mirror of git://gcc.gnu.org/git/gcc.git
497 lines
15 KiB
C++
497 lines
15 KiB
C++
/* Interface between GCC C++ FE and GDB
|
|
|
|
Copyright (C) 2014-2019 Free Software Foundation, Inc.
|
|
|
|
This file is part of GCC.
|
|
|
|
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/>. */
|
|
|
|
#ifndef GCC_CP_INTERFACE_H
|
|
#define GCC_CP_INTERFACE_H
|
|
|
|
#include "gcc-interface.h"
|
|
|
|
/* This header defines the interface to the GCC API. It must be both
|
|
valid C and valid C++, because it is included by both programs. */
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Forward declaration. */
|
|
|
|
struct gcc_cp_context;
|
|
|
|
/*
|
|
* Definitions and declarations for the C++ front end.
|
|
*/
|
|
|
|
/* Defined versions of the C++ front-end API. */
|
|
|
|
enum gcc_cp_api_version
|
|
{
|
|
GCC_CP_FE_VERSION_0 = 0
|
|
};
|
|
|
|
/* Qualifiers. */
|
|
|
|
enum gcc_cp_qualifiers
|
|
{
|
|
GCC_CP_QUALIFIER_CONST = 1,
|
|
GCC_CP_QUALIFIER_VOLATILE = 2,
|
|
GCC_CP_QUALIFIER_RESTRICT = 4
|
|
};
|
|
|
|
/* Ref qualifiers. */
|
|
|
|
enum gcc_cp_ref_qualifiers {
|
|
GCC_CP_REF_QUAL_NONE = 0,
|
|
GCC_CP_REF_QUAL_LVALUE = 1,
|
|
GCC_CP_REF_QUAL_RVALUE = 2
|
|
};
|
|
|
|
/* Opaque typedef for unbound class templates. They are used for
|
|
template arguments, and defaults for template template
|
|
parameters. */
|
|
|
|
typedef unsigned long long gcc_utempl;
|
|
|
|
/* Opaque typedef for expressions. They are used for template
|
|
arguments, defaults for non-type template parameters, and defaults
|
|
for function arguments. */
|
|
|
|
typedef unsigned long long gcc_expr;
|
|
|
|
typedef enum
|
|
{ GCC_CP_TPARG_VALUE, GCC_CP_TPARG_CLASS,
|
|
GCC_CP_TPARG_TEMPL, GCC_CP_TPARG_PACK }
|
|
gcc_cp_template_arg_kind;
|
|
|
|
typedef union
|
|
{ gcc_expr value; gcc_type type; gcc_utempl templ; gcc_type pack; }
|
|
gcc_cp_template_arg;
|
|
|
|
/* An array of template arguments. */
|
|
|
|
struct gcc_cp_template_args
|
|
{
|
|
/* Number of elements. */
|
|
|
|
int n_elements;
|
|
|
|
/* kind[i] indicates what kind of template argument type[i] is. */
|
|
|
|
char /* gcc_cp_template_arg_kind */ *kinds;
|
|
|
|
/* The template arguments. */
|
|
|
|
gcc_cp_template_arg *elements;
|
|
};
|
|
|
|
/* An array of (default) function arguments. */
|
|
|
|
struct gcc_cp_function_args
|
|
{
|
|
/* Number of elements. */
|
|
|
|
int n_elements;
|
|
|
|
/* The (default) values for each argument. */
|
|
|
|
gcc_expr *elements;
|
|
};
|
|
|
|
/* This enumerates the kinds of decls that GDB can create. */
|
|
|
|
enum gcc_cp_symbol_kind
|
|
{
|
|
/* A function. */
|
|
|
|
GCC_CP_SYMBOL_FUNCTION,
|
|
|
|
/* A variable. */
|
|
|
|
GCC_CP_SYMBOL_VARIABLE,
|
|
|
|
/* A typedef, or an alias declaration (including template ones). */
|
|
|
|
GCC_CP_SYMBOL_TYPEDEF,
|
|
|
|
/* A label. */
|
|
|
|
GCC_CP_SYMBOL_LABEL,
|
|
|
|
/* A class, forward declared in build_decl (to be later defined in
|
|
start_class_definition), or, in a template parameter list scope,
|
|
a declaration of a template class, closing the parameter
|
|
list. */
|
|
|
|
GCC_CP_SYMBOL_CLASS,
|
|
|
|
