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2012-11-17add cleaned-up sys/mtio.hRich Felker1-0/+188
this is mostly junk, but a few programs with tape-drive support unconditionally include it, and it might be useful.
2012-11-17add stub versions of some missing optional pthread interfacesRich Felker6-0/+35
priority inheritance is not yet supported, and priority protection probably will not be supported ever unless there's serious demand for it (it's a fairly heavy-weight feature). per-thread cpu clocks would be nice to have, but to my knowledge linux is still not capable of supporting them. glibc fakes them by using the _process_ cpu-time clock and subtracting the thread creation time, which gives seriously incorrect semantics (worse than not supporting the feature at all), so until there's a way to do it right, it will remain as a stub that always fails.
2012-11-17arg-skipping code for powerpc dynamic linkerRich Felker1-0/+8
this allows using the dynamic linker as a command to load programs.
2012-11-16dynamic linking support for powerpcRich Felker2-25/+43
incomplete but at least partly working. requires all files to be compiled in the new "secure" plt model, not the old one that put plt code in the data segment. TLS is untested but may work. invoking the dynamic linker explicitly to load a program does not yet handle argv correctly.
2012-11-16fix ppc stat structure definitionRich Felker1-4/+3
2012-11-16fix powerpc termios.h and ioctl.hrofl0r2-192/+232
2012-11-15disable SO_REUSEPORT in sys/socket.hRich Felker2-2/+2
although a number is reserved for it, this option is not implemented on Linux and does not work. defining it causes some applications to use it, and subsequently break due to its failure.
2012-11-15ppc wchar_t is long, not intRich Felker1-1/+1
2012-11-15Merge remote-tracking branch 'nsz/math'Rich Felker87-372/+339
2012-11-14update copyright file for recent contributionsRich Felker1-5/+9
2012-11-14fix indention with spaces in powerpc asmRich Felker7-55/+54
2012-11-14fix powerpc atomic compare-and-swap functionRich Felker1-6/+7
previous version did not compare at all; it was just a fancy atomic write. untested. further atomic fixes may be needed.
2012-11-14update ppc atomic code to match the endian-agnostic version on other archsRich Felker1-14/+6
2012-11-14fix wchar limits mistakenly copied from armRich Felker1-2/+2
2012-11-14Merge remote-tracking branch 'ppc-port/ppc-squashed'Rich Felker42-0/+2402
2012-11-14fenv: return FE_TONEAREST in dummy fegetroundSzabolcs Nagy1-1/+1
2012-11-14math: ld80 invtrig cleanupsSzabolcs Nagy8-110/+87
keeping only commonly used data in invtrigl
2012-11-13math: simplify hypot and hypotf using scalbnSzabolcs Nagy2-11/+4
this also fixes overflow/underflow raising and excess precision issues (as those are handled well in scalbn)
2012-11-13math: turn off the STRICT_ASSIGN workaround by defaultSzabolcs Nagy1-5/+3
the volatile hack in STRICT_ASSIGN is only needed if assignment is not respected and excess precision is kept. gcc -fexcess-precision=standard and -ffloat-store both respect assignment and musl use these flags by default. i kept the macro for now so the workaround may be used for bad compilers in the future.
2012-11-13PPC port cleaned up, static linking works well now.rofl0r55-1095/+1373
2012-11-13import preliminary ppc work by rdp.Richard Pennington38-0/+2124
2012-11-13math: use '#pragma STDC FENV_ACCESS ON' when fenv is accessedSzabolcs Nagy10-0/+11
2012-11-13math: excess precision fix modf, modff, scalbn, scalbnfSzabolcs Nagy4-22/+18
old code was correct only if the result was stored (without the excess precision) or musl was compiled with -ffloat-store. now we use STRICT_ASSIGN to work around the issue. (see note 160 in c11 section 6.8.6.4)
2012-11-13math: fix scalbn and scalbnf on overflow/underflowSzabolcs Nagy2-10/+24
old code was correct only if the result was stored (without the excess precision) or musl was compiled with -ffloat-store. (see note 160 in n1570.pdf section 6.8.6.4)
2012-11-13math: fix nextafter and nexttoward on maxdbl and maxflt inputSzabolcs Nagy4-4/+4
old code (return x+x;) returns correct value and raises correct flags only if the result is stored as double (or float)
2012-11-13complex: add C11 CMPLX macros and replace cpack with themSzabolcs Nagy47-156/+152
2012-11-13math: raise flags in logl.c on <= 0 argumentsSzabolcs Nagy2-9/+3
2012-11-13math: fix logb*.c exceptions now that ilogb raises invalidSzabolcs Nagy3-25/+17
2012-11-13math: raise flags in log2l.c on <= 0 arguments, and fix volatileSzabolcs Nagy1-8/+3
2012-11-13math: raise exception flags in log1pl.c on <= -1 argumentsSzabolcs Nagy1-7/+2
2012-11-12math: raise invalid flag in ilogb*.c on +-0, +-inf and nanSzabolcs Nagy3-6/+18
2012-11-12math: fix exception behaviour of expm1l.c on inf and nanSzabolcs Nagy1-13/+7
2012-11-12math: fix long double constants in exp10l.cSzabolcs Nagy1-2/+2
2012-11-11debloat src/thread tree but putting lots of junk in one fileRich Felker16-108/+93
POSIX includes mostly-useless attribute-get functions for each attribute-set function, presumably out of some object-oriented dogmatism. the get functions are not useful with the simple idiomatic usage of attributes. there are of course possible valid uses of them (like writing wrappers for pthread init functions that perform special actions on the presence of certain attributes), but considering how tiny these functions are anyway, little is lost by putting them all in one file, and some build-time cost and archive-file-size benefits are achieved.
