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300 Commits

Author SHA1 Message Date
Ellery D'Souza
d4097e3be9 Fixed missing header file "sys/types.h" to fix compiler error 2015-01-26 15:10:21 -06:00
Paul Sbarra
58de1f7c85 migrate to go.sys subrepository 
As of go version 1.4 the standard library syscall package is "locked
down" and code outside of the standard library is recommended to migrate
to the go.sys subrepository.

Reference: https://golang.org/s/go1.4-syscall
 2015-01-25 22:43:47 -06:00
Michael Gehring
0d08380555 Fix PtracePeekUser 2015-01-25 21:57:56 +01:00
Michael Gehring
2a66ecb10b Some hw breakpoint fixes 
Enable usage of dr1-dr3.  Clear control bits when a breakpoint
is disabled. Use DR_LEN_1 instead of DR_LEN_8 so breakpoint work on
unaligned adresses.

Fixes #51.
 2015-01-24 11:10:42 +01:00
Derek Parker
ff789d1df6 Update error message for missing .debug_frame 2015-01-23 14:59:42 -06:00
epipho
d7e535f25b Dont panic if .debug_frame section is not found. Log and exit 2015-01-23 14:57:31 -06:00
Ivar Gaitan
d9c3488f12 Report caller file:line in assert helper fn 2015-01-23 14:55:24 -06:00
Paul Nasrat
46e5cfd399 proctl: propagate underlying error for failing hardware breakpoint. 
Improves error message on systems that delve is failing on.
 2015-01-22 17:10:48 -05:00
epipho
1782e13f74 Genericized slice reading 2015-01-20 01:37:52 -05:00
epipho
e2236664dd Genericized array reading 2015-01-20 00:32:08 -05:00
epipho
99b614a028 Adding support for reading function pointers and mapping them to function names 2015-01-19 23:15:40 -05:00
epipho
056df44318 Support for uint and boolean types 2015-01-19 22:18:17 -05:00
epipho
67ad85feec readString can now read strings of any length as well as sliced strings 2015-01-19 19:30:15 -05:00
Derek Parker
76076791b9 Fix stack frame calculation bug 
There were certain instances where the calculation of the stack frame
was incorrect, causing for garbage to be returned by a print command.
 2015-01-16 15:30:22 -06:00
Derek Parker
87c3b0a7d3 Minor syntax cleanup 2015-01-14 17:43:34 -06:00
Derek Parker
ecacbc8a40 Remove bonus comment 2015-01-14 17:40:52 -06:00
Derek Parker
fa62905a7e Remove slight duplication 2015-01-14 17:36:35 -06:00
Derek Parker
bcc4943abd Move breakpointIDCounter to DebuggedProcess struct 2015-01-14 09:01:36 -06:00
Derek Parker
d7cb4dcaca Remove parseProcessStatus and only report stop 
Currently there is no need for the other items in the ProcessStatus
struct, we really only care if the process is not running, so we can
avoid sending signals to it.
 2015-01-14 08:58:32 -06:00
Derek Parker
fbbe9aaa5e Implement usage of hardware breakpoints 
Currently only works for amd64 processors.
 2015-01-12 21:56:25 -06:00
Derek Parker
c0ae1ee1c6 Remove erroneous fmt.Println calls 2015-01-10 14:33:49 -06:00
Derek Parker
bc39ddfbbc Handle SIGINT 
Handle SIGINT by stopping the traced program and then displaying a
prompt to the user for commands. If the traced process is not running,
this is a noop.

