Commit Graph

148 Commits

Author SHA1 Message Date
Alessandro Arzilli
fc0d40144a proc/variables: fix infinite recursion with pointer loop (#725)
loadValue didn't react correctly to pointer loops going through
slice -> interface{} -> slice or pointer -> interface{} -> pointer.
2017-02-09 16:26:38 -08:00
Derek Parker
53f0d24057 Move top-level packages into pkg 2017-02-08 12:17:19 -08:00
Derek Parker
26ad5f1d82 Introduce target interface 2017-02-08 12:16:51 -08:00
Alessandro Arzilli
e77595ce31 Improve stacktraces (#721)
* service/rpccommon: fixed typo

* proc: test parseG while target is in runtime.deferreturn

runtime.deferreturn will change the value of curg._defer.fn in such a
way that if the target is stopped at just the right instruction it
may crash an incorrect implementation of parseG

* proc/stack: handle stack barriers correctly

Correctly handle stack barriers insterted during garbage collection.
2017-02-08 14:14:57 +01:00
Alessandro Arzilli
8c96e275d0 proc: Make sure CurrentLoc of G returned by GetG is up to date (#723)
We are already doing this in GoroutinesInfo we should be doing it for
GetG. The main consequence of not doing this is that the CurrentLoc of
DebuggerState.SelectedGoroutine is out of date compared to the location
of the thread running it.
2017-02-07 13:44:36 -08:00
Alessandro Arzilli
8724b3fce7 Go 1.8 compatibility (part 2) (#667)
* dwarf/line: bugfix: not all values of the state machine can be used

According to DWARF Version 3 Section 6.2 "Line Number Information" not
all the values transversed by the line numbers state machine are valid
instructions, only the ones after a "special opcode", after the
standard opcode DW_LNS_copy and the extended opcode
DW_LINE_end_sequence.

DWARF3 describes this by specifying that only the opcodes listed above
"append a row to the matrix".

Additionally the implementation of DW_LNS_const_add_pc was wrong.

Fixes #664

* dwarf/line: fixed test failing with go1.8

* service/test: fix prologue detection tests

The conditions about which function prologue is emitted by the compiler
changed in go1.8, changed the test program so that callme2 will still
have a prologue under go1.8.

* service/test: fix step test

compilation units are linked in a different order under go1.8 so the
code of 'fmt' is no longer located after 'main' in the executable,
changed the tests so that they don't rely on this assumption anymore.

* proc: change runtime.Breakpoint support for go1.8

Before 1.8 it was sufficient to step twice to exit a
runtime.Breakpoint(), but go 1.8 added frame pointer tracking to small
functions making runtime.Breakpoint longer.
This changes runtime.Breakpoint handling in Continue to single step as
many times as are needed to exit runtime.Breakpoint.

* proc/test: fix TestIssue561 for go1.8
2017-02-07 13:07:18 -08:00
Alessandro Arzilli
d89d115ef9 proc/variables: support NaN/Inf float values (#706)
Unfortunately go/constant does not support NaN and Inf float values so
we need to store this information alongside.

Fixes #705
2017-01-20 14:22:36 -08:00
Alessandro Arzilli
1afcc6c189 Fix for #614 and #683 (#687)
* service: Prevent panics from crashing delve and killing the target

Catch all unrecovered proc and debugger panics in the service layer and
report them as errors, allow users to cleanly detach from the target
and quit.

Fixes #614

* proc: Next/Step should not panic if line info can not be found.

Fixes #683
2017-01-09 15:21:54 -08:00
Alessandro Arzilli
4dd627f669 service/debugger: bugfix: error values can not be marshalled (#697) 2017-01-09 15:19:42 -08:00
Alessandro Arzilli
464d6c2783 terminal: fixed typo. (#694)
* terminal: fixed typo.

* debugger: bugfix: when restaring use new process to FindFileLocation
2017-01-05 11:13:07 -08:00
Alessandro Arzilli
f4aaffbbf3 Two bugfixes regarding stale executable files, and executables changing between restarts (#689)
* service/debugger: Restore breakpoints using file:line on restart

Restoring by address can cause the breakpoint to be inserted in the
middle of an instruction if the executable file has changed.

* terminal: Warn of stale executable when printing source
2016-12-22 10:53:34 -06:00
aarzilli
8f0646e426 proc: load more registers
Adds ability to load x87, SSE and AVX registers.

Fixes #666
2016-12-19 21:29:45 +01:00
Evgeny L
4064d6acc0 Flag to set working directory (#650)
* proc: Add `wd` to Launch

This change adds the `wd` arg which specify working directory of the
program.

Fixes #295

* service/debugger: Add `Wd` field to debugger.Config

This change adds the `Wd` field which specify working directory of the
program launched by debugger.

Fixes #295

* service: Add `Wd` to service.Config

This change adds the `Wd` field which specify working directory of the
program debugger will launch.

Fixes #295

* cmd/dlv: Add `Wd` flag

This change adds `Wd` flag which specify working directory of the
program which launched by debugger.

