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tcg/s390: Add support for fence 

Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Message-Id: <20160714202026.9727-9-bobby.prani@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Pranith Kumar 2016-07-14 16:20:20 -04:00 committed by Richard Henderson
parent 7b4af5ee8a
commit c9314d610e
1 changed files with 11 additions and 0 deletions
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11
tcg/s390/tcg-target.inc.c
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@ -343,6 +343,7 @@ static tcg_insn_unit *tb_ret_addr;
#define FACILITY_EXT_IMM (1ULL << (63 - 21))
#define FACILITY_GEN_INST_EXT (1ULL << (63 - 34))
#define FACILITY_LOAD_ON_COND (1ULL << (63 - 45))
#define FACILITY_FAST_BCR_SER FACILITY_LOAD_ON_COND
static uint64_t facilities;
@ -2169,6 +2170,15 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
tgen_deposit(s, args[0], args[2], args[3], args[4]);
break;
case INDEX_op_mb:
/* The host memory model is quite strong, we simply need to
serialize the instruction stream. */
if (args[0] & TCG_MO_ST_LD) {
tcg_out_insn(s, RR, BCR,
facilities & FACILITY_FAST_BCR_SER ? 14 : 15, 0);
}
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. */
@ -2290,6 +2300,7 @@ static const TCGTargetOpDef s390_op_defs[] = {
{ INDEX_op_movcond_i64, { "r", "r", "rC", "r", "0" } },
{ INDEX_op_deposit_i64, { "r", "0", "r" } },
{ INDEX_op_mb, { } },
{ -1 },
};