1 files changed, 37 insertions, 0 deletions
diff --git a/riscv/insns/vsm4r_vv.h b/riscv/insns/vsm4r_vv.h
new file mode 100644
index 0000000..9a18cec
--- /dev/null
+++ b/riscv/insns/vsm4r_vv.h
@@ -0,0 +1,37 @@
+// vsm4r.vv vd, vs2
+
+#include "zvksed_ext_macros.h"
+
+require_vsm4_constraints;
+
+VI_ZVK_VD_VS2_EGU32x4_NOVM_LOOP(
+  {},
+  {
+    // vd = {x0, x1,x2, x3} <- vd
+    EXTRACT_EGU32x4_WORDS_LE(vd, x0, x1, x2, x3);
+    // {rk0, rk1, rk2, rk3} <- vs2
+    EXTRACT_EGU32x4_WORDS_LE(vs2, rk0, rk1, rk2, rk3);
+
+    uint32_t B;
+    uint32_t S;
+
+    B = x1 ^ x2 ^ x3 ^ rk0;
+    S = ZVKSED_SUB_BYTES(B);
+    const uint32_t x4 = ZVKSED_ROUND(x0, S);
+
+    B = x2 ^ x3 ^ x4 ^ rk1;
+    S = ZVKSED_SUB_BYTES(B);
+    const uint32_t x5 = ZVKSED_ROUND(x1, S);
+
+    B = x3 ^ x4 ^ x5 ^ rk2;
+    S = ZVKSED_SUB_BYTES(B);
+    const uint32_t x6 = ZVKSED_ROUND(x2, S);
+
+    B = x4 ^ x5 ^ x6 ^ rk3;
+    S = ZVKSED_SUB_BYTES(B);
+    const uint32_t x7 = ZVKSED_ROUND(x3, S);
+
+    // Update the destination register.
+    SET_EGU32x4_LE(vd, x4, x5, x6, x7);
+  }
+);