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bh=b+yHYfJl0OKN05dhMgpJsrP8WZvNSLrmZwW41JkqgTY=; b=VQwltOhpx0iJhrIl2mTauvZPkG 6UCvqF0at0RBA/y46OTVzG3Vbrmrpq+jlESEpc9L8FRGxfftNs093nAbEzqv/N62njxe4CMjLpqze 1wHkhYvbFz+8RWrEwaoLA0ptE; Received: from 97-122-81-39.hlrn.qwest.net ([97.122.81.39]:60392 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 1kvSHE-0029SU-HV for gdb-patches@sourceware.org; Fri, 01 Jan 2021 14:48:04 -0700 From: Tom Tromey To: gdb-patches@sourceware.org Subject: [PATCH 083/203] Introduce register_operation Date: Fri, 1 Jan 2021 14:45:23 -0700 Message-Id: <20210101214723.1784144-84-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: 1kvSHE-0029SU-HV X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 97-122-81-39.hlrn.qwest.net (localhost.localdomain) [97.122.81.39]:60392 X-Source-Auth: tom+tromey.com X-Email-Count: 84 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 register_operation, which implements OP_REGISTER. gdb/ChangeLog 2021-01-01 Tom Tromey * expop.h (class register_operation): New. * eval.c (eval_op_register): No longer static. * ax-gdb.c (register_operation::do_generate_ax): New method. --- gdb/ChangeLog | 6 ++++++ gdb/ax-gdb.c | 24 ++++++++++++++++++++++++ gdb/eval.c | 2 +- gdb/expop.h | 30 ++++++++++++++++++++++++++++++ 4 files changed, 61 insertions(+), 1 deletion(-) diff --git a/gdb/ax-gdb.c b/gdb/ax-gdb.c index 60281700703..5ffe5a00da1 100644 --- a/gdb/ax-gdb.c +++ b/gdb/ax-gdb.c @@ -2341,6 +2341,30 @@ var_msym_value_operation::do_generate_ax (struct expression *exp, } } +void +register_operation::do_generate_ax (struct expression *exp, + struct agent_expr *ax, + struct axs_value *value, + struct type *cast_type) +{ + const char *name = std::get<0> (m_storage).c_str (); + int len = std::get<0> (m_storage).size (); + int reg; + + reg = user_reg_map_name_to_regnum (ax->gdbarch, name, len); + if (reg == -1) + internal_error (__FILE__, __LINE__, + _("Register $%s not available"), name); + /* No support for tracing user registers yet. */ + if (reg >= gdbarch_num_cooked_regs (ax->gdbarch)) + error (_("'%s' is a user-register; " + "GDB cannot yet trace user-register contents."), + name); + value->kind = axs_lvalue_register; + value->u.reg = reg; + value->type = register_type (ax->gdbarch, reg); +} + } /* This handles the middle-to-right-side of code generation for binary diff --git a/gdb/eval.c b/gdb/eval.c index f28c7ace8be..510a7b720cb 100644 --- a/gdb/eval.c +++ b/gdb/eval.c @@ -1245,7 +1245,7 @@ eval_op_func_static_var (struct type *expect_type, struct expression *exp, return evaluate_var_value (noside, sym.block, sym.symbol); } -static struct value * +struct value * eval_op_register (struct type *expect_type, struct expression *exp, enum noside noside, const char *name) { diff --git a/gdb/expop.h b/gdb/expop.h index 110ad0a29ab..32b57a0fff7 100644 --- a/gdb/expop.h +++ b/gdb/expop.h @@ -57,6 +57,9 @@ extern struct value *eval_op_func_static_var (struct type *expect_type, struct expression *exp, enum noside noside, value *func, const char *var); +extern struct value *eval_op_register (struct type *expect_type, + struct expression *exp, + enum noside noside, const char *name); namespace expr { @@ -586,6 +589,33 @@ class last_operation { return OP_LAST; } }; +class register_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 eval_op_register (expect_type, exp, noside, + std::get<0> (m_storage).c_str ()); + } + + enum exp_opcode opcode () const override + { return OP_REGISTER; } + +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