/* Definitions for expressions in GDB
- Copyright (C) 2020 Free Software Foundation, Inc.
+ Copyright (C) 2020-2022 Free Software Foundation, Inc.
This file is part of GDB.
struct expression *exp,
enum noside noside,
bool outermost_p,
- minimal_symbol *msymbol,
- struct objfile *objfile);
+ bound_minimal_symbol msymbol);
extern struct value *eval_op_var_entry_value (struct type *expect_type,
struct expression *exp,
enum noside noside, symbol *sym);
extern struct value *eval_op_register (struct type *expect_type,
struct expression *exp,
enum noside noside, const char *name);
-extern struct value *eval_op_string (struct type *expect_type,
- struct expression *exp,
- enum noside noside, int len,
- const char *string);
extern struct value *eval_op_ternop (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct expression *exp,
enum noside noside,
struct value *arg1, struct value *arg2);
-extern struct value *eval_op_concat (struct type *expect_type,
- struct expression *exp,
- enum noside noside,
- struct value *arg1, struct value *arg2);
extern struct value *eval_op_add (struct type *expect_type,
struct expression *exp,
enum noside noside,
struct expression *exp,
enum noside noside,
struct value *arg1, struct type *type);
+extern struct value *eval_binop_assign_modify (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside,
+ enum exp_opcode op,
+ struct value *arg1,
+ struct value *arg2);
namespace expr
{
+class ada_component;
+
/* The check_objfile overloads are used to check whether a particular
component of some operation references an objfile. The passed-in
objfile will never be a debug objfile. */
return exp_objfile == objfile;
}
-static inline bool
+static inline bool
check_objfile (struct type *type, struct objfile *objfile)
{
struct objfile *ty_objfile = type->objfile_owner ();
return false;
}
-static inline bool
+static inline bool
check_objfile (struct symbol *sym, struct objfile *objfile)
{
- return check_objfile (symbol_objfile (sym), objfile);
+ return check_objfile (sym->objfile (), objfile);
}
-static inline bool
+static inline bool
check_objfile (const struct block *block, struct objfile *objfile)
{
return check_objfile (block_objfile (block), objfile);
}
static inline bool
-check_objfile (minimal_symbol *minsym, struct objfile *objfile)
+check_objfile (const block_symbol &sym, struct objfile *objfile)
{
- /* This may seem strange but minsyms are only used with an objfile
- as well. */
- return false;
+ return (check_objfile (sym.symbol, objfile)
+ || check_objfile (sym.block, objfile));
+}
+
+static inline bool
+check_objfile (bound_minimal_symbol minsym, struct objfile *objfile)
+{
+ return check_objfile (minsym.objfile, objfile);
}
static inline bool
return false;
}
-static inline bool
+static inline bool
check_objfile (const operation_up &op, struct objfile *objfile)
{
return op->uses_objfile (objfile);
}
template<typename T>
-static inline bool
+static inline bool
check_objfile (const std::vector<T> &collection, struct objfile *objfile)
{
for (const auto &item : collection)
}
template<typename S, typename T>
-static inline bool
+static inline bool
check_objfile (const std::pair<S, T> &item, struct objfile *objfile)
{
return (check_objfile (item.first, objfile)
|| check_objfile (item.second, objfile));
}
+extern bool check_objfile (const std::unique_ptr<ada_component> &comp,
+ struct objfile *objfile);
+
static inline void
dump_for_expression (struct ui_file *stream, int depth,
const operation_up &op)
extern void dump_for_expression (struct ui_file *stream, int depth,
symbol *sym);
extern void dump_for_expression (struct ui_file *stream, int depth,
- minimal_symbol *msym);
+ const block_symbol &sym);
+extern void dump_for_expression (struct ui_file *stream, int depth,
+ bound_minimal_symbol msym);
extern void dump_for_expression (struct ui_file *stream, int depth,
const block *bl);
extern void dump_for_expression (struct ui_file *stream, int depth,
extern void dump_for_expression (struct ui_file *stream, int depth,
enum range_flag flags);
extern void dump_for_expression (struct ui_file *stream, int depth,
- objfile *objf);
+ const std::unique_ptr<ada_component> &comp);
template<typename T>
void
dump_for_expression (struct ui_file *stream, int depth,
const std::vector<T> &vals)
{
