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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 07:28:16 -0700 |
| commit | 55bdbff857f80da9e3464968f1ada2be3484fcf9 (patch) | |
| tree | 64222256f769da20623e489abd09751792736747 | |
| parent | 247d935b83da28edeb0894f5425190d92a2e786a (diff) | |
| download | gdb-55bdbff857f80da9e3464968f1ada2be3484fcf9.zip gdb-55bdbff857f80da9e3464968f1ada2be3484fcf9.tar.gz gdb-55bdbff857f80da9e3464968f1ada2be3484fcf9.tar.bz2 | |
Introduce register_operation
This adds class register_operation, which implements OP_REGISTER.
gdb/ChangeLog
2021-03-08 Tom Tromey <tom@tromey.com>
* expop.h (class register_operation): New.
* eval.c (eval_op_register): No longer static.
* ax-gdb.c (register_operation::do_generate_ax): New method.
| -rw-r--r-- | gdb/ChangeLog | 6 | ||||
| -rw-r--r-- | gdb/ax-gdb.c | 24 | ||||
| -rw-r--r-- | gdb/eval.c | 2 | ||||
| -rw-r--r-- | gdb/expop.h | 30 |
4 files changed, 61 insertions, 1 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index b237cad..0633260 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,11 @@ 2021-03-08 Tom Tromey <tom@tromey.com> + * expop.h (class register_operation): New. + * eval.c (eval_op_register): No longer static. + * ax-gdb.c (register_operation::do_generate_ax): New method. + +2021-03-08 Tom Tromey <tom@tromey.com> + * expop.h (class last_operation): New. 2021-03-08 Tom Tromey <tom@tromey.com> diff --git a/gdb/ax-gdb.c b/gdb/ax-gdb.c index 6028170..5ffe5a0 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 @@ -1254,7 +1254,7 @@ eval_op_func_static_var (struct type *expect_type, struct expression *exp, /* Helper function that implements the body of OP_REGISTER. */ -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 73b66bf..a0e0030 100644 --- a/gdb/expop.h +++ b/gdb/expop.h @@ -58,6 +58,9 @@ 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 { @@ -597,6 +600,33 @@ public: { return OP_LAST; } }; +class register_operation + : public tuple_holding_operation<std::string> +{ +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 */ |