+++ /dev/null
-commit 3975577922aedab7d60788dd320a2c8e4e94bc6e
-Author: Roman Yeryomin <roman@ubnt.com>
-Date: Thu Jul 2 12:29:00 2015 +0300
-
- socket.h: cleanup/reorder mips and powerpc bits/socket.h
-
- ....to be somewhat consistent and easily comparable with asm/socket.h
-
- Signed-off-by: Roman Yeryomin <roman@ubnt.com>
-
-commit 29ec7677a73a5227badbb1064205be09e707e466
-Author: Roman Yeryomin <roman@ubnt.com>
-Date: Thu Jul 2 12:28:41 2015 +0300
-
- socket.h: fix SO_* for mips
-
- Signed-off-by: Roman Yeryomin <roman@ubnt.com>
-
-commit 3fffa7a658aa925b8f95d36aef7531c1827dbf28
-Author: Felix Fietkau <nbd@openwrt.org>
-Date: Tue Jul 21 15:01:25 2015 +0200
-
- mips: fix mcontext_t register array field name
-
- glibc and uclibc use gregs instead of regs
-
- Signed-off-by: Felix Fietkau <nbd@openwrt.org>
-
-commit 0f9c2666aca95eb98eb0ef4f4d8d1473c8ce3fa0
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Thu Jul 9 18:36:02 2015 +0000
-
- handle loss of syslog socket connection
-
- when traditional syslogd implementations are restarted, the old server
- socket ceases to exist and a new unix socket with the same pathname is
- created. when this happens, the default destination address associated
- with the client socket via connect is no longer valid, and attempts to
- send produce errors. this happens despite the socket being datagram
- type, and is in contrast to the behavior that would be seen with an IP
- datagram (UDP) socket.
-
- in order to avoid a situation where the application is unable to send
- further syslog messages without calling closelog, this patch makes
- syslog attempt to reconnect the socket when send returns an error
- indicating a lost connection.
-
- additionally, initial failure to connect the socket no longer results
- in the socket being closed. this ensures that an application which
- calls openlog to reserve the socket file descriptor will not run into
- a situation where transient connection failure (e.g. due to syslogd
- restart) prevents fd reservation. however, applications which may be
- unable to connect the socket later (e.g. due to chroot, restricted
- permissions, seccomp, etc.) will still fail to log if the syslog
- socket cannot be connected at openlog time or if it has to be
- reconnected later.
-
-commit 11894f6d3a80be950a490dc7dfab349f057a545f
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Thu Jul 9 17:07:35 2015 +0000
-
- fix incorrect void return type for syncfs function
-
- being nonstandard, the closest thing to a specification for this
- function is its man page, which documents it as returning int. it can
- fail with EBADF if the file descriptor passed is invalid.
-
-commit e8cbe0bad4284906230a53af4c91ad2b9713d03b
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Wed Jul 8 02:46:45 2015 +0000
-
- fix negated return value of ns_skiprr, breakage in related functions
-
- due to a reversed pointer difference computation, ns_skiprr always
- returned a negative value, which functions using it would interpret as
- an error.
-
- patch by Yu Lu.
-
-commit fb58545f8d1c5fa32122244caeaf3625c12ddc01
-Author: Shiz <hi@shiz.me>
-Date: Sun Jun 28 23:08:21 2015 +0200
-
- add musl-clang, a wrapper for system clang installs
-
- musl-clang allows the user to compile musl-powered programs using their
- already existent clang install, without the need of a special cross compiler.
- it achieves this by wrapping around both the system clang install and the
- linker and passing them special flags to re-target musl at runtime.
- it does only affect invocations done through the special musl-clang wrapper
- script, so that the user setup remains fully intact otherwise.
-
- the clang wrapper consists of the compiler frontend wrapper script,
- musl-clang, and the linker wrapper script, ld.musl-clang.
- musl-clang makes sure clang invokes ld.musl-clang to link objects; neither
- script needs to be in PATH for the wrapper to work.
-
-commit f8db6f74b2c74a50c4dec7e30be5215f0e2c37a6
-Author: Shiz <hi@shiz.me>
-Date: Sun Jun 28 23:08:20 2015 +0200
-
- build: fix musl-targeting toolchain test
-
- the old test was broken in that it would never fail on a toolchains built
- without dynamic linking support, leading to the wrapper script possibly being
- installed on compilers that do not support it. in addition, the new test is
- portable across compilers: the old test only worked on GCC.
-
- the new test works by testing whether the toolchain libc defines __GLIBC__:
- most non-musl Linux libc's do define this for compatibility even when they
- are not glibc, so this is a safe bet to check for musl. in addition, the
- compiler runtime would need to have a somewhat glibc-compatible ABI in the
- first place, so any non-glibc compatible libc's compiler runtime might not
- work. it is safer to disable these cases by default and have the user enable
- the wrappers manually there using --enable-wrapper if they certain it works.
-
-commit b3cd7d13fe630ba1847326242525298e361018c1
-Author: Shiz <hi@shiz.me>
-Date: Sun Jun 28 23:08:19 2015 +0200
-
- build: overhaul wrapper script system for multiple wrapper support
-
- this overhauls part of the build system in order to support multiple
- toolchain wrapper scripts, as opposed to solely the musl-gcc wrapper as
- before. it thereby replaces --enable-gcc-wrapper with --enable-wrapper=...,
- which has the options 'auto' (the default, detect whether to use wrappers),
- 'all' (build and install all wrappers), 'no' (don't build any) and finally
- the options named after the individual compiler scripts (currently only
- 'gcc' is available) to build and install only that wrapper.
- the old --enable-gcc-wrapper is removed from --help, but still available.
-
- it also modifies the wrappers to use the C compiler specified to the build
- system as 'inner' compiler, when applicable. as wrapper detection works by
- probing this compiler, it may not work with any other.
-
-commit 2a780aa3050b86d888489361f04220bfb58890a1
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Mon Jul 6 22:13:11 2015 +0000
-
- treat empty TZ environment variable as GMT rather than default
-
- this improves compatibility with the behavior of other systems and
- with some applications which set an empty TZ var to disable use of
- local time by mktime, etc.
-
-commit 8f08a58c635bea5cdfae6bc0e323c80aa9ff82a7
-Author: Alexander Monakov <amonakov@ispras.ru>
-Date: Sun Jun 28 02:48:33 2015 +0300
-
- dynlink.c: pass gnu-hash table pointer to gnu_lookup
-
- The callers need to check the value of the pointer anyway, so make
- them pass the pointer to gnu_lookup instead of reloading it there.
-
- Reorder gnu_lookup arguments so that always-used ones are listed
- first. GCC can choose a calling convention with arguments in registers
- (e.g. up to 3 arguments in eax, ecx, edx on x86), but cannot reorder
- the arguments for static functions.
-
-commit 5b4286e12cd6baac343b10a41dc17ac578832089
-Author: Alexander Monakov <amonakov@ispras.ru>
-Date: Sun Jun 28 02:48:32 2015 +0300
-
- dynlink.c: slim down gnu_lookup
-
- Do not reference dso->syms and dso->strings until point of use.
- Check 'h1 == (h2|1)', the simplest condition, before the others.
-
-commit 84389c64562e2b2ba43225b5b7a9df7d974479b1
-Author: Alexander Monakov <amonakov@ispras.ru>
-Date: Sun Jun 28 02:48:31 2015 +0300
-
- dynlink.c: use bloom filter in gnu hash lookup
-
- Introduce gnu_lookup_filtered and use it to speed up symbol lookups in
- find_sym (do_dlsym is left as is, based on an expectation that
- frequently dlsym queries will use a dlopen handle rather than
- RTLD_NEXT or RTLD_DEFAULT, and will not need to look at more than one
- DSO).
-
-commit 66d45787c865a1807ae397a89a14699394ed4fa4
-Author: Alexander Monakov <amonakov@ispras.ru>
-Date: Sun Jun 28 02:48:30 2015 +0300
-
- dynlink.c: use a faster expression in gnu_hash
-
- With -Os, GCC uses a multiply rather than a shift and addition for 'h*33'.
- Use a more efficient expression explicitely.
-
-commit 6ba5517a460c6c438f64d69464fdfc3269a4c91a
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Thu Jun 25 22:22:00 2015 +0000
-
- fix local-dynamic model TLS on mips and powerpc
-
- the TLS ABI spec for mips, powerpc, and some other (presently
- unsupported) RISC archs has the return value of __tls_get_addr offset
- by +0x8000 and the result of DTPOFF relocations offset by -0x8000. I
- had previously assumed this part of the ABI was actually just an
- implementation detail, since the adjustments cancel out. however, when
- the local dynamic model is used for accessing TLS that's known to be
- in the same DSO, either of the following may happen:
-
- 1. the -0x8000 offset may already be applied to the argument structure
- passed to __tls_get_addr at ld time, without any opportunity for
- runtime relocations.
-
- 2. __tls_get_addr may be used with a zero offset argument to obtain a
- base address for the module's TLS, to which the caller then applies
- immediate offsets for individual objects accessed using the local
- dynamic model. since the immediate offsets have the -0x8000 adjustment
- applied to them, the base address they use needs to include the
- +0x8000 offset.
-
- it would be possible, but more complex, to store the pointers in the
- dtv[] array with the +0x8000 offset pre-applied, to avoid the runtime
- cost of adding 0x8000 on each call to __tls_get_addr. this change
- could be made later if measurements show that it would help.
-
-commit ce337daa00e42d4f2d9a4d9ae0ed51b20249d924
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Tue Jun 23 04:03:42 2015 +0000
-
- make dynamic linker work around MAP_FAILED mmap failure on nommu kernels
-
- previously, loading of additional libraries beyond libc/ldso did not
- work on nommu kernels, nor did loading programs via invocation of the
- dynamic linker as a command.
-
-commit a59341420fdedb288d9ff80e73609ae44e9cf258
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Tue Jun 23 00:12:25 2015 +0000
-
- reimplement strverscmp to fix corner cases
-
- this interface is non-standardized and is a GNU invention, and as
- such, our implementation should match the behavior of the GNU
- function. one peculiarity the old implementation got wrong was the
- handling of all-zero digit sequences: they are supposed to compare
- greater than digit sequences of which they are a proper prefix, as in
- 009 < 00.
-
- in addition, high bytes were treated with char signedness rather than
- as unsigned. this was wrong regardless of what the GNU function does
- since the resulting order relation varied by arch.
-
- the new strverscmp implementation makes explicit the cases where the
- order differs from what strcmp would produce, of which there are only
- two.
-
-commit 153e952e1a688859d7095345b17e6c1df74a295c
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Mon Jun 22 20:33:28 2015 +0000
-
- fix regression/typo that disabled __simple_malloc when calloc is used
-
- commit ba819787ee93ceae94efd274f7849e317c1bff58 introduced this
- regression. since the __malloc0 weak alias was not properly provided
- by __simple_malloc, use of calloc forced the full malloc to be linked.
-
-commit ba819787ee93ceae94efd274f7849e317c1bff58
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Mon Jun 22 18:50:09 2015 +0000
-
- fix calloc when __simple_malloc implementation is used
-
- previously, calloc's implementation encoded assumptions about the
- implementation of malloc, accessing a size_t word just prior to the
- allocated memory to determine if it was obtained by mmap to optimize
- out the zero-filling. when __simple_malloc is used (static linking a
- program with no realloc/free), it doesn't matter if the result of this
- check is wrong, since all allocations are zero-initialized anyway. but
- the access could be invalid if it crosses a page boundary or if the
- pointer is not sufficiently aligned, which can happen for very small
- allocations.
-
- this patch fixes the issue by moving the zero-fill logic into malloc.c
- with the full malloc, as a new function named __malloc0, which is
- provided by a weak alias to __simple_malloc (which always gives
- zero-filled memory) when the full malloc is not in use.
-
-commit 55d061f031085f24d138664c897791aebe9a2fab
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sat Jun 20 03:01:07 2015 +0000
-
- provide __stack_chk_fail_local in libc.a
-
- this symbol is needed only on archs where the PLT call ABI is klunky,
- and only for position-independent code compiled with stack protector.
- thus references usually only appear in shared libraries or PIE
- executables, but they can also appear when linking statically if some
- of the object files being linked were built as PIC/PIE.
-
- normally libssp_nonshared.a from the compiler toolchain should provide
- __stack_chk_fail_local, but reportedly it appears prior to -lc in the
- link order, thus failing to satisfy references from libc itself (which
- arise only if libc.a was built as PIC/PIE with stack protector
- enabled).
-
-commit ce3688eca920aa77549323f84e21f33522397115
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sat Jun 20 02:54:30 2015 +0000
-
- work around mips detached thread exit breakage due to kernel regression
-
- linux kernel commit 46e12c07b3b9603c60fc1d421ff18618241cb081 caused
- the mips syscall mechanism to fail with EFAULT when the userspace
- stack pointer is invalid, breaking __unmapself used for detached
- thread exit. the workaround is to set $sp to a known-valid, readable
- address, and the simplest one to obtain is the address of the current
- function, which is available (per o32 calling convention) in $25.
-
-commit 75eceb3ae824d54e865686c0c538551aeebf3372
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Wed Jun 17 17:21:46 2015 +0000
-
- ignore ENOSYS error from mprotect in pthread_create and dynamic linker
-
- this error simply indicated a system without memory protection (NOMMU)
- and should not cause failure in the caller.
-
-commit 10d0268ccfab9152250eeeed3952ce3fed44131a
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Tue Jun 16 15:25:02 2015 +0000
-
- switch to using trap number 31 for syscalls on sh
-
- nominally the low bits of the trap number on sh are the number of
- syscall arguments, but they have never been used by the kernel, and
- some code making syscalls does not even know the number of arguments
- and needs to pass an arbitrary high number anyway.
-
- sh3/sh4 traditionally used the trap range 16-31 for syscalls, but part
- of this range overlapped with hardware exceptions/interrupts on sh2
- hardware, so an incompatible range 32-47 was chosen for sh2.
-
- using trap number 31 everywhere, since it's in the existing sh3/sh4
- range and does not conflict with sh2 hardware, is a proposed
- unification of the kernel syscall convention that will allow binaries
- to be shared between sh2 and sh3/sh4. if this is not accepted into the
- kernel, we can refit the sh2 target with runtime selection mechanisms
- for the trap number, but doing so would be invasive and would entail
- non-trivial overhead.
-
-commit 3366a99b17847b58f2d8cc52cbb5d65deb824f8a
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Tue Jun 16 14:55:06 2015 +0000
-
- switch sh port's __unmapself to generic version when running on sh2/nommu
-
- due to the way the interrupt and syscall trap mechanism works,
- userspace on sh2 must never set the stack pointer to an invalid value.
- thus, the approach used on most archs, where __unmapself executes with
- no stack for the interval between SYS_munmap and SYS_exit, is not
- viable on sh2.
-
- in order not to pessimize sh3/sh4, the sh asm version of __unmapself
- is not removed. instead it's renamed and redirected through code that
- calls either the generic (safe) __unmapself or the sh3/sh4 asm,
- depending on compile-time and run-time conditions.
