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From: Tom H. <th...@cy...> - 2008-06-04 02:41:47
|
Nightly build on trojan ( x86_64, Fedora Core 6 ) started at 2008-06-04 03:25:04 BST Results differ from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 435 tests, 6 stderr failures, 5 stdout failures, 0 post failures == memcheck/tests/pointer-trace (stderr) memcheck/tests/vcpu_fnfns (stdout) memcheck/tests/x86/bug133694 (stdout) memcheck/tests/x86/bug133694 (stderr) memcheck/tests/x86/scalar (stderr) none/tests/cmdline1 (stdout) none/tests/cmdline2 (stdout) none/tests/mremap2 (stdout) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) ================================================= == Results from 24 hours ago == ================================================= Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 435 tests, 7 stderr failures, 5 stdout failures, 0 post failures == memcheck/tests/pointer-trace (stderr) memcheck/tests/vcpu_fnfns (stdout) memcheck/tests/x86/bug133694 (stdout) memcheck/tests/x86/bug133694 (stderr) memcheck/tests/x86/scalar (stderr) none/tests/cmdline1 (stdout) none/tests/cmdline2 (stdout) none/tests/mremap2 (stdout) helgrind/tests/tc17_sembar (stderr) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) ================================================= == Difference between 24 hours ago and now == ================================================= *** old.short Wed Jun 4 03:33:33 2008 --- new.short Wed Jun 4 03:41:53 2008 *************** *** 8,10 **** ! == 435 tests, 7 stderr failures, 5 stdout failures, 0 post failures == memcheck/tests/pointer-trace (stderr) --- 8,10 ---- ! == 435 tests, 6 stderr failures, 5 stdout failures, 0 post failures == memcheck/tests/pointer-trace (stderr) *************** *** 17,19 **** none/tests/mremap2 (stdout) - helgrind/tests/tc17_sembar (stderr) helgrind/tests/tc20_verifywrap (stderr) --- 17,18 ---- |
|
From: Tom H. <th...@cy...> - 2008-06-04 02:37:41
|
Nightly build on dellow ( x86_64, Fedora 8 ) started at 2008-06-04 03:10:07 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 431 tests, 7 stderr failures, 3 stdout failures, 0 post failures == memcheck/tests/pointer-trace (stderr) memcheck/tests/vcpu_fnfns (stdout) memcheck/tests/x86/scalar (stderr) none/tests/blockfault (stderr) none/tests/mremap2 (stdout) none/tests/pth_cvsimple (stdout) helgrind/tests/tc18_semabuse (stderr) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) |
|
From: Stephen M.
|
>>>>> "JC" == Jim Clause <cl...@cc...> writes:
JC> Hi,
JC> I'm encountering a case where I'm getting an unexpected (to me) IR
JC> generation from VEX. When VEX generates IR from the following
JC> function:
JC> Dump of assembler code for function main:
....
JC> 0x00001ff4 <main+38>: movb $0x1,(%eax)
JC> The movb instruction at main+38 is transformed into STle(t21) =
JC> 0x1:I8, which looks good except that the type of the destination
JC> is Ity_I32 not Ity_I8 like I would expect. Is Ity_I32 the correct
JC> size for t21?
In full, it's translated into something like:
------ IMark(0x804839A, 3) ------
PUT(60) = 0x804839A:I32
t21 = GET:I32(0)
STle(t21) = 0x1:I8
STle represents a store to memory, and the argument in parentheses is
the address of the location to store. So I think that it's right for
it to be word-sized (32 bits for an x86), not the size of the data
you're storing. In the full example, you can see that the value of t21
is GET:I32(0), which is the way the IR refers to %eax in the guest
state.
JC> If it's not a possible fix might be to change disAMode_copy2tmp to
JC> generate a new temporary that the same size as it's argument
JC> rather than just a new Ity_I32.
I think the argument to disAMode_copy2tmp for the x86 is already
always an I32 expression, as suggested by the parameter name "addr32".
If it were anything else, it would be an IR type error to assign it to
an I32 temporary: you always have to be explicit about size
conversions in IR.
Hope this helps,
-- Stephen
|
|
From: Tom H. <th...@cy...> - 2008-06-04 02:23:11
|
Nightly build on gill ( x86_64, Fedora Core 2 ) started at 2008-06-04 03:00:03 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 437 tests, 30 stderr failures, 3 stdout failures, 0 post failures == memcheck/tests/malloc_free_fill (stderr) memcheck/tests/origin5-bz2 (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/stack_switch (stderr) memcheck/tests/varinfo6 (stderr) memcheck/tests/x86/scalar (stderr) memcheck/tests/x86/scalar_supp (stderr) none/tests/amd64/insn_ssse3 (stdout) none/tests/amd64/insn_ssse3 (stderr) none/tests/amd64/ssse3_misaligned (stderr) none/tests/blockfault (stderr) none/tests/fdleak_fcntl (stderr) none/tests/mremap2 (stdout) none/tests/x86/insn_ssse3 (stdout) none/tests/x86/insn_ssse3 (stderr) none/tests/x86/ssse3_misaligned (stderr) helgrind/tests/hg01_all_ok (stderr) helgrind/tests/hg02_deadlock (stderr) helgrind/tests/hg03_inherit (stderr) helgrind/tests/hg04_race (stderr) helgrind/tests/hg05_race2 (stderr) helgrind/tests/tc01_simple_race (stderr) helgrind/tests/tc05_simple_race (stderr) helgrind/tests/tc06_two_races (stderr) helgrind/tests/tc09_bad_unlock (stderr) helgrind/tests/tc14_laog_dinphils (stderr) helgrind/tests/tc16_byterace (stderr) helgrind/tests/tc17_sembar (stderr) helgrind/tests/tc19_shadowmem (stderr) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) helgrind/tests/tc23_bogus_condwait (stderr) |
|
From: Jim C. <cl...@cc...> - 2008-06-04 01:34:50
|
Hi, I'm encountering a case where I'm getting an unexpected (to me) IR generation from VEX. When VEX generates IR from the following function: Dump of assembler code for function main: 0x00001fce <main+0>: push %ebp 0x00001fcf <main+1>: mov %esp,%ebp 0x00001fd1 <main+3>: sub $0x28,%esp 0x00001fd4 <main+6>: movl $0x0,-0x10(%ebp) 0x00001fdb <main+13>: movl $0x40,(%esp) 0x00001fe2 <main+20>: call 0x3005 <dyld_stub_malloc> 0x00001fe7 <main+25>: mov %eax,-0x10(%ebp) 0x00001fea <main+28>: lea -0x10(%ebp),%eax 0x00001fed <main+31>: mov %eax,-0xc(%ebp) 0x00001ff0 <main+34>: mov -0xc(%ebp),%eax 0x00001ff3 <main+37>: inc %eax 0x00001ff4 <main+38>: movb $0x1,(%eax) 0x00001ff7 <main+41>: mov $0x0,%eax 0x00001ffc <main+46>: leave 0x00001ffd <main+47>: ret End of assembler dump. The movb instruction at main+38 is transformed into STle(t21) = 0x1:I8, which looks good except that the type of the destination is Ity_I32 not Ity_I8 like I would expect. Is Ity_I32 the correct size for t21? If it's not a possible fix might be to change disAMode_copy2tmp to generate a new temporary that the same size as it's argument rather than just a new Ity_I32. Thanks, Jim |