| Commit message (Expand) | Author | Files | Lines |
|---|
| 2016-01-24 | add MS_LAZYTIME mount option to sys/mount.h•••new in linux 4.0 commit 0ae45f63d4ef8d8eeec49c7d8b44a1775fff13e8,
used to update atime/mtime/ctime only in memory when possible.
| Szabolcs Nagy | 1 | -1/+2 |
| 2016-01-24 | add AF_MPLS (PF_MPLS) address family to socket.h•••new in linux 4.0 commit 0189197f441602acdca3f97750d392a895b778fd.
| Szabolcs Nagy | 1 | -0/+2 |
| 2016-01-24 | add MSG_FASTOPEN sendmsg/sendto flag to socket.h•••This was new in linux 3.5 in commit cf60af03ca4e71134206809ea892e49b92a88896,
needed for tcp fastopen feature (sending data in TCP SYN packet).
| Szabolcs Nagy | 1 | -0/+1 |
| 2016-01-24 | clean powerpc syscall.h•••remove ifdefs for powerpc64.
| Szabolcs Nagy | 1 | -24/+0 |
| 2016-01-24 | add missing powerpc specific PROT_SAO memory protection flag•••this flag for strong access ordering was added in linux v2.6.27
commit aba46c5027cb59d98052231b36efcbbde9c77a1d
| Szabolcs Nagy | 1 | -0/+1 |
| 2016-01-24 | fix powerpc MCL_* mlockall flags in bits/mman.h•••the definitions didn't match the linux uapi headers.
| Szabolcs Nagy | 1 | -2/+2 |
| 2016-01-24 | fix aarch64 atomics to load/store 32bit only•••a_ll/a_sc inline asm used 64bit register operands (%0) instead of 32bit
ones (%w0), this at least broke a_and_64 (which always cleared the top
32bit, leaking memory in malloc).
| Szabolcs Nagy | 1 | -2/+2 |
| 2016-01-23 | improve aarch64 atomics•••aarch64 provides ll/sc variants with acquire/release memory order,
freeing us from the need to have full barriers both before and after
the ll/sc operation. previously they were not used because the a_cas
can fail without performing a_sc, in which case half of the barrier
would be omitted. instead, define a custom version of a_cas for
aarch64 which uses a_barrier explicitly when aborting the cas
operation. aside from cas, other operations built on top of ll/sc are
not affected since they never abort but rather loop until they
succeed.
a split ll/sc version of the pointer-sized a_cas_p is also introduced
using the same technique.
patch by Szabolcs Nagy.
| Rich Felker | 1 | -16/+36 |
| 2016-01-22 | add arch/abi info to dynamic linker's id/version output | Rich Felker | 1 | -1/+1 |
| 2016-01-22 | remove arch/$(ARCH)/src from the build system•••the files that used to come from extra src dirs under the arch dir
have all been removed or moved to appropriate places under the main
src tree.
| Rich Felker | 1 | -1/+1 |
| 2016-01-22 | remove sh port's __fpscr_values source file•••commit f3ddd173806fd5c60b3f034528ca24542aecc5b9, the dynamic linker
bootstrap overhaul, silently disabled the definition of __fpscr_values
in this file since libc.so's copy of __fpscr_values now comes from
crt_arch.h, the same place the public definition in the main program's
crt1.o ultimately comes from. remove this file which is no longer in
use.
| Rich Felker | 1 | -5/+0 |
| 2016-01-22 | move sh port's __shcall internal function from arch/sh/src to src tree | Rich Felker | 1 | -0/+0 |
| 2016-01-22 | move sh __unmapself code from arch/sh/src to main src tree | Rich Felker | 2 | -1/+1 |
| 2016-01-22 | move x32 sysinfo impl and syscall fixup code out of arch/x32/src•••all such arch-specific translation units are being moved to
appropriate arch dirs under the main src tree.
| Rich Felker | 3 | -1/+0 |
| 2016-01-22 | overhaul powerpc atomics for new atomics framework•••previously powerpc had a_cas defined in terms of its native ll/sc
style operations, but all other atomics were defined in terms of
a_cas. instead define a_ll and a_sc so the compiler can generate
optimized versions of all the atomic ops and perform better inlining
of a_cas.
extracting the result of the sc (stwcx.) instruction is rather awkward
because it's natively stored in a condition flag, which is not
representable in inline asm. but even with this limitation the new
code still seems significantly better.