-
-commit f9d84554bae0fa17c9a1d724549c4408022228a5
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Tue Jun 16 14:28:30 2015 +0000
-
- add support for sh2 interrupt-masking-based atomics to sh port
-
- the sh2 target is being considered an ISA subset of sh3/sh4, in the
- sense that binaries built for sh2 are intended to be usable on later
- cpu models/kernels with mmu support. so rather than hard-coding
- sh2-specific atomics, the runtime atomic selection mechanisms that was
- already in place has been extended to add sh2 atomics.
-
- at this time, the sh2 atomics are not SMP-compatible; since the ISA
- lacks actual atomic operations, the new code instead masks interrupts
- for the duration of the atomic operation, producing an atomic result
- on single-core. this is only possible because the kernel/hardware does
- not impose protections against userspace doing so. additional changes
- will be needed to support future SMP systems.
-
- care has been taken to avoid producing significant additional code
- size in the case where it's known at compile-time that the target is
- not sh2 and does not need sh2-specific code.
-
-commit 1b0cdc8700d29ef018bf226d74b2b58b23bce91c
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Tue Jun 16 07:11:19 2015 +0000
-
- refactor stdio open file list handling, move it out of global libc struct
-
- functions which open in-memory FILE stream variants all shared a tail
- with __fdopen, adding the FILE structure to stdio's open file list.
- replacing this common tail with a function call reduces code size and
- duplication of logic. the list is also partially encapsulated now.
-
- function signatures were chosen to facilitate tail call optimization
- and reduce the need for additional accessor functions.
-
- with these changes, static linked programs that do not use stdio no
- longer have an open file list at all.
-
-commit f22a9edaf8a6f2ca1d314d18b3785558279a5c03
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Tue Jun 16 06:18:00 2015 +0000
-
- byte-based C locale, phase 3: make MB_CUR_MAX variable to activate code
-
- this patch activates the new byte-based C locale (high bytes treated
- as abstract code unit "characters" rather than decoded as multibyte
- characters) by making the value of MB_CUR_MAX depend on the active
- locale. for the C locale, the LC_CTYPE category pointer is null,
- yielding a value of 1. all other locales yield a value of 4.
-
-commit 16f18d036d9a7bf590ee6eb86785c0a9658220b6
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Tue Jun 16 05:35:31 2015 +0000
-
- byte-based C locale, phase 2: stdio and iconv (multibyte callers)
-
- this patch adjusts libc components which use the multibyte functions
- internally, and which depend on them operating in a particular
- encoding, to make the appropriate locale changes before calling them
- and restore the calling thread's locale afterwards. activating the
- byte-based C locale without these changes would cause regressions in
- stdio and iconv.
-
- in the case of iconv, the current implementation was simply using the
- multibyte functions as UTF-8 conversions. setting a multibyte UTF-8
- locale for the duration of the iconv operation allows the code to
- continue working.
-
- in the case of stdio, POSIX requires that FILE streams have an
- encoding rule bound at the time of setting wide orientation. as long
- as all locales, including the C locale, used the same encoding,
- treating high bytes as UTF-8, there was no need to store an encoding
- rule as part of the stream's state.
-
- a new locale field in the FILE structure points to the locale that
- should be made active during fgetwc/fputwc/ungetwc on the stream. it
- cannot point to the locale active at the time the stream becomes
- oriented, because this locale could be mutable (the global locale) or
- could be destroyed (locale_t objects produced by newlocale) before the
- stream is closed. instead, a pointer to the static C or C.UTF-8 locale
- object added in commit commit aeeac9ca5490d7d90fe061ab72da446c01ddf746
- is used. this is valid since categories other than LC_CTYPE will not
- affect these functions.
-
-commit 1507ebf837334e9e07cfab1ca1c2e88449069a80
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Tue Jun 16 04:44:17 2015 +0000
-
- byte-based C locale, phase 1: multibyte character handling functions
-
- this patch makes the functions which work directly on multibyte
- characters treat the high bytes as individual abstract code units
- rather than as multibyte sequences when MB_CUR_MAX is 1. since
- MB_CUR_MAX is presently defined as a constant 4, all of the new code
- added is dead code, and optimizing compilers' code generation should
- not be affected at all. a future commit will activate the new code.
-
- as abstract code units, bytes 0x80 to 0xff are represented by wchar_t
- values 0xdf80 to 0xdfff, at the end of the surrogates range. this
- ensures that they will never be misinterpreted as Unicode characters,
- and that all wctype functions return false for these "characters"
- without needing locale-specific logic. a high range outside of Unicode
- such as 0x7fffff80 to 0x7fffffff was also considered, but since C11's
- char16_t also needs to be able to represent conversions of these
- bytes, the surrogate range was the natural choice.
-
-commit 38e2f727237230300fea6aff68802db04625fd23
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Tue Jun 16 04:21:38 2015 +0000
-
- fix btowc corner case
-
- btowc is required to interpret its argument by conversion to unsigned
- char, unless the argument is equal to EOF. since the conversion to
- produces a non-character value anyway, we can just unconditionally
- convert, for now.
-
-commit ee59c296d56bf26f49f354d6eb32b4b6d4190188
-Author: Szabolcs Nagy <nsz@port70.net>
-Date: Wed Jun 3 10:32:14 2015 +0100
-
- arm: add vdso support
-
- vdso will be available on arm in linux v4.2, the user-space code
- for it is in kernel commit 8512287a8165592466cb9cb347ba94892e9c56a5
-
-commit e3bc22f1eff87b8f029a6ab31f1a269d69e4b053
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sun Jun 14 01:59:02 2015 +0000
-
- refactor malloc's expand_heap to share with __simple_malloc
-
- this extends the brk/stack collision protection added to full malloc
- in commit 276904c2f6bde3a31a24ebfa201482601d18b4f9 to also protect the
- __simple_malloc function used in static-linked programs that don't
- reference the free function.
-
- it also extends support for using mmap when brk fails, which full
- malloc got in commit 5446303328adf4b4e36d9fba21848e6feb55fab4, to
- __simple_malloc.
-
- since __simple_malloc may expand the heap by arbitrarily large
- increments, the stack collision detection is enhanced to detect
- interval overlap rather than just proximity of a single address to the
- stack. code size is increased a bit, but this is partly offset by the
- sharing of code between the two malloc implementations, which due to
- linking semantics, both get linked in a program that needs the full
- malloc with realloc/free support.
-
-commit 4ef9b828c1f39553a69e0635ac91f0fcadd6e8c6
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sat Jun 13 20:53:02 2015 +0000
-
- remove cancellation points in stdio
-
- commit 58165923890865a6ac042fafce13f440ee986fd9 added these optional
- cancellation points on the basis that cancellable stdio could be
- useful, to unblock threads stuck on stdio operations that will never
- complete. however, the only way to ensure that cancellation can
- achieve this is to violate the rules for side effects when
- cancellation is acted upon, discarding knowledge of any partial data
- transfer already completed. our implementation exhibited this behavior
- and was thus non-conforming.
-
- in addition to improving correctness, removing these cancellation
- points moderately reduces code size, and should significantly improve
- performance on i386, where sysenter/syscall instructions can be used
- instead of "int $128" for non-cancellable syscalls.
-
-commit 536c6d5a4205e2a3f161f2983ce1e0ac3082187d
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sat Jun 13 05:17:16 2015 +0000
-
- fix idiom for setting stdio stream orientation to wide
-
- the old idiom, f->mode |= f->mode+1, was adapted from the idiom for
- setting byte orientation, f->mode |= f->mode-1, but the adaptation was
- incorrect. unless the stream was alreasdy set byte-oriented, this code
- incremented f->mode each time it was executed, which would eventually
- lead to overflow. it could be fixed by changing it to f->mode |= 1,
- but upcoming changes will require slightly more work at the time of
- wide orientation, so it makes sense to just call fwide. as an
- optimization in the single-character functions, fwide is only called
- if the stream is not already wide-oriented.
-
-commit f8f565df467c13248104223f99abf7f37cef7584
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sat Jun 13 04:42:38 2015 +0000
-
- add printing of null %s arguments as "(null)" in wide printf
-
- this is undefined, but supported in our implementation of the normal
- printf, so for consistency the wide variant should support it too.
-
-commit f9e25d813860d53cd1e9b6145cc63375d2fe2529
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sat Jun 13 04:37:27 2015 +0000
-
- add %m support to wide printf
-
-commit ec634aad91f57479ef17525e33ed446c780a61f4
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Thu Jun 11 05:01:04 2015 +0000
-
- add sh asm for vfork
-
-commit c30cbcb0a646b1f13a22c645616dce624465b883
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Wed Jun 10 02:27:40 2015 +0000
-
- implement arch-generic version of __unmapself
-
- this can be used to put off writing an asm version of __unmapself for
- new archs, or as a permanent solution on archs where it's not
- practical or even possible to run momentarily with no stack.
-
- the concept here is simple: the caller takes a lock on a global shared
- stack and uses it to make the munmap and exit syscalls. the only trick
- is unlocking, which must be done after the thread exits, and this is
- achieved by using the set_tid_address syscall to have the kernel zero
- and futex-wake the lock word as part of the exit syscall.
-
-commit 276904c2f6bde3a31a24ebfa201482601d18b4f9
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Tue Jun 9 20:30:35 2015 +0000
-
- in malloc, refuse to use brk if it grows into stack
-
- the linux/nommu fdpic ELF loader sets up the brk range to overlap
- entirely with the main thread's stack (but growing from opposite
- ends), so that the resulting failure mode for malloc is not to return
- a null pointer but to start returning pointers to memory that overlaps
- with the caller's stack. needless to say this extremely dangerous and
- makes brk unusable.
-
- since it's non-trivial to detect execution environments that might be
- affected by this kernel bug, and since the severity of the bug makes
- any sort of detection that might yield false-negatives unsafe, we
- instead check the proximity of the brk to the stack pointer each time
- the brk is to be expanded. both the main thread's stack (where the
- real known risk lies) and the calling thread's stack are checked. an
- arbitrary gap distance of 8 MB is imposed, chosen to be larger than
- linux default main-thread stack reservation sizes and larger than any
- reasonable stack configuration on nommu.
-
- the effeciveness of this patch relies on an assumption that the amount
- by which the brk is being grown is smaller than the gap limit, which
- is always true for malloc's use of brk. reliance on this assumption is
- why the check is being done in malloc-specific code and not in __brk.
-
-commit bd1eaceaa3975bd2a2a34e211cff896affaecadf
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Tue Jun 9 20:09:27 2015 +0000
-
- fix spurious errors from pwd/grp functions when nscd backend is absent
-
- for several pwd/grp functions, the only way the caller can distinguish
- between a successful negative result ("no such user/group") and an
- internal error is by clearing errno before the call and checking errno
- afterwards. the nscd backend support code correctly simulated a
- not-found response on systems where such a backend is not running, but
- failed to restore errno.
-
- this commit also fixed an outdated/incorrect comment.
-
-commit 75ce4503950621b11fcc7f1fd1187dbcf3cde312
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sun Jun 7 20:55:23 2015 +0000
-
- fix regression in pre-v7 arm on kernels with kuser helper removed
-
- the arm atomics/TLS runtime selection code is called from
- __set_thread_area and depends on having libc.auxv and __hwcap
- available. commit 71f099cb7db821c51d8f39dfac622c61e54d794c moved the
- first call to __set_thread_area to the top of dynamic linking stage 3,
- before this data is made available, causing the runtime detection code
- to always see __hwcap as zero and thereby select the atomics/TLS
- implementations based on kuser helper.
-
- upcoming work on superh will use similar runtime detection.
-
- ideally this early-init code should be cleanly refactored and shared
- between the dynamic linker and static-linked startup.
-
-commit 32f3c4f70633488550c29a2444f819aafdf345ff
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sun Jun 7 03:09:16 2015 +0000
-
- add multiple inclusion guard to locale_impl.h
-
-commit 04b8360adbb6487f61aa0c00e53ec3a90a5a0d29
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sun Jun 7 02:59:49 2015 +0000
-
- remove redefinition of MB_CUR_MAX in locale_impl.h
-
- unless/until the byte-based C locale is implemented, defining
- MB_CUR_MAX to 1 in the C locale is wrong. no internal code currently
- uses the MB_CUR_MAX macro, but having it defined inconsistently is
- error-prone. applications get the value from stdlib.h and were
- unaffected.
-
-commit 16bf466532d7328e971012b0731ad493b017ad29
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sat Jun 6 18:53:02 2015 +0000
-
- make static C and C.UTF-8 locales available outside of newlocale
-
-commit 312eea2ea4f4363fb01b73660c08bfcf43dd3bb4
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sat Jun 6 18:20:30 2015 +0000
-
- remove another invalid skip of locking in ungetwc
-
-commit 3d7e32d28dc9962e9efc1c317c5b44b5b2df3008
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sat Jun 6 18:16:22 2015 +0000
-
- add macro version of ctype.h isascii function
-
- presumably internal code (ungetwc and fputwc) was written assuming a
- macro implementation existed; otherwise use of isascii is just a
- pessimization.
-
-commit 7e816a6487932cbb3cb71d94b609e50e81f4e5bf
-Author: Rich Felker <dalias@aerifal.cx>
-Date: Sat Jun 6 18:11:17 2015 +0000
-
- remove invalid skip of locking in ungetwc
-
- aside from being invalid, the early check only optimized the error
- case, and likely pessimized the common case by separating the
- two branches on isascii(c) at opposite ends of the function.
-
-commit 63f4b9f18f3674124d8bcb119739fec85e6da005
-Author: Timo Teräs <timo.teras@iki.fi>
-Date: Fri Jun 5 10:39:42 2015 +0300
-
- fix uselocale((locale_t)0) not to modify locale
-
- commit 68630b55c0c7219fe9df70dc28ffbf9efc8021d8 made the new locale to
- be assigned unconditonally resulting in crashes later on.
