| Commit message (Expand) | Author | Age | Files | Lines |
|---|
| * | add float_t and double_t to math.h | Rich Felker | 2012-02-15 | 1 | -0/+3 |
| * | replace bad cancellation cleanup abi with a sane one•••the old abi was intended to duplicate glibc's abi at the expense of
being ugly and slow, but it turns out glib was not even using that abi
except on non-gcc-compatible compilers (which it doesn't even support)
and was instead using an exceptions-in-c/unwind-based approach whose
abi we could not duplicate anyway without nasty dwarf2/unwind
integration.
the new abi is copied from a very old glibc abi, which seems to still
be supported/present in current glibc. it avoids all unwinding,
whether by sjlj or exceptions, and merely maintains a linked list of
cleanup functions to be called from the context of pthread_exit. i've
made some care to ensure that longjmp out of a cleanup function should
work, even though it is not required to.
this change breaks abi compatibility with programs which were using
pthread cancellation, which is unfortunate, but that's why i'm making
the change now rather than later. considering that most pthread
features have not been usable until recently anyway, i don't see it as
a major issue at this point.
| Rich Felker | 2012-02-09 | 1 | -6/+0 |
| * | don't define wchar_t on c++•••it's a keyword in c++ (wtf). i'm not sure this is the cleanest
solution; it might be better to avoid ever defining __NEED_wchar_t on
c++. but in any case, this works for now.
| Rich Felker | 2011-10-15 | 1 | -0/+2 |
| * | fix x86_64 user.h (previously was just a copy of i386) | Rich Felker | 2011-09-22 | 1 | -48/+13 |
| * | wrong __WORDSIZE in x86_64 header | Rich Felker | 2011-09-22 | 1 | -1/+1 |
| * | update syscalls with off_t arguments to handle argument alignment, if needed•••the arm syscall abi requires 64-bit arguments to be aligned on an even
register boundary. these new macros facilitate meeting the abi
requirement without imposing significant ugliness on the code.
| Rich Felker | 2011-09-21 | 1 | -1/+2 |
| * | fix the definition of struct statvfs to match lsb abi•••at the same time, make struct statfs match the traditional definition
and make it more useful, especially the fsid_t stuff.
| Rich Felker | 2011-09-19 | 1 | -14/+6 |
| * | cleanup redundancy in bits/signal.h versions | Rich Felker | 2011-09-19 | 1 | -129/+9 |
| * | fix the type of wchar_t on arm; support wchar_t varying with arch•••really wchar_t should never vary, but the ARM EABI defines it as an
unsigned 32-bit int instead of a signed one, and gcc follows this
nonsense. thus, to give a conformant environment, we have to follow
(otherwise L""[0] and L'\0' would be 0U rather than 0, but the
application would be unaware due to a mismatched definition for
WCHAR_MIN and WCHAR_MAX, and Bad Things could happen with respect to
signed/unsigned comparisons, promotions, etc.).
fortunately no rules are imposed by the C standard on the relationship
between wchar_t and wint_t, and WEOF has type wint_t, so we can still
make wint_t always-signed and use -1 for WEOF.
| Rich Felker | 2011-09-19 | 1 | -0/+4 |
| * | cleanup more bits cruft (sysmacros and socket) | Rich Felker | 2011-09-18 | 2 | -207/+0 |
| * | more bits junk (tcp.h) | Rich Felker | 2011-09-18 | 1 | -1/+0 |
| * | move invariant netinet/in.h stuff out of bits/in.h | Rich Felker | 2011-09-18 | 1 | -145/+0 |
| * | typo in macro definitions for x86_64 | Rich Felker | 2011-08-14 | 1 | -1/+1 |
| * | socket headers macro adjustment - workaround for buggy programs•••some program was undefining AF_NETLINK and thereby breaking AF_ROUTE...
| Rich Felker | 2011-07-21 | 1 | -1/+1 |
| * | move all limits that don't vary out of bits/limits.h, into main limits.h | Rich Felker | 2011-06-25 | 1 | -27/+1 |
| * | use compiler builtins for variadic macros when available•••this slightly cuts down on the degree musl "fights with" gcc, but more
importantly, it fixes a critical bug when gcc inlines a variadic
function and optimizes out the variadic arguments due to noticing that
they were "not used" (by __builtin_va_arg).
we leave the old code in place if __GNUC__ >= 3 is false; it seems
like it might be necessary at least for tinycc support and perhaps if
anyone ever gets around to fixing gcc 2.95.3 enough to make it work..
