[PATCH 2/3] target/arm: Pass the entire mte descriptor to mte_check_fail

[Richard Henderson <richard.henderson@linaro.org>]

We need more information than just the mmu_idx in order
to create the proper exception syndrome.  Only change the
function signature so far.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/mte_helper.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c
index 104752041f..a40454588d 100644
--- a/target/arm/mte_helper.c
+++ b/target/arm/mte_helper.c
@@ -514,9 +514,10 @@ void HELPER(stzgm_tags)(CPUARMState *env, uint64_t ptr, uint64_t val)
 }
 
 /* Record a tag check failure.  */
-static void mte_check_fail(CPUARMState *env, int mmu_idx,
+static void mte_check_fail(CPUARMState *env, uint32_t desc,
                            uint64_t dirty_ptr, uintptr_t ra)
 {
+    int mmu_idx = FIELD_EX32(desc, MTEDESC, MIDX);
     ARMMMUIdx arm_mmu_idx = core_to_aa64_mmu_idx(mmu_idx);
     int el, reg_el, tcf, select;
     uint64_t sctlr;
@@ -639,8 +640,7 @@ uint64_t mte_check1(CPUARMState *env, uint32_t desc,
     }
 
     if (unlikely(!mte_probe1_int(env, desc, ptr, ra, bit55))) {
-        int mmu_idx = FIELD_EX32(desc, MTEDESC, MIDX);
-        mte_check_fail(env, mmu_idx, ptr, ra);
+        mte_check_fail(env, desc, ptr, ra);
     }
 
     return useronly_clean_ptr(ptr);
@@ -810,7 +810,7 @@ uint64_t mte_checkN(CPUARMState *env, uint32_t desc,
 
         fail_ofs = tag_first + n * TAG_GRANULE - ptr;
         fail_ofs = ROUND_UP(fail_ofs, esize);
-        mte_check_fail(env, mmu_idx, ptr + fail_ofs, ra);
+        mte_check_fail(env, desc, ptr + fail_ofs, ra);
     }
 
  done:
@@ -922,7 +922,7 @@ uint64_t HELPER(mte_check_zva)(CPUARMState *env, uint32_t desc, uint64_t ptr)
  fail:
     /* Locate the first nibble that differs. */
     i = ctz64(mem_tag ^ ptr_tag) >> 4;
-    mte_check_fail(env, mmu_idx, align_ptr + i * TAG_GRANULE, ra);
+    mte_check_fail(env, desc, align_ptr + i * TAG_GRANULE, ra);
 
  done:
     return useronly_clean_ptr(ptr);
-- 
2.25.1