| Commit message (Expand) | Author | Age | Files | Lines |
|---|
| * | add missing xattr functions•••not sure why these were originally omitted..
| Rich Felker | 2012-08-15 | 1 | -0/+15 |
| * | Merge remote-tracking branch 'nsz/exp' | Rich Felker | 2012-08-13 | 2 | -40/+35 |
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| | * | math: fix exp.s on i386 and x86_64 so the exception flags are correct•••exp(inf), exp(-inf), exp(nan) used to raise wrong flags
| nsz | 2012-08-08 | 2 | -40/+35 |
| * | | remove significandl•••this function never existed historically; since the float/double
functions it's based on are nonstandard and deprecated, there's really
no justification for its existence except that glibc has it. it can be
added back if there's ever really a need...
| Rich Felker | 2012-08-13 | 1 | -7/+0 |
| * | | add significand[fl] math functions | Rich Felker | 2012-08-13 | 3 | -0/+21 |
| * | | memcpy asm for i386 and x86_64 | Rich Felker | 2012-08-11 | 2 | -0/+51 |
| * | | remove unused but buggy code from strstr.c | Rich Felker | 2012-08-11 | 1 | -10/+0 |
| * | | remove buggy short-string wcsstr implementation; always use twoway•••since this interface is rarely used, it's probably best to lean
towards keeping code size down anyway. one-character needles will
still be found immediately by the initial wcschr call anyway.
| Rich Felker | 2012-08-11 | 1 | -9/+0 |
| * | | add bsd fgetln function•••optimized to avoid allocation and return lines directly out of the
stream buffer whenever possible.
| Rich Felker | 2012-08-11 | 3 | -1/+21 |
| * | | minor but worthwhile optimization in printf: avoid expensive strspn•••the strspn call was made for every format specifier and end-of-string,
even though the expected return value was 1-2 for normal usage.
replace with simple loop.
| Rich Felker | 2012-08-10 | 1 | -4/+2 |
| * | | trivial optimization to printf: avoid wasted call frame•••amusingly, this cuts more than 10% off the run time of printf("a"); on
the machine i tested it on.
sadly the same optimization is not possible for snprintf without
duplicating all the pseudo-FILE setup code, which is not worth it.
| Rich Felker | 2012-08-10 | 1 | -1/+1 |
| * | | add blowfish hash support to crypt•••there are still some discussions going on about tweaking the code, but
at least thing brings us to the point of having something working in
the repository. hopefully the remaining major hashes (md5,sha) will
follow soon.
| Rich Felker | 2012-08-10 | 3 | -8/+806 |
| * | | fix (hopefully) all hard-coded 8's for kernel sigset_t size•••some minor changes to how hard-coded sets for thread-related purposes
are handled were also needed, since the old object sizes were not
necessarily sufficient. things have gotten a bit ugly in this area,
and i think a cleanup is in order at some point, but for now the goal
is just to get the code working on all supported archs including mips,
which was badly broken by linux rejecting syscalls with the wrong
sigset_t size.
| Rich Felker | 2012-08-09 | 14 | -20/+31 |
| * | | make crypt return an unmatchable hash rather than NULL on failure•••unfortunately, a large portion of programs which call crypt are not
prepared for its failure and do not check that the return value is
non-null before using it. thus, always "succeeding" but giving an
unmatchable hash is reportedly a better behavior than failing on
error.
it was suggested that we could do this the same way as other
implementations and put the null-to-unmatchable translation in the
wrapper rather than the individual crypt modules like crypt_des, but
when i tried to do it, i found it was making the logic in __crypt_r
for keeping track of which hash type we're working with and whether it
succeeded or failed much more complex, and potentially error-prone.
the way i'm doing it now seems to have essentially zero cost, anyway.
