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[RFC,v2,10/13] tcg/tci: Add support for fence

Message ID 20160531183928.29406-11-bobby.prani@gmail.com
State New
Headers show

Commit Message

Pranith Kumar May 31, 2016, 6:39 p.m. UTC 
Cc: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
---
 tcg/tci/tcg-target.inc.c | 3 +++
 tci.c                    | 3 +++
 2 files changed, 6 insertions(+)
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Patch

diff --git a/tcg/tci/tcg-target.inc.c b/tcg/tci/tcg-target.inc.c
index 4e91687..a507ceb 100644
--- a/tcg/tci/tcg-target.inc.c
+++ b/tcg/tci/tcg-target.inc.c
@@ -255,6 +255,7 @@  static const TCGTargetOpDef tcg_target_op_defs[] = {
     { INDEX_op_bswap32_i32, { R, R } },
 #endif
 
+    { INDEX_op_mb, { "r" } },
     { -1 },
 };
 
@@ -798,6 +799,8 @@  static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
         }
         tcg_out_i(s, *args++);
         break;
+    case INDEX_op_mb:
+        break;
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     case INDEX_op_movi_i32: /* Always emitted via tcg_out_movi.  */
diff --git a/tci.c b/tci.c
index 7cbb39e..d35b24f 100644
--- a/tci.c
+++ b/tci.c
@@ -1230,6 +1230,9 @@  uintptr_t tcg_qemu_tb_exec(CPUArchState *env, uint8_t *tb_ptr)
                 tcg_abort();
             }
             break;
+        case INDEX_op_mb:
+            smp_mb();
+            break;
         default:
             TODO();
             break;