binutils-gdb/gdb/testsuite/gdb.compile/compile-cplus-method.cc

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C++ compile support 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.
2018-08-30 06:12:24 +08:00
/* Copyright 2015-2018 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
class A;
static int get_value (const A* a);
class A
{
public:
typedef int ATYPE;
A () : a_ (21) {}
ATYPE get_var () { return a_; }
ATYPE get_var (unsigned long a) { return 100; }
ATYPE get_var (ATYPE a) { return 101; }
ATYPE get_var (float a) { return 102; }
ATYPE get_var (void *a) { return 103;}
ATYPE get_var (A& lr) { return 104; }
ATYPE get_var (A const& lr) { return 105; }
ATYPE get_var1 (int n) { return a_ << n; }
ATYPE get_var2 (int incr, unsigned n) { return (a_ + incr) << n; }
static ATYPE get_1 (int a) { return a + 1; }
static ATYPE get_2 (int a, int b) { return a + b + 2; }
friend ATYPE get_value (const A*);
private:
ATYPE a_;
};
static A::ATYPE
get_value (A::ATYPE a)
{
return a;
}
static A::ATYPE
get_value (const A* a)
{
return a->a_;
}
static A::ATYPE
get_value ()
{
return 200;
}
typedef int (A::*PMF) (A::ATYPE);
int
main ()
{
A *a = new A ();
int var = 1234;
float f = 1.23;
unsigned long ul = 0xdeadbeef;
A const* ac = a;
PMF pmf = &A::get_var;
PMF *pmf_p = &pmf;
var -= a->get_var (); // break here
var -= a->get_var (1);
var -= a->get_var (ul);
var -= a->get_var (f);
var -= a->get_var (a);
var -= a->get_var (*a);
var -= a->get_var (*ac);
var -= a->get_var1 (1);
var -= a->get_var2 (1, 2);
var += (a->*pmf) (1);
var -= (a->**pmf_p) (1);
return var - A::get_1 (1) + A::get_2 (1, 2) + get_value ()
+ get_value (get_value ()) + get_value (a);
}