Add Smcsrind/Sscsrind extensions

disasm/isa_parser.cc

@@ -286,6 +286,10 @@ isa_parser_t::isa_parser_t(const char* str, const char *priv)
     } else if (ext_str == "zvkt") {
     } else if (ext_str == "sstc") {
         extension_table[EXT_SSTC] = true;
+    } else if (ext_str == "smcsrind") {
+      extension_table[EXT_SMCSRIND] = true;
+    } else if (ext_str == "sscsrind") {
+      extension_table[EXT_SSCSRIND] = true;
     } else if (ext_str[0] == 'x') {
       extension_table['X'] = true;
       if (ext_str.size() == 1) {

riscv/isa_parser.h

@@ -77,6 +77,8 @@ typedef enum {
   EXT_SSTC,
   EXT_ZACAS,
   EXT_INTERNAL_ZFH_MOVE,
+  EXT_SMCSRIND,
+  EXT_SSCSRIND,
   NUM_ISA_EXTENSIONS
 } isa_extension_t;