binutils-gdb/gdb/compile/gcc-cp-plugin.h

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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
/* GCC C++ plug-in wrapper for GDB.
Copyright (C) 2018 Free Software Foundation, Inc.
This file is part of GDB.
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/>. */
/* A class representing the GCC C++ plug-in. */
#include "gcc-cp-interface.h"
class gcc_cp_plugin
{
public:
explicit gcc_cp_plugin (struct gcc_cp_context *gcc_cp)
: m_context (gcc_cp)
{
}
/* Set the oracle callbacks to be used by the compiler plug-in. */
void set_callbacks (gcc_cp_oracle_function *binding_oracle,
gcc_cp_symbol_address_function *address_oracle,
gcc_cp_enter_leave_user_expr_scope_function *enter_scope,
gcc_cp_enter_leave_user_expr_scope_function *leave_scope,
void *datum)
{
m_context->cp_ops->set_callbacks (m_context, binding_oracle,
address_oracle, enter_scope, leave_scope,
datum);
}
/* Returns the interface version of the compiler plug-in. */
int version () const { return m_context->cp_ops->cp_version; }
#define GCC_METHOD0(R, N) R N () const;
#define GCC_METHOD1(R, N, A) R N (A) const;
#define GCC_METHOD2(R, N, A, B) R N (A, B) const;
#define GCC_METHOD3(R, N, A, B, C) R N (A, B, C) const;
#define GCC_METHOD4(R, N, A, B, C, D) R N (A, B, C, D) const;
#define GCC_METHOD5(R, N, A, B, C, D, E) R N (A, B, C, D, E) const;
#define GCC_METHOD7(R, N, A, B, C, D, E, F, G) R N (A, B, C, D, E, F, G) const;
#include "gcc-cp-fe.def"
#undef GCC_METHOD0
#undef GCC_METHOD1
#undef GCC_METHOD2
#undef GCC_METHOD3
#undef GCC_METHOD4
#undef GCC_METHOD5
#undef GCC_METHOD7
/* Special overloads of plug-in methods with added debugging information. */
gcc_expr build_decl (const char *debug_decltype, const char *name,
enum gcc_cp_symbol_kind sym_kind, gcc_type sym_type,
const char *substitution_name, gcc_address address,
const char *filename, unsigned int line_number);
gcc_type start_class_type (const char *debug_name, gcc_decl typedecl,
const struct gcc_vbase_array *base_classes,
const char *filename, unsigned int line_number);
int finish_class_type (const char *debug_name, unsigned long size_in_bytes);
int pop_binding_level (const char *debug_name);
private:
/* The GCC C++ context. */
struct gcc_cp_context *m_context;
};