| Rich Felker | 1 | -13/+37 |
| 2016-01-22 | clean up x86_64 (and x32) atomics for new atomics framework•••this commit mostly makes consistent things like spacing, function
ordering in atomic_arch.h, argument names, use of volatile, etc.
a_ctz_l was also removed from x86_64 since atomic.h provides it
automatically using a_ctz_64.
| Rich Felker | 2 | -113/+130 |
| 2016-01-22 | clean up i386 atomics for new atomics framework•••this commit mostly makes consistent things like spacing, function
ordering in atomic_arch.h, argument names, use of volatile, etc. the
fake 64-bit and/or atomics are also removed because the shared
atomic.h does a better job of implementing them; it avoids making two
atomic memory accesses when only one 32-bit half needs to be touched.
no major overhaul is needed or possible because x86 actually has
native versions of all the usual atomic operations, rather than using
ll/sc or needing cas loops.
| Rich Felker | 1 | -66/+58 |
| 2016-01-22 | overhaul mips atomics for new atomics framework | Rich Felker | 1 | -53/+31 |
| 2016-01-22 | move arm-specific translation units out of arch/arm/src, to src/*/arm•••this is possible with the new build system that allows src/*/$(ARCH)/*
files which do not shadow a file in the parent directory, and yields a
more logical organization. eventually it will be possible to remove
arch/*/src from the build system.
| Rich Felker | 9 | -1/+0 |
| 2016-01-21 | overhaul arm atomics for new atomics framework•••switch to ll/sc model so that new atomic.h can provide optimized
versions of all the atomic primitives without needing an ll/sc loop
written in asm for each one.
all isa levels which use ldrex/strex now use the inline ll/sc model
even if the type of barrier to use is not known until runtime (v6).
the cas model is only used for arm v5 and earlier, and it has been
optimized to make the call via inline asm with custom constraints
rather than as a C function call.
| Rich Felker | 1 | -142/+38 |
| 2016-01-21 | overhaul aarch64 atomics for new atomics framework | Rich Felker | 1 | -174/+25 |
| 2016-01-21 | overhaul sh atomics for new atomics framework, add j-core cas.l backend•••sh needs runtime-selected atomic backends since there are a number of
supported models that use non-forwards-compatible (non-smp-compatible)
atomic mechanisms. previously, the code paths for this were highly
inefficient since they involved C function calls with multiple
branches in the callee and heavy spills in the caller. the new code
performs calls the runtime-selected asm fragment from inline asm with
extremely minimal clobbers, rather than using a function call.
for the sh4a case where the atomic mechanism is known and there is no
forward-compatibility issue, the movli.l and movco.l instructions are
provided as a_ll and a_sc, allowing the new shared atomic.h to
generate efficient inline versions of all the basic atomic operations
without needing a cas loop.
| Rich Felker | 6 | -262/+110 |
| 2016-01-21 | refactor internal atomic.h•••rather than having each arch provide its own atomic.h, there is a new
shared atomic.h in src/internal which pulls arch-specific definitions
from arc/$(ARCH)/atomic_arch.h. the latter can be extremely minimal,
defining only a_cas or new ll/sc type primitives which the shared
atomic.h will use to construct everything else.
this commit avoids making heavy changes to the individual archs'
atomic implementations. definitions which are identical or
near-identical to what the new shared atomic.h would produce have been
removed, but otherwise the changes made are just hooking up the
arch-specific files to the new infrastructure. major changes to take
advantage of the new system will come in subsequent commits.
| Rich Felker | 15 | -834/+491 |
| 2016-01-20 | fix global visibility (vis.h) support for out-of-tree builds•••commit 2f853dd6b9a95d5b13ee8f9df762125e0588df5d failed to change the
test for -include vis.h support to use $srcdir, so vis.h was always
disabled by configure for out-of-tree builds.
| Rich Felker | 1 | -1/+1 |
| 2016-01-20 | exclude vis.h when compiling assembly files•••otherwise C declarations are included into preprocessed (.S) asm
source files, producing errors from the assembler.
| Khem Raj | 1 | -1/+1 |
| 2016-01-20 | simplify "make clean" and remove unneeded lib dir from tree•••the lib dir is automatically created if needed by the out-of-tree
build logic, and now that all generated files are in obj and lib,
deleting them is much simpler. using "rm -rf" is also more thorough,
as it picks up object files that were left around from source files
that no longer exist or which are no longer to be used because an
arch-specific replacement file was added or removed.
| Rich Felker | 2 | -7/+1 |
| 2016-01-20 | deduplicate compiler invocation command line in makefile•••also clean up duplication of CFLAGS passing to assembler.
