Commit Graph

9 Commits

Author SHA1 Message Date
Alessandro Arzilli
d925f6b719
proc,service: allow printing registers for arbitrary frames (#1875)
Adds an optional scope prefix to the `regs` command which allows
printing registers for any stack frame (as long as they were somehow
saved). Issue #1838 is not yet to be closed since we are still not
recovering the registers of a segfaulting frame.

Updates #1838
2020-02-24 10:47:02 -08:00
chainhelen
a5d9dbee79
pkg,service: add cmd examinemem(x) for examining memory. (#1814)
According to #1800 #1584 #1038, `dlv` should enable the user to dive into
memory. User can print binary data in specific memory address range.
But not support for sepecific variable name or structures temporarily.(Because
I have no idea that modify `print` command.)

Close #1584.
2020-02-13 09:29:21 -08:00
aarzilli
a8606afb0b proc,service: return build informations for each package
Adds an API call that returns a list of packages contained in the
program and the files that were used to build them, and also a best
guess at which filesystem directory contained the package when it was
built.

This can be used by IDEs to map file paths if the debugging environment
doesn't match the build environment exactly.
2020-01-09 20:19:02 +01:00
Alessandro Arzilli
1c96680c6b Documentation: add another starlark example script (#1731)
This script re-runs a program until it fails or hits a breakpoint, it
is useful for debugging non-deterministic problems when used in
conjunction with rr.
2019-10-25 09:59:52 -07:00
Alessandro Arzilli
ccf57b9454 terminal: let 'list' work on file:line exprs that don't map to code (#1728)
Make the 'list' command succeed for file:line expressions that don't
map to any instruction.
Adds an argument to the FindLocations API call that makes FindLocations
return if the expression can be parsed, even if it doesn't end up
matching any instruction in debug_line.
2019-10-25 09:59:18 -07:00
Alessandro Arzilli
6b20e880e2 *: add option to re-record recorded targets (#1702)
Adds a '-r' option to the 'restart' command (and to the Restart API)
that re-records the target when using rr.

Also moves the code to delete the trace directory inside the gdbserial
package.
2019-10-21 11:48:04 -07:00
Alessandro Arzilli
6239f956a3 Documentation: add new example to starlark documentation (#1716) 2019-10-21 10:43:44 -07:00
Alessandro Arzilli
efd628616b proc: add options to bypass smart stacktraces (#1686)
Add options to start a stacktrace from the values saved in the
runtime.g struct as well as a way to disable the stackSwitch logic and
just get a normal stacktrace.
2019-09-25 10:21:20 -07:00
Alessandro Arzilli
ed35dce7a3 terminal: adds embedded scripting language (#1466)
If the argument of 'source' ends in '.star' it will be interpreted as a
starlark script.
If the argument of 'source' is '-' an interactive starlark repl will be
started.

For documentation on how the starlark execution environment works see
Documentation/cli/starlark.md.

The starlark API is autogenerated from the JSON-RPC API by
script/gen-starlark-bindings.go.
In general for each JSON-RPC API a single global starlark function is
created.
When one of those functions is called (through a starlark script) the
arguments are converted to go structs using reflection. See
unmarshalStarlarkValue in pkg/terminal/starbind/conv.go.
If there are no type conversion errors the JSON-RPC call is executed.
The return value of the JSON-RPC call is converted back into a starlark
value by interfaceToStarlarkValue (same file):

* primitive types (such as integers, floats or strings) are converted
  by creating the corresponding starlark value.
* compound types (such as structs and slices) are converted by wrapping
  their reflect.Value object into a type that implements the relevant
  starlark interfaces.
* api.Variables are treated specially so that their Value field can be
  of the proper type instead of always being a string.

Implements #1415, #1443
2019-07-02 10:55:27 -07:00