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2012-07-23add ioperm/iopl syscallsRich Felker3-0/+31
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...
2012-07-23add splice and vmsplice syscallsRich Felker3-0/+28
based on patches by orc and Isaac Dunham.
2012-07-23add extended attributes syscallsRich Felker2-0/+74
based on patch by orc and Isaac Dunham, with some fixes.
2012-07-23add pipe2 syscallRich Felker2-0/+9
based on patch by orc and Isaac Dunham, with some details fixed.
2012-07-22remove scanf dependency from getaddrinfo /etc/services supportRich Felker1-5/+4
2012-07-22getaddrinfo /etc/services lookup supportRich Felker1-3/+16
2012-07-22fix namespace issue in prototypes in math.hRich Felker1-2/+2
2012-07-22fix wrong size for sigjmp_buf signal set arrayRich Felker1-1/+1
128 is the size in bytes, not longs.
2012-07-22add floating point register saving/restoring to mips setjmp/longjmpRich Felker3-2/+30
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.
2012-07-22make getservby*_r return error code rather than -1 (and using errno)Rich Felker2-19/+35
untested but should be correct..
2012-07-21fix logic error for skipping failed interfaces in if_nameindexRich Felker1-8/+7
2012-07-19fix typo in aio.hRich Felker1-1/+1
2012-07-14fix getservby*() with null pointer for protocol argumentRich Felker2-0/+8
not sure this is the best fix but it should work
2012-07-14avoid blx instruction which does not exist on armv4t or armv4Rich Felker1-1/+2
2012-07-13make dynamic linker tell the debugger its own pathnameRich Felker1-0/+5
use the main program's PT_INTERP header if possible, since this is sure to be a correct (and hopefully absolute) pathname.
2012-07-12fix broken mips a_fetch_addRich Felker1-7/+7
sc was overwriting the result
2012-07-12sigsetjmp asm for mipsRich Felker1-0/+27
2012-07-12mipsel (little endian) supportRich Felker1-1/+1
the fields in the mcontext_t are long long (for no good reason) even on 32-bit mips, so the offset of the instruction pointer (as a word) varies depending on endianness.
2012-07-12workaround another sendmsg kernel bug on 64-bit machinesRich Felker6-7/+42
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.
2012-07-12fix redef of sigprocmask constants on mipsRich Felker2-2/+3
this fix is easier than trying to reorder the header stuff
2012-07-12disable dynamic linking on mips for now (broken)Rich Felker1-0/+5
2012-07-12more mips bits-header fixesRich Felker2-2/+8
signal handling was very broken because of this
2012-07-12fix mips syscalls with long long argsRich Felker1-1/+1
like arm, mips requires 64-bit arguments to be "aligned" on an even register boundary.
2012-07-12fix several locks that weren't updated right for new futex-based __lockRich Felker4-10/+10
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.
2012-07-12fix pthread_kill unlockingRich Felker1-1/+1
it had not been updated for the futex-based locks
2012-07-12fix breakage of x86_64 sigaction from recent changes for mipsRich Felker1-1/+1
2012-07-12fix mips mcontext_t structure sizeRich Felker1-1/+5
otherwise offs in ucontext_t will be wrong, and break code that inspects or modifies the signal makes (including cancellation code).
2012-07-11fix potential race condition in detached threadsRich Felker2-4/+10
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.
2012-07-11mips clone: don't free stack space used to copy argRich Felker1-1/+0
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...
2012-07-11fix mips clone() on real linux kernelRich Felker1-4/+7
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.
2012-07-11fix MAP_ANONYMOUS value for mips, remove cruft copied from i386Rich Felker1-2/+1
2012-07-11fix clone() on mips (args were in wrong order)Rich Felker1-3/+2
with this change, threads on mips seem to be working
2012-07-11first attempt at making threads work on mipsRich Felker3-0/+67
2012-07-11generic c version of __set_thread_area for archs where it worksRich Felker1-1/+5
on other archs, like x86[_64], asm version is required
2012-07-11initial version of mips (o32) port, based on work by Richard Pennington (rdp)Rich Felker38-0/+2196
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.
2012-07-11remove unused var in new sigaction codeRich Felker1-1/+1
2012-07-11use unsigned bitmask for consistency in ksigactionRich Felker1-1/+1
the type doesn't actually matter, just the size, but it's nice to be consistent...
2012-07-11fix breakage from last commit: forgot to include ksigaction.hRich Felker1-0/+6
this file can be overridden by a same-named file in an arch dir.
2012-07-11changes to kernel sigaction struct handling in preparation for mips portRich Felker3-15/+18
2012-07-11make dynamic linker depend on -DSHARED not -fPICRich Felker1-1/+1
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.
2012-07-11fix lots of breakage on dlopen, mostly with explicit pathnamesRich Felker1-14/+21
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.
2012-07-10support -mfpmath=387 on x86_64Rich Felker1-0/+4
apparently somebody wants this for something... and it doesn't hurt.
2012-07-10fix wrong value of FLT_EVAL_METHOD for x86_64Rich Felker1-1/+1
2012-07-08make arm syscalls (still non-inline) more efficientRich Felker1-6/+6
no need to pass zero for unused arguments; just omit them.
2012-07-08remove little-endian assumption from arm atomic.hRich Felker1-4/+6
this hidden endian dependency had left big endian arm badly broken.
2012-07-07fix dlsym RTLD_NEXT supportRich Felker1-1/+3
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.
2012-07-04putw is supposed to return 0 (not the value written) on successRich Felker1-1/+1
this is not a standard but it's the traditional behavior and it's more useful because the caller can reliably detect errors.
2012-07-04make sure getw/putw agree with prototypes by defining _GNU_SOURCERich Felker2-0/+2
2012-07-04add prototypes for getw/putwRich Felker1-0/+2
2012-07-03configure: only use -ffloat-store on i386Rich Felker1-1/+1
this option is expensive and only used on old gcc's that lack -fexcess-precision=standed, but it's not needed on non-i386 archs where floating point does not have excess precision anyway. if musl ever supports m68k, i think it will need to be special-cased too. i'm not aware of any other archs with excess precision.
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