diff options
Diffstat (limited to 'tcg/loongarch64/tcg-target.c.inc')
| -rw-r--r-- | tcg/loongarch64/tcg-target.c.inc | 2408 |
1 files changed, 2408 insertions, 0 deletions
diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc new file mode 100644 index 0000000000..69c5b8ac4f --- /dev/null +++ b/tcg/loongarch64/tcg-target.c.inc @@ -0,0 +1,2408 @@ +/* + * Tiny Code Generator for QEMU + * + * Copyright (c) 2021 WANG Xuerui <git@xen0n.name> + * + * Based on tcg/riscv/tcg-target.c.inc + * + * Copyright (c) 2018 SiFive, Inc + * Copyright (c) 2008-2009 Arnaud Patard <arnaud.patard@rtp-net.org> + * Copyright (c) 2009 Aurelien Jarno <aurelien@aurel32.net> + * Copyright (c) 2008 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "../tcg-ldst.c.inc" +#include <asm/hwcap.h> + +#ifdef CONFIG_DEBUG_TCG +static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { + "zero", + "ra", + "tp", + "sp", + "a0", + "a1", + "a2", + "a3", + "a4", + "a5", + "a6", + "a7", + "t0", + "t1", + "t2", + "t3", + "t4", + "t5", + "t6", + "t7", + "t8", + "r21", /* reserved in the LP64* ABI, hence no ABI name */ + "s9", + "s0", + "s1", + "s2", + "s3", + "s4", + "s5", + "s6", + "s7", + "s8", + "vr0", + "vr1", + "vr2", + "vr3", + "vr4", + "vr5", + "vr6", + "vr7", + "vr8", + "vr9", + "vr10", + "vr11", + "vr12", + "vr13", + "vr14", + "vr15", + "vr16", + "vr17", + "vr18", + "vr19", + "vr20", + "vr21", + "vr22", + "vr23", + "vr24", + "vr25", + "vr26", + "vr27", + "vr28", + "vr29", + "vr30", + "vr31", +}; +#endif + +static const int tcg_target_reg_alloc_order[] = { + /* Registers preserved across calls */ + /* TCG_REG_S0 reserved for 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, + + /* Registers (potentially) clobbered across calls */ + TCG_REG_T0, + TCG_REG_T1, + TCG_REG_T2, + TCG_REG_T3, + TCG_REG_T4, + TCG_REG_T5, + TCG_REG_T6, + TCG_REG_T7, + TCG_REG_T8, + + /* Argument registers, opposite order of allocation. */ + TCG_REG_A7, + TCG_REG_A6, + TCG_REG_A5, + TCG_REG_A4, + TCG_REG_A3, + TCG_REG_A2, + TCG_REG_A1, + TCG_REG_A0, + + /* Vector registers */ + TCG_REG_V0, TCG_REG_V1, TCG_REG_V2, TCG_REG_V3, + TCG_REG_V4, TCG_REG_V5, TCG_REG_V6, TCG_REG_V7, + TCG_REG_V8, TCG_REG_V9, TCG_REG_V10, TCG_REG_V11, + TCG_REG_V12, TCG_REG_V13, TCG_REG_V14, TCG_REG_V15, + TCG_REG_V16, TCG_REG_V17, TCG_REG_V18, TCG_REG_V19, + TCG_REG_V20, TCG_REG_V21, TCG_REG_V22, TCG_REG_V23, + /* V24 - V31 are caller-saved, and skipped. */ +}; + +static const int tcg_target_call_iarg_regs[] = { + TCG_REG_A0, + TCG_REG_A1, + TCG_REG_A2, + TCG_REG_A3, + TCG_REG_A4, + TCG_REG_A5, + TCG_REG_A6, + TCG_REG_A7, +}; + +static TCGReg tcg_target_call_oarg_reg(TCGCallReturnKind kind, int slot) +{ + tcg_debug_assert(kind == TCG_CALL_RET_NORMAL); + tcg_debug_assert(slot >= 0 && slot <= 1); + return TCG_REG_A0 + slot; +} + +#define TCG_GUEST_BASE_REG TCG_REG_S1 + +#define TCG_CT_CONST_ZERO 0x100 +#define TCG_CT_CONST_S12 0x200 +#define TCG_CT_CONST_S32 0x400 +#define TCG_CT_CONST_U12 0x800 +#define TCG_CT_CONST_C12 0x1000 +#define TCG_CT_CONST_WSZ 0x2000 +#define TCG_CT_CONST_VCMP 0x4000 +#define TCG_CT_CONST_VADD 0x8000 + +#define