Ken Brown [Sun, 11 Jul 2021 11:04:58 +0000 (07:04 -0400)]
Cygwin: cfsetspeed: allow speed to be a numerical baud rate
The Linux man page for cfsetspeed(3) specifies that the speed argument
must be one of the constants Bnnn (e.g., B9600) defined in termios.h.
But Linux in fact allows the speed to be the numerical baud rate
(e.g., 9600). For consistency with Linux, we now do the same.
Kito Cheng [Mon, 12 Jul 2021 09:17:21 +0000 (17:17 +0800)]
Minimal support for ISO/IEC TS 18661-3.
- GCC will set __FLT_EVAL_METHOD__ to 16 if __fp16 supported, e.g.
cortex-a55/aarch64.
- $ aarch64-unknown-elf-gcc -v 2>&1 |grep version
gcc version 9.2.0 (GCC)
- $ aarch64-unknown-elf-gcc -E -dM -mcpu=cortex-a55 - < /dev/null |grep FLT_EVAL_METHOD
#define __FLT_EVAL_METHOD__ 16
#define __FLT_EVAL_METHOD_TS_18661_3__ 16
#define __FLT_EVAL_METHOD_C99__ 16
- The behavior of __FLT_EVAL_METHOD__ == 16 is same as
__FLT_EVAL_METHOD__ == 0 except for float16_t, but newlib didn't
support float16_t.
Jon Turney [Thu, 20 May 2021 17:28:01 +0000 (18:28 +0100)]
Cygwin: Define PSAPI_VERSION as 1 before including psapi.h
The default PSAPI_VERSION is controlled by WIN32_WINNT, which we set to
0x0a00 when building utils since 48a76190 (and is the default in w32api
>= 9.0.0)
In order for the built executables to run on Windows Vista, we must also
define PSAPI_VERSION as 1 (otherwise '#define GetModuleFileNameExA
K32GetModuleFileNameExA' causes a 'The procedure entry point
K32GetModuleFilenameExA could not be located in the dynamic link library
kernel32.dll' error at run time).
Also drop uneeded psapi.h from dlfcn.cc (31ddf45d), resource.cc
(34a6eeab) and ps.cc (1def2148).
Jon Turney [Mon, 14 Jun 2021 12:51:41 +0000 (13:51 +0100)]
Cygwin: Use cmdsynopsis element in utils documentation
Use <cmdsynopsis> element markup in utils docbook documentation, rather
than some preformatted text inside <screen>.
(This didn't happen as part of 646745cb, when we first started using
refentry elements to make it possible to generate manpages)
This helps produce better looking manpages:
* uses bold (for command names) and italic (for replaceable items)
* different output formats inconsistently treat tabs inside <screen>
(so we have to be careful to not use them in that preformatted text)
Also clean up various issues:
* Replace '[OPTIONS]' with a real synopsis of the options
* Consistently use 'ITEM...' rather than 'ITEM1 [ITEM2...]' for an item
which should appear 1 or more times (cygcheck -f, getfacl, kill)
* Consistently document the '-h | -V' invocation form
* Since replaceable items are now marked up so they have some formatting
indicating they are replaceable, we can drop wrapping them in angle
brackets, as is done in some places
* Add missing '-W' and '-p PID' options to ps synopsis
* Adjust cygpath synopsis to show that only one 'System information'
option is allowed, possibly modified by -A
Future work:
* Sync up the actual help emitted by the util, where it's been improved
* Also don't use <screen> for formatting 'OPTIONS' section of manpage
* pldd inconsistently uses '-?' rather than '-h'!
Jon Turney [Mon, 14 Jun 2021 20:18:49 +0000 (21:18 +0100)]
Cygwin: Various minor fixes to utils documentation
* Drop duplicate 'Options:' headers (mkgroup, mkpassword)
* Add missing indication that MACHINE is optional with -L (mkgroup, mkpassword)
* Tweak some <refpurpose> which try to be a synopsis, rather than a decription (passwd, ssp)
* Drop some stray '\n' in setfacl options
* Move 'Original Author' note in ssp to an AUTHORS section
* Use <para> to improve formatting of tzset manpage
Keith Packard [Tue, 22 Jun 2021 17:26:26 +0000 (10:26 -0700)]
stdlib: Make strtod/strtof set ERANGE consistently for underflow.
