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authorPranith Kumar <bobby.prani@gmail.com>2016-07-14 16:20:19 -0400
committerRichard Henderson <rth@twiddle.net>2016-09-16 08:12:11 -0700
commit7b4af5ee8a1336bc39714b6de47924ee71fba761 (patch)
treea4058c94fdae12adce83ad96f26b95b3e9f2a44d
parent6f0b99104a396905870edc3049310ece29b6b8d6 (diff)
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tcg/ppc: Add support for fence
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Message-Id: <20160714202026.9727-8-bobby.prani@gmail.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
-rw-r--r--tcg/ppc/tcg-target.inc.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/tcg/ppc/tcg-target.inc.c b/tcg/ppc/tcg-target.inc.c
index d79969096f..a3262cfb0c 100644
--- a/tcg/ppc/tcg-target.inc.c
+++ b/tcg/ppc/tcg-target.inc.c
@@ -469,6 +469,10 @@ 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)
@@ -1243,6 +1247,18 @@ static void tcg_out_brcond2 (TCGContext *s, const TCGArg *args,
tcg_out_bc(s, BC | BI(7, CR_EQ) | BO_COND_TRUE, arg_label(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);
+}
+
#ifdef __powerpc64__
void ppc_tb_set_jmp_target(uintptr_t jmp_addr, uintptr_t addr)
{
@@ -2453,6 +2469,10 @@ 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. */
@@ -2600,6 +2620,7 @@ static const TCGTargetOpDef ppc_op_defs[] = {
{ INDEX_op_qemu_st_i64, { "S", "S", "S", "S" } },
#endif
+ { INDEX_op_mb, { } },
{ -1 },
};