ALL_GENERAL_REGS MAKE_64BIT_MASK(0, 32) +#define ALL_VECTOR_REGS MAKE_64BIT_MASK(32, 32) + +static inline tcg_target_long sextreg(tcg_target_long val, int pos, int len) +{ + return sextract64(val, pos, len); +} + +/* test if a constant matches the constraint */ +static bool tcg_target_const_match(int64_t val, int ct, + TCGType type, TCGCond cond, int vece) +{ + if (ct & TCG_CT_CONST) { + return true; + } + if ((ct & TCG_CT_CONST_ZERO) && val == 0) { + return true; + } + if ((ct & TCG_CT_CONST_S12) && val == sextreg(val, 0, 12)) { + return true; + } + if ((ct & TCG_CT_CONST_S32) && val == (int32_t)val) { + return true; + } + if ((ct & TCG_CT_CONST_U12) && val >= 0 && val <= 0xfff) { + return true; + } + if ((ct & TCG_CT_CONST_C12) && ~val >= 0 && ~val <= 0xfff) { + return true; + } + if ((ct & TCG_CT_CONST_WSZ) && val == (type == TCG_TYPE_I32 ? 32 : 64)) { + return true; + } + int64_t vec_val = sextract64(val, 0, 8 << vece); + if ((ct & TCG_CT_CONST_VCMP) && -0x10 <= vec_val && vec_val <= 0x1f) { + return true; + } + if ((ct & TCG_CT_CONST_VADD) && -0x1f <= vec_val && vec_val <= 0x1f) { + return true; + } + return false; +} + +/* + * Relocations + */ + +/* + * Relocation records defined in LoongArch ELF psABI v1.00 is way too + * complicated; a whopping stack machine is needed to stuff the fields, at + * the very least one SOP_PUSH and one SOP_POP (of the correct format) are + * needed. + * + * Hence, define our own simpler relocation types. Numbers are chosen as to + * not collide with potential future additions to the true ELF relocation + * type enum. + */ + +/* Field Sk16, shifted right by 2; suitable for conditional jumps */ +#define R_LOONGARCH_BR_SK16 256 +/* Field Sd10k16, shifted right by 2; suitable for B and BL */ +#define R_LOONGARCH_BR_SD10K16 257 + +static bool reloc_br_sk16(tcg_insn_unit *src_rw, const tcg_insn_unit *target) +{ + const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw); + intptr_t offset = (intptr_t)target - (intptr_t)src_rx; + + tcg_debug_assert((offset & 3) == 0); + offset >>= 2; + if (offset == sextreg(offset, 0, 16)) { + *src_rw = deposit64(*src_rw, 10, 16, offset); + return true; + } + + return false; +} + +static bool reloc_br_sd10k16(tcg_insn_unit *src_rw, + const tcg_insn_unit *target) +{ + const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw); + intptr_t offset = (intptr_t)target - (intptr_t)src_rx; + + tcg_debug_assert((offset & 3) == 0); + offset >>= 2; + if (offset == sextreg(offset, 0, 26)) { + *src_rw = deposit64(*src_rw, 0, 10, offset >> 16); /* slot d10 */ + *src_rw = deposit64(*src_rw, 10, 16, offset); /* slot k16 */ + return true; + } + + return false; +} + +static bool patch_reloc(tcg_insn_unit *code_ptr, int type, + intptr_t value, intptr_t addend) +{ + tcg_debug_assert(addend == 0); + switch (type) { + case R_LOONGARCH_BR_SK16: + return reloc_br_sk16(code_ptr, (tcg_insn_unit *)value); + case R_LOONGARCH_BR_SD10K16: + return reloc_br_sd10k16(code_ptr, (tcg_insn_unit *)value); + default: + g_assert_not_reached(); + } +} + +#include "tcg-insn-defs.c.inc" + +/* + * TCG intrinsics + */ + +static