Remove full-arch situation

Author: BeMg

riscv-c-api.md

@@ -299,17 +299,12 @@ Each `TARGET-CLONES-ATTR-STRING` defines a distinguished version of the function
 The syntax of `<TARGET-CLONES-ATTR-STRING>` describes below:
 
 ```
-TARGET-CLONES-ATTR-STRING := 'arch=' EXTENSIONS-OR-FULLARCH
+TARGET-CLONES-ATTR-STRING := 'arch=' EXTENSIONS
                            | 'default'
 
-EXTENSIONS-OR-FULLARCH := <EXTENSIONS>
-                        | <FULLARCHSTR>
-
 EXTENSIONS             := <EXTENSION> ',' <EXTENSIONS>
                         | <EXTENSION>
 
-FULLARCHSTR            := <full-arch-string>
-
 EXTENSION              := <OP> <EXTENSION-NAME> <VERSION>
 
 OP                     := '+'
@@ -347,17 +342,12 @@ Each `TARGET-VERSION-ATTR-STRING` defines a distinguished version of the functio
 The syntax of `<TARGET-VERSION-ATTR-STRING>` describes below:
 
 ```
-TARGET-VERSION-ATTR-STRING := 'arch=' EXTENSIONS-OR-FULLARCH
+TARGET-VERSION-ATTR-STRING := 'arch=' EXTENSIONS
                             | 'default'
 
-EXTENSIONS-OR-FULLARCH := <EXTENSIONS>
-                        | <FULLARCHSTR>
-
 EXTENSIONS             := <EXTENSION> ',' <EXTENSIONS>
                         | <EXTENSION>
 
-FULLARCHSTR            := <full-arch-string>
-
 EXTENSION              := <OP> <EXTENSION-NAME> <VERSION>
 
 OP                     := '+'
@@ -378,7 +368,7 @@ int foo(int a)
   return a + 5;
 }
 
-__attribute__((target_version("arch=rv64gc_zbb")))
+__attribute__((target_version("arch=+zbb")))
 int foo(int a)
 {
   return a + 5;