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authorPranith Kumar <bobby.prani@gmail.com>2016-07-14 16:20:15 -0400
committerRichard Henderson <rth@twiddle.net>2016-09-16 08:12:11 -0700
commitc7a59c2a92592e556b9361437c9c4229917bd1e3 (patch)
treec0543464cb7cba2a8598c0ef20d0c07d09544f0e /tcg
parenta7d00d4effb58889ac6df64f98ac50c9d1594149 (diff)
downloadqemu-arm-c7a59c2a92592e556b9361437c9c4229917bd1e3.tar.gz
tcg/aarch64: Add support for fence
Cc: Claudio Fontana <claudio.fontana@gmail.com> Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Message-Id: <20160714202026.9727-4-bobby.prani@gmail.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg')
-rw-r--r--tcg/aarch64/tcg-target.inc.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/tcg/aarch64/tcg-target.inc.c b/tcg/aarch64/tcg-target.inc.c
index c8374b864f..1939d3528f 100644
--- a/tcg/aarch64/tcg-target.inc.c
+++ b/tcg/aarch64/tcg-target.inc.c
@@ -372,6 +372,11 @@ typedef enum {
I3510_EOR = 0x4a000000,
I3510_EON = 0x4a200000,
I3510_ANDS = 0x6a000000,
+
+ /* System instructions. */
+ DMB_ISH = 0xd50338bf,
+ DMB_LD = 0x00000100,
+ DMB_ST = 0x00000200,
} AArch64Insn;
static inline uint32_t tcg_in32(TCGContext *s)
@@ -981,6 +986,18 @@ static inline void tcg_out_addsub2(TCGContext *s, int ext, TCGReg rl,
tcg_out_mov(s, ext, orig_rl, rl);
}
+static inline void tcg_out_mb(TCGContext *s, TCGArg a0)
+{
+ static const uint32_t sync[] = {
+ [0 ... TCG_MO_ALL] = DMB_ISH | DMB_LD | DMB_ST,
+ [TCG_MO_ST_ST] = DMB_ISH | DMB_ST,
+ [TCG_MO_LD_LD] = DMB_ISH | DMB_LD,
+ [TCG_MO_LD_ST] = DMB_ISH | DMB_LD,
+ [TCG_MO_LD_ST | TCG_MO_LD_LD] = DMB_ISH | DMB_LD,
+ };
+ tcg_out32(s, sync[a0 & TCG_MO_ALL]);
+}
+
#ifdef CONFIG_SOFTMMU
/* helper signature: helper_ret_ld_mmu(CPUState *env, target_ulong addr,
* TCGMemOpIdx oi, uintptr_t ra)
@@ -1649,6 +1666,10 @@ 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_mb:
+ tcg_out_mb(s, a0);
+ 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. */
@@ -1773,6 +1794,7 @@ static const TCGTargetOpDef aarch64_op_defs[] = {
{ INDEX_op_muluh_i64, { "r", "r", "r" } },
{ INDEX_op_mulsh_i64, { "r", "r", "r" } },
+ { INDEX_op_mb, { } },
{ -1 },
};