-
---- a/.gitignore
-+++ b/.gitignore
-@@ -7,5 +7,7 @@ arch/*/bits/alltypes.h
- config.mak
- include/bits
- tools/musl-gcc
-+tools/musl-clang
-+tools/ld.musl-clang
- lib/musl-gcc.specs
- src/internal/version.h
---- a/Makefile
-+++ b/Makefile
-@@ -51,6 +51,9 @@ TOOL_LIBS = lib/musl-gcc.specs
- ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
- ALL_TOOLS = tools/musl-gcc
-
-+WRAPCC_GCC = gcc
-+WRAPCC_CLANG = clang
-+
- LDSO_PATHNAME = $(syslibdir)/ld-musl-$(ARCH)$(SUBARCH).so.1
-
- -include config.mak
-@@ -155,7 +158,11 @@ lib/musl-gcc.specs: tools/musl-gcc.specs
- sh $< "$(includedir)" "$(libdir)" "$(LDSO_PATHNAME)" > $@
-
- tools/musl-gcc: config.mak
-- printf '#!/bin/sh\nexec "$${REALGCC:-gcc}" "$$@" -specs "%s/musl-gcc.specs"\n' "$(libdir)" > $@
-+ printf '#!/bin/sh\nexec "$${REALGCC:-$(WRAPCC_GCC)}" "$$@" -specs "%s/musl-gcc.specs"\n' "$(libdir)" > $@
-+ chmod +x $@
-+
-+tools/%-clang: tools/%-clang.in config.mak
-+ sed -e 's!@CC@!$(WRAPCC_CLANG)!g' -e 's!@PREFIX@!$(prefix)!g' -e 's!@INCDIR@!$(includedir)!g' -e 's!@LIBDIR@!$(libdir)!g' -e 's!@LDSO@!$(LDSO_PATHNAME)!g' $< > $@
- chmod +x $@
-
- $(DESTDIR)$(bindir)/%: tools/%
---- a/arch/arm/syscall_arch.h
-+++ b/arch/arm/syscall_arch.h
-@@ -72,3 +72,7 @@ static inline long __syscall6(long n, lo
- register long r5 __asm__("r5") = f;
- __asm_syscall("r"(r7), "0"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4), "r"(r5));
- }
-+
-+#define VDSO_USEFUL
-+#define VDSO_CGT_SYM "__vdso_clock_gettime"
-+#define VDSO_CGT_VER "LINUX_2.6"
---- a/arch/mips/bits/signal.h
-+++ b/arch/mips/bits/signal.h
-@@ -28,7 +28,7 @@ struct sigcontext
- typedef struct
- {
- unsigned regmask, status;
-- unsigned long long pc, regs[32], fpregs[32];
-+ unsigned long long pc, gregs[32], fpregs[32];
- unsigned ownedfp, fpc_csr, fpc_eir, used_math, dsp;
- unsigned long long mdhi, mdlo;
- unsigned long hi1, lo1, hi2, lo2, hi3, lo3;
---- a/arch/mips/bits/socket.h
-+++ b/arch/mips/bits/socket.h
-@@ -22,26 +22,31 @@ struct cmsghdr
- #define SOL_SOCKET 65535
-
- #define SO_DEBUG 1
--#define SO_REUSEADDR 4
--#define SO_TYPE 0x1008
--#define SO_ERROR 0x1007
--#define SO_DONTROUTE 16
--#define SO_BROADCAST 32
-+
-+#define SO_REUSEADDR 0x0004
-+#define SO_KEEPALIVE 0x0008
-+#define SO_DONTROUTE 0x0010
-+#define SO_BROADCAST 0x0020
-+#define SO_LINGER 0x0080
-+#define SO_OOBINLINE 0x0100
-+#define SO_REUSEPORT 0x0200
- #define SO_SNDBUF 0x1001
- #define SO_RCVBUF 0x1002
--#define SO_KEEPALIVE 8
--#define SO_OOBINLINE 256
-+#define SO_SNDLOWAT 0x1003
-+#define SO_RCVLOWAT 0x1004
-+#define SO_RCVTIMEO 0x1006
-+#define SO_SNDTIMEO 0x1005
-+#define SO_ERROR 0x1007
-+#define SO_TYPE 0x1008
-+#define SO_ACCEPTCONN 0x1009
-+#define SO_PROTOCOL 0x1028
-+#define SO_DOMAIN 0x1029
-+
- #define SO_NO_CHECK 11
- #define SO_PRIORITY 12
--#define SO_LINGER 128
- #define SO_BSDCOMPAT 14
--#define SO_REUSEPORT 512
- #define SO_PASSCRED 17
- #define SO_PEERCRED 18
--#define SO_RCVLOWAT 0x1004
--#define SO_SNDLOWAT 0x1003
--#define SO_RCVTIMEO 0x1006
--#define SO_SNDTIMEO 0x1005
- #define SO_SNDBUFFORCE 31
- #define SO_RCVBUFFORCE 33
-
---- a/arch/mips/pthread_arch.h
-+++ b/arch/mips/pthread_arch.h
-@@ -13,4 +13,6 @@ static inline struct pthread *__pthread_
- #define TLS_ABOVE_TP
- #define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread) + 0x7000)
-
-+#define DTP_OFFSET 0x8000
-+
- #define CANCEL_REG_IP (3-(union {int __i; char __b;}){1}.__b)
---- a/arch/powerpc/bits/socket.h
-+++ b/arch/powerpc/bits/socket.h
-@@ -24,8 +24,6 @@ struct cmsghdr
- #define SO_BROADCAST 6
- #define SO_SNDBUF 7
- #define SO_RCVBUF 8
--#define SO_SNDBUFFORCE 32
--#define SO_RCVBUFFORCE 33
- #define SO_KEEPALIVE 9
- #define SO_OOBINLINE 10
- #define SO_NO_CHECK 11
-@@ -39,4 +37,8 @@ struct cmsghdr
- #define SO_SNDTIMEO 19
- #define SO_PASSCRED 20
- #define SO_PEERCRED 21
--
-+#define SO_ACCEPTCONN 30
-+#define SO_SNDBUFFORCE 32
-+#define SO_RCVBUFFORCE 33
-+#define SO_PROTOCOL 38
-+#define SO_DOMAIN 39
---- a/arch/powerpc/pthread_arch.h
-+++ b/arch/powerpc/pthread_arch.h
-@@ -12,6 +12,8 @@ static inline struct pthread *__pthread_
- #define TLS_ABOVE_TP
- #define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread) + 0x7000)
-
-+#define DTP_OFFSET 0x8000
-+
- // offset of the PC register in mcontext_t, divided by the system wordsize
- // the kernel calls the ip "nip", it's the first saved value after the 32
- // GPRs.
---- /dev/null
-+++ b/arch/sh/src/__set_thread_area.c
-@@ -0,0 +1,34 @@
-+#include "pthread_impl.h"
-+#include "libc.h"
-+#include "sh_atomic.h"
-+#include <elf.h>
-+
-+/* Also perform sh-specific init */
-+
-+#define CPU_HAS_LLSC 0x0040
-+
-+__attribute__((__visibility__("hidden"))) unsigned __sh_atomic_model, __sh_nommu;
-+
-+int __set_thread_area(void *p)
-+{
-+ size_t *aux;
-+ __asm__ __volatile__ ( "ldc %0, gbr" : : "r"(p) : "memory" );
-+#ifndef __SH4A__
-+ if (__hwcap & CPU_HAS_LLSC) {
-+ __sh_atomic_model = SH_A_LLSC;
-+ return 0;
-+ }
-+#if !defined(__SH3__) && !defined(__SH4__)
-+ for (aux=libc.auxv; *aux; aux+=2) {
-+ if (*aux != AT_PLATFORM) continue;
-+ const char *s = (void *)aux[1];
-+ if (s[0]!='s' || s[1]!='h' || s[2]!='2' || s[3]-'0'<10u) break;
-+ __sh_atomic_model = SH_A_IMASK;
-+ __sh_nommu = 1;
-+ return 0;
-+ }
-+#endif
-+ /* __sh_atomic_model = SH_A_GUSA; */ /* 0, default */
-+#endif
-+ return 0;
-+}
---- /dev/null
-+++ b/arch/sh/src/__unmapself.c
-@@ -0,0 +1,19 @@
-+#include "pthread_impl.h"
-+
-+void __unmapself_sh_mmu(void *, size_t);
-+void __unmapself_sh_nommu(void *, size_t);
-+
-+#if !defined(__SH3__) && !defined(__SH4__)
-+#define __unmapself __unmapself_sh_nommu
-+#include "../../../src/thread/__unmapself.c"
-+#undef __unmapself
-+extern __attribute__((__visibility__("hidden"))) unsigned __sh_nommu;
-+#else
-+#define __sh_nommu 0
-+#endif
-+
-+void __unmapself(void *base, size_t size)
-+{
-+ if (__sh_nommu) __unmapself_sh_nommu(base, size);
-+ else __unmapself_sh_mmu(base, size);
-+}
---- a/arch/sh/src/atomic.c
-+++ b/arch/sh/src/atomic.c
-@@ -1,8 +1,26 @@
- #ifndef __SH4A__
-
-+#include "sh_atomic.h"
- #include "atomic.h"
- #include "libc.h"
-
-+static inline unsigned mask()
-+{
-+ unsigned sr;
-+ __asm__ __volatile__ ( "\n"
-+ " stc sr,r0 \n"
-+ " mov r0,%0 \n"
-+ " or #0xf0,r0 \n"
-+ " ldc r0,sr \n"
-+ : "=&r"(sr) : : "memory", "r0" );
-+ return sr;
-+}
-+
-+static inline void unmask(unsigned sr)
-+{
-+ __asm__ __volatile__ ( "ldc %0,sr" : : "r"(sr) : "memory" );
-+}
-+
- /* gusa is a hack in the kernel which lets you create a sequence of instructions
- * which will be restarted if the process is preempted in the middle of the
- * sequence. It will do for implementing atomics on non-smp systems. ABI is:
-@@ -25,11 +43,17 @@
- " mov.l " new ", @" mem "\n" \
- "1: mov r1, r15\n"
-
--#define CPU_HAS_LLSC 0x0040
--
- int __sh_cas(volatile int *p, int t, int s)
- {
-- if (__hwcap & CPU_HAS_LLSC) return __sh_cas_llsc(p, t, s);
-+ if (__sh_atomic_model == SH_A_LLSC) return __sh_cas_llsc(p, t, s);
-+
-+ if (__sh_atomic_model == SH_A_IMASK) {
-+ unsigned sr = mask();
-+ int old = *p;
-+ if (old==t) *p = s;
-+ unmask(sr);
-+ return old;
-+ }
-
- int old;
- __asm__ __volatile__(
-@@ -43,7 +67,15 @@ int __sh_cas(volatile int *p, int t, int
-
- int __sh_swap(volatile int *x, int v)
- {
-- if (__hwcap & CPU_HAS_LLSC) return __sh_swap_llsc(x, v);
-+ if (__sh_atomic_model == SH_A_LLSC) return __sh_swap_llsc(x, v);
-+
-+ if (__sh_atomic_model == SH_A_IMASK) {
-+ unsigned sr = mask();
-+ int old = *x;
-+ *x = v;
-+ unmask(sr);
-+ return old;
-+ }
-
- int old;
- __asm__ __volatile__(
-@@ -55,7 +87,15 @@ int __sh_swap(volatile int *x, int v)
-
- int __sh_fetch_add(volatile int *x, int v)
- {
-- if (__hwcap & CPU_HAS_LLSC) return __sh_fetch_add_llsc(x, v);
-+ if (__sh_atomic_model == SH_A_LLSC) return __sh_fetch_add_llsc(x, v);
-+
-+ if (__sh_atomic_model == SH_A_IMASK) {
-+ unsigned sr = mask();
-+ int old = *x;
-+ *x = old + v;
-+ unmask(sr);
-+ return old;
-+ }
-
- int old, dummy;
- __asm__ __volatile__(
-@@ -69,7 +109,7 @@ int __sh_fetch_add(volatile int *x, int
-
- void __sh_store(volatile int *p, int x)
- {
-- if (__hwcap & CPU_HAS_LLSC) return __sh_store_llsc(p, x);
-+ if (__sh_atomic_model == SH_A_LLSC) return __sh_store_llsc(p, x);
- __asm__ __volatile__(
- " mov.l %1, @%0\n"
- : : "r"(p), "r"(x) : "memory");
-@@ -77,7 +117,15 @@ void __sh_store(volatile int *p, int x)
-
- void __sh_and(volatile int *x, int v)
- {
-- if (__hwcap & CPU_HAS_LLSC) return __sh_and_llsc(x, v);
-+ if (__sh_atomic_model == SH_A_LLSC) return __sh_and_llsc(x, v);
-+
-+ if (__sh_atomic_model == SH_A_IMASK) {
-+ unsigned sr = mask();
-+ int old = *x;
-+ *x = old & v;
-+ unmask(sr);
-+ return;
-+ }
-
- int dummy;
- __asm__ __volatile__(
-@@ -89,7 +137,15 @@ void __sh_and(volatile int *x, int v)
-
- void __sh_or(volatile int *x, int v)
- {
-- if (__hwcap & CPU_HAS_LLSC) return __sh_or_llsc(x, v);
-+ if (__sh_atomic_model == SH_A_LLSC) return __sh_or_llsc(x, v);
-+
-+ if (__sh_atomic_model == SH_A_IMASK) {
-+ unsigned sr = mask();
-+ int old = *x;
-+ *x = old | v;
-+ unmask(sr);
-+ return;
-+ }
-
- int dummy;
- __asm__ __volatile__(
---- /dev/null
-+++ b/arch/sh/src/sh_atomic.h
-@@ -0,0 +1,15 @@
-+#ifndef _SH_ATOMIC_H
-+#define _SH_ATOMIC_H
-+
-+#define SH_A_GUSA 0
-+#define SH_A_LLSC 1
-+#define SH_A_CAS 2
-+#if !defined(__SH3__) && !defined(__SH4__)
-+#define SH_A_IMASK 3
-+#else
-+#define SH_A_IMASK -1LL /* unmatchable by unsigned int */
-+#endif
-+
-+extern __attribute__((__visibility__("hidden"))) unsigned __sh_atomic_model;
-+
-+#endif
---- a/arch/sh/syscall_arch.h
-+++ b/arch/sh/syscall_arch.h
-@@ -8,7 +8,7 @@
- */
- #define __asm_syscall(trapno, ...) do { \
- __asm__ __volatile__ ( \
-- "trapa #" #trapno "\n" \
-+ "trapa #31\n" \
- "or r0, r0\n" \
- "or r0, r0\n" \
- "or r0, r0\n" \
---- a/configure
-+++ b/configure
-@@ -28,7 +28,7 @@ Optional features:
- --enable-debug build with debugging information [disabled]
- --enable-warnings build with recommended warnings flags [disabled]
- --enable-visibility use global visibility options to optimize PIC [auto]
-- --enable-gcc-wrapper build musl-gcc toolchain wrapper [auto]
-+ --enable-wrapper=... build given musl toolchain wrapper [auto]
- --disable-shared inhibit building shared library [enabled]
- --disable-static inhibit building static library [enabled]
-
-@@ -123,6 +123,8 @@ bindir='$(exec_prefix)/bin'
- libdir='$(prefix)/lib'
- includedir='$(prefix)/include'
- syslibdir='/lib'
-+tools=
-+tool_libs=
- target=
- optimize=auto
- debug=no
-@@ -131,6 +133,8 @@ visibility=auto
- shared=auto
- static=yes
- wrapper=auto
-+gcc_wrapper=no
-+clang_wrapper=no
-
- for arg ; do
- case "$arg" in
-@@ -154,7 +158,12 @@ case "$arg" in
- --disable-warnings|--enable-warnings=no) warnings=no ;;
- --enable-visibility|--enable-visibility=yes) visibility=yes ;;
- --disable-visibility|--enable-visibility=no) visibility=no ;;
----enable-gcc-wrapper|--enable-gcc-wrapper=yes) wrapper=yes ;;
-+--enable-wrapper|--enable-wrapper=yes) wrapper=detect ;;
-+--enable-wrapper=all) wrapper=yes ; gcc_wrapper=yes ; clang_wrapper=yes ;;
-+--enable-wrapper=gcc) wrapper=yes ; gcc_wrapper=yes ;;
-+--enable-wrapper=clang) wrapper=yes ; clang_wrapper=yes ;;
-+--disable-wrapper|--enable-wrapper=no) wrapper=no ;;
-+--enable-gcc-wrapper|--enable-gcc-wrapper=yes) wrapper=yes ; gcc_wrapper=yes ;;
- --disable-gcc-wrapper|--enable-gcc-wrapper=no) wrapper=no ;;
- --enable-*|--disable-*|--with-*|--without-*|--*dir=*|--build=*) ;;
- --host=*|--target=*) target=${arg#*=} ;;
-@@ -215,36 +224,51 @@ tryldflag LDFLAGS_TRY -Werror=unknown-wa
- tryldflag LDFLAGS_TRY -Werror=unused-command-line-argument
-
- #
--# Need to know if the compiler is gcc to decide whether to build the
--# musl-gcc wrapper, and for critical bug detection in some gcc versions.
