target/arm: Merge mte_check1, mte_checkN

The mte_check1 and mte_checkN functions are now identical.
Drop mte_check1 and rename mte_checkN to mte_check.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210416183106.1516563-7-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

5 files changed, 14 insertions, 38 deletions

diff --git a/target/arm/helper-a64.h b/target/arm/helper-a64.h
index c139fa81f9..7b706571bb 100644
--- a/target/arm/helper-a64.h
+++ b/target/arm/helper-a64.h
@@ -104,8 +104,7 @@ DEF_HELPER_FLAGS_3(autdb, TCG_CALL_NO_WG, i64, env, i64, i64)
 DEF_HELPER_FLAGS_2(xpaci, TCG_CALL_NO_RWG_SE, i64, env, i64)
 DEF_HELPER_FLAGS_2(xpacd, TCG_CALL_NO_RWG_SE, i64, env, i64)
 
-DEF_HELPER_FLAGS_3(mte_check1, TCG_CALL_NO_WG, i64, env, i32, i64)
-DEF_HELPER_FLAGS_3(mte_checkN, TCG_CALL_NO_WG, i64, env, i32, i64)
+DEF_HELPER_FLAGS_3(mte_check, TCG_CALL_NO_WG, i64, env, i32, i64)
 DEF_HELPER_FLAGS_3(mte_check_zva, TCG_CALL_NO_WG, i64, env, i32, i64)
 DEF_HELPER_FLAGS_3(irg, TCG_CALL_NO_RWG, i64, env, i64, i64)
 DEF_HELPER_FLAGS_4(addsubg, TCG_CALL_NO_RWG_SE, i64, env, i64, s32, i32)
diff --git a/target/arm/internals.h b/target/arm/internals.h
index 2c77f2d50f..af1db2cd9c 100644
--- a/target/arm/internals.h
+++ b/target/arm/internals.h
@@ -1146,10 +1146,7 @@ FIELD(MTEDESC, WRITE, 8, 1)
 FIELD(MTEDESC, SIZEM1, 9, SIMD_DATA_BITS - 9)  /* size - 1 */
 
 bool mte_probe1(CPUARMState *env, uint32_t desc, uint64_t ptr);
-uint64_t mte_check1(CPUARMState *env, uint32_t desc,
-                    uint64_t ptr, uintptr_t ra);
-uint64_t mte_checkN(CPUARMState *env, uint32_t desc,
-                    uint64_t ptr, uintptr_t ra);
+uint64_t mte_check(CPUARMState *env, uint32_t desc, uint64_t ptr, uintptr_t ra);
 
 static inline int allocation_tag_from_addr(uint64_t ptr)
 {
diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c
index 804057d3f6..c91d561ce3 100644
--- a/target/arm/mte_helper.c
+++ b/target/arm/mte_helper.c
@@ -789,8 +789,7 @@ static int mte_probe_int(CPUARMState *env, uint32_t desc, uint64_t ptr,
     return 0;
 }
 
-uint64_t mte_checkN(CPUARMState *env, uint32_t desc,
-                    uint64_t ptr, uintptr_t ra)
+uint64_t mte_check(CPUARMState *env, uint32_t desc, uint64_t ptr, uintptr_t ra)
 {
     uint64_t fault;
     int ret = mte_probe_int(env, desc, ptr, ra, &fault);
@@ -803,28 +802,9 @@ uint64_t mte_checkN(CPUARMState *env, uint32_t desc,
     return useronly_clean_ptr(ptr);
 }
 
-uint64_t HELPER(mte_checkN)(CPUARMState *env, uint32_t desc, uint64_t ptr)
+uint64_t HELPER(mte_check)(CPUARMState *env, uint32_t desc, uint64_t ptr)
 {
-    return mte_checkN(env, desc, ptr, GETPC());
-}
-
-uint64_t mte_check1(CPUARMState *env, uint32_t desc,
-                    uint64_t ptr, uintptr_t ra)
-{
-    uint64_t fault;
-    int ret = mte_probe_int(env, desc, ptr, ra, &fault);
-
-    if (unlikely(ret == 0)) {
-        mte_check_fail(env, desc, fault, ra);
-    } else if (ret < 0) {
-        return ptr;
-    }
-    return useronly_clean_ptr(ptr);
-}
-
-uint64_t HELPER(mte_check1)(CPUARMState *env, uint32_t desc, uint64_t ptr)
-{
-    return mte_check1(env, desc, ptr, GETPC());
+    return mte_check(env, desc, ptr, GETPC());
 }
 
