[Qemu-devel] [PATCH v2 03/12] tcg/aarch64: Add support for fence

[Richard Henderson <rth@twiddle.net>]

Cc: Claudio Fontana <claudio.fontana@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 tcg/aarch64/tcg-target.inc.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tcg/aarch64/tcg-target.inc.c b/tcg/aarch64/tcg-target.inc.c
index 1447f7c..839569d 100644
--- a/tcg/aarch64/tcg-target.inc.c
+++ b/tcg/aarch64/tcg-target.inc.c
@@ -372,6 +372,9 @@ typedef enum {
     I3510_EOR       = 0x4a000000,
     I3510_EON       = 0x4a200000,
     I3510_ANDS      = 0x6a000000,
+
+    /* System instrutions.  */
+    DMB_ISH         = 0xd5033bbf,
 } AArch64Insn;
 
 static inline uint32_t tcg_in32(TCGContext *s)
@@ -1637,6 +1640,9 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
         tcg_out_insn(s, 3508, SMULH, TCG_TYPE_I64, a0, a1, a2);
         break;
 
+    case INDEX_op_fence:
+        tcg_out32(s, DMB_ISH);
+        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.  */
@@ -1761,6 +1767,7 @@ static const TCGTargetOpDef aarch64_op_defs[] = {
     { INDEX_op_muluh_i64, { "r", "r", "r" } },
     { INDEX_op_mulsh_i64, { "r", "r", "r" } },
 
+    { INDEX_op_fence, { } },
     { -1 },
 };
 
-- 
2.5.5