dd6 which
      overhauled the makefile for out-of-tree builds, crt/*.c files were
      replaceable by crt/$(ARCH)/*.s, and top-level ldso/ did not exist (its
      files were under src/ldso). since then, crti.o and crtn.o have been
      hard-coded as arch-specific, but none of the other files in crt/ or
      ldso/ were replaceable at all.
      
      in preparation for easy integration with midipix, which has a port of
      musl to windows, it needs to be possible to override the ELF-specific
      code in these files. making the same arch-replacements system work
      throughout the whole source tree also improves consistency and removes
      the need for some file-specific rules (crti.o and crtn.o) in the
      makefile.
      63bcda4d
    • R
  10. 17 2月, 2016 3 次提交
    • R
      in crypt-sha*, reject excessive rounds as error rather than clamping · cf115059
      Rich Felker 提交于
      the reference implementation clamps rounds to [1000,999999999]. we
      further limited rounds to at most 9999999 as a defense against extreme
      run times, but wrongly clamped instead of treating out-of-bounds
      values as an error, thereby producing implementation-specific hash
      results. fixing this should not break anything since values of rounds
      this high are not useful anyway.
      cf115059
    • R
      fix unlikely corner cases in getopt's message printing · ef2b5e9f
      Rich Felker 提交于
      like fputs (see commit 10a17dfb), the
      message printing code for getopt assumed that fwrite only returns 0 on
      failure, but it can also happen on success if the total length to be
      written is zero. programs with zero-length argv[0] were affected.
      
      commit 500c6886 introduced this
      problem in getopt by fixing the fwrite behavior to conform to the
      requirements of ISO C. previously the wrong expectations of the getopt
      code were met by the fwrite implementation.
      ef2b5e9f
    • R
      fix assumption in fputs that fwrite returning 0 implies an error · 10a17dfb
      Rich Felker 提交于
      internally, the idiom of passing nmemb=1 to fwrite and interpreting
      the return value of fwrite (which is necessarily 0 or 1) as
      failure/success is fairly widely used. this is not correct, however,
      when the size argument is unknown and may be zero, since C requires
      fwrite to return 0 in that special case. previously fwrite always
      returned nmemb on success, but this was changed for conformance with
      ISO C by commit 500c6886.
      10a17dfb
  11. 16 2月, 2016 1 次提交
  12. 12 2月, 2016 2 次提交
  13. 11 2月, 2016 3 次提交
    • R
      fix return value for fread/fwrite when size argument is 0 · 500c6886
      Rich Felker 提交于
      when the size argument was zero but nmemb was nonzero, these functions
      were returning nmemb, despite no data having been written.
      conceptually this is not wrong, but the standard requires a return
      value of zero in this case.
      500c6886
    • R
      fix line-buffered flush omission for odd usage of putc-family functions · 416d1c7a
      Rich Felker 提交于
      as specified, the int argument providing the character to write is
      converted to type unsigned char. for the actual write to buffer,
      conversion happened implicitly via the assignment operator; however,
      the logic to check whether the argument was a newline used the
      original int value. thus usage such as putchar('\n'+0x100) failed to
      produce a flush.
      416d1c7a
    • R
      fix failed write reporting by fwrite in line-buffered mode · 5a6e8d09
      Rich Felker 提交于
      when a write error occurred while flushing output due to a newline,
      fwrite falsely reported all bytes up to and including the newline as
      successfully written. in general, due to buffering such "spurious
      success" returns are acceptable for stdio; however for line-buffered
      mode it was subtly wrong. errors were still visible via ferror() or as
      a short-write return if there was more data past the newline that
      should have been written, but since the contract for line-buffered
      mode is that everything up through the newline be written out
      immediately, a discrepency was observable in the actual file contents.
      5a6e8d09
  14. 09 2月, 2016 1 次提交
    • R
      remove workaround for broken mips assemblers · 869a9df5
      Rich Felker 提交于
      the workaround was for a bug that botched .gpword references to local
      labels, applying a nonsensical random offset of -0x4000 to them.
      