- fprintf_filtered (stream, _("%*sVector:\n"), depth, "");
+ gdb_printf (stream, _("%*sVector:\n"), depth, "");
for (auto &item : vals)
dump_for_expression (stream, depth + 1, item);
}
}
static inline bool
-check_constant (struct minimal_symbol *msym)
+check_constant (bound_minimal_symbol msym)
{
return false;
}
return true;
}
-static inline bool
-check_constant (struct objfile *objfile)
-{
- return true;
-}
-
static inline bool
check_constant (ULONGEST cst)
{
static inline bool
check_constant (struct symbol *sym)
{
- enum address_class sc = SYMBOL_CLASS (sym);
+ enum address_class sc = sym->aclass ();
return (sc == LOC_BLOCK
|| sc == LOC_CONST
|| sc == LOC_CONST_BYTES
|| sc == LOC_LABEL);
}
+static inline bool
+check_constant (const block_symbol &sym)
+{
+ /* We know the block is constant, so we only need to check the
+ symbol. */
+ return check_constant (sym.symbol);
+}
+
template<typename T>
static inline bool
check_constant (const std::vector<T> &collection)
value *evaluate_for_address (struct expression *exp,
enum noside noside) override;
+ value *evaluate_funcall (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside,
+ const std::vector<operation_up> &args) override;
+
enum exp_opcode opcode () const override
{ return OP_SCOPE; }
override;
};
+/* Compute the value of a variable. */
+class var_value_operation
+ : public maybe_constant_operation<block_symbol>
+{
+public:
+
+ using maybe_constant_operation::maybe_constant_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override;
+
+ value *evaluate_with_coercion (struct expression *exp,
+ enum noside noside) override;
+
+ value *evaluate_for_sizeof (struct expression *exp, enum noside noside)
+ override;
+
+ value *evaluate_for_cast (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override;
+
+ value *evaluate_for_address (struct expression *exp, enum noside noside)
+ override;
+
+ value *evaluate_funcall (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside,
+ const std::vector<operation_up> &args) override;
+
+ enum exp_opcode opcode () const override
+ { return OP_VAR_VALUE; }
+
+ /* Return the symbol referenced by this object. */
+ symbol *get_symbol () const
+ {
+ return std::get<0> (m_storage).symbol;
+ }
+
+protected:
+
+ void do_generate_ax (struct expression *exp,
+ struct agent_expr *ax,
+ struct axs_value *value,
+ struct type *cast_type)
+ override;
+};
+
class long_const_operation
: public tuple_holding_operation<struct type *, LONGEST>
{
};
class var_msym_value_operation
- : public maybe_constant_operation<minimal_symbol *, struct objfile *>
+ : public maybe_constant_operation<bound_minimal_symbol>
{
public:
enum noside noside) override
{
return eval_op_var_msym_value (expect_type, exp, noside, m_outermost,
- std::get<0> (m_storage),
- std::get<1> (m_storage));
+ std::get<0> (m_storage));
}
value *evaluate_for_sizeof (struct expression *exp, enum noside noside)
struct expression *exp,
enum noside noside) override;
+ value *evaluate_funcall (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside,
+ const std::vector<operation_up> &args) override
+ {
+ const char *name = std::get<0> (m_storage).minsym->print_name ();
+ return operation::evaluate_funcall (expect_type, exp, noside, name, args);
+ }
+
enum exp_opcode opcode () const override
{ return OP_VAR_MSYM_VALUE; }
enum exp_opcode opcode () const override
{ return OP_REGISTER; }
+ /* Return the name of the register. */
+ const char *get_name () const
+ {
+ return std::get<0> (m_storage).c_str ();
+ }
+
protected:
void do_generate_ax (struct expression *exp,
value *evaluate (struct type *expect_type,
struct expression *exp,
- enum noside noside) override
- {
- const std::string &str = std::get<0> (m_storage);
- return eval_op_string (expect_type, exp, noside,
- str.size (), str.c_str ());
- }
+ enum noside noside) override;
enum exp_opcode opcode () const override
{ return OP_STRING; }
return std::get<1> (m_storage);
}
- /* Used for completion. Evaluate the LHS for type. */
- value *evaluate_lhs (struct expression *exp)
+ value *evaluate_funcall (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside,
+ const std::vector<operation_up> &args) override;
+
+ /* Try to complete this operation in the context of EXP. TRACKER is
+ the completion tracker to update. Return true if completion was
