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From: Maurice v. d. P. <gri...@ge...> - 2004-11-07 20:31:56
|
On Sun, Nov 07, 2004 at 07:26:27PM +0000, Nicholas Nethercote wrote: > On Sun, 7 Nov 2004, Maurice van der Pot wrote: >=20 > >At the moment I'm not sure where I can insert my own code for all these > >synth_INSTR calls. >=20 > I would still recommend passing extra args to the relevant C functions=20 > rather than doing extra C function calls; C calls are expensive. I agree, but unfortunately only LOADV and STOREV call C functions. The=20 rest just emits instructions. Maurice. --=20 Maurice van der Pot Gentoo Linux Developer gri...@ge... http://www.gentoo.org Creator of BiteMe! gri...@kf... http://www.kfk4ever.com |
|
From: Nicholas N. <nj...@ca...> - 2004-11-07 19:26:32
|
On Sun, 7 Nov 2004, Maurice van der Pot wrote: > I'd prefer to do all this stuff in C functions, so I would like to use the > synth_ccall/synth_call(?) functions. synth_ccall() is for calling C functions, synth_call is for calling asm subroutines. You want synth_ccall(). > What is the exact restriction on calling > synth_ccall? At most once at the end of a function? Or must it be the only > code generating part of a synth_INSTR call? The latter, IIRC. > At the moment I'm not sure where I can insert my own code for all these > synth_INSTR calls. I would still recommend passing extra args to the relevant C functions rather than doing extra C function calls; C calls are expensive. N |
|
From: Maurice v. d. P. <gri...@ge...> - 2004-11-07 19:01:13
|
On Sun, Nov 07, 2004 at 03:43:00PM +0000, Nicholas Nethercote wrote: > On Sun, 7 Nov 2004, Maurice van der Pot wrote: =20 > >2) Is there a way to get to a register itself instead of the value it > > contains, from a helper function? In helper2 I would like to somehow > > modify some information about tv_reg dependent on both tv_reg's own > > value and the value of a_reg. > > > >A 3) Alternatively i might want to add code to do this to the first help= er > > function. Is it possible to get to the register that will receive the > > return value? Or should I modify synth_ccall to receive not only the > > return value but also the extra information that needs to be remembered > > about the return value register? >=20 > If it's only LOADV that you want to augment, I would add an extra arg to= =20 > the functions that get called by LOADV, and pass in whatever extra info= =20 > you need that way, if you see what I mean. It's not only LOADV. For each move of V bits I also need the origin address so I can update the administration that keeps track of the origin.=20 I'd prefer to do all this stuff in C functions, so I would like to use the= =20 synth_ccall/synth_call(?) functions. What is the exact restriction on calli= ng synth_ccall? At most once at the end of a function? Or must it be the only code generating part of a synth_INSTR call?=20 At the moment I'm not sure where I can insert my own code for all these=20 synth_INSTR calls. Regards, Maurice. --=20 Maurice van der Pot Gentoo Linux Developer gri...@ge... http://www.gentoo.org Creator of BiteMe! gri...@kf... http://www.kfk4ever.com |
|
From: Nicholas N. <nj...@ca...> - 2004-11-07 15:43:20
|
On Sun, 7 Nov 2004, Maurice van der Pot wrote:
> 1) Is it allowed to simply call VG_(synth_ccall) multiple times from
> within synth_LOADV for instance? I was planning something like
> this:
>
> VG_(synth_ccall) ( helper, 1, 1, argv, tagv, tv_reg,
> regs_live_before, regs_live_after );
>
> UInt argv2[] = { a_reg, tv_reg };
> Tag tagv2[] = { RealReg, RealReg };
>
> VG_(synth_ccall) ( helper2, 2, 2, argv2, tagv2, INVALID_REALREG,
> regs_live_after, regs_live_after );
No, as this comment says:
WARNING: a UInstr should *not* be translated with synth_ccall followed
by some other x86 assembly code; vg_liveness_analysis() doesn't expect
such behaviour and everything will fall over.
> 2) Is there a way to get to a register itself instead of the value it
> contains, from a helper function? In helper2 I would like to somehow
> modify some information about tv_reg dependent on both tv_reg's own
> value and the value of a_reg.
>
>A 3) Alternatively i might want to add code to do this to the first helper
> function. Is it possible to get to the register that will receive the
> return value? Or should I modify synth_ccall to receive not only the
> return value but also the extra information that needs to be remembered
> about the return value register?
If it's only LOADV that you want to augment, I would add an extra arg to
the functions that get called by LOADV, and pass in whatever extra info
you need that way, if you see what I mean.
N
|
|
From: Maurice v. d. P. <gri...@ge...> - 2004-11-07 14:29:32
|
Hi,
I've been studying valgrind's source and I have a few questions.
