cf7d6b8e98
The INDEX_op_goto_tb opcode needs no register allocation. Split out a dedicated helper function for it. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
1789 lines
50 KiB
C++
1789 lines
50 KiB
C++
/*
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* Tiny Code Generator for QEMU
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*
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* Copyright (c) 2021 WANG Xuerui <git@xen0n.name>
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*
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* Based on tcg/riscv/tcg-target.c.inc
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*
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* Copyright (c) 2018 SiFive, Inc
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* Copyright (c) 2008-2009 Arnaud Patard <arnaud.patard@rtp-net.org>
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* Copyright (c) 2009 Aurelien Jarno <aurelien@aurel32.net>
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* Copyright (c) 2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "../tcg-ldst.c.inc"
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#ifdef CONFIG_DEBUG_TCG
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static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
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"zero",
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"ra",
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"tp",
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"sp",
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"a0",
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"a1",
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"a2",
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"a3",
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"a4",
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"a5",
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"a6",
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"a7",
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"t0",
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"t1",
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"t2",
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"t3",
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"t4",
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"t5",
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"t6",
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"t7",
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"t8",
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"r21", /* reserved in the LP64* ABI, hence no ABI name */
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"s9",
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"s0",
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"s1",
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"s2",
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"s3",
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"s4",
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"s5",
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"s6",
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"s7",
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"s8"
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};
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#endif
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static const int tcg_target_reg_alloc_order[] = {
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/* Registers preserved across calls */
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/* TCG_REG_S0 reserved for TCG_AREG0 */
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TCG_REG_S1,
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TCG_REG_S2,
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TCG_REG_S3,
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TCG_REG_S4,
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TCG_REG_S5,
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TCG_REG_S6,
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TCG_REG_S7,
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TCG_REG_S8,
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TCG_REG_S9,
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/* Registers (potentially) clobbered across calls */
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TCG_REG_T0,
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TCG_REG_T1,
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TCG_REG_T2,
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TCG_REG_T3,
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TCG_REG_T4,
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TCG_REG_T5,
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TCG_REG_T6,
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TCG_REG_T7,
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TCG_REG_T8,
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/* Argument registers, opposite order of allocation. */
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TCG_REG_A7,
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TCG_REG_A6,
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TCG_REG_A5,
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TCG_REG_A4,
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TCG_REG_A3,
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TCG_REG_A2,
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TCG_REG_A1,
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TCG_REG_A0,
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};
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static const int tcg_target_call_iarg_regs[] = {
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TCG_REG_A0,
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TCG_REG_A1,
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TCG_REG_A2,
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TCG_REG_A3,
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TCG_REG_A4,
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TCG_REG_A5,
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TCG_REG_A6,
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TCG_REG_A7,
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};
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static const int tcg_target_call_oarg_regs[] = {
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TCG_REG_A0,
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TCG_REG_A1,
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};
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#ifndef CONFIG_SOFTMMU
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#define USE_GUEST_BASE (guest_base != 0)
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#define TCG_GUEST_BASE_REG TCG_REG_S1
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#endif
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#define TCG_CT_CONST_ZERO 0x100
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#define TCG_CT_CONST_S12 0x200
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#define TCG_CT_CONST_N12 0x400
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#define TCG_CT_CONST_U12 0x800
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#define TCG_CT_CONST_C12 0x1000
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#define TCG_CT_CONST_WSZ 0x2000
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#define ALL_GENERAL_REGS MAKE_64BIT_MASK(0, 32)
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/*
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* For softmmu, we need to avoid conflicts with the first 5
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* argument registers to call the helper. Some of these are
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* also used for the tlb lookup.
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*/
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#ifdef CONFIG_SOFTMMU
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#define SOFTMMU_RESERVE_REGS MAKE_64BIT_MASK(TCG_REG_A0, 5)
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#else
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#define SOFTMMU_RESERVE_REGS 0
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#endif
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static inline tcg_target_long sextreg(tcg_target_long val, int pos, int len)
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{
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return sextract64(val, pos, len);
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}
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/* test if a constant matches the constraint */
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static bool tcg_target_const_match(int64_t val, TCGType type, int ct)
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{
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if (ct & TCG_CT_CONST) {
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return true;
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}
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if ((ct & TCG_CT_CONST_ZERO) && val == 0) {
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return true;
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}
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if ((ct & TCG_CT_CONST_S12) && val == sextreg(val, 0, 12)) {
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return true;
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}
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if ((ct & TCG_CT_CONST_N12) && -val == sextreg(-val, 0, 12)) {
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return true;
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}
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if ((ct & TCG_CT_CONST_U12) && val >= 0 && val <= 0xfff) {
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return true;
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}
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if ((ct & TCG_CT_CONST_C12) && ~val >= 0 && ~val <= 0xfff) {
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return true;
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}
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if ((ct & TCG_CT_CONST_WSZ) && val == (type == TCG_TYPE_I32 ? 32 : 64)) {
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return true;
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}
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return false;
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}
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/*
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* Relocations
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*/
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/*
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* Relocation records defined in LoongArch ELF psABI v1.00 is way too
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* complicated; a whopping stack machine is needed to stuff the fields, at
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* the very least one SOP_PUSH and one SOP_POP (of the correct format) are
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* needed.
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*
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* Hence, define our own simpler relocation types. Numbers are chosen as to
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* not collide with potential future additions to the true ELF relocation
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* type enum.
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*/
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/* Field Sk16, shifted right by 2; suitable for conditional jumps */
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#define R_LOONGARCH_BR_SK16 256
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/* Field Sd10k16, shifted right by 2; suitable for B and BL */
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#define R_LOONGARCH_BR_SD10K16 257
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static bool reloc_br_sk16(tcg_insn_unit *src_rw, const tcg_insn_unit *target)
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{
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const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw);
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intptr_t offset = (intptr_t)target - (intptr_t)src_rx;
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tcg_debug_assert((offset & 3) == 0);
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offset >>= 2;
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if (offset == sextreg(offset, 0, 16)) {
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*src_rw = deposit64(*src_rw, 10, 16, offset);
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return true;
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}
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return false;
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}
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static bool reloc_br_sd10k16(tcg_insn_unit *src_rw,
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const tcg_insn_unit *target)
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{
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const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw);
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intptr_t offset = (intptr_t)target - (intptr_t)src_rx;
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tcg_debug_assert((offset & 3) == 0);
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offset >>= 2;
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if (offset == sextreg(offset, 0, 26)) {
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*src_rw = deposit64(*src_rw, 0, 10, offset >> 16); /* slot d10 */
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*src_rw = deposit64(*src_rw, 10, 16, offset); /* slot k16 */
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return true;
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}
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return false;
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}
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static bool patch_reloc(tcg_insn_unit *code_ptr, int type,
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intptr_t value, intptr_t addend)
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{
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tcg_debug_assert(addend == 0);
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switch (type) {
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case R_LOONGARCH_BR_SK16:
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return reloc_br_sk16(code_ptr, (tcg_insn_unit *)value);
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case R_LOONGARCH_BR_SD10K16:
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return reloc_br_sd10k16(code_ptr, (tcg_insn_unit *)value);
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default:
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g_assert_not_reached();
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}
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}
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#include "tcg-insn-defs.c.inc"
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/*
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* TCG intrinsics
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*/
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static void tcg_out_mb(TCGContext *s, TCGArg a0)
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{
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/* Baseline LoongArch only has the full barrier, unfortunately. */
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tcg_out_opc_dbar(s, 0);
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}
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static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg)
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{
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if (ret == arg) {
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return true;
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}
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switch (type) {
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case TCG_TYPE_I32:
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case TCG_TYPE_I64:
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/*
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* Conventional register-register move used in LoongArch is
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* `or dst, src, zero`.
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*/
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tcg_out_opc_or(s, ret, arg, TCG_REG_ZERO);
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break;
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default:
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g_assert_not_reached();
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}
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return true;
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}
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static bool imm_part_needs_loading(bool high_bits_are_ones,
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tcg_target_long part)
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{
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if (high_bits_are_ones) {
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return part != -1;
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} else {
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return part != 0;
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}
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}
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/* Loads a 32-bit immediate into rd, sign-extended. */
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static void tcg_out_movi_i32(TCGContext *s, TCGReg rd, int32_t val)
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{
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tcg_target_long lo = sextreg(val, 0, 12);
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tcg_target_long hi12 = sextreg(val, 12, 20);
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/* Single-instruction cases. */
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if (lo == val) {
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/* val fits in simm12: addi.w rd, zero, val */
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tcg_out_opc_addi_w(s, rd, TCG_REG_ZERO, val);
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return;
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}
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if (0x800 <= val && val <= 0xfff) {
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/* val fits in uimm12: ori rd, zero, val */
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tcg_out_opc_ori(s, rd, TCG_REG_ZERO, val);
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return;
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}
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/* High bits must be set; load with lu12i.w + optional ori. */
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tcg_out_opc_lu12i_w(s, rd, hi12);
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if (lo != 0) {
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tcg_out_opc_ori(s, rd, rd, lo & 0xfff);
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}
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}
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static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg rd,
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tcg_target_long val)
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{
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/*
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* LoongArch conventionally loads 64-bit immediates in at most 4 steps,
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* with dedicated instructions for filling the respective bitfields
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* below:
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*
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* 6 5 4 3
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* 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2
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* +-----------------------+---------------------------------------+...