+ possible, false otherwise. */
+ virtual bool complete (struct expression *exp, completion_tracker &tracker)
{
- return std::get<0> (m_storage)->evaluate (nullptr, exp,
- EVAL_AVOID_SIDE_EFFECTS);
+ return complete (exp, tracker, "");
}
protected:
+ /* Do the work of the public 'complete' method. PREFIX is prepended
+ to each result. */
+ bool complete (struct expression *exp, completion_tracker &tracker,
+ const char *prefix);
+
using tuple_holding_operation::tuple_holding_operation;
};
}
};
-class structop_member_operation
+class structop_member_base
: public tuple_holding_operation<operation_up, operation_up>
{
public:
using tuple_holding_operation::tuple_holding_operation;
+ value *evaluate_funcall (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside,
+ const std::vector<operation_up> &args) override;
+};
+
+class structop_member_operation
+ : public structop_member_base
+{
+public:
+
+ using structop_member_base::structop_member_base;
+
value *evaluate (struct type *expect_type,
struct expression *exp,
enum noside noside) override
};
class structop_mptr_operation
- : public tuple_holding_operation<operation_up, operation_up>
+ : public structop_member_base
{
public:
- using tuple_holding_operation::tuple_holding_operation;
+ using structop_member_base::structop_member_base;
value *evaluate (struct type *expect_type,
struct expression *exp,
= std::get<0> (m_storage)->evaluate_with_coercion (exp, noside);
value *rhs
= std::get<1> (m_storage)->evaluate_with_coercion (exp, noside);
- return eval_op_concat (expect_type, exp, noside, lhs, rhs);
+ return value_concat (lhs, rhs);
}
enum exp_opcode opcode () const override
}
};
-using equal_operation = comparison_operation<BINOP_EQUAL, eval_op_equal>;
+class equal_operation
+ : public comparison_operation<BINOP_EQUAL, eval_op_equal>
+{
+public:
+
+ using comparison_operation::comparison_operation;
+
+ operation *get_lhs () const
+ {
+ return std::get<0> (m_storage).get ();
+ }
+
+ operation *get_rhs () const
+ {
+ return std::get<1> (m_storage).get ();
+ }
+};
+
using notequal_operation
= comparison_operation<BINOP_NOTEQUAL, eval_op_notequal>;
using less_operation = comparison_operation<BINOP_LESS, eval_op_less>;
struct expression *exp,
enum noside noside) override
{
- if (noside == EVAL_SKIP)
- return eval_skip_value (exp);
- else if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ if (noside == EVAL_AVOID_SIDE_EFFECTS)
return std::get<0> (m_storage)->evaluate (nullptr, exp,
EVAL_AVOID_SIDE_EFFECTS);
else
struct expression *exp,
enum noside noside) override
{
- if (noside == EVAL_SKIP)
- return eval_skip_value (exp);
- else if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ if (noside == EVAL_AVOID_SIDE_EFFECTS)
{
value *result
= std::get<0> (m_storage)->evaluate (nullptr, exp,
enum noside noside) override
{
/* C++: check for and handle pointer to members. */
- if (noside == EVAL_SKIP)
- return eval_skip_value (exp);
- else
- return std::get<0> (m_storage)->evaluate_for_address (exp, noside);
+ return std::get<0> (m_storage)->evaluate_for_address (exp, noside);
}
enum exp_opcode opcode () const override
{ return UNOP_ADDR; }
+ /* Return the subexpression. */
+ const operation_up &get_expression () const
+ {
+ return std::get<0> (m_storage);
+ }
+
protected:
void do_generate_ax (struct expression *exp,
struct expression *exp,
enum noside noside) override
{
- if (noside == EVAL_SKIP)
- return eval_skip_value (exp);
return std::get<0> (m_storage)->evaluate_for_sizeof (exp, noside);
}
enum exp_opcode opcode () const override
{ return UNOP_MEMVAL; }
+ /* Return the type referenced by this object. */
+ struct type *get_type () const
+ {
+ return std::get<1> (m_storage);
+ }
+
protected:
void do_generate_ax (struct expression *exp,
override;
};
+/* Implement the 'this' expression. */
+class op_this_operation
+ : public tuple_holding_operation<>
+{
+public:
+
+ using tuple_holding_operation::tuple_holding_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override
+ {
+ return value_of_this (exp->language_defn);
+ }
+
+ enum exp_opcode opcode () const override
+ { return OP_THIS; }
+
+protected:
+
+ void do_generate_ax (struct expression *exp,
+ struct agent_expr *ax,
+ struct axs_value *value,
+ struct type *cast_type)
+ override;
+};
+