/* A union, forward declared in build_decl (to be later defined in
|
|
start_class_definition). */
|
|
|
|
GCC_CP_SYMBOL_UNION,
|
|
|
|
/* An enumeration type being introduced with start_new_enum_type. */
|
|
|
|
GCC_CP_SYMBOL_ENUM,
|
|
|
|
/* A nonstatic data member being introduced with new_field. */
|
|
|
|
GCC_CP_SYMBOL_FIELD,
|
|
|
|
/* A base class in a gcc_vbase_array. */
|
|
|
|
GCC_CP_SYMBOL_BASECLASS,
|
|
|
|
/* A using declaration in new_using_decl. */
|
|
|
|
GCC_CP_SYMBOL_USING,
|
|
|
|
/* A (lambda) closure class type. In many regards this is just like
|
|
a regular class, but it's not supposed to have base classes, some
|
|
of the member functions that are usually implicitly-defined are
|
|
deleted, and it should have an operator() member function that
|
|
holds the lambda body. We can't instantiate objects of lambda
|
|
types from the snippet, but we can interact with them in such
|
|
ways as passing them to functions that take their types, and
|
|
calling their body. */
|
|
|
|
GCC_CP_SYMBOL_LAMBDA_CLOSURE,
|
|
|
|
/* Marker to check that we haven't exceeded GCC_CP_SYMBOL_MASK. */
|
|
GCC_CP_SYMBOL_END,
|
|
|
|
GCC_CP_SYMBOL_MASK = 15,
|
|
|
|
/* When defining a class member, at least one of the
|
|
GCC_CP_ACCESS_MASK bits must be set; when defining a namespace-
|
|
or union-scoped symbol, none of them must be set. */
|
|
|
|
GCC_CP_ACCESS_PRIVATE,
|
|
GCC_CP_ACCESS_PUBLIC = GCC_CP_ACCESS_PRIVATE << 1,
|
|
GCC_CP_ACCESS_MASK = (GCC_CP_ACCESS_PUBLIC
|
|
| GCC_CP_ACCESS_PRIVATE),
|
|
GCC_CP_ACCESS_PROTECTED = GCC_CP_ACCESS_MASK,
|
|
GCC_CP_ACCESS_NONE = 0,
|
|
|
|
GCC_CP_FLAG_BASE = GCC_CP_ACCESS_PRIVATE << 2,
|
|
|
|
/* Flags to be used along with GCC_CP_SYMBOL_FUNCTION: */
|
|
|
|
/* This flag should be set for constructors, destructors and
|
|
operators. */
|
|
GCC_CP_FLAG_SPECIAL_FUNCTION = GCC_CP_FLAG_BASE,
|
|
|
|
/* We intentionally cannot express inline, constexpr, or virtual
|
|
override for functions. We can't inline or constexpr-replace
|
|
without a source-level body. The override keyword is only
|
|
meaningful within the definition of the containing class. */
|
|
|
|
/* This indicates a "virtual" member function, explicitly or
|
|
implicitly (due to a virtual function with the same name and
|
|
prototype in a base class) declared as such. */
|
|
GCC_CP_FLAG_VIRTUAL_FUNCTION = GCC_CP_FLAG_BASE << 1,
|
|
|
|
/* The following two flags should only be set when the flag above is
|
|
set. */
|
|
|
|
/* This indicates a pure virtual member function, i.e., one that is
|
|
declared with "= 0", even if a body is provided in the
|
|
definition. */
|
|
GCC_CP_FLAG_PURE_VIRTUAL_FUNCTION = GCC_CP_FLAG_BASE << 2,
|
|
|
|
/* This indicates a "final" virtual member function. */
|
|
GCC_CP_FLAG_FINAL_VIRTUAL_FUNCTION = GCC_CP_FLAG_BASE << 3,
|
|
|
|
/* This indicates a special member function should have its default
|
|
implementation. This either means the function declaration
|
|
contains the "= default" tokens, or that the member function was
|
|
implicitly generated by the compiler, although the latter use is
|
|
discouraged: just let the compiler implicitly introduce it.