void tcg_out_mb(TCGContext *s, TCGArg a0) +{ + /* Baseline LoongArch only has the full barrier, unfortunately. */ + tcg_out_opc_dbar(s, 0); +} + +static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg) +{ + if (ret == arg) { + return true; + } + switch (type) { + case TCG_TYPE_I32: + case TCG_TYPE_I64: + /* + * Conventional register-register move used in LoongArch is + * `or dst, src, zero`. + */ + tcg_out_opc_or(s, ret, arg, TCG_REG_ZERO); + break; + case TCG_TYPE_V128: + tcg_out_opc_vori_b(s, ret, arg, 0); + break; + default: + g_assert_not_reached(); + } + return true; +} + +/* Loads a 32-bit immediate into rd, sign-extended. */ +static void tcg_out_movi_i32(TCGContext *s, TCGReg rd, int32_t val) +{ + tcg_target_long lo = sextreg(val, 0, 12); + tcg_target_long hi12 = sextreg(val, 12, 20); + + /* Single-instruction cases. */ + if (hi12 == 0) { + /* val fits in uimm12: ori rd, zero, val */ + tcg_out_opc_ori(s, rd, TCG_REG_ZERO, val); + return; + } + if (hi12 == sextreg(lo, 12, 20)) { + /* val fits in simm12: addi.w rd, zero, val */ + tcg_out_opc_addi_w(s, rd, TCG_REG_ZERO, val); + return; + } + + /* High bits must be set; load with lu12i.w + optional ori. */ + tcg_out_opc_lu12i_w(s, rd, hi12); + if (lo != 0) { + tcg_out_opc_ori(s, rd, rd, lo & 0xfff); + } +} + +static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg rd, + tcg_target_long val) +{ + /* + * LoongArch conventionally loads 64-bit immediates in at most 4 steps, + * with dedicated instructions for filling the respective bitfields + * below: + * + * 6 5 4 3 + * 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 + * +-----------------------+---------------------------------------+... + * | hi52 | hi32 | + * +-----------------------+---------------------------------------+... + * 3 2 1 + * 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 + * ...+-------------------------------------+-------------------------+ + * | hi12 | lo | + * ...+-------------------------------------+-------------------------+ + * + * Check if val belong to one of the several fast cases, before falling + * back to the slow path. + */ + + intptr_t pc_offset; + tcg_target_long val_lo, val_hi, pc_hi, offset_hi; + tcg_target_long hi12, hi32, hi52; + + /* Value fits in signed i32. */ + if (type == TCG_TYPE_I32 || val == (int32_t)val) { + tcg_out_movi_i32(s, rd, val); + return; + } + + /* PC-relative cases. */ + pc_offset = tcg_pcrel_diff(s, (void *)val); + if (pc_offset == sextreg(pc_offset, 0, 22) && (pc_offset & 3) == 0) { + /* Single pcaddu2i. */ + tcg_out_opc_pcaddu2i(s, rd, pc_offset >> 2); + return; + } + + if (pc_offset == (int32_t)pc_offset) { + /* Offset within 32 bits; load with pcalau12i + ori. */ + val_lo = sextreg(val, 0, 12); + val_hi = val >> 12; + pc_hi = (val - pc_offset) >> 12; + offset_hi = val_hi - pc_hi; + + tcg_debug_assert(offset_hi == sextreg(offset_hi, 0, 20)); + tcg_out_opc_pcalau12i(s, rd, offset_hi); + if (val_lo != 0) { + tcg_out_opc_ori(s, rd, rd, val_lo & 0xfff); + } + return; + } + + hi12 = sextreg(val, 12, 20); + hi32 = sextreg(val, 32, 20); + hi52 = sextreg(val, 52, 12); + + /* Single