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2012-11-14update copyright file for recent contributionsRich Felker-5/+9
2012-11-14fix indention with spaces in powerpc asmRich Felker-55/+54
2012-11-14fix powerpc atomic compare-and-swap functionRich Felker-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 Felker-14/+6
2012-11-14fix wchar limits mistakenly copied from armRich Felker-2/+2
2012-11-14Merge remote-tracking branch 'ppc-port/ppc-squashed'Rich Felker-0/+2402
2012-11-14fenv: return FE_TONEAREST in dummy fegetroundSzabolcs Nagy-1/+1
2012-11-14math: ld80 invtrig cleanupsSzabolcs Nagy-110/+87
keeping only commonly used data in invtrigl
2012-11-13math: simplify hypot and hypotf using scalbnSzabolcs Nagy-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 Nagy-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.rofl0r-1095/+1373
2012-11-13import preliminary ppc work by rdp.Richard Pennington-0/+2124
2012-11-13math: use '#pragma STDC FENV_ACCESS ON' when fenv is accessedSzabolcs Nagy-0/+11
2012-11-13math: excess precision fix modf, modff, scalbn, scalbnfSzabolcs Nagy-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 Nagy-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 Nagy-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 Nagy-156/+152
2012-11-13math: raise flags in logl.c on <= 0 argumentsSzabolcs Nagy-9/+3
2012-11-13math: fix logb*.c exceptions now that ilogb raises invalidSzabolcs Nagy-25/+17
2012-11-13math: raise flags in log2l.c on <= 0 arguments, and fix volatileSzabolcs Nagy-8/+3
2012-11-13math: raise exception flags in log1pl.c on <= -1 argumentsSzabolcs Nagy-7/+2
2012-11-12math: raise invalid flag in ilogb*.c on +-0, +-inf and nanSzabolcs Nagy-6/+18
2012-11-12math: fix exception behaviour of expm1l.c on inf and nanSzabolcs Nagy-13/+7
2012-11-12math: fix long double constants in exp10l.cSzabolcs Nagy-2/+2
2012-11-11debloat src/thread tree but putting lots of junk in one fileRich Felker-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 Felker-2/+3
also update another newish feature in sysconf, stackaddr
2012-11-11add support for thread scheduling (POSIX TPS option)Rich Felker-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 Felker-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 Felker-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 Felker-2/+5
2012-11-08change ldso path file logic to replace rather than add to search pathRich Felker-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 Felker-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 Felker-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 Felker-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 Felker-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 Felker-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 Felker-89/+127
2012-11-04mips cache flush/ctl syscall support and headerRich Felker-0/+40
2012-11-01remove one unnecessary static var from dynamic linkerRich Felker-2/+2
2012-11-01fix more unused variable warningsRich Felker-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 Felker-2/+1
2012-11-01avoid breakage if somebody wrongly defines empty feature test macrosRich Felker-3/+3
2012-10-31add dl_iterate_phdr interfaceRich Felker-7/+114
patches by Alex Caudill (npx). the dynamic-linked version is almost identical to the final submitted patch; I just added a couple missing lines for saving the phdr address when the dynamic linker is invoked directly to run a program, and removed a couple to avoid introducing another unnecessary type. the static-linked version is based on npx's draft. it could use some improvements which are contingent on the startup code saving some additional information for later use.
2012-10-28system is a cancellation pointRich Felker-0/+3
ideally, system would also be cancellable while running the external command, but I cannot find any way to make that work without either leaking zombie processes or introducing behavior that is far outside what the standard specifies. glibc handles cancellation by killing the child process with SIGKILL, but this could be unsafe in that it could leave the data being manipulated by the command in an inconsistent state.
2012-10-28release notes for 0.9.7v0.9.7Rich Felker-0/+31
2012-10-28fix shmdt syscall calling convention on old archsRich Felker-1/+1
2012-10-27separate getc/putc from fgetc/fputcRich Felker-6/+25
for conformance, two functions should not have the same address. a conforming program could use the addresses of getc and fgetc in ways that assume they are distinct. normally i would just use a wrapper, but these functions are so small and performance-critical that an extra layer of function call could make the one that's a wrapper nearly twice as slow, so I'm just duplicating the code instead.
2012-10-26update documentationRich Felker-33/+67
2012-10-26further pcc fixes in configureRich Felker-3/+4
-lpcc only works if -nostdlib is not passed, so it's useless. instead, use -print-file-name to look up the full pathname for libpcc.a, and check whether that succeeds before trying to link with the result. also, silence pcc's junk printed on stdout during tests.
2012-10-26add support for detecting pcc's compiler runtimeRich Felker-0/+1
in old versions of pcc, the directory containing libpcc.a was not in the library path, and other options like -print-file-name may have been needed to locate it. however, -print-file-name itself seems to have been added around the same time that the directory was added to the search path, and moreover, I see no evidence that older versions of pcc are capable of building a working musl shared library. thus, it seems reasonable to just test whether -lpcc is accepted.
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