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69 commits

Author SHA1 Message Date
Cyrill Gorcunov
11eb2ca409 Add ALIGN helper 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-16 18:16:12 +04:00
Cyrill Gorcunov
85506595e9 restorer: Drop futex constants 
We don't use them yet, no need to carry.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 23:05:36 +04:00
Cyrill Gorcunov
b712182308 Gather file names formats in one place 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 18:35:55 +04:00
Cyrill Gorcunov
0fd17a08cb Bring some order in usage of VMA entries helpers 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 17:12:29 +04:00
Cyrill Gorcunov
bb15450d98 image: Drop tls_array from the image 
We use registers set anyway

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 14:57:39 +04:00
Cyrill Gorcunov
35781a8c6d util: Drop redundant vma_area->vma.status assignment 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 13:37:17 +04:00
Cyrill Gorcunov
33ea81e606 Drop redundant pstree_item_info 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 13:19:12 +04:00
Cyrill Gorcunov
4619e48574 dump: parasite -- Drop unneeded error codes 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 12:22:40 +04:00
Cyrill Gorcunov
f89f67914e dump: parasite -- Drop unneeded sections 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 12:21:17 +04:00
Cyrill Gorcunov
72d3d2326a dump: Drop parasite_complete_ip from parasite_ctl 
It was used for debug only to be able to work without
task seizing. Not needed anymore.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 12:15:08 +04:00
Cyrill Gorcunov
417fe5d8e1 image: Drop redundant VMA_FORCE_WRITE 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 11:57:24 +04:00
Cyrill Gorcunov
2c0e5db7eb image: Drop redundant offsetof 
Already in compiler.h

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 11:54:01 +04:00
Cyrill Gorcunov
5ae9d9feb8 cleanup: parasite - Drop PARASITE_CMD_RESTORECORE 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-14 18:50:20 +04:00
Cyrill Gorcunov
6a26e75aba cleanup: Drop elf references 
We dont use Elf restore anymore, drop it.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-13 13:07:00 +04:00
Cyrill Gorcunov
e793eb7557 cleanup: Drop unneeded sources 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-13 13:00:32 +04:00
Cyrill Gorcunov
1e7bbd35de restore: Add threads restoration 
Now threads restortion (and TLS as well) works.
Threads test reports the following

    2775 (main): Counter value:    3 tls_data =    1
    2775 (main): ( 0) fsgs_base 7f9597aa46f0
    2775 (main): ( 0) fsgs_base        0
    2775 (thr3): Counter value:    4 tls_data =    4
    2775 (thr3): ( 0) fsgs_base 42c57940
    2775 (thr3): ( 0) fsgs_base        0
    2775 (thr2): Counter value:    3 tls_data =    2
    2775 (thr2): ( 0) fsgs_base 42456940
    2775 (thr2): ( 0) fsgs_base        0
    2775 (thr1): Counter value:    4 tls_data =    3
    2775 (thr1): ( 0) fsgs_base 40c62940
    2775 (thr1): ( 0) fsgs_base        0
    2775 (main): Counter value:    4 tls_data =    1
    2775 (main): ( 0) fsgs_base 7f9597aa46f0
    2775 (main): ( 0) fsgs_base        0
    2775 (thr1): Counter value:    5 tls_data =    3
    2775 (thr1): ( 0) fsgs_base 40c62940
    2775 (thr1): ( 0) fsgs_base        0

as expected.

This commits merges all preliminary commits into
the final one (sigreturn branch was always experimental
and forced update).

Still some problems remain:

1) While creating threads with clone() the
   flags are to be revisited. We use some predefined
   set here but it's not really correct.

2) No setup of pids in PCB thread zone.

3) No restore of FPU.