cu52i.d case. */ + if ((hi52 != 0) && (ctz64(val) >= 52)) { + tcg_out_opc_cu52i_d(s, rd, TCG_REG_ZERO, hi52); + return; + } + + /* Slow path. Initialize the low 32 bits, then concat high bits. */ + tcg_out_movi_i32(s, rd, val); + + /* Load hi32 and hi52 explicitly when they are unexpected values. */ + if (hi32 != sextreg(hi12, 20, 20)) { + tcg_out_opc_cu32i_d(s, rd, hi32); + } + + if (hi52 != sextreg(hi32, 20, 12)) { + tcg_out_opc_cu52i_d(s, rd, rd, hi52); + } +} + +static void tcg_out_addi(TCGContext *s, TCGType type, TCGReg rd, + TCGReg rs, tcg_target_long imm) +{ + tcg_target_long lo12 = sextreg(imm, 0, 12); + tcg_target_long hi16 = sextreg(imm - lo12, 16, 16); + + /* + * Note that there's a hole in between hi16 and lo12: + * + * 3 2 1 0 + * 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 + * ...+-------------------------------+-------+-----------------------+ + * | hi16 | | lo12 | + * ...+-------------------------------+-------+-----------------------+ + * + * For bits within that hole, it's more efficient to use LU12I and ADD. + */ + if (imm == (hi16 << 16) + lo12) { + if (hi16) { + tcg_out_opc_addu16i_d(s, rd, rs, hi16); + rs = rd; + } + if (type == TCG_TYPE_I32) { + tcg_out_opc_addi_w(s, rd, rs, lo12); + } else if (lo12) { + tcg_out_opc_addi_d(s, rd, rs, lo12); + } else { + tcg_out_mov(s, type, rd, rs); + } + } else { + tcg_out_movi(s, type, TCG_REG_TMP0, imm); + if (type == TCG_TYPE_I32) { + tcg_out_opc_add_w(s, rd, rs, TCG_REG_TMP0); + } else { + tcg_out_opc_add_d(s, rd, rs, TCG_REG_TMP0); + } + } +} + +static bool tcg_out_xchg(TCGContext *s, TCGType type, TCGReg r1, TCGReg r2) +{ + return false; +} + +static void tcg_out_addi_ptr(TCGContext *s, TCGReg rd, TCGReg rs, + tcg_target_long imm) +{ + /* This function is only used for passing structs by reference. */ + g_assert_not_reached(); +} + +static void tcg_out_ext8u(TCGContext *s, TCGReg ret, TCGReg arg) +{ + tcg_out_opc_andi(s, ret, arg, 0xff); +} + +static void tcg_out_ext16u(TCGContext *s, TCGReg ret, TCGReg arg) +{ + tcg_out_opc_bstrpick_w(s, ret, arg, 0, 15); +} + +static void tcg_out_ext32u(TCGContext *s, TCGReg ret, TCGReg arg) +{ + tcg_out_opc_bstrpick_d(s, ret, arg, 0, 31); +} + +static void tcg_out_ext8s(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg) +{ + tcg_out_opc_sext_b(s, ret, arg); +} + +static void tcg_out_ext16s(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg) +{ + tcg_out_opc_sext_h(s, ret, arg); +} + +static void tcg_out_ext32s(TCGContext *s, TCGReg ret, TCGReg arg) +{ + tcg_out_opc_addi_w(s, ret, arg, 0); +} + +static void tcg_out_exts_i32_i64(TCGContext *s, TCGReg ret, TCGReg arg) +{ + if (ret != arg) { + tcg_out_ext32s(s, ret, arg); + } +} + +static void tcg_out_extu_i32_i64(TCGContext *s, TCGReg ret, TCGReg arg) +{ + tcg_out_ext32u(s, ret, arg); +} + +static void tcg_out_extrl_i64_i32(TCGContext *s, TCGReg ret, TCGReg arg) +{ + tcg_out_ext32s(s, ret, arg); +} + +static void tcg_out_clzctz(TCGContext *s, LoongArchInsn opc, + TCGReg a0, TCGReg a1, TCGReg a2, + 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 */ + tcg_out32(s, encode_dj_insn(opc, a0, a1)); + return; + } + + tcg_out32(s, encode_dj_insn(opc, TCG_REG_TMP0, a1)); + /* a0 = a1 ? REG_TMP0 : a2 */ + tcg_out_opc_maskeqz(s, TCG_REG_TMP0, TCG_REG_TMP0, a1); + tcg_out_opc_masknez(s, a0, a2, a1); + tcg_out_opc_or(s, a0, TCG_REG_TMP0, a0); +} + +#define SETCOND_INV TCG_TARGET_NB_REGS +#define SETCOND_NEZ (SETCOND_INV << 1) +#define SETCOND_FLAGS (SETCOND_INV | SETCOND_NEZ) + +static int tcg_out_setcond_int(TCGContext *s, TCGCond cond, TCGReg ret, + TCGReg arg1, tcg_target_long arg2, bool c2) +{ + int flags = 0; + + switch (cond) { + case TCG_COND_EQ: /* -> NE */ + case TCG_COND_GE: /* -> LT */ + case TCG_COND_GEU: /* -> LTU */ + case TCG_COND_GT: /* -> LE */ + case TCG_COND_GTU: /* -> LEU */ + cond = tcg_invert_cond(cond); + flags ^= SETCOND_INV; + break; + default: + break; + } + + switch (cond) { + case TCG_COND_LE: + case TCG_COND_LEU: + /* + * If we have a constant input, the most efficient way to implement + * LE is by adding 1 and using LT. Watch out for wrap around for LEU. + * We don't need to care for this for LE because the constant input + * is still constrained to int32_t, and INT32_MAX+1 is representable + * in the 64-bit temporary register. + */ + if (c2) { + if (cond == TCG_COND_LEU) { + /* unsigned <= -1 is true */ + if (arg2 == -1) { + tcg_out_movi(s, TCG_TYPE_REG, ret, !(flags & SETCOND_INV)); + return ret; + } + cond = TCG_COND_LTU; + } else { + cond = TCG_COND_LT; + } + arg2 += 1; + } else { + TCGReg tmp = arg2; + arg2 = arg1; + arg1 = tmp; + cond = tcg_swap_cond(cond); /* LE -> GE */ + cond = tcg_invert_cond(cond); /* GE -> LT */ + flags ^= SETCOND_INV; + } + break; + default: + break; + } + + switch (cond) { + case TCG_COND_NE: + flags |= SETCOND_NEZ; + if (!c2) { + tcg_out_opc_xor(s, ret, arg1, arg2); + } else if (arg2 == 0) { + ret = arg1; + } else if (arg2 >= 0 && arg2 <= 0xfff) { + tcg_out_opc_xori(s, ret, arg1, arg2); + } else { + tcg_out_addi(s, TCG_TYPE_REG, ret, arg1, -arg2); + } + break; + + case TCG_COND_LT: + case TCG_COND_LTU: + if (c2) { + if (arg2 >= -0x800 && arg2 <= 0x7ff) { + if (cond == TCG_COND_LT) { + tcg_out_opc_slti(s, ret, arg1, arg2); + } else { + tcg_out_opc_sltui(s, ret, arg1, arg2); + } + break; + } + tcg_out_movi(s, TCG_TYPE_REG, TCG_REG_TMP0, arg2); + arg2 = TCG_REG_TMP0; + } + if (cond == TCG_COND_LT) { + tcg_out_opc_slt(s, ret, arg1, arg2); + } else { + tcg_out_opc_sltu(s, ret, arg1, arg2); + } + break; + + default: + g_assert_not_reached(); + break; + } + + return ret | flags; +} + +static void tcg_out_setcond(TCGContext *s, TCGCond cond, TCGReg ret, + TCGReg arg1, tcg_target_long arg2, bool c2) +{ + int tmpflags = tcg_out_setcond_int(s, cond, ret, arg1, arg2, c2); + + if (tmpflags != ret) { + TCGReg tmp = tmpflags & ~SETCOND_FLAGS; + + switch (tmpflags & SETCOND_FLAGS) { + case SETCOND_INV: + /* Intermediate result is boolean: simply invert. */ + tcg_out_opc_xori(s, ret, tmp, 1); + break; + case SETCOND_NEZ: + /* Intermediate result is zero/non-zero: test != 0. */ + tcg_out_opc_sltu(s, ret, TCG_REG_ZERO, tmp); + break; + case SETCOND_NEZ | SETCOND_INV: + /* Intermediate result is zero/non-zero: test == 0. */ + tcg_out_opc_sltui(s, ret, tmp, 1); + break; + default: + g_assert_not_reached(); + } + } +} + +static void tcg_out_movcond(TCGContext *s, TCGCond cond, TCGReg ret, + TCGReg c1, tcg_target_long c2, bool const2, + TCGReg v1, TCGReg v2) +{ + int tmpflags = tcg_out_setcond_int(s, cond, TCG_REG_TMP0, c1, c2, const2); + TCGReg t; + + /* Standardize the test below to t != 0. */ + if (tmpflags & SETCOND_INV) { + t = v1, v1 = v2, v2 = t; + } + + t = tmpflags & ~SETCOND_FLAGS; + if (v1 == TCG_REG_ZERO) { + tcg_out_opc_masknez(s, ret, v2, t); + } else if (v2 == TCG_REG_ZERO) { + tcg_out_opc_maskeqz(s, ret, v1, t); + } else { + tcg_out_opc_masknez(s, TCG_REG_TMP2, v2, t); /* t ? 0 : v2 */ + tcg_out_opc_maskeqz(s, TCG_REG_TMP1, v1, t); /* t ? v1 : 0 */ + tcg_out_opc_or(s, ret, TCG_REG_TMP1, TCG_REG_TMP2); + } +} + +/* + * 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 = tcg_pcrel_diff(s, (void *)offset); + + 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 + */ + +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); +} + +static const TCGLdstHelperParam ldst_helper_param = { + .ntmp = 1, .tmp = { TCG_REG_TMP0 } +}; + +static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l) +{ + MemOp opc = get_memop(l->oi); + + /* resolve label address */ + if (!reloc_br_sk16(l->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) { + return false; + } + + tcg_out_ld_helper_args(s, l, &ldst_helper_param); + tcg_out_call_int(s, qemu_ld_helpers[opc & MO_SIZE], false); + tcg_out_ld_helper_ret(s, l, false, &ldst_helper_param); + return tcg_out_goto(s, l->raddr); +} + +static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l) +{ + MemOp opc = get_memop(l->oi); + + /* resolve label address */ + if (!reloc_br_sk16(l->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) { + return false; + } + + tcg_out_st_helper_args(s, l, &ldst_helper_param); + tcg_out_call_int(s, qemu_st_helpers[opc & MO_SIZE], false); + return tcg_out_goto(s, l->raddr); +} + +typedef struct { + TCGReg base; + TCGReg index; + TCGAtomAlign aa; +} HostAddress; + +bool tcg_target_has_memory_bswap(MemOp memop) +{ + return false; +} + +/* We expect to use a 12-bit negative offset from ENV. */ +#define MIN_TLB_MASK_TABLE_OFS -(1 << 11) + +/* + * For system-mode, perform the TLB load and compare. + * For user-mode, perform any required alignment tests. + * In both cases, return a TCGLabelQemuLdst structure if the slow path + * is required and fill in @h with the host address for the fast path. + */ +static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h, + TCGReg addr_reg, MemOpIdx oi, + bool is_ld) +{ + TCGType addr_type = s->addr_type; + TCGLabelQemuLdst *ldst = NULL; + MemOp opc = get_memop(oi); + MemOp a_bits; + + h->aa = atom_and_align_for_opc(s, opc, MO_ATOM_IFALIGN, false); + a_bits = h->aa.align; + + if (tcg_use_softmmu) { + unsigned s_bits = opc & MO_SIZE; + int mem_index = get_mmuidx(oi); + int fast_ofs = tlb_mask_table_ofs(s, mem_index); + int mask_ofs = fast_ofs + offsetof(CPUTLBDescFast, mask); + int table_ofs = fast_ofs + offsetof(CPUTLBDescFast, table); + + ldst = new_ldst_label(s); + ldst->is_ld = is_ld; + ldst->oi = oi; + ldst->addrlo_reg = addr_reg; + + 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, addr_reg, + s->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. */ + QEMU_BUILD_BUG_ON(HOST_BIG_ENDIAN); + tcg_out_ld(s, addr_type, TCG_REG_TMP0, TCG_REG_TMP2, + is_ld ? offsetof(CPUTLBEntry, addr_read) + : offsetof(CPUTLBEntry, addr_write)); + tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP2, TCG_REG_TMP2, + offsetof(CPUTLBEntry, addend)); + + /* + * For aligned accesses, we check the first byte and include the + * alignment bits within the address. For unaligned access, we + * check that we don't cross pages using the address of the last + * byte of the access. + */ + if (a_bits < s_bits) { + unsigned a_mask = (1u << a_bits) - 1; + unsigned s_mask = (1u << s_bits) - 1; + tcg_out_addi(s, addr_type, TCG_REG_TMP1, addr_reg, s_mask - a_mask); + } else { + tcg_out_mov(s, addr_type, TCG_REG_TMP1, addr_reg); + } + tcg_out_opc_bstrins_d(s, TCG_REG_TMP1, TCG_REG_ZERO, + a_bits, s->page_bits - 1); + + /* Compare masked address with the TLB entry. */ + ldst->label_ptr[0] = s->code_ptr; + tcg_out_opc_bne(s, TCG_REG_TMP0, TCG_REG_TMP1, 0); + + h->index = TCG_REG_TMP2; + } else { + if (a_bits) { + ldst = new_ldst_label(s); + + ldst->is_ld = is_ld; + ldst->oi = oi; + ldst->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. + */ + tcg_out_opc_bstrpick_d(s, TCG_REG_TMP1, addr_reg, 0, a_bits - 1); + + ldst->label_ptr[0] = s->code_ptr; + tcg_out_opc_bne(s, TCG_REG_TMP1, TCG_REG_ZERO, 0); + } + + h->index = guest_base ? TCG_GUEST_BASE_REG : TCG_REG_ZERO; + } + + if (addr_type == TCG_TYPE_I32) { + h->base = TCG_REG_TMP0; + tcg_out_ext32u(s, h->base, addr_reg); + } else { + h->base = addr_reg; + } + + return ldst; +} + +static void tcg_out_qemu_ld_indexed(TCGContext *s, MemOp opc, TCGType type, + TCGReg rd, HostAddress h) +{ + /* 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, h.base, h.index); + break; + case MO_SB: + tcg_out_opc_ldx_b(s, rd, h.base, h.index); + break; + case MO_UW: + tcg_out_opc_ldx_hu(s, rd, h.base, h.index); + break; + case MO_SW: + tcg_out_opc_ldx_h(s, rd, h.base, h.index); + break; + case MO_UL: + if (type == TCG_TYPE_I64) { + tcg_out_opc_ldx_wu(s, rd, h.base, h.index); + break; + } + /* fallthrough */ + case MO_SL: + tcg_out_opc_ldx_w(s, rd, h.base, h.index); + break; + case MO_UQ: + tcg_out_opc_ldx_d(s, rd, h.base, h.index); + break; + default: + g_assert_not_reached(); + } +} + +static void tcg_out_qemu_ld(TCGContext *s, TCGReg data_reg, TCGReg addr_reg, + MemOpIdx oi, TCGType data_type) +{ + TCGLabelQemuLdst *ldst; + HostAddress h; + + ldst = prepare_host_addr(s, &h, addr_reg, oi, true); + tcg_out_qemu_ld_indexed(s, get_memop(oi), data_type, data_reg, h); + + if (ldst) { + ldst->type = data_type; + ldst->datalo_reg = data_reg; + ldst->raddr = tcg_splitwx_to_rx(s->code_ptr); + } +} + +static void tcg_out_qemu_st_indexed(TCGContext *s, MemOp opc, + TCGReg rd, HostAddress h) +{ + /* 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, rd, h.base, h.index); + break; + case MO_16: + tcg_out_opc_stx_h(s, rd, h.base, h.index); + break; + case MO_32: + tcg_out_opc_stx_w(s, rd, h.base, h.index); + break; + case MO_64: + tcg_out_opc_stx_d(s, rd, h.base, h.index); + break; + default: + g_assert_not_reached(); + } +} + +static void tcg_out_qemu_st(TCGContext *s, TCGReg data_reg, TCGReg addr_reg, + MemOpIdx oi, TCGType data_type) +{ + TCGLabelQemuLdst *ldst; + HostAddress h; + + ldst = prepare_host_addr(s, &h, addr_reg, oi, false); + tcg_out_qemu_st_indexed(s, get_memop(oi), data_reg, h); + + if (ldst) { + ldst->type = data_type; + ldst->datalo_reg = data_reg; + ldst->raddr = tcg_splitwx_to_rx(s->code_ptr); + } +} + +static void tcg_out_qemu_ldst_i128(TCGContext *s, TCGReg data_lo, TCGReg data_hi, + TCGReg addr_reg, MemOpIdx oi, bool is_ld) +{ + TCGLabelQemuLdst *ldst; + HostAddress h; + + ldst = prepare_host_addr(s, &h, addr_reg, oi, is_ld); + + if (h.aa.atom == MO_128) { + /* + * Use VLDX/VSTX when 128-bit atomicity is required. + * If address is aligned to 16-bytes, the 128-bit load/store is atomic. + */ + if (is_ld) { + tcg_out_opc_vldx(s, TCG_VEC_TMP0, h.base, h.index); + tcg_out_opc_vpickve2gr_d(s, data_lo, TCG_VEC_TMP0, 0); + tcg_out_opc_vpickve2gr_d(s, data_hi, TCG_VEC_TMP0, 1); + } else { + tcg_out_opc_vinsgr2vr_d(s, TCG_VEC_TMP0, data_lo, 0); + tcg_out_opc_vinsgr2vr_d(s, TCG_VEC_TMP0, data_hi, 1); + tcg_out_opc_vstx(s, TCG_VEC_TMP0, h.base, h.index); + } + } else { + /* Otherwise use a pair of LD/ST. */ + TCGReg base = h.base; + if (h.index != TCG_REG_ZERO) { + base = TCG_REG_TMP0; + tcg_out_opc_add_d(s, base, h.base, h.index); + } + if (is_ld) { + tcg_debug_assert(base != data_lo); + tcg_out_opc_ld_d(s, data_lo, base, 0); + tcg_out_opc_ld_d(s, data_hi, base, 8); + } else { + tcg_out_opc_st_d(s, data_lo, base, 0); + tcg_out_opc_st_d(s, data_hi, base, 8); + } + } + + if (ldst) { + ldst->type = TCG_TYPE_I128; + ldst->datalo_reg = data_lo; + ldst->datahi_reg = data_hi; + ldst->raddr = tcg_splitwx_to_rx(s->code_ptr); + } +} + +/* + * 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) +{ + /* + * Direct branch, or load indirect address, to be patched + * by tb_target_set_jmp_target. Check indirect load offset + * in range early, regardless of direct branch distance, + * via assert within tcg_out_opc_pcaddu2i. + */ + uintptr_t i_addr = get_jmp_target_addr(s, which); + intptr_t i_disp = tcg_pcrel_diff(s, (void *)i_addr); + + set_jmp_insn_offset(s, which); + tcg_out_opc_pcaddu2i(s, TCG_REG_TMP0, i_disp >> 2); + + /* Finish the load and indirect branch. */ + tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP0, TCG_REG_TMP0, 0); + tcg_out_opc_jirl(s, TCG_REG_ZERO, TCG_REG_TMP0, 0); + set_jmp_reset_offset(s, which); +} + +void tb_target_set_jmp_target(const TranslationBlock *tb, int n, + uintptr_t jmp_rx, uintptr_t jmp_rw) +{ + uintptr_t d_addr = tb->jmp_target_addr[n]; + ptrdiff_t d_disp = (ptrdiff_t)(d_addr - jmp_rx) >> 2; + tcg_insn_unit insn; + + /* Either directly branch, or load slot address for indirect branch. */ + if (d_disp == sextreg(d_disp, 0, 26)) { + insn = encode_sd10k16_insn(OPC_B, d_disp); + } else { + uintptr_t i_addