| Commit message (Expand) | Author | Age | Files | Lines |
|---|
| * | 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 |
| * | first attempt at making threads work on mips | Rich Felker | 2012-07-11 | 3 | -0/+67 |
| * | generic c version of __set_thread_area for archs where it works•••on other archs, like x86[_64], asm version is required
| Rich Felker | 2012-07-11 | 1 | -1/+5 |
| * | initial version of mips (o32) port, based on work by Richard Pennington (rdp)•••basically, this version of the code was obtained by starting with
rdp's work from his ellcc source tree, adapting it to musl's build
system and coding style, auditing the bits headers for discrepencies
with kernel definitions or glibc/LSB ABI or large file issues, fixing
up incompatibility with the old binutils from aboriginal linux, and
adding some new special cases to deal with the oddities of sigaction
and pipe syscall interfaces on mips.
at present, minimal test programs work, but some interfaces are broken
or missing. threaded programs probably will not link.
| Rich Felker | 2012-07-11 | 5 | -0/+105 |
| * | remove unused var in new sigaction code | Rich Felker | 2012-07-11 | 1 | -1/+1 |
| * | use unsigned bitmask for consistency in ksigaction•••the type doesn't actually matter, just the size, but it's nice to be
consistent...
| Rich Felker | 2012-07-11 | 1 | -1/+1 |
| * | fix breakage from last commit: forgot to include ksigaction.h•••this file can be overridden by a same-named file in an arch dir.
| Rich Felker | 2012-07-11 | 1 | -0/+6 |
| * | changes to kernel sigaction struct handling in preparation for mips port | Rich Felker | 2012-07-11 | 2 | -14/+17 |
| * | make dynamic linker depend on -DSHARED not -fPIC•••if libc.a is compiled PIC for use in static PIE code, this should not
cause the dynamic linker (which still does not support static-linked
main program) to be built into libc.a.
| Rich Felker | 2012-07-11 | 1 | -1/+1 |
| * | fix lots of breakage on dlopen, mostly with explicit pathnames•••most importantly, the name for such libs was being set from an
uninitialized buffer. also, shortname always had an initial '/'
character, making it useless for looking up already-loaded libraries
by name, and thus causing repeated searches through the library path.
major changes now:
- shortname is the base name for library lookups with no explicit
pathname. it's initially clear for libraries loaded with an explicit
pathname (and for the main program), but will be set if the same
library (detected via inodes match) is later found by a search.
- exact name match is never used to identify libraries loaded with an
explicit pathname. in this case, there's no explicit search, so we
can just stat the file and check for inode match.
| Rich Felker | 2012-07-11 | 1 | -14/+21 |
| * | fix dlsym RTLD_NEXT support•••previously this was being handled the same as a library-specific,
dependency-order lookup on the next library in the global chain, which
is likely to be utterly meaningless. instead the lookup needs to be in
the global namespace, but omitting the initial portion of the global
library chain up through the calling library.
| Rich Felker | 2012-07-07 | 1 | -1/+3 |
| * | putw is supposed to return 0 (not the value written) on success•••this is not a standard but it's the traditional behavior and it's more
useful because the caller can reliably detect errors.
| Rich Felker | 2012-07-04 | 1 | -1/+1 |
| * | make sure getw/putw agree with prototypes by defining _GNU_SOURCE | Rich Felker | 2012-07-04 | 2 | -0/+2 |
| * | jmp_buf overhaul fixing several issues•••on arm, the location of the saved-signal-mask flag and mask were off
by one between sigsetjmp and siglongjmp, causing incorrect behavior
restoring the signal mask. this is because the siglongjmp code assumed
an extra slot was in the non-sig jmp_buf for the flag, but arm did not
have this. now, the extra slot is removed for all archs since it was
useless.
also, arm eabi requires jmp_buf to have 8-byte alignment. we achieve
that using long long as the type rather than with non-portable gcc
attribute tags.
| Rich Felker | 2012-07-03 | 2 | -10/+7 |
| * | fix sigsetjmp on arm (needs asm)•••no idea why gcc refuses to compile the C code to use a tail call, but
it's best to use asm anyway so we don't have to rely on the quality of
the compiler's optimizations for correct code.
| Rich Felker | 2012-07-02 | 1 | -0/+13 |