But at least on some basic tasks restore works well.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-12 19:26:40 +04:00
Cyrill Gorcunov
0a26593a3b dump, restore: Add blocked signals mask 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-09 00:29:41 +04:00
Cyrill Gorcunov
566a900e4e restore: Use prctl for vDSO restoration 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 17:53:47 +04:00
Cyrill Gorcunov
76df6d9ed5 syscalls: Add sys_prctl helper 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 16:39:21 +04:00
Cyrill Gorcunov
da8f61c1c8 dump: Add GS-TLS handling 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 17:44:00 +04:00
Cyrill Gorcunov
8a8850d146 dump: Dump TLS via sys_arch_prctl 
As such -- no need for kernel patch.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 16:29:36 +04:00
Cyrill Gorcunov
3725fd326d syscalls: Add sys_arch_prctl helper 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 15:24:07 +04:00
Cyrill Gorcunov
d6e7afe3d8 syscalls: Add sys_set/get_thread_area helpers 
They are actually banned in kernel for now, but
we might end up needing them, so better to have
them in-place.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 14:47:04 +04:00
Cyrill Gorcunov
bf30aa1130 restore: Drop unused struct partial_pt_regs 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-03 19:31:07 +04:00
Cyrill Gorcunov
489745f235 restore: A number of fixups and debug printing 
An idea is to align restorer size to be sure it
wont be stripped in a middle of code.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-03 11:58:45 +04:00
Cyrill Gorcunov
ed3c4fbacf syscalls: Get rid of mnemonic names for registers 
Use explicit registers name instead just to be sure it
wont cause side effects on most gcc versions.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-03 11:55:29 +04:00
Cyrill Gorcunov
bf41dcac48 syscalls: Get rid of register variables 
It's been found that gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
ignores register variables so to be on a safe side rewrite
syscalls with inline assembly without them.

nb: gcc version 4.6.1 20110908 (Red Hat 4.6.1-9) (GCC)
compiles them correctly.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-31 16:33:43 +04:00
Cyrill Gorcunov
b99eae2809 restore: Add some more structures for frame setup 
Some of them are already in system header files
but until I debug all things I simply picked up
kernel's definitions just to be more-less safe.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-29 01:13:32 +04:00
Cyrill Gorcunov
a74f379d60 syscall: Add sys_unlink 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-28 14:03:59 +04:00
Cyrill Gorcunov
98cf8f1a0f syscall: Add getpid syscall 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-28 00:40:20 +04:00
Cyrill Gorcunov
aaf3291e00 restore: Dump current VMAs 
Restorer needs to know which VMAs
to unmap before map a new set.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-26 22:50:46 +04:00
Cyrill Gorcunov
2cc7488de2 dump: Make VMA parsing to handle absence of map_files 
Needed in testing purposes. Also make free_mappings
being a global one (will need it in restorer).

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-26 22:48:10 +04:00
Cyrill Gorcunov
fa56125d16 util: Move memcopy helper into the header 
Since we will need it in parasite and restorer
code rename it to inline_memcpy to avoid name
collision.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-26 18:05:32 +04:00
Cyrill Gorcunov
168d8cf17d restore: restorer is finally alive 
No real restore code yet, but at least it
produce message ;)

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-26 17:35:50 +04:00
Cyrill Gorcunov
791f2c8c25 restore: Call for indirect execution 
Doesn't work at moment but just to have
a snapshot point.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-26 11:16:00 +04:00
Cyrill Gorcunov
b016db7dea syscall: Add sys_exit 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-26 10:58:10 +04:00
Cyrill Gorcunov
0d20dd0b41 util: Add hex_dump helper 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-26 10:10:19 +04:00
Cyrill Gorcunov
ae41bc9d2a restore: Add restore_core_args facility 
More convenient instead of manual offset calculations.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-26 00:30:41 +04:00
Cyrill Gorcunov
f8c46a5de1 restore: Add rt_sigframe 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-25 19:27:56 +04:00
Cyrill Gorcunov
c32845ef60 dump: Shrink struct core_entry twice 
No need to keep it that big. Note from
this patch if we ever deside to use kernel
elf approach -- the image structures are
to be updated in kernel as well.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-25 14:59:35 +04:00
Cyrill Gorcunov
57b45ea5eb restore: Preliminary scheme for restore 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-24 23:56:36 +04:00
Cyrill Gorcunov
63e08215aa restore: Add restorer test 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-24 22:23:06 +04:00
Cyrill Gorcunov
0fe80627d6 syscall: Use always_inline instead of __always_inline 
__always_inline is internal defenition

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-24 22:18:13 +04:00
Cyrill Gorcunov
79c67231a1 syscall: The should be always inlined 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-24 22:16:14 +04:00
Cyrill Gorcunov
5fd13e04ab syscall: Add __NR_rt_sigreturn 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-24 17:17:39 +04:00
Cyrill Gorcunov
ea0f8eac1d util: Add open_fmt_ro helper 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-24 13:56:03 +04:00
Cyrill Gorcunov
f8ad351f4d util: Make open_fmt being more general 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-24 13:51:41 +04:00
Cyrill Gorcunov
26857cc4e5 util: Move various helpers there 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-24 13:43:21 +04:00
Cyrill Gorcunov
af647ce009 dump: Dump threads params as well 
We only need registers at the moment

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-23 12:43:52 +04:00
Cyrill Gorcunov
611debc312 dump: Add parsing of thread pids 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-23 12:43:15 +04:00