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Sergio Durigan Junior 9c23b42ffa Convert DTrace probe interface to C++ (and perform some cleanups)
This patch converts the DTrace probe
interface (gdb/dtrace-probe.[ch]) to C++, and also performs some
cleanups that were on my TODO list for a while.

The main changes were the conversion of 'struct dtrace_probe' to 'class
dtrace_probe', and a new 'class dtrace_static_probe_ops' to replace the
use of 'dtrace_probe_ops'.  Both classes implement the virtual methods
exported by their parents, 'class probe' and 'class static_probe_ops',
respectively.  I believe it's now a bit simpler to understand the
logic behind the dtrace-probe interface.

There are several helper functions used to parse parts of a dtrace
probe, and since they are generic and don't need to know about the
probe they're working on, I decided to leave them as simple static
functions (instead of e.g. converting them to class methods).

I've also converted a few uses of "VEC" to "std::vector", which makes
the code simpler and easier to maintain.  And, as usual, some cleanups
here and there.

Even though I'm sending a series of patches, they need to be tested
and committed as a single unit, because of inter-dependencies.  But it
should be easier to review in separate logical units.

I wasn't able to test these modifications because the current test
framework for DTrace probes is not working.  See
<https://sourceware.org/bugzilla/show_bug.cgi?id=22420>.

gdb/ChangeLog:
2017-11-22  Sergio Durigan Junior  <sergiodj@redhat.com>

	* dtrace-probe.c (struct probe_ops dtrace_probe_ops): Delete.
	(struct dtrace_probe_arg) <dtrace_probe_arg>: New constructor.
	<type_str>: Convert to 'std::string'.
	<expr>: Convert to 'expression_up'.
	(dtrace_probe_arg_s): Delete type and VEC.
	(dtrace_probe_enabler_s): Likewise.
	(struct dtrace_probe): Replace by...
	(class dtrace_static_probe_ops): ...this and...
	(class dtrace_probe): ...this.
	(dtrace_probe_is_linespec): Rename to...
	(dtrace_static_probe_ops::is_linespec): ...this.  Adjust code
	to reflect change.
	(dtrace_process_dof_probe): Use 'std::vector' instead of VEC.
	Adjust code.  Create new instance of 'dtrace_probe'.
	(dtrace_build_arg_exprs): Rename to...
	(dtrace_probe::build_arg_exprs): ...this.  Adjust code to
	reflect change.
	(dtrace_get_probes): Rename to...
	(dtrace_static_probe_ops::get_probes): ...this.  Adjust code
	to reflect change.
	(dtrace_get_arg): Rename to...
	(dtrace_probe::get_arg_by_number): ...this.  Adjust code to
	reflect change.
	(dtrace_probe_is_enabled): Rename to...
	(dtrace_probe::is_enabled): ...this.  Adjust code to reflect
	change.
	(dtrace_get_probe_address): Rename to...
	(dtrace_probe::get_relocated_address): ...this.  Adjust code
	to reflect change.
	(dtrace_get_probe_argument_count): Rename to...
	(dtrace_probe::get_argument_count): ...this.  Adjust code to
	reflect change.
	(dtrace_can_evaluate_probe_arguments): Rename to...
	(dtrace_probe::can_evaluate_arguments): ...this.  Adjust code
	to reflect change.
	(dtrace_evaluate_probe_argument): Rename to...
	(dtrace_probe::evaluate_argument): ...this.  Adjust code to
	reflect change.
	(dtrace_compile_to_ax): Rename to...
	(dtrace_probe::compile_to_ax): ...this.  Adjust code to
	reflect change.
	(dtrace_probe_destroy): Delete.
	(dtrace_type_name): Rename to...
	(dtrace_static_probe_ops::type_name): ...this.  Adjust code to
	reflect change.
	(dtrace_probe::get_static_ops): New method.
	(dtrace_gen_info_probes_table_header): Rename to...
	(dtrace_static_probe_ops::gen_info_probes_table_header):
	...this.  Adjust code to reflect change.
	(dtrace_gen_info_probes_table_values): Rename to...
	(dtrace_probe::gen_info_probes_table_values): ...this.  Adjust
	code to reflect change.
	(dtrace_enable_probe): Rename to...
	(dtrace_probe::enable_probe): ...this.  Adjust code to reflect
	change.
	(dtrace_disable_probe): Rename to...
	(dtrace_probe::disable_probe): ...this.  Adjust code to reflect
	change.
	(struct probe_ops dtrace_probe_ops): Delete.
	(info_probes_dtrace_command): Call 'info_probes_for_spops'
	instead of 'info_probes_for_ops'.
	(_initialize_dtrace_probe): Use 'all_static_probe_ops' instead
	of 'all_probe_ops'.
2017-11-22 19:13:46 -05:00
bfd Automatic date update in version.in 2017-11-23 00:00:27 +00:00
binutils Add a test for PR binutils/22451 2017-11-21 13:41:51 -08:00
config
cpu
elfcpp
etc
gas Riscv ld-elf/stab failure and fake label cleanup. 2017-11-22 11:20:48 -08:00
gdb Convert DTrace probe interface to C++ (and perform some cleanups) 2017-11-22 19:13:46 -05:00
gold
gprof
include
intl
ld Stop the v850 linker from converting to other output formats whilst linking. 2017-11-21 14:15:51 +00:00
libdecnumber
libiberty
opcodes Remove Vec_Disp8 field for vgf2p8mulb for AVX flavor. 2017-11-22 17:41:04 +03:00
readline
sim
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config-ml.in
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config.rpath
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.