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078a020797
This patch adds *basic* support for C++ to the compile feature. It does
most simple type conversions, including everything that C compile does and
your basic "with-classes" type of C++.
I've written a new compile-support.exp support file which adds a new test
facility for automating and simplifying "compile print" vs "compile code"
testing. See testsuite/lib/compile-support.exp and CompileExpression
for more on that. The tests use this facility extensively.
This initial support has several glaring omissions:
- No template support at all
I have follow-on patches for this, but they add much complexity
to this "basic" support. Consequently, they will be submitted separately.
- Cannot print functions
The code template needs tweaking, and I simply haven't gotten to it yet.
- So-called "special function" support is not included
Using constructors, destructors, operators, etc will not work. I have
follow-on patches for that, but they require some work because of the
recent churn in symbol searching.
- There are several test suite references to "compile/1234" bugs.
I will file bugs and update the test suite's bug references before pushing
these patches.
The test suite started as a copy of the original C-language support, but
I have written tests to exercise the basic functionality of the plug-in.
I've added a new option for outputting debug messages for C++ type-conversion
("debug compile-cplus-types").
gdb/ChangeLog:
* Makefile.in (SUBDIR_GCC_COMPILE_SRCS): Add compile-cplus-symbols.c
and compile-cplus-types.c.
(HFILES_NO_SRCDIR): Add gcc-cp-plugin.h.
* c-lang.c (cplus_language_defn): Set C++ compile functions.
* c-lang.h (cplus_get_compile_context, cplus_compute_program):
Declare.
* compile/compile-c-support.c: Include compile-cplus.h.
(load_libcompile): Templatize.
(get_compile_context): "New" function.
(c_get_compile_context): Use get_compile_context.
(cplus_get_compile_context): New function.
(cplus_push_user_expression, cplus_pop_user_expression)
(cplus_add_code_header, cplus_add_input, cplus_compile_program)
(cplus_compute_program): Define new structs/functions.
* compile/compile-cplus-symmbols.c: New file.
* compile/compile-cplus-types.c: New file.
* compile/compile-cplus.h: New file.
* compile/compile-internal.h (debug_compile_oracle, GCC_TYPE_NONE):
Declare.
* compile/compile-object-load.c (get_out_value_type): Use
strncmp_iw when comparing symbol names.
(compile_object_load): Add mst_bss and mst_data.
* compile/compile.c (_initialize_compile): Remove
-Wno-implicit-function-declaration from `compile_args'.
* compile/gcc-cp-plugin.h: New file.
* NEWS: Mention C++ compile support and new debug options.
gdb/testsuite/ChangeLog:
* gdb.compile/compile-cplus-anonymous.cc: New file.
* gdb.compile/compile-cplus-anonymous.exp: New file.
* gdb.compile/compile-cplus-array-decay.cc: New file.
* gdb.compile/compile-cplus-array-decay.exp: New file.
* gdb.compile/compile-cplus-inherit.cc: New file.
* gdb.compile/compile-cplus-inherit.exp: New file.
* gdb.compile/compile-cplus-member.cc: New file.
* gdb.compile/compile-cplus-member.exp: New file.
* gdb.compile/compile-cplus-method.cc: New file.
* gdb.compile/compile-cplus-method.exp: New file.
* gdb.compile/compile-cplus-mod.c: "New" file.
* gdb.compile/compile-cplus-namespace.cc: New file.
* gdb.compile/compile-cplus-namespace.exp: New file.
* gdb.compile/compile-cplus-nested.cc: New file.
* gdb.compile/compile-cplus-nested.exp: New file.
* gdb.compile/compile-cplus-print.c: "New" file.
* gdb.compile/compile-cplus-print.exp: "New" file.
* gdb.compile/compile-cplus-virtual.cc: New file.
* gdb.compile/compile-cplus-virtual.exp: New file.
* gdb.compile/compile-cplus.c: "New" file.
* gdb.compile/compile-cplus.exp: "New" file.
* lib/compile-support.exp: New file.
doc/ChangeLog:
* gdb.texinfo (Compiling and injecting code in GDB): Document
set/show "compile-oracle" and "compile-cplus-types" commands.
92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
/* Copyright 2015-2018 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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class A;
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static int get_value (const A* a);
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class A
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{
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public:
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typedef int ATYPE;
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A () : a_ (21) {}
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ATYPE get_var () { return a_; }
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ATYPE get_var (unsigned long a) { return 100; }
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ATYPE get_var (ATYPE a) { return 101; }
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ATYPE get_var (float a) { return 102; }
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ATYPE get_var (void *a) { return 103;}
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ATYPE get_var (A& lr) { return 104; }
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ATYPE get_var (A const& lr) { return 105; }
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ATYPE get_var1 (int n) { return a_ << n; }
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ATYPE get_var2 (int incr, unsigned n) { return (a_ + incr) << n; }
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static ATYPE get_1 (int a) { return a + 1; }
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static ATYPE get_2 (int a, int b) { return a + b + 2; }
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friend ATYPE get_value (const A*);
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private:
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ATYPE a_;
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};
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static A::ATYPE
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get_value (A::ATYPE a)
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{
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return a;
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}
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static A::ATYPE
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get_value (const A* a)
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{
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return a->a_;
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}
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static A::ATYPE
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get_value ()
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{
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return 200;
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}
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typedef int (A::*PMF) (A::ATYPE);
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int
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main ()
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{
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A *a = new A ();
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int var = 1234;
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float f = 1.23;
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unsigned long ul = 0xdeadbeef;
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A const* ac = a;
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PMF pmf = &A::get_var;
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PMF *pmf_p = &pmf;
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var -= a->get_var (); // break here
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var -= a->get_var (1);
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var -= a->get_var (ul);
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var -= a->get_var (f);
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var -= a->get_var (a);
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var -= a->get_var (*a);
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var -= a->get_var (*ac);
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var -= a->get_var1 (1);
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var -= a->get_var2 (1, 2);
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var += (a->*pmf) (1);
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var -= (a->**pmf_p) (1);
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return var - A::get_1 (1) + A::get_2 (1, 2) + get_value ()
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+ get_value (get_value ()) + get_value (a);
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}
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