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tcg/aarch64: Add support for fence

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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>
This commit is contained in:
Pranith Kumar 2016-07-14 16:20:15 -04:00 committed by Richard Henderson
parent a7d00d4eff
commit c7a59c2a92
1 changed files with 22 additions and 0 deletions
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22
tcg/aarch64/tcg-target.inc.c
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@ -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 },
};