-+# Need to know if the compiler is gcc or clang to decide which toolchain
-+# wrappers to build.
- #
--printf "checking whether compiler is gcc... "
--if fnmatch '*gcc\ version*' "$(LC_ALL=C $CC -v 2>&1)" ; then
--cc_is_gcc=yes
-+printf "checking for C compiler family... "
-+cc_ver="$(LC_ALL=C $CC -v 2>&1)"
-+cc_family=unknown
-+if fnmatch '*gcc\ version*' "$cc_ver" ; then
-+cc_family=gcc
-+elif fnmatch '*clang\ version*' "$cc_ver" ; then
-+cc_family=clang
-+fi
-+echo "$cc_family"
-+
-+#
-+# Figure out toolchain wrapper to build
-+#
-+if test "$wrapper" = auto -o "$wrapper" = detect ; then
-+echo "#include <stdlib.h>" > "$tmpc"
-+echo "#if ! __GLIBC__" >> "$tmpc"
-+echo "#error no" >> "$tmpc"
-+echo "#endif" >> "$tmpc"
-+printf "checking for toolchain wrapper to build... "
-+if test "$wrapper" = auto && ! $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
-+echo "none"
-+elif test "$cc_family" = gcc ; then
-+gcc_wrapper=yes
-+echo "gcc"
-+elif test "$cc_family" = clang ; then
-+clang_wrapper=yes
-+echo "clang"
- else
--cc_is_gcc=no
-+echo "none"
-+if test "$wrapper" = detect ; then
-+fail "$0: could not find an appropriate toolchain wrapper"
- fi
--echo "$cc_is_gcc"
--
--#
--# Only build musl-gcc wrapper if toolchain does not already target musl
--#
--if test "$wrapper" = auto ; then
--printf "checking whether to build musl-gcc wrapper... "
--if test "$cc_is_gcc" = yes ; then
--wrapper=yes
--while read line ; do
--case "$line" in */ld-musl-*) wrapper=no ;; esac
--done <<EOF
--$($CC -dumpspecs)
--EOF
--else
--wrapper=no
- fi
--echo "$wrapper"
- fi
-
--
-+if test "$gcc_wrapper" = yes ; then
-+tools="$tools tools/musl-gcc"
-+tool_libs="$tool_libs lib/musl-gcc.specs"
-+fi
-+if test "$clang_wrapper" = yes ; then
-+tools="$tools tools/musl-clang tools/ld.musl-clang"
-+fi
-
- #
- # Find the target architecture
-@@ -580,11 +604,13 @@ LDFLAGS = $LDFLAGS_AUTO $LDFLAGS
- CROSS_COMPILE = $CROSS_COMPILE
- LIBCC = $LIBCC
- OPTIMIZE_GLOBS = $OPTIMIZE_GLOBS
-+ALL_TOOLS = $tools
-+TOOL_LIBS = $tool_libs
- EOF
- test "x$static" = xno && echo "STATIC_LIBS ="
- test "x$shared" = xno && echo "SHARED_LIBS ="
--test "x$wrapper" = xno && echo "ALL_TOOLS ="
--test "x$wrapper" = xno && echo "TOOL_LIBS ="
-+test "x$cc_family" = xgcc && echo 'WRAPCC_GCC = $(CC)'
-+test "x$cc_family" = xclang && echo 'WRAPCC_CLANG = $(CC)'
- exec 1>&3 3>&-
-
- printf "done\n"
---- a/include/ctype.h
-+++ b/include/ctype.h
-@@ -64,6 +64,7 @@ int isascii(int);
- int toascii(int);
- #define _tolower(a) ((a)|0x20)
- #define _toupper(a) ((a)&0x5f)
-+#define isascii(a) (0 ? isascii(a) : (unsigned)(a) < 128)
-
- #endif
-
---- a/include/stdlib.h
-+++ b/include/stdlib.h
-@@ -76,7 +76,8 @@ size_t wcstombs (char *__restrict, const
- #define EXIT_FAILURE 1
- #define EXIT_SUCCESS 0
-
--#define MB_CUR_MAX ((size_t)+4)
-+size_t __ctype_get_mb_cur_max(void);
-+#define MB_CUR_MAX (__ctype_get_mb_cur_max())
-
- #define RAND_MAX (0x7fffffff)
-
---- a/include/sys/socket.h
-+++ b/include/sys/socket.h
-@@ -177,8 +177,11 @@ struct linger
- #define SO_SNDLOWAT 19
- #define SO_RCVTIMEO 20
- #define SO_SNDTIMEO 21
-+#define SO_ACCEPTCONN 30
- #define SO_SNDBUFFORCE 32
- #define SO_RCVBUFFORCE 33
-+#define SO_PROTOCOL 38
-+#define SO_DOMAIN 39
- #endif
-
- #define SO_SECURITY_AUTHENTICATION 22
-@@ -195,7 +198,6 @@ struct linger
- #define SO_TIMESTAMP 29
- #define SCM_TIMESTAMP SO_TIMESTAMP
-
--#define SO_ACCEPTCONN 30
- #define SO_PEERSEC 31
- #define SO_PASSSEC 34
- #define SO_TIMESTAMPNS 35
-@@ -203,8 +205,6 @@ struct linger
- #define SO_MARK 36
- #define SO_TIMESTAMPING 37
- #define SCM_TIMESTAMPING SO_TIMESTAMPING
--#define SO_PROTOCOL 38
--#define SO_DOMAIN 39
- #define SO_RXQ_OVFL 40
- #define SO_WIFI_STATUS 41
- #define SCM_WIFI_STATUS SO_WIFI_STATUS
---- a/include/unistd.h
-+++ b/include/unistd.h
-@@ -185,7 +185,7 @@ int setresgid(gid_t, gid_t, gid_t);
- int getresuid(uid_t *, uid_t *, uid_t *);
- int getresgid(gid_t *, gid_t *, gid_t *);
- char *get_current_dir_name(void);
--void syncfs(int);
-+int syncfs(int);
- int euidaccess(const char *, int);
- int eaccess(const char *, int);
- #endif
---- a/src/ctype/__ctype_get_mb_cur_max.c
-+++ b/src/ctype/__ctype_get_mb_cur_max.c
-@@ -1,6 +1,7 @@
--#include <stddef.h>
-+#include <stdlib.h>
-+#include "locale_impl.h"
-
- size_t __ctype_get_mb_cur_max()
- {
-- return 4;
-+ return MB_CUR_MAX;
- }
---- a/src/ctype/isascii.c
-+++ b/src/ctype/isascii.c
-@@ -1,4 +1,5 @@
- #include <ctype.h>
-+#undef isascii
-
- int isascii(int c)
- {
---- a/src/env/__stack_chk_fail.c
-+++ b/src/env/__stack_chk_fail.c
-@@ -25,4 +25,8 @@ void __stack_chk_fail_local(void)
- a_crash();
- }
-
-+#else
-+
-+weak_alias(__stack_chk_fail, __stack_chk_fail_local);
-+
- #endif
---- a/src/internal/libc.h
-+++ b/src/internal/libc.h
-@@ -17,8 +17,6 @@ struct __libc {
- int secure;
- volatile int threads_minus_1;
- size_t *auxv;
-- FILE *ofl_head;
-- volatile int ofl_lock[2];
- size_t tls_size;
- size_t page_size;
- struct __locale_struct global_locale;
---- a/src/internal/locale_impl.h
-+++ b/src/internal/locale_impl.h
-@@ -1,3 +1,6 @@
-+#ifndef _LOCALE_IMPL_H
-+#define _LOCALE_IMPL_H
-+
- #include <locale.h>
- #include <stdlib.h>
- #include "libc.h"
-@@ -12,6 +15,10 @@ struct __locale_map {
- const struct __locale_map *next;
- };
-
-+extern const struct __locale_map __c_dot_utf8;
-+extern const struct __locale_struct __c_locale;
-+extern const struct __locale_struct __c_dot_utf8_locale;
-+
- const struct __locale_map *__get_locale(int, const char *);
- const char *__mo_lookup(const void *, size_t, const char *);
- const char *__lctrans(const char *, const struct __locale_map *);
-@@ -20,9 +27,14 @@ const char *__lctrans_cur(const char *);
- #define LCTRANS(msg, lc, loc) __lctrans(msg, (loc)->cat[(lc)])
- #define LCTRANS_CUR(msg) __lctrans_cur(msg)
-
-+#define C_LOCALE ((locale_t)&__c_locale)
-+#define UTF8_LOCALE ((locale_t)&__c_dot_utf8_locale)
-+
- #define CURRENT_LOCALE (__pthread_self()->locale)
-
- #define CURRENT_UTF8 (!!__pthread_self()->locale->cat[LC_CTYPE])
-
- #undef MB_CUR_MAX
- #define MB_CUR_MAX (CURRENT_UTF8 ? 4 : 1)
-+
-+#endif
---- a/src/internal/pthread_impl.h
-+++ b/src/internal/pthread_impl.h
-@@ -94,6 +94,10 @@ struct __timer {
- #define CANARY canary
- #endif
-
-+#ifndef DTP_OFFSET
-+#define DTP_OFFSET 0
-+#endif
-+
- #define SIGTIMER 32
- #define SIGCANCEL 33
- #define SIGSYNCCALL 34
---- a/src/internal/sh/syscall.s
-+++ b/src/internal/sh/syscall.s
-@@ -13,7 +13,7 @@ __syscall:
- mov.l @r15, r7
- mov.l @(4,r15), r0
- mov.l @(8,r15), r1
-- trapa #22
-+ trapa #31
- or r0, r0
- or r0, r0
- or r0, r0
---- a/src/internal/stdio_impl.h
-+++ b/src/internal/stdio_impl.h
-@@ -47,6 +47,7 @@ struct _IO_FILE {
- unsigned char *shend;
- off_t shlim, shcnt;
- FILE *prev_locked, *next_locked;
-+ struct __locale_struct *locale;
- };
-
- size_t __stdio_read(FILE *, unsigned char *, size_t);
-@@ -75,8 +76,9 @@ int __putc_unlocked(int, FILE *);
- FILE *__fdopen(int, const char *);
- int __fmodeflags(const char *);
-
--#define OFLLOCK() LOCK(libc.ofl_lock)
--#define OFLUNLOCK() UNLOCK(libc.ofl_lock)
-+FILE *__ofl_add(FILE *f);
-+FILE **__ofl_lock(void);
-+void __ofl_unlock(void);
-
- #define feof(f) ((f)->flags & F_EOF)
- #define ferror(f) ((f)->flags & F_ERR)
---- a/src/ldso/dynlink.c
-+++ b/src/ldso/dynlink.c
-@@ -156,7 +156,7 @@ static uint32_t gnu_hash(const char *s0)
- const unsigned char *s = (void *)s0;
- uint_fast32_t h = 5381;
- for (; *s; s++)
-- h = h*33 + *s;
-+ h += h*32 + *s;
- return h;
- }
-
-@@ -174,32 +174,39 @@ static Sym *sysv_lookup(const char *s, u
- return 0;
- }
-
--static Sym *gnu_lookup(const char *s, uint32_t h1, struct dso *dso)
-+static Sym *gnu_lookup(uint32_t h1, uint32_t *hashtab, struct dso *dso, const char *s)
- {
-- Sym *syms = dso->syms;
-- char *strings = dso->strings;
-- uint32_t *hashtab = dso->ghashtab;
- uint32_t nbuckets = hashtab[0];
- uint32_t *buckets = hashtab + 4 + hashtab[2]*(sizeof(size_t)/4);
-- uint32_t h2;
-- uint32_t *hashval;
- uint32_t i = buckets[h1 % nbuckets];
-
- if (!i) return 0;
-
-- hashval = buckets + nbuckets + (i - hashtab[1]);
-+ uint32_t *hashval = buckets + nbuckets + (i - hashtab[1]);
-
- for (h1 |= 1; ; i++) {
-- h2 = *hashval++;
-- if ((!dso->versym || dso->versym[i] >= 0)
-- && (h1 == (h2|1)) && !strcmp(s, strings + syms[i].st_name))
-- return syms+i;
-+ uint32_t h2 = *hashval++;
-+ if ((h1 == (h2|1)) && (!dso->versym || dso->versym[i] >= 0)
-+ && !strcmp(s, dso->strings + dso->syms[i].st_name))
-+ return dso->syms+i;
- if (h2 & 1) break;
- }
-
- return 0;
- }
-
-+static Sym *gnu_lookup_filtered(uint32_t h1, uint32_t *hashtab, struct dso *dso, const char *s, uint32_t fofs, size_t fmask)
-+{
-+ const size_t *bloomwords = (const void *)(hashtab+4);
-+ size_t f = bloomwords[fofs & (hashtab[2]-1)];
-+ if (!(f & fmask)) return 0;
-+
-+ f >>= (h1 >> hashtab[3]) % (8 * sizeof f);
-+ if (!(f & 1)) return 0;
-+
-+ return gnu_lookup(h1, hashtab, dso, s);
-+}
-+
- #define OK_TYPES (1<<STT_NOTYPE | 1<<STT_OBJECT | 1<<STT_FUNC | 1<<STT_COMMON | 1<<STT_TLS)
- #define OK_BINDS (1<<STB_GLOBAL | 1<<STB_WEAK | 1<<STB_GNU_UNIQUE)
-
-@@ -209,14 +216,20 @@ static Sym *gnu_lookup(const char *s, ui
-
- static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
- {
-- uint32_t h = 0, gh = 0;
-+ uint32_t h = 0, gh, gho, *ght;
-+ size_t ghm = 0;
- struct symdef def = {0};
- for (; dso; dso=dso->next) {
- Sym *sym;
- if (!dso->global) continue;
-- if (dso->ghashtab) {
-- if (!gh) gh = gnu_hash(s);
-- sym = gnu_lookup(s, gh, dso);
-+ if ((ght = dso->ghashtab)) {
-+ if (!ghm) {
-+ gh = gnu_hash(s);
-+ int maskbits = 8 * sizeof ghm;
-+ gho = gh / maskbits;
-+ ghm = 1ul << gh % maskbits;
-+ }
-+ sym = gnu_lookup_filtered(gh, ght, dso, s, gho, ghm);
- } else {
- if (!h) h = sysv_hash(s);
- sym = sysv_lookup(s, h, dso);
-@@ -337,7 +350,7 @@ static void do_relocs(struct dso *dso, s
- *reloc_addr = def.dso->tls_id;
- break;
- case REL_DTPOFF:
-- *reloc_addr = tls_val + addend;
-+ *reloc_addr = tls_val + addend - DTP_OFFSET;
- break;
- #ifdef TLS_ABOVE_TP
- case REL_TPOFF:
-@@ -423,6 +436,28 @@ static void reclaim_gaps(struct dso *dso
- }
- }
-
-+static void *mmap_fixed(void *p, size_t n, int prot, int flags, int fd, off_t off)
-+{
-+ char *q = mmap(p, n, prot, flags, fd, off);