| Rich Felker | 2011-04-27 | 1 | -1/+0 |
| * | move wait.h macros out of bits. they do not vary. | Rich Felker | 2011-04-21 | 2 | -23/+0 |
| * | namespace fixes for sys/mman.h | Rich Felker | 2011-04-20 | 1 | -15/+15 |
| * | add syscall wrappers for posix_fadvise, posix_fallocate | Rich Felker | 2011-04-20 | 1 | -0/+2 |
| * | overhaul pthread cancellation•••this patch improves the correctness, simplicity, and size of
cancellation-related code. modulo any small errors, it should now be
completely conformant, safe, and resource-leak free.
the notion of entering and exiting cancellation-point context has been
completely eliminated and replaced with alternative syscall assembly
code for cancellable syscalls. the assembly is responsible for setting
up execution context information (stack pointer and address of the
syscall instruction) which the cancellation signal handler can use to
determine whether the interrupted code was in a cancellable state.
these changes eliminate race conditions in the previous generation of
cancellation handling code (whereby a cancellation request received
just prior to the syscall would not be processed, leaving the syscall
to block, potentially indefinitely), and remedy an issue where
non-cancellable syscalls made from signal handlers became cancellable
if the signal handler interrupted a cancellation point.
x86_64 asm is untested and may need a second try to get it right.
| Rich Felker | 2011-04-17 | 1 | -1/+2 |
| * | fix O_SYNC definition, cleanup fcntl.h | Rich Felker | 2011-04-14 | 1 | -11/+5 |
| * | fix FAPPEND typo on x86_64 (previously only fixed on i386) | Rich Felker | 2011-04-14 | 1 | -1/+1 |
| * | fcntl.h: move macros that do not vary between archs out of bits | Rich Felker | 2011-04-14 | 1 | -24/+0 |
| * | fix broken fcntl locks on x86_64 | Rich Felker | 2011-04-14 | 1 | -3/+3 |
| * | numerous fixes to sysv ipc•••some of these definitions were just plain wrong, others based on
outdated ancient "non-64" versions of the kernel interface.
as much as possible has now been moved out of bits/*
these changes break abi (the old abi for these functions was wrong),
but since they were not working anyway it can hardly matter.
| Rich Felker | 2011-04-13 | 3 | -24/+15 |
| * | fix and cleanup suseconds_t/timeval stuff (broken on 64-bit)•••trash in the upper 32 bits was making the kernel sleep forever in
select on 64-bit systems.
| Rich Felker | 2011-04-13 | 1 | -1/+1 |
| * | more types cleanup•••the basic idea is that the only things in alltypes.h should be types
that either vary from system to system (in practice, not just in
theoretical la-la land - this is the implementation so we choose what
constraints we want to impose on ports) or which are needed by
multiple system headers.
| Rich Felker | 2011-04-11 | 1 | -3/+0 |
| * | cleanup types stuff in headers, fix missing u_int*_t in sys/types.h | Rich Felker | 2011-04-11 | 1 | -11/+0 |
| * | add missing float.h macros•••actually FLT_ROUNDS needs to expand to a static inline function that
obtains the current rounding mode and returns it, but that will be
added later with fenv.h stuff.
| Rich Felker | 2011-04-10 | 1 | -0/+3 |
| * | workaround broken msghdr struct on 64bit linux•••POSIX clearly specifies the type of msg_iovlen and msg_controllen, and
Linux ignores it and makes them both size_t instead. to work around
this we add padding (instead of just using the wrong types like glibc
does), but we also need to patch-up the struct before passing it to
the kernel in case the caller did not zero-fill it.
if i could trust the kernel to just ignore the upper 32 bits, this
would not be necessary, but i don't think it will ignore them...
| Rich Felker | 2011-04-08 | 1 | -2/+2 |
| * | add ip6 pktinfo stuff for x86_64•••these defs should probably all be moved out of bits and unified...
| Rich Felker | 2011-04-05 | 1 | -0/+12 |
| * | uncomment IP_PKTINFO•••this was a hack leftover from testing before the initial
check-in to git.
