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From: Will S. <wil...@vn...> - 2015-10-23 18:41:09
|
Hi Valgrind developers,
I've got an environment (linux/ppc64*) with a stripped libpthread.so.
In this environment, helgrind (and presumably all of it's friends) are
unable to intercept pthread_create@*, and thusly fail to properly track
things. 'nm' is able to see the non-versioned (sans @) reference to the
symbol, so as an experiment I added a hack as seen below, and it seems
to work for this particular environment.
So the questions are.
Do we have any debug hooks that I can quickly tell what other symbols
are not being properly intercepted? At a glance, it looks like some but
not all of the other pthread related symbols are also looking for a
versioned copy of the symbol.
Is this safe to do? / the right thing to do?
Thanks
-Will
---
diff --git a/helgrind/hg_intercepts.c b/helgrind/hg_intercepts.c
index fd53208..02b8a6c 100644
--- a/helgrind/hg_intercepts.c
+++ b/helgrind/hg_intercepts.c
@@ -459,6 +459,11 @@ static int pthread_create_WRK(pthread_t *thread, const pthr
void *(*start) (void *), void *arg) {
return pthread_create_WRK(thread, attr, start, arg);
}
+ PTH_FUNC(int, pthreadZucreateZa, // pthread_create*
+ pthread_t *thread, const pthread_attr_t *attr,
+ void *(*start) (void *), void *arg) {
+ return pthread_create_WRK(thread, attr, start, arg);
+ }
#elif defined(VGO_darwin)
PTH_FUNC(int, pthreadZucreate, // pthread_create
pthread_t *thread, const pthread_attr_t *attr,
|
|
From: <sv...@va...> - 2015-10-23 02:36:16
|
Author: zliu
Date: Fri Oct 23 03:36:09 2015
New Revision: 15717
Log:
Disable none/tests/bug234814 test for TileGx.
Add "bool on_altstack" parameter to VG_(sigframe_create)(..)
in sigframe-tilegx-linux.c
Modified:
trunk/coregrind/m_sigframe/sigframe-tilegx-linux.c
trunk/none/tests/bug234814.vgtest
Modified: trunk/coregrind/m_sigframe/sigframe-tilegx-linux.c
==============================================================================
--- trunk/coregrind/m_sigframe/sigframe-tilegx-linux.c (original)
+++ trunk/coregrind/m_sigframe/sigframe-tilegx-linux.c Fri Oct 23 03:36:09 2015
@@ -137,6 +137,7 @@
/* EXPORTED */
void VG_(sigframe_create)( ThreadId tid,
+ Bool on_altstack,
Addr sp_top_of_frame,
const vki_siginfo_t *siginfo,
const struct vki_ucontext *siguc,
@@ -236,10 +237,6 @@
tst->arch.vex.guest_pc = (Addr) handler;
/* This thread needs to be marked runnable, but we leave that the
caller to do. */
- if (0)
- VG_(printf)("pushed signal frame; sp now = %lx, "
- "next %pc = %lx, status=%d\n",
- (Addr)frame, tst->arch.vex.guest_pc, (Int)tst->status);
}
/* EXPORTED */
Modified: trunk/none/tests/bug234814.vgtest
==============================================================================
--- trunk/none/tests/bug234814.vgtest (original)
+++ trunk/none/tests/bug234814.vgtest Fri Oct 23 03:36:09 2015
@@ -1 +1,2 @@
+prereq: ! ../../tests/arch_test tilegx
prog: bug234814
|