+
+/* Record the priv spec version string and the corresponding class. */
+
+struct priv_spec_t
+{
+ const char *name;
+ enum riscv_priv_spec_class class;
+};
+
+/* List for all supported privilege versions. */
+
+static const struct priv_spec_t priv_specs[] =
+{
+ {"1.9.1", PRIV_SPEC_CLASS_1P9P1},
+ {"1.10", PRIV_SPEC_CLASS_1P10},
+ {"1.11", PRIV_SPEC_CLASS_1P11},
+
+/* Terminate the list. */
+ {NULL, 0}
+};
+
+/* Get the corresponding CSR version class by giving a privilege
+ version string. */
+
+int
+riscv_get_priv_spec_class (const char *s,
+ enum riscv_priv_spec_class *class)
+{
+ const struct priv_spec_t *version;
+
+ if (s == NULL)
+ return 0;
+
+ for (version = &priv_specs[0]; version->name != NULL; ++version)
+ if (strcmp (version->name, s) == 0)
+ {
+ *class = version->class;
+ return 1;
+ }
+
+ /* Can not find the supported privilege version. */
+ return 0;
+}
+
+/* Get the corresponding CSR version class by giving privilege
+ version numbers. It is usually used to convert the priv
+ attribute numbers into the corresponding class. */
+
+int
+riscv_get_priv_spec_class_from_numbers (unsigned int major,
+ unsigned int minor,
+ unsigned int revision,
+ enum riscv_priv_spec_class *class)
+{
+ size_t buf_size;
+ char *buf;
+ int result = 1;
+
+ if (major == 0 && minor == 0 && revision == 0)
+ {
+ *class = PRIV_SPEC_CLASS_NONE;
+ return result;
+ }
+
+ buf_size = riscv_estimate_digit (major)
+ + 1 /* '.' */
+ + riscv_estimate_digit (minor)
+ + 1; /* string terminator */
+ if (revision != 0)
+ {
+ buf_size += 1 /* '.' */
+ + riscv_estimate_digit (revision);
+ buf = xmalloc (buf_size);
+ snprintf (buf, buf_size, "%d.%d.%d", major, minor, revision);
+ }
+ else
+ {
+ buf = xmalloc (buf_size);
+ snprintf (buf, buf_size, "%d.%d", major, minor);
+ }
+
+ result = riscv_get_priv_spec_class (buf, class);
+ free (buf);
+ return result;
+}
+
+/* Get the corresponding privilege version string by giving a CSR
+ version class. */
+
+const char *
+riscv_get_priv_spec_name (enum riscv_priv_spec_class class)
+{
+ /* The first enum is PRIV_SPEC_CLASS_NONE. */
+ return priv_specs[class - 1].name;
+}