RISC-V: test for instruction extensions

src/crypto/randomx/tests/riscv64_zba.s

@@ -0,0 +1,9 @@
+/* RISC-V - test if the Zba extension is present */
+
+.text
+.global main
+
+main:
+    sh1add x6, x6, x7
+    li x10, 0
+    ret

src/crypto/randomx/tests/riscv64_zbb.s

@@ -0,0 +1,9 @@
+/* RISC-V - test if the Zbb extension is present */
+
+.text
+.global main
+
+main:
+    ror x6, x6, x7
+    li x10, 0
+    ret