Commit Graph

6 Commits

Author SHA1 Message Date
Tom Hughes
c5a1912be8 Use sigjmp_buf
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15588
2015-08-24 19:26:56 +00:00
Tom Hughes
781dec8f80 Restore signal masks when recovering from xend related signals
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15587
2015-08-24 19:10:06 +00:00
Mark Wielaard
9b322bb026 Also install sigsegv handler in safe-pthread tests wrapper.
In case we do recognize the xend, but detect it is invalid
(used outside a transaction) we generate a segsegv instead
of a sigill. Handle that in the same way in the test case.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15570
2015-08-19 13:26:28 +00:00
Rhys Kidd
b9389efb87 Follow-up fix for r15565: sa_restorer should not be used. n-i-bz.
It is obsolete and not specified by POSIX. See man sigaction on Linux.
No regressions reported.

The following error may be seen on platforms that don't implement this extension:

depbase=`echo tc12_rwl_trivial.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\
    gcc -DHAVE_CONFIG_H -I. -I../..  -I../.. -I../../include -I../../coregrind -I../../include -I../../VEX/pub -I../../VEX/pub -DVGA_amd64=1 -DVGO_darwin=1 -DVGP_amd64_darwin=1 -DVGPV_amd64_darwin_vanilla=1 -DVGA_SEC_x86=1 -DVGP_SEC_amd64_darwin=1  -Winline -Wall -Wshadow -Wno-long-long -g -fno-stack-protector  -Wno-format-extra-args -Wno-literal-range -Wno-tautological-constant-out-of-range-compare -Wno-self-assign -Wno-string-plus-int -Wno-uninitialized -Wno-unused-value  -arch x86_64  -MT tc12_rwl_trivial.o -MD -MP -MF $depbase.Tpo -c -o tc12_rwl_trivial.o tc12_rwl_trivial.c &&\
    mv -f $depbase.Tpo $depbase.Po
In file included from tc12_rwl_trivial.c:8:
./safe-pthread.h:37:7: error: no member named 'sa_restorer' in 'struct sigaction'
   sa.sa_restorer = NULL;
   ~~ ^
1 error generated.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15569
2015-08-19 12:18:31 +00:00
Tom Hughes
7678f91cd1 Install the SIGILL handler everywhere so we get consistent
stacks and don't have to worry about __GLIBC_PREREQ not being
defined on all platforms.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15567
2015-08-19 08:27:06 +00:00
Tom Hughes
b22d60778f Attempt to work around issues with xend being executed unconditionally
when a pthread_rwlock is used in an invalid way.

Recent glibcs use transactional memory instructions to do lock ellision
but will sometimes, when locks are used in an invalid way, may calls to
xend on systems which don't support it, on the grounds that the program
is invalid anyway.

So we try and catch and ignore the resulting SIGILL in our tests that
deliberately work with invalid locks.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15565
2015-08-18 10:29:20 +00:00