1) Is it allowed to simply call VG_(synth_ccall) multiple times from=20
within synth_LOADV for instance? I was planning something like=20
this:
VG_(synth_ccall) ( helper, 1, 1, argv, tagv, tv_reg,
regs_live_before, regs_live_after );
UInt argv2[] =3D { a_reg, tv_reg };
Tag tagv2[] =3D { RealReg, RealReg };
VG_(synth_ccall) ( helper2, 2, 2, argv2, tagv2, INVALID_REALREG,
regs_live_after, regs_live_after );
2) Is there a way to get to a register itself instead of the value it
contains, from a helper function? In helper2 I would like to somehow
modify some information about tv_reg dependent on both tv_reg's own=20
value and the value of a_reg.
3) Alternatively i might want to add code to do this to the first helper
function. Is it possible to get to the register that will receive the
return value? Or should I modify synth_ccall to receive not only the
return value but also the extra information that needs to be remembered
about the return value register?
I hope I'm making sense.
Best regards,
Maurice.
--=20
Maurice van der Pot
Gentoo Linux Developer gri...@ge... http://www.gentoo.org
Creator of BiteMe! gri...@kf... http://www.kfk4ever.com
|
|
From: Nicholas N. <nj...@ca...> - 2004-11-07 10:58:26
|
CVS commit by nethercote:
Add very thorough string functions test from glibc.
A str_tester.c 1.1 [POSSIBLY UNSAFE: printf] [UNKNOWN]
A str_tester.stderr.exp 1.1
A str_tester.vgtest 1.1
M +5 -1 Makefile.am 1.54
--- valgrind/memcheck/tests/Makefile.am #1.53:1.54
@@ -55,4 +55,5 @@
signal2.stderr.exp \
signal2.stdout.exp signal2.vgtest \
+ str_tester.stderr.exp str_tester.vgtest \
supp1.stderr.exp supp1.vgtest \
supp2.stderr.exp supp2.vgtest \
@@ -79,5 +80,6 @@
nanoleak new_nothrow \
null_socket overlap \
- realloc1 realloc2 realloc3 sigaltstack signal2 supp1 supp2 suppfree \
+ realloc1 realloc2 realloc3 sigaltstack signal2 \
+ str_tester supp1 supp2 suppfree \
trivialleak weirdioctl \
mismatches new_override metadata threadederrno \
@@ -138,4 +140,6 @@
weirdioctl_SOURCES = weirdioctl.c
metadata_SOURCES = metadata.c
+str_tester_SOURCES = str_tester.c
+str_tester_CFLAGS = $(AM_CFLAGS) -Wno-shadow
threadederrno_SOURCES = threadederrno.c
threadederrno_LDADD = -lpthread
|
|
From: <js...@ac...> - 2004-11-07 03:56:15
|
Nightly build on phoenix ( SuSE 9.1 ) started at 2004-11-07 03:50:00 GMT Checking out source tree ... done Configuring ... done Building ... done Running regression tests ... done Last 20 lines of log.verbose follow insn_basic: valgrind ./insn_basic insn_cmov: valgrind ./insn_cmov insn_fpu: valgrind ./insn_fpu insn_mmx: valgrind ./insn_mmx insn_mmxext: (cpu_test failed, skipping) insn_sse: valgrind ./insn_sse insn_sse2: (cpu_test failed, skipping) int: valgrind ./int pushpopseg: valgrind ./pushpopseg rcl_assert: valgrind ./rcl_assert seg_override: valgrind ./seg_override -- Finished tests in none/tests/x86 ------------------------------------ yield: valgrind ./yield -- Finished tests in none/tests ---------------------------------------- == 178 tests, 2 stderr failures, 0 stdout failures ================= corecheck/tests/fdleak_fcntl (stderr) memcheck/tests/writev (stderr) make: *** [regtest] Error 1 |
|
From: Tom H. <to...@co...> - 2004-11-07 03:27:24
|
Nightly build on dunsmere ( Fedora Core 2 ) started at 2004-11-07 03:20:02 GMT Checking out source tree ... done Configuring ... done Building ... done Running regression tests ... done Last 20 lines of log.verbose follow int: valgrind ./int pushpopseg: valgrind ./pushpopseg rcl_assert: valgrind ./rcl_assert seg_override: valgrind ./seg_override -- Finished tests in none/tests/x86 ------------------------------------ yield: valgrind ./yield -- Finished tests in none/tests ---------------------------------------- == 183 tests, 9 stderr failures, 0 stdout failures ================= corecheck/tests/fdleak_cmsg (stderr) corecheck/tests/fdleak_fcntl (stderr) corecheck/tests/fdleak_ipv4 (stderr) corecheck/tests/fdleak_socketpair (stderr) memcheck/tests/badpoll (stderr) memcheck/tests/buflen_check (stderr) memcheck/tests/execve (stderr) memcheck/tests/execve2 (stderr) memcheck/tests/writev (stderr) make: *** [regtest] Error 1 |
