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| author | Tom Tromey <tom@tromey.com> | 2021-03-08 07:27:57 -0700 |
|---|---|---|
| committer | Tom Tromey <tom@tromey.com> | 2021-03-08 07:28:23 -0700 |
| commit | f6b4232691d79a9e4b54934529f4b34081d79d94 (patch) | |
| tree | 1e14c60f34970a1c8b8dc04c19ec60622a91bf64 | |
| parent | cbc18219d313984150f25af6cc66c866e1686190 (diff) | |
| download | gdb-f6b4232691d79a9e4b54934529f4b34081d79d94.zip gdb-f6b4232691d79a9e4b54934529f4b34081d79d94.tar.gz gdb-f6b4232691d79a9e4b54934529f4b34081d79d94.tar.bz2 | |
Introduce op_this_operation
This adds class op_this_operation, which implements OP_THIS.
gdb/ChangeLog
2021-03-08 Tom Tromey <tom@tromey.com>
* expop.h (class op_this_operation): New.
* ax-gdb.c (op_this_operation::do_generate_ax): New method.
| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/ax-gdb.c | 25 | ||||
| -rw-r--r-- | gdb/expop.h | 27 |
3 files changed, 57 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index f93f0f2..e9ba10d 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,10 @@ 2021-03-08 Tom Tromey <tom@tromey.com> + * expop.h (class op_this_operation): New. + * ax-gdb.c (op_this_operation::do_generate_ax): New method. + +2021-03-08 Tom Tromey <tom@tromey.com> + * expop.h (class unop_memval_operation) (class unop_memval_type_operation): New. * eval.c (eval_op_memval): No longer static. diff --git a/gdb/ax-gdb.c b/gdb/ax-gdb.c index 6514e40..98edc6c 100644 --- a/gdb/ax-gdb.c +++ b/gdb/ax-gdb.c @@ -2554,6 +2554,31 @@ unop_memval_type_operation::do_generate_ax (struct expression *exp, value->kind = axs_lvalue_memory; } +void +op_this_operation::do_generate_ax (struct expression *exp, + struct agent_expr *ax, + struct axs_value *value, + struct type *cast_type) +{ + struct symbol *sym, *func; + const struct block *b; + const struct language_defn *lang; + + b = block_for_pc (ax->scope); + func = block_linkage_function (b); + lang = language_def (func->language ()); + + sym = lookup_language_this (lang, b).symbol; + if (!sym) + error (_("no `%s' found"), lang->name_of_this ()); + + gen_var_ref (ax, value, sym); + + if (value->optimized_out) + error (_("`%s' has been optimized out, cannot use"), + sym->print_name ()); +} + } /* This handles the middle-to-right-side of code generation for binary diff --git a/gdb/expop.h b/gdb/expop.h index b808c0f..7c0768c 100644 --- a/gdb/expop.h +++ b/gdb/expop.h @@ -1713,6 +1713,33 @@ protected: 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; +}; + } /* namespace expr */ #endif /* EXPOP_H */ |