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* move wint_t definition to the shared part of alltypes.h.inRich Felker2014-12-211-1/+0
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* add arm private syscall numbersTimo Teräs2014-12-031-0/+5
| | | | it is part of kernel uapi, and some programs (e.g. nodejs) do use them
* add new syscall numbers for seccomp, getrandom, memfd_createSzabolcs Nagy2014-10-081-0/+6
| | | | | | | | | | | | | | | | | | these syscalls are new in linux v3.17 and present on all supported archs except sh. seccomp was added in commit 48dc92b9fc3926844257316e75ba11eb5c742b2c it has operation, flags and pointer arguments (if flags==0 then it is the same as prctl(PR_SET_SECCOMP,...)), the uapi header for flag definitions is linux/seccomp.h getrandom was added in commit c6e9d6f38894798696f23c8084ca7edbf16ee895 it provides an entropy source when open("/dev/urandom",..) would fail, the uapi header for flags is linux/random.h memfd_create was added in commit 9183df25fe7b194563db3fec6dc3202a5855839c it allows anon mmap to have an fd, that can be shared, sealed and needs no mount point, the uapi header for flags is linux/memfd.h
* add threads.h and needed per-arch types for mtx_t and cnd_tRich Felker2014-09-061-0/+2
| | | | | | | | | | | | | | | | based on patch by Jens Gustedt. mtx_t and cnd_t are defined in such a way that they are formally "compatible types" with pthread_mutex_t and pthread_cond_t, respectively, when accessed from a different translation unit. this makes it possible to implement the C11 functions using the pthread functions (which will dereference them with the pthread types) without having to use the same types, which would necessitate either namespace violations (exposing pthread type names in threads.h) or incompatible changes to the C++ name mangling ABI for the pthread types. for the rest of the types, things are much simpler; using identical types is possible without any namespace considerations.
* add max_align_t definition for C11 and C++11Rich Felker2014-08-201-0/+2
| | | | | | | | | | | | | | | | | unfortunately this needs to be able to vary by arch, because of a huge mess GCC made: the GCC definition, which became the ABI, depends on quirks in GCC's definition of __alignof__, which does not match the formal alignment of the type. GCC's __alignof__ unexpectedly exposes the an implementation detail, its "preferred alignment" for the type, rather than the formal/ABI alignment of the type, which it only actually uses in structures. on most archs the two values are the same, but on some (at least i386) the preferred alignment is greater than the ABI alignment. I considered using _Alignas(8) unconditionally, but on at least one arch (or1k), the alignment of max_align_t with GCC's definition is only 4 (even the "preferred alignment" for these types is only 4).
* make pointers used in robust list volatileRich Felker2014-08-171-1/+1
| | | | | | | | | | | | | | | | | | | | when manipulating the robust list, the order of stores matters, because the code may be asynchronously interrupted by a fatal signal and the kernel will then access the robust list in what is essentially an async-signal context. previously, aliasing considerations made it seem unlikely that a compiler could reorder the stores, but proving that they could not be reordered incorrectly would have been extremely difficult. instead I've opted to make all the pointers used as part of the robust list, including those in the robust list head and in the individual mutexes, volatile. in addition, the format of the robust list has been changed to point back to the head at the end, rather than ending with a null pointer. this is to match the documented kernel robust list ABI. the null pointer, which was previously used, only worked because faults during access terminate the robust list processing.
* add syscall numbers for the new renameat2 syscallSzabolcs Nagy2014-07-201-0/+2
| | | | | it's like rename but with flags eg. to allow atomic exchange of two files, introduced in linux 3.15 commit 520c8b16505236fc82daa352e6c5e73cd9870cff
* add sched_{get,set}attr syscall numbers and SCHED_DEADLINE macroSzabolcs Nagy2014-05-301-0/+4
| | | | | | | | | | | | linux 3.14 introduced sched_getattr and sched_setattr syscalls in commit d50dde5a10f305253cbc3855307f608f8a3c5f73 and the related SCHED_DEADLINE scheduling policy in commit aab03e05e8f7e26f51dee792beddcb5cca9215a5 but struct sched_attr "extended scheduling parameters data structure" is not yet exported to userspace (necessary for using the syscalls) so related uapi definitions are not added yet.