| Rich Felker | 2011-04-05 | 1 | -1/+1 |
| * | fix statvfs syscalls (missing size argument) | Rich Felker | 2011-04-03 | 1 | -1/+1 |
| * | remove obsolete and useless useconds_t type | Rich Felker | 2011-04-01 | 1 | -1/+0 |
| * | somehow timespec tv_nsec had the wrong type on x86_64... fixed | Rich Felker | 2011-04-01 | 1 | -1/+1 |
| * | avoid all malloc/free in timer creation/destruction•••instead of allocating a userspace structure for signal-based timers,
simply use the kernel timer id. we use the fact that thread pointers
will always be zero in the low bit (actually more) to encode integer
timerid values as pointers.
also, this change ensures that the timer_destroy syscall has completed
before the library timer_destroy function returns, in case it matters.
| Rich Felker | 2011-03-30 | 1 | -1/+1 |
| * | some preliminaries for adding POSIX timers | Rich Felker | 2011-03-29 | 1 | -1/+1 |
| * | fix typo in x86_64 part of syscall overhaul | Rich Felker | 2011-03-19 | 1 | -1/+1 |
| * | syscall overhaul part two - unify public and internal syscall interface•••with this patch, the syscallN() functions are no longer needed; a
variadic syscall() macro allows syscalls with anywhere from 0 to 6
arguments to be made with a single macro name. also, manually casting
each non-integer argument with (long) is no longer necessary; the
casts are hidden in the macros.
some source files which depended on being able to define the old macro
SYSCALL_RETURNS_ERRNO have been modified to directly use __syscall()
instead of syscall(). references to SYSCALL_SIGSET_SIZE and SYSCALL_LL
have also been changed.
x86_64 has not been tested, and may need a follow-up commit to fix any
minor bugs/oversights.
| Rich Felker | 2011-03-19 | 2 | -2/+69 |
| * | overhaul syscall interface•••this commit shuffles around the location of syscall definitions so
that we can make a syscall() library function with both SYS_* and
__NR_* style syscall names available to user applications, provides
the syscall() library function, and optimizes the code that performs
the actual inline syscalls in the library itself.
previously on i386 when built as PIC (shared library), syscalls were
incurring bus lock (lock prefix) overhead at entry and exit, due to
the way the ebx register was being loaded (xchg instruction with a
memory operand). now the xchg takes place between two registers.
further cleanup to arch/$(ARCH)/syscall.h is planned.
| Rich Felker | 2011-03-19 | 1 | -0/+631 |
| * | various legacy and linux-specific stuff•••this commit is part of an effort to make more of busybox work
out-of-the-box.
| Rich Felker | 2011-03-18 | 1 | -0/+1 |
| * | match dimensions so we can use all slots without invoking OOB-array-access | Rich Felker | 2011-03-11 | 1 | -5/+5 |
| * | fix missing ENOTSUP error code | Rich Felker | 2011-03-11 | 1 | -0/+1 |
| * | make sigaltstack work (missing macros in signal.h, error conditions) | Rich Felker | 2011-03-10 | 1 | -0/+2 |
| * | fill in some missing siginfo stuff in signal.h | Rich Felker | 2011-02-20 | 1 | -5/+56 |
| * | add missing WIFCONTINUED macro and improve WIFSIGNALED | Rich Felker | 2011-02-19 | 1 | -1/+2 |
| * | support the ugly and deprecated ucontext and sigcontext header stuff...•••only the structures, not the functions from ucontext.h, are supported
at this point. the main goal of this commit is to make modern gcc with
dwarf2 unwinding build without errors.
honestly, it probably doesn't matter how we define these as long as
they have members with the right names to prevent errors while
compiling libgcc. the only time they will be used is for propagating
exceptions across signal-handler boundaries, which invokes undefined
behavior anyway. but as-is, they're probably correct and may be useful
to various low-level applications dealing with virtualization, jit
code generation, and so on...
| Rich Felker | 2011-02-18 | 1 | -0/+32 |
| * | reorganize pthread data structures and move the definitions to alltypes.h•••this allows sys/types.h to provide the pthread types, as required by
POSIX. this design also facilitates forcing ABI-compatible sizes in
the arch-specific alltypes.h, while eliminating the need for
developers changing the internals of the pthread types to poke around
with arch-specific headers they may not be able to test.
| Rich Felker | 2011-02-17 | 1 | -0/+15 |
| * | move stdio stuff that's not arch-specific out of bits | Rich Felker | 2011-02-15 | 1 | -10/+0 |
| * | protect some limit constants with feature test macros on x86_64 | Rich Felker | 2011-02-15 | 1 | -1/+3 |
