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* fixup mcontext stuff to expost gregset_t/fpregset_t as appropriateRich Felker2012-11-251-1/+19
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* make sys/procfs.h mostly work on most archsRich Felker2012-11-251-0/+4
| | | | | | | | these structures are purely for use by trace/debug tools and tools working with core files. the definition of fpregset_t, which was previously here, has been removed because it was wrong; fpregset_t should be the type used in mcontext_t, not the type used in ptrace/core stuff.
* begin sys/user.h and sys/reg.h fixes for portsRich Felker2012-11-232-40/+53
| | | | | | aside from microblaze, these should be roughly correct for all archs now. some misc junk macros and typedefs are missing, which should probably be added for max compatibility with trace/debug tools.
* fix termios constants on mipsRich Felker2012-11-231-10/+21
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* sigcontext/mcontext cleanup for arch-specific bitsRich Felker2012-11-231-11/+11
| | | | | | | | | | | | | | | | | with these changes, the members/types of mcontext_t and related stuff should closely match the glibc definitions. unlike glibc, however, the definitions here avoid using typedefs as much as possible and work directly with the underlying types, to minimize namespace pollution from signal.h in the default (_BSD_SOURCE) profile. this is a first step in improving compatibility with applications which poke at context/register information -- mainly debuggers, trace utilities, etc. additional definitions in ucontext.h and other headers may be needed later. if feature test macros are used to request a conforming namespace, mcontext_t is replaced with an opaque structure of the equivalent size and alignment; conforming programs cannot examine its contents anyway.
* fix up leftover, incorrect NSIG definitions in arch-specific signal.hRich Felker2012-11-231-1/+0
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* add back NSIG, removed from powerpc in last commit, but for all archsRich Felker2012-11-211-0/+2
| | | | | | | | 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.
* fix breakage from introducing bits header for sys/io.hRich Felker2012-11-181-0/+0
| | | | | | 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.
* fcntl.h: O_SEARCH was missing for powerpcrofl0r2012-11-181-12/+9
| | | | | | 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.
* disable SO_REUSEPORT in sys/socket.hRich Felker2012-11-151-1/+1
| | | | | | 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.
* fix numerous mips abi constant definition mismatchesRich Felker2012-11-053-89/+120
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* better support for reverse-endian variants of arm/mips/microblazeRich Felker2012-10-181-0/+4
| | | | these macros are supported by more compilers
* floating point environment/exceptions support for mipsRich Felker2012-10-181-3/+13
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* fix broken semctl on systems that don't use IPC_64 flagRich Felker2012-09-221-0/+2
| | | | | not tested on mips and arm; they may still be broken. x86_64 should be ok now.
* add O_EXEC open modeRich Felker2012-09-151-0/+1
| | | | | the linux O_PATH mode provides the necessary semantics for both the O_SEARCH and O_EXEC modes defined and required by POSIX 2008.
* add O_PATH/O_SEARCH support to fcntl.hRich Felker2012-09-131-0/+2
| | | | | | | I'm not 100% sure that Linux's O_PATH meets the POSIX requirements for O_SEARCH, but it seems very close if not perfect. and old kernels ignore it, so O_SEARCH will still work as desired as long as the caller has read permissions to the directory.
* syscall organization overhaulRich Felker2012-09-081-87/+0
| | | | | | | | | | | | now public syscall.h only exposes __NR_* and SYS_* constants and the variadic syscall function. no macros or inline functions, no __syscall_ret or other internal details, no 16-/32-bit legacy syscall renaming, etc. this logic has all been moved to src/internal/syscall.h with the arch-specific parts in arch/$(ARCH)/syscall_arch.h, and the amount of arch-specific stuff has been reduced to a minimum. changes still need to be reviewed/double-checked. minimal testing on i386 and mips has already been performed.
* avoid "inline" in public headers for strict c89 compatibilityRich Felker2012-09-021-7/+7
| | | | | | | | | while musl itself requires a c99 compiler, some applications insist on being compiled with c89 compilers, and use of "inline" in the headers was breaking them. much of this had been avoided already by just skipping the inline keyword in pre-c99 compilers or modes, but this new unified solution is cleaner and may/should result in better code generation in the default gcc configuration.
* fix incorrect ptrdiff_t type on mipsRich Felker2012-08-101-1/+1
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* add defines for number of sigset_t bytes syscalls expectRich Felker2012-08-091-0/+2
| | | | yet another gratuitous mips incompatibility...
* further fixes for mips ioctl.h headerRich Felker2012-08-071-4/+4
| | | | untested; hopefully it's right now
* fix another mips gratuitous-incompatibility bug: ioctl numbersRich Felker2012-08-071-2/+2
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* fix socket.h on mipsRich Felker2012-08-051-0/+3
| | | | | why does mips have to be gratuitously incompatible in every possible imaginable way?
* add floating point register saving/restoring to mips setjmp/longjmpRich Felker2012-07-221-1/+1
| | | | | | | 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.
* workaround another sendmsg kernel bug on 64-bit machinesRich Felker2012-07-121-0/+7
| | | | | | | | | 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.
* fix redef of sigprocmask constants on mipsRich Felker2012-07-121-0/+3
| | | | this fix is easier than trying to reorder the header stuff
* more mips bits-header fixesRich Felker2012-07-121-2/+6
| | | | signal handling was very broken because of this
* fix mips syscalls with long long argsRich Felker2012-07-121-1/+1
| | | | | like arm, mips requires 64-bit arguments to be "aligned" on an even register boundary.
* fix mips mcontext_t structure sizeRich Felker2012-07-121-1/+5
| | | | | otherwise offs in ucontext_t will be wrong, and break code that inspects or modifies the signal makes (including cancellation code).
* fix MAP_ANONYMOUS value for mips, remove cruft copied from i386Rich Felker2012-07-111-2/+1
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* initial version of mips (o32) port, based on work by Richard Pennington (rdp)Rich Felker2012-07-1125-0/+1809
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.