diff options
| -rw-r--r-- | target-tilegx/translate.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/target-tilegx/translate.c b/target-tilegx/translate.c index 34d45f87b9..354f25a52b 100644 --- a/target-tilegx/translate.c +++ b/target-tilegx/translate.c @@ -2105,38 +2105,44 @@ static TileExcp decode_y2(DisasContext *dc, tilegx_bundle_bits bundle) unsigned srcbdest = get_SrcBDest_Y2(bundle); const char *mnemonic; TCGMemOp memop; + bool prefetch_nofault = false; switch (OEY2(opc, mode)) { case OEY2(LD1S_OPCODE_Y2, MODE_OPCODE_YA2): memop = MO_SB; - mnemonic = "ld1s"; + mnemonic = "ld1s"; /* prefetch_l1_fault */ goto do_load; case OEY2(LD1U_OPCODE_Y2, MODE_OPCODE_YA2): memop = MO_UB; - mnemonic = "ld1u"; + mnemonic = "ld1u"; /* prefetch, prefetch_l1 */ + prefetch_nofault = (srcbdest == TILEGX_R_ZERO); goto do_load; case OEY2(LD2S_OPCODE_Y2, MODE_OPCODE_YA2): memop = MO_TESW; - mnemonic = "ld2s"; + mnemonic = "ld2s"; /* prefetch_l2_fault */ goto do_load; case OEY2(LD2U_OPCODE_Y2, MODE_OPCODE_YA2): memop = MO_TEUW; - mnemonic = "ld2u"; + mnemonic = "ld2u"; /* prefetch_l2 */ + prefetch_nofault = (srcbdest == TILEGX_R_ZERO); goto do_load; case OEY2(LD4S_OPCODE_Y2, MODE_OPCODE_YB2): memop = MO_TESL; - mnemonic = "ld4s"; + mnemonic = "ld4s"; /* prefetch_l3_fault */ goto do_load; case OEY2(LD4U_OPCODE_Y2, MODE_OPCODE_YB2): memop = MO_TEUL; - mnemonic = "ld4u"; + mnemonic = "ld4u"; /* prefetch_l3 */ + prefetch_nofault = (srcbdest == TILEGX_R_ZERO); goto do_load; case OEY2(LD_OPCODE_Y2, MODE_OPCODE_YB2): memop = MO_TEQ; mnemonic = "ld"; do_load: - tcg_gen_qemu_ld_tl(dest_gr(dc, srcbdest), load_gr(dc, srca), - dc->mmuidx, memop); + if (!prefetch_nofault) { + tcg_gen_qemu_ld_tl(dest_gr(dc, srcbdest), load_gr(dc, srca), + dc->mmuidx, memop); + } qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s %s, %s", mnemonic, reg_names[srcbdest], reg_names[srca]); return TILEGX_EXCP_NONE; |