* fix RLIMIT_ constants for mipsSzabolcs Nagy2014-04-151-0/+0
| | | | | | | The mips arch is special in that it uses different RLIMIT_ numbers than other archs, so allow bits/resource.h to override the default RLIMIT_ numbers (empty on all archs except mips). Reported by orc.
* fix signal.h breakage from moving stack_t to arch-specific bitsRich Felker2014-03-181-6/+6
| | | | | | in the previous changes, I missed the fact that both the prototype of the sigaltstack function and the definition of ucontext_t depend on stack_t.
* move signal.h definition of stack_t to arch-specific bitsRich Felker2014-03-181-0/+6
| | | | | it's different at least on mips. mips version will be fixed in a separate commit to show the change.
* move struct semid_ds to from shared sys/sem.h to bitsRich Felker2014-03-111-0/+16
| | | | | | | | | | | | the definition was found to be incorrect at least for powerpc, and fixing this cleanly requires making the definition arch-specific. this will allow cleaning up the definition for other archs to make it more specific, and reversing some of the ugliness (time_t hacks) introduced with the x32 port. this first commit simply copies the existing definition to each arch without any changes. this is intentional, to make it easier to review changes made on a per-arch basis.
* sys/shm.h: move arch specific structs to bits/rofl0r2014-02-231-0/+11
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* add IUTF8 to termios.h on archs that were missing itRich Felker2014-01-081-0/+1
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* fix namespace violations in termios.h, at least mostlyRich Felker2014-01-081-8/+7
| | | | | | the fix should be complete on archs that use the generic definitions (i386, arm, x86_64, microblaze), but mips and powerpc have not been checked thoroughly and may need more fixes.
* add O_TMPFILE flag, new in linux 3.11Szabolcs Nagy2013-11-231-0/+1
| | | | | | definition in linux: #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY) where __O_TMPFILE and O_DIRECTORY are arch specific
* fix the nominal type of LDBL_* limits on archs with ld64Rich Felker2013-11-201-4/+4
| | | | | | | | | | | previously these macros wrongly had type double rather than long double. I see no way an application could detect the error in C99, but C11's _Generic can trivially detect it. at the same time, even though these archs do not have excess precision, the number of decimal places used to represent these constants has been increased to 21 to be consistent with the decimal representations used for the DBL_* macros.
* fix detection of arm hardfloatRich Felker2013-08-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | it turns out that __SOFTFP__ does not indicate the ABI in use but rather that fpu instructions are not to be used at all. this is specified in ARM's documentation so I'm unclear on how I previously got the wrong idea. unfortunately, this resulted in the 0.9.12 release producing a dynamic linker with the wrong name. fortunately, there do not yet seem to be any public toolchain builds using the wrong name. the __ARM_PCS_VFP macro does not seem to be official from ARM, and in fact it was missing from the very earliest gcc versions (around 4.5.x) that added -mfloat-abi=hard. it would be possible on such versions to perform some ugly linker-based tests instead in hopes that the linker will reject ABI-mismatching object files, if there is demand for supporting such versions. I would probably prefer to document which versions are broken and warn users to manually add -D__ARM_PCS_VFP if using such a version. there's definitely an argument to be made that the fenv macros should be exposed even in -mfloat-abi=softfp mode. for now, I have chosen not to expose them in this case, since the math library will not necessarily have the capability to raise exceptions (it depends on the CFLAGS used to compile it), and since exceptions are officially excluded from the ARM EABI, which the plain "arm" arch aims to follow.
* support floating point environment (fenv) on armhf (hard float) subarchsRich Felker2013-08-161-0/+13
| | | | | patch by nsz. I've tested it on an armhf machine and it seems to be working correctly.
* change jmp_buf to share an underlying type and struct tag with sigjmp_bufRich Felker2013-07-241-1/+1
| | | | | | | | | | this is necessary to meet the C++ ABI target. alternatives were considered to avoid the size increase for non-sig jmp_buf objects, but they seemed to have worse properties. moreover, the relative size increase is only extreme on x86[_64]; one way of interpreting this is that, if the size increase from this patch makes jmp_buf use too much memory, then the program was already using too much memory when built for non-x86 archs.
* remove SIG_ATOMIC_MIN/MAX from stdint bits headersRich Felker2013-07-221-2/+0
| | | | i386 was done with the big commit but I missed the others
* fix regression in size of nlink_t (broken stat struct) on x86_64Rich Felker2013-07-221-0/+1
| | | | | | | | rather than moving nlink_t back to the arch-specific file, I've added a macro _Reg defined to the canonical type for register-size values on the arch. this is not the same as _Addr for (not-yet-supported) 32-on-64 pseudo-archs like x32 and mips n32, so a new macro was needed.