|
|
|
|
A member function defaulted after its first declaration has
|
|
slightly different ABI implications from one implicitly generated
|
|
or explicitly defaulted at the declaration (and definition)
|
|
point. To avoid silent (possibly harmless) violation of the one
|
|
definition rule, it is recommended that this flag not be used for
|
|
such functions, and that the address of the definition be
|
|
supplied instead. */
|
|
GCC_CP_FLAG_DEFAULTED_FUNCTION = GCC_CP_FLAG_BASE << 4,
|
|
|
|
/* This indicates a deleted member function, i.e., one that has been
|
|
defined as "= delete" at its declaration point, or one that has
|
|
been implicitly defined as deleted (with or without an explicit
|
|
"= default" definition).
|
|
|
|
This should not be used for implicitly-declared member functions
|
|
that resolve to deleted definitions, as it may affect the
|
|
implicit declaration of other member functions. */
|
|
GCC_CP_FLAG_DELETED_FUNCTION = GCC_CP_FLAG_BASE << 5,
|
|
|
|
/* This indicates a constructor or type-conversion operator declared
|
|
as "explicit". */
|
|
|
|
GCC_CP_FLAG_EXPLICIT_FUNCTION = GCC_CP_FLAG_BASE << 6,
|
|
|
|
GCC_CP_FLAG_END_FUNCTION,
|
|
GCC_CP_FLAG_MASK_FUNCTION = (((GCC_CP_FLAG_END_FUNCTION - 1) << 1)
|
|
- GCC_CP_FLAG_BASE),
|
|
|
|
/* Flags to be used along with GCC_CP_SYMBOL_VARIABLE: */
|
|
|
|
/* This indicates a variable declared as "constexpr". */
|
|
|
|
GCC_CP_FLAG_CONSTEXPR_VARIABLE = GCC_CP_FLAG_BASE,
|
|
|
|
/* This indicates a variable declared as "thread_local". ??? What
|
|
should the ADDRESS be? */
|
|
|
|
GCC_CP_FLAG_THREAD_LOCAL_VARIABLE = GCC_CP_FLAG_BASE << 1,
|
|
|
|
GCC_CP_FLAG_END_VARIABLE,
|
|
GCC_CP_FLAG_MASK_VARIABLE = (((GCC_CP_FLAG_END_VARIABLE - 1) << 1)
|
|
- GCC_CP_FLAG_BASE),
|
|
|
|
/* Flags to be used when defining nonstatic data members of classes
|
|
with new_field. */
|
|
|
|
/* Use this when no flags are present. */
|
|
GCC_CP_FLAG_FIELD_NOFLAG = 0,
|
|
|
|
/* This indicates the field is declared as mutable. */
|
|
GCC_CP_FLAG_FIELD_MUTABLE = GCC_CP_FLAG_BASE,
|
|
|
|
GCC_CP_FLAG_END_FIELD,
|
|
GCC_CP_FLAG_MASK_FIELD = (((GCC_CP_FLAG_END_FIELD - 1) << 1)
|
|
- GCC_CP_FLAG_BASE),
|
|
|
|
/* Flags to be used when defining an enum with
|
|
start_new_enum_type. */
|
|
|
|
/* This indicates an enum type without any flags. */
|
|
GCC_CP_FLAG_ENUM_NOFLAG = 0,
|
|
|
|
/* This indicates a scoped enum type. */
|
|
GCC_CP_FLAG_ENUM_SCOPED = GCC_CP_FLAG_BASE,
|
|
|
|
GCC_CP_FLAG_END_ENUM,
|
|
GCC_CP_FLAG_MASK_ENUM = (((GCC_CP_FLAG_END_ENUM - 1) << 1)
|
|
- GCC_CP_FLAG_BASE),
|
|
|
|
|
|
/* Flags to be used when introducing a class or a class template
|
|
with build_decl. */
|
|
|
|
/* This indicates an enum type without any flags. */
|
|
GCC_CP_FLAG_CLASS_NOFLAG = 0,
|
|
|
|
/* This indicates the class is actually a struct. This has no
|
|
effect whatsoever on access control in this interface, since all
|
|
class members must have explicit access control bits set, but it
|
|
may affect error messages. */
|
|
GCC_CP_FLAG_CLASS_IS_STRUCT = GCC_CP_FLAG_BASE,
|
|
|
|
GCC_CP_FLAG_END_CLASS,
|
|
GCC_CP_FLAG_MASK_CLASS = (((GCC_CP_FLAG_END_CLASS - 1) << 1)
|
|
- GCC_CP_FLAG_BASE),
|
|
|
|
|
|
/* Flags to be used when introducing a virtual base class in a
|
|
gcc_vbase_array. */
|
|
|
|
/* This indicates an enum type without any flags. */
|
|
GCC_CP_FLAG_BASECLASS_NOFLAG = 0,
|
|
|
|
/* This indicates the class is actually a struct. This has no
|
|
effect whatsoever on access control in this interface, since all
|
|
class members must have explicit access control bits set, but it
|
|
may affect error messages. */
|
|
GCC_CP_FLAG_BASECLASS_VIRTUAL = GCC_CP_FLAG_BASE,
|
|
|
|
GCC_CP_FLAG_END_BASECLASS,
|
|
GCC_CP_FLAG_MASK_BASECLASS = (((GCC_CP_FLAG_END_BASECLASS - 1) << 1)
|
|
- GCC_CP_FLAG_BASE),
|
|
|
|
|
|
GCC_CP_FLAG_MASK = (GCC_CP_FLAG_MASK_FUNCTION
|
|
| GCC_CP_FLAG_MASK_VARIABLE
|
|
| GCC_CP_FLAG_MASK_FIELD
|
|
| GCC_CP_FLAG_MASK_ENUM
|
|
| GCC_CP_FLAG_MASK_CLASS
|
|
| GCC_CP_FLAG_MASK_BASECLASS
|
|
)
|
|
};
|
|
|
|
|
|
/* An array of types used for creating lists of base classes. */
|
|
|
|
struct gcc_vbase_array
|
|
{
|
|
/* Number of elements. */
|
|
|
|
int n_elements;
|
|
|
|
/* The base classes. */
|
|
|
|
gcc_type *elements;
|
|
|
|
/* Flags for each base class. Used to indicate access control and
|
|
virtualness. */
|
|
|
|
enum gcc_cp_symbol_kind *flags;
|
|
};
|
|
|
|
|
|
/* This enumerates the types of symbols that GCC might request from
|
|
GDB. */
|
|
|
|
enum gcc_cp_oracle_request
|
|
{
|
|
/* An identifier in namespace scope -- type, variable, function,
|
|
namespace, template. All namespace-scoped symbols with the
|
|
requested name, in any namespace (including the global
|
|
namespace), should be defined in response to this request. */
|
|
|
|
GCC_CP_ORACLE_IDENTIFIER
|
|
};
|
|
|
|
/* The type of the function called by GCC to ask GDB for a symbol's
|
|
definition. DATUM is an arbitrary value supplied when the oracle
|
|
function is registered. CONTEXT is the GCC context in which the
|
|
request is being made. REQUEST specifies what sort of symbol is
|
|
being requested, and IDENTIFIER is the name of the symbol. */
|
|
|
|
typedef void gcc_cp_oracle_function (void *datum,
|
|
struct gcc_cp_context *context,
|
|
enum gcc_cp_oracle_request request,
|
|
const char *identifier);
|
|
|
|
/* The type of the function called by GCC to ask GDB for a symbol's
|
|
address. This should return 0 if the address is not known. */
|
|
|
|
typedef gcc_address gcc_cp_symbol_address_function (void *datum,
|
|
struct gcc_cp_context *ctxt,
|
|
const char *identifier);
|
|
|
|
/* The type of the function called by GCC to ask GDB to enter or leave
|
|
the user expression scope. */
|
|
|
|
typedef void gcc_cp_enter_leave_user_expr_scope_function (void *datum,
|
|
struct gcc_cp_context
|
|
*context);
|
|
|
|
/* The vtable used by the C front end. */
|
|
|
|
struct gcc_cp_fe_vtable
|
|
{
|
|
/* The version of the C interface. The value is one of the
|
|
gcc_cp_api_version constants. */
|
|
|
|
unsigned int cp_version;
|
|
|
|
/* Set the callbacks for this context.
