diff --git a/target/riscv/insn_trans/trans_privileged.c.inc b/target/riscv/insn_trans/trans_privileged.c.inc
index bc5263a4e0..ecd3b8b2c9 100644
--- a/target/riscv/insn_trans/trans_privileged.c.inc
+++ b/target/riscv/insn_trans/trans_privileged.c.inc
@@ -78,7 +78,7 @@ static bool trans_sret(DisasContext *ctx, arg_sret *a)
 {
 #ifndef CONFIG_USER_ONLY
     if (has_ext(ctx, RVS)) {
-        decode_save_opc(ctx);
+        decode_save_opc(ctx, 0);
         translator_io_start(&ctx->base);
         gen_helper_sret(cpu_pc, tcg_env);
         exit_tb(ctx); /* no chaining */
@@ -95,7 +95,7 @@ static bool trans_sret(DisasContext *ctx, arg_sret *a)
 static bool trans_mret(DisasContext *ctx, arg_mret *a)
 {
 #ifndef CONFIG_USER_ONLY
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     translator_io_start(&ctx->base);
     gen_helper_mret(cpu_pc, tcg_env);
     exit_tb(ctx); /* no chaining */
@@ -109,7 +109,7 @@ static bool trans_mret(DisasContext *ctx, arg_mret *a)
 static bool trans_wfi(DisasContext *ctx, arg_wfi *a)
 {
 #ifndef CONFIG_USER_ONLY
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     gen_update_pc(ctx, ctx->cur_insn_len);
     gen_helper_wfi(tcg_env);
     return true;
@@ -121,7 +121,7 @@ static bool trans_wfi(DisasContext *ctx, arg_wfi *a)
 static bool trans_sfence_vma(DisasContext *ctx, arg_sfence_vma *a)
 {
 #ifndef CONFIG_USER_ONLY
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     gen_helper_tlb_flush(tcg_env);
     return true;
 #endif
diff --git a/target/riscv/insn_trans/trans_rva.c.inc b/target/riscv/insn_trans/trans_rva.c.inc
index 39bbf60f3c..9cf3ae8019 100644
--- a/target/riscv/insn_trans/trans_rva.c.inc
+++ b/target/riscv/insn_trans/trans_rva.c.inc
@@ -34,7 +34,7 @@ static bool gen_lr(DisasContext *ctx, arg_atomic *a, MemOp mop)
 {
     TCGv src1;
 
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     src1 = get_address(ctx, a->rs1, 0);
     if (a->rl) {
         tcg_gen_mb(TCG_MO_ALL | TCG_BAR_STRL);
@@ -61,7 +61,7 @@ static bool gen_sc(DisasContext *ctx, arg_atomic *a, MemOp mop)
     TCGLabel *l1 = gen_new_label();
     TCGLabel *l2 = gen_new_label();
 
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     src1 = get_address(ctx, a->rs1, 0);
     tcg_gen_brcond_tl(TCG_COND_NE, load_res, src1, l1);
 
diff --git a/target/riscv/insn_trans/trans_rvd.c.inc b/target/riscv/insn_trans/trans_rvd.c.inc
index 1f5fac65a2..d779ec75c7 100644
--- a/target/riscv/insn_trans/trans_rvd.c.inc
+++ b/target/riscv/insn_trans/trans_rvd.c.inc
@@ -51,7 +51,7 @@ static bool trans_fld(DisasContext *ctx, arg_fld *a)
         memop |= MO_ATOM_WITHIN16;
     }
 
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     addr = get_address(ctx, a->rs1, a->imm);
     tcg_gen_qemu_ld_i64(cpu_fpr[a->rd], addr, ctx->mem_idx, memop);
 
@@ -71,7 +71,7 @@ static bool trans_fsd(DisasContext *ctx, arg_fsd *a)
         memop |= MO_ATOM_WITHIN16;
     }
 
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     addr = get_address(ctx, a->rs1, a->imm);
     tcg_gen_qemu_st_i64(cpu_fpr[a->rs2], addr, ctx->mem_idx, memop);
     return true;
diff --git a/target/riscv/insn_trans/trans_rvf.c.inc b/target/riscv/insn_trans/trans_rvf.c.inc
index f771aa1939..084c184e65 100644
--- a/target/riscv/insn_trans/trans_rvf.c.inc
+++ b/target/riscv/insn_trans/trans_rvf.c.inc
@@ -52,7 +52,7 @@ static bool trans_flw(DisasContext *ctx, arg_flw *a)
         memop |= MO_ATOM_WITHIN16;
     }
 