| Rich Felker | 2012-08-09 | 1 | -5/+2 |
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| * | fix bug dlsym bug that slipped in during dynamic linker cleanup | Rich Felker | 2012-08-07 | 1 | -1/+1 |
| * | dlsym RTLD_NEXT support for mips•••untested
| Rich Felker | 2012-08-05 | 1 | -0/+15 |
| * | more changes that were lost when committing mips dynamic linker | Rich Felker | 2012-08-05 | 1 | -0/+4 |
| * | fix change lost in the process of integrating mips dynamic linker | Rich Felker | 2012-08-05 | 1 | -2/+2 |
| * | mips dynamic linker support•••not heavily tested, but the basics are working. the basic concept is
that the dynamic linker entry point code invokes a pure-PIC (no global
accesses) C function in reloc.h to perform the early GOT relocations
needed to make the dynamic linker itself functional, then invokes
__dynlink like on other archs. since mips uses some ugly arch-specific
hacks to optimize relocating the GOT (rather than just using the
normal DT_REL[A] tables like on other archs), the dynamic linker has
been modified slightly to support calling arch-specific relocation
code in reloc.h.
most of the actual mips-specific behavior was developed by reading the
output of readelf on libc.so and simple executable files. i could not
find good reference information on which relocation types need to be
supported or their semantics, so it's possible that some legitimate
usage cases will not work yet.
| Rich Felker | 2012-08-05 | 2 | -0/+49 |
| * | more cleanup of dynamic linker internals | Rich Felker | 2012-08-05 | 1 | -8/+9 |
| * | more dynamic linker internals cleanup•••changing the string printed for the dso name is not a regression; the
old code was simply using the wrong dso name (head rather than the dso
currently being relocated). this will be fixed in a later commit.
| Rich Felker | 2012-08-05 | 1 | -6/+6 |
| * | dynamic linker internals cleanup | Rich Felker | 2012-08-05 | 1 | -5/+7 |
| * | floating point support for arm setjmp/longjmp•••not heavily tested, but at least they don't seem to break anything on
soft float targets with or without coprocessors. they check the auxv
AT_HWCAP flags to determine which coprocessor, if any, is available.
| Rich Felker | 2012-08-05 | 2 | -2/+54 |
| * | fix argument type error on wcwidth function•••since the correct declaration was not visible, and since the
representation of the types wchar_t and wint_t always match, a
compiler would have to go out of its way to make this bug manifest,
but better to fix it anyway.
| Rich Felker | 2012-08-02 | 1 | -2/+2 |
| * | fix missing static in getusershell (namespace pollution) | Rich Felker | 2012-08-02 | 1 | -1/+1 |
| * | optimize mempcpy to minimize need for data saved across the call | Rich Felker | 2012-07-31 | 1 | -2/+1 |
| * | optimize arm setjmp/longjmp register saving/loading•••the original code was wrongly based on how it would be done in thumb
mode, but that's not needed because musl's asm only targets arm.
| Rich Felker | 2012-07-27 | 2 | -6/+2 |
| * | save AT_HWCAP from auxv for subsequent use in machine-specific code•••it's expected that this will be needed/useful only in asm, so I've
given it its own symbol that can be addressed in pc-relative ways from
asm rather than adding a field in the __libc structure which would
require hard-coding the offset wherever it's used.
| Rich Felker | 2012-07-27 | 3 | -0/+4 |
| * | retry on cas failures in sem_trywait•••this seems counter-intuitive since sem_trywait is supposed to just try
once, not wait for the semaphore. however, the retry loop is not a
wait. instead, it's to handle the case where the value changes due to
a simultaneous post or wait from another thread while the semaphore
value remains positive. in such a case, it's absolutely wrong for
sem_trywait to fail with EAGAIN because the semaphore is not busy.
| Rich Felker | 2012-07-24 | 1 | -2/+2 |
| * | add ioperm/iopl syscalls•••based on patches by orc and Isaac Dunham, with some fixes. sys/io.h
exists and contains prototypes for these functions regardless of
whether the target arch has them; this is a bit unorthodox but I don't
think it will break anything. the function definitions do not exist
unless the appropriate SYS_* syscall number macro is defined, which
should make sure configure scripts looking for these functions don't
find them on other systems.
presently, sys/io.h does not have the inb/outb/etc. port io
macros/functions. I'd be surprised if ioperm/iopl are useful without
them, so they probably need to be added at some point in appropriate
bits/io.h files...
| Rich Felker | 2012-07-23 | 2 | -0/+18 |
| * | add splice and vmsplice syscalls•••based on patches by orc and Isaac Dunham.