2012-11-11report support of TPS option in unistd.h and sysconfRich Felker2-2/+3
also update another newish feature in sysconf, stackaddr
2012-11-11add support for thread scheduling (POSIX TPS option)Rich Felker23-13/+159
linux's sched_* syscalls actually implement the TPS (thread scheduling) functionality, not the PS (process scheduling) functionality which the sched_* functions are supposed to have. omitting support for the PS option (and having the sched_* interfaces fail with ENOSYS rather than omitting them, since some broken software assumes they exist) seems to be the only conforming way to do this on linux.
2012-11-11fix clobber of edx in i386 vsyscall asmRich Felker1-1/+2
this function does not obey the normal calling convention; like a syscall instruction, it's expected not to clobber any registers except the return value. clobbering edx could break callers that were reusing the value cached in edx after the syscall returns.
2012-11-09always add memory streams to stdio open file listRich Felker3-18/+21
per interpretation for austin group issue #626, fflush(0) and exit() must block waiting for a lock if another thread has locked a memory stream with flockfile. this adds some otherwise-unnecessary synchronization cost to use of memory streams, but there was already a synchronization cost calling malloc anyway. previously the stream was only added to the open file list in single-threaded programs, so that upon subsequent call to pthread_create, locking could be turned on for the stream.
2012-11-09support ldso path files without final newlineRich Felker1-2/+5
2012-11-08change ldso path file logic to replace rather than add to search pathRich Felker1-2/+2
this change was originally intended just to avoid repeated attempts to open a nonexistant /etc/ls-musl-$(ARCH).path file, but I realized it also prevents the default paths from being searched when such a path file exists. despite the potential to break existing usage, I believe the new behavior is the right behavior, and it's better to fix it sooner rather than later. with the old behavior, it was impossible to inhibit search of default paths which might contain musl-incompatible libs (or even libs from a different cpu arch, on multi-arch machines).
2012-11-08fix "configure --prefix=" and improve path/arg handling in configureRich Felker1-16/+12
previously, empty string was treated as "use default". this is apparently not compatible with standard configure semantics where an empty prefix puts everything under /. the new logic should be a lot cleaner and not suffer from such issues.
2012-11-08clean up sloppy nested inclusion from pthread_impl.hRich Felker21-16/+28
this mirrors the stdio_impl.h cleanup. one header which is not strictly needed, errno.h, is left in pthread_impl.h, because since pthread functions return their error codes rather than using errno, nearly every single pthread function needs the errno constants. in a few places, rather than bringing in string.h to use memset, the memset was replaced by direct assignment. this seems to generate much better code anyway, and makes many functions which were previously non-leaf functions into leaf functions (possibly eliminating a great deal of bloat on some platforms where non-leaf functions require ugly prologue and/or epilogue).
2012-11-08clean up stdio_impl.hRich Felker41-19/+93
this header evolved to facilitate the extremely lazy practice of omitting explicit includes of the necessary headers in individual stdio source files; not only was this sloppy, but it also increased build time. now, stdio_impl.h is only including the headers it needs for its own use; any further headers needed by source files are included directly where needed.
2012-11-08fix dlsym asm for mipsRich Felker1-1/+2
saving the return address from the delay slot is not valid -- by the time the instruction executes, the return address has already been replaced.
2012-11-05improve SOCK_NONBLOCK/SOCK_CLOEXEC fallback codeRich Felker1-1/+2
checking for EINVAL should be sufficient, but qemu user emulation returns EPROTONOSUPPORT in some of the failure cases, and it seems conceivable that other kernels doing linux-emulation could make the same mistake. since DNS lookups and other important code might break if the fallback does not get invoked, be extra careful and check for either error. note that it's important NOT to perform the fallback code on other errors such as resource-exhaustion cases, since the fallback is not atomic and will lead to file-descriptor leaks in multi-threaded programs that use exec. the fallback code is only "safe" to run when the initial failure is caused by the application's choice of arguments, not the system state.
2012-11-05fix numerous mips abi constant definition mismatchesRich Felker4-89/+127
2012-11-04mips cache flush/ctl syscall support and headerRich Felker2-0/+40
2012-11-01remove one unnecessary static var from dynamic linkerRich Felker1-2/+2
2012-11-01fix more unused variable warningsRich Felker4-6/+5
some of these were coming from stdio functions locking files without unlocking them. I believe it's useful for this to throw a warning, so I added a new macro that's self-documenting that the file will never be unlocked to avoid the warning in the few places where it's wrong.
2012-11-01fix unused variable warningsRich Felker2-2/+1
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