diff options
Diffstat (limited to 'tcg/ppc/tcg-target.c.inc')
| -rw-r--r-- | tcg/ppc/tcg-target.c.inc | 46 |
1 files changed, 26 insertions, 20 deletions
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc index d47a9e3478..507fe6cda8 100644 --- a/tcg/ppc/tcg-target.c.inc +++ b/tcg/ppc/tcg-target.c.inc @@ -2036,6 +2036,9 @@ bool tcg_target_has_memory_bswap(MemOp memop) return aa.atom <= MO_64; } +/* We expect to use a 16-bit negative offset from ENV. */ +#define MIN_TLB_MASK_TABLE_OFS -32768 + /* * For softmmu, perform the TLB load and compare. * For useronly, perform any required alignment tests. @@ -2046,6 +2049,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h, TCGReg addrlo, TCGReg addrhi, MemOpIdx oi, bool is_ld) { + TCGType addr_type = s->addr_type; TCGLabelQemuLdst *ldst = NULL; MemOp opc = get_memop(oi); MemOp a_bits, s_bits; @@ -2071,7 +2075,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h, int mem_index = get_mmuidx(oi); int cmp_off = is_ld ? offsetof(CPUTLBEntry, addr_read) : offsetof(CPUTLBEntry, addr_write); - int fast_off = TLB_MASK_TABLE_OFS(mem_index); + int fast_off = tlb_mask_table_ofs(s, mem_index); int mask_off = fast_off + offsetof(CPUTLBDescFast, mask); int table_off = fast_off + offsetof(CPUTLBDescFast, table); @@ -2082,8 +2086,6 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h, ldst->addrhi_reg = addrhi; /* Load tlb_mask[mmu_idx] and tlb_table[mmu_idx]. */ - QEMU_BUILD_BUG_ON(TLB_MASK_TABLE_OFS(0) > 0); - QEMU_BUILD_BUG_ON(TLB_MASK_TABLE_OFS(0) < -32768); tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_AREG0, mask_off); tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP2, TCG_AREG0, table_off); @@ -2097,26 +2099,31 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h, } tcg_out32(s, AND | SAB(TCG_REG_TMP1, TCG_REG_TMP1, TCG_REG_R0)); - /* Load the (low part) TLB comparator into TMP2. */ - if (cmp_off == 0 && TCG_TARGET_REG_BITS >= TARGET_LONG_BITS) { - uint32_t lxu = (TCG_TARGET_REG_BITS == 32 || TARGET_LONG_BITS == 32 - ? LWZUX : LDUX); - tcg_out32(s, lxu | TAB(TCG_REG_TMP2, TCG_REG_TMP1, TCG_REG_TMP2)); - } else { - tcg_out32(s, ADD | TAB(TCG_REG_TMP1, TCG_REG_TMP1, TCG_REG_TMP2)); - if (TCG_TARGET_REG_BITS < TARGET_LONG_BITS) { - tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_TMP2, - TCG_REG_TMP1, cmp_off + 4 * HOST_BIG_ENDIAN); + /* + * Load the (low part) TLB comparator into TMP2. + * For 64-bit host, always load the entire 64-bit slot for simplicity. + * We will ignore the high bits with tcg_out_cmp(..., addr_type). + */ + if (TCG_TARGET_REG_BITS == 64) { + if (cmp_off == 0) { + tcg_out32(s, LDUX | TAB(TCG_REG_TMP2, TCG_REG_TMP1, TCG_REG_TMP2)); } else { - tcg_out_ld(s, TCG_TYPE_TL, TCG_REG_TMP2, TCG_REG_TMP1, cmp_off); + tcg_out32(s, ADD | TAB(TCG_REG_TMP1, TCG_REG_TMP1, TCG_REG_TMP2)); + tcg_out_ld(s, TCG_TYPE_I64, TCG_REG_TMP2, TCG_REG_TMP1, cmp_off); } + } else if (cmp_off == 0 && !HOST_BIG_ENDIAN) { + tcg_out32(s, LWZUX | TAB(TCG_REG_TMP2, TCG_REG_TMP1, TCG_REG_TMP2)); + } else { + tcg_out32(s, ADD | TAB(TCG_REG_TMP1, TCG_REG_TMP1, TCG_REG_TMP2)); + tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_TMP2, TCG_REG_TMP1, + cmp_off + 4 * HOST_BIG_ENDIAN); } /* * Load the TLB addend for use on the fast path. * Do this asap to minimize any load use delay. */ - if (TCG_TARGET_REG_BITS >= TARGET_LONG_BITS) { + if (TCG_TARGET_REG_BITS == 64 || addr_type == TCG_TYPE_I32) { tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1, offsetof(CPUTLBEntry, addend)); } @@ -2151,7 +2158,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h, } /* Mask the address for the requested alignment. */ - if (TARGET_LONG_BITS == 32) { + if (addr_type == TCG_TYPE_I32) { tcg_out_rlw(s, RLWINM, TCG_REG_R0, t, 0, (32 - a_bits) & 31, 31 - s->page_bits); } else if (a_bits == 0) { @@ -2163,7 +2170,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h, } } - if (TCG_TARGET_REG_BITS < TARGET_LONG_BITS) { + if (TCG_TARGET_REG_BITS == 32 && addr_type != TCG_TYPE_I32) { /* Low part comparison into cr7. */ tcg_out_cmp(s, TCG_COND_EQ, TCG_REG_R0, TCG_REG_TMP2, 0, 7, TCG_TYPE_I32); @@ -2183,8 +2190,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h, tcg_out32(s, CRAND | BT(7, CR_EQ) | BA(6, CR_EQ) | BB(7, CR_EQ)); } else { /* Full comparison into cr7. */ - tcg_out_cmp(s, TCG_COND_EQ, TCG_REG_R0, TCG_REG_TMP2, - 0, 7, TCG_TYPE_TL); + tcg_out_cmp(s, TCG_COND_EQ, TCG_REG_R0, TCG_REG_TMP2, 0, 7, addr_type); } /* Load a pointer into the current opcode w/conditional branch-link. */ @@ -2211,7 +2217,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h, h->base = guest_base ? TCG_GUEST_BASE_REG : 0; #endif - if (TCG_TARGET_REG_BITS > TARGET_LONG_BITS) { + if (TCG_TARGET_REG_BITS == 64 && addr_type == TCG_TYPE_I32) { /* Zero-extend the guest address for use in the host address. */ tcg_out_ext32u(s, TCG_REG_R0, addrlo); h->index = TCG_REG_R0; |