diff --git a/target/alpha/translate.c b/target/alpha/translate.c
index de6c0a8439..607b6c3da7 100644
--- a/target/alpha/translate.c
+++ b/target/alpha/translate.c
@@ -267,30 +267,47 @@ static inline DisasJumpType gen_invalid(DisasContext *ctx)
     return gen_excp(ctx, EXCP_OPCDEC, 0);
 }
 
-static inline void gen_qemu_ldf(TCGv t0, TCGv t1, int flags)
+static void gen_ldf(DisasContext *ctx, TCGv dest, TCGv addr)
 {
     TCGv_i32 tmp32 = tcg_temp_new_i32();
-    tcg_gen_qemu_ld_i32(tmp32, t1, flags, MO_LEUL);
-    gen_helper_memory_to_f(t0, tmp32);
+    tcg_gen_qemu_ld_i32(tmp32, addr, ctx->mem_idx, MO_LEUL);
+    gen_helper_memory_to_f(dest, tmp32);
     tcg_temp_free_i32(tmp32);
 }
 
-static inline void gen_qemu_ldg(TCGv t0, TCGv t1, int flags)
+static void gen_ldg(DisasContext *ctx, TCGv dest, TCGv addr)
 {
     TCGv tmp = tcg_temp_new();
-    tcg_gen_qemu_ld_i64(tmp, t1, flags, MO_LEQ);
-    gen_helper_memory_to_g(t0, tmp);
+    tcg_gen_qemu_ld_i64(tmp, addr, ctx->mem_idx, MO_LEQ);
+    gen_helper_memory_to_g(dest, tmp);
     tcg_temp_free(tmp);
 }
 
-static inline void gen_qemu_lds(TCGv t0, TCGv t1, int flags)
+static void gen_lds(DisasContext *ctx, TCGv dest, TCGv addr)
 {
     TCGv_i32 tmp32 = tcg_temp_new_i32();
-    tcg_gen_qemu_ld_i32(tmp32, t1, flags, MO_LEUL);
-    gen_helper_memory_to_s(t0, tmp32);
+    tcg_gen_qemu_ld_i32(tmp32, addr, ctx->mem_idx, MO_LEUL);
+    gen_helper_memory_to_s(dest, tmp32);
     tcg_temp_free_i32(tmp32);
 }
 
+static void gen_ldt(DisasContext *ctx, TCGv dest, TCGv addr)
+{
+    tcg_gen_qemu_ld_i64(dest, addr, ctx->mem_idx, MO_LEQ);
+}
+
+static void gen_load_fp(DisasContext *ctx, int ra, int rb, int32_t disp16,
+                        void (*func)(DisasContext *, TCGv, TCGv))
+{
+    /* Loads to $f31 are prefetches, which we can treat as nops. */
+    if (likely(ra != 31)) {
+        TCGv addr = tcg_temp_new();
+        tcg_gen_addi_i64(addr, load_gpr(ctx, rb), disp16);
+        func(ctx, cpu_fir[ra], addr);
+        tcg_temp_free(addr);
+    }
+}
+
 static inline void gen_qemu_ldl_l(TCGv t0, TCGv t1, int flags)
 {
     tcg_gen_qemu_ld_i64(t0, t1, flags, MO_LESL);
@@ -338,30 +355,44 @@ static inline void gen_load_mem(DisasContext *ctx,
     tcg_temp_free(tmp);
 }
 
-static inline void gen_qemu_stf(TCGv t0, TCGv t1, int flags)
+static void gen_stf(DisasContext *ctx, TCGv src, TCGv addr)
 {
     TCGv_i32 tmp32 = tcg_temp_new_i32();
-    gen_helper_f_to_memory(tmp32, t0);
-    tcg_gen_qemu_st_i32(tmp32, t1, flags, MO_LEUL);
+    gen_helper_f_to_memory(tmp32, addr);
+    tcg_gen_qemu_st_i32(tmp32, addr, ctx->mem_idx, MO_LEUL);
     tcg_temp_free_i32(tmp32);
 }
 
