diff options
Diffstat (limited to 'tcg/ppc/tcg-target.inc.c')
| -rw-r--r-- | tcg/ppc/tcg-target.inc.c | 97 |
1 files changed, 54 insertions, 43 deletions
diff --git a/tcg/ppc/tcg-target.inc.c b/tcg/ppc/tcg-target.inc.c index 8c1cfdd..773690f 100644 --- a/tcg/ppc/tcg-target.inc.c +++ b/tcg/ppc/tcg-target.inc.c @@ -327,6 +327,7 @@ static int tcg_target_const_match(tcg_target_long val, TCGType type, #define LHZ OPCD( 40) #define LHA OPCD( 42) #define LWZ OPCD( 32) +#define LWZUX XO31( 55) #define STB OPCD( 38) #define STH OPCD( 44) #define STW OPCD( 36) @@ -338,6 +339,7 @@ static int tcg_target_const_match(tcg_target_long val, TCGType type, #define LD XO58( 0) #define LDX XO31( 21) #define LDU XO58( 1) +#define LDUX XO31( 53) #define LWA XO58( 2) #define LWAX XO31(341) @@ -1503,6 +1505,10 @@ static void * const qemu_st_helpers[16] = { [MO_BEQ] = helper_be_stq_mmu, }; +/* We expect tlb_mask to be before tlb_table. */ +QEMU_BUILD_BUG_ON(offsetof(CPUArchState, tlb_table) < + offsetof(CPUArchState, tlb_mask)); + /* Perform the TLB load and compare. Places the result of the comparison in CR7, loads the addend of the TLB into R3, and returns the register containing the guest address (zero-extended into R4). Clobbers R0 and R2. */ @@ -1513,61 +1519,63 @@ static TCGReg tcg_out_tlb_read(TCGContext *s, TCGMemOp opc, { int cmp_off = (is_read - ? offsetof(CPUArchState, tlb_table[mem_index][0].addr_read) - : offsetof(CPUArchState, tlb_table[mem_index][0].addr_write)); - int add_off = offsetof(CPUArchState, tlb_table[mem_index][0].addend); - TCGReg base = TCG_AREG0; + ? offsetof(CPUTLBEntry, addr_read) + : offsetof(CPUTLBEntry, addr_write)); + int mask_off = offsetof(CPUArchState, tlb_mask[mem_index]); + int table_off = offsetof(CPUArchState, tlb_table[mem_index]); + TCGReg mask_base = TCG_AREG0, table_base = TCG_AREG0; unsigned s_bits = opc & MO_SIZE; unsigned a_bits = get_alignment_bits(opc); + if (table_off > 0x7fff) { + int mask_hi = mask_off - (int16_t)mask_off; + int table_hi = table_off - (int16_t)table_off; + + table_base = TCG_REG_R4; + if (mask_hi == table_hi) { + mask_base = table_base; + } else if (mask_hi) { + mask_base = TCG_REG_R3; + tcg_out32(s, ADDIS | TAI(mask_base, TCG_AREG0, mask_hi >> 16)); + } + tcg_out32(s, ADDIS | TAI(table_base, TCG_AREG0, table_hi >> 16)); + mask_off -= mask_hi; + table_off -= table_hi; + } + + /* Load tlb_mask[mmu_idx] and tlb_table[mmu_idx]. */ + tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R3, mask_base, mask_off); + tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R4, table_base, table_off); + /* Extract the page index, shifted into place for tlb index. */ - if (TCG_TARGET_REG_BITS == 64) { - if (TARGET_LONG_BITS == 32) { - /* Zero-extend the address into a place helpful for further use. */ - tcg_out_ext32u(s, TCG_REG_R4, addrlo); - addrlo = TCG_REG_R4; - } else { - tcg_out_rld(s, RLDICL, TCG_REG_R3, addrlo, - 64 - TARGET_PAGE_BITS, 64 - CPU_TLB_BITS); - } - } - - /* Compensate for very large offsets. */ - if (add_off >= 0x8000) { - int low = (int16_t)cmp_off; - int high = cmp_off - low; - assert((high & 0xffff) == 0); - assert(cmp_off - high == (int16_t)(cmp_off - high)); - assert(add_off - high == (int16_t)(add_off - high)); - tcg_out32(s, ADDIS | TAI(TCG_REG_TMP1, base, high >> 16)); - base = TCG_REG_TMP1; - cmp_off -= high; - add_off -= high; - } - - /* Extraction and shifting, part 2. */ - if (TCG_TARGET_REG_BITS == 32 || TARGET_LONG_BITS == 32) { - tcg_out_rlw(s, RLWINM, TCG_REG_R3, addrlo, - 32 - (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS), - 32 - (CPU_TLB_BITS + CPU_TLB_ENTRY_BITS), - 31 - CPU_TLB_ENTRY_BITS); + if (TCG_TARGET_REG_BITS == 32) { + tcg_out_shri32(s, TCG_REG_TMP1, addrlo, + TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); } else { - tcg_out_shli64(s, TCG_REG_R3, TCG_REG_R3, CPU_TLB_ENTRY_BITS); + tcg_out_shri64(s, TCG_REG_TMP1, addrlo, + TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); } + tcg_out32(s, AND | SAB(TCG_REG_R3, TCG_REG_R3, TCG_REG_TMP1)); - tcg_out32(s, ADD | TAB(TCG_REG_R3, TCG_REG_R3, base)); - - /* Load the tlb comparator. */ - if (TCG_TARGET_REG_BITS < TARGET_LONG_BITS) { - tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_R4, TCG_REG_R3, cmp_off); - tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_TMP1, TCG_REG_R3, cmp_off + 4); + /* Load the TLB comparator. */ + 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_TMP1, TCG_REG_R3, TCG_REG_R4)); } else { - tcg_out_ld(s, TCG_TYPE_TL, TCG_REG_TMP1, TCG_REG_R3, cmp_off); + tcg_out32(s, ADD | TAB(TCG_REG_R3, TCG_REG_R3, TCG_REG_R4)); + if (TCG_TARGET_REG_BITS < TARGET_LONG_BITS) { + tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_TMP1, TCG_REG_R3, cmp_off + 4); + tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_R4, TCG_REG_R3, cmp_off); + } else { + tcg_out_ld(s, TCG_TYPE_TL, TCG_REG_TMP1, TCG_REG_R3, cmp_off); + } } /* Load the TLB addend for use on the fast path. Do this asap to minimize any load use delay. */ - tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R3, TCG_REG_R3, add_off); + tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R3, TCG_REG_R3, + offsetof(CPUTLBEntry, addend)); /* Clear the non-page, non-alignment bits from the address */ if (TCG_TARGET_REG_BITS == 32) { @@ -1600,6 +1608,9 @@ static TCGReg tcg_out_tlb_read(TCGContext *s, TCGMemOp opc, if (TARGET_LONG_BITS == 32) { tcg_out_rlw(s, RLWINM, TCG_REG_R0, t, 0, (32 - a_bits) & 31, 31 - TARGET_PAGE_BITS); + /* Zero-extend the address for use in the final address. */ + tcg_out_ext32u(s, TCG_REG_R4, addrlo); + addrlo = TCG_REG_R4; } else if (a_bits == 0) { tcg_out_rld(s, RLDICR, TCG_REG_R0, t, 0, 63 - TARGET_PAGE_BITS); } else { |