| Rich Felker | 2012-07-23 | 2 | -0/+16 |
| * | add extended attributes syscalls•••based on patch by orc and Isaac Dunham, with some fixes.
| Rich Felker | 2012-07-23 | 1 | -0/+47 |
| * | add pipe2 syscall•••based on patch by orc and Isaac Dunham, with some details fixed.
| Rich Felker | 2012-07-23 | 1 | -0/+8 |
| * | remove scanf dependency from getaddrinfo /etc/services support | Rich Felker | 2012-07-22 | 1 | -5/+4 |
| * | getaddrinfo /etc/services lookup support | Rich Felker | 2012-07-22 | 1 | -3/+16 |
| * | add floating point register saving/restoring to mips setjmp/longjmp•••also fix the alignment of jmp_buf to meet the abi. linux always
emulates fpu on mips if it's not present, so enabling this code
unconditionally is "safe" but may be slow. in the long term it may be
preferable to find a way to disable it on soft float builds.
| Rich Felker | 2012-07-22 | 2 | -1/+29 |
| * | make getservby*_r return error code rather than -1 (and using errno)•••untested but should be correct..
| Rich Felker | 2012-07-22 | 2 | -19/+35 |
| * | fix logic error for skipping failed interfaces in if_nameindex | Rich Felker | 2012-07-21 | 1 | -8/+7 |
| * | fix getservby*() with null pointer for protocol argument•••not sure this is the best fix but it should work
| Rich Felker | 2012-07-14 | 2 | -0/+8 |
| * | avoid blx instruction which does not exist on armv4t or armv4 | Rich Felker | 2012-07-14 | 1 | -1/+2 |
| * | make dynamic linker tell the debugger its own pathname•••use the main program's PT_INTERP header if possible, since this is
sure to be a correct (and hopefully absolute) pathname.
| Rich Felker | 2012-07-13 | 1 | -0/+5 |
| * | sigsetjmp asm for mips | Rich Felker | 2012-07-12 | 1 | -0/+27 |
| * | workaround another sendmsg kernel bug on 64-bit machines•••the kernel wrongly expects the cmsg length field to be size_t instead
of socklen_t. in order to work around the issue, we have to impose a
length limit and copy to a local buffer. the length limit should be
more than sufficient for any real-world use; these headers are only
used for passing file descriptors and permissions between processes
over unix sockets.
| Rich Felker | 2012-07-12 | 1 | -0/+13 |
| * | fix several locks that weren't updated right for new futex-based __lock•••these could have caused memory corruption due to invalid accesses to
the next field. all should be fixed now; I found the errors with fgrep
-r '__lock(&', which is bogus since the argument should be an array.
| Rich Felker | 2012-07-12 | 4 | -10/+10 |
| * | fix pthread_kill unlocking•••it had not been updated for the futex-based locks
| Rich Felker | 2012-07-12 | 1 | -1/+1 |
| * | fix breakage of x86_64 sigaction from recent changes for mips | Rich Felker | 2012-07-12 | 1 | -1/+1 |
| * | fix potential race condition in detached threads•••after the thread unmaps its own stack/thread structure, the kernel,
performing child tid clear and futex wake, could clobber a new mapping
made at the same location as the just-removed thread's tid field.
disable kernel clearing of child tid to prevent this.
| Rich Felker | 2012-07-11 | 2 | -4/+10 |
| * | mips clone: don't free stack space used to copy arg•••the mips abi reserves stack space equal to the size of the in-register
args for the callee to save the args, if desired. this would cause the
beginning of the thread structure to be clobbered...
| Rich Felker | 2012-07-11 | 1 | -1/+0 |
| * | fix mips clone() on real linux kernel•••the old code worked in qemu app-level emulation, but not on real
kernels where the clone syscall does not copy the register values to
the new thread. save arguments on the new thread stack instead.
| Rich Felker | 2012-07-11 | 1 | -4/+7 |
| * | fix clone() on mips (args were in wrong order)•••with this change, threads on mips seem to be working
| Rich Felker | 2012-07-11 | 1 | -3/+2 |