-static inline void gen_qemu_stg(TCGv t0, TCGv t1, int flags)
+static void gen_stg(DisasContext *ctx, TCGv src, TCGv addr)
 {
     TCGv tmp = tcg_temp_new();
-    gen_helper_g_to_memory(tmp, t0);
-    tcg_gen_qemu_st_i64(tmp, t1, flags, MO_LEQ);
+    gen_helper_g_to_memory(tmp, src);
+    tcg_gen_qemu_st_i64(tmp, addr, ctx->mem_idx, MO_LEQ);
     tcg_temp_free(tmp);
 }
 
-static inline void gen_qemu_sts(TCGv t0, TCGv t1, int flags)
+static void gen_sts(DisasContext *ctx, TCGv src, TCGv addr)
 {
     TCGv_i32 tmp32 = tcg_temp_new_i32();
-    gen_helper_s_to_memory(tmp32, t0);
-    tcg_gen_qemu_st_i32(tmp32, t1, flags, MO_LEUL);
+    gen_helper_s_to_memory(tmp32, src);
+    tcg_gen_qemu_st_i32(tmp32, addr, ctx->mem_idx, MO_LEUL);
     tcg_temp_free_i32(tmp32);
 }
 
+static void gen_stt(DisasContext *ctx, TCGv src, TCGv addr)
+{
+    tcg_gen_qemu_st_i64(src, addr, ctx->mem_idx, MO_LEQ);
+}
+
+static void gen_store_fp(DisasContext *ctx, int ra, int rb, int32_t disp16,
+                         void (*func)(DisasContext *, TCGv, TCGv))
+{
+    TCGv addr = tcg_temp_new();
+    tcg_gen_addi_i64(addr, load_gpr(ctx, rb), disp16);
+    func(ctx, load_fpr(ctx, ra), addr);
+    tcg_temp_free(addr);
+}
+
 static inline void gen_store_mem(DisasContext *ctx,
                                  void (*tcg_gen_qemu_store)(TCGv t0, TCGv t1,
                                                             int flags),
@@ -2776,42 +2807,42 @@ static DisasJumpType translate_one(DisasContext *ctx, uint32_t insn)
     case 0x20:
         /* LDF */
         REQUIRE_FEN;
-        gen_load_mem(ctx, &gen_qemu_ldf, ra, rb, disp16, 1, 0);
+        gen_load_fp(ctx, ra, rb, disp16, gen_ldf);
         break;
     case 0x21:
         /* LDG */
         REQUIRE_FEN;
-        gen_load_mem(ctx, &gen_qemu_ldg, ra, rb, disp16, 1, 0);
+        gen_load_fp(ctx, ra, rb, disp16, gen_ldg);
         break;
     case 0x22:
         /* LDS */
         REQUIRE_FEN;
-        gen_load_mem(ctx, &gen_qemu_lds, ra, rb, disp16, 1, 0);
+        gen_load_fp(ctx, ra, rb, disp16, gen_lds);
         break;
     case 0x23:
         /* LDT */
         REQUIRE_FEN;
-        gen_load_mem(ctx, &tcg_gen_qemu_ld64, ra, rb, disp16, 1, 0);
+        gen_load_fp(ctx, ra, rb, disp16, gen_ldt);
         break;
     case 0x24:
         /* STF */
         REQUIRE_FEN;
-        gen_store_mem(ctx, &gen_qemu_stf, ra, rb, disp16, 1, 0);
+        gen_store_fp(ctx, ra, rb, disp16, gen_stf);
         break;
     case 0x25:
         /* STG */
         REQUIRE_FEN;
-        gen_store_mem(ctx, &gen_qemu_stg, ra, rb, disp16, 1, 0);
+        gen_store_fp(ctx, ra, rb, disp16, gen_stg);
         break;
     case 0x26:
         /* STS */
         REQUIRE_FEN;
-        gen_store_mem(ctx, &gen_qemu_sts, ra, rb, disp16, 1, 0);
+        gen_store_fp(ctx, ra, rb, disp16, gen_sts);
         break;
     case 0x27:
         /* STT */
         REQUIRE_FEN;
-        gen_store_mem(ctx, &tcg_gen_qemu_st64, ra, rb, disp16, 1, 0);
+        gen_store_fp(ctx, ra, rb, disp16, gen_stt);
         break;
     case 0x28:
         /* LDL */