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* | hi52 | hi32 |
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* +-----------------------+---------------------------------------+...
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* 3 2 1
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* 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
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* ...+-------------------------------------+-------------------------+
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* | hi12 | lo |
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* ...+-------------------------------------+-------------------------+
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*
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* Check if val belong to one of the several fast cases, before falling
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* back to the slow path.
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*/
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intptr_t pc_offset;
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tcg_target_long val_lo, val_hi, pc_hi, offset_hi;
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tcg_target_long hi32, hi52;
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bool rd_high_bits_are_ones;
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/* Value fits in signed i32. */
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if (type == TCG_TYPE_I32 || val == (int32_t)val) {
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tcg_out_movi_i32(s, rd, val);
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return;
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}
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/* PC-relative cases. */
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pc_offset = tcg_pcrel_diff(s, (void *)val);
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if (pc_offset == sextreg(pc_offset, 0, 22) && (pc_offset & 3) == 0) {
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/* Single pcaddu2i. */
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tcg_out_opc_pcaddu2i(s, rd, pc_offset >> 2);
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return;
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}
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if (pc_offset == (int32_t)pc_offset) {
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/* Offset within 32 bits; load with pcalau12i + ori. */
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val_lo = sextreg(val, 0, 12);
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val_hi = val >> 12;
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pc_hi = (val - pc_offset) >> 12;
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offset_hi = val_hi - pc_hi;
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tcg_debug_assert(offset_hi == sextreg(offset_hi, 0, 20));
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tcg_out_opc_pcalau12i(s, rd, offset_hi);
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if (val_lo != 0) {
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tcg_out_opc_ori(s, rd, rd, val_lo & 0xfff);
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}
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return;
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}
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hi32 = sextreg(val, 32, 20);
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hi52 = sextreg(val, 52, 12);
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/* Single cu52i.d case. */
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if (ctz64(val) >= 52) {
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tcg_out_opc_cu52i_d(s, rd, TCG_REG_ZERO, hi52);
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return;
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}
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/* Slow path. Initialize the low 32 bits, then concat high bits. */
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tcg_out_movi_i32(s, rd, val);
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rd_high_bits_are_ones = (int32_t)val < 0;
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if (imm_part_needs_loading(rd_high_bits_are_ones, hi32)) {
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tcg_out_opc_cu32i_d(s, rd, hi32);
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rd_high_bits_are_ones = hi32 < 0;
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}
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if (imm_part_needs_loading(rd_high_bits_are_ones, hi52)) {
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tcg_out_opc_cu52i_d(s, rd, rd, hi52);
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}
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}
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static void tcg_out_ext8u(TCGContext *s, TCGReg ret, TCGReg arg)
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{
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tcg_out_opc_andi(s, ret, arg, 0xff);
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}
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static void tcg_out_ext16u(TCGContext *s, TCGReg ret, TCGReg arg)
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{
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tcg_out_opc_bstrpick_w(s, ret, arg, 0, 15);
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}
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static void tcg_out_ext32u(TCGContext *s, TCGReg ret, TCGReg arg)
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{
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tcg_out_opc_bstrpick_d(s, ret, arg, 0, 31);
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}
|
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|
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static void tcg_out_ext8s(TCGContext *s, TCGReg ret, TCGReg arg)
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{
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tcg_out_opc_sext_b(s, ret, arg);
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}
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|
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static void tcg_out_ext16s(TCGContext *s, TCGReg ret, TCGReg arg)
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{
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tcg_out_opc_sext_h(s, ret, arg);
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}
|
|
|
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static void tcg_out_ext32s(TCGContext *s, TCGReg ret, TCGReg arg)
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{
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tcg_out_opc_addi_w(s, ret, arg, 0);
|
|
}
|
|
|
|
static void tcg_out_clzctz(TCGContext *s, LoongArchInsn opc,
|
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TCGReg a0, TCGReg a1, TCGReg a2,
|
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bool c2, bool is_32bit)
|
|
{
|
|
if (c2) {
|
|
/*
|
|
* Fast path: semantics already satisfied due to constraint and
|
|
* insn behavior, single instruction is enough.
|
|
*/
|
|
tcg_debug_assert(a2 == (is_32bit ? 32 : 64));
|
|
/* all clz/ctz insns belong to DJ-format */
|
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tcg_out32(s, encode_dj_insn(opc, a0, a1));
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return;
|
|
}
|
|
|
|
tcg_out32(s, encode_dj_insn(opc, TCG_REG_TMP0, a1));
|
|
/* a0 = a1 ? REG_TMP0 : a2 */
|
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tcg_out_opc_maskeqz(s, TCG_REG_TMP0, TCG_REG_TMP0, a1);
|
