On s390x syscalls are triggered by svc instruction. One can
pass the syscall number encoded in the instruction "svc 123"
or by storing it in r1:
lghi r1,123
svc 0
If the syscall number is encoded in the instruction, this can
cause broken syscall restarts. Therefore this patch is now just
passing the syscall number in r1.
See also kernel-commit:
"s390/signal: switch to using vdso for sigreturn and syscall restart"
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/arch/s390/[%e2%80%a6]call.c?h=v6.0-rc1&id=df29a7440c4b5c65765c8f60396b3b13063e24e9
As information, the "svc 0" feature was introduced in kernel 2.5.62:
commit b5aad611393ef2e132e3648fa4c6e56a9cfa8708
I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.
I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah. I don't
know why I run into these diagnostics whereas others evidently do not.
remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
We stopped adding "Contributed by" or similar lines in sources in 2012
in favour of git logs and keeping the Contributors section of the
glibc manual up to date. Removing these lines makes the license
header a bit more consistent across files and also removes the
possibility of error in attribution when license blocks or files are
copied across since the contributed-by lines don't actually reflect
reality in those cases.
Move all "Contributed by" and similar lines (Written by, Test by,
etc.) into a new file CONTRIBUTED-BY to retain record of these
contributions. These contributors are also mentioned in
manual/contrib.texi, so we just maintain this additional record as a
courtesy to the earlier developers.
The following scripts were used to filter a list of files to edit in
place and to clean up the CONTRIBUTED-BY file respectively. These
were not added to the glibc sources because they're not expected to be
of any use in future given that this is a one time task:
https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dchttps://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
2001-08-14 Tom Rix <trix@redhat.com>
* iconv/gconv_cache.c (find_module): Add #ifndef STATIC_GCONV.
* iconv/Makefile: Fix gconv_cache.c CFLAGS.
2001-08-13 Tom Rix <trix@redhat.com>
* sysdeps/unix/sysv/aix/Makefile: Add rule to import kernel symbols.
* sysdeps/unix/sysv/aix/bits/types.h: Fix type of __id_t, __useconds_t
and __intptr_t.
2001-08-15 Martin Schwidefsky <schwidefsky@de.ibm.com>
* sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S (__getcontext):
Store the access registers to the ucontext structure.
* sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S (__getcontext):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S (__setcontext):
Load the access registers from the ucontext structure.
* sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S (__setcontext):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/ucontext_i.h: Adjust the SC_xxx
offsets to the new ucontext layout.
* sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.h: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/sys/ucontext.h: Fix the layout
of the ucontext structure.
* sysdeps/unix/sysv/linux/s390/s390-64/sys/ucontext.h: Likewise.
2001-07-06 Paul Eggert <eggert@twinsun.com>
* manual/argp.texi: Remove ignored LGPL copyright notice; it's
not appropriate for documentation anyway.
* manual/libc-texinfo.sh: "Library General Public License" ->
"Lesser General Public License".
2001-07-06 Andreas Jaeger <aj@suse.de>
* All files under GPL/LGPL version 2: Place under LGPL version
2.1.
2001-04-10 Martin Schwidefsky <schwidefsky@de.ibm.com>
* sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S: Fix return
value of getcontext.
* sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S: Fix return
value of setcontext.
* sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S: Likewise.
* sysdeps/unix/sysv/linux/s390/swapcontext.c: Skip setcontext
call by changing the saved context.