* change wint_t to unsignedRich Felker2013-07-221-1/+1
| | | | | | | | | | | | aside from the obvious C++ ABI purpose for this change, it also brings musl into alignment with the compiler's idea of the definition of wint_t (use in -Wformat), and makes the situation less awkward on ARM, where wchar_t is unsigned. internal code using wint_t and WEOF was checked against this change, and while a few cases of storing WEOF into wchar_t were found, they all seem to operate properly with the natural conversion from unsigned to signed.
* refactor headers, especially alltypes.h, and improve C++ ABI compatRich Felker2013-07-223-133/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the arch-specific bits/alltypes.h.sh has been replaced with a generic alltypes.h.in and minimal arch-specific bits/alltypes.h.in. this commit is intended to have no functional changes except: - exposing additional symbols that POSIX allows but does not require - changing the C++ name mangling for some types - fixing the signedness of blksize_t on powerpc (POSIX requires signed) - fixing the limit macros for sig_atomic_t on x86_64 - making dev_t an unsigned type (ABI matching goal, and more logical) in addition, some types that were wrongly defined with long on 32-bit archs were changed to int, and vice versa; this change is non-functional except for the possibility of making pointer types mismatch, and only affects programs that were using them incorrectly, and only at build-time, not runtime. the following changes were made in the interest of moving non-arch-specific types out of the alltypes system and into the headers they're associated with, and also will tend to improve application compatibility: - netdb.h now includes netinet/in.h (for socklen_t and uint32_t) - netinet/in.h now includes sys/socket.h and inttypes.h - sys/resource.h now includes sys/time.h (for struct timeval) - sys/wait.h now includes signal.h (for siginfo_t) - langinfo.h now includes nl_types.h (for nl_item) for the types in stdint.h: - types which are of no interest to other headers were moved out of the alltypes system. - fast types for 8- and 64-bit are hard-coded (at least for now); only the 16- and 32-bit ones have reason to vary by arch. and the following types have been changed for C++ ABI purposes; - mbstate_t now has a struct tag, __mbstate_t - FILE's struct tag has been changed to _IO_FILE - DIR's struct tag has been changed to __dirstream - locale_t's struct tag has been changed to __locale_struct - pthread_t is defined as unsigned long in C++ mode only - fpos_t now has a struct tag, _G_fpos64_t - fsid_t's struct tag has been changed to __fsid_t - idtype_t has been made an enum type (also required by POSIX) - nl_catd has been changed from long to void * - siginfo_t's struct tag has been removed - sigset_t's has been given a struct tag, __sigset_t - stack_t has been given a struct tag, sigaltstack - suseconds_t has been changed to long on 32-bit archs - [u]intptr_t have been changed from long to int rank on 32-bit archs - dev_t has been made unsigned summary of tests that have been performed against these changes: - nsz's libc-test (diff -u before and after) - C++ ABI check symbol dump (diff -u before, after, glibc) - grepped for __NEED, made sure types needed are still in alltypes - built gcc 3.4.6
* change uid_t, gid_t, and id_t to unsigned typesRich Felker2013-07-191-3/+3
| | | | | | | | | this change is both to fix one of the remaining type (and thus C++ ABI) mismatches with glibc/LSB and to allow use of the full range of uid and gid values, if so desired. passwd/group access functions were not prepared to deal with unsigned values, so they too have been fixed with this commit.
* respect iso c namespace in stdio.h and wchar.h regarding va_listRich Felker2013-06-251-0/+1
| | | | | | | | | | despite declaring functions that take arguments of type va_list, these headers are not permitted by the c standard to expose the definition of va_list, so an alias for the type must be used. the name __isoc_va_list was chosen to convey that the purpose of this alternate name is for iso c conformance, and to avoid the multitude of names which gcc mangles with its hideous "fixincludes" monstrosity, leading to serious header breakage if these "fixes" are run.
