[PATCH v4 06/18] target/s390x: Handle tec in s390_cpu_tlb_fill

[Richard Henderson]

As a step toward moving all excption handling out of mmu_translate,
copy handling of the LowCore tec value from trigger_access_exception
into s390_cpu_tlb_fill.  So far this new plumbing isn't used.

Reviewed-by: David Hildenbrand <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
 target/s390x/excp_helper.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/target/s390x/excp_helper.c b/target/s390x/excp_helper.c
index 552098be5f..ab2ed47fef 100644
--- a/target/s390x/excp_helper.c
+++ b/target/s390x/excp_helper.c
@@ -126,7 +126,7 @@ bool s390_cpu_tlb_fill(CPUState *cs, vaddr address, int 
size,
     S390CPU *cpu = S390_CPU(cs);
     CPUS390XState *env = &cpu->env;
     target_ulong vaddr, raddr;
-    uint64_t asc;
+    uint64_t asc, tec;
     int prot, fail, excp;
 
     qemu_log_mask(CPU_LOG_MMU, "%s: addr 0x%" VADDR_PRIx " rw %d mmu_idx %d\n",
@@ -162,6 +162,7 @@ bool s390_cpu_tlb_fill(CPUState *cs, vaddr address, int 
size,
                       "%s: raddr %" PRIx64 " > ram_size %" PRIx64 "\n",
                       __func__, (uint64_t)raddr, (uint64_t)ram_size);
         excp = PGM_ADDRESSING;
+        tec = 0; /* unused */
         fail = 1;
     }
 
@@ -178,6 +179,10 @@ bool s390_cpu_tlb_fill(CPUState *cs, vaddr address, int 
size,
     }
 
     if (excp) {
+        if (excp != PGM_ADDRESSING) {
+            stq_phys(env_cpu(env)->as,
+                     env->psa + offsetof(LowCore, trans_exc_code), tec);
+        }
         trigger_pgm_exception(env, excp, ILEN_AUTO);
     }
     cpu_restore_state(cs, retaddr, true);
-- 
2.17.1