+/* Implement the "type instance" operation. */
+class type_instance_operation
+ : public tuple_holding_operation<type_instance_flags, std::vector<type *>,
+ operation_up>
+{
+public:
+
+ using tuple_holding_operation::tuple_holding_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override;
+
+ enum exp_opcode opcode () const override
+ { return TYPE_INSTANCE; }
+};
+
+/* The assignment operator. */
+class assign_operation
+ : public tuple_holding_operation<operation_up, operation_up>
+{
+public:
+
+ using tuple_holding_operation::tuple_holding_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override
+ {
+ value *lhs = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
+ /* Special-case assignments where the left-hand-side is a
+ convenience variable -- in these, don't bother setting an
+ expected type. This avoids a weird case where re-assigning a
+ string or array to an internal variable could error with "Too
+ many array elements". */
+ struct type *xtype = (VALUE_LVAL (lhs) == lval_internalvar
+ ? nullptr
+ : value_type (lhs));
+ value *rhs = std::get<1> (m_storage)->evaluate (xtype, exp, noside);
+
+ if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ return lhs;
+ if (binop_user_defined_p (BINOP_ASSIGN, lhs, rhs))
+ return value_x_binop (lhs, rhs, BINOP_ASSIGN, OP_NULL, noside);
+ else
+ return value_assign (lhs, rhs);
+ }
+
+ enum exp_opcode opcode () const override
+ { return BINOP_ASSIGN; }
+
+ /* Return the left-hand-side of the assignment. */
+ operation *get_lhs () const
+ {
+ return std::get<0> (m_storage).get ();
+ }
+
+protected:
+
+ void do_generate_ax (struct expression *exp,
+ struct agent_expr *ax,
+ struct axs_value *value,
+ struct type *cast_type)
+ override;
+};
+
+/* Assignment with modification, like "+=". */
+class assign_modify_operation
+ : public tuple_holding_operation<exp_opcode, operation_up, operation_up>
+{
+public:
+
+ using tuple_holding_operation::tuple_holding_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override
+ {
+ value *lhs = std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
+ value *rhs = std::get<2> (m_storage)->evaluate (expect_type, exp, noside);
+ return eval_binop_assign_modify (expect_type, exp, noside,
+ std::get<0> (m_storage), lhs, rhs);
+ }
+
+ enum exp_opcode opcode () const override
+ { return BINOP_ASSIGN_MODIFY; }
+
+protected:
+
+ void do_generate_ax (struct expression *exp,
+ struct agent_expr *ax,
+ struct axs_value *value,
+ struct type *cast_type)
+ override;
+};
+
+/* Not a cast! Extract a value of a given type from the contents of a
+ value. The new value is extracted from the least significant bytes
+ of the old value. The new value's type must be no bigger than the
+ old values type. */
+class unop_extract_operation
+ : public maybe_constant_operation<operation_up, struct type *>
+{
+public:
+
+ using maybe_constant_operation::maybe_constant_operation;
+
+ value *evaluate (struct type *expect_type, struct expression *exp,
+ enum noside noside) override;
+
+ enum exp_opcode opcode () const override
+ { return UNOP_EXTRACT; }
+
+ /* Return the type referenced by this object. */
+ struct type *get_type () const
+ {
+ return std::get<1> (m_storage);
+ }
+
+protected:
+
+ void do_generate_ax (struct expression *exp,
+ struct agent_expr *ax,
+ struct axs_value *value,
+ struct type *cast_type) override;
+};
+
+/* A type cast. */
+class unop_cast_operation
+ : public maybe_constant_operation<operation_up, struct type *>
+{
+public:
+
+ using maybe_constant_operation::maybe_constant_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override
+ {
+ return std::get<0> (m_storage)->evaluate_for_cast (std::get<1> (m_storage),
+ exp, noside);
+ }
+
+ enum exp_opcode opcode () const override
+ { return UNOP_CAST; }
+
+ /* Return the type referenced by this object. */
+ struct type *get_type () const
+ {
+ return std::get<1> (m_storage);
+ }
+
+protected:
+
+ void do_generate_ax (struct expression *exp,
+ struct agent_expr *ax,
+ struct axs_value *value,
+ struct type *cast_type)
+ override;
+};
+
+/* A cast, but the type comes from an expression, not a "struct
+ type". */
+class unop_cast_type_operation
+ : public maybe_constant_operation<operation_up, operation_up>
+{
+public:
+
+ using maybe_constant_operation::maybe_constant_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override