* Merge remote-tracking branch 'nsz/review'Rich Felker2013-05-261-3/+3
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| * fix ioctl _IOR, _IOW, etc macros to avoid signed overflow (2<<30)Szabolcs Nagy2013-05-261-3/+3
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* | change underlying type of clock_t to be uniform and match ABIRich Felker2013-05-231-1/+1
|/ | | | | | | | | | previously we were using an unsigned type on 32-bit systems so that subtraction would be well-defined when it wrapped, but since wrapping is non-conforming anyway (when clock() overflows, it has to return -1) the only use of unsigned would be to buy a little bit more time before overflow. this does not seem worth having the type vary per-arch (which leads to more arch-specific bugs) or disagree with the ABI musl (mostly) follows.
* add FLT_TRUE_MIN, etc. macros from C11Rich Felker2013-05-171-0/+1
| | | | | | | | there was some question as to how many decimal places to use, since one decimal place is always sufficient to identify the smallest denormal uniquely. for now, I'm following the example in the C standard which is consistent with the other min/max macros we already had in place.
* fix type issues in stdint.h so underlying types of 64-bit types match ABIRich Felker2013-04-041-0/+3
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* eliminate bits/wchar.hRich Felker2013-04-041-4/+0
| | | | | | | the preprocessor can reliably determine the signedness of wchar_t. L'\0' is used for 0 in the expressions so that, if the underlying type of wchar_t is long rather than int, the promoted type of the expression will match the type of wchar_t.
* re-add useconds_trofl0r2013-04-021-0/+1
| | | | | | | | this type was removed back in 5243e5f1606a9c6fcf01414e , because it was removed from the XSI specs. however some apps use it. since it's in the POSIX reserved namespace, we can expose it unconditionally.
* add syscall numbers for the new kcmp and finit_module syscallsSzabolcs Nagy2013-04-011-0/+4
| | | | and remove syscall todos from microblaze
* add deprecated SIGIOT alias for SIGABRTRich Felker2013-03-231-0/+1
| | | | reportedly some programs (e.g. showkeys in the kbd package) use it.
* fix types for wctype_t and wctrans_tRich Felker2013-03-041-2/+2
| | | | | | | | | | | | | | | | | | | | wctype_t was incorrectly "int" rather than "long" on x86_64. not only is this an ABI incompatibility; it's also a major design flaw if we ever wanted wctype_t to be implemented as a pointer, which would be necessary if locales support custom character classes, since int is too small to store a converted pointer. this commit fixes wctype_t to be unsigned long on all archs, matching the LSB ABI; this change does not matter for C code, but for C++ it affects mangling. the same issue applied to wctrans_t. glibc/LSB defines this type as const __int32_t *, but since no such definition is visible, I've just expanded the definition, int, everywhere. it would be nice if these types (which don't vary by arch) could be in wctype.h, but the OB XSI requirement in POSIX that wchar.h expose some types and functions from wctype.h precludes doing so. glibc works around this with some hideous hacks, but trying to duplicate that would go against the intent of musl's headers.
* add missing mmap options and madvices to bits/mman.h based on linux headersSzabolcs Nagy2013-01-121-0/+7
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* add missing EXTPROC flag to bits/termios.hSzabolcs Nagy2013-01-121-0/+1
| | | | mips and powerpc already had this termios flag defined
* add missing F_GETOWNER_UIDS flag to bits/fcntl.hSzabolcs Nagy2013-01-121-0/+2
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* add missing EHWPOISON to bits/errno.hSzabolcs Nagy2013-01-121-0/+1
| | | | it was already defined for mips, but was missing from other archs
* add more arch-specific MAP_ macros to bits/mman.hrofl0r2012-12-061-0/+4
| | | | these are also needed by qemu.
* remove MAP_32 from non-x86 archsrofl0r2012-12-061-1/+0
| | | | both kernel and glibc define it only on x86(_64).
* add MAP_NORESERVE to bits/mman.hrofl0r2012-12-061-0/+1
| | | | | this is needed for qemu, and since it differs for each arch it can't be circumvented easily by using a macro in CFLAGS.
* fix regression in arm user.h that happened during big user.h changesRich Felker2012-12-041-0/+1
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* fixup mcontext stuff to expost gregset_t/fpregset_t as appropriateRich Felker2012-11-251-0/+1
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* make sys/procfs.h mostly work on most archsRich Felker2012-11-251-2/+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 Felker2012-11-231-21/+14
| | | | | | 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.
* sigcontext/mcontext cleanup for arch-specific bitsRich Felker2012-11-231-13/+13
| | | | | | | | | | | | | | | | | 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.
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