-+ if (q != MAP_FAILED || errno != EINVAL) return q;
-+ /* Fallbacks for MAP_FIXED failure on NOMMU kernels. */
-+ if (flags & MAP_ANONYMOUS) {
-+ memset(p, 0, n);
-+ return p;
-+ }
-+ ssize_t r;
-+ if (lseek(fd, off, SEEK_SET) < 0) return MAP_FAILED;
-+ for (q=p; n; q+=r, off+=r, n-=r) {
-+ r = read(fd, q, n);
-+ if (r < 0 && errno != EINTR) return MAP_FAILED;
-+ if (!r) {
-+ memset(q, 0, n);
-+ break;
-+ }
-+ }
-+ return p;
-+}
-+
- static void *map_library(int fd, struct dso *dso)
- {
- Ehdr buf[(896+sizeof(Ehdr))/sizeof(Ehdr)];
-@@ -524,19 +559,20 @@ static void *map_library(int fd, struct
- prot = (((ph->p_flags&PF_R) ? PROT_READ : 0) |
- ((ph->p_flags&PF_W) ? PROT_WRITE: 0) |
- ((ph->p_flags&PF_X) ? PROT_EXEC : 0));
-- if (mmap(base+this_min, this_max-this_min, prot, MAP_PRIVATE|MAP_FIXED, fd, off_start) == MAP_FAILED)
-+ if (mmap_fixed(base+this_min, this_max-this_min, prot, MAP_PRIVATE|MAP_FIXED, fd, off_start) == MAP_FAILED)
- goto error;
- if (ph->p_memsz > ph->p_filesz) {
- size_t brk = (size_t)base+ph->p_vaddr+ph->p_filesz;
- size_t pgbrk = brk+PAGE_SIZE-1 & -PAGE_SIZE;
- memset((void *)brk, 0, pgbrk-brk & PAGE_SIZE-1);
-- if (pgbrk-(size_t)base < this_max && mmap((void *)pgbrk, (size_t)base+this_max-pgbrk, prot, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) == MAP_FAILED)
-+ if (pgbrk-(size_t)base < this_max && mmap_fixed((void *)pgbrk, (size_t)base+this_max-pgbrk, prot, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) == MAP_FAILED)
- goto error;
- }
- }
- for (i=0; ((size_t *)(base+dyn))[i]; i+=2)
- if (((size_t *)(base+dyn))[i]==DT_TEXTREL) {
-- if (mprotect(map, map_len, PROT_READ|PROT_WRITE|PROT_EXEC) < 0)
-+ if (mprotect(map, map_len, PROT_READ|PROT_WRITE|PROT_EXEC)
-+ && errno != ENOSYS)
- goto error;
- break;
- }
-@@ -927,7 +963,8 @@ static void reloc_all(struct dso *p)
- do_relocs(p, (void *)(p->base+dyn[DT_RELA]), dyn[DT_RELASZ], 3);
-
- if (head != &ldso && p->relro_start != p->relro_end &&
-- mprotect(p->base+p->relro_start, p->relro_end-p->relro_start, PROT_READ) < 0) {
-+ mprotect(p->base+p->relro_start, p->relro_end-p->relro_start, PROT_READ)
-+ && errno != ENOSYS) {
- error("Error relocating %s: RELRO protection failed: %m",
- p->name);
- if (runtime) longjmp(*rtld_fail, 1);
-@@ -1078,7 +1115,7 @@ void *__tls_get_new(size_t *v)
- __block_all_sigs(&set);
- if (v[0]<=(size_t)self->dtv[0]) {
- __restore_sigs(&set);
-- return (char *)self->dtv[v[0]]+v[1];
-+ return (char *)self->dtv[v[0]]+v[1]+DTP_OFFSET;
- }
-
- /* This is safe without any locks held because, if the caller
-@@ -1111,7 +1148,7 @@ void *__tls_get_new(size_t *v)
- if (p->tls_id == v[0]) break;
- }
- __restore_sigs(&set);
-- return mem + v[1];
-+ return mem + v[1] + DTP_OFFSET;
- }
-
- static void update_tls_size()
-@@ -1192,6 +1229,17 @@ _Noreturn void __dls3(size_t *sp)
- char **argv_orig = argv;
- char **envp = argv+argc+1;
-
-+ /* Find aux vector just past environ[] and use it to initialize
-+ * global data that may be needed before we can make syscalls. */
-+ __environ = envp;
-+ for (i=argc+1; argv[i]; i++);
-+ libc.auxv = auxv = (void *)(argv+i+1);
-+ decode_vec(auxv, aux, AUX_CNT);
-+ __hwcap = aux[AT_HWCAP];
-+ libc.page_size = aux[AT_PAGESZ];
-+ libc.secure = ((aux[0]&0x7800)!=0x7800 || aux[AT_UID]!=aux[AT_EUID]
-+ || aux[AT_GID]!=aux[AT_EGID] || aux[AT_SECURE]);
-+
- /* Setup early thread pointer in builtin_tls for ldso/libc itself to
- * use during dynamic linking. If possible it will also serve as the
- * thread pointer at runtime. */
-@@ -1200,25 +1248,11 @@ _Noreturn void __dls3(size_t *sp)
- a_crash();
- }
-
-- /* Find aux vector just past environ[] */
-- for (i=argc+1; argv[i]; i++)
-- if (!memcmp(argv[i], "LD_LIBRARY_PATH=", 16))
-- env_path = argv[i]+16;
-- else if (!memcmp(argv[i], "LD_PRELOAD=", 11))
-- env_preload = argv[i]+11;
-- auxv = (void *)(argv+i+1);
--
-- decode_vec(auxv, aux, AUX_CNT);
--
- /* Only trust user/env if kernel says we're not suid/sgid */
-- if ((aux[0]&0x7800)!=0x7800 || aux[AT_UID]!=aux[AT_EUID]
-- || aux[AT_GID]!=aux[AT_EGID] || aux[AT_SECURE]) {
-- env_path = 0;
-- env_preload = 0;
-- libc.secure = 1;
-+ if (!libc.secure) {
-+ env_path = getenv("LD_LIBRARY_PATH");
-+ env_preload = getenv("LD_PRELOAD");
- }
-- libc.page_size = aux[AT_PAGESZ];
-- libc.auxv = auxv;
-
- /* If the main program was already loaded by the kernel,
- * AT_PHDR will point to some location other than the dynamic
-@@ -1523,7 +1557,7 @@ void *__tls_get_addr(size_t *);
- static void *do_dlsym(struct dso *p, const char *s, void *ra)
- {
- size_t i;
-- uint32_t h = 0, gh = 0;
-+ uint32_t h = 0, gh = 0, *ght;
- Sym *sym;
- if (p == head || p == RTLD_DEFAULT || p == RTLD_NEXT) {
- if (p == RTLD_DEFAULT) {
-@@ -1541,9 +1575,9 @@ static void *do_dlsym(struct dso *p, con
- }
- if (invalid_dso_handle(p))
- return 0;
-- if (p->ghashtab) {
-+ if ((ght = p->ghashtab)) {
- gh = gnu_hash(s);
-- sym = gnu_lookup(s, gh, p);
-+ sym = gnu_lookup(gh, ght, p, s);
- } else {
- h = sysv_hash(s);
- sym = sysv_lookup(s, h, p);
-@@ -1553,9 +1587,9 @@ static void *do_dlsym(struct dso *p, con
- if (sym && sym->st_value && (1<<(sym->st_info&0xf) & OK_TYPES))
- return p->base + sym->st_value;
- if (p->deps) for (i=0; p->deps[i]; i++) {
-- if (p->deps[i]->ghashtab) {
-+ if ((ght = p->deps[i]->ghashtab)) {
- if (!gh) gh = gnu_hash(s);
-- sym = gnu_lookup(s, gh, p->deps[i]);
-+ sym = gnu_lookup(gh, ght, p->deps[i], s);
- } else {
- if (!h) h = sysv_hash(s);
- sym = sysv_lookup(s, h, p->deps[i]);
---- a/src/linux/syncfs.c
-+++ b/src/linux/syncfs.c
-@@ -2,7 +2,7 @@
- #include <unistd.h>
- #include "syscall.h"
-
--void syncfs(int fd)
-+int syncfs(int fd)
- {
-- __syscall(SYS_syncfs, fd);
-+ return syscall(SYS_syncfs, fd);
- }
---- /dev/null
-+++ b/src/locale/c_locale.c
-@@ -0,0 +1,15 @@
-+#include "locale_impl.h"
-+#include <stdint.h>
-+
-+static const uint32_t empty_mo[] = { 0x950412de, 0, -1, -1, -1 };
-+
-+const struct __locale_map __c_dot_utf8 = {
-+ .map = empty_mo,
-+ .map_size = sizeof empty_mo,
-+ .name = "C.UTF-8"
-+};
-+
-+const struct __locale_struct __c_locale = { 0 };
-+const struct __locale_struct __c_dot_utf8_locale = {
-+ .cat[LC_CTYPE] = &__c_dot_utf8
-+};
---- a/src/locale/iconv.c
-+++ b/src/locale/iconv.c
-@@ -5,6 +5,7 @@
- #include <stdlib.h>
- #include <limits.h>
- #include <stdint.h>
-+#include "locale_impl.h"
-
- #define UTF_32BE 0300
- #define UTF_16LE 0301
-@@ -165,9 +166,12 @@ size_t iconv(iconv_t cd0, char **restric
- int err;
- unsigned char type = map[-1];
- unsigned char totype = tomap[-1];
-+ locale_t *ploc = &CURRENT_LOCALE, loc = *ploc;
-
- if (!in || !*in || !*inb) return 0;
-
-+ *ploc = UTF8_LOCALE;
-+
- for (; *inb; *in+=l, *inb-=l) {
- c = *(unsigned char *)*in;
- l = 1;
-@@ -431,6 +435,7 @@ size_t iconv(iconv_t cd0, char **restric
- break;
- }
- }
-+ *ploc = loc;
- return x;
- ilseq:
- err = EILSEQ;
-@@ -445,5 +450,6 @@ starved:
- x = -1;
- end:
- errno = err;
-+ *ploc = loc;
- return x;
- }
---- a/src/locale/langinfo.c
-+++ b/src/locale/langinfo.c
-@@ -33,7 +33,8 @@ char *__nl_langinfo_l(nl_item item, loca
- int idx = item & 65535;
- const char *str;
-
-- if (item == CODESET) return "UTF-8";
-+ if (item == CODESET)
-+ return MB_CUR_MAX==1 ? "UTF-8-CODE-UNITS" : "UTF-8";
-
- switch (cat) {
- case LC_NUMERIC:
---- a/src/locale/locale_map.c
-+++ b/src/locale/locale_map.c
-@@ -24,14 +24,6 @@ static const char envvars[][12] = {
- "LC_MESSAGES",
- };
-
--static const uint32_t empty_mo[] = { 0x950412de, 0, -1, -1, -1 };
--
--const struct __locale_map __c_dot_utf8 = {
-- .map = empty_mo,
-- .map_size = sizeof empty_mo,
-- .name = "C.UTF-8"
--};
--
- const struct __locale_map *__get_locale(int cat, const char *val)
- {
- static int lock[2];
-@@ -107,8 +99,8 @@ const struct __locale_map *__get_locale(
- * sake of being able to do message translations at the
- * application level. */
- if (!new && (new = malloc(sizeof *new))) {
-- new->map = empty_mo;
-- new->map_size = sizeof empty_mo;
-+ new->map = __c_dot_utf8.map;
-+ new->map_size = __c_dot_utf8.map_size;
- memcpy(new->name, val, n);
- new->name[n] = 0;
- new->next = loc_head;
---- a/src/locale/newlocale.c
-+++ b/src/locale/newlocale.c
-@@ -3,16 +3,9 @@
- #include "locale_impl.h"
- #include "libc.h"
-
--extern const struct __locale_map __c_dot_utf8;
--
--static const struct __locale_struct c_locale = { 0 };
--static const struct __locale_struct c_dot_utf8_locale = {
-- .cat[LC_CTYPE] = &__c_dot_utf8
--};
--
- int __loc_is_allocated(locale_t loc)
- {
-- return loc && loc != &c_locale && loc != &c_dot_utf8_locale;
-+ return loc && loc != C_LOCALE && loc != UTF8_LOCALE;
- }
-
- locale_t __newlocale(int mask, const char *name, locale_t loc)
-@@ -44,9 +37,9 @@ locale_t __newlocale(int mask, const cha
- }
-
- if (!j)
-- return (locale_t)&c_locale;
-- if (j==1 && tmp.cat[LC_CTYPE]==c_dot_utf8_locale.cat[LC_CTYPE])
-- return (locale_t)&c_dot_utf8_locale;
-+ return C_LOCALE;
-+ if (j==1 && tmp.cat[LC_CTYPE]==&__c_dot_utf8)
-+ return UTF8_LOCALE;
-
- if ((loc = malloc(sizeof *loc))) *loc = tmp;
-
---- a/src/locale/uselocale.c
-+++ b/src/locale/uselocale.c
-@@ -8,9 +8,7 @@ locale_t __uselocale(locale_t new)
- locale_t old = self->locale;
- locale_t global = &libc.global_locale;
-
-- if (new == LC_GLOBAL_LOCALE) new = global;
--
-- self->locale = new;
-+ if (new) self->locale = new == LC_GLOBAL_LOCALE ? global : new;
-
- return old == global ? LC_GLOBAL_LOCALE : old;
- }
---- a/src/malloc/calloc.c
-+++ b/src/malloc/calloc.c
-@@ -1,22 +1,13 @@
- #include <stdlib.h>
- #include <errno.h>
-
-+void *__malloc0(size_t);
-+
- void *calloc(size_t m, size_t n)
- {
-- void *p;
-- size_t *z;
- if (n && m > (size_t)-1/n) {
- errno = ENOMEM;
- return 0;
- }
-- n *= m;
-- p = malloc(n);
-- if (!p) return 0;
-- /* Only do this for non-mmapped chunks */
-- if (((size_t *)p)[-1] & 7) {
-- /* Only write words that are not already zero */
-- m = (n + sizeof *z - 1)/sizeof *z;
-- for (z=p; m; m--, z++) if (*z) *z=0;
-- }
-- return p;
-+ return __malloc0(n * m);
- }
---- /dev/null
-+++ b/src/malloc/expand_heap.c
-@@ -0,0 +1,72 @@
-+#include <limits.h>
-+#include <stdint.h>
-+#include <errno.h>
-+#include <sys/mman.h>
-+#include "libc.h"
-+#include "syscall.h"
-+
-+/* This function returns true if the interval [old,new]
-+ * intersects the 'len'-sized interval below &libc.auxv