Closes #30
 2015-01-09 16:24:33 -06:00
Derek Parker
6acb912a0c Minor comment cleanup 2015-01-02 10:09:32 -06:00
epipho
7c61e2a1cb EvalSymbol supports evaluating struct members on pointers. Fixed panic 
when evaluating a nil pointer.
 2015-01-02 10:02:56 -06:00
Derek Parker
eed50f3e52 Kill newline 2015-01-01 12:35:03 -06:00
epipho
709347512c Breakpoints now have ids. Consolidated location lookup logic 2015-01-01 08:23:55 -05:00
Derek Parker
1289f38f87 kill whitespace 2014-12-31 15:54:52 -06:00
epipho
2c5527c6c9 Refactor member variable evaluation so it works in all cases 2014-12-31 16:20:26 -05:00
epipho
ed6d4049b6 Extracting common dwarf reader functionality into its own area 2014-12-31 11:46:58 -06:00
epipho
c0fd1a0295 Refactor extractValue so OP_DW_addr will work 2014-12-31 02:41:25 -05:00
epipho
07940dc59e Added info locals and info args commands 2014-12-30 12:58:44 -05:00
Derek Parker
cc8563a2a2 Remove unnecessary type conversion 2014-12-30 09:23:22 -06:00
Derek Parker
849a201d4a Extract function to set slice len 2014-12-29 21:05:22 -06:00
Derek Parker
4dce356497 Slight improvement for readIntSlice 2014-12-29 20:59:52 -06:00
Derek Parker
d7684de92d Use ptrsize instead of assuming 2014-12-29 17:04:08 -06:00
Derek Parker
46be509d6a Improve array type output 2014-12-29 16:59:41 -06:00
Derek Parker
623ec5e53d Improve array evaluation support 
* First of a few commits to allow for evaluating arrays of arbitrary
  types
* Adds support for 32 bit integer arrays
 2014-12-28 22:37:18 -06:00
Derek Parker
9e8ac82104 Minor refactoring / code cleanup 2014-12-28 20:48:58 -06:00
Derek Parker
04da3fcbc8 Don't assume pointer size 2014-12-19 23:10:32 -06:00
Derek Parker
8e40467c95 Use ByteSize for reading string size 2014-12-19 23:10:32 -06:00
Derek Parker
2d21cad8dc Support Go1.4rc1 2014-12-10 22:31:12 -06:00
Derek Parker
e0738c417c Remove helper file & further isolate linux code 2014-12-09 10:51:17 -06:00
Derek Parker
813340abe6 Remove erroneous stuff from helper package 2014-12-09 10:35:55 -06:00
Derek Parker
12949e3406 Remove linux build requirement on variables source file 2014-12-08 22:33:52 -06:00
Derek Parker
460bedf4f4 Use generic ReadMemory isntead of Ptrace 2014-12-08 22:31:51 -06:00
Derek Parker
e784e5d56d Isolate linux specific memory reading in threads file 2014-12-08 17:56:02 -06:00
Derek Parker
e299dfde08 Isolate linux specific register getters / setters 2014-12-08 17:54:34 -06:00
Derek Parker
64e01bfed1 Begin thread code isolation 2014-12-08 17:40:59 -06:00
Derek Parker
d41bbbf5c3 Further isolate Linux specific code 2014-12-08 17:15:52 -06:00
Derek Parker
2ecf625c5b Remove unused struct member 2014-12-08 12:15:08 -06:00
Derek Parker
53ae81291b Isolate proctl_*.go linux specific code 2014-12-05 16:17:10 -06:00
Derek Parker
1b819915fd Remove unused function 2014-12-05 12:39:54 -06:00
Derek Parker
f8bb5acc9b Return more meaningful errors 2014-12-04 15:26:53 -06:00
Derek Parker
d14183a2a2 Fix: do not always use pid thread for clearing bp 
Since fixing scheduler handling bugs, a new bug was exposed where Step
was calling Clear off of the DebuggedProcess struct. This is incorrect,
 and should be handled by the thread itself and not delegated.
 2014-12-04 15:04:48 -06:00
Derek Parker
a039e5a93d Add basic support for evaluating struct members 2014-12-02 23:30:39 -06:00
Derek Parker
46760aaa1c Rename fn for clarity 2014-12-02 16:44:51 -06:00
Derek Parker
2046bc8192 Check for err on Dwarf fn seek 2014-12-02 16:42:50 -06:00
Derek Parker
67e2455caf Fix format string 2014-12-02 12:42:17 -06:00
Derek Parker
5ece8d3b69 Use allm info to attach to existing threads 
This remove reliance on the procfs for figuring out what threads are
already active when we attach to a running process. The allm linked list
will be present to matter what OS we're on, whereas procfs will not be
present everywhere.

