diff options
Diffstat (limited to 'tcg/mips/tcg-target.c')
| -rw-r--r-- | tcg/mips/tcg-target.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/tcg/mips/tcg-target.c b/tcg/mips/tcg-target.c index c0ce520228..38c968220b 100644 --- a/tcg/mips/tcg-target.c +++ b/tcg/mips/tcg-target.c @@ -962,30 +962,34 @@ static void tcg_out_tlb_load(TCGContext *s, TCGReg base, TCGReg addrl, add_off -= 0x7ff0; } - /* Load the tlb comparator. */ - if (TARGET_LONG_BITS == 64) { - tcg_out_opc_imm(s, OPC_LW, TCG_TMP0, TCG_REG_A0, cmp_off + LO_OFF); - tcg_out_opc_imm(s, OPC_LW, base, TCG_REG_A0, cmp_off + HI_OFF); - } else { - tcg_out_opc_imm(s, OPC_LW, TCG_TMP0, TCG_REG_A0, cmp_off); - } + /* Load the (low half) tlb comparator. */ + tcg_out_opc_imm(s, OPC_LW, TCG_TMP0, TCG_REG_A0, + cmp_off + (TARGET_LONG_BITS == 64 ? LO_OFF : 0)); /* Mask the page bits, keeping the alignment bits to compare against. - In between, load the tlb addend for the fast path. */ + In between on 32-bit targets, load the tlb addend for the fast path. */ tcg_out_movi(s, TCG_TYPE_I32, TCG_TMP1, TARGET_PAGE_MASK | ((1 << s_bits) - 1)); - tcg_out_opc_imm(s, OPC_LW, TCG_REG_A0, TCG_REG_A0, add_off); + if (TARGET_LONG_BITS == 32) { + tcg_out_opc_imm(s, OPC_LW, TCG_REG_A0, TCG_REG_A0, add_off); + } tcg_out_opc_reg(s, OPC_AND, TCG_TMP1, TCG_TMP1, addrl); label_ptr[0] = s->code_ptr; tcg_out_opc_br(s, OPC_BNE, TCG_TMP1, TCG_TMP0); + /* Load and test the high half tlb comparator. */ if (TARGET_LONG_BITS == 64) { /* delay slot */ - tcg_out_nop(s); + tcg_out_opc_imm(s, OPC_LW, TCG_TMP0, TCG_REG_A0, cmp_off + HI_OFF); + + /* Load the tlb addend for the fast path. We can't do it earlier with + 64-bit targets or we'll clobber a0 before reading the high half tlb + comparator. */ + tcg_out_opc_imm(s, OPC_LW, TCG_REG_A0, TCG_REG_A0, add_off); label_ptr[1] = s->code_ptr; - tcg_out_opc_br(s, OPC_BNE, addrh, base); + tcg_out_opc_br(s, OPC_BNE, addrh, TCG_TMP0); } /* delay slot */ |