| Rich Felker | 1 | -7/+9 |
| 2016-01-20 | remove outdated/incorrect comment about AS_CMD from makefile | Rich Felker | 1 | -1/+0 |
| 2016-01-20 | remove support for subarch .sub files from the makefile•••as of commit af21a82ccc8687aa16e85def7db95efeae4cf72e, .sub files are
no longer in use. removing the makefile machinery to handle them not
only cleans up and simplifies the makefile, but also significantly
reduces make's startup time.
| Rich Felker | 1 | -16/+2 |
| 2016-01-20 | fix build regression for arm pre-v7 from out-of-tree build patch•••commit 2f853dd6b9a95d5b13ee8f9df762125e0588df5d failed to replicate
the old makefile logic that caused arch/arm/src/arm/atomics.s to be
built. since this was the only .s file under arch/*/src, rather than
trying to reproduce the old logic, I'm just moving it up a level and
adjusting the glob pattern in the makefile to catch it. eventually
arch/*/src will probably be removed in favor of moving all these files
to appropriate src/*/$(ARCH) locations.
| Rich Felker | 3 | -1/+1 |
| 2016-01-20 | switch arm, sh, and mips fenv asm from .sub system to .S files | Rich Felker | 12 | -6/+21 |
| 2016-01-20 | switch sh and mips setjmp asm from .sub system to .S files | Rich Felker | 20 | -109/+12 |
| 2016-01-20 | fix dynamic linker path file selection for arm vs armhf•••the __SOFTFP__ macro which was wrongly being used does not reflect the
ABI (arm vs armhf) but just the availability of floating point
instructions/registers, so -mfloat-abi=softfp was wrongly being
treated as armhf. __ARM_PCS_VFP is the correct predefined macro to
check for the armhf EABI variant. this macro usage was corrected for
the build process in commit 4918c2bb206bfaaf5a1f7d3448c2f63d5e2b7d56
but reloc.h was apparently overlooked at the time.
| Rich Felker | 1 | -3/+3 |
| 2016-01-20 | replace armhf math asm source files with inline asm•••this makes it possible to inline them with LTO, and is the simplest
approach to eliminating the use of .sub files.
this also makes VFP sqrt available for use with the standard EABI
(plain arm rather than armhf subarch) when libc is built with
-mfloat-abi=softfp. the same could have been done for fabs, but when
the argument and return value are in integer registers, moving to VFP
registers and back is almost certainly more costly than a simple
integer operation.
| Rich Felker | 16 | -40/+60 |
| 2016-01-20 | adapt build of arm memcpy asm not to use .sub files•••this depends on commit 9f5eb77992b42d484d69e879d24ef86466f20f21, which
made it possible to use a .c file for arch-specific replacements, and on
commit 2f853dd6b9a95d5b13ee8f9df762125e0588df5d, the out-of-tree build
support, which made it so that src/*/$(ARCH)/* 'replacement' files get
used even if they don't match the base name of a .c file in the parent
directory.
| Rich Felker | 4 | -2/+7 |
| 2016-01-19 | eliminate separate static/shared CFLAGS vars in makefile•••this allows the rules for .o and .lo files to be identical, with -fPIC
and -DSHARED added for .lo files via target-specific variable append.
this is arguably cleaner now and will allow more cleanup and removal
of redundant rule bodies after other prerequisite changes are made.
| Rich Felker | 1 | -13/+13 |
| 2016-01-19 | add support for arch-provided replacement files as .c or .S•••previously, replacement files provided in $(ARCH) dirs under src/ had
to be .s files. in order to replace a file with C source, an empty .s
file was needed there to suppress the original file, and a separate .c
file was needed in arch/$(ARCH)/src/.
support for .S is new and is aimed at short-term use eliminating .sub
files. asm source files are still expected not to make any heavy
preprocessor use, just simple conditionals on subarch. eventually most
affected files may be replaced with C source files with minimal inline
asm instead of asm source files.
| Rich Felker | 1 | -3/+9 |
| 2016-01-17 | netinet/tcp: Add TCPOPT, TCPOLEN constants•••Programs such as iptables depend on these constants, which can also
be found defined in other libcs.