The C standard says that errno may acquire the value ERANGE if the
result from strtod underflows. According to IEEE 754, underflow occurs
whenever the value cannot be represented in normalized form.
Newlib is inconsistent in this, setting errno to ERANGE only if the
value underflows to zero, but not for denorm values, and never for hex
format floats.
This patch attempts to consistently set errno to ERANGE for all
'underflow' conditions, which is to say all values which are not
exactly zero and which cannot be represented in normalized form.
This matches glibc behavior, as well as the Linux, Mac OS X, OpenBSD,
FreeBSD and SunOS strtod man pages.
Thomas Wolff [Fri, 2 Jul 2021 22:00:00 +0000 (00:00 +0200)]
tty/pty: support TIOCSWINSZ pixel-size-only change notification
xterm 368 and mintty 3.5.1 implement a new feature to support
notification of terminal scaling via font zooming also if the terminal
text dimensions (rows/columns) stay unchanged, using
ioctl(TIOCSWINSZ), raising SIGWINCH;
this patches cygwin to support that scenario
Jeremy Drake [Sat, 29 May 2021 18:48:11 +0000 (11:48 -0700)]
Cygwin: respect PC_SYM_FOLLOW and PC_SYM_NOFOLLOW_REP with inner links.
The new GetFinalPathNameW handling for native symlinks in inner path
components is disabled if caller doesn't want to follow symlinks, or
doesn't want to follow reparse points.
Jeff Law [Tue, 6 Jul 2021 14:46:09 +0000 (10:46 -0400)]
Fix builds on iq2000 and visium
visium and iq2000 have libgloss configure bits that reference
target_makefile_frag, but it's never set. This leads to failures during the
configure process and an empty libgloss/<target>/Makefile. Naturally bad
things happen with an empty Makefile.
This patch initializes target_makefile_frag for both targets in their
configure.in files and updates the generated configure files. This fixes the
build failures. I've been using it in my tester for about a week and both
targets have flipped from consistently failing to consistently passing.
These have been defined incorrectly, as per specification and CPU
implementations SXE is bit 6 and UXE is bit 7. This was noticed when
tracking down our test suite mmu test failures.
Test Suite: https://github.com/openrisc/or1k-tests/blob/master/native/or1k/or1k-mmu.c#L68-L72
Spec: https://raw.githubusercontent.com/openrisc/doc/master/openrisc-arch-1.3-rev1.pdf
See section 8.4.8 Instruction Translation Lookaside Buffer Way y Translate
Registers where these are defined.
Binutils LD default linker script was recently fixed to allow memory
sizes to be set via command line. Use this feature to remove the special
sim linker script in libgloss.
It is acceptable to require newer Binutils version here because simulator
target is only used for regression testing the toolchain. Real HW
targets are not affected.
Jeff Johnston [Fri, 4 Jun 2021 18:36:38 +0000 (14:36 -0400)]
Fix rounding issues with sqrt/sqrtf
- compiler is sometimes optimizing out the rounding check in
e_sqrt.c and ef_sqrt.c which uses two constants to create
an inexact operation
- there is a similar constant operation in s_tanh.c/sf_tanh.c
- make the one and tiny constants volatile to stop this
Richard Earnshaw [Wed, 26 May 2021 14:17:11 +0000 (15:17 +0100)]
aarch64: support binary mode for opening files
Newlib for aarch64 uses libgloss for the backend. One common libgloss
implementation is the 'rdimon' implementation, which uses the Arm
Semihosting protocol. In order to support a remote host that runs on
Windows we need to know whether a file is to be opened in binary or
text mode. That means that we need to preserve this information via
O_BINARY until we know what the libgloss binding will be.
This patch simply copies the arm implementation from sys/arm/sys and
puts it in machine/aarch64/sys, because we don't have a 'sys' subtree
on aarch64.
Corinna Vinschen [Tue, 25 May 2021 20:03:36 +0000 (22:03 +0200)]
Cygwin: path_conv: fix mqueue path check
The check for a file or dir within /dev/mqueue is accidentally using
the incoming path, which could be a relative path. Make sure to
restore the absolute POSIX path in path_copy and only then test the
path.
Also, move the actual check for a valid path below /dev/mqueue into
the fhandler_mqueue class.
Corinna Vinschen [Tue, 25 May 2021 19:46:13 +0000 (21:46 +0200)]
Cygwin: cwdstuff: check if /dev exists
/dev has been handled as virtual dir in cwdstuff, thus not allowing
to start native apps from /dev as CWD, even if /dev actually exists
on disk. Unfortunately this also affects Cygwin executables started
from a debugger.
When chdir'ing to /dev, check if /dev exists on disk. If so, treat
it as any other existing path.
reuse fhandler_virtual implementation to implement read and lseek.
The output from read(2) is modelled after the output when reading
from an mq file on Linux.
Corinna Vinschen [Tue, 25 May 2021 18:15:16 +0000 (20:15 +0200)]
Cygwin: POSIX msg queues: move all mq_* functionality into fhandler_mqueue
The POSIX entry points are just wrappers now, calling into
fhandler_mqueue. While at it, eliminate mqi_flags, replace with
standard fhandler nonblocking flag.
Corinna Vinschen [Tue, 25 May 2021 14:49:04 +0000 (16:49 +0200)]
Cygwin: POSIX msg queues: implement open/mq_open entirely in fhandler
The mq_open call is just a framework now. This patch moves the
entire functionality into fhandler_mqueue. To support standard
OS calls (as on Linux), make fhandler_mqueue a derived class from
fhandler_disk_file and keep the base handle the handle to the
default stream, to allow implementing O_PATH functionlaity as well
as reading from the file and NOT reading binary message queue data.
Implement a standard fhandler_mqueue::open method, allowing, for
instance, to touch a file under /dev/mqueue and if it doesn't exist,
to create a message queue file.
FIXME: This introduces a BAD HACK into path_conv::check, which needs
reviewing.
Keep the posix path intact in the fhandler, and change get_proc_fd_name
accordingly to return only the basename plus leading slash for
/proc/<PID>/fd.
Corinna Vinschen [Tue, 25 May 2021 14:24:58 +0000 (16:24 +0200)]
Cygwin: get_nt_native_path: allow to append suffix
POSIX message queues will be moved into NTFS streams.
Extend get_nt_native_path to provide a filename suffix which is not
subject to special character transposition, to allow specifying
a colon.
Corinna Vinschen [Fri, 21 May 2021 13:21:29 +0000 (15:21 +0200)]
Cygwin: POSIX ipc: fix evaluation of naming rules
The function evaluating correctness of ipc object names was a
bit half-hearted. Fix the tests to follow more closely the
desriptions in the Linux man pages.
Corinna Vinschen [Fri, 21 May 2021 10:01:56 +0000 (12:01 +0200)]
Cygwin: POSIX msg queues: Convert mqd_t to a descriptor
So far, the mqd_t type returned a pointer to an allocated
area under the hood. The mutex and event objects attached
to the message queue were implemented as inheritable types.
As unfortunate side effect the HANDLEs to these objects
were inherited by exec'd child processes, even though all
other message queue properties are not inherted, per POSIX.
Fix this by converting an mqd_t to a descriptor, and create a
matching fhandler_mqueue object to handle various aspects of
the message queues inside the fhandler. Especially, create the
IPC objects as non-inheritable and duplicate the HANDLEs as
part of the fixup_after_fork mechanism.
Drop using mmap and create the memory map with NT functions.
This allows to control duplication of handle and mapping in the
forked child process, without the requirement to regenerate the
map in the same spot. It also allows to dup() the descriptor,
as on Linux, albeit this isn't implemented yet.
This patch is the first cut. There's a bit more to do, like
moving more functionality from the POSIX functions into the
fhandler and making sure the mqd_t type can't be used in other
descriptor-related functions willy-nilly.
Christian Franke [Thu, 20 May 2021 09:05:29 +0000 (11:05 +0200)]
Cygwin: utils: chattr: Improve option parsing, fix some messages.
Allow multiple characters also in first '-mode' argument.
Use '-H' instead of '-h' for '--help' to fix ambiguity with
hidden attribute. Fix help and usage texts and documentation.
Signed-off-by: Christian Franke <christian.franke@t-online.de>
Jeremy Drake [Wed, 19 May 2021 09:43:48 +0000 (11:43 +0200)]
Cygwin: suppress FAST_CWD warnings on ARM64
The old check was insufficient: new insider preview builds of Windows
allow running x86_64 process on ARM64. The IsWow64Process2 function
seems to be the intended way to figure this situation out.
Jon Turney [Tue, 27 Apr 2021 22:41:07 +0000 (23:41 +0100)]
Move source files used in utils/mingw/ into that subdirectory
Move all the source files used in utils/mingw/ into that subdirectory,
so the built objects are in the expected place.