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tcg_out_opc_masknez(s, a0, a2, a1);
|
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tcg_out_opc_or(s, a0, TCG_REG_TMP0, a0);
|
|
}
|
|
|
|
static void tcg_out_setcond(TCGContext *s, TCGCond cond, TCGReg ret,
|
|
TCGReg arg1, TCGReg arg2, bool c2)
|
|
{
|
|
TCGReg tmp;
|
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|
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if (c2) {
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tcg_debug_assert(arg2 == 0);
|
|
}
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|
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switch (cond) {
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case TCG_COND_EQ:
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if (c2) {
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tmp = arg1;
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} else {
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tcg_out_opc_sub_d(s, ret, arg1, arg2);
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tmp = ret;
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}
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tcg_out_opc_sltui(s, ret, tmp, 1);
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break;
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case TCG_COND_NE:
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if (c2) {
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tmp = arg1;
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|
} else {
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tcg_out_opc_sub_d(s, ret, arg1, arg2);
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|
tmp = ret;
|
|
}
|
|
tcg_out_opc_sltu(s, ret, TCG_REG_ZERO, tmp);
|
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break;
|
|
case TCG_COND_LT:
|
|
tcg_out_opc_slt(s, ret, arg1, arg2);
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break;
|
|
case TCG_COND_GE:
|
|
tcg_out_opc_slt(s, ret, arg1, arg2);
|
|
tcg_out_opc_xori(s, ret, ret, 1);
|
|
break;
|
|
case TCG_COND_LE:
|
|
tcg_out_setcond(s, TCG_COND_GE, ret, arg2, arg1, false);
|
|
break;
|
|
case TCG_COND_GT:
|
|
tcg_out_setcond(s, TCG_COND_LT, ret, arg2, arg1, false);
|
|
break;
|
|
case TCG_COND_LTU:
|
|
tcg_out_opc_sltu(s, ret, arg1, arg2);
|
|
break;
|
|
case TCG_COND_GEU:
|
|
tcg_out_opc_sltu(s, ret, arg1, arg2);
|
|
tcg_out_opc_xori(s, ret, ret, 1);
|
|
break;
|
|
case TCG_COND_LEU:
|
|
tcg_out_setcond(s, TCG_COND_GEU, ret, arg2, arg1, false);
|
|
break;
|
|
case TCG_COND_GTU:
|
|
tcg_out_setcond(s, TCG_COND_LTU, ret, arg2, arg1, false);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Branch helpers
|
|
*/
|
|
|
|
static const struct {
|
|
LoongArchInsn op;
|
|
bool swap;
|
|
} tcg_brcond_to_loongarch[] = {
|
|
[TCG_COND_EQ] = { OPC_BEQ, false },
|
|
[TCG_COND_NE] = { OPC_BNE, false },
|
|
[TCG_COND_LT] = { OPC_BGT, true },
|
|
[TCG_COND_GE] = { OPC_BLE, true },
|
|
[TCG_COND_LE] = { OPC_BLE, false },
|
|
[TCG_COND_GT] = { OPC_BGT, false },
|
|
[TCG_COND_LTU] = { OPC_BGTU, true },
|
|
[TCG_COND_GEU] = { OPC_BLEU, true },
|
|
[TCG_COND_LEU] = { OPC_BLEU, false },
|
|
[TCG_COND_GTU] = { OPC_BGTU, false }
|
|
};
|
|
|
|
static void tcg_out_brcond(TCGContext *s, TCGCond cond, TCGReg arg1,
|
|
TCGReg arg2, TCGLabel *l)
|
|
{
|
|
LoongArchInsn op = tcg_brcond_to_loongarch[cond].op;
|
|
|
|
tcg_debug_assert(op != 0);
|
|
|
|
if (tcg_brcond_to_loongarch[cond].swap) {
|
|
TCGReg t = arg1;
|
|
arg1 = arg2;
|
|
arg2 = t;
|
|
}
|
|
|
|
/* all conditional branch insns belong to DJSk16-format */
|
|
tcg_out_reloc(s, s->code_ptr, R_LOONGARCH_BR_SK16, l, 0);
|
|
tcg_out32(s, encode_djsk16_insn(op, arg1, arg2, 0));
|
|
}
|
|
|
|
static void tcg_out_call_int(TCGContext *s, const tcg_insn_unit *arg, bool tail)
|
|
{
|
|
TCGReg link = tail ? TCG_REG_ZERO : TCG_REG_RA;
|
|
ptrdiff_t offset = tcg_pcrel_diff(s, arg);
|
|
|
|
tcg_debug_assert((offset & 3) == 0);
|
|
if (offset == sextreg(offset, 0, 28)) {
|
|
/* short jump: +/- 256MiB */
|
|
if (tail) {
|
|
tcg_out_opc_b(s, offset >> 2);
|
|
} else {
|
|
tcg_out_opc_bl(s, offset >> 2);
|
|
}
|
|
} else if (offset == sextreg(offset, 0, 38)) {
|
|
/* long jump: +/- 256GiB */
|
|
tcg_target_long lo = sextreg(offset, 0, 18);
|
|
tcg_target_long hi = offset - lo;
|
|
tcg_out_opc_pcaddu18i(s, TCG_REG_TMP0, hi >> 18);
|
|
tcg_out_opc_jirl(s, link, TCG_REG_TMP0, lo >> 2);
|
|
} else {
|
|
/* far jump: 64-bit */
|
|
tcg_target_long lo = sextreg((tcg_target_long)arg, 0, 18);
|
|
tcg_target_long hi = (tcg_target_long)arg - lo;
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP0, hi);
|
|
tcg_out_opc_jirl(s, link, TCG_REG_TMP0, lo >> 2);
|
|
}
|
|
}
|
|
|
|
static void tcg_out_call(TCGContext *s, const tcg_insn_unit *arg,
|
|
const TCGHelperInfo *info)
|
|
{
|
|
tcg_out_call_int(s, arg, false);
|
|
}
|
|
|
|
/*
|
|
* Load/store helpers
|
|
*/
|
|
|
|
static void tcg_out_ldst(TCGContext *s, LoongArchInsn opc, TCGReg data,
|
|
TCGReg addr, intptr_t offset)
|
|
{
|
|
intptr_t imm12 = sextreg(offset, 0, 12);
|
|
|
|
if (offset != imm12) {
|
|
intptr_t diff = offset - (uintptr_t)s->code_ptr;
|
|
|
|
if (addr == TCG_REG_ZERO && diff == (int32_t)diff) {
|
|
imm12 = sextreg(diff, 0, 12);
|
|
tcg_out_opc_pcaddu12i(s, TCG_REG_TMP2, (diff - imm12) >> 12);
|
|
} else {
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP2, offset - imm12);
|
|
if (addr != TCG_REG_ZERO) {
|
|
tcg_out_opc_add_d(s, TCG_REG_TMP2, TCG_REG_TMP2, addr);
|
|
}
|
|
}
|
|
addr = TCG_REG_TMP2;
|
|
}
|
|
|
|
switch (opc) {
|
|
case OPC_LD_B:
|
|
case OPC_LD_BU:
|
|
case OPC_LD_H:
|
|
case OPC_LD_HU:
|
|
case OPC_LD_W:
|
|
case OPC_LD_WU:
|
|
case OPC_LD_D:
|
|
case OPC_ST_B:
|
|
case OPC_ST_H:
|
|
case OPC_ST_W:
|
|
case OPC_ST_D:
|
|
tcg_out32(s, encode_djsk12_insn(opc, data, addr, imm12));
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
|
|
static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg arg,
|
|
TCGReg arg1, intptr_t arg2)
|
|
{
|
|
bool is_32bit = type == TCG_TYPE_I32;
|
|
tcg_out_ldst(s, is_32bit ? OPC_LD_W : OPC_LD_D, arg, arg1, arg2);
|
|
}
|
|
|
|
static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg,
|
|
TCGReg arg1, intptr_t arg2)
|
|
{
|
|
bool is_32bit = type == TCG_TYPE_I32;
|
|
tcg_out_ldst(s, is_32bit ? OPC_ST_W : OPC_ST_D, arg, arg1, arg2);
|
|
}
|
|
|
|
static bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val,
|
|
TCGReg base, intptr_t ofs)
|
|
{
|
|
if (val == 0) {
|
|
tcg_out_st(s, type, TCG_REG_ZERO, base, ofs);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* Load/store helpers for SoftMMU, and qemu_ld/st implementations
|
|
*/
|
|
|
|
#if defined(CONFIG_SOFTMMU)
|
|
/*
|
|
* helper signature: helper_ret_ld_mmu(CPUState *env, target_ulong addr,
|
|
* MemOpIdx oi, uintptr_t ra)
|
|
*/
|
|
static void * const qemu_ld_helpers[4] = {
|
|
[MO_8] = helper_ret_ldub_mmu,
|
|
[MO_16] = helper_le_lduw_mmu,
|
|
[MO_32] = helper_le_ldul_mmu,
|
|
[MO_64] = helper_le_ldq_mmu,
|
|
};
|
|
|
|
/*
|
|
* helper signature: helper_ret_st_mmu(CPUState *env, target_ulong addr,
|
|
* uintxx_t val, MemOpIdx oi,
|
|
* uintptr_t ra)
|
|
*/
|
|
static void * const qemu_st_helpers[4] = {
|
|
[MO_8] = helper_ret_stb_mmu,
|
|
[MO_16] = helper_le_stw_mmu,
|
|
[MO_32] = helper_le_stl_mmu,
|
|
[MO_64] = helper_le_stq_mmu,
|
|
};
|
|
|
|
/* We expect to use a 12-bit negative offset from ENV. */
|
|
QEMU_BUILD_BUG_ON(TLB_MASK_TABLE_OFS(0) > 0);
|
|
QEMU_BUILD_BUG_ON(TLB_MASK_TABLE_OFS(0) < -(1 << 11));
|
|
|
|
static bool tcg_out_goto(TCGContext *s, const tcg_insn_unit *target)
|
|
{
|
|
tcg_out_opc_b(s, 0);
|
|
return reloc_br_sd10k16(s->code_ptr - 1, target);
|
|
}
|
|
|
|
/*
|
|
* Emits common code for TLB addend lookup, that eventually loads the
|
|
* addend in TCG_REG_TMP2.