|
|
|
|
The binding oracle is called whenever the C++ parser needs to
|
|
look up a symbol. This gives the caller a chance to lazily
|
|
instantiate symbols using other parts of the gcc_cp_fe_interface
|
|
API. The symbol is looked up without a scope, and the oracle
|
|
must supply a definition for ALL namespace-scoped definitions
|
|
bound to the symbol.
|
|
|
|
The address oracle is called whenever the C++ parser needs to
|
|
look up a symbol. This may be called for symbols not provided by
|
|
the symbol oracle, such as built-in functions where GCC provides
|
|
the declaration; other internal symbols, such as those related
|
|
with thunks, rtti, and virtual tables are likely to be queried
|
|
through this interface too. The identifier is a mangled symbol
|
|
name.
|
|
|
|
DATUM is an arbitrary piece of data that is passed back verbatim
|
|
to the callbacks in requests. */
|
|
|
|
void (*set_callbacks) (struct gcc_cp_context *self,
|
|
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);
|
|
|
|
#define GCC_METHOD0(R, N) \
|
|
R (*N) (struct gcc_cp_context *);
|
|
#define GCC_METHOD1(R, N, A) \
|
|
R (*N) (struct gcc_cp_context *, A);
|
|
#define GCC_METHOD2(R, N, A, B) \
|
|
R (*N) (struct gcc_cp_context *, A, B);
|
|
#define GCC_METHOD3(R, N, A, B, C) \
|
|
R (*N) (struct gcc_cp_context *, A, B, C);
|
|
#define GCC_METHOD4(R, N, A, B, C, D) \
|
|
R (*N) (struct gcc_cp_context *, A, B, C, D);
|
|
#define GCC_METHOD5(R, N, A, B, C, D, E) \
|
|
R (*N) (struct gcc_cp_context *, A, B, C, D, E);
|
|
#define GCC_METHOD7(R, N, A, B, C, D, E, F, G) \
|
|
R (*N) (struct gcc_cp_context *, A, B, C, D, E, F, G);
|
|
|
|
#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
|
|
|
|
};
|
|
|
|
/* The C front end object. */
|
|
|
|
struct gcc_cp_context
|
|
{
|
|
/* Base class. */
|
|
|
|
struct gcc_base_context base;
|
|
|
|
/* Our vtable. This is a separate field because this is simpler
|
|
than implementing a vtable inheritance scheme in C. */
|
|
|
|
const struct gcc_cp_fe_vtable *cp_ops;
|
|
};
|
|
|
|
/* The name of the .so that the compiler builds. We dlopen this
|
|
later. */
|
|
|
|
#define GCC_CP_FE_LIBCC libcc1.so
|
|
|
|
/* The compiler exports a single initialization function. This macro
|
|
holds its name as a symbol. */
|
|
|
|
#define GCC_CP_FE_CONTEXT gcc_cp_fe_context
|
|
|
|
/* The type of the initialization function. The caller passes in the
|
|
desired base version and desired C-specific version. If the
|
|
request can be satisfied, a compatible gcc_context object will be
|
|
returned. Otherwise, the function returns NULL. */
|
|
|
|
typedef struct gcc_cp_context *gcc_cp_fe_context_function
|
|
(enum gcc_base_api_version,
|
|
enum gcc_cp_api_version);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* GCC_CP_INTERFACE_H */
|