--branch-sim=yes is specified, Cachegrind simulates a simple indirect
branch predictor and a conditional branch predictor. The latter
considers both the branch instruction's address and the behaviour of
the last few conditional branches. Return stack prediction is not
modelled.
The new counted events are: conditional branches (Bc), mispredicted
conditional branches (Bcm), indirect branches (Bi) and mispredicted
indirect branches (Bim). Postprocessing tools (cg_annotate, cg_merge)
handle the new events as you would expect. Note that branch
simulation is not enabled by default as it gives a 20%-25% slowdown,
so you need to ask for it explicitly using --branch-sim=yes.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@6733
Makefile.am changes for AIX5. Almost all boilerplate stuff fitting in
with the existing factorisation scheme. The only change of interest
is that configure.in now generates automake symbols of name
VGP_platform and VGO_os, whereas previously it just made VG_platform
which was a bit inconsistent with the VGP/VGO/VGA scheme used in C
code.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@6242
system that allows multiple copies of valgrind to be built so that we
can build both x86 and amd64 versions of the tools on amd64 machines.
The launcher is then modified to look at the program being run and
decide which tool to use to run it.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@5027
changes from r4341 through r4787 inclusive). That branch is now dead.
Please do not commit anything else to it.
For the most part the merge was not troublesome. The main areas of
uncertainty are:
- build system: I had to import by hand Makefile.core-AM_CPPFLAGS.am
and include it in a couple of places. Building etc seems to still
work, but I haven't tried building the documentation.
- syscall wrappers: Following analysis by Greg & Nick, a whole lot of
stuff was moved from -generic to -linux after the branch was created.
I think that is satisfactorily glued back together now.
- Regtests: although this appears to work, no .out files appear, which
is strange, and makes it hard to diagnose regtest failures. In
particular memcheck/tests/x86/scalar.stderr.exp remains in a
conflicted state.
- amd64 is broken (slightly), and ppc32 will be unbuildable. I'll
attend to the former shortly.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@4789
get included in the distro now, not just the ones for the arch/platform
that the distro tarball is built on.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@4085
directory, instead of subdirectories. This is simpler and consistent
with how the rest of system is now structured.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3865
which list all the arches/OSes/platforms supported. These are used by
several newly added DIST_SUBDIRS automake commands, which specify that
although when you are building you only want to build for the current
arch/OS/platform, when you do 'make dist' you want every
arch/OS/platform to get included.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3127
- In Cachegrind, abstract out x86-specific use of CPUID to find cache
configuration. Required adding a cachegrind/x86/ directory, and fiddling
a bit with the build system.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2698
directory from the source tree. This resolves bug 83040.
Based on patch from Ralf Wildenhues <Ralf.Wildenhues@gmx.de>.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2450
Valgrind's dependency on the dynamic linker for getting started, and
instead takes things into its own hands.
This checkin doesn't add much in the way of new functionality, but it
is the basis for all future work on Valgrind. It allows us much more
flexibility in implementation, and well as increasing the reliability
of Valgrind by protecting it more from its clients.
This patch requires some changes to tools to update them to the changes
in the tool API, but they are straightforward. See the posting "Heads
up: Full Virtualization" on valgrind-developers for a more complete
description of this change and its effects on you.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2118
- changed deprecated INCLUDES variable to AM_CPPFLAGS
- moved the -DVG_LIBDIR definition from AM_CFLAGS into AM_CPPFLAGS
- generally neatened them up a bit -- removed old commented out stuff, fixed a
couple of other minor things
Everything works for me, hopefully it won't break things for anyone else...
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1680
are only required for regression testing.
If this breaks something, please mail me first instead of reverting.
Thank you.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1530
- added some missing SUBDIRS variables
- removed unnecessary coregrind/demangle/ from some INCLUDES lists
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1137
- changed lots of Makefile.am files
- changed configure.in
- changed lots of #include lines for changed file names
- changed lots of file headers n footers for changed file names
- changed vg_regtest to handle new directory structure -- recursively
traverses subdirectories for .vgtest test files
- changed lots of paths in memcheck/ regression test expected outputs
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1090
automatic cache configuration detection using the CPUID instruction.
This can be overridden from the command-line if necessary.
vg_include.h:
- added the cache_t type and UNDEFINED_CACHE macro
- added command line args (of type cache_t) allowing manual override of
I1/D1/L2 configuration
- added log2(), which is generally useful
vg_main.c, valgrind.in, cachegrind.in:
- added handling of the new --{I1,D1,L2}=<size>,<assoc>,<line_size>
options
vg_cachesim.c:
- lots of stuff for auto-detecting cache configuration with CPUID.
