+protected:
+ std::string m_filename_after_features;
+
+private:
+ char *m_function;
+ bool m_printed_field_type = false;
+ bool m_printed_type = false;
+};
+
+/* Print target description feature in C. */
+
+class print_c_feature : public print_c_tdesc
+{
+public:
+ print_c_feature (std::string &file)
+ : print_c_tdesc (file)
+ {
+ /* Trim ".tmp". */
+ auto const pos = m_filename_after_features.find_last_of ('.');
+
+ m_filename_after_features = m_filename_after_features.substr (0, pos);
+ }
+
+ void visit_pre (const target_desc *e) override
+ {
+ printf_unfiltered (" Original: %s */\n\n",
+ lbasename (m_filename_after_features.c_str ()));
+
+ printf_unfiltered ("#include \"arch/tdesc.h\"\n");
+ printf_unfiltered ("\n");
+ }
+
+ void visit_post (const target_desc *e) override
+ {}
+
+ void visit_pre (const tdesc_feature *e) override
+ {
+ std::string name (m_filename_after_features);
+
+ auto pos = name.find_first_of ('.');
+
+ name = name.substr (0, pos);
+ std::replace (name.begin (), name.end (), '/', '_');
+ std::replace (name.begin (), name.end (), '-', '_');
+
+ printf_unfiltered ("static int\n");
+ printf_unfiltered ("create_feature_%s ", name.c_str ());
+ printf_unfiltered ("(struct target_desc *result, long regnum)\n");
+
+ printf_unfiltered ("{\n");
+ printf_unfiltered (" struct tdesc_feature *feature;\n");
+
+ printf_unfiltered
+ ("\n feature = tdesc_create_feature (result, \"%s\", \"%s\");\n",
+ e->name, lbasename (m_filename_after_features.c_str ()));
+ }
+
+ void visit_post (const tdesc_feature *e) override
+ {
+ printf_unfiltered (" return regnum;\n");
+ printf_unfiltered ("}\n");
+ }
+
+ void visit (const tdesc_reg *reg) override
+ {
+ /* Most "reg" in XML target descriptions don't have "regnum"
+ attribute, so the register number is allocated sequentially.
+ In case that reg has "regnum" attribute, register number
+ should be set by that explicitly. */
+
+ if (reg->target_regnum < m_next_regnum)
+ {
+ /* The integrity check, it can catch some errors on register
+ number collision, like this,
+
+ <reg name="x0" bitsize="32"/>
+ <reg name="x1" bitsize="32"/>
+ <reg name="x2" bitsize="32"/>
+ <reg name="x3" bitsize="32"/>
+ <reg name="ps" bitsize="32" regnum="3"/>
+
+ but it also has false negatives. The target description
+ below is correct,
+
+ <reg name="x1" bitsize="32" regnum="1"/>
+ <reg name="x3" bitsize="32" regnum="3"/>
+ <reg name="x2" bitsize="32" regnum="2"/>
+ <reg name="x4" bitsize="32" regnum="4"/>
+
+ but it is not a good practice, so still error on this,
+ and also print the message so that it can be saved in the
+ generated c file. */
+
+ printf_unfiltered ("ERROR: \"regnum\" attribute %ld ",
+ reg->target_regnum);
+ printf_unfiltered ("is not the largest number (%d).\n",
+ m_next_regnum);
+ error (_("\"regnum\" attribute %ld is not the largest number (%d)."),
+ reg->target_regnum, m_next_regnum);
+ }
+
+ if (reg->target_regnum > m_next_regnum)
+ {
+ printf_unfiltered (" regnum = %ld;\n", reg->target_regnum);
+ m_next_regnum = reg->target_regnum;
+ }
+
+ printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ",
+ reg->name, reg->save_restore);
+ if (reg->group)
+ printf_unfiltered ("\"%s\", ", reg->group);
+ else
+ printf_unfiltered ("NULL, ");
+ printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type);
+
+ m_next_regnum++;
+ }
+
+private:
+ /* The register number to use for the next register we see. */
+ int m_next_regnum = 0;
+};
+
+static void
+maint_print_c_tdesc_cmd (const char *args, int from_tty)
+{
+ const struct target_desc *tdesc;
+ const char *filename;
+
+ if (args == NULL)
+ {
+ /* Use the global target-supplied description, not the current
+ architecture's. This lets a GDB for one architecture generate C
+ for another architecture's description, even though the gdbarch
+ initialization code will reject the new description. */
+ tdesc = current_target_desc;
+ filename = target_description_filename;
+ }
+ else
+ {
+ /* Use the target description from the XML file. */
+ filename = args;
+ tdesc = file_read_description_xml (filename);