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Corinna Vinschen 264b5e137e Move definition of wsadata into wsock_init
The problem this patch fixes showed up after updating to gcc-5.3.0.  The
cuplrit is a change in gcc when emitting section attributes.  It only
shows up when building without optimization.  Effect in Cygwin: ws2_32
functions failed to load.

In the original code the definition of "NO_COPY wsadata" was preceeding
an __asm__ block (the definition of the _wsock_init wrapper), while the
definition of "NO_COPY here" immediately follows the same assembler
block.  When gcc-5.3.0 emits assembler code for the wsadata definition,
it emits the .data_cygwin_nocopy section attribute.

Next it emits the assembler output for the __asm_ block, entirely ignoring
its content.  The __asm__ block adds a .text section definition.

Eventually gcc emits assembler code for the here definition.  However,
apparently gcc still "knows" that it just emitted the .data_cygwin_nocopy
section attribute and so doesn't redefine it.  Remember the __asm__?  It
changed the section to .text.

So with gcc-4.9.3 we got:

    .section .data_cygwin_nocopy,"w"
  wsadata:

  __asm__ block:
    .text

    .section .data_cygwin_nocopy,"w"
  here:

With gcc 5.3.0 we now get:

    .section .data_cygwin_nocopy,"w"
  wsadata:

  __asm__ block:
    .text

  here:

So "here" is now in the .text segment which is read-only.  Hilarity ensues.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2016-03-09 22:55:28 +01:00
config 2014-05-14 Sandra Loosemore <sandra@codesourcery.com> 2014-05-14 23:24:37 +00:00
etc
include For the RX port, avoid using string instructions when __RX_DISALLOW_STRING_INSNS__ is defined. 2015-04-23 21:57:13 +02:00
libgloss Seperate MSP430 cio syscalls into individual function sections. 2016-02-09 13:44:05 +00:00
newlib Enable HW interrupt setup on x86/x86_64 systems by default 2016-02-26 18:52:46 +01:00
texinfo
winsup Move definition of wsadata into wsock_init 2016-03-09 22:55:28 +01:00
.gitattributes Add .gitattributes 2015-03-09 20:53:11 +01:00
.gitignore Add *.swp (Vim swap files) to .gitignore 2015-03-17 12:03:30 +01:00
COPYING
COPYING.LIB
COPYING.LIBGLOSS Add Synopsys license for newlib and libgloss 2015-11-12 14:16:32 +01:00
COPYING.NEWLIB Add Synopsys license for newlib and libgloss 2015-11-12 14:16:32 +01:00
COPYING3
COPYING3.LIB
ChangeLog Add Synopsys license for newlib and libgloss 2015-11-12 14:16:32 +01:00
MAINTAINERS
Makefile.def 2013-08-12 Jan-Benedict Glaw <jbglaw@lug-owl.de> 2013-08-12 11:36:35 +00:00
Makefile.in 2013-08-12 Jan-Benedict Glaw <jbglaw@lug-owl.de> 2013-08-12 11:36:35 +00:00
Makefile.tpl
README
README-maintainer-mode
compile
config-ml.in
config.guess config.{guess,sub}: sync with upstream 2015-09-22 09:25:18 -04:00
config.rpath
config.sub config.{guess,sub}: sync with upstream 2015-09-22 09:25:18 -04:00
configure Add support for ARC to libgloss 2015-11-12 14:11:47 +01:00
configure.ac Add support for ARC to libgloss 2015-11-12 14:11:47 +01:00
depcomp
djunpack.bat
install-sh
libtool.m4 * libtool.m4 (_LT_ENABLE_LOCK <ld -m flags>): Remove non-canonical 2013-09-20 09:51:24 +00:00
ltgcc.m4
ltmain.sh PR target/59788 2014-02-05 13:17:47 +00:00
ltoptions.m4
ltsugar.m4
ltversion.m4
lt~obsolete.m4
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change
setup.com
src-release * src-release (do-proto-toplevel): Support subdir-path-prefixed 2013-10-15 20:45:52 +00:00
symlink-tree
ylwrap

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