| Commit message (Expand) | Author | Age | Files | Lines |
|---|
| * | ppc signal/NSIG related fix (warning fix, redefinition) | Rich Felker | 2012-11-21 | 1 | -2/+1 |
| * | add back NSIG, removed from powerpc in last commit, but for all archs•••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.
| Rich Felker | 2012-11-21 | 6 | -0/+12 |
| * | make powerpc signal.h namespace-clean for posix/isoc•••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.
| Rich Felker | 2012-11-21 | 1 | -19/+32 |
| * | fix powerpc types to match abi, and some feature test issues | Rich Felker | 2012-11-21 | 3 | -7/+8 |
| * | fix invalid usage of mcontext_t in powerpc signal.h | rofl0r | 2012-11-21 | 1 | -1/+1 |
| * | fix breakage from introducing bits header for sys/io.h•••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.
| Rich Felker | 2012-11-18 | 6 | -6/+0 |
| * | add port io functions to sys/io.h•••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.
| Rich Felker | 2012-11-18 | 2 | -0/+160 |
| * | add missing const on powerpc FE_DFL_ENV | Rich Felker | 2012-11-18 | 1 | -1/+1 |
| * | fenv support for ppc, untested•••based on code sent to the mailing list by nsz, with minor changes.
| Rich Felker | 2012-11-18 | 1 | -7/+28 |
| * | fcntl.h: O_SEARCH was missing for powerpc•••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.
| rofl0r | 2012-11-18 | 5 | -24/+9 |
| * | ppc socket.h: add forgotten cmsghdr | rofl0r | 2012-11-18 | 1 | -0/+7 |
| * | dynamic linking support for powerpc•••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.
| Rich Felker | 2012-11-16 | 1 | -8/+27 |
| * | fix ppc stat structure definition | Rich Felker | 2012-11-16 | 1 | -4/+3 |
| * | fix powerpc termios.h and ioctl.h | rofl0r | 2012-11-16 | 2 | -192/+232 |
| * | disable SO_REUSEPORT in sys/socket.h•••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.
| Rich Felker | 2012-11-15 | 1 | -1/+1 |
| * | ppc wchar_t is long, not int | Rich Felker | 2012-11-15 | 1 | -1/+1 |
| * | fix powerpc atomic compare-and-swap function•••previous version did not compare at all; it was just a fancy atomic
write. untested. further atomic fixes may be needed.
| Rich Felker | 2012-11-14 | 1 | -6/+7 |
| * | update ppc atomic code to match the endian-agnostic version on other archs | Rich Felker | 2012-11-14 | 1 | -14/+6 |
| * | fix wchar limits mistakenly copied from arm | Rich Felker | 2012-11-14 | 1 | -2/+2 |
| * | PPC port cleaned up, static linking works well now. | rofl0r | 2012-11-13 | 35 | -956/+1025 |
| * | import preliminary ppc work by rdp. | Richard Pennington | 2012-11-13 | 29 | -0/+1971 |
| * | fix numerous mips abi constant definition mismatches | Rich Felker | 2012-11-05 | 3 | -89/+120 |
| * | fix struct stat size/padding on microblaze | Rich Felker | 2012-10-19 | 1 | -1/+2 |
| * | inline syscalls for microblaze | Rich Felker | 2012-10-18 | 1 | -0/+97 |
| * | better support for reverse-endian variants of arm/mips/microblaze•••these macros are supported by more compilers
| Rich Felker | 2012-10-18 | 3 | -0/+12 |
| * | floating point environment/exceptions support for mips | Rich Felker | 2012-10-18 | 1 | -3/+13 |
| * | microblaze TLS relocation support, completely untested | Rich Felker | 2012-10-15 | 1 | -0/+6 |
| * | add support for TLS variant I, presently needed for arm and mips•••despite documentation that makes it sound a lot different, the only
ABI-constraint difference between TLS variants II and I seems to be
that variant II stores the initial TLS segment immediately below the
thread pointer (i.e. the thread pointer points to the end of it) and
variant I stores the initial TLS segment above the thread pointer,
requiring the thread descriptor to be stored below. the actual value
stored in the thread pointer register also tends to have per-arch
random offsets applied to it for silly micro-optimization purposes.
with these changes applied, TLS should be basically working on all
supported archs except microblaze. I'm still working on getting the
necessary information and a working toolchain that can build TLS
binaries for microblaze, but in theory, static-linked programs with
TLS and dynamic-linked programs where only the main executable uses
TLS should already work on microblaze.
alignment constraints have not yet been heavily tested, so it's
possible that this code does not always align TLS segments correctly
on archs that need TLS variant I.
| Rich Felker | 2012-10-15 | 7 | -11/+33 |
| * | ensure pointer decay in inline-asm arg for i386 syscall6•••this is actually a rather subtle issue: do arrays decay to pointers
when used as inline asm args? gcc says yes, but currently pcc says no.
hopefully this discrepency in pcc will be fixed, but since the
behavior is not clearly defined anywhere I can find, I'm using an
explicit operation to cause the decay to occur.
| Rich Felker | 2012-10-13 | 1 | -1/+1 |
| * | i386 vsyscall support (vdso-provided sysenter/syscall instruction based)•••this doubles the performance of the fastest syscalls on the atom I
tested it on; improvement is reportedly much more dramatic on
worst-case cpus. cannot be used for cancellable syscalls.
| Rich Felker | 2012-10-11 | 1 | -66/+7 |
| * | fix incorrect TLS reloc macro names in x86_64 reloc.h | Rich Felker | 2012-10-05 | 1 | -3/+3 |
| * | dynamic-linked TLS support for everything but dlopen'd libs•••currently, only i386 is tested. x86_64 and arm should probably work.
