[Qemu-arm] [RFC v2 PATCH 11/13] target-arm: Generate fences in ARMv7 frontend

[Pranith Kumar]

Signed-off-by: Pranith Kumar <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
 target-arm/translate.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/target-arm/translate.c b/target-arm/translate.c
index c946c0e..e1b16c0 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -7980,9 +7980,11 @@ static void disas_arm_insn(DisasContext *s, unsigned int 
insn)
                 gen_clrex(s);
                 return;
             case 4: /* dsb */
+                ARCH(7);
+                return;
             case 5: /* dmb */
                 ARCH(7);
-                /* We don't emulate caches so these are a no-op.  */
+                tcg_gen_mb(TCG_MB_FULL);
                 return;
             case 6: /* isb */
                 /* We need to break the TB after this insn to execute
@@ -10330,8 +10332,9 @@ static int disas_thumb2_insn(CPUARMState *env, 
DisasContext *s, uint16_t insn_hw
                             gen_clrex(s);
                             break;
                         case 4: /* dsb */
+                            break;
                         case 5: /* dmb */
-                            /* These execute as NOPs.  */
+                            tcg_gen_mb(TCG_MB_FULL);
                             break;
                         case 6: /* isb */
                             /* We need to break the TB after this insn
-- 
2.8.3