Add support to properly handle TEQ, ADD and SUB instructions that generate
exceptions on MIPS platforms. A SignalException test for MIPS32 has also been
added, so we can cover more cases.
This resolves:
none/tests/faultstatus
gdbserver_tests/mcsignopass
gdbserver_tests/mcsigpass
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13059
The tester is located in memcheck/tests/vbit-test.
It needs the following support on the valgrind / VEX side:
(1) a new client request VG_USERREQ__VEX_INIT_FOR_IRI
(2) a new "special instruction" on all architectures inserted via
VALGRIND_VEX_INJECT_IR
(3) VEX changes to detect the special insn and insert IR (ir_inject.c)
The README file in vbit-test has some more information.
See also VEX r2490. Fixes bugzilla #300102.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12906
actually need it, and gcc on MacOS simply fails (for whatever reason)
to actually honour requests for 32 alignment, and fall back to the
previous setting (16 alignment).
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12817
- advance the guest_IA to the next insn after raising the signal
- adjusting the address in a complaint to point to the failing insn
(after guest_IA has been advanced)
Update testcases .exp files.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12787
* re-ordered the values to match the declaration order in
libvex_trc_values.h and pub_core_dispatch_asm.h
* added missing values
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12566
way that the fast-path through VG_(disp_cp_xindir) only has to
increment a 32 bit counter, saving memory bandwidth on 32 bit
platforms compared to a 64-bit inc. The overall numbers of XIndirs
can still be 64 bit though.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12527
This slightly improves some perf tests (e.g. heap).
Some not explained "real time" slow down of bz2 between trunk/svn tchain
and this patch analyzed with callgrind/cachegrind.
realtime slowdown attributed to Pentium 4 self modifying code unfriendly cache.
(callgrind/cachegrind cache simulation do not understand self modifying
code).
git-svn-id: svn://svn.valgrind.org/valgrind/branches/TCHAIN@12499
This is the followup to rev 12488.
With this revision, translation chaining is not done
if the translation with 'from address' is not existing
anymore (discarded or erased).
The assumption documented in 12488 comment has been checked by:
* first reproduce a crash in Firefox when always setting
caused discard to False
* then upgrade to rev 12488
* with this upgrade, no crash anymore.
=> this verifies that the caused discard logic is properly
replaced by revision 12488.
So, the caused discard logic can be removed.
git-svn-id: svn://svn.valgrind.org/valgrind/branches/TCHAIN@12492
If the pre_thread_ll_create tracking function would be invoked without the
big lock being held, that would trigger a race condition in the tools that
implement this tracking function.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12458
* manual-core.xml : fix a typo
* include/pub_tool_inner.h : new file, defining macros for inner annotation
include/Makefile.am : reference this new file.
* syswrap-linux.c : when ENABLE_INNER, register the stacks for the outer.
(otherwise, nothing works properly).
* m_redir.c : avoid inner interpreting the outer vgpreload instructions.
* sema.c : annotate the semaphore with RWLOCK annotations for helgrind
* ticket-lock-linux.c : similar.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12414
VALGRIND_{DISABLE,ENABLE}_ERROR_REPORTING, which allow a thread to
temporarily disable reporting of errors it makes. This is useful for
making Memcheck behave sanely in the presence of some MPI
implementations. Also mark up libmpiwrap.c accordingly.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11910
--vgdb-error=N is specified, print a bit of text telling the user the
magic commands to give GDB in order to attach to the process.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11822
to print a line of text approximately every 20 million SBs. This is
useful for monitoring the progress of long running programs.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11803
ensure proper cleanup of gdbsrv FIFOs/shmem files with untraced fork/exec
* syswrap-{generic|darwin|aix5}.c : in PRE(sys_execve) : terminate gdbserver
* pub_core_gdbserver.h and m_gdbserver.c : add VG_(gdbserver_prerun_action),
factorising the actions to do by gdbserver at "startup" (i.e. a traced
fork or a traced exec).
* scheduler.c : implement startup action using VG_(gdbserver_prerun_action)
(Philippe Waroquiers, philippe.waroquiers@skynet.be)
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11771
__builtin_setjmp and __builtin_longjmp so that they can be selectively
replaced, on a platform by platform basis. Does not change any
functionality. Related to #259977.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11687
Useful if the program in question catches signals, in which case the usual
"Process terminating..." stack trace isn't shown. Requested by Jesse
Ruderman.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11504
stack-overflow situations. This causes an immense number of L2 misses
which are completely pointless, and the recent increase of the
Valgrind per-thread stack size from 64k to 1M greatly aggravates the
situation.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11343
* handle new pseudo-reg XMM16 in memcheck/mc_machine.c
* run_thread_for_a_while: assert that the amd64 XMM guest reg array
has no holes and the elements are the right size, so that the
(PCMP)ISTRI_* helpers can treat it as an array.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11249
found in the fast-cache.
* reduce max loading of the per-sector TT hash tables from 80% to 65%.
This reduces the number of required probes by a factor of 3.
* when searching for a translation, don't visit the sectors in a fixed
order. Instead, use an MTF array in which the most popular sectors
(in terms of most likely to hold the translation we're looking for)
are visited first. This reduces the number of required probes by
another factor of 2.
These improvements have no effect on small programs, but improve
scalability on big apps. For an application comprising 300k
translations, runtime on Memcheck is reduced by 3% and on None by
about 20%. The average number of probes per fast-cache miss is
reduced from around 22 to less than 5.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11091
requests, since there's no guarantee it is the same size as a machine
word.
This renames the private client request VG_USERREQ__INTERNAL_PRINTF to
VG_USERREQ__INTERNAL_PRINTF_VALIST_BY_REF and changes the
argument-passing accordingly.
The public client requests VG_USERREQ__PRINTF and
VG_USERREQ__PRINTF_BACKTRACE are now deprecated, and handled only in
the case where sizeof(UWord) == sizeof(va_list). In all other cases V
will now print a detailed error message and abort. This breaks binary
compatibility of apps compiled using VALGRIND_PRINTF and
VALGRIND_PRINTF_BACKTRACE, but that's not easy to avoid.
VG_USERREQ__PRINTF and VG_USERREQ__PRINTF_BACKTRACE are now replaced
by VG_USERREQ__PRINTF_VALIST_BY_REF and
VG_USERREQ__PRINTF_BACKTRACE_VALIST_BY_REF. The end-user macros
VALGRIND_PRINTF and VALGRIND_PRINTF_BACKTRACE have been adjusted to
use these new requests instead.
Overall result is that source level compatibility of code using
VALGRIND_PRINTF{,_BACKTRACE} is retained, but binary level
compatibility may be broken, necessitating a rebuild of code using
these macros.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11032