      this reverses commit 5e396fb9 and a
      removes a similar hack that was added to syscall_cp.s in the later
      commit 756c8af8. it turns out one
      additional instance of the same idiom, the GETFUNCSYM macro in
      arch/mips/reloc.h, was still affected by the assembler bug and does
      not admit an easy workaround without making assumptions about how the
      macro is used. the previous workarounds made static linking work but
      left the early-stage dynamic linker broken and thus had limited
      usefulness.
      
      instead, affected users (using binutils versions older than 2.20) will
      need to fix the bug on the binutils side; the trivial patch is commit
      453f5985b13e35161984bf1bf657bbab11515aa4 in the binutils-gdb
      repository.
      869a9df5
  15. 05 2月, 2016 2 次提交
    • R
      in mips cancellable syscall asm, don't assume gp register is valid · 756c8af8
      Rich Felker 提交于
      the old __cp_cancel code path loaded the address of __cancel from the
      GOT using the $gp register, which happened to be set to point to the
      correct GOT by the calling C function, but there is no ABI requirement
      that this happen. instead, go the roundabout way and compute the
      address of __cancel via pc-relative and gp-relative addressing
      starting with a fake return address generated by a bal instruction,
      which is the same trick crt1 uses to bootstrap.
      756c8af8
    • R
      avoid using signals when a thread attempts to cancel itself · aecda353
      Rich Felker 提交于
      not only is pthread_kill expensive in this case; it also breaks
      testing under qemu app-level emulation.
      aecda353
  16. 03 2月, 2016 2 次提交
    • R
      make configure accept -h as an alias for --help · 47314f1e
      Rich Felker 提交于
      47314f1e
    • R
      update INSTALL file with new archs, compiler info · 40891ae6
      Rich Felker 提交于
      add aarch64 and or1k archs, upgrade sh from experimental, and note
      that sh now supports the FDPIC ABI.
      
      the old advice on compiler versions was outdated and more specific
      than made sense. presence of compiler bugs varies a lot by arch, so
      it's hard to make any good recommendations beyond "recent". if we want
      to document specific known-good/bad compiler versions, a much larger
      section in the documentation than what's appropriate for the INSTALL
      file would be needed.
      40891ae6
  17. 01 2月, 2016 3 次提交
    • S
      fix malloc_usable_size for NULL input · d1507646
      Szabolcs Nagy 提交于
      the linux man page specifies malloc_usable_size(0) to return 0 and
      this is the semantics other implementations follow (jemalloc).
      reported by Alexander Monakov.
      d1507646
    • S
      regex: increase the stack tre uses for tnfa creation · 2810b30f
      Szabolcs Nagy 提交于
      10k elements stack is increased to 1000k, otherwise tnfa creation fails
      for reasonable sized patterns: a single literal char can add 7 elements
      to this stack, so regcomp of an 1500 char long pattern (with only litral
      chars) fails with REG_ESPACE. (the new limit allows about < 150k chars,
      this arbitrary limit allows most command line regex usage.)
      
      ideally there would be no upper bound: regcomp dynamically reallocates
      this buffer, every reallocation checks for allocation failure and at
      the end this stack is freed so there is no reason for special bound.
      however that may have unwanted effect on regcomp and regexec runtime
      so this is a conservative change.
      2810b30f
    • S
      better a_sc inline asm constraint on aarch64 and arm · 3b277253
      Szabolcs Nagy 提交于
      "Q" input constraint was used for the written object, instead of "=Q"
      output constraint.  this should not cause problems because "memory"
      is on the clobber list, but "=Q" better documents the intent and more
      consistent with the actual asm code.
      
      this changes the generated code, because different registers are used,
      but other than the register names nothing should change.
      3b277253
  18. 31 1月, 2016 2 次提交