|
|
*/
|
|
static void tcg_out_tlb_load(TCGContext *s, TCGReg addrl, MemOpIdx oi,
|
|
tcg_insn_unit **label_ptr, bool is_load)
|
|
{
|
|
MemOp opc = get_memop(oi);
|
|
unsigned s_bits = opc & MO_SIZE;
|
|
unsigned a_bits = get_alignment_bits(opc);
|
|
tcg_target_long compare_mask;
|
|
int mem_index = get_mmuidx(oi);
|
|
int fast_ofs = TLB_MASK_TABLE_OFS(mem_index);
|
|
int mask_ofs = fast_ofs + offsetof(CPUTLBDescFast, mask);
|
|
int table_ofs = fast_ofs + offsetof(CPUTLBDescFast, table);
|
|
|
|
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP0, TCG_AREG0, mask_ofs);
|
|
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_AREG0, table_ofs);
|
|
|
|
tcg_out_opc_srli_d(s, TCG_REG_TMP2, addrl,
|
|
TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS);
|
|
tcg_out_opc_and(s, TCG_REG_TMP2, TCG_REG_TMP2, TCG_REG_TMP0);
|
|
tcg_out_opc_add_d(s, TCG_REG_TMP2, TCG_REG_TMP2, TCG_REG_TMP1);
|
|
|
|
/* Load the tlb comparator and the addend. */
|
|
tcg_out_ld(s, TCG_TYPE_TL, TCG_REG_TMP0, TCG_REG_TMP2,
|
|
is_load ? offsetof(CPUTLBEntry, addr_read)
|
|
: offsetof(CPUTLBEntry, addr_write));
|
|
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP2, TCG_REG_TMP2,
|
|
offsetof(CPUTLBEntry, addend));
|
|
|
|
/* We don't support unaligned accesses. */
|
|
if (a_bits < s_bits) {
|
|
a_bits = s_bits;
|
|
}
|
|
/* Clear the non-page, non-alignment bits from the address. */
|
|
compare_mask = (tcg_target_long)TARGET_PAGE_MASK | ((1 << a_bits) - 1);
|
|
tcg_out_movi(s, TCG_TYPE_TL, TCG_REG_TMP1, compare_mask);
|
|
tcg_out_opc_and(s, TCG_REG_TMP1, TCG_REG_TMP1, addrl);
|
|
|
|
/* Compare masked address with the TLB entry. */
|
|
label_ptr[0] = s->code_ptr;
|
|
tcg_out_opc_bne(s, TCG_REG_TMP0, TCG_REG_TMP1, 0);
|
|
|
|
/* TLB Hit - addend in TCG_REG_TMP2, ready for use. */
|
|
}
|
|
|
|
static void add_qemu_ldst_label(TCGContext *s, int is_ld, MemOpIdx oi,
|
|
TCGType type,
|
|
TCGReg datalo, TCGReg addrlo,
|
|
void *raddr, tcg_insn_unit **label_ptr)
|
|
{
|
|
TCGLabelQemuLdst *label = new_ldst_label(s);
|
|
|
|
label->is_ld = is_ld;
|
|
label->oi = oi;
|
|
label->type = type;
|
|
label->datalo_reg = datalo;
|
|
label->datahi_reg = 0; /* unused */
|
|
label->addrlo_reg = addrlo;
|
|
label->addrhi_reg = 0; /* unused */
|
|
label->raddr = tcg_splitwx_to_rx(raddr);
|
|
label->label_ptr[0] = label_ptr[0];
|
|
}
|
|
|
|
static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
|
|
{
|
|
MemOpIdx oi = l->oi;
|
|
MemOp opc = get_memop(oi);
|
|
MemOp size = opc & MO_SIZE;
|
|
TCGType type = l->type;
|
|
|
|
/* resolve label address */
|
|
if (!reloc_br_sk16(l->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) {
|
|
return false;
|
|
}
|
|
|
|
/* call load helper */
|
|
tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_A0, TCG_AREG0);
|
|
tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_A1, l->addrlo_reg);
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A2, oi);
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A3, (tcg_target_long)l->raddr);
|
|
|
|
tcg_out_call_int(s, qemu_ld_helpers[size], false);
|
|
|
|
switch (opc & MO_SSIZE) {
|
|
case MO_SB:
|
|
tcg_out_ext8s(s, l->datalo_reg, TCG_REG_A0);
|
|
break;
|
|
case MO_SW:
|
|
tcg_out_ext16s(s, l->datalo_reg, TCG_REG_A0);
|
|
break;
|
|
case MO_SL:
|
|
tcg_out_ext32s(s, l->datalo_reg, TCG_REG_A0);
|
|
break;
|
|
case MO_UL:
|
|
if (type == TCG_TYPE_I32) {
|
|
/* MO_UL loads of i32 should be sign-extended too */
|
|
tcg_out_ext32s(s, l->datalo_reg, TCG_REG_A0);
|
|
break;
|
|
}
|
|
/* fallthrough */
|
|
default:
|
|
tcg_out_mov(s, type, l->datalo_reg, TCG_REG_A0);
|
|
break;
|
|
}
|
|
|
|
return tcg_out_goto(s, l->raddr);
|
|
}
|
|
|
|
static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
|
|
{
|
|
MemOpIdx oi = l->oi;
|
|
MemOp opc = get_memop(oi);
|
|
MemOp size = opc & MO_SIZE;
|
|
|
|
/* resolve label address */
|
|
if (!reloc_br_sk16(l->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) {
|
|
return false;
|
|
}
|
|
|
|
/* call store helper */
|
|
tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_A0, TCG_AREG0);
|
|
tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_A1, l->addrlo_reg);
|
|
switch (size) {
|
|
case MO_8:
|
|
tcg_out_ext8u(s, TCG_REG_A2, l->datalo_reg);
|
|
break;
|
|
case MO_16:
|
|
tcg_out_ext16u(s, TCG_REG_A2, l->datalo_reg);
|
|
break;
|
|
case MO_32:
|
|
tcg_out_ext32u(s, TCG_REG_A2, l->datalo_reg);
|
|
break;
|
|
case MO_64:
|
|
tcg_out_mov(s, TCG_TYPE_I64, TCG_REG_A2, l->datalo_reg);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
break;
|
|
}
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A3, oi);
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A4, (tcg_target_long)l->raddr);
|
|
|
|
tcg_out_call_int(s, qemu_st_helpers[size], false);
|
|
|
|
return tcg_out_goto(s, l->raddr);
|
|
}
|
|
#else
|
|
|
|
/*
|
|
* Alignment helpers for user-mode emulation
|
|
*/
|
|
|
|
static void tcg_out_test_alignment(TCGContext *s, bool is_ld, TCGReg addr_reg,
|
|
unsigned a_bits)
|
|
{
|
|
TCGLabelQemuLdst *l = new_ldst_label(s);
|
|
|
|
l->is_ld = is_ld;
|
|
l->addrlo_reg = addr_reg;
|
|
|
|
/*
|
|
* Without micro-architecture details, we don't know which of bstrpick or
|
|
* andi is faster, so use bstrpick as it's not constrained by imm field
|
|
* width. (Not to say alignments >= 2^12 are going to happen any time
|
|
* soon, though)
|
|
*/
|
|
tcg_out_opc_bstrpick_d(s, TCG_REG_TMP1, addr_reg, 0, a_bits - 1);
|
|
|
|
l->label_ptr[0] = s->code_ptr;
|
|
tcg_out_opc_bne(s, TCG_REG_TMP1, TCG_REG_ZERO, 0);
|
|
|
|
l->raddr = tcg_splitwx_to_rx(s->code_ptr);
|
|
}
|
|
|
|
static bool tcg_out_fail_alignment(TCGContext *s, TCGLabelQemuLdst *l)
|
|
{
|
|
/* resolve label address */
|
|
if (!reloc_br_sk16(l->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) {
|
|
return false;
|
|
}
|
|
|
|
tcg_out_mov(s, TCG_TYPE_TL, TCG_REG_A1, l->addrlo_reg);
|
|
tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_A0, TCG_AREG0);
|
|
|
|
/* tail call, with the return address back inline. */
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_RA, (uintptr_t)l->raddr);
|
|
tcg_out_call_int(s, (const void *)(l->is_ld ? helper_unaligned_ld
|
|
: helper_unaligned_st), true);
|
|
return true;
|
|
}
|
|
|
|
static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
|
|
{
|
|
return tcg_out_fail_alignment(s, l);
|
|
}
|
|
|
|
static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
|
|
{
|
|
return tcg_out_fail_alignment(s, l);
|
|
}
|
|
|
|
#endif /* CONFIG_SOFTMMU */
|
|
|
|
/*
|
|
* `ext32u` the address register into the temp register given,
|
|
* if target is 32-bit, no-op otherwise.
|
|
*
|
|
* Returns the address register ready for use with TLB addend.
|
|
*/
|
|
static TCGReg tcg_out_zext_addr_if_32_bit(TCGContext *s,
|
|
TCGReg addr, TCGReg tmp)
|
|
{
|
|
if (TARGET_LONG_BITS == 32) {
|
|
tcg_out_ext32u(s, tmp, addr);
|
|
return tmp;
|
|
}
|
|
return addr;
|
|
}
|
|
|
|
static void tcg_out_qemu_ld_indexed(TCGContext *s, TCGReg rd, TCGReg rj,
|
|
TCGReg rk, MemOp opc, TCGType type)
|
|
{
|
|
/* Byte swapping is left to middle-end expansion. */
|
|
tcg_debug_assert((opc & MO_BSWAP) == 0);
|
|
|
|
switch (opc & MO_SSIZE) {
|
|
case MO_UB:
|
|
tcg_out_opc_ldx_bu(s, rd, rj, rk);
|
|
break;
|
|
case MO_SB:
|
|
tcg_out_opc_ldx_b(s, rd, rj, rk);
|
|
break;
|
|
case MO_UW:
|
|
tcg_out_opc_ldx_hu(s, rd, rj, rk);
|
|
break;
|
|
case MO_SW:
|
|
tcg_out_opc_ldx_h(s, rd, rj, rk);
|
|
break;
|
|
case MO_UL:
|
|
if (type == TCG_TYPE_I64) {
|
|
tcg_out_opc_ldx_wu(s, rd, rj, rk);
|
|
break;
|
|
}
|
|
/* fallthrough */
|
|
case MO_SL:
|
|
tcg_out_opc_ldx_w(s, rd, rj, rk);
|
|
break;
|
|
case MO_UQ:
|
|
tcg_out_opc_ldx_d(s, rd, rj, rk);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
|
|
static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, TCGType type)
|
|
{
|
|
TCGReg addr_regl;
|
|
TCGReg data_regl;
|
|
MemOpIdx oi;
|
|
MemOp opc;
|
|
#if defined(CONFIG_SOFTMMU)
|
|
tcg_insn_unit *label_ptr[1];
|
|
#else
|
|
unsigned a_bits;
|
|
#endif
|
|
TCGReg base;
|
|
|
|
data_regl = *args++;
|
|
addr_regl = *args++;
|
|
oi = *args++;
|
|
opc = get_memop(oi);
|
|
|
|
#if defined(CONFIG_SOFTMMU)
|
|
tcg_out_tlb_load(s, addr_regl, oi, label_ptr, 1);
|
|
base = tcg_out_zext_addr_if_32_bit(s, addr_regl, TCG_REG_TMP0);
|
|
tcg_out_qemu_ld_indexed(s, data_regl, base, TCG_REG_TMP2, opc, type);
|
|
add_qemu_ldst_label(s, 1, oi, type,
|
|
data_regl, addr_regl,
|
|
s->code_ptr, label_ptr);
|
|
#else
|
|
a_bits = get_alignment_bits(opc);
|
|
if (a_bits) {
|
|
tcg_out_test_alignment(s, true, addr_regl, a_bits);
|
|
}
|
|
base = tcg_out_zext_addr_if_32_bit(s, addr_regl, TCG_REG_TMP0);
|
|
TCGReg guest_base_reg = USE_GUEST_BASE ? TCG_GUEST_BASE_REG : TCG_REG_ZERO;
|
|
tcg_out_qemu_ld_indexed(s, data_regl, base, guest_base_reg, opc, type);
|
|
#endif
|
|
}
|
|
|
|
static void tcg_out_qemu_st_indexed(TCGContext *s, TCGReg data,
|
|
TCGReg rj, TCGReg rk, MemOp opc)
|
|
{
|
|
/* Byte swapping is left to middle-end expansion. */
|
|
tcg_debug_assert((opc & MO_BSWAP) == 0);
|
|
|
|
switch (opc & MO_SIZE) {
|
|
case MO_8:
|
|
tcg_out_opc_stx_b(s, data, rj, rk);
|
|
break;
|
|
case MO_16:
|
|
tcg_out_opc_stx_h(s, data, rj, rk);
|
|
break;
|
|
case MO_32:
|
|
tcg_out_opc_stx_w(s, data, rj, rk);
|
|
break;
|
|
case MO_64:
|
|
tcg_out_opc_stx_d(s, data, rj, rk);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
|
|
static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args)
|
|
{
|
|
TCGReg addr_regl;
|
|
TCGReg data_regl;
|
|
MemOpIdx oi;
|
|
MemOp opc;
|
|
#if defined(CONFIG_SOFTMMU)
|
|
tcg_insn_unit *label_ptr[1];
|
|
#else
|
|
unsigned a_bits;
|
|
#endif
|
|
TCGReg base;
|
|
|
|
data_regl = *args++;
|
|
addr_regl = *args++;
|
|
oi = *args++;
|
|
opc = get_memop(oi);
|
|
|
|
#if defined(CONFIG_SOFTMMU)
|
|
tcg_out_tlb_load(s, addr_regl, oi, label_ptr, 0);
|
|
base = tcg_out_zext_addr_if_32_bit(s, addr_regl, TCG_REG_TMP0);
|
|
tcg_out_qemu_st_indexed(s, data_regl, base, TCG_REG_TMP2, opc);
|
|
add_qemu_ldst_label(s, 0, oi,
|
|
0, /* type param is unused for stores */
|
|
data_regl, addr_regl,
|
|
s->code_ptr, label_ptr);
|
|
#else
|
|
a_bits = get_alignment_bits(opc);
|
|
if (a_bits) {
|
|
tcg_out_test_alignment(s, false, addr_regl, a_bits);
|
|
}
|
|
base = tcg_out_zext_addr_if_32_bit(s, addr_regl, TCG_REG_TMP0);
|
|
TCGReg guest_base_reg = USE_GUEST_BASE ? TCG_GUEST_BASE_REG : TCG_REG_ZERO;
|
|
tcg_out_qemu_st_indexed(s, data_regl, base, guest_base_reg, opc);
|
|
#endif
|
|
}
|
|
|
|
/* LoongArch uses `andi zero, zero, 0` as NOP. */
|
|
#define NOP OPC_ANDI
|
|
static void tcg_out_nop(TCGContext *s)
|
|
{
|
|
tcg_out32(s, NOP);
|
|
}
|
|
|
|
void tb_target_set_jmp_target(uintptr_t tc_ptr, uintptr_t jmp_rx,
|
|
uintptr_t jmp_rw, uintptr_t addr)
|
|
{
|
|
tcg_insn_unit i1, i2;
|
|
ptrdiff_t upper, lower;
|
|
ptrdiff_t offset = (ptrdiff_t)(addr - jmp_rx) >> 2;
|
|
|
|
if (offset == sextreg(offset, 0, 26)) {
|
|
i1 = encode_sd10k16_insn(OPC_B, offset);
|
|
i2 = NOP;
|
|
} else {
|
|
tcg_debug_assert(offset == sextreg(offset, 0, 36));
|
|
lower = (int16_t)offset;
|
|
upper = (offset - lower) >> 16;
|
|
|
|
i1 = encode_dsj20_insn(OPC_PCADDU18I, TCG_REG_TMP0, upper);
|
|
i2 = encode_djsk16_insn(OPC_JIRL, TCG_REG_ZERO, TCG_REG_TMP0, lower);
|
|
}
|
|
uint64_t pair = ((uint64_t)i2 << 32) | i1;
|
|
qatomic_set((uint64_t *)jmp_rw, pair);
|
|
flush_idcache_range(jmp_rx, jmp_rw, 8);
|
|
}
|
|
|
|
/*
|
|
* Entry-points
|
|
*/
|
|
|
|
static const tcg_insn_unit *tb_ret_addr;
|
|
|
|
static void tcg_out_exit_tb(TCGContext *s, uintptr_t a0)
|
|
{
|
|
/* Reuse the zeroing that exists for goto_ptr. */
|
|
if (a0 == 0) {
|
|
tcg_out_call_int(s, tcg_code_gen_epilogue, true);
|
|
} else {
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A0, a0);
|
|
tcg_out_call_int(s, tb_ret_addr, true);
|
|
}
|
|
}
|
|
|
|
static void tcg_out_goto_tb(TCGContext *s, int which)
|
|
{
|
|
/*
|
|
* Ensure that patch area is 8-byte aligned so that an
|
|
* atomic write can be used to patch the target address.
