Commit Graph

19889 Commits

Author SHA1 Message Date
David Allsopp 51a297bcbf Ensure nanosleep(2) never returns negative rem
It appears to be the case that NtQueryTimer can return a negative time
remaining for an unsignalled timer. The value appears to be less than
the timer resolution.

Signed-off-by: David Allsopp <david.allsopp@metastack.com>
2021-07-22 09:57:40 +02:00
Alex White 44a3966577 libc/include/sys/config.h: Undef _REENT_SMALL for RTEMS on MicroBlaze
RTEMS does not expect _REENT_SMALL.
2021-07-22 09:35:17 +02:00
Corinna Vinschen bf8f2a95df Cygwin: profiler: Fix formatting warnings
DWORD has different types on 32 and 64 bit.  Use a common cast to
unsigned long to use %lu format for DWORD values throughout.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-07-21 10:07:22 +02:00
Kito Cheng ca7b4bd236 libm: Fixing overflow handling issue for scalbnf and scalbn
cc Aldy Hernandez <aldyh@redhat.com> and Andrew MacLeod <amacleod@redhat.com>,
they are author of new VRP analysis for GCC, just to make sure I didn't
mis-understanding or mis-interpreting anything on GCC site.

GCC 11 have better value range analysis, that give GCC more confidence
to perform more aggressive optimization, but it cause scalbn/scalbnf get
wrong result.

Using scalbn to demostrate what happened on GCC 11, see comments with VRP
prefix:

```c
double scalbn (double x, int n)
{
	/* VRP RESULT: n = [-INF, +INF] */
        __int32_t  k,hx,lx;
        ...
        k = (hx&0x7ff00000)>>20;
	/* VRP RESULT: k = [0, 2047] */
        if (k==0) {
	    /* VRP RESULT: k = 0 */
	    ...
	    k = ((hx&0x7ff00000)>>20) - 54;
            if (n< -50000) return tiny*x;       /*underflow*/
	    /* VRP RESULT: k = -54 */
	}
	/* VRP RESULT: k = [-54, 2047] */
        if (k==0x7ff) return x+x;               /* NaN or Inf */
	/* VRP RESULT: k = [-54, 2046] */
        k = k+n;
        if (k > 0x7fe) return huge*copysign(huge,x); /* overflow  */
	/* VRP RESULT: k = [-INF, 2046] */
	/* VRP RESULT: n = [-INF, 2100],
	   because k + n <= 0x7fe is false, so:
	   1. -INF < [-54, 2046] + n <= 0x7fe(2046) < INF
	   2. -INF < [-54, 2046] + n <= 2046 < INF
	   3. -INF < n <= 2046 - [-54, 2046] < INF
	   4. -INF < n <= [0, 2100] < INF
	   5. n = [-INF, 2100] */
        if (k > 0)                              /* normal result */
            {SET_HIGH_WORD(x,(hx&0x800fffff)|(k<<20)); return x;}
        if (k <= -54) {
	    /* VRP OPT: Evaluate n > 50000 as true...*/
            if (n > 50000)      /* in case integer overflow in n+k */
                return huge*copysign(huge,x);   /*overflow*/
            else return tiny*copysign(tiny,x);  /*underflow*/
	}
        k += 54;                                /* subnormal result */
        SET_HIGH_WORD(x,(hx&0x800fffff)|(k<<20));
        return x*twom54;
}
```

However give the input n = INT32_MAX, k = k+n will overflow, and then we
expect got `huge*copysign(huge,x)`, but new VRP optimization think
`n > 50000` is never be true, so optimize that into `tiny*copysign(tiny,x)`.

so the solution here is to moving the overflow handle logic before `k = k + n`.
2021-07-21 09:56:04 +02:00
Mark Geisert ff9c2b3ab9
Cygwin: updates to wire in profiler, gmondump
These are updates to wire into the build tree the new tools profiler and
gmondump, and to supply documentation for the tools.

The documentation for profiler and ssp now mention each other but do not
discuss their similarities or differences.  That will be handled in a
future update to the "Profiling Cygwin Programs" section of the Cygwin
User's Guide, to be supplied.
2021-07-19 13:29:34 +01:00
Mark Geisert 4ad5b0ca31
Cygwin: New tool: gmondump
This new tool was formerly part of 'profiler' but was spun out thanks to
Jon T's reasonable review comment.  Gmondump is more of a debugging tool
than something users might have need for.  Users would more likely use
gprof to make use of symbolic info like function names and source line
numbers.
2021-07-19 13:29:13 +01:00
Mark Geisert 9bd6c0b2b1
Cygwin: New tool: profiler
The new tool formerly known as cygmon is renamed to 'profiler'.  For the
name I considered 'ipsampler' and could not think of any others.  I'm open
to a different name if any is suggested.

I decided that a discussion of the pros and cons of this profiler vs the
existing ssp should probably be in the "Profiling Cygwin Programs" section
of the Cygwin User's Guide rather than in the help for either.  That
material will be supplied at some point.

CONTEXT buffers are made child-specific and thus thread-specific since
there is one profiler thread for each child program being profiled.

The SetThreadPriority() warning comment has been expanded.

chmod() works on Cygwin so the "//XXX ineffective" comment is gone.

I decided to make the "sample all executable sections" and "sample
dynamically generated code" suggestions simply expanded comments for now.

The profiler program is now a Cygwin exe rather than a native exe.
2021-07-19 13:28:37 +01:00
Ken Brown cee03513d8 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.

Addresses: https://cygwin.com/pipermail/cygwin/2021-July/248887.html
2021-07-12 16:26:13 -04:00
Kito Cheng 91f99d323b 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.

ISO/IEC TS 18661-3:
http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2405.pdf

V2 Changes:
- List Howland, Craig D as co-author since he provide the draft of comment
  in math.h.

Co-authored-by: "Howland, Craig D" <howland@LGSInnovations.com>
2021-07-12 21:07:43 +02:00
Jon Turney 9a231073a5
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).
2021-07-09 13:24:08 +01:00
Jon Turney e6b667f1a4
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'!
2021-07-09 13:21:18 +01:00
Jon Turney be4a8b91ff
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
2021-07-09 13:21:16 +01:00
Keith Packard fb01286fab 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.

Signed-off-by: Keith Packard <keithp@keithp.com>
2021-07-07 13:22:02 -04:00
Thomas Wolff 1290301b89 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
2021-07-07 13:38:30 +02:00
Jeremy Drake 4fca7b0da6 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.
2021-07-07 10:46:06 +02:00
Jeremy Drake d0e42141b8 Revert "Cygwin: Handle virtual drives as non-symlinks"
This reverts commit c8949d0400.
2021-07-06 16:57:02 +02:00
Jeff Law c01f603df9 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.

    * libgloss/visium/configure.in (target_makefile_frag): Define.
    * libgloss/visium/configure: Regenerated.
    * libgloss/iq2000/configure.in (target_makefile_frag): Define.
    * libgloss/iq2000/configure: Regenerated.
2021-07-06 10:46:09 -04:00
Brian Inglis 7323efd73c format_proc_cpuinfo: add Linux 5.13 AMD/Hygon rapl
Linux 5.13 Opossums on Parade added features and changes:
add AMD 0x80000007 EDX:14 rapl runtime average power limit
2021-07-06 16:06:29 +02:00
Takashi Yano 98e3aeb1f5 Cygwin: console: Fix garbled input for non-ASCII chars.
- After the commit ff4440fc, non-ASCII input may sometimes be garbled.
  This patch fixes the issue.

  Addresses: https://cygwin.com/pipermail/cygwin/2021-June/248775.html
2021-07-06 16:04:44 +02:00
Corinna Vinschen bc184284cb Revert "Cygwin: console: Fix garbled input for non-ASCII chars."
This reverts commit 1b242c12aa.
2021-07-06 16:04:22 +02:00
Takashi Yano 1b242c12aa Cygwin: console: Fix garbled input for non-ASCII chars.
- After the commit ff4440fc, non-ASCII input may sometimes be garbled.
  This patch fixes the issue.

  Addresses: https://cygwin.com/pipermail/cygwin/2021-June/248775.html
2021-07-06 16:00:20 +02:00
Thomas Wolff 204ee3cf6a fix and amend scripts and makefile rules to generate Unicode data 2021-07-06 15:35:37 +02:00
Thomas Wolff 11fdae24b7 update to Unicode 13.0 2021-07-06 15:35:37 +02:00
Stafford Horne 43999b660f libgloss/or1k: Correct the IMMU SXE and UXE flags
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.

