Add isa string support for Zfbfmin/Zvfbfmin/Zvfbfwma

riscv/isa_parser.cc

@@ -139,6 +139,8 @@ isa_parser_t::isa_parser_t(const char* str, const char *priv)
     } else if (ext_str == "zdinx") {
       extension_table[EXT_ZFINX] = true;
       extension_table[EXT_ZDINX] = true;
+    } else if (ext_str == "zfbfmin") {
+      extension_table[EXT_ZFBFMIN] = true;
     } else if (ext_str == "zfinx") {
       extension_table[EXT_ZFINX] = true;
     } else if (ext_str == "zhinx") {
@@ -232,6 +234,10 @@ isa_parser_t::isa_parser_t(const char* str, const char *priv)
       extension_table[EXT_ZICOND] = true;
     } else if (ext_str == "zihpm") {
       extension_table[EXT_ZIHPM] = true;
+    } else if (ext_str == "zvfbfmin") {
+      extension_table[EXT_ZVFBFMIN] = true;
+    } else if (ext_str == "zvfbfwma") {
+      extension_table[EXT_ZVFBFWMA] = true;
     } else if (ext_str == "sstc") {
         extension_table[EXT_SSTC] = true;
     } else if (ext_str[0] == 'x') {
@@ -279,6 +285,14 @@ isa_parser_t::isa_parser_t(const char* str, const char *priv)
     bad_isa_string(str, ("can't parse: " + std::string(p)).c_str());
   }
 
+  if (extension_table[EXT_ZFBFMIN] && !extension_table['F']) {
+    bad_isa_string(str, "'Zfbfmin' extension requires 'F' extension");
+  }
+
+  if ((extension_table[EXT_ZVFBFMIN] || extension_table[EXT_ZVFBFWMA]) && !extension_table['V']) {
+    bad_isa_string(str, "'Zvfbfmin/Zvfbfwma' extension requires 'V' extension");
+  }
+
   if (extension_table['C']) {
     extension_table[EXT_ZCA] = true;
     if (extension_table['F'] && max_xlen == 32)

riscv/isa_parser.h

@@ -49,6 +49,7 @@ typedef enum {
   EXT_SVINVAL,
   EXT_ZDINX,
   EXT_ZFA,
+  EXT_ZFBFMIN,
   EXT_ZFINX,
   EXT_ZHINX,
   EXT_ZHINXMIN,
@@ -57,6 +58,8 @@ typedef enum {
   EXT_ZICNTR,
   EXT_ZICOND,
   EXT_ZIHPM,
+  EXT_ZVFBFMIN,
+  EXT_ZVFBFWMA,
   EXT_XZBP,
   EXT_XZBS,
   EXT_XZBE,