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2012-11-21add back NSIG, removed from powerpc in last commit, but for all archsRich Felker-0/+13
unlike the previous definition, NSIG/_NSIG is supposed to be one more than the highest signal number. adding this will allow simplifying libc-internal code that makes signal-related syscalls, which can be done as a later step. some apps might use it too; while this usage is questionable, it's at least not insane.
2012-11-21make powerpc signal.h namespace-clean for posix/isocRich Felker-19/+32
also handle the non-GNUC case where alignment attribute is not available by simply omitting it. this will not cause problems except for inclusion of mcontex_t/ucontext_t in application-defined structures, since the natural alignment of the uc_mcontext member relative to the start of ucontext_t is already correct. and shame on whoever designed this for making it impossible to satisfy the ABI requirements without GNUC extensions.
2012-11-21fix powerpc types to match abi, and some feature test issuesRich Felker-7/+8
2012-11-21fix invalid usage of mcontext_t in powerpc signal.hrofl0r-1/+1
2012-11-19powerpc: handle syscall error in clone.rofl0r-39/+24
sigsetjmp: store temporaries in jmp_buf rather than on stack.
2012-11-18fix error in configure script using >/dev/null in noclobber modeRich Felker-1/+1
2012-11-18fix powerpc asm not to store data in volatile space below stack pointerRich Felker-12/+12
it's essential to decrement the stack pointer before writing to new stack space, rather than afterwards. otherwise there is a race condition during which asynchronous code (signals) could clobber the data being stored. it may be possible to optimize the code further using stwu, but I wanted to avoid making any changes to the actual stack layout in this commit. further improvements can be made separately if desired.
2012-11-18fix breakage from introducing bits header for sys/io.hRich Felker-6/+3
apparently some other archs have sys/io.h and should not break just because they don't have the x86 port io functions. provide a blank bits/io.h everywhere for now.
2012-11-18add port io functions to sys/io.hRich Felker-4/+167
based on proposal by Isaac Dunham. nonexistance of bits/io.h will cause inclusion of sys/io.h to produce an error on archs that are not supposed to have it. this is probably the desired behavior, but the error message may be a bit unusual.
2012-11-18add missing const on powerpc FE_DFL_ENVRich Felker-1/+1
2012-11-18fenv support for ppc, untestedRich Felker-7/+148
based on code sent to the mailing list by nsz, with minor changes.
2012-11-18fix feholdexcept -- it needs to clear exceptions after saving environmentRich Felker-0/+1
2012-11-18Merge remote-tracking branch 'nsz/math'Rich Felker-237/+171
2012-11-18fcntl.h: O_SEARCH was missing for powerpcrofl0r-24/+13
put some macros that do not differ between architectures in the main header and remove from bits. restructure mips header so it has the same structure as the others.
2012-11-18math: use float constants in exp10f.cSzabolcs Nagy-1/+1
use the 'f' suffix when a float constant is not representable
2012-11-18math: expl.c cleanupSzabolcs Nagy-24/+19
raise overflow and underflow when necessary, fix various comments.
2012-11-18math: expf.c cleanupSzabolcs Nagy-63/+55
similar to exp.c cleanup: use scalbnf, don't return excess precision, drop some optimizatoins. exp.c was changed to be more consistent with expf.c code.
2012-11-18ppc socket.h: add forgotten cmsghdrrofl0r-0/+7
2012-11-17fix typo in dynamic linker path file loading codeRich Felker-1/+1
fortunately the memory corruption could not hurt anything, but it prevented clearing the final newline and thus prevented the last path element from working.
2012-11-17add cleaned-up sys/mtio.hRich Felker-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 Felker-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.
2012-11-17math: cleanup exp2.c exp2f.c and exp2l.cSzabolcs Nagy-86/+56
* old code relied on sign extension on right shift * exp2l ld64 wrapper was wrong * use scalbn instead of bithacks
2012-11-17arg-skipping code for powerpc dynamic linkerRich Felker-0/+8
this allows using the dynamic linker as a command to load programs.
2012-11-17math: exp.c clean upSzabolcs Nagy-72/+49
overflow and underflow was incorrect when the result was not stored. an optimization for the 0.5*ln2 < |x| < 1.5*ln2 domain was removed. did various cleanups around static constants and made the comments consistent with the code.
2012-11-16dynamic linking support for powerpcRich Felker-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 Felker-4/+3
2012-11-16fix powerpc termios.h and ioctl.hrofl0r-192/+232
2012-11-15disable SO_REUSEPORT in sys/socket.hRich Felker-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 Felker-1/+1
2012-11-15Merge remote-tracking branch 'nsz/math'Rich Felker-372/+339
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
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