Signed-off-by: Stafford Horne <shorne@gmail.com>
2021-07-05 18:00:40 -04:00
Mark Geisert 5c9c31c52b
Cygwin: Zero out gmon header before use
Tools that process gmon.out files can be confused by gmon header fields
with garbage in them due to lack of initialization.  Repair that.
2021-06-26 15:24:27 +01:00
Jonathan Wakely a39ae40b86 inttypes.h: Use reserved names for function parameters 2021-06-25 16:48:31 -04:00
Keith Packard 92068f4cc5 stdio: Parse 0x0p+00 correctly in scanf
The scanf code was skipping the '0' after the 'x' causing the
resulting buffer to contain an invalid number when passed to strtod.

Signed-off-by: Keith Packard <keithp@keithp.com>
2021-06-18 17:15:37 -04:00
Joel Sherrill 90a72f27d5 newlib/doc/makedoc.c: if realloc() fails, exit with an error message. 2021-06-17 16:48:47 -05:00
Joel Sherrill 609f5a51c6 newlib/doc/makedoc.c: Fix memory leak identified by Coverity. 2021-06-17 16:27:49 -05:00
Joel Sherrill 59584ff16b libc/sys/rtems/crt0.c: Fix two warnings.
__assert_func() is marked as noreturn and stub should not.
	__tls_get_addr() needed to return a value..
2021-06-17 12:58:36 -05:00
Mark Geisert ee0986cfe1
Cygwin: Fix a stray tab in strace documentation 2021-06-13 15:51:11 +01:00
Dimitar Dimitrov df0ad84e91 libgloss: pru: Remove sim ld script
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.

Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
2021-06-09 14:15:56 -04:00
Dimitar Dimitrov 464c3f5d22 libgloss: pru: Place sim syscalls into their own sections
This should help reduce final ELF size if using --gc-sections linker
option.

Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
2021-06-09 14:12:30 -04:00
Dimitar Dimitrov b585151016 pru: Enable -ffunction-sections and -fdata-sections
Recent binutils support --gc-sections for pru, so let's make use of
them.

Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
2021-06-09 14:07:14 -04:00
Jeff Johnston a9165ea07c 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
2021-06-04 14:42:58 -04:00
Ken Brown dfe5988f96 Cygwin: fhandler_mqueue::mq_open: fix typo 2021-05-26 12:48:58 -04:00
Richard Earnshaw 2a3a03972b 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.
2021-05-26 15:17:11 +01:00
Corinna Vinschen fd84f6cf51 Cygwin: utils: enable -idirafter to fetch Cygwin headers from mingw sources
Get rid of the last dreaded relative paths pointing to the cygwin dir.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-05-26 11:01:32 +02:00
Corinna Vinschen 48a76190e8 Cygwin: utils: set _WIN32_WINNT and NTDDI_VERSION via Makefile
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-05-26 11:01:32 +02:00
Corinna Vinschen 88a2f9875a Cygwin: set NTDDI_VERSION to enable more recent windows definitions
Set to WDK_NTDDI_VERSION since that enables all the latest.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-05-26 11:01:32 +02:00
Corinna Vinschen 1adb3f11b7 Cygwin: fhandler_mqueue: add missing __reg2 for 32 bit build
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-05-26 11:01:32 +02:00
Corinna Vinschen 59ba43dd9e Cygwin: fhandler_mqueue: disable more methods, add fcntl
Unsupported functionality returns EPERM, fcntl supports
only F_GETFD and F_GETFL.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-05-25 23:00:32 +02:00
Corinna Vinschen 2b4c7f90d4 Cygwin: fhandler_mqueue::mq_open: set all required fhandler flags
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-05-25 22:43:41 +02:00
Corinna Vinschen fd3fb7a147 Cygwin: disable creating directories below /dev/mqueue
...as on Linux.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-05-25 22:05:13 +02:00
Corinna Vinschen 90e5dbfc24 Cygwin: fhandler_mqueue: fix method declarations
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-05-25 22:04:43 +02:00
Corinna Vinschen 782b338530 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.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-05-25 22:03:36 +02:00
Corinna Vinschen 4c09dc4f9c 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.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-05-25 21:46:13 +02:00
Corinna Vinschen efef4b8bf1 Cygwin: POSIX msg queues: implement read(2)/lseek(2)
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.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-05-25 20:19:19 +02:00
Corinna Vinschen 517c7e79da Cygwin: POSIX msg queues: implement ioctl(2)
Call into fhandler_base::ioctl immediately, thus only allowing
FIONBIO to manipulate blocking behaviour.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-05-25 20:17:07 +02:00
Corinna Vinschen 46f3b0ce85 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.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-05-25 20:15:16 +02:00