 /*
diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c
index fd6c58f96a..b63ddfc7f9 100644
--- a/target/arm/sve_helper.c
+++ b/target/arm/sve_helper.c
@@ -4442,7 +4442,7 @@ static void sve_cont_ldst_mte_check1(SVEContLdSt *info, CPUARMState *env,
                                      uintptr_t ra)
 {
     sve_cont_ldst_mte_check_int(info, env, vg, addr, esize, msize,
-                                mtedesc, ra, mte_check1);
+                                mtedesc, ra, mte_check);
 }
 
 static void sve_cont_ldst_mte_checkN(SVEContLdSt *info, CPUARMState *env,
@@ -4451,7 +4451,7 @@ static void sve_cont_ldst_mte_checkN(SVEContLdSt *info, CPUARMState *env,
                                      uintptr_t ra)
 {
     sve_cont_ldst_mte_check_int(info, env, vg, addr, esize, msize,
-                                mtedesc, ra, mte_checkN);
+                                mtedesc, ra, mte_check);
 }
 
 
@@ -4826,7 +4826,7 @@ void sve_ldnfff1_r(CPUARMState *env, void *vg, const target_ulong addr,
     if (fault == FAULT_FIRST) {
         /* Trapping mte check for the first-fault element.  */
         if (mtedesc) {
-            mte_check1(env, mtedesc, addr + mem_off, retaddr);
+            mte_check(env, mtedesc, addr + mem_off, retaddr);
         }
 
         /*
@@ -5373,7 +5373,7 @@ void sve_ld1_z(CPUARMState *env, void *vd, uint64_t *vg, void *vm,
                                              info.attrs, BP_MEM_READ, retaddr);
                     }
                     if (mtedesc && arm_tlb_mte_tagged(&info.attrs)) {
-                        mte_check1(env, mtedesc, addr, retaddr);
+                        mte_check(env, mtedesc, addr, retaddr);
                     }
                     host_fn(&scratch, reg_off, info.host);
                 } else {
@@ -5386,7 +5386,7 @@ void sve_ld1_z(CPUARMState *env, void *vd, uint64_t *vg, void *vm,
                                              BP_MEM_READ, retaddr);
                     }
                     if (mtedesc && arm_tlb_mte_tagged(&info.attrs)) {
-                        mte_check1(env, mtedesc, addr, retaddr);
+                        mte_check(env, mtedesc, addr, retaddr);
                     }
                     tlb_fn(env, &scratch, reg_off, addr, retaddr);
                 }
@@ -5552,7 +5552,7 @@ void sve_ldff1_z(CPUARMState *env, void *vd, uint64_t *vg, void *vm,
      */
     addr = base + (off_fn(vm, reg_off) << scale);
     if (mtedesc) {
-        mte_check1(env, mtedesc, addr, retaddr);
+        mte_check(env, mtedesc, addr, retaddr);
     }
     tlb_fn(env, vd, reg_off, addr, retaddr);
 
@@ -5773,7 +5773,7 @@ void sve_st1_z(CPUARMState *env, void *vd, uint64_t *vg, void *vm,
                 }
 
                 if (mtedesc && arm_tlb_mte_tagged(&info.attrs)) {
-                    mte_check1(env, mtedesc, addr, retaddr);
+                    mte_check(env, mtedesc, addr, retaddr);
                 }
             }
             i += 1;
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 3af00ae90e..a68d5dd5d1 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -276,7 +276,7 @@ static TCGv_i64 gen_mte_check1_mmuidx(DisasContext *s, TCGv_i64 addr,
         tcg_desc = tcg_const_i32(desc);
 
         ret = new_tmp_a64(s);
-        gen_helper_mte_check1(ret, cpu_env, tcg_desc, addr);
+        gen_helper_mte_check(ret, cpu_env, tcg_desc, addr);
         tcg_temp_free_i32(tcg_desc);
 
         return ret;
@@ -310,7 +310,7 @@ TCGv_i64 gen_mte_checkN(DisasContext *s, TCGv_i64 addr, bool is_write,
         tcg_desc = tcg_const_i32(desc);
 
         ret = new_tmp_a64(s);
-        gen_helper_mte_checkN(ret, cpu_env, tcg_desc, addr);
+        gen_helper_mte_check(ret, cpu_env, tcg_desc, addr);
         tcg_temp_free_i32(tcg_desc);
 
         return ret;