the necessary relocation types for mips and microblaze have not been
added because I don't understand how they're supposed to work, and I'm
not even sure if it's defined yet on microblaze. I may be able to
reverse engineer the requirements out of gcc/binutils output.
| Rich Felker | 2012-10-04 | 5 | -5/+63 |
| * | microblaze port•••based on initial work by rdp, with heavy modifications. some features
including threads are untested because qemu app-level emulation seems
to be broken and I do not have a proper system image for testing.
| Rich Felker | 2012-09-29 | 29 | -0/+1962 |
| * | fix IPC_64 in msgctl too | Rich Felker | 2012-09-22 | 1 | -0/+2 |
| * | fix broken semctl on systems that don't use IPC_64 flag•••not tested on mips and arm; they may still be broken. x86_64 should be
ok now.
| Rich Felker | 2012-09-22 | 3 | -0/+6 |
| * | add O_EXEC open mode•••the linux O_PATH mode provides the necessary semantics for both the
O_SEARCH and O_EXEC modes defined and required by POSIX 2008.
| Rich Felker | 2012-09-15 | 4 | -0/+4 |
| * | fix syscall asm constraints for arm too•••no problems were detected so far, but the constraints seem to have
been invalid just like the mips ones.
| Rich Felker | 2012-09-15 | 1 | -4/+4 |
| * | fix buggy constraints in mips inline syscall asm•••if same register is used for input/output, the compiler must be told.
otherwise is generates random junk code that clobbers the result. in
pure syscall-wrapper functions, nothing went wrong, but in more
complex functions where register allocation is non-trivial, things
broke badly.
| Rich Felker | 2012-09-15 | 1 | -2/+2 |
| * | add O_PATH/O_SEARCH support to fcntl.h•••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.
| Rich Felker | 2012-09-13 | 4 | -0/+8 |
| * | improve mips syscall asm constraints to use immediates, if possible•••by using the "ir" constraint (immediate or register) and the carefully
constructed instruction addu $2,$0,%2 which can take either an
immediate or a register for %2, the new inline asm admits maximal
optimization with no register spillage to the stack when the compiler
successfully performs constant propagration, but still works by
allocating a register when the syscall number cannot be recognized as
a constant. in the case of syscalls with 0-3 arguments it barely
matters, but for 4-argument syscalls, using an immediate for the
syscall number avoids creating a stack frame for the syscall wrapper
function.
| Rich Felker | 2012-09-11 | 1 | -12/+21 |
| * | eliminate assumption that mips syscall restart preserves r25•••all past and current kernel versions have done so, but there seems to
be no reason it's necessary and the sentiment from everyone I've asked
has been that we should not rely on it. instead, use r7 (an argument
register) which will necessarily be preserved upon syscall restart.
however this only works for 0-3 argument syscalls, and we have to
resort to the function call for 4-argument syscalls.
| Rich Felker | 2012-09-10 | 1 | -23/+12 |
| * | inline syscall support for arm•••most pure-syscall-wrapper functions compile to the smallest/simplest
code possible (save r7 ; load syscall # ; svc 0 ; restore r7 ; tail
call to __syscall_ret).
| Rich Felker | 2012-09-09 | 1 | -0/+53 |
| * | inline syscall support for mips•••this drastically reduces the size of some functions which are purely
syscall wrappers.
disabled for clang due to known bugs satisfying register constraints.
| Rich Felker | 2012-09-09 | 1 | -0/+57 |
| * | syscall organization overhaul•••now public syscall.h only exposes __NR_* and SYS_* constants and the
variadic syscall function. no macros or inline functions, no
__syscall_ret or other internal details, no 16-/32-bit legacy syscall
renaming, etc. this logic has all been moved to src/internal/syscall.h
with the arch-specific parts in arch/$(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.
| Rich Felker | 2012-09-08 | 8 | -632/+282 |
| * | add acct, accept4, setns, and dup3 syscalls (linux extensions)•••based on patch by Justin Cormack
| Rich Felker | 2012-09-08 | 1 | -0/+3 |
| * | add clang-compatible thread-pointer code for mips•••clang does not presently support the "v" constraint we want to use to
get the result from $3, and trying to use register...__asm__("$3") to
do the same invokes serious compiler bugs. so for now, i'm working
around the issue with an extra temp register and putting $3 in the
clobber list instead of using it as output. when the bugs in clang are
fixed, this issue should be revisited to generate smaller/faster code
like what gcc gets.
| Rich Felker | 2012-09-07 | 1 | -0/+4 |
| * | avoid "inline" in public headers for strict c89 compatibility•••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.
| Rich Felker | 2012-09-02 | 4 | -35/+35 |
| * | avoid need for -march=mips2 to compile mips atomic.h asm•••linux guarantees ll/sc are always available. on mips1, they will be
emulated by the kernel. thus they are part of the linux mips1 abi and
safe to use.
| Rich Felker | 2012-08-11 | 1 | -0/+8 |
| * | use int instead of long for ptrdiff_t on all 32-bit archs•••this is needed to match the underlying "ABI" standards. it's not
really an ABI issue since the binary representations are the same, but
having the wrong type can lead to errors when the type arising from a
difference-of-pointers expression does not match the defined type of
ptrdiff_t. most of the problems affect C++, not C.
| Rich Felker | 2012-08-10 | 2 | -2/+2 |
| * | fix incorrect ptrdiff_t type on mips | Rich Felker | 2012-08-10 | 1 | -1/+1 |
