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bh=t6lEB3oUbsOyMC48UvqtDwrLwCDMIoNCyEGFsli0Nok=; b=ISiwlky22cbIHbxOmFBCE3ExeH dHWiQEZvOkrbwVOGER7qLHzLMaT8ecIWfW3hX86Wt4mbTr04K0p/mH7k6wvFOwfx4rQvorus2/JMc aXaurQeFin3eEEUZsPIGoxAxG; Received: from 97-122-81-39.hlrn.qwest.net ([97.122.81.39]:60408 helo=localhost.localdomain) by box5379.bluehost.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1kvSHU-0029b0-Lr for gdb-patches@sourceware.org; Fri, 01 Jan 2021 14:48:20 -0700 From: Tom Tromey To: gdb-patches@sourceware.org Subject: [PATCH 115/203] Introduce op_this_operation Date: Fri, 1 Jan 2021 14:45:55 -0700 Message-Id: <20210101214723.1784144-116-tom@tromey.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210101214723.1784144-1-tom@tromey.com> References: <20210101214723.1784144-1-tom@tromey.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - box5379.bluehost.com X-AntiAbuse: Original Domain - sourceware.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - tromey.com X-BWhitelist: no X-Source-IP: 97.122.81.39 X-Source-L: No X-Exim-ID: 1kvSHU-0029b0-Lr X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 97-122-81-39.hlrn.qwest.net (localhost.localdomain) [97.122.81.39]:60408 X-Source-Auth: tom+tromey.com X-Email-Count: 116 X-Source-Cap: ZWx5bnJvYmk7ZWx5bnJvYmk7Ym94NTM3OS5ibHVlaG9zdC5jb20= X-Local-Domain: yes X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gdb-patches-bounces@sourceware.org Sender: "Gdb-patches" This adds class op_this_operation, which implements OP_THIS. gdb/ChangeLog 2021-01-01 Tom Tromey * expop.h (class op_this_operation): New. * ax-gdb.c (op_this_operation::do_generate_ax): New method. --- gdb/ChangeLog | 5 +++++ gdb/ax-gdb.c | 25 +++++++++++++++++++++++++ gdb/expop.h | 27 +++++++++++++++++++++++++++ 3 files changed, 57 insertions(+) diff --git a/gdb/ax-gdb.c b/gdb/ax-gdb.c index 6514e40cdbf..98edc6c0727 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 867cd85ead5..394191ce6e5 100644 --- a/gdb/expop.h +++ b/gdb/expop.h @@ -1702,6 +1702,33 @@ class unop_memval_type_operation 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 */ -- 2.26.2