-+ * (interpreted as the main-thread stack) or below &b
-+ * (the current stack). It is used to defend against
-+ * buggy brk implementations that can cross the stack. */
-+
-+static int traverses_stack_p(uintptr_t old, uintptr_t new)
-+{
-+ const uintptr_t len = 8<<20;
-+ uintptr_t a, b;
-+
-+ b = (uintptr_t)libc.auxv;
-+ a = b > len ? b-len : 0;
-+ if (new>a && old<b) return 1;
-+
-+ b = (uintptr_t)&b;
-+ a = b > len ? b-len : 0;
-+ if (new>a && old<b) return 1;
-+
-+ return 0;
-+}
-+
-+void *__mmap(void *, size_t, int, int, int, off_t);
-+
-+/* Expand the heap in-place if brk can be used, or otherwise via mmap,
-+ * using an exponential lower bound on growth by mmap to make
-+ * fragmentation asymptotically irrelevant. The size argument is both
-+ * an input and an output, since the caller needs to know the size
-+ * allocated, which will be larger than requested due to page alignment
-+ * and mmap minimum size rules. The caller is responsible for locking
-+ * to prevent concurrent calls. */
-+
-+void *__expand_heap(size_t *pn)
-+{
-+ static uintptr_t brk;
-+ static unsigned mmap_step;
-+ size_t n = *pn;
-+
-+ if (n > SIZE_MAX/2 - PAGE_SIZE) {
-+ errno = ENOMEM;
-+ return 0;
-+ }
-+ n += -n & PAGE_SIZE-1;
-+
-+ if (!brk) {
-+ brk = __syscall(SYS_brk, 0);
-+ brk += -brk & PAGE_SIZE-1;
-+ }
-+
-+ if (n < SIZE_MAX-brk && !traverses_stack_p(brk, brk+n)
-+ && __syscall(SYS_brk, brk+n)==brk+n) {
-+ *pn = n;
-+ brk += n;
-+ return (void *)(brk-n);
-+ }
-+
-+ size_t min = (size_t)PAGE_SIZE << mmap_step/2;
-+ if (n < min) n = min;
-+ void *area = __mmap(0, n, PROT_READ|PROT_WRITE,
-+ MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
-+ if (area == MAP_FAILED) return 0;
-+ *pn = n;
-+ mmap_step++;
-+ return area;
-+}
---- a/src/malloc/lite_malloc.c
-+++ b/src/malloc/lite_malloc.c
-@@ -4,43 +4,47 @@
- #include <errno.h>
- #include "libc.h"
-
--uintptr_t __brk(uintptr_t);
--
- #define ALIGN 16
-
-+void *__expand_heap(size_t *);
-+
- void *__simple_malloc(size_t n)
- {
-- static uintptr_t cur, brk;
-- uintptr_t base, new;
-+ static char *cur, *end;
- static volatile int lock[2];
-- size_t align=1;
-+ size_t align=1, pad;
-+ void *p;
-
- if (!n) n++;
-- if (n > SIZE_MAX/2) goto toobig;
--
- while (align<n && align<ALIGN)
- align += align;
-- n = n + align - 1 & -align;
-
- LOCK(lock);
-- if (!cur) cur = brk = __brk(0)+16;
-- base = cur + align-1 & -align;
-- if (n > SIZE_MAX - PAGE_SIZE - base) goto fail;
-- if (base+n > brk) {
-- new = base+n + PAGE_SIZE-1 & -PAGE_SIZE;
-- if (__brk(new) != new) goto fail;
-- brk = new;
-- }
-- cur = base+n;
-- UNLOCK(lock);
-
-- return (void *)base;
-+ pad = -(uintptr_t)cur & align-1;
-+
-+ if (n <= SIZE_MAX/2 + ALIGN) n += pad;
-+
-+ if (n > end-cur) {
-+ size_t m = n;
-+ char *new = __expand_heap(&m);
-+ if (!new) {
-+ UNLOCK(lock);
-+ return 0;
-+ }
-+ if (new != end) {
-+ cur = new;
-+ n -= pad;
-+ pad = 0;
-+ }
-+ end = new + m;
-+ }
-
--fail:
-+ p = cur + pad;
-+ cur += n;
- UNLOCK(lock);
--toobig:
-- errno = ENOMEM;
-- return 0;
-+ return p;
- }
-
- weak_alias(__simple_malloc, malloc);
-+weak_alias(__simple_malloc, __malloc0);
---- a/src/malloc/malloc.c
-+++ b/src/malloc/malloc.c
-@@ -13,7 +13,6 @@
- #define inline inline __attribute__((always_inline))
- #endif
-
--uintptr_t __brk(uintptr_t);
- void *__mmap(void *, size_t, int, int, int, off_t);
- int __munmap(void *, size_t);
- void *__mremap(void *, size_t, size_t, int, ...);
-@@ -31,13 +30,9 @@ struct bin {
- };
-
- static struct {
-- uintptr_t brk;
-- size_t *heap;
- volatile uint64_t binmap;
- struct bin bins[64];
-- volatile int brk_lock[2];
- volatile int free_lock[2];
-- unsigned mmap_step;
- } mal;
-
-
-@@ -152,69 +147,52 @@ void __dump_heap(int x)
- }
- #endif
-
-+void *__expand_heap(size_t *);
-+
- static struct chunk *expand_heap(size_t n)
- {
-- static int init;
-+ static int heap_lock[2];
-+ static void *end;
-+ void *p;
- struct chunk *w;
-- uintptr_t new;
--
-- lock(mal.brk_lock);
--
-- if (!init) {
-- mal.brk = __brk(0);
--#ifdef SHARED
-- mal.brk = mal.brk + PAGE_SIZE-1 & -PAGE_SIZE;
--#endif
-- mal.brk = mal.brk + 2*SIZE_ALIGN-1 & -SIZE_ALIGN;
-- mal.heap = (void *)mal.brk;
-- init = 1;
-- }
--
-- if (n > SIZE_MAX - mal.brk - 2*PAGE_SIZE) goto fail;
-- new = mal.brk + n + SIZE_ALIGN + PAGE_SIZE - 1 & -PAGE_SIZE;
-- n = new - mal.brk;
--
-- if (__brk(new) != new) {
-- size_t min = (size_t)PAGE_SIZE << mal.mmap_step/2;
-- n += -n & PAGE_SIZE-1;
-- if (n < min) n = min;
-- void *area = __mmap(0, n, PROT_READ|PROT_WRITE,
-- MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
-- if (area == MAP_FAILED) goto fail;
-
-- mal.mmap_step++;
-- area = (char *)area + SIZE_ALIGN - OVERHEAD;
-- w = area;
-+ /* The argument n already accounts for the caller's chunk
-+ * overhead needs, but if the heap can't be extended in-place,
-+ * we need room for an extra zero-sized sentinel chunk. */
-+ n += SIZE_ALIGN;
-+
-+ lock(heap_lock);
-+
-+ p = __expand_heap(&n);
-+ if (!p) {
-+ unlock(heap_lock);
-+ return 0;
-+ }
-+
-+ /* If not just expanding existing space, we need to make a
-+ * new sentinel chunk below the allocated space. */
-+ if (p != end) {
-+ /* Valid/safe because of the prologue increment. */
- n -= SIZE_ALIGN;
-+ p = (char *)p + SIZE_ALIGN;
-+ w = MEM_TO_CHUNK(p);
- w->psize = 0 | C_INUSE;
-- w->csize = n | C_INUSE;
-- w = NEXT_CHUNK(w);
-- w->psize = n | C_INUSE;
-- w->csize = 0 | C_INUSE;
--
-- unlock(mal.brk_lock);
--
-- return area;
- }
-
-- w = MEM_TO_CHUNK(mal.heap);
-- w->psize = 0 | C_INUSE;
--
-- w = MEM_TO_CHUNK(new);
-+ /* Record new heap end and fill in footer. */
-+ end = (char *)p + n;
-+ w = MEM_TO_CHUNK(end);
- w->psize = n | C_INUSE;
- w->csize = 0 | C_INUSE;
-
-- w = MEM_TO_CHUNK(mal.brk);
-+ /* Fill in header, which may be new or may be replacing a
-+ * zero-size sentinel header at the old end-of-heap. */
-+ w = MEM_TO_CHUNK(p);
- w->csize = n | C_INUSE;
-- mal.brk = new;
--
-- unlock(mal.brk_lock);
-+
-+ unlock(heap_lock);
-
- return w;
--fail:
-- unlock(mal.brk_lock);
-- errno = ENOMEM;
-- return 0;
- }
-
- static int adjust_size(size_t *n)
-@@ -378,6 +356,17 @@ void *malloc(size_t n)
- return CHUNK_TO_MEM(c);
- }
-
-+void *__malloc0(size_t n)
-+{
-+ void *p = malloc(n);
-+ if (p && !IS_MMAPPED(MEM_TO_CHUNK(p))) {
-+ size_t *z;
-+ n = (n + sizeof *z - 1)/sizeof *z;
-+ for (z=p; n; n--, z++) if (*z) *z=0;
-+ }
-+ return p;
-+}
-+
- void *realloc(void *p, size_t n)
- {
- struct chunk *self, *next;
---- a/src/misc/syslog.c
-+++ b/src/misc/syslog.c
-@@ -48,12 +48,8 @@ void closelog(void)
-
- static void __openlog()
- {
-- int fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
-- if (fd < 0) return;
-- if (connect(fd, (void *)&log_addr, sizeof log_addr) < 0)
-- close(fd);
-- else
-- log_fd = fd;
-+ log_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
-+ if (log_fd >= 0) connect(log_fd, (void *)&log_addr, sizeof log_addr);
- }
-
- void openlog(const char *ident, int opt, int facility)
-@@ -78,6 +74,11 @@ void openlog(const char *ident, int opt,
- pthread_setcancelstate(cs, 0);
- }
-
-+static int is_lost_conn(int e)
-+{
-+ return e==ECONNREFUSED || e==ECONNRESET || e==ENOTCONN || e==EPIPE;
-+}
-+
- static void _vsyslog(int priority, const char *message, va_list ap)
- {
- char timebuf[16];
-@@ -107,7 +108,10 @@ static void _vsyslog(int priority, const
- if (l2 >= sizeof buf - l) l = sizeof buf - 1;
- else l += l2;
- if (buf[l-1] != '\n') buf[l++] = '\n';
-- if (send(log_fd, buf, l, 0) < 0 && (log_opt & LOG_CONS)) {
-+ if (send(log_fd, buf, l, 0) < 0 && (!is_lost_conn(errno)
-+ || connect(log_fd, (void *)&log_addr, sizeof log_addr) < 0
-+ || send(log_fd, buf, l, 0) < 0)
-+ && (log_opt & LOG_CONS)) {
- fd = open("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
- if (fd >= 0) {
- dprintf(fd, "%.*s", l-hlen, buf+hlen);
---- a/src/multibyte/btowc.c
-+++ b/src/multibyte/btowc.c
-@@ -1,7 +1,10 @@
- #include <stdio.h>
- #include <wchar.h>
-+#include <stdlib.h>
-+#include "internal.h"
-
- wint_t btowc(int c)
- {
-- return c<128U ? c : EOF;
-+ int b = (unsigned char)c;
-+ return b<128U ? b : (MB_CUR_MAX==1 && c!=EOF) ? CODEUNIT(c) : WEOF;
- }
---- a/src/multibyte/internal.h
-+++ b/src/multibyte/internal.h
-@@ -23,3 +23,10 @@ extern const uint32_t bittab[];
-
- #define SA 0xc2u
- #define SB 0xf4u
-+
-+/* Arbitrary encoding for representing code units instead of characters. */
-+#define CODEUNIT(c) (0xdfff & (signed char)(c))
-+#define IS_CODEUNIT(c) ((unsigned)(c)-0xdf80 < 0x80)
-+
-+/* Get inline definition of MB_CUR_MAX. */
-+#include "locale_impl.h"
---- a/src/multibyte/mbrtowc.c
-+++ b/src/multibyte/mbrtowc.c
-@@ -4,6 +4,7 @@
- * unnecessary.
- */
-
-+#include <stdlib.h>
- #include <wchar.h>
- #include <errno.h>
- #include "internal.h"
-@@ -27,6 +28,7 @@ size_t mbrtowc(wchar_t *restrict wc, con
- if (!n) return -2;
- if (!c) {
- if (*s < 0x80) return !!(*wc = *s);
-+ if (MB_CUR_MAX==1) return (*wc = CODEUNIT(*s)), 1;
- if (*s-SA > SB-SA) goto ilseq;
- c = bittab[*s++-SA]; n--;
- }
---- a/src/multibyte/mbsrtowcs.c
-+++ b/src/multibyte/mbsrtowcs.c
-@@ -7,6 +7,8 @@
- #include <stdint.h>
- #include <wchar.h>
- #include <errno.h>
-+#include <string.h>
-+#include <stdlib.h>
- #include "internal.h"
-
- size_t mbsrtowcs(wchar_t *restrict ws, const char **restrict src, size_t wn, mbstate_t *restrict st)
-@@ -24,6 +26,23 @@ size_t mbsrtowcs(wchar_t *restrict ws, c
- }
- }
-
-+ if (MB_CUR_MAX==1) {
-+ if (!ws) return strlen((const char *)s);
-+ for (;;) {
-+ if (!wn) {
-+ *src = (const void *)s;
-+ return wn0;
-+ }
-+ if (!*s) break;
-+ c = *s++;
-+ *ws++ = CODEUNIT(c);
-+ wn--;
-+ }
-+ *ws = 0;
-+ *src = 0;
-+ return wn0-wn;
-+ }
-+
- if (!ws) for (;;) {
- if (*s-1u < 0x7f && (uintptr_t)s%4 == 0) {
- while (!(( *(uint32_t*)s | *(uint32_t*)s-0x01010101) & 0x80808080)) {
---- a/src/multibyte/mbtowc.c
-+++ b/src/multibyte/mbtowc.c
-@@ -4,6 +4,7 @@
- * unnecessary.
- */
-
-+#include <stdlib.h>
- #include <wchar.h>
- #include <errno.h>
- #include "internal.h"
-@@ -19,6 +20,7 @@ int mbtowc(wchar_t *restrict wc, const c
- if (!wc) wc = &dummy;
-
- if (*s < 0x80) return !!(*wc = *s);
-+ if (MB_CUR_MAX==1) return (*wc = CODEUNIT(*s)), 1;
- if (*s-SA > SB-SA) goto ilseq;
- c = bittab[*s++-SA];
-
---- a/src/multibyte/wcrtomb.c
-+++ b/src/multibyte/wcrtomb.c
-@@ -4,8 +4,10 @@
- * unnecessary.