(path.cc requires some more unpicking, and even then there is genuinely
some shared code, so use a trivial file which includes the real path.cc
so the object file is generated where expected)
Jon Turney [Wed, 28 Apr 2021 13:54:47 +0000 (14:54 +0100)]
Unpick cygpath TESTSUITE
Rather than having testsuite.h do various things, depending on defines,
just have it do one thing, and then explicitly redirect to test stubs in
path.cc when building test.
Cygwin: fetch Windows directory on all platforms and use throughout
Rather than fetching the system Windows directory at dll init time
only on 32 bit, fetch it on all platforms. Store as WCHAR and
UNICODE_STRING. Use where appropriate to simplify code.
Cygwin: path_conv: Rework handling native symlinks as inner path components
commit 456c3a46386f was only going half-way. It handled symlinks and
junction points as inner path components and made realpath return the
correct path, but it ignored drive letter substitution, i. e., virtual
drives created with, e. g.
subst X: C:\foo\bar
It was also too simple. Just returning an error code from
symlink_info::check puts an unnecessary onus on the symlink evaluation
loop in path_conv::check.
Rework the code to use GetFinalPathNameByHandle, and only do this after
checking the current file for being a symlink failed.
If the final path returned by GetFinalPathNameByHandle is not the same
as the incoming path, replace the incoming path with the POSIXified
final path. This also short-circuits path evaluation, because
path_conv::check doesn't have to recurse over the inner path components
multiple times if all symlinks are of a native type, while still getting
the final path as end result.
Virtual drives are now handled like symlinks. This is a necessary change
from before to make sure virtual drives are handled identically across
different access methods. An example is realpath(1) from coreutils. It
doesn't call readlink(2), but iterates over all path components using
lstat/readlink calls. Both methods should result in the same real path.
Fixes: 456c3a46386f ("path_conv: Try to handle native symlinks more sanely") Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Ola Olsson [Mon, 26 Apr 2021 08:57:02 +0000 (10:57 +0200)]
Nano-malloc: Fix for unwanted external heap fragmentation
The only reason why it is tough for us to use nano malloc
is because of the small shortcoming where nano_malloc()
splits a bigger chunk from the free list into two pieces
while handing back the second one (the tail) to the user.
This is error prone and especially bad for smaller heaps,
where nano malloc is supposed to be superior. The normal
malloc doesn't have this issue and we need to use it even
though it costs us ~2k bytes compared to nano-malloc.
The problem arise especially after giving back _every_
malloced memory to the heap and then starting to exercise
the heap again by allocating something small. This small
item might split the whole heap in two equally big parts
depending on how the heap has been exercised before.
I have uploaded the smallest possible application
(only tested on ST and Nordic devices) to show the issue
while the real customer applications are far more complicated:
https://drive.google.com/file/d/1kfSC2KOm3Os3mI7EBd-U0j63qVs8xMbt/view?usp=sharing
The application works like the following pseudo code,
where we assume a heap of 100 bytes
(I haven't taken padding and other nitty and gritty
details into account. Everything to simplify understanding):
void *ptr = malloc(52); // We get 52 bytes and we have
// 48 bytes to use.
free(ptr); // Hand back the 52 bytes to nano_malloc
// This is the magic line that shows the issue of
// nano_malloc
ptr = malloc(1); // Nano malloc will split the 52 bytes
// in the free list and hand you a pointer
// somewhere in the
// middle of the heap.
ptr2 = malloc(52); // Out of memory...
I have done a fix which hands back the first part of the
splitted chunk. Once this is fixed we obviously
have the 1 byte placed in position 0 of the heap instead
of somewhere in the middle.
However, this won't let us malloc 52 new bytes even though
we potentially have 99 bytes left to use in the heap. The
reason is that when we try to do the allocation,
nano-malloc looks into the free list and sees a 51 byte
chunk to be used.
This is not big enough so nano-malloc decides to call
sbrk for _another_ 52 bytes which is not possible since
there is only 48 bytes left to ask for.
The solution for this problem is to check if the last
item in the free list is adjacent to sbrk(0). If it is,
as it is in this case, we can just ask sbrk for the
remainder of what is needed. In this case 1 byte.
NB! I have only tested the solution on our ST device.