Fixes #295

* only set the Linux working directory if it is set,
stub out param in darwin and windows

* set working directory for Windows
https://godoc.org/golang.org/x/sys/windows#CreateProcess
https://msdn.microsoft.com/en-us/library/windows/desktop/ms682425(v=vs.85).aspx

* Windows workingDir must be an *uint16

* attempt to chdir on darwin via @yuntan

* proc/exec_darwin.c: fix working directory for darwin

* Add tests to check if working directory works.
* Fix darwin implementation of fork/exec, which paniced if
  child fork returned.

* cmd, service: rename Wd to WorkingDir
2016-11-01 12:58:42 -07:00
aarzilli
f62bf8d1e3 proc: Names of concrete types of interfaces parsing their runtime._type
Generate names of the concrete types stored inside interface variables
by fully parsing their runtime._type instead of simply using the str
field.

This allows delve to read the contents of an interface variable when
the program imports multiple packages that have the same name. It also
allows delve to correctly interpret some complex anonymous types.

Fixes #455
2016-10-27 09:56:15 +02:00
aarzilli
0f4b5150c3 proc, terminal: stepout command
Command to step out of the currently executing function.

Implements #358
2016-10-23 17:09:26 +02:00
Alessandro Arzilli
54d3eab63a prettyprint: Print type of the elements of arrays of interface type (#591) 2016-10-21 22:14:43 -07:00
Alessandro Arzilli
6e882c50fa debugger/locations: prioritize exact matches of function names (#651)
If the location specification matches the name of a function exactly
return that function as a match event if the expression matches other
functions as well.

Without this some functions, like math/rand.Intn are unmatchable.
2016-10-21 22:04:03 -07:00
aarzilli
9cbe768836 proc: Renamed temp breakpoints to internal breakpoints 2016-09-30 08:35:29 +02:00
aarzilli
7c49d4968d proc: Implement Step using Continue
Instead of repeatedly calling StepInstruction set breakpoints to the
destination of CALL instructions (or on the CALL instructions
themselves for indirect CALLs), then call Continue.
Calls to unexported runtime functions are skipped.
Reduces the number of code paths managing inferior state from 3 to 2
(StepInstruction, Continue).

Fixes #561
2016-09-27 09:37:33 +02:00
Alessandro Arzilli
f2c1789c64 Changed TestIssue426 to work with go 1.8 (#627)
go1.8 changed the way anonymous struct names are generated for DWARF.
2016-09-06 10:26:56 -07:00
Alessandro Arzilli
142d882799 debugger/locations: Fixed bug parsing remote package paths (#586) 2016-07-05 12:13:21 -07:00
Alessandro Arzilli
372869c9e1 proc: Back to using vendored golang.org/x/debug/ (#585)
Patch https://go-review.googlesource.com/23085 has been merged so we
can go back to using golang.org/x/debug/.
2016-07-05 11:58:11 -07:00
aarzilli
80336e57e0 Replaced net/rpc with custom version
This version preserves the order of requests, allows the
client to switch between API versions and introduces a
way to send notifications to the client (see TODO item at:
proc/proc_linux.go:325).

Fixes #523, #571
2016-07-02 12:16:06 +02:00
aarzilli
51c39ed171 proc: detect when Launching non-executable files
This provides a better error message when the user tries to run dlv
debug on a directory that does not contain a main package, when `dlv
exec` is used with a source file.

Additionally the architecture of the executable is checked as suggested
by @alexbrainman in #443.

Fixes #509
2016-06-30 09:39:18 +02:00
aarzilli
323c0450d1 tests: fixed version check for go1.7 to include beta versions 2016-06-22 12:38:40 +02:00
Alessandro Arzilli
7761faad5b terminal: show current thread of goroutines (#564) 2016-06-20 10:20:44 -07:00
Derek Parker
0fded288b5 all: Fix typos 2016-05-29 22:13:52 +02:00
Alessandro Arzilli
9bc6ad4f46 Go 1.7 compatibility (#524)
* tests: update to cope with go1.7 SSA compiler

* de-vendored golang.org/x/debug/dwarf

We need our own tweaked version

* dwarf/debug/dwarf: always use the entry's name attribute

Using the name attribute leads to better type names as well as fixes
inconsistencies between 1.5, 1.6 and 1.7.

* proc: Updated loadInterface to work with go1.7

go1.7 changed the internal representation of types, removing the string
field from runtime._type.
Updated loadInterface to use the new str field.
2016-05-29 12:20:09 -07:00
aarzilli
a1ac17f16c service/test: Added test for issue #528
This issue is fixed by go 1.7, the test will only run on newer versions
of the compiler.
2016-05-18 09:07:19 +02:00
Alessandro Arzilli
c4e01da5ca terminal,service: auto-continue during next and step (#448)
* proc: bugfix: StepInto can not function when temp bps exist

* terminal,service: auto-continue during next and step

Make dlv call continue automatically when a breakpoint is hit on a
different goroutine during a next or step operation.
Added API hooks to implement the other solution to this problem (cancel
the next/step operation if a different breakpoint is hit).

Fixes #387
2016-04-24 16:20:02 -07:00
Alessandro Arzilli
a7a0cc75e1 proc: allow use of quoted type names in type casts (#434)
If we are unable to correctly guess how a type is serialized in
debug_info let the user specify it directly.