|
|
*/
|
|
if ((uintptr_t)s->code_ptr & 7) {
|
|
tcg_out_nop(s);
|
|
}
|
|
set_jmp_insn_offset(s, which);
|
|
/*
|
|
* actual branch destination will be patched by
|
|
* tb_target_set_jmp_target later
|
|
*/
|
|
tcg_out_opc_pcaddu18i(s, TCG_REG_TMP0, 0);
|
|
tcg_out_opc_jirl(s, TCG_REG_ZERO, TCG_REG_TMP0, 0);
|
|
set_jmp_reset_offset(s, which);
|
|
}
|
|
|
|
static void tcg_out_op(TCGContext *s, TCGOpcode opc,
|
|
const TCGArg args[TCG_MAX_OP_ARGS],
|
|
const int const_args[TCG_MAX_OP_ARGS])
|
|
{
|
|
TCGArg a0 = args[0];
|
|
TCGArg a1 = args[1];
|
|
TCGArg a2 = args[2];
|
|
int c2 = const_args[2];
|
|
|
|
switch (opc) {
|
|
case INDEX_op_mb:
|
|
tcg_out_mb(s, a0);
|
|
break;
|
|
|
|
case INDEX_op_goto_ptr:
|
|
tcg_out_opc_jirl(s, TCG_REG_ZERO, a0, 0);
|
|
break;
|
|
|
|
case INDEX_op_br:
|
|
tcg_out_reloc(s, s->code_ptr, R_LOONGARCH_BR_SD10K16, arg_label(a0),
|
|
0);
|
|
tcg_out_opc_b(s, 0);
|
|
break;
|
|
|
|
case INDEX_op_brcond_i32:
|
|
case INDEX_op_brcond_i64:
|
|
tcg_out_brcond(s, a2, a0, a1, arg_label(args[3]));
|
|
break;
|
|
|
|
case INDEX_op_ext8s_i32:
|
|
case INDEX_op_ext8s_i64:
|
|
tcg_out_ext8s(s, a0, a1);
|
|
break;
|
|
|
|
case INDEX_op_ext8u_i32:
|
|
case INDEX_op_ext8u_i64:
|
|
tcg_out_ext8u(s, a0, a1);
|
|
break;
|
|
|
|
case INDEX_op_ext16s_i32:
|
|
case INDEX_op_ext16s_i64:
|
|
tcg_out_ext16s(s, a0, a1);
|
|
break;
|
|
|
|
case INDEX_op_ext16u_i32:
|
|
case INDEX_op_ext16u_i64:
|
|
tcg_out_ext16u(s, a0, a1);
|
|
break;
|
|
|
|
case INDEX_op_ext32u_i64:
|
|
case INDEX_op_extu_i32_i64:
|
|
tcg_out_ext32u(s, a0, a1);
|
|
break;
|
|
|
|
case INDEX_op_ext32s_i64:
|
|
case INDEX_op_extrl_i64_i32:
|
|
case INDEX_op_ext_i32_i64:
|
|
tcg_out_ext32s(s, a0, a1);
|
|
break;
|
|
|
|
case INDEX_op_extrh_i64_i32:
|
|
tcg_out_opc_srai_d(s, a0, a1, 32);
|
|
break;
|
|
|
|
case INDEX_op_not_i32:
|
|
case INDEX_op_not_i64:
|
|
tcg_out_opc_nor(s, a0, a1, TCG_REG_ZERO);
|
|
break;
|
|
|
|
case INDEX_op_nor_i32:
|
|
case INDEX_op_nor_i64:
|
|
if (c2) {
|
|
tcg_out_opc_ori(s, a0, a1, a2);
|
|
tcg_out_opc_nor(s, a0, a0, TCG_REG_ZERO);
|
|
} else {
|
|
tcg_out_opc_nor(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_andc_i32:
|
|
case INDEX_op_andc_i64:
|
|
if (c2) {
|
|
/* guaranteed to fit due to constraint */
|
|
tcg_out_opc_andi(s, a0, a1, ~a2);
|
|
} else {
|
|
tcg_out_opc_andn(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_orc_i32:
|
|
case INDEX_op_orc_i64:
|
|
if (c2) {
|
|
/* guaranteed to fit due to constraint */
|
|
tcg_out_opc_ori(s, a0, a1, ~a2);
|
|
} else {
|
|
tcg_out_opc_orn(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_and_i32:
|
|
case INDEX_op_and_i64:
|
|
if (c2) {
|
|
tcg_out_opc_andi(s, a0, a1, a2);
|
|
} else {
|
|
tcg_out_opc_and(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_or_i32:
|
|
case INDEX_op_or_i64:
|
|
if (c2) {
|
|
tcg_out_opc_ori(s, a0, a1, a2);
|
|
} else {
|
|
tcg_out_opc_or(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_xor_i32:
|
|
case INDEX_op_xor_i64:
|
|
if (c2) {
|
|
tcg_out_opc_xori(s, a0, a1, a2);
|
|
} else {
|
|
tcg_out_opc_xor(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_extract_i32:
|
|
tcg_out_opc_bstrpick_w(s, a0, a1, a2, a2 + args[3] - 1);
|
|
break;
|
|
case INDEX_op_extract_i64:
|
|
tcg_out_opc_bstrpick_d(s, a0, a1, a2, a2 + args[3] - 1);
|
|
break;
|
|
|
|
case INDEX_op_deposit_i32:
|
|
tcg_out_opc_bstrins_w(s, a0, a2, args[3], args[3] + args[4] - 1);
|
|
break;
|
|
case INDEX_op_deposit_i64:
|
|
tcg_out_opc_bstrins_d(s, a0, a2, args[3], args[3] + args[4] - 1);
|
|
break;
|
|
|
|
case INDEX_op_bswap16_i32:
|
|
case INDEX_op_bswap16_i64:
|
|
tcg_out_opc_revb_2h(s, a0, a1);
|
|
if (a2 & TCG_BSWAP_OS) {
|
|
tcg_out_ext16s(s, a0, a0);
|
|
} else if ((a2 & (TCG_BSWAP_IZ | TCG_BSWAP_OZ)) == TCG_BSWAP_OZ) {
|
|
tcg_out_ext16u(s, a0, a0);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_bswap32_i32:
|
|
/* All 32-bit values are computed sign-extended in the register. */
|
|
a2 = TCG_BSWAP_OS;
|
|
/* fallthrough */
|
|
case INDEX_op_bswap32_i64:
|
|
tcg_out_opc_revb_2w(s, a0, a1);
|
|
if (a2 & TCG_BSWAP_OS) {
|
|
tcg_out_ext32s(s, a0, a0);
|
|
} else if ((a2 & (TCG_BSWAP_IZ | TCG_BSWAP_OZ)) == TCG_BSWAP_OZ) {
|
|
tcg_out_ext32u(s, a0, a0);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_bswap64_i64:
|
|
tcg_out_opc_revb_d(s, a0, a1);
|
|
break;
|
|
|
|
case INDEX_op_clz_i32:
|
|
tcg_out_clzctz(s, OPC_CLZ_W, a0, a1, a2, c2, true);
|
|
break;
|
|
case INDEX_op_clz_i64:
|
|
tcg_out_clzctz(s, OPC_CLZ_D, a0, a1, a2, c2, false);
|
|
break;
|
|
|
|
case INDEX_op_ctz_i32:
|
|
tcg_out_clzctz(s, OPC_CTZ_W, a0, a1, a2, c2, true);
|
|
break;
|
|
case INDEX_op_ctz_i64:
|
|
tcg_out_clzctz(s, OPC_CTZ_D, a0, a1, a2, c2, false);
|
|
break;
|
|
|
|
case INDEX_op_shl_i32:
|
|
if (c2) {
|
|
tcg_out_opc_slli_w(s, a0, a1, a2 & 0x1f);
|
|
} else {
|
|
tcg_out_opc_sll_w(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
case INDEX_op_shl_i64:
|
|
if (c2) {
|
|
tcg_out_opc_slli_d(s, a0, a1, a2 & 0x3f);
|
|
} else {
|
|
tcg_out_opc_sll_d(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_shr_i32:
|
|
if (c2) {
|
|
tcg_out_opc_srli_w(s, a0, a1, a2 & 0x1f);
|
|
} else {
|
|
tcg_out_opc_srl_w(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
case INDEX_op_shr_i64:
|
|
if (c2) {
|
|
tcg_out_opc_srli_d(s, a0, a1, a2 & 0x3f);
|
|
} else {
|
|
tcg_out_opc_srl_d(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_sar_i32:
|
|
if (c2) {
|
|
tcg_out_opc_srai_w(s, a0, a1, a2 & 0x1f);
|
|
} else {
|
|
tcg_out_opc_sra_w(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
case INDEX_op_sar_i64:
|
|
if (c2) {
|
|
tcg_out_opc_srai_d(s, a0, a1, a2 & 0x3f);
|
|
} else {
|
|
tcg_out_opc_sra_d(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_rotl_i32:
|
|
/* transform into equivalent rotr/rotri */
|
|
if (c2) {
|
|
tcg_out_opc_rotri_w(s, a0, a1, (32 - a2) & 0x1f);
|
|
} else {
|
|
tcg_out_opc_sub_w(s, TCG_REG_TMP0, TCG_REG_ZERO, a2);
|
|
tcg_out_opc_rotr_w(s, a0, a1, TCG_REG_TMP0);
|
|
}
|
|
break;
|
|
case INDEX_op_rotl_i64:
|
|
/* transform into equivalent rotr/rotri */
|
|
if (c2) {
|
|
tcg_out_opc_rotri_d(s, a0, a1, (64 - a2) & 0x3f);
|
|
} else {
|
|
tcg_out_opc_sub_w(s, TCG_REG_TMP0, TCG_REG_ZERO, a2);
|
|