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     addr = get_address(ctx, a->rs1, a->imm);
     dest = cpu_fpr[a->rd];
     tcg_gen_qemu_ld_i64(dest, addr, ctx->mem_idx, memop);
@@ -74,7 +74,7 @@ static bool trans_fsw(DisasContext *ctx, arg_fsw *a)
         memop |= MO_ATOM_WITHIN16;
     }
 
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     addr = get_address(ctx, a->rs1, a->imm);
     tcg_gen_qemu_st_i64(cpu_fpr[a->rs2], addr, ctx->mem_idx, memop);
     return true;
diff --git a/target/riscv/insn_trans/trans_rvh.c.inc b/target/riscv/insn_trans/trans_rvh.c.inc
index aa9d41c18c..03c6694430 100644
--- a/target/riscv/insn_trans/trans_rvh.c.inc
+++ b/target/riscv/insn_trans/trans_rvh.c.inc
@@ -44,7 +44,7 @@ static bool do_hlv(DisasContext *ctx, arg_r2 *a,
     TCGv dest = dest_gpr(ctx, a->rd);
     TCGv addr = get_gpr(ctx, a->rs1, EXT_NONE);
 
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     func(dest, tcg_env, addr);
     gen_set_gpr(ctx, a->rd, dest);
     return true;
@@ -56,7 +56,7 @@ static bool do_hsv(DisasContext *ctx, arg_r2_s *a,
     TCGv addr = get_gpr(ctx, a->rs1, EXT_NONE);
     TCGv data = get_gpr(ctx, a->rs2, EXT_NONE);
 
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     func(tcg_env, addr, data);
     return true;
 }
@@ -147,7 +147,7 @@ static bool trans_hfence_gvma(DisasContext *ctx, arg_sfence_vma *a)
 {
     REQUIRE_EXT(ctx, RVH);
 #ifndef CONFIG_USER_ONLY
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     gen_helper_hyp_gvma_tlb_flush(tcg_env);
     return true;
 #endif
@@ -158,7 +158,7 @@ static bool trans_hfence_vvma(DisasContext *ctx, arg_sfence_vma *a)
 {
     REQUIRE_EXT(ctx, RVH);
 #ifndef CONFIG_USER_ONLY
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     gen_helper_hyp_tlb_flush(tcg_env);
     return true;
 #endif
diff --git a/target/riscv/insn_trans/trans_rvi.c.inc b/target/riscv/insn_trans/trans_rvi.c.inc
index b427f3a939..a619ea7c0e 100644
--- a/target/riscv/insn_trans/trans_rvi.c.inc
+++ b/target/riscv/insn_trans/trans_rvi.c.inc
@@ -326,7 +326,7 @@ static bool gen_load(DisasContext *ctx, arg_lb *a, MemOp memop)
     if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
         memop |= MO_ATOM_WITHIN16;
     }
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     if (get_xl(ctx) == MXL_RV128) {
         out = gen_load_i128(ctx, a, memop);
     } else {
@@ -427,7 +427,7 @@ static bool gen_store(DisasContext *ctx, arg_sb *a, MemOp memop)
     if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
         memop |= MO_ATOM_WITHIN16;
     }
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     if (get_xl(ctx) == MXL_RV128) {
         return gen_store_i128(ctx, a, memop);
     } else {
@@ -889,7 +889,7 @@ static bool trans_fence_i(DisasContext *ctx, arg_fence_i *a)
 static bool do_csr_post(DisasContext *ctx)
 {
     /* The helper may raise ILLEGAL_INSN -- record binv for unwind. */
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     /* We may have changed important cpu state -- exit to main loop. */
     gen_update_pc(ctx, ctx->cur_insn_len);
     exit_tb(ctx);
diff --git a/target/riscv/insn_trans/trans_rvvk.c.inc b/target/riscv/insn_trans/trans_rvvk.c.inc
index ae1f40174a..27bf3f0b68 100644
--- a/target/riscv/insn_trans/trans_rvvk.c.inc
+++ b/target/riscv/insn_trans/trans_rvvk.c.inc
@@ -249,7 +249,7 @@ GEN_OPIVI_WIDEN_TRANS(vwsll_vi, IMM_ZX, vwsll_vx, vwsll_vx_check)
                                                                               \
             if (!s->vstart_eq_zero || !s->vl_eq_vlmax) {                      \
                 /* save opcode for unwinding in case we throw an exception */ \
-                decode_save_opc(s);                                           \
+                decode_save_opc(s, 0);                                        \
                 egs = tcg_constant_i32(EGS);                                  \
                 gen_helper_egs_check(egs, tcg_env);                           \
             }                                                                 \
@@ -322,7 +322,7 @@ GEN_V_UNMASKED_TRANS(vaesem_vs, vaes_check_vs, ZVKNED_EGS)
                                                                               \
             if (!s->vstart_eq_zero || !s->vl_eq_vlmax) {                      \
                 /* save opcode for unwinding in case we throw an exception */ \
-                decode_save_opc(s);                                           \
+                decode_save_opc(s, 0);                                        \
                 egs = tcg_constant_i32(EGS);                                  \
                 gen_helper_egs_check(egs, tcg_env);                           \
             }                                                                 \
@@ -389,7 +389,7 @@ GEN_VI_UNMASKED_TRANS(vaeskf2_vi, vaeskf2_check, ZVKNED_EGS)
                                                                               \
             if (!s->vstart_eq_zero || !s->vl_eq_vlmax) {                      \
                 /* save opcode for unwinding in case we throw an exception */ \
-                decode_save_opc(s);                                           \
+                decode_save_opc(s, 0);                                        \
                 egs = tcg_constant_i32(EGS);                                  \
                 gen_helper_egs_check(egs, tcg_env);                           \
             }                                                                 \
@@ -440,7 +440,7 @@ static bool trans_vsha2cl_vv(DisasContext *s, arg_rmrr *a)
 