Workaround for #455
2016-04-24 16:14:42 -07:00
Alessandro Arzilli
7820921b7e service: Make Halt work during tracing (#469)
While tracing delve may spend most of its time outside of
proc.(*Process).Continue, which renders
service/rpc/client.(*Client).Halt ineffective.
This commit changes the implementation of
service/rpc/client.(*Client).Halt to make it capable of stopping traces.
2016-04-24 10:30:43 -07:00
Alessandro Arzilli
f7cb6053d2 documentation: API documentation improvements (#507)
* documentation: headless invocation should specify --api-version=2

* documentation: More API documentation

* documentation: copied documentation from client.go to rpc2/server.go

Fixes #164
2016-04-24 10:18:02 -07:00
Alessandro Arzilli
473b66387c proc: Improvements to Variable printing (#444)
* service/api: Removed unused fields of service/api.Function

* proc/eval: Set return variable name to input expression

* all: fine-grained control of loadValue for better variable printing

Makes proc.(*Variable).loadValue loading parameters configurable
through one extra argument of type LoadConfig.
This interface is also exposed through the API so clients can control
how much of a variable delve should read.
2016-04-24 10:15:39 -07:00
Alessandro Arzilli
af4798e2a9 service,terminal: APIv2 plus method to select API version (#460)
New API version with better backwards compatibility plus mechanism to
select the API version that a headless instance should use.

Adds service/test/cmd/typecheckrpc.go to type check the RPC interface.
2016-04-18 12:20:20 -07:00
aarzilli
497b526194 proc: stacktrace refactoring
- made GoroutineStacktrace a method of struct G
- made stacktrace a method of StackIterator
- renamed StackIterator to stackIterator
- factored out logic to obtain a stackIterator from a goroutine that's
used by both (*G).Stacktrace and by (*G).UserCurrent
2016-03-28 09:01:16 -07:00
aarzilli
59beb7b442 debugger: Allow disassembly even if the scope can not be converted
It is sometimes impossible to convert an EvalScope immediately after
starting the program but disassembly can still proceed.
2016-03-28 08:44:18 -07:00
Hubert Krauze
37f124817d dlv: Misc refactors 2016-03-17 15:32:30 -07:00
aarzilli
c4797ea445 proc: Breakpoint to catch unrecovered panics
Automatically sets a breakpoint on runtime.startpanic, the function
that gets called by runtime.dopanic when a panic is not recovered.

Implements #317
2016-03-09 14:15:30 +01:00
aarzilli
49a0a121e0 tests: Add test for #149, fixed TestNextGeneral on tip
The go compiler changed and break statements no longer get compiled to
nothing when -N is passed:

https://go-review.googlesource.com/#/c/19848/
https://go-review.googlesource.com/#/c/19854/
2016-02-28 16:44:22 -08:00
aarzilli
ecc95cd2ac debugger: bugfix: BreakpointInfo variables evaluated on wrong thread
BreakpointInfo variables were always evaluated on CurrentThread
instead of the thread that triggered the breakpoint.
2016-02-28 13:38:05 +01:00
Derek Parker
b3c1ca5384 service/test: Improve TypesCommand filter assetion 2016-02-27 15:50:37 -08:00
aarzilli
c8f4cee97d New command 'types'
Lists all the types defined in the debugged program.
2016-02-27 15:39:11 -08:00
Derek Parker
1efc4940cd service/debugger: Fix typo 2016-02-24 17:50:11 -08:00
aarzilli
82ef3cce78 debugger: bugfix: make delve API thread safe
proc.(*Process) methods are not thread safe, multiple clients
connecting simultaneously to a delve server (Issue #383) or a even
a single over-eager client (Issue #408) can easily crash it.
Additionally (Issue #419) calls to client.(*RPCClient).Halt can
crash the server because they can result in calling the function
debug/dwarf.(*Data).Type simultaneously in multiple threads which
will cause it to return incompletely parsed dwarf.Type values.

Fixes #408, #419 (partial)
2016-02-24 17:49:30 -08:00
aarzilli
6242c4388e _fixtures: Removed testvariables2 and testvariables4
Moved the code in testvariables2 and testvariables4 into
testvariables3, renamed testvariables3 into testvariables2
2016-02-18 12:16:31 -08:00
aarzilli
4116d66c8d proc: Replaced FunctionEntryToFirstLine with disassembly alternative
- Unlike FunctionEntryToFirstLine can skip the prologue on functions
that are defined on a single line, either because they weren't
formatted or because they were autogenerated
- Can skip the prologue on most functions when setting a breakpoint
with the filename:line syntax

Fixes #396
2016-02-18 09:11:34 -08:00
aarzilli
c277b27157 cmd/dlv: add flag to make headless server accept multiple clients 2016-02-17 20:09:50 +01:00
aarzilli
3be65a4c1f service, terminal: Named breakpoints and breakpoint conditions
Implements #109 and #120
2016-02-16 15:59:37 -08:00
aarzilli
e7a9a3ea9a Disassemble command
Implements #368
2016-02-11 16:59:07 -08:00