Since only TCP_* is reserved as part of tcp.h's namespace, we hide
them behind _BSD_SOURCE (and therefore _DEFAULT_SOURCE) to expose
them by default, but keep it standard conforming.
| Kylie McClain | 1 | -0/+13 |
| 2016-01-17 | fix if_nametoindex return value when socket open fails•••The return value of if_nametoindex is unsigned; it should return 0
on error.
| Ron Yorston | 1 | -1/+1 |
| 2016-01-17 | support out-of-tree build•••this change adds support for building musl outside of the source
tree. the implementation is similar to autotools where running
configure in a different directory creates config.mak in the current
working directory and symlinks the makefile, which contains the
logic for creating all necessary directories and resolving paths
relative to the source directory.
to support both in-tree and out-of-tree builds with implicit make
rules, all object files are now placed into a separate directory.
| Petr Hosek | 3 | -60/+101 |
| 2016-01-06 | add missing protocols to protoent lookup functions | Timo Teräs | 1 | -1/+16 |
| 2015-12-29 | adjust mips crt_arch entry point asm to avoid assembler bugs•••apparently the .gpword directive does not work reliably with local
text labels; values produced were offset by 64k from the correct
value, resulting in incorrect computation of the got pointer at
runtime. instead, use an external label so that the assembler does not
munge the relocation; the linker will then get it right.
commit 6fef8cafbd0f6f185897bc87feb1ff66e2e204e1 exposed this issue by
removing the old, non-PIE-compatible handwritten crt1.s, which was not
affected. presumably mips PIE executables (using Scrt1.o produced from
crt_arch.h) were already affected at the time.
| Rich Felker | 1 | -1/+4 |
| 2015-12-29 | adjust i386 max_align_t definition to work around some broken compilers•••at least gcc 4.7 claims c++11 support but does not accept the alignas
keyword, causing breakage when stddef.h is included in c++11 mode.
instead, prefer using __attribute__((__aligned__)) on any compiler
with GNU extensions, and only use the alignas keyword as a fallback
for other C++ compilers.
C code should not be affected by this patch.
| Rich Felker | 1 | -3/+5 |
| 2015-12-20 | fix overly pessimistic realloc strategy in getdelim•••previously, getdelim was allocating twice the space needed every time
it expanded its buffer to implement exponential buffer growth (in
order to avoid quadratic run time). however, this doubling was
performed even when the final buffer length needed was already known,
which is the common case that occurs whenever the delimiter is in the
FILE's buffer.
this patch makes two changes to remedy the situation:
1. over-allocation is no longer performed if the delimiter has already
been found when realloc is needed.
2. growth factor is reduced from 2x to 1.5x to reduce the relative
excess allocation in cases where the delimiter is not initially in the
buffer, including unbuffered streams.
in theory these changes could lead to quadratic time if the same
buffer is reused to process a sequence of lines successively
increasing in length, but once this length exceeds the stdio buffer
size, the delimiter will not be found in the buffer right away and
exponential growth will still kick in.
| Rich Felker | 1 | -1/+1 |
| 2015-12-19 | avoid updating caller's size when getdelim fails to realloc•••getdelim was updating *n, the caller's stored buffer size, before
calling realloc. if getdelim then failed due to realloc failure, the
caller would see in *n a value larger than the actual size of the
allocated block, and use of that value is unsafe. in particular,
passing it again to getdelim is unsafe.
now, temporary storage is used for the desired new size, and *n is not
written until realloc succeeds.
| Rich Felker | 1 | -5/+6 |
| 2015-12-15 | fix crash when signal number 0 is passed to sigaction•••this error case was overlooked in the old range checking logic. new
check is moved out of __libc_sigaction to the public wrapper in order
to unify the error path and reduce code size.
| Rich Felker | 1 | -5/+1 |
| 2015-12-15 | remove visibility suppression by SHARED macro in mips and x32 arch files•••commit 8a8fdf6398b85c99dffb237e47fa577e2ddc9e77 was intended to remove
all such usage, but these arch-specific files were overlooked, leading
to inconsistent declarations and definitions.
| Rich Felker | 2 | -6/+0 |
| 2015-12-08 | fix tsearch, tfind, tdelete to handle null pointer input•••POSIX specifies the behaviour for null rootp input, but it
was not implemented correctly.
| Szabolcs Nagy | 1 | -0/+6 |
| 2015-12-08 | tsearch code cleanup•••changed the insertion method to simplify the recursion logic and
reduce code size a bit.
| Szabolcs Nagy | 1 | -24/+28 |
| 2015-12-08 | fix tsearch to avoid crash on oom•••malloc failure was not properly propagated in the insertion method
which led to null pointer dereference.
| Szabolcs Nagy | 1 | -1/+1 |