- */
-
-+#include <stdlib.h>
- #include <wchar.h>
- #include <errno.h>
-+#include "internal.h"
-
- size_t wcrtomb(char *restrict s, wchar_t wc, mbstate_t *restrict st)
- {
-@@ -13,6 +15,13 @@ size_t wcrtomb(char *restrict s, wchar_t
- if ((unsigned)wc < 0x80) {
- *s = wc;
- return 1;
-+ } else if (MB_CUR_MAX == 1) {
-+ if (!IS_CODEUNIT(wc)) {
-+ errno = EILSEQ;
-+ return -1;
-+ }
-+ *s = wc;
-+ return 1;
- } else if ((unsigned)wc < 0x800) {
- *s++ = 0xc0 | (wc>>6);
- *s = 0x80 | (wc&0x3f);
---- a/src/multibyte/wctob.c
-+++ b/src/multibyte/wctob.c
-@@ -1,8 +1,10 @@
--#include <stdio.h>
- #include <wchar.h>
-+#include <stdlib.h>
-+#include "internal.h"
-
- int wctob(wint_t c)
- {
- if (c < 128U) return c;
-+ if (MB_CUR_MAX==1 && IS_CODEUNIT(c)) return (unsigned char)c;
- return EOF;
- }
---- a/src/network/ns_parse.c
-+++ b/src/network/ns_parse.c
-@@ -95,7 +95,7 @@ int ns_skiprr(const unsigned char *ptr,
- p += r;
- }
- }
-- return ptr - p;
-+ return p - ptr;
- bad:
- errno = EMSGSIZE;
- return -1;
---- a/src/passwd/nscd_query.c
-+++ b/src/passwd/nscd_query.c
-@@ -32,6 +32,7 @@ FILE *__nscd_query(int32_t req, const ch
- },
- .msg_iovlen = 2
- };
-+ int errno_save = errno;
-
- *swap = 0;
- retry:
-@@ -50,11 +51,14 @@ retry:
- return f;
-
- if (connect(fd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
-- /* If there isn't a running nscd we return -1 to indicate that
-- * that is precisely what happened
-- */
-- if (errno == EACCES || errno == ECONNREFUSED || errno == ENOENT)
-+ /* If there isn't a running nscd we simulate a "not found"
-+ * result and the caller is responsible for calling
-+ * fclose on the (unconnected) socket. The value of
-+ * errno must be left unchanged in this case. */
-+ if (errno == EACCES || errno == ECONNREFUSED || errno == ENOENT) {
-+ errno = errno_save;
- return f;
-+ }
- goto error;
- }
-
---- /dev/null
-+++ b/src/process/sh/vfork.s
-@@ -0,0 +1,23 @@
-+.global __vfork
-+.weak vfork
-+.type __vfork,@function
-+.type vfork,@function
-+__vfork:
-+vfork:
-+ mov #95, r3
-+ add r3, r3
-+
-+ trapa #31
-+ or r0, r0
-+ or r0, r0
-+ or r0, r0
-+ or r0, r0
-+ or r0, r0
-+
-+ mov r0, r4
-+ mov.l 1f, r0
-+2: braf r0
-+ nop
-+ .align 2
-+ .hidden __syscall_ret
-+1: .long __syscall_ret@PLT-(2b+4-.)
---- a/src/regex/fnmatch.c
-+++ b/src/regex/fnmatch.c
-@@ -18,6 +18,7 @@
- #include <stdlib.h>
- #include <wchar.h>
- #include <wctype.h>
-+#include "locale_impl.h"
-
- #define END 0
- #define UNMATCHABLE -2
-@@ -229,7 +230,7 @@ static int fnmatch_internal(const char *
- * On illegal sequences we may get it wrong, but in that case
- * we necessarily have a matching failure anyway. */
- for (s=endstr; s>str && tailcnt; tailcnt--) {
-- if (s[-1] < 128U) s--;
-+ if (s[-1] < 128U || MB_CUR_MAX==1) s--;
- else while ((unsigned char)*--s-0x80U<0x40 && s>str);
- }
- if (tailcnt) return FNM_NOMATCH;
---- a/src/signal/sh/restore.s
-+++ b/src/signal/sh/restore.s
-@@ -2,7 +2,7 @@
- .type __restore, @function
- __restore:
- mov #119, r3 !__NR_sigreturn
-- trapa #16
-+ trapa #31
-
- or r0, r0
- or r0, r0
-@@ -15,7 +15,7 @@ __restore:
- __restore_rt:
- mov #100, r3 !__NR_rt_sigreturn
- add #73, r3
-- trapa #16
-+ trapa #31
-
- or r0, r0
- or r0, r0
---- a/src/stdio/__fdopen.c
-+++ b/src/stdio/__fdopen.c
-@@ -54,13 +54,7 @@ FILE *__fdopen(int fd, const char *mode)
- if (!libc.threaded) f->lock = -1;
-
- /* Add new FILE to open file list */
-- OFLLOCK();
-- f->next = libc.ofl_head;
-- if (libc.ofl_head) libc.ofl_head->prev = f;
-- libc.ofl_head = f;
-- OFLUNLOCK();
--
-- return f;
-+ return __ofl_add(f);
- }
-
- weak_alias(__fdopen, fdopen);
---- a/src/stdio/__stdio_exit.c
-+++ b/src/stdio/__stdio_exit.c
-@@ -16,8 +16,7 @@ static void close_file(FILE *f)
- void __stdio_exit(void)
- {
- FILE *f;
-- OFLLOCK();
-- for (f=libc.ofl_head; f; f=f->next) close_file(f);
-+ for (f=*__ofl_lock(); f; f=f->next) close_file(f);
- close_file(__stdin_used);
- close_file(__stdout_used);
- }
---- a/src/stdio/__stdio_read.c
-+++ b/src/stdio/__stdio_read.c
-@@ -1,12 +1,5 @@
- #include "stdio_impl.h"
- #include <sys/uio.h>
--#include <pthread.h>
--
--static void cleanup(void *p)
--{
-- FILE *f = p;
-- if (!f->lockcount) __unlockfile(f);
--}
-
- size_t __stdio_read(FILE *f, unsigned char *buf, size_t len)
- {
-@@ -16,9 +9,7 @@ size_t __stdio_read(FILE *f, unsigned ch
- };
- ssize_t cnt;
-
-- pthread_cleanup_push(cleanup, f);
-- cnt = syscall_cp(SYS_readv, f->fd, iov, 2);
-- pthread_cleanup_pop(0);
-+ cnt = syscall(SYS_readv, f->fd, iov, 2);
- if (cnt <= 0) {
- f->flags |= F_EOF ^ ((F_ERR^F_EOF) & cnt);
- return cnt;
---- a/src/stdio/__stdio_write.c
-+++ b/src/stdio/__stdio_write.c
-@@ -1,12 +1,5 @@
- #include "stdio_impl.h"
- #include <sys/uio.h>
--#include <pthread.h>
--
--static void cleanup(void *p)
--{
-- FILE *f = p;
-- if (!f->lockcount) __unlockfile(f);
--}
-
- size_t __stdio_write(FILE *f, const unsigned char *buf, size_t len)
- {
-@@ -19,9 +12,7 @@ size_t __stdio_write(FILE *f, const unsi
- int iovcnt = 2;
- ssize_t cnt;
- for (;;) {
-- pthread_cleanup_push(cleanup, f);
-- cnt = syscall_cp(SYS_writev, f->fd, iov, iovcnt);
-- pthread_cleanup_pop(0);
-+ cnt = syscall(SYS_writev, f->fd, iov, iovcnt);
- if (cnt == rem) {
- f->wend = f->buf + f->buf_size;
- f->wpos = f->wbase = f->buf;
-@@ -34,11 +25,8 @@ size_t __stdio_write(FILE *f, const unsi
- }
- rem -= cnt;
- if (cnt > iov[0].iov_len) {
-- f->wpos = f->wbase = f->buf;
- cnt -= iov[0].iov_len;
- iov++; iovcnt--;
-- } else if (iovcnt == 2) {
-- f->wbase += cnt;
- }
- iov[0].iov_base = (char *)iov[0].iov_base + cnt;
- iov[0].iov_len -= cnt;
---- a/src/stdio/fclose.c
-+++ b/src/stdio/fclose.c
-@@ -14,11 +14,11 @@ int fclose(FILE *f)
- __unlist_locked_file(f);
-
- if (!(perm = f->flags & F_PERM)) {
-- OFLLOCK();
-+ FILE **head = __ofl_lock();
- if (f->prev) f->prev->next = f->next;
- if (f->next) f->next->prev = f->prev;
-- if (libc.ofl_head == f) libc.ofl_head = f->next;
-- OFLUNLOCK();
-+ if (*head == f) *head = f->next;
-+ __ofl_unlock();
- }
-
- r = fflush(f);
---- a/src/stdio/fflush.c
-+++ b/src/stdio/fflush.c
-@@ -35,13 +35,12 @@ int fflush(FILE *f)
-
- r = __stdout_used ? fflush(__stdout_used) : 0;
-
-- OFLLOCK();
-- for (f=libc.ofl_head; f; f=f->next) {
-+ for (f=*__ofl_lock(); f; f=f->next) {
- FLOCK(f);
- if (f->wpos > f->wbase) r |= __fflush_unlocked(f);
- FUNLOCK(f);
- }
-- OFLUNLOCK();
-+ __ofl_unlock();
-
- return r;
- }
---- a/src/stdio/fgetwc.c
-+++ b/src/stdio/fgetwc.c
-@@ -1,8 +1,9 @@
- #include "stdio_impl.h"
-+#include "locale_impl.h"
- #include <wchar.h>
- #include <errno.h>
-
--wint_t __fgetwc_unlocked(FILE *f)
-+static wint_t __fgetwc_unlocked_internal(FILE *f)
- {
- mbstate_t st = { 0 };
- wchar_t wc;
-@@ -10,8 +11,6 @@ wint_t __fgetwc_unlocked(FILE *f)
- unsigned char b;
- size_t l;
-
-- f->mode |= f->mode+1;
--
- /* Convert character from buffer if possible */
- if (f->rpos < f->rend) {
- l = mbrtowc(&wc, (void *)f->rpos, f->rend - f->rpos, &st);
-@@ -39,6 +38,16 @@ wint_t __fgetwc_unlocked(FILE *f)
- return wc;
- }
-
-+wint_t __fgetwc_unlocked(FILE *f)
-+{
-+ locale_t *ploc = &CURRENT_LOCALE, loc = *ploc;
-+ if (f->mode <= 0) fwide(f, 1);
-+ *ploc = f->locale;
-+ wchar_t wc = __fgetwc_unlocked_internal(f);
-+ *ploc = loc;
-+ return wc;
-+}
-+
- wint_t fgetwc(FILE *f)
- {
- wint_t c;
---- a/src/stdio/fmemopen.c
-+++ b/src/stdio/fmemopen.c
-@@ -110,11 +110,5 @@ FILE *fmemopen(void *restrict buf, size_
-
- if (!libc.threaded) f->lock = -1;
-
-- OFLLOCK();
-- f->next = libc.ofl_head;
-- if (libc.ofl_head) libc.ofl_head->prev = f;
-- libc.ofl_head = f;
-- OFLUNLOCK();
--
-- return f;
-+ return __ofl_add(f);
- }
---- a/src/stdio/fopen.c
-+++ b/src/stdio/fopen.c
-@@ -18,7 +18,7 @@ FILE *fopen(const char *restrict filenam
- /* Compute the flags to pass to open() */
- flags = __fmodeflags(mode);
-
-- fd = sys_open_cp(filename, flags, 0666);
-+ fd = sys_open(filename, flags, 0666);
- if (fd < 0) return 0;
- if (flags & O_CLOEXEC)
- __syscall(SYS_fcntl, fd, F_SETFD, FD_CLOEXEC);
---- a/src/stdio/fputwc.c
-+++ b/src/stdio/fputwc.c
-@@ -1,4 +1,5 @@
- #include "stdio_impl.h"
-+#include "locale_impl.h"
- #include <wchar.h>
- #include <limits.h>
- #include <ctype.h>
-@@ -7,8 +8,10 @@ wint_t __fputwc_unlocked(wchar_t c, FILE
- {
- char mbc[MB_LEN_MAX];
- int l;
-+ locale_t *ploc = &CURRENT_LOCALE, loc = *ploc;
-
-- f->mode |= f->mode+1;
-+ if (f->mode <= 0) fwide(f, 1);
-+ *ploc = f->locale;
-
- if (isascii(c)) {
- c = putc_unlocked(c, f);
-@@ -20,6 +23,8 @@ wint_t __fputwc_unlocked(wchar_t c, FILE
- l = wctomb(mbc, c);
- if (l < 0 || __fwritex((void *)mbc, l, f) < l) c = WEOF;
- }
-+ if (c==WEOF) f->flags |= F_ERR;
-+ *ploc = loc;
- return c;
- }
-
---- a/src/stdio/fputws.c
-+++ b/src/stdio/fputws.c
-@@ -1,23 +1,28 @@
- #include "stdio_impl.h"
-+#include "locale_impl.h"
- #include <wchar.h>
-
- int fputws(const wchar_t *restrict ws, FILE *restrict f)
- {
- unsigned char buf[BUFSIZ];
- size_t l=0;
-+ locale_t *ploc = &CURRENT_LOCALE, loc = *ploc;
-
- FLOCK(f);
-
-- f->mode |= f->mode+1;
-+ fwide(f, 1);
-+ *ploc = f->locale;
-
- while (ws && (l = wcsrtombs((void *)buf, (void*)&ws, sizeof buf, 0))+1 > 1)
- if (__fwritex(buf, l, f) < l) {
- FUNLOCK(f);
-+ *ploc = loc;
- return -1;
- }
-
- FUNLOCK(f);
-
-+ *ploc = loc;
- return l; /* 0 or -1 */
- }
-
---- a/src/stdio/fwide.c
-+++ b/src/stdio/fwide.c
-@@ -1,13 +1,14 @@
--#include <wchar.h>
- #include "stdio_impl.h"
--
--#define SH (8*sizeof(int)-1)
--#define NORMALIZE(x) ((x)>>SH | -((-(x))>>SH))
-+#include "locale_impl.h"
-
- int fwide(FILE *f, int mode)
- {
- FLOCK(f);
-- if (!f->mode) f->mode = NORMALIZE(mode);
-+ if (mode) {
-+ if (!f->locale) f->locale = MB_CUR_MAX==1
-+ ? C_LOCALE : UTF8_LOCALE;
-+ if (!f->mode) f->mode = mode>0 ? 1 : -1;
-+ }
- mode = f->mode;
- FUNLOCK(f);
- return mode;
---- /dev/null
-+++ b/src/stdio/ofl.c
-@@ -0,0 +1,16 @@
-+#include "stdio_impl.h"
-+#include "libc.h"
-+
-+static FILE *ofl_head;
-+static volatile int ofl_lock[2];
-+
-+FILE **__ofl_lock()
-+{
-+ LOCK(ofl_lock);
-+ return &ofl_head;
-+}
-+
-+void __ofl_unlock()
-+{
-+ UNLOCK(ofl_lock);
-+}
---- /dev/null
-+++ b/src/stdio/ofl_add.c
-@@ -0,0 +1,11 @@
-+#include "stdio_impl.h"
-+
-+FILE *__ofl_add(FILE *f)
-+{
-+ FILE **head = __ofl_lock();
-+ f->next = *head;
-+ if (*head) (*head)->prev = f;
-+ *head = f;
-+ __ofl_unlock();
-+ return f;
-+}
---- a/src/stdio/open_memstream.c
-+++ b/src/stdio/open_memstream.c
-@@ -79,11 +79,5 @@ FILE *open_memstream(char **bufp, size_t
-
- if (!libc.threaded) f->lock = -1;
-
-- OFLLOCK();
-- f->next = libc.ofl_head;
-- if (libc.ofl_head) libc.ofl_head->prev = f;
-- libc.ofl_head = f;
-- OFLUNLOCK();
--
-- return f;
-+ return __ofl_add(f);
- }
---- a/src/stdio/open_wmemstream.c
-+++ b/src/stdio/open_wmemstream.c
-@@ -81,11 +81,5 @@ FILE *open_wmemstream(wchar_t **bufp, si
-
- if (!libc.threaded) f->lock = -1;
-
-- OFLLOCK();
-- f->next = libc.ofl_head;
-- if (libc.ofl_head) libc.ofl_head->prev = f;
-- libc.ofl_head = f;
-- OFLUNLOCK();
--
-- return f;
-+ return __ofl_add(f);
- }
---- a/src/stdio/ungetwc.c
-+++ b/src/stdio/ungetwc.c
-@@ -1,4 +1,5 @@
- #include "stdio_impl.h"
-+#include "locale_impl.h"
- #include <wchar.h>
- #include <limits.h>
- #include <ctype.h>
-@@ -8,21 +9,19 @@ wint_t ungetwc(wint_t c, FILE *f)
- {
- unsigned char mbc[MB_LEN_MAX];
- int l=1;
--
-- if (c == WEOF) return c;
--
-- /* Try conversion early so we can fail without locking if invalid */
-- if (!isascii(c) && (l = wctomb((void *)mbc, c)) < 0)
-- return WEOF;
-+ locale_t *ploc = &CURRENT_LOCALE, loc = *ploc;
-
- FLOCK(f);
-
-- f->mode |= f->mode+1;
-+ if (f->mode <= 0) fwide(f, 1);
-+ *ploc = f->locale;
-
- if (!f->rpos) __toread(f);
-- if (!f->rpos || f->rpos < f->buf - UNGET + l) {
-+ if (!f->rpos || f->rpos < f->buf - UNGET + l || c == WEOF ||
-+ (!isascii(c) && (l = wctomb((void *)mbc, c)) < 0)) {
- FUNLOCK(f);
-- return EOF;
-+ *ploc = loc;
-+ return WEOF;
- }
-
- if (isascii(c)) *--f->rpos = c;
-@@ -31,5 +30,6 @@ wint_t ungetwc(wint_t c, FILE *f)
- f->flags &= ~F_EOF;
-
- FUNLOCK(f);
-+ *ploc = loc;
- return c;
- }
---- a/src/stdio/vfwprintf.c
-+++ b/src/stdio/vfwprintf.c
-@@ -293,7 +293,10 @@ static int wprintf_core(FILE *f, const w
- if ((fl&LEFT_ADJ)) fprintf(f, "%.*s", w-p, "");
- l=w;
- continue;
-+ case 'm':
-+ arg.p = strerror(errno);
- case 's':
-+ if (!arg.p) arg.p = "(null)";
- bs = arg.p;
- if (p<0) p = INT_MAX;
- for (i=l=0; l<p && (i=mbtowc(&wc, bs, MB_LEN_MAX))>0; bs+=i, l++);
-@@ -356,7 +359,7 @@ int vfwprintf(FILE *restrict f, const wc
- }
-
- FLOCK(f);
-- f->mode |= f->mode+1;
-+ fwide(f, 1);
- olderr = f->flags & F_ERR;
- f->flags &= ~F_ERR;
- ret = wprintf_core(f, fmt, &ap2, nl_arg, nl_type);
---- a/src/stdio/vfwscanf.c
-+++ b/src/stdio/vfwscanf.c
-@@ -104,7 +104,7 @@ int vfwscanf(FILE *restrict f, const wch
-
- FLOCK(f);
-
-- f->mode |= f->mode+1;
-+ fwide(f, 1);
-
- for (p=fmt; *p; p++) {
-
---- a/src/string/strverscmp.c
-+++ b/src/string/strverscmp.c
-@@ -2,40 +2,33 @@
- #include <ctype.h>
- #include <string.h>
-
--int strverscmp(const char *l, const char *r)
-+int strverscmp(const char *l0, const char *r0)
- {
-- int haszero=1;
-- while (*l==*r) {
-- if (!*l) return 0;
-+ const unsigned char *l = (const void *)l0;
-+ const unsigned char *r = (const void *)r0;
-+ size_t i, dp, j;
-+ int z = 1;
-
-- if (*l=='0') {
-- if (haszero==1) {
-- haszero=0;
-- }
-- } else if (isdigit(*l)) {
-- if (haszero==1) {
-- haszero=2;
-- }
-- } else {
-- haszero=1;
-- }
-- l++; r++;
-+ /* Find maximal matching prefix and track its maximal digit
-+ * suffix and whether those digits are all zeros. */
-+ for (dp=i=0; l[i]==r[i]; i++) {
-+ int c = l[i];
-+ if (!c) return 0;
-+ if (!isdigit(c)) dp=i+1, z=1;
-+ else if (c!='0') z=0;
- }
-- if (haszero==1 && (*l=='0' || *r=='0')) {
-- haszero=0;
-- }
-- if ((isdigit(*l) && isdigit(*r) ) && haszero) {
-- size_t lenl=0, lenr=0;
-- while (isdigit(l[lenl]) ) lenl++;
-- while (isdigit(r[lenr]) ) lenr++;
-- if (lenl==lenr) {
-- return (*l - *r);
-- } else if (lenl>lenr) {
-- return 1;
-- } else {
-- return -1;
-- }
-- } else {
-- return (*l - *r);
-+
-+ if (l[dp]!='0' && r[dp]!='0') {
-+ /* If we're not looking at a digit sequence that began
-+ * with a zero, longest digit string is greater. */
-+ for (j=i; isdigit(l[j]); j++)
-+ if (!isdigit(r[j])) return 1;
-+ if (isdigit(r[j])) return -1;
-+ } else if (z && dp<i && (isdigit(l[i]) || isdigit(r[i]))) {
-+ /* Otherwise, if common prefix of digit sequence is
-+ * all zeros, digits order less than non-digits. */
-+ return (unsigned char)(l[i]-'0') - (unsigned char)(r[i]-'0');
- }
-+
-+ return l[i] - r[i];
- }
---- a/src/thread/__tls_get_addr.c
-+++ b/src/thread/__tls_get_addr.c
-@@ -8,9 +8,9 @@ void *__tls_get_addr(size_t *v)
- __attribute__((__visibility__("hidden")))
- void *__tls_get_new(size_t *);
- if (v[0]<=(size_t)self->dtv[0])
-- return (char *)self->dtv[v[0]]+v[1];
-+ return (char *)self->dtv[v[0]]+v[1]+DTP_OFFSET;
- return __tls_get_new(v);
- #else
-- return (char *)self->dtv[1]+v[1];
-+ return (char *)self->dtv[1]+v[1]+DTP_OFFSET;
- #endif
- }
---- /dev/null
-+++ b/src/thread/__unmapself.c
-@@ -0,0 +1,29 @@
-+#include "pthread_impl.h"
-+#include "atomic.h"
-+#include "syscall.h"
-+/* cheat and reuse CRTJMP macro from dynlink code */
-+#include "dynlink.h"
-+
-+static volatile int lock;
-+static void *unmap_base;
-+static size_t unmap_size;
-+static char shared_stack[256];
-+
-+static void do_unmap()
-+{
-+ __syscall(SYS_munmap, unmap_base, unmap_size);
-+ __syscall(SYS_exit);
-+}
-+
-+void __unmapself(void *base, size_t size)
-+{
-+ int tid=__pthread_self()->tid;
-+ char *stack = shared_stack + sizeof shared_stack;
-+ stack -= (uintptr_t)stack % 16;
-+ while (lock || a_cas(&lock, 0, tid))
-+ a_spin();
-+ __syscall(SYS_set_tid_address, &lock);
-+ unmap_base = base;
-+ unmap_size = size;
-+ CRTJMP(do_unmap, stack);
-+}
---- a/src/thread/mips/__unmapself.s
-+++ b/src/thread/mips/__unmapself.s
-@@ -2,6 +2,7 @@
- .global __unmapself
- .type __unmapself,@function
- __unmapself:
-+ move $sp, $25
- li $2, 4091
- syscall
- li $4, 0
---- a/src/thread/pthread_create.c
-+++ b/src/thread/pthread_create.c
-@@ -191,8 +191,9 @@ int __pthread_create(pthread_t *restrict
- if (!libc.can_do_threads) return ENOSYS;
- self = __pthread_self();
- if (!libc.threaded) {
-- for (FILE *f=libc.ofl_head; f; f=f->next)
-+ for (FILE *f=*__ofl_lock(); f; f=f->next)
- init_file_lock(f);
-+ __ofl_unlock();
- init_file_lock(__stdin_used);
- init_file_lock(__stdout_used);
- init_file_lock(__stderr_used);
-@@ -231,7 +232,8 @@ int __pthread_create(pthread_t *restrict
- if (guard) {
- map = __mmap(0, size, PROT_NONE, MAP_PRIVATE|MAP_ANON, -1, 0);
- if (map == MAP_FAILED) goto fail;
-- if (__mprotect(map+guard, size-guard, PROT_READ|PROT_WRITE)) {
-+ if (__mprotect(map+guard, size-guard, PROT_READ|PROT_WRITE)
-+ && errno != ENOSYS) {
- __munmap(map, size);
- goto fail;
- }
---- a/src/thread/sh/__set_thread_area.s
-+++ b/src/thread/sh/__set_thread_area.s
-@@ -1,6 +0,0 @@
--.global __set_thread_area
--.type __set_thread_area, @function
--__set_thread_area:
-- ldc r4, gbr
-- rts
-- mov #0, r0
---- a/src/thread/sh/__unmapself.s
-+++ b/src/thread/sh/__unmapself.s
-@@ -1,9 +1,9 @@
- .text
--.global __unmapself
--.type __unmapself, @function
--__unmapself:
-+.global __unmapself_sh_mmu
-+.type __unmapself_sh_mmu, @function
-+__unmapself_sh_mmu:
- mov #91, r3 ! SYS_munmap
-- trapa #18
-+ trapa #31
-
- or r0, r0
- or r0, r0
-@@ -13,7 +13,7 @@ __unmapself:
-
- mov #1, r3 ! SYS_exit
- mov #0, r4
-- trapa #17
-+ trapa #31
-
- or r0, r0
- or r0, r0
---- a/src/thread/sh/clone.s
-+++ b/src/thread/sh/clone.s
-@@ -17,7 +17,7 @@ __clone:
- mov.l @r15, r6 ! r6 = ptid
- mov.l @(8,r15), r7 ! r7 = ctid
- mov.l @(4,r15), r0 ! r0 = tls
-- trapa #21
-+ trapa #31
-
- or r0, r0
- or r0, r0
-@@ -38,7 +38,7 @@ __clone:
-
- mov #1, r3 ! __NR_exit
- mov r0, r4
-- trapa #17
-+ trapa #31
-
- or r0, r0
- or r0, r0
---- a/src/thread/sh/syscall_cp.s
-+++ b/src/thread/sh/syscall_cp.s
-@@ -31,7 +31,7 @@ L1: .long __cancel@PLT-(1b-.)
- mov.l @(4,r15), r7
- mov.l @(8,r15), r0
- mov.l @(12,r15), r1
-- trapa #22
-+ trapa #31
-
- __cp_end:
- ! work around hardware bug
---- a/src/time/__tz.c
-+++ b/src/time/__tz.c
-@@ -125,7 +125,8 @@ static void do_tzset()
- "/usr/share/zoneinfo/\0/share/zoneinfo/\0/etc/zoneinfo/\0";
-
- s = getenv("TZ");
-- if (!s || !*s) s = "/etc/localtime";
-+ if (!s) s = "/etc/localtime";
-+ if (!*s) s = __gmt;
-
- if (old_tz && !strcmp(s, old_tz)) return;
-
---- a/src/unistd/sh/pipe.s
-+++ b/src/unistd/sh/pipe.s
-@@ -2,7 +2,7 @@
- .type pipe, @function
- pipe:
- mov #42, r3
-- trapa #17
-+ trapa #31
-
- ! work around hardware bug
- or r0, r0
---- /dev/null
-+++ b/tools/ld.musl-clang.in
-@@ -0,0 +1,51 @@
-+#!/bin/sh
-+cc="@CC@"
-+libc_lib="@LIBDIR@"
-+ldso="@LDSO@"
-+cleared=
-+shared=
-+userlinkdir=
-+userlink=
-+
-+for x ; do
-+ test "$cleared" || set -- ; cleared=1
-+
-+ case "$x" in
-+ -L-user-start)
-+ userlinkdir=1
-+ ;;
-+ -L-user-end)
-+ userlinkdir=
-+ ;;
-+ -L*)
-+ test "$userlinkdir" && set -- "$@" "$x"
-+ ;;
-+ -l-user-start)
-+ userlink=1
-+ ;;
-+ -l-user-end)
-+ userlink=
-+ ;;
-+ crtbegin*.o|crtend*.o)
-+ set -- "$@" $($cc -print-file-name=$x)
-+ ;;
-+ -lgcc|-lgcc_eh)
-+ file=lib${x#-l}.a
-+ set -- "$@" $($cc -print-file-name=$file)
-+ ;;
-+ -l*)
-+ test "$userlink" && set -- "$@" "$x"
-+ ;;
-+ -shared)
-+ shared=1
-+ set -- "$@" -shared
-+ ;;
-+ -sysroot=*|--sysroot=*)
-+ ;;
-+ *)
-+ set -- "$@" "$x"
-+ ;;
-+ esac
-+done
-+
-+exec $($cc -print-prog-name=ld) -nostdlib "$@" -lc -dynamic-linker "$ldso"
---- /dev/null
-+++ b/tools/musl-clang.in
-@@ -0,0 +1,35 @@
-+#!/bin/sh
-+cc="@CC@"
-+libc="@PREFIX@"
-+libc_inc="@INCDIR@"
-+libc_lib="@LIBDIR@"
-+thisdir="`cd "$(dirname "$0")"; pwd`"
-+
-+# prevent clang from running the linker (and erroring) on no input.
-+sflags=
-+eflags=
-+for x ; do
-+ case "$x" in
-+ -l*) input=1 ;;
-+ *) input= ;;
-+ esac
-+ if test "$input" ; then
-+ sflags="-l-user-start"
-+ eflags="-l-user-end"
-+ break
-+ fi
-+done
-+
-+exec $cc \
-+ -B"$thisdir" \
-+ -fuse-ld=musl-clang \
-+ -static-libgcc \
-+ -nostdinc \
-+ --sysroot "$libc" \
-+ -isystem "$libc_inc" \
-+ -L-user-start \
-+ $sflags \
-+ "$@" \
-+ $eflags \
-+ -L"$libc_lib" \
-+ -L-user-end
projects / openwrt / openwrt.git / commitdiff