         if (!s->vstart_eq_zero || !s->vl_eq_vlmax) {
             /* save opcode for unwinding in case we throw an exception */
-            decode_save_opc(s);
+            decode_save_opc(s, 0);
             egs = tcg_constant_i32(ZVKNH_EGS);
             gen_helper_egs_check(egs, tcg_env);
         }
@@ -471,7 +471,7 @@ static bool trans_vsha2ch_vv(DisasContext *s, arg_rmrr *a)
 
         if (!s->vstart_eq_zero || !s->vl_eq_vlmax) {
             /* save opcode for unwinding in case we throw an exception */
-            decode_save_opc(s);
+            decode_save_opc(s, 0);
             egs = tcg_constant_i32(ZVKNH_EGS);
             gen_helper_egs_check(egs, tcg_env);
         }
diff --git a/target/riscv/insn_trans/trans_rvzacas.c.inc b/target/riscv/insn_trans/trans_rvzacas.c.inc
index fcced99fc7..15e688a033 100644
--- a/target/riscv/insn_trans/trans_rvzacas.c.inc
+++ b/target/riscv/insn_trans/trans_rvzacas.c.inc
@@ -76,7 +76,7 @@ static bool gen_cmpxchg64(DisasContext *ctx, arg_atomic *a, MemOp mop)
     TCGv src1 = get_address(ctx, a->rs1, 0);
     TCGv_i64 src2 = get_gpr_pair(ctx, a->rs2);
 
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, RISCV_UW2_ALWAYS_STORE_AMO);
     tcg_gen_atomic_cmpxchg_i64(dest, src1, dest, src2, ctx->mem_idx, mop);
 
     gen_set_gpr_pair(ctx, a->rd, dest);
@@ -121,7 +121,7 @@ static bool trans_amocas_q(DisasContext *ctx, arg_amocas_q *a)
 
     tcg_gen_concat_i64_i128(src2, src2l, src2h);
     tcg_gen_concat_i64_i128(dest, destl, desth);
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, RISCV_UW2_ALWAYS_STORE_AMO);
     tcg_gen_atomic_cmpxchg_i128(dest, src1, dest, src2, ctx->mem_idx,
                                 (MO_ALIGN | MO_TEUO));
 
diff --git a/target/riscv/insn_trans/trans_rvzfh.c.inc b/target/riscv/insn_trans/trans_rvzfh.c.inc
index 1eb458b491..bece48e600 100644
--- a/target/riscv/insn_trans/trans_rvzfh.c.inc
+++ b/target/riscv/insn_trans/trans_rvzfh.c.inc
@@ -48,7 +48,7 @@ static bool trans_flh(DisasContext *ctx, arg_flh *a)
     REQUIRE_FPU;
     REQUIRE_ZFHMIN_OR_ZFBFMIN(ctx);
 