This is the first in a series of steps to support more platforms.
 2014-12-02 10:15:51 -06:00
Derek Parker
74defb1028 Remove unused struct 2014-11-28 20:16:46 -06:00
Derek Parker
afa3a9cc6c Remove timeoutWait due to improved scheduler handling 2014-11-26 20:45:29 -06:00
Derek Parker
16392ce609 Improve handling of Go runtime scheduler 2014-11-26 20:35:53 -06:00
Derek Parker
13a3112b6b Improve Go 1.4 support / cleanup goroutine printing 2014-11-25 20:37:43 -06:00
Derek Parker
04097af74d Avoid carrying closure around with goroutine 2014-11-25 09:22:34 -06:00
Derek Parker
36d3ecd6e1 Update documentation 2014-11-24 18:19:40 -06:00
Derek Parker
3b2b17938b Improve support for goroutine context switching 
Remove any assumption that a wait syscall on a thread id after a
continue will return. Any time we continue a thread, wait for activity
from any thread, because the scheduler may well have switched contexts
on us due to syscall entrace, channel op, etc...

There are several more things to be done here including:

* Potential tracking of goroutine id as we jump around to thread
  contexts.
* Potential of selectively choosing threads to operate on based on the
  internal M data structures, ensuring that our M has an active G.

This commit partially fixes #23 and #24, however there are still some
random hangs that happen and need to be ironed out.
 2014-11-24 17:57:52 -06:00
Derek Parker
c4eadc386b Cleanup stopTheWorld arity 2014-11-23 10:44:28 -06:00
Derek Parker
8be3ffc774 Refactor: wrap syscall.Wait4 
Wrap syscall.Wait4 and cleanup a few coordination issues.

There are still some issues here where background threads are left
sleeping. This could potentially cause weird issues. There are a few
more things I have planned to cleanup thread coordination issues.
 2014-11-22 18:57:26 -06:00
Derek Parker
582833a125 minor cleanup 2014-11-21 17:10:13 -06:00
Derek Parker
32fdfd8a2d lower timeout wait 2014-11-21 17:02:43 -06:00
Derek Parker
aa4f08e18f check tgkill error 2014-11-21 17:01:14 -06:00
Derek Parker
fe24276b15 Use correct tgid for kill in timeoutWait 2014-11-21 15:44:08 -06:00
Derek Parker
6fd1fbabad Cleanup trapWait, include TODO for timeoutWait fix 2014-11-20 17:15:42 -06:00
Michael Gehring
6d32a94cd7 Set stderr on launched processes 2014-11-14 13:52:21 -06:00
Derek Parker
29d0cd0bde Cleanup ignored waitstatus 2014-11-13 19:08:20 -06:00
Michael Gehring
425117a3d6 Stop target process immediately after execve. 2014-11-13 18:52:13 -06:00
Derek Parker
03b5e30bfb Seek reader for finding goroutine info 2014-11-13 08:36:20 -06:00
Michael Gehring
2f91684e7a Don't panic in threads if there is no info for pc 2014-11-12 17:28:28 -06:00
Derek Parker
dcf9f04d45 Improve variable evaluation scope 
Properly scope variable evaluation to the function the traced process is
currently stopped in.
 2014-11-10 21:26:13 -06:00
Derek Parker
505ae44828 cleanup 2014-11-10 07:04:05 -06:00
Derek Parker
cb5785324d Acknowledge runtime.breakpoint 2014-11-09 18:25:42 -06:00
Derek Parker
7d69c16512 Add command to print all goroutines info 2014-11-09 12:56:21 -06:00
Derek Parker
d2ebf4dc83 Add some documentation 2014-11-08 07:30:22 -06:00
Derek Parker
665ff49181 Add command to print every thread status 2014-11-07 23:55:25 -06:00
Derek Parker
6b2ee09163 Improve overall thread coordination 2014-11-07 23:45:54 -06:00
Derek Parker
4483b17bd6 Synchronize threads better when breakpoint is hit 2014-11-02 12:49:21 -06:00
Derek Parker
f26839d078 Refactor: cleanup path through addThread 2014-10-27 18:10:45 -05:00
Derek Parker
256b386136 Cleanup AttachThread 2014-10-27 17:55:55 -05:00
Derek Parker
f280ba2a3b minor syntax cleanup 2014-10-27 17:50:47 -05:00
Derek Parker
54788de89b remove silly function 2014-10-27 17:50:19 -05:00
Derek Parker
27a042eab5 cleanup wait function 2014-10-27 17:47:43 -05:00
Derek Parker
d30a104177 cleanup extra newline 2014-10-27 07:33:19 -05:00
Derek Parker
f1ceba0909 Support 32 bit floats 2014-10-26 12:44:26 -05:00
Derek Parker
6af32b40e6 cleanup go vet errors 2014-10-25 12:44:35 -05:00
Derek Parker
0a12910bc2 Remove unused function 2014-10-25 12:44:35 -05:00
Derek Parker
053c5535ba Small code cleanup 2014-10-25 12:26:02 -05:00
Derek Parker
7a2362310e Update documentation 2014-10-25 11:13:02 -05:00
Derek Parker
a3700a4407 Improve support for int variable evaluation 2014-10-25 11:07:12 -05:00
Derek Parker
08aec0d59c Move variable related code to own file 2014-10-25 10:48:14 -05:00
Derek Parker
c625f09a17 Promote breakpoints back up to process 2014-10-25 09:17:05 -05:00
Derek Parker
4c95bf7302 (Mostly) working multithreaded tracing implementation 
Areas that need improving:

* Code cleanup
* Promote breakpoints back out of thread context
* Fix potential bug in "Next" implementation, when thread contexts
  switch
 2014-10-25 08:59:22 -05:00
Derek Parker
099efeeb9d Allow evaluation of function params 2014-10-17 14:14:55 -05:00
Derek Parker
5331dad93d Rename project 2014-10-15 09:28:22 -05:00
Derek Parker
6b80a726af Remove DWARF .debug_line parser / util funcs 2014-10-15 08:31:01 -05:00
Derek Parker
fa0092ac74 Rename helper dir 2014-10-14 09:53:10 -05:00
Derek Parker
1760022895 Refactor Next implementation 2014-10-14 09:52:16 -05:00
Derek Parker
58c1f54578 Improve Next implementation 
Fix bug involving detecting whether or not we have stepped into another
function when we plan on return from the function we are currently in.
 2014-10-13 19:04:38 -05:00
Derek Parker
be7f34ee0c Cleanup: Return err directly if cannot set breakpoint 2014-10-13 08:56:42 -05:00
Derek Parker
248766300d Remove silly function 2014-10-13 08:27:25 -05:00
Derek Parker
dc8c9cc2a4 Optimize Next implementation 
Once the program detects that we have stepped into another function,
we simply calculate the return address and then set a breakpoint and
continue to that location, avoiding numerous syscalls.
 2014-10-13 08:24:59 -05:00
Derek Parker
09e352bdf7 Refactor: Move Cover method to FDE 2014-10-11 00:52:05 -05:00
Derek Parker
dfacf0770d Fix wrong location bug for Next impl 2014-10-10 21:00:07 -05:00
Derek Parker
8457f5c7df Cleanup test 2014-10-10 13:52:13 -05:00
Derek Parker
5da86a3e31 cleanup 2014-10-09 17:15:10 -05:00
Derek Parker
6a71009954 Fix Next impl 
Needs some refactoring and some optimization, but fixes several bugs.
 2014-10-09 14:19:10 -05:00
Derek Parker
10a1447ae1 Implement support for pointers to structs 2014-10-07 16:22:26 -05:00
Derek Parker
f0e0d0b8fd Implement support for struct evaluation 2014-10-07 14:32:22 -05:00
Derek Parker
6562b2e531 Do not os.Exit(0) in test 2014-10-07 14:03:44 -05:00
Derek Parker
c9cbaea291 Optimize Next implementation 
Now that I'm using the step strategy, I put in an optimization where if
stepping into another function, simply find the return address, put a
breakpoint there, and then continue.
 2014-10-07 13:57:03 -05:00
Derek Parker
2231c0e7f3 Add reminder for "Next" optimization 2014-10-07 10:33:13 -05:00
Derek Parker
6363ce106a Add comments for PC reset code 2014-10-07 07:58:21 -05:00
Derek Parker
5c301dd9b1 Improve 'in current fn' check for Next impl 2014-10-07 07:57:11 -05:00
Derek Parker
a69c2dc994 Cleanup test 2014-10-05 10:53:13 -05:00
Derek Parker
2ce7352aa4 Simplify temp breakpoint cleanup 2014-10-04 18:13:20 -05:00
Derek Parker
f8a65c41c5 Improve next impl -- needs refactoring 2014-10-04 00:52:40 -05:00
Derek Parker
a712a86074 cleanup formatting 2014-09-30 08:49:30 -05:00
Derek Parker
fad8104160 Reorganize code a bit 2014-09-25 17:20:09 -05:00
Derek Parker
b88d73c6f6 Remove dwarf info text file 2014-09-22 18:34:52 -05:00
Derek Parker
342af24117 Remove superous binary 2014-09-22 18:34:16 -05:00
Derek Parker
ea087ba1b1 Modify fixture prog 2014-09-19 19:58:16 -05:00
Derek Parker
e83e39b158 Fix potential suite hang 2014-09-19 16:01:39 -05:00
Derek Parker
8ee9525f47 Ensure temp breakpoints are cleared after next 2014-09-18 22:28:21 -05:00
Derek Parker
f1e5a70a4b Update for Go 1.3.1 
I decided to vendor all debug/dwarf and debug/elf files so that the
project can be go get-table. All changes that I am waiting to land in Go
1.4 are now captured in /vendor/debug/*.
 2014-09-13 12:28:46 -05:00
Derek Parker
aefbd8f35a Use consistent fatal test messages 2014-09-06 18:56:25 -05:00
Derek Parker
42c98577d8 Use test assertion helper 2014-09-06 18:53:22 -05:00
Derek Parker
26b9878513 Remove superfluous break in Next implementation 2014-09-05 16:16:55 -05:00
Derek Parker
50951ba257 Do not export nextPotentialLocations 2014-09-05 14:52:45 -05:00
Derek Parker
6aec8333eb Move things around because aesthetics 2014-09-05 14:38:43 -05:00
Derek Parker
f5df7ea14d Fix: error should not use nil val 2014-09-05 14:20:12 -05:00
Derek Parker
39569a14ac Refactor Next implementation 2014-09-05 14:19:03 -05:00
Derek Parker
232d3d7446 Prefer "new" for initialization 2014-09-01 10:39:04 -05:00
Derek Parker
9b415c7546 Remove test binaries 2014-08-27 17:56:23 -05:00
Derek Parker
a847f4fd9d Don't rely on process.Wait(), instead use syscall 2014-08-27 17:47:04 -05:00
Derek Parker
fe79437656 Organize types / methods a bit 2014-08-15 15:43:14 -05:00
Derek Parker
0e11797f8b Reduce nesting 2014-08-14 18:00:48 -05:00
Derek Parker
54e15f9d06 Don't assume availability of .gosymtab / .gopclntab 2014-08-07 17:57:58 -05:00
Derek Parker
0af47b64ce Use external red/black tree package 2014-08-07 11:03:42 -05:00
Derek Parker
d977810626 Parallelize initial parsing operations 2014-08-06 11:14:23 -05:00
Derek Parker
d676be1810 Use t.StructName for switch param 2014-08-06 09:50:15 -05:00
Derek Parker
c22b6a8aea Remove leftover printf 2014-08-05 19:02:44 -05:00