Brian Inglis [Fri, 30 Apr 2021 13:19:20 +0000 (07:19 -0600)]
format_proc_swaps: ensure space between fields for clarity
page/swap space name >= 40 or size/used >= 8 leaves no space between fields;
ensure a space after name and add extra tabs after size and used fields;
output appears like Linux 5.8 after changes to mm/swapfile(swap_show);
proc-swaps-space-before.log:
==> /proc/swaps <==
Filename Type Size Used Priority
/mnt/c/pagefile.sys file 11567748292920 0
/mnt/d/pagefile.sys file 12582912205960 0
proc-swaps-space-after.log:
==> /proc/swaps <==
Filename Type Size Used Priority
/mnt/c/pagefile.sys file 11567748 241024 0
/mnt/d/pagefile.sys file 12582912 182928 0
Jon Turney [Tue, 27 Oct 2020 16:29:45 +0000 (16:29 +0000)]
Cygwin: CI configuration update
Install autoconf and automake, and run winsup/autogen.sh, and don't have
it silently ignore failures.
On AppVeyor:
- use latest VM image, to reduce time spent installing updates.
- run the testsuite, but ignore the result, as some tests don't work
correctly.
- hardcode the python-lxml and python-ply packages to install, so we get
ones for the right python.
- install texlive collections now needed to build documentation.
On github:
- Use a copr for cocom, since RPMSphere's package updates don't track
fedora:latest very efficently.
Cygwin: POSIX mq: avoid double calls to ipc_mutex_unlock
_mq_send as well as _mq_receive call ipc_mutex_unlock twice in case
of success, after having introduced __try/__except blocks.
Fixes: 3f3bd10104550 ("* Throughout, use __try/__except/__endtry blocks, rather than myfault handler.") Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Cygwin: POSIX mq: only allo priority up to MQ_PRIO_MAX - 1
POSIX requires that message priorities range from 0 (low) to
sysconf(_SC_MQ_PRIO_MAX) - 1 (high). Cygwin's mq_send erroneously
allowed a message priority of sysconf(_SC_MQ_PRIO_MAX). Fix it.
Jon Turney [Wed, 28 Apr 2021 09:46:02 +0000 (11:46 +0200)]
Cygwin: specify toollibdir toolincludedir in terms of tooldir
Specify toollibdir and toolincludedir in terms of tooldir, so the
install location is correct if tooldir is the default
($(exec_prefix)/$(target_alias)), or explicitly specified on the 'make'
command line.
Linux 5.12 Frozen Wasteland added features and changes:
add AMD 0x8000000a EDX:20 v_spec_ctrl virtual speculation control support
add Intel 0x00000007 ECX:24 bus_lock_detect bus lock detect debug exception
Jon Turney [Tue, 6 Oct 2020 15:11:54 +0000 (16:11 +0100)]
Cygwin: Use automake (v5)
v2:
* Include tzmap.h in BUILT_SOURCES
* Make per-file flags appear after user-supplied CXXFLAGS, so they can
override optimization level.
* Correct .o files used to define symbols exported by libm.a
* Drop gcrt0.o mistakenly included in libgmon.a
* Add missing line continuations in GMON_FILES value
v3:
* use per-file flags for .c compilation
* override C{XX,}FLAGS, as they are set on the command line by top-level make
v4:
* Drop -Wno-error=write-strings from path_testsuite CXXFLAGS
v5:
* Update for changes in master
- Add -fno-threadsafe-statics to CXX flags
- Add hypotl.cc
- Remove fenv.cc (in favour of newlib), add fenv.c stub
- Add proc.5 manpage rules
Ken Brown [Fri, 23 Apr 2021 22:17:57 +0000 (18:17 -0400)]
Cygwin: connect: implement resetting a connected DGRAM socket
Following POSIX and Linux, allow a connected DGRAM socket's connection
to be reset (so that the socket becomes unconnected). This is done by
calling connect and specifing an address whose family is AF_UNSPEC.
Ken Brown [Fri, 23 Apr 2021 18:40:07 +0000 (14:40 -0400)]
Cygwin: connect: set connect state for DGRAM sockets
When connect is called on a DGRAM socket, the call to Winsock's
connect can immediately return successfully rather than failing with
WSAEWOULDBLOCK. Set the connect state to "connected" in this case.
Previously the connect state remained "connect_pending" after the
successful connection.
git://sourceware.org / newlib-cygwin.git / log