target/arm: Split {full,core}_a64_user_mem_index

Separate get_a64_user_mem_index into two separate functions, one which
returns the full ARMMMUIdx and one which returns the core mmu_idx.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20251008215613.300150-43-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c
index 43c9bfef93fcfea726ac209bfb7a80a850b2c8cc..1337e16a96be5b9b2c3129145877de427e2f2201 100644 (file)
--- a/target/arm/tcg/translate-a64.c
+++ b/target/arm/tcg/translate-a64.c
@@ -93,7 +93,7 @@ void a64_translate_init(void)
 }
 
 /*
- * Return the core mmu_idx to use for A64 load/store insns which
+ * Return the full arm mmu_idx to use for A64 load/store insns which
  * have a "unprivileged load/store" variant. Those insns access
  * EL0 if executed from an EL which has control over EL0 (usually
  * EL1) but behave like normal loads and stores if executed from
@@ -103,7 +103,7 @@ void a64_translate_init(void)
  *           normal encoding (in which case we will return the same
  *           thing as get_mem_index().
  */
-static int get_a64_user_mem_index(DisasContext *s, bool unpriv)
+static ARMMMUIdx full_a64_user_mem_index(DisasContext *s, bool unpriv)
 {
     /*
      * If AccType_UNPRIV is not used, the insn uses AccType_NORMAL,
@@ -130,7 +130,13 @@ static int get_a64_user_mem_index(DisasContext *s, bool unpriv)
             g_assert_not_reached();
         }
     }
-    return arm_to_core_mmu_idx(useridx);
+    return useridx;
+}
+
+/* Return the core mmu_idx per above. */
+static int core_a64_user_mem_index(DisasContext *s, bool unpriv)
+{
+    return arm_to_core_mmu_idx(full_a64_user_mem_index(s, unpriv));
 }
 
 static void set_btype_raw(int val)
@@ -3577,7 +3583,7 @@ static void op_addr_ldst_imm_pre(DisasContext *s, arg_ldst_imm *a,
     if (!a->p) {
         tcg_gen_addi_i64(*dirty_addr, *dirty_addr, offset);
     }
-    memidx = get_a64_user_mem_index(s, a->unpriv);
+    memidx = core_a64_user_mem_index(s, a->unpriv);
     *clean_addr = gen_mte_check1_mmuidx(s, *dirty_addr, is_store,
                                         a->w || a->rn != 31,
                                         mop, a->unpriv, memidx);
@@ -3598,7 +3604,7 @@ static bool trans_STR_i(DisasContext *s, arg_ldst_imm *a)
 {
     bool iss_sf, iss_valid = !a->w;
     TCGv_i64 clean_addr, dirty_addr, tcg_rt;
-    int memidx = get_a64_user_mem_index(s, a->unpriv);
+    int memidx = core_a64_user_mem_index(s, a->unpriv);
     MemOp mop = finalize_memop(s, a->sz + a->sign * MO_SIGN);
 
     op_addr_ldst_imm_pre(s, a, &clean_addr, &dirty_addr, a->imm, true, mop);
@@ -3616,7 +3622,7 @@ static bool trans_LDR_i(DisasContext *s, arg_ldst_imm *a)
 {
     bool iss_sf, iss_valid = !a->w;
     TCGv_i64 clean_addr, dirty_addr, tcg_rt;
-    int memidx = get_a64_user_mem_index(s, a->unpriv);
+    int memidx = core_a64_user_mem_index(s, a->unpriv);
     MemOp mop = finalize_memop(s, a->sz + a->sign * MO_SIGN);
 
     op_addr_ldst_imm_pre(s, a, &clean_addr, &dirty_addr, a->imm, false, mop);
@@ -4514,7 +4520,7 @@ static bool do_SET(DisasContext *s, arg_set *a, bool is_epilogue,
         return false;
     }
 
-    memidx = get_a64_user_mem_index(s, a->unpriv);
+    memidx = core_a64_user_mem_index(s, a->unpriv);
 
     /*
      * We pass option_a == true, matching our implementation;
@@ -4568,8 +4574,8 @@ static bool do_CPY(DisasContext *s, arg_cpy *a, bool is_epilogue, CpyFn fn)
         return false;
     }
 
-    rmemidx = get_a64_user_mem_index(s, runpriv);
-    wmemidx = get_a64_user_mem_index(s, wunpriv);
+    rmemidx = core_a64_user_mem_index(s, runpriv);
+    wmemidx = core_a64_user_mem_index(s, wunpriv);
 
     /*
      * We pass option_a == true, matching our implementation;