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tcg/aarch64: Add support for fence

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Backports commit c7a59c2a92592e556b9361437c9c4229917bd1e3 from qemu
This commit is contained in:
Pranith Kumar 2018-02-26 03:09:33 -05:00 committed by Lioncash
parent d49bd55f52
commit 907060b865
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GPG Key ID: 4E3C3CC1031BA9C7
1 changed files with 33 additions and 0 deletions
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33
qemu/tcg/aarch64/tcg-target.inc.c
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@ -376,6 +376,11 @@ 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)
@ -985,6 +990,29 @@ 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[] = {
DMB_ISH | DMB_LD | DMB_ST,
DMB_ISH | DMB_LD,
DMB_ISH | DMB_LD | DMB_ST,
DMB_ISH | DMB_LD | DMB_ST,
DMB_ISH | DMB_LD,
DMB_ISH | DMB_LD,
DMB_ISH | DMB_LD | DMB_ST,
DMB_ISH | DMB_LD | DMB_ST,
DMB_ISH | DMB_ST,
DMB_ISH | DMB_LD | DMB_ST,
DMB_ISH | DMB_LD | DMB_ST,
DMB_ISH | DMB_LD | DMB_ST,
DMB_ISH | DMB_LD | DMB_ST,
DMB_ISH | DMB_LD | DMB_ST,
DMB_ISH | DMB_LD | DMB_ST,
DMB_ISH | DMB_LD | DMB_ST, // 0xF
};
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)
@ -1653,6 +1681,10 @@ 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. */
@ -1777,6 +1809,7 @@ static const TCGTargetOpDef aarch64_op_defs[] = {
{ INDEX_op_muluh_i64, { "r", "r", "r" } },
{ INDEX_op_mulsh_i64, { "r", "r", "r" } },
{ INDEX_op_mb, { } },
{ -1 },
};