+ {
+ value *val = std::get<0> (m_storage)->evaluate (nullptr, exp,
+ EVAL_AVOID_SIDE_EFFECTS);
+ return std::get<1> (m_storage)->evaluate_for_cast (value_type (val),
+ exp, noside);
+ }
+
+ enum exp_opcode opcode () const override
+ { return UNOP_CAST_TYPE; }
+
+protected:
+
+ void do_generate_ax (struct expression *exp,
+ struct agent_expr *ax,
+ struct axs_value *value,
+ struct type *cast_type)
+ override;
+};
+
+typedef value *cxx_cast_ftype (struct type *, value *);
+
+/* This implements dynamic_cast and reinterpret_cast. static_cast and
+ const_cast are handled by the ordinary case operations. */
+template<exp_opcode OP, cxx_cast_ftype FUNC>
+class cxx_cast_operation
+ : public maybe_constant_operation<operation_up, operation_up>
+{
+public:
+
+ using maybe_constant_operation::maybe_constant_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override
+ {
+ value *val = std::get<0> (m_storage)->evaluate (nullptr, exp,
+ EVAL_AVOID_SIDE_EFFECTS);
+ struct type *type = value_type (val);
+ value *rhs = std::get<1> (m_storage)->evaluate (type, exp, noside);
+ return FUNC (type, rhs);
+ }
+
+ enum exp_opcode opcode () const override
+ { return OP; }
+};
+
+using dynamic_cast_operation = cxx_cast_operation<UNOP_DYNAMIC_CAST,
+ value_dynamic_cast>;
+using reinterpret_cast_operation = cxx_cast_operation<UNOP_REINTERPRET_CAST,
+ value_reinterpret_cast>;
+
+/* Multi-dimensional subscripting. */
+class multi_subscript_operation
+ : public tuple_holding_operation<operation_up, std::vector<operation_up>>
+{
+public:
+
+ using tuple_holding_operation::tuple_holding_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override;
+
+ enum exp_opcode opcode () const override
+ { return MULTI_SUBSCRIPT; }
+};
+
+/* The "&&" operator. */
+class logical_and_operation
+ : public maybe_constant_operation<operation_up, operation_up>
+{
+public:
+
+ using maybe_constant_operation::maybe_constant_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override;
+
+ enum exp_opcode opcode () const override
+ { return BINOP_LOGICAL_AND; }
+
+protected:
+
+ void do_generate_ax (struct expression *exp,
+ struct agent_expr *ax,
+ struct axs_value *value,
+ struct type *cast_type)
+ override;
+};
+
+/* The "||" operator. */
+class logical_or_operation
+ : public maybe_constant_operation<operation_up, operation_up>
+{
+public:
+
+ using maybe_constant_operation::maybe_constant_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override;
+
+ enum exp_opcode opcode () const override
+ { return BINOP_LOGICAL_OR; }
+
+protected:
+
+ void do_generate_ax (struct expression *exp,
+ struct agent_expr *ax,
+ struct axs_value *value,
+ struct type *cast_type)
+ override;
+};
+
+/* This class implements ADL (aka Koenig) function calls for C++. It
+ holds the name of the function to call, the block in which the
+ lookup should be done, and a vector of arguments. */
+class adl_func_operation
+ : public tuple_holding_operation<std::string, const block *,
+ std::vector<operation_up>>
+{
+public:
+
+ using tuple_holding_operation::tuple_holding_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override;
+
+ enum exp_opcode opcode () const override
+ { return OP_ADL_FUNC; }
+};
+
+/* The OP_ARRAY operation. */
+class array_operation
+ : public tuple_holding_operation<int, int, std::vector<operation_up>>
+{
+public:
+
+ using tuple_holding_operation::tuple_holding_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override;
+
+ enum exp_opcode opcode () const override
+ { return OP_ARRAY; }
+
+private:
+
+ struct value *evaluate_struct_tuple (struct value *struct_val,
+ struct expression *exp,
+ enum noside noside, int nargs);
+};
+
+/* A function call. This holds the callee operation and the
+ arguments. */
+class funcall_operation
+ : public tuple_holding_operation<operation_up, std::vector<operation_up>>
+{
+public:
+
+ using tuple_holding_operation::tuple_holding_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override
+ {
+ return std::get<0> (m_storage)->evaluate_funcall (expect_type, exp, noside,
+ std::get<1> (m_storage));
+ }
+
+ enum exp_opcode opcode () const override
+ { return OP_FUNCALL; }
+};
+
} /* namespace expr */
#endif /* EXPOP_H */
projects / binutils-gdb.git / blobdiff