Only handles Intel and AMD chips at the moment, and possibly not all of
them. Falls back onto defaults if anything goes wrong, and the configs
can be manually overridden from the command line anyway.
- now not printing cache summary stats if verbosity == 0. Still writing
cachegrind.out, though.
vg_cachesim_gen.c:
- new file containing stuff shared by the I1/D1/L2 simulations
vg_cachesim_{I1,D1,L2}:
- removed most of it; each now just calls a macro defined in
vg_cachesim_gen.c
vg_cachegen:
- has been cvs removed as it is no longer needed.
Makefile.am:
- added vg_cachesim_gen.c
- removed vg_cachegen
configure.in:
- removed vg_cachegen
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@400
as well as LD_PRELOAD, so as to make our libpthread.so go out of scope
when a child which we don't want to trace, is exec'd. Otherwise the
child can wind up being connected to our libpthread.so but not to
valgrind.so, which is an unworkable combination; you have to be connected
to both or neither.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@291
with the new vg_libpthread.vs linker script. Problem is that builds
where builddir != srcdir don't work now. Don't know how to fix.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@253
- vg_cachesim.c
- vg_cachesim_{I1,D1,L2}.c
- vg_annotate.in
- vg_cachegen.in
Changes to existing files:
- valgrind/valgrind.in, added option:
--cachesim=no|yes [no]
- Makefile/Makefile.am:
* added vg_cachesim.c to valgrind_so_SOURCES var
* added vg_cachesim_I1.c, vg_cachesim_D1.c, vg_cachesim_L2.c to
noinst_HEADERS var
* added vg_annotate, vg_cachegen to 'bin_SCRIPTS' var, and added empty
targets for them
- vg_main.c:
* added two offsets for cache sim functions (put in positions 17a,17b)
* added option handling (detection of --cachesim=yes which turns off of
--instrument);
* added calls to cachesim initialisation/finalisation functions
- vg_mylibc: added some system call wrappers (for chmod, open_write, etc) for
file writing
- vg_symtab2.c:
* allow it to read symbols if either of --instrument or --cachesim is
used
* made vg_symtab2.c:vg_what_{line,fn}_is_this extern, renaming it as
VG_(what_line_is_this) (and added to vg_include.h)
* completely rewrote the read loop in vg_read_lib_symbols, fixing
several bugs. Much better now, although probably not perfect. It's
also relatively fragile -- I'm using the "die immediately if anything
unexpected happens" approach.
- vg_to_ucode.c:
* in VG_(disBB), patching in x86 instruction size into extra4b field of
JMP instructions at the end of basic blocks if --cachesim=yes.
Shifted things around to do this; also had to fiddle around with
single-step stuff to get this to work, by not sticking extra JMPs on
the end of the single-instruction block if there was already one
there (to avoid breaking an assertion in vg_cachesim.c). Did a
similar thing to avoid an extra JMP on huge basic blocks that are
split.
- vg_translate.c:
* if --cachesim=yes call the cachesim instrumentation phase
* made some functions extern and renamed:
allocCodeBlock() --> VG_(allocCodeBlock)()
freeCodeBlock() --> VG_(freeCodeBlock)()
copyUInstr() --> VG_(copyUInstr)()
(added to vg_include.h too)
- vg_include.c: declared
* cachesim offsets
* exports of vg_cachesim.c
* added four new profiling events (increasing VGP_M_CCS to 24 -- I kept
the spare ones)
* added comment about UInstr.extra4b field being used for instr size in
JMPs for cache simulation
- docs/manual.html:
* Added --cachesim option to section 2.5.
* Added cache profiling stuff as section 7.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@168
by the real libpthread.so. In the process fix a bunch of stuff, including
adding thread-specific h_errno and resolver state storage. This fixes
licq crashing at startup.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@149
- Get rid of -Werror; it breaks to many people's builds. It can be
passed in with make variable WERROR if needed.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@127
about doesn't support it
- readd -Werror
- move setting of CFLAGS to the Makefile instead of the configure
script, to avoid that the custom flags we use screw up configure checks
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@113
file vg_libpthread.so.0.c. Now:
* libpthread.so is built as just-another-so, like valgrind.so and
valgrinq.so.
* there is a new dummy target libpthread.so.0 which is build just
by a symlink.
Unfortunately for some reason, when the .so.0 is installed, it gets
a complete copy rather than just the symlink being copied. But it
works, at least.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@68