|
From: Tom H. <th...@cy...> - 2004-11-07 03:20:12
|
Nightly build on audi ( Red Hat 9 ) started at 2004-11-07 03:15:01 GMT Checking out source tree ... done Configuring ... done Building ... done Running regression tests ... done Last 20 lines of log.verbose follow int: valgrind ./int pushpopseg: valgrind ./pushpopseg rcl_assert: valgrind ./rcl_assert seg_override: valgrind ./seg_override -- Finished tests in none/tests/x86 ------------------------------------ yield: valgrind ./yield -- Finished tests in none/tests ---------------------------------------- == 183 tests, 9 stderr failures, 0 stdout failures ================= corecheck/tests/fdleak_cmsg (stderr) corecheck/tests/fdleak_fcntl (stderr) corecheck/tests/fdleak_ipv4 (stderr) corecheck/tests/fdleak_socketpair (stderr) memcheck/tests/badpoll (stderr) memcheck/tests/buflen_check (stderr) memcheck/tests/execve (stderr) memcheck/tests/execve2 (stderr) memcheck/tests/writev (stderr) make: *** [regtest] Error 1 |
|
From: Tom H. <th...@cy...> - 2004-11-07 03:13:53
|
Nightly build on ginetta ( Red Hat 8.0 ) started at 2004-11-07 03:10:01 GMT Checking out source tree ... done Configuring ... done Building ... done Running regression tests ... done Last 20 lines of log.verbose follow cpuid: valgrind ./cpuid dastest: valgrind ./dastest fpu_lazy_eflags: valgrind ./fpu_lazy_eflags insn_basic: valgrind ./insn_basic insn_cmov: valgrind ./insn_cmov insn_fpu: valgrind ./insn_fpu insn_mmx: valgrind ./insn_mmx insn_mmxext: valgrind ./insn_mmxext insn_sse: valgrind ./insn_sse insn_sse2: (cpu_test failed, skipping) int: valgrind ./int pushpopseg: valgrind ./pushpopseg rcl_assert: valgrind ./rcl_assert seg_override: valgrind ./seg_override -- Finished tests in none/tests/x86 ------------------------------------ yield: valgrind ./yield -- Finished tests in none/tests ---------------------------------------- == 183 tests, 0 stderr failures, 0 stdout failures ================= |
|
From: Tom H. <th...@cy...> - 2004-11-07 03:08:27
|
Nightly build on alvis ( Red Hat 7.3 ) started at 2004-11-07 03:05:02 GMT Checking out source tree ... done Configuring ... done Building ... done Running regression tests ... done Last 20 lines of log.verbose follow fpu_lazy_eflags: valgrind ./fpu_lazy_eflags insn_basic: valgrind ./insn_basic insn_cmov: valgrind ./insn_cmov insn_fpu: valgrind ./insn_fpu insn_mmx: valgrind ./insn_mmx insn_mmxext: valgrind ./insn_mmxext insn_sse: valgrind ./insn_sse insn_sse2: (cpu_test failed, skipping) int: valgrind ./int pushpopseg: valgrind ./pushpopseg rcl_assert: valgrind ./rcl_assert seg_override: valgrind ./seg_override -- Finished tests in none/tests/x86 ------------------------------------ yield: valgrind ./yield -- Finished tests in none/tests ---------------------------------------- == 183 tests, 1 stderr failure, 0 stdout failures ================= memcheck/tests/vgtest_ume (stderr) make: *** [regtest] Error 1 |
|
From: Tom H. <th...@cy...> - 2004-11-07 03:03:44
|
Nightly build on standard ( Red Hat 7.2 ) started at 2004-11-07 03:00:01 GMT Checking out source tree ... done Configuring ... done Building ... done Running regression tests ... done Last 20 lines of log.verbose follow fpu_lazy_eflags: valgrind ./fpu_lazy_eflags insn_basic: valgrind ./insn_basic insn_cmov: valgrind ./insn_cmov insn_fpu: valgrind ./insn_fpu insn_mmx: valgrind ./insn_mmx insn_mmxext: valgrind ./insn_mmxext insn_sse: valgrind ./insn_sse insn_sse2: (cpu_test failed, skipping) int: valgrind ./int pushpopseg: valgrind ./pushpopseg rcl_assert: valgrind ./rcl_assert seg_override: valgrind ./seg_override -- Finished tests in none/tests/x86 ------------------------------------ yield: valgrind ./yield -- Finished tests in none/tests ---------------------------------------- == 183 tests, 1 stderr failure, 0 stdout failures ================= memcheck/tests/vgtest_ume (stderr) make: *** [regtest] Error 1 |