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target/ppc: Fix embedded memory barriers 

Memory barriers are supposed to do something on BookE systems, these
were probably just missed during MTTCG enablement, maybe no targets
support SMP. Either way, add proper BookE implementations.

Reviewed-by: Chinmay Rath <rathc@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
This commit is contained in:
Nicholas Piggin 2024-05-01 23:04:33 +10:00
parent 13f5086783
commit ab4f174bae
1 changed files with 2 additions and 2 deletions
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4
target/ppc/translate/misc-impl.c.inc
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@ -34,8 +34,7 @@ static bool trans_SYNC(DisasContext *ctx, arg_X_sync *a)
*/
if (!(ctx->insns_flags & PPC_MEM_SYNC)) {
if (ctx->insns_flags & PPC_BOOKE) {
/* msync replaces sync on 440, interpreted as nop */
/* XXX: this also catches e200 */
tcg_gen_mb(bar | TCG_BAR_SC);
return true;
}
@ -75,6 +74,7 @@ static bool trans_EIEIO(DisasContext *ctx, arg_EIEIO *a)
if (!(ctx->insns_flags & PPC_MEM_EIEIO)) {
if ((ctx->insns_flags & PPC_BOOKE) ||
(ctx->insns_flags2 & PPC2_BOOKE206)) {
tcg_gen_mb(bar | TCG_BAR_SC);
return true;
}
return false;