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     t0 = get_gpr(ctx, a->rs1, EXT_NONE);
     if (a->imm) {
         TCGv temp = tcg_temp_new();
@@ -71,7 +71,7 @@ static bool trans_fsh(DisasContext *ctx, arg_fsh *a)
     REQUIRE_FPU;
     REQUIRE_ZFHMIN_OR_ZFBFMIN(ctx);
 
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     t0 = get_gpr(ctx, a->rs1, EXT_NONE);
     if (a->imm) {
         TCGv temp = tcg_temp_new();
diff --git a/target/riscv/insn_trans/trans_svinval.c.inc b/target/riscv/insn_trans/trans_svinval.c.inc
index 0f692a1088..a06c3b214f 100644
--- a/target/riscv/insn_trans/trans_svinval.c.inc
+++ b/target/riscv/insn_trans/trans_svinval.c.inc
@@ -28,7 +28,7 @@ static bool trans_sinval_vma(DisasContext *ctx, arg_sinval_vma *a)
     /* Do the same as sfence.vma currently */
     REQUIRE_EXT(ctx, RVS);
 #ifndef CONFIG_USER_ONLY
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     gen_helper_tlb_flush(tcg_env);
     return true;
 #endif
@@ -57,7 +57,7 @@ static bool trans_hinval_vvma(DisasContext *ctx, arg_hinval_vvma *a)
     /* Do the same as hfence.vvma currently */
     REQUIRE_EXT(ctx, RVH);
 #ifndef CONFIG_USER_ONLY
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     gen_helper_hyp_tlb_flush(tcg_env);
     return true;
 #endif
@@ -70,7 +70,7 @@ static bool trans_hinval_gvma(DisasContext *ctx, arg_hinval_gvma *a)
     /* Do the same as hfence.gvma currently */
     REQUIRE_EXT(ctx, RVH);
 #ifndef CONFIG_USER_ONLY
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     gen_helper_hyp_gvma_tlb_flush(tcg_env);
     return true;
 #endif
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 16fff70dac..9609916807 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -209,11 +209,12 @@ static void gen_check_nanbox_s(TCGv_i64 out, TCGv_i64 in)
     tcg_gen_movcond_i64(TCG_COND_GEU, out, in, t_max, in, t_nan);
 }
 
-static void decode_save_opc(DisasContext *ctx)
+static void decode_save_opc(DisasContext *ctx, target_ulong excp_uw2)
 {
     assert(!ctx->insn_start_updated);
     ctx->insn_start_updated = true;
     tcg_set_insn_start_param(ctx->base.insn_start, 1, ctx->opcode);
+    tcg_set_insn_start_param(ctx->base.insn_start, 2, excp_uw2);
 }
 
 static void gen_pc_plus_diff(TCGv target, DisasContext *ctx,
@@ -699,7 +700,7 @@ static void gen_set_rm(DisasContext *ctx, int rm)
     }
 
     /* The helper may raise ILLEGAL_INSN -- record binv for unwind. */
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     gen_helper_set_rounding_mode(tcg_env, tcg_constant_i32(rm));
 }
 
@@ -712,7 +713,7 @@ static void gen_set_rm_chkfrm(DisasContext *ctx, int rm)
     ctx->frm_valid = true;
 
     /* The helper may raise ILLEGAL_INSN -- record binv for unwind. */
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     gen_helper_set_rounding_mode_chkfrm(tcg_env, tcg_constant_i32(rm));
 }
 
@@ -1096,7 +1097,7 @@ static bool gen_amo(DisasContext *ctx, arg_atomic *a,
         mop |= MO_ALIGN;
     }
 
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, RISCV_UW2_ALWAYS_STORE_AMO);
     src1 = get_address(ctx, a->rs1, 0);
     func(dest, src1, src2, ctx->mem_idx, mop);
 
@@ -1110,7 +1111,7 @@ static bool gen_cmpxchg(DisasContext *ctx, arg_atomic *a, MemOp mop)
     TCGv src1 = get_address(ctx, a->rs1, 0);
     TCGv src2 = get_gpr(ctx, a->rs2, EXT_NONE);
 
-    decode_save_opc(ctx);
+    decode_save_opc(ctx, 0);
     tcg_gen_atomic_cmpxchg_tl(dest, src1, dest, src2, ctx->mem_idx, mop);
 
     gen_set_gpr(ctx, a->rd, dest);
