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tcg/ppc: Add support for fence

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Backports commit 7b4af5ee8a1336bc39714b6de47924ee71fba761 from qemu
This commit is contained in:
Pranith Kumar 2018-02-26 03:18:40 -05:00 committed by Lioncash
parent 5f10101245
commit bdd9cad15c
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 21 additions and 0 deletions
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21
qemu/tcg/ppc/tcg-target.inc.c
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@ -475,6 +475,10 @@ static int tcg_target_const_match(tcg_target_long val, TCGType type,
#define STHX XO31(407)
#define STWX XO31(151)
#define EIEIO XO31(854)
#define HWSYNC XO31(598)
#define LWSYNC (HWSYNC | (1u << 21))
#define SPR(a, b) ((((a)<<5)|(b))<<11)
#define LR SPR(8, 0)
#define CTR SPR(9, 0)
@ -1249,6 +1253,18 @@ static void tcg_out_brcond2 (TCGContext *s, const TCGArg *args,
tcg_out_bc(s, BC | BI(7, CR_EQ) | BO_COND_TRUE, arg_label(s, args[5]));
}
static void tcg_out_mb(TCGContext *s, TCGArg a0)
{
uint32_t insn = HWSYNC;
a0 &= TCG_MO_ALL;
if (a0 == TCG_MO_LD_LD) {
insn = LWSYNC;
} else if (a0 == TCG_MO_ST_ST) {
insn = EIEIO;
}
tcg_out32(s, insn);
}
void ppc_tb_set_jmp_target(uintptr_t jmp_addr, uintptr_t addr)
{
tcg_insn_unit i1, i2;
@ -2444,6 +2460,10 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
tcg_out32(s, MULHD | TAB(args[0], args[1], args[2]));
break;
case INDEX_op_mb:
tcg_out_mb(s, args[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. */
@ -2591,6 +2611,7 @@ static const TCGTargetOpDef ppc_op_defs[] = {
{ INDEX_op_qemu_st_i64, { "S", "S", "S", "S" } },
#endif
{ INDEX_op_mb, { } },
{ -1 },
};