| Commit message (Expand) | Author | Age | Files | Lines |
|---|
| * | fix incorrect ptrdiff_t type on mips | Rich Felker | 2012-08-10 | 1 | -1/+1 |
| * | add defines for number of sigset_t bytes syscalls expect•••yet another gratuitous mips incompatibility...
| Rich Felker | 2012-08-09 | 4 | -0/+8 |
| * | further fixes for mips ioctl.h header•••untested; hopefully it's right now
| Rich Felker | 2012-08-07 | 1 | -4/+4 |
| * | fix another mips gratuitous-incompatibility bug: ioctl numbers | Rich Felker | 2012-08-07 | 1 | -2/+2 |
| * | fix socket.h on mips•••why does mips have to be gratuitously incompatible in every possible
imaginable way?
| Rich Felker | 2012-08-05 | 1 | -0/+3 |
| * | more stuff lost committing mips dynamic linker | Rich Felker | 2012-08-05 | 1 | -2/+2 |
| * | mips dynamic linker support•••not heavily tested, but the basics are working. the basic concept is
that the dynamic linker entry point code invokes a pure-PIC (no global
accesses) C function in reloc.h to perform the early GOT relocations
needed to make the dynamic linker itself functional, then invokes
__dynlink like on other archs. since mips uses some ugly arch-specific
hacks to optimize relocating the GOT (rather than just using the
normal DT_REL[A] tables like on other archs), the dynamic linker has
been modified slightly to support calling arch-specific relocation
code in reloc.h.
most of the actual mips-specific behavior was developed by reading the
output of readelf on libc.so and simple executable files. i could not
find good reference information on which relocation types need to be
supported or their semantics, so it's possible that some legitimate
usage cases will not work yet.
| Rich Felker | 2012-08-05 | 1 | -3/+53 |
| * | add floating point register saving/restoring to mips setjmp/longjmp•••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.
| Rich Felker | 2012-07-22 | 1 | -1/+1 |
| * | fix broken mips a_fetch_add•••sc was overwriting the result
| Rich Felker | 2012-07-12 | 1 | -7/+7 |
| * | mipsel (little endian) support•••the fields in the mcontext_t are long long (for no good reason) even
on 32-bit mips, so the offset of the instruction pointer (as a word)
varies depending on endianness.
| Rich Felker | 2012-07-12 | 1 | -1/+1 |
| * | workaround another sendmsg kernel bug on 64-bit machines•••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.
| Rich Felker | 2012-07-12 | 4 | -0/+29 |
| * | fix redef of sigprocmask constants on mips•••this fix is easier than trying to reorder the header stuff
| Rich Felker | 2012-07-12 | 1 | -0/+3 |
| * | more mips bits-header fixes•••signal handling was very broken because of this
| Rich Felker | 2012-07-12 | 1 | -2/+6 |
| * | fix mips syscalls with long long args•••like arm, mips requires 64-bit arguments to be "aligned" on an even
register boundary.
| Rich Felker | 2012-07-12 | 1 | -1/+1 |
| * | fix mips mcontext_t structure size•••otherwise offs in ucontext_t will be wrong, and break code that
inspects or modifies the signal makes (including cancellation code).
| Rich Felker | 2012-07-12 | 1 | -1/+5 |
| * | fix MAP_ANONYMOUS value for mips, remove cruft copied from i386 | Rich Felker | 2012-07-11 | 1 | -2/+1 |
| * | initial version of mips (o32) port, based on work by Richard Pennington (rdp)•••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.
| Rich Felker | 2012-07-11 | 29 | -0/+2037 |
| * | support -mfpmath=387 on x86_64•••apparently somebody wants this for something... and it doesn't hurt.
| Rich Felker | 2012-07-10 | 1 | -0/+4 |
| * | fix wrong value of FLT_EVAL_METHOD for x86_64 | Rich Felker | 2012-07-10 | 1 | -1/+1 |
| * | make arm syscalls (still non-inline) more efficient•••no need to pass zero for unused arguments; just omit them.
| Rich Felker | 2012-07-08 | 1 | -6/+6 |
| * | remove little-endian assumption from arm atomic.h•••this hidden endian dependency had left big endian arm badly broken.
| Rich Felker | 2012-07-08 | 1 | -4/+6 |
| * | jmp_buf overhaul fixing several issues•••on arm, the location of the saved-signal-mask flag and mask were off
by one between sigsetjmp and siglongjmp, causing incorrect behavior
restoring the signal mask. this is because the siglongjmp code assumed
an extra slot was in the non-sig jmp_buf for the flag, but arm did not
have this. now, the extra slot is removed for all archs since it was
useless.
also, arm eabi requires jmp_buf to have 8-byte alignment. we achieve
that using long long as the type rather than with non-portable gcc
attribute tags.
| Rich Felker | 2012-07-03 | 3 | -3/+3 |
| * | update syscall defs to latest kernel ones•••patch submitted by Kristian L. <email@thexception.net>
| Rich Felker | 2012-06-23 | 3 | -0/+38 |
| * | proper error handling for fcntl F_GETOWN on modern kernels•••on old kernels, there's no way to detect errors; we must assume
negative syscall return values are pgrp ids. but if the F_GETOWN_EX
fcntl works, we can get a reliable answer.
| Rich Felker | 2012-06-20 | 3 | -0/+9 |
| * | fix arm syscall.h to reflect which syscalls actually exist (on EABI) | Rich Felker | 2012-05-24 | 1 | -22/+0 |
| * | fix missing _BSD_SOURCE support in bits/*.h•••this is actually rather ugly, and would get even uglier if we ever
want to support further feature test macros. at some point i may
factor the bits headers into separate files for C base, POSIX base,
and nonstandard extensions (the only distinctions that seem to matter
now) and then the logic for which to include can go in the main header
rather than being duplicated for each arch. the downside of this is
that it would result in more files having to be opened during
compilation, so as long as the ugliness does not grow, i'm inclined to
leave it alone for now.
| Rich Felker | 2012-05-22 | 9 | -12/+12 |
| * | fix float_t and double_t defs on x86 when -mfpmath=sse -msse2 is used | Rich Felker | 2012-04-29 | 1 | -0/+5 |
| * | support FLT_EVAL_METHOD changing on x86 with gcc -msse2 -mfpmath=sse•••if the compiler provides a value, use it; otherwise fallback to the
platform default (2).
| Rich Felker | 2012-04-27 | 1 | -0/+4 |
| * | use signed char rather than plain char for int8_t•••otherwise this BADLY breaks if -funsigned-char is passed to gcc
| Rich Felker | 2012-04-24 | 3 | -12/+12 |
| * | move F_DUPFD_CLOEXEC out of bits•••fcntl values 1024 and up are universal, arch-independent. later I'll
add some of the other linux-specific ones for notify, leases, pipe
size, etc. here too.
| Rich Felker | 2012-04-15 | 3 | -6/+0 |
| * | add F_SETSIG and F_GETSIG (linux specific) to fcntl.h•••F_* is in the reserved namespace so no feature test is needed
| Rich Felker | 2012-04-15 | 3 | -0/+6 |
| * | work around nasty gcc bug in the i386 syscall asm•••when the "r" (register) constraint is used to let gcc choose a
register, gcc will sometimes assign the same register that was used
for one of the other fixed-register operands, if it knows the values
are the same. one common case is multiple zero arguments to a syscall.
this horribly breaks the intended usage, which is swapping the GOT
pointer from ebx into the temp register and back to perform the
syscall.
presumably there is a way to fix this with advanced usage of register
constaints on the inline asm, but having bad memories about hellish
compatibility issues with different gcc versions, for the time being
i'm just going to hard-code specific registers to be used. this may
hurt the compiler's ability to optimize, but it will fix serious
miscompilation issues.
so far the only function i know what compiled incorrectly is
getrlimit.c, and naturally the bug only applies to shared (PIC)
builds, but it may be more extensive and may have gone undetected..
| Rich Felker | 2012-04-04 | 1 | -4/+4 |
| * | fix DECIMAL_DIG definitions•••DECIMAL_DIG is not the same as LDBL_DIG
type_DIG is the maximimum number of decimal digits that can survive a
round trip from decimal to type and back to decimal.
DECIMAL_DIG is the minimum number of decimal digits required in order
for any floating point type to survive the round trip to decimal and
back, and it is generally larger than LDBL_DIG. since the exact
formula is non-trivial, and defining it larger than necessary may be
legal but wasteful, just define the right value in bits/float.h.
| Rich Felker | 2012-03-21 | 3 | -0/+6 |
| * | use __attribute__((const)) on arm __pthread_self function | Rich Felker | 2012-02-25 | 1 | -1/+3 |
| * | add float_t and double_t to math.h | Rich Felker | 2012-02-15 | 3 | -0/+9 |
| * | 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 | 3 | -37/+0 |
| * | add prlimit syscall wrapper | Rich Felker | 2012-01-20 | 1 | -0/+2 |
| * | fix some details in ugly stuff that doesn't belong in libc•••patches by sh4rm4, presumably needed to make gdb or some similar junk
happy...
| Rich Felker | 2011-10-17 | 1 | -6/+6 |
| * | 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 | 3 | -0/+6 |
| * | fix fcntl O_* flags for arm•••no idea why these 4 are permuted and the rest are standard/generic
| Rich Felker | 2011-10-05 | 1 | -4/+4 |
| * | typo (copy 2) in arm reloc.h | Rich Felker | 2011-10-01 | 1 | -1/+1 |
| * | typo in arm reloc.h | Rich Felker | 2011-10-01 | 1 | -1/+1 |
| * | first attempt at arm dynamic linking | Rich Felker | 2011-10-01 | 1 | -0/+26 |
| * | "optimize" arm __pthread_self•••actually this is just to avoid gcc being stupid and refusing to inline
the function version, even when the size cost is essentially identical
whether it's inlined or not.
| Rich Felker | 2011-09-22 | 1 | -4/+1 |
| * | fix x86_64 user.h (previously was just a copy of i386) | Rich Felker | 2011-09-22 | 1 | -48/+13 |
| * | cleanup/debloat i386 user.h | Rich Felker | 2011-09-22 | 1 | -43/+11 |
| * | 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 | 3 | -3/+6 |
| * | 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 | 3 | -44/+18 |
| * | cleanup redundancy in bits/signal.h versions | Rich Felker | 2011-09-19 | 3 | -372/+31 |