tcg_out_opc_rotr_d(s, a0, a1, TCG_REG_TMP0);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_rotr_i32:
|
|
if (c2) {
|
|
tcg_out_opc_rotri_w(s, a0, a1, a2 & 0x1f);
|
|
} else {
|
|
tcg_out_opc_rotr_w(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
case INDEX_op_rotr_i64:
|
|
if (c2) {
|
|
tcg_out_opc_rotri_d(s, a0, a1, a2 & 0x3f);
|
|
} else {
|
|
tcg_out_opc_rotr_d(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_add_i32:
|
|
if (c2) {
|
|
tcg_out_opc_addi_w(s, a0, a1, a2);
|
|
} else {
|
|
tcg_out_opc_add_w(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
case INDEX_op_add_i64:
|
|
if (c2) {
|
|
tcg_out_opc_addi_d(s, a0, a1, a2);
|
|
} else {
|
|
tcg_out_opc_add_d(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_sub_i32:
|
|
if (c2) {
|
|
tcg_out_opc_addi_w(s, a0, a1, -a2);
|
|
} else {
|
|
tcg_out_opc_sub_w(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
case INDEX_op_sub_i64:
|
|
if (c2) {
|
|
tcg_out_opc_addi_d(s, a0, a1, -a2);
|
|
} else {
|
|
tcg_out_opc_sub_d(s, a0, a1, a2);
|
|
}
|
|
break;
|
|
|
|
case INDEX_op_mul_i32:
|
|
tcg_out_opc_mul_w(s, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_mul_i64:
|
|
tcg_out_opc_mul_d(s, a0, a1, a2);
|
|
break;
|
|
|
|
case INDEX_op_mulsh_i32:
|
|
tcg_out_opc_mulh_w(s, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_mulsh_i64:
|
|
tcg_out_opc_mulh_d(s, a0, a1, a2);
|
|
break;
|
|
|
|
case INDEX_op_muluh_i32:
|
|
tcg_out_opc_mulh_wu(s, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_muluh_i64:
|
|
tcg_out_opc_mulh_du(s, a0, a1, a2);
|
|
break;
|
|
|
|
case INDEX_op_div_i32:
|
|
tcg_out_opc_div_w(s, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_div_i64:
|
|
tcg_out_opc_div_d(s, a0, a1, a2);
|
|
break;
|
|
|
|
case INDEX_op_divu_i32:
|
|
tcg_out_opc_div_wu(s, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_divu_i64:
|
|
tcg_out_opc_div_du(s, a0, a1, a2);
|
|
break;
|
|
|
|
case INDEX_op_rem_i32:
|
|
tcg_out_opc_mod_w(s, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_rem_i64:
|
|
tcg_out_opc_mod_d(s, a0, a1, a2);
|
|
break;
|
|
|
|
case INDEX_op_remu_i32:
|
|
tcg_out_opc_mod_wu(s, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_remu_i64:
|
|
tcg_out_opc_mod_du(s, a0, a1, a2);
|
|
break;
|
|
|
|
case INDEX_op_setcond_i32:
|
|
case INDEX_op_setcond_i64:
|
|
tcg_out_setcond(s, args[3], a0, a1, a2, c2);
|
|
break;
|
|
|
|
case INDEX_op_ld8s_i32:
|
|
case INDEX_op_ld8s_i64:
|
|
tcg_out_ldst(s, OPC_LD_B, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_ld8u_i32:
|
|
case INDEX_op_ld8u_i64:
|
|
tcg_out_ldst(s, OPC_LD_BU, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_ld16s_i32:
|
|
case INDEX_op_ld16s_i64:
|
|
tcg_out_ldst(s, OPC_LD_H, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_ld16u_i32:
|
|
case INDEX_op_ld16u_i64:
|
|
tcg_out_ldst(s, OPC_LD_HU, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_ld_i32:
|
|
case INDEX_op_ld32s_i64:
|
|
tcg_out_ldst(s, OPC_LD_W, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_ld32u_i64:
|
|
tcg_out_ldst(s, OPC_LD_WU, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_ld_i64:
|
|
tcg_out_ldst(s, OPC_LD_D, a0, a1, a2);
|
|
break;
|
|
|
|
case INDEX_op_st8_i32:
|
|
case INDEX_op_st8_i64:
|
|
tcg_out_ldst(s, OPC_ST_B, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_st16_i32:
|
|
case INDEX_op_st16_i64:
|
|
tcg_out_ldst(s, OPC_ST_H, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_st_i32:
|
|
case INDEX_op_st32_i64:
|
|
tcg_out_ldst(s, OPC_ST_W, a0, a1, a2);
|
|
break;
|
|
case INDEX_op_st_i64:
|
|
tcg_out_ldst(s, OPC_ST_D, a0, a1, a2);
|
|
break;
|
|
|
|
case INDEX_op_qemu_ld_i32:
|
|
tcg_out_qemu_ld(s, args, TCG_TYPE_I32);
|
|
break;
|
|
case INDEX_op_qemu_ld_i64:
|
|
tcg_out_qemu_ld(s, args, TCG_TYPE_I64);
|
|
break;
|
|
case INDEX_op_qemu_st_i32:
|
|
tcg_out_qemu_st(s, args);
|
|
break;
|
|
case INDEX_op_qemu_st_i64:
|
|
tcg_out_qemu_st(s, args);
|
|
break;
|
|
|
|
case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */
|
|
case INDEX_op_mov_i64:
|
|
case INDEX_op_call: /* Always emitted via tcg_out_call. */
|
|
case INDEX_op_exit_tb: /* Always emitted via tcg_out_exit_tb. */
|
|
case INDEX_op_goto_tb: /* Always emitted via tcg_out_goto_tb. */
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
|
|
static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
|
|
{
|
|
switch (op) {
|
|
case INDEX_op_goto_ptr:
|
|
return C_O0_I1(r);
|
|
|
|
case INDEX_op_st8_i32:
|
|
case INDEX_op_st8_i64:
|
|
case INDEX_op_st16_i32:
|
|
case INDEX_op_st16_i64:
|
|
case INDEX_op_st32_i64:
|
|
case INDEX_op_st_i32:
|
|
case INDEX_op_st_i64:
|
|
return C_O0_I2(rZ, r);
|
|
|
|
case INDEX_op_brcond_i32:
|
|
case INDEX_op_brcond_i64:
|
|
return C_O0_I2(rZ, rZ);
|
|
|
|
case INDEX_op_qemu_st_i32:
|
|
case INDEX_op_qemu_st_i64:
|
|
return C_O0_I2(LZ, L);
|
|
|
|
case INDEX_op_ext8s_i32:
|
|
case INDEX_op_ext8s_i64:
|
|
case INDEX_op_ext8u_i32:
|
|
case INDEX_op_ext8u_i64:
|
|
case INDEX_op_ext16s_i32:
|
|
case INDEX_op_ext16s_i64:
|
|
case INDEX_op_ext16u_i32:
|
|
case INDEX_op_ext16u_i64:
|
|
case INDEX_op_ext32s_i64:
|
|
case INDEX_op_ext32u_i64:
|
|
case INDEX_op_extu_i32_i64:
|
|
case INDEX_op_extrl_i64_i32:
|
|
case INDEX_op_extrh_i64_i32:
|
|
case INDEX_op_ext_i32_i64:
|
|
case INDEX_op_not_i32:
|
|
case INDEX_op_not_i64:
|
|
case INDEX_op_extract_i32:
|
|
case INDEX_op_extract_i64:
|
|
case INDEX_op_bswap16_i32:
|
|
case INDEX_op_bswap16_i64:
|
|
case INDEX_op_bswap32_i32:
|
|
case INDEX_op_bswap32_i64:
|
|
case INDEX_op_bswap64_i64:
|
|
case INDEX_op_ld8s_i32:
|
|
case INDEX_op_ld8s_i64:
|
|
case INDEX_op_ld8u_i32:
|
|
case INDEX_op_ld8u_i64:
|
|
case INDEX_op_ld16s_i32:
|
|
case INDEX_op_ld16s_i64:
|
|
case INDEX_op_ld16u_i32:
|
|
case INDEX_op_ld16u_i64:
|
|
case INDEX_op_ld32s_i64:
|
|
case INDEX_op_ld32u_i64:
|
|
case INDEX_op_ld_i32:
|
|
case INDEX_op_ld_i64:
|
|
return C_O1_I1(r, r);
|
|
|
|
case INDEX_op_qemu_ld_i32:
|
|
case INDEX_op_qemu_ld_i64:
|
|
return C_O1_I1(r, L);
|
|
|
|
case INDEX_op_andc_i32:
|
|
case INDEX_op_andc_i64:
|
|
case INDEX_op_orc_i32:
|
|
case INDEX_op_orc_i64:
|
|
/*
|
|
* LoongArch insns for these ops don't have reg-imm forms, but we
|
|
* can express using andi/ori if ~constant satisfies
|
|
* TCG_CT_CONST_U12.
