diff --git a/qemu/target/riscv/insn32.decode b/qemu/target/riscv/insn32.decode
index 977b1b10..e53944bf 100644
--- a/qemu/target/riscv/insn32.decode
+++ b/qemu/target/riscv/insn32.decode
@@ -92,3 +92,13 @@ csrrc    ............     ..... 011 ..... 1110011 @csr
 csrrwi   ............     ..... 101 ..... 1110011 @csr
 csrrsi   ............     ..... 110 ..... 1110011 @csr
 csrrci   ............     ..... 111 ..... 1110011 @csr
+
+# *** RV32M Standard Extension ***
+mul      0000001 .....  ..... 000 ..... 0110011 @r
+mulh     0000001 .....  ..... 001 ..... 0110011 @r
+mulhsu   0000001 .....  ..... 010 ..... 0110011 @r
+mulhu    0000001 .....  ..... 011 ..... 0110011 @r
+div      0000001 .....  ..... 100 ..... 0110011 @r
+divu     0000001 .....  ..... 101 ..... 0110011 @r
+rem      0000001 .....  ..... 110 ..... 0110011 @r
+remu     0000001 .....  ..... 111 ..... 0110011 @r
diff --git a/qemu/target/riscv/translate.c b/qemu/target/riscv/translate.c
index e3d90643..0c95076e 100644
--- a/qemu/target/riscv/translate.c
+++ b/qemu/target/riscv/translate.c
@@ -1911,11 +1911,18 @@ static void decode_RV32_64C(DisasContext *ctx)
 EX_SH(1)
 EX_SH(12)
 
+#define REQUIRE_EXT(ctx, ext) do { \
+    if (!has_ext(ctx, ext)) {      \
+        return false;              \
+    }                              \
+} while (0)
+
 bool decode_insn32(DisasContext *ctx, uint32_t insn);
 /* Include the auto-generated decoder for 32 bit insn */
 #include "decode_insn32.inc.c"
 /* Include insn module translation function */
 #include "insn_trans/trans_rvi.inc.c"
+#include "insn_trans/trans_rvm.inc.c"
 
 static void decode_RV32_64G(DisasContext *ctx)
 {
@@ -1937,15 +1944,6 @@ static void decode_RV32_64G(DisasContext *ctx)
     imm = GET_IMM(ctx->opcode);
 
     switch (op) {
-    case OPC_RISC_ARITH:
-#if defined(TARGET_RISCV64)
-    case OPC_RISC_ARITH_W:
-#endif
-        if (rd == 0) {
-            break; /* NOP */
-        }
-        gen_arith(ctx, MASK_OP_ARITH(ctx->opcode), rd, rs1, rs2);
-        break;
     case OPC_RISC_FP_LOAD:
         gen_fp_load(ctx, MASK_OP_FP_LOAD(ctx->opcode), rd, rs1, imm);
         break;