|
|
*/
|
|
return C_O1_I2(r, r, rC);
|
|
|
|
case INDEX_op_shl_i32:
|
|
case INDEX_op_shl_i64:
|
|
case INDEX_op_shr_i32:
|
|
case INDEX_op_shr_i64:
|
|
case INDEX_op_sar_i32:
|
|
case INDEX_op_sar_i64:
|
|
case INDEX_op_rotl_i32:
|
|
case INDEX_op_rotl_i64:
|
|
case INDEX_op_rotr_i32:
|
|
case INDEX_op_rotr_i64:
|
|
return C_O1_I2(r, r, ri);
|
|
|
|
case INDEX_op_add_i32:
|
|
case INDEX_op_add_i64:
|
|
return C_O1_I2(r, r, rI);
|
|
|
|
case INDEX_op_and_i32:
|
|
case INDEX_op_and_i64:
|
|
case INDEX_op_nor_i32:
|
|
case INDEX_op_nor_i64:
|
|
case INDEX_op_or_i32:
|
|
case INDEX_op_or_i64:
|
|
case INDEX_op_xor_i32:
|
|
case INDEX_op_xor_i64:
|
|
/* LoongArch reg-imm bitops have their imms ZERO-extended */
|
|
return C_O1_I2(r, r, rU);
|
|
|
|
case INDEX_op_clz_i32:
|
|
case INDEX_op_clz_i64:
|
|
case INDEX_op_ctz_i32:
|
|
case INDEX_op_ctz_i64:
|
|
return C_O1_I2(r, r, rW);
|
|
|
|
case INDEX_op_setcond_i32:
|
|
case INDEX_op_setcond_i64:
|
|
return C_O1_I2(r, r, rZ);
|
|
|
|
case INDEX_op_deposit_i32:
|
|
case INDEX_op_deposit_i64:
|
|
/* Must deposit into the same register as input */
|
|
return C_O1_I2(r, 0, rZ);
|
|
|
|
case INDEX_op_sub_i32:
|
|
case INDEX_op_sub_i64:
|
|
return C_O1_I2(r, rZ, rN);
|
|
|
|
case INDEX_op_mul_i32:
|
|
case INDEX_op_mul_i64:
|
|
case INDEX_op_mulsh_i32:
|
|
case INDEX_op_mulsh_i64:
|
|
case INDEX_op_muluh_i32:
|
|
case INDEX_op_muluh_i64:
|
|
case INDEX_op_div_i32:
|
|
case INDEX_op_div_i64:
|
|
case INDEX_op_divu_i32:
|
|
case INDEX_op_divu_i64:
|
|
case INDEX_op_rem_i32:
|
|
case INDEX_op_rem_i64:
|
|
case INDEX_op_remu_i32:
|
|
case INDEX_op_remu_i64:
|
|
return C_O1_I2(r, rZ, rZ);
|
|
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
|
|
static const int tcg_target_callee_save_regs[] = {
|
|
TCG_REG_S0, /* used for the global env (TCG_AREG0) */
|
|
TCG_REG_S1,
|
|
TCG_REG_S2,
|
|
TCG_REG_S3,
|
|
TCG_REG_S4,
|
|
TCG_REG_S5,
|
|
TCG_REG_S6,
|
|
TCG_REG_S7,
|
|
TCG_REG_S8,
|
|
TCG_REG_S9,
|
|
TCG_REG_RA, /* should be last for ABI compliance */
|
|
};
|
|
|
|
/* Stack frame parameters. */
|
|
#define REG_SIZE (TCG_TARGET_REG_BITS / 8)
|
|
#define SAVE_SIZE ((int)ARRAY_SIZE(tcg_target_callee_save_regs) * REG_SIZE)
|
|
#define TEMP_SIZE (CPU_TEMP_BUF_NLONGS * (int)sizeof(long))
|
|
#define FRAME_SIZE ((TCG_STATIC_CALL_ARGS_SIZE + TEMP_SIZE + SAVE_SIZE \
|
|
+ TCG_TARGET_STACK_ALIGN - 1) \
|
|
& -TCG_TARGET_STACK_ALIGN)
|
|
#define SAVE_OFS (TCG_STATIC_CALL_ARGS_SIZE + TEMP_SIZE)
|
|
|
|
/* We're expecting to be able to use an immediate for frame allocation. */
|
|
QEMU_BUILD_BUG_ON(FRAME_SIZE > 0x7ff);
|
|
|
|
/* Generate global QEMU prologue and epilogue code */
|
|
static void tcg_target_qemu_prologue(TCGContext *s)
|
|
{
|
|
int i;
|
|
|
|
tcg_set_frame(s, TCG_REG_SP, TCG_STATIC_CALL_ARGS_SIZE, TEMP_SIZE);
|
|
|
|
/* TB prologue */
|
|
tcg_out_opc_addi_d(s, TCG_REG_SP, TCG_REG_SP, -FRAME_SIZE);
|
|
for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) {
|
|
tcg_out_st(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i],
|
|
TCG_REG_SP, SAVE_OFS + i * REG_SIZE);
|
|
}
|
|
|
|
#if !defined(CONFIG_SOFTMMU)
|
|
if (USE_GUEST_BASE) {
|
|
tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base);
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
|
|
}
|
|
#endif
|
|
|
|
/* Call generated code */
|
|
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
|
|
tcg_out_opc_jirl(s, TCG_REG_ZERO, tcg_target_call_iarg_regs[1], 0);
|
|
|
|
/* Return path for goto_ptr. Set return value to 0 */
|
|
tcg_code_gen_epilogue = tcg_splitwx_to_rx(s->code_ptr);
|
|
tcg_out_mov(s, TCG_TYPE_REG, TCG_REG_A0, TCG_REG_ZERO);
|
|
|
|
/* TB epilogue */
|
|
tb_ret_addr = tcg_splitwx_to_rx(s->code_ptr);
|
|
for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) {
|
|
tcg_out_ld(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i],
|
|
TCG_REG_SP, SAVE_OFS + i * REG_SIZE);
|
|
}
|
|
|
|
tcg_out_opc_addi_d(s, TCG_REG_SP, TCG_REG_SP, FRAME_SIZE);
|
|
tcg_out_opc_jirl(s, TCG_REG_ZERO, TCG_REG_RA, 0);
|
|
}
|
|
|
|
static void tcg_target_init(TCGContext *s)
|
|
{
|
|
tcg_target_available_regs[TCG_TYPE_I32] = ALL_GENERAL_REGS;
|
|
tcg_target_available_regs[TCG_TYPE_I64] = ALL_GENERAL_REGS;
|
|
|
|
tcg_target_call_clobber_regs = ALL_GENERAL_REGS;
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S0);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S1);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S2);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S3);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S4);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S5);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S6);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S7);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S8);
|
|
tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S9);
|
|
|
|
s->reserved_regs = 0;
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_ZERO);
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP0);
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP1);
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP2);
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_SP);
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_TP);
|
|
tcg_regset_set_reg(s->reserved_regs, TCG_REG_RESERVED);
|
|
}
|
|
|
|
typedef struct {
|
|
DebugFrameHeader h;
|
|
uint8_t fde_def_cfa[4];
|
|
uint8_t fde_reg_ofs[ARRAY_SIZE(tcg_target_callee_save_regs) * 2];
|
|
} DebugFrame;
|
|
|
|
#define ELF_HOST_MACHINE EM_LOONGARCH
|
|
|
|
static const DebugFrame debug_frame = {
|
|
.h.cie.len = sizeof(DebugFrameCIE) - 4, /* length after .len member */
|
|
.h.cie.id = -1,
|
|
.h.cie.version = 1,
|
|
.h.cie.code_align = 1,
|
|
.h.cie.data_align = -(TCG_TARGET_REG_BITS / 8) & 0x7f, /* sleb128 */
|
|
.h.cie.return_column = TCG_REG_RA,
|
|
|
|
/* Total FDE size does not include the "len" member. */
|
|
.h.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, h.fde.cie_offset),
|
|
|
|
.fde_def_cfa = {
|
|
12, TCG_REG_SP, /* DW_CFA_def_cfa sp, ... */
|
|
(FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */
|
|
(FRAME_SIZE >> 7)
|
|
},
|
|
.fde_reg_ofs = {
|
|
0x80 + 23, 11, /* DW_CFA_offset, s0, -88 */
|
|
0x80 + 24, 10, /* DW_CFA_offset, s1, -80 */
|
|
0x80 + 25, 9, /* DW_CFA_offset, s2, -72 */
|
|
0x80 + 26, 8, /* DW_CFA_offset, s3, -64 */
|
|
0x80 + 27, 7, /* DW_CFA_offset, s4, -56 */
|
|
0x80 + 28, 6, /* DW_CFA_offset, s5, -48 */
|
|
0x80 + 29, 5, /* DW_CFA_offset, s6, -40 */
|
|
0x80 + 30, 4, /* DW_CFA_offset, s7, -32 */
|
|
0x80 + 31, 3, /* DW_CFA_offset, s8, -24 */
|
|
0x80 + 22, 2, /* DW_CFA_offset, s9, -16 */
|
|
0x80 + 1 , 1, /* DW_CFA_offset, ra, -8 */
|
|
}
|
|
};
|
|
|
|
void tcg_register_jit(const void *buf, size_t buf_size)
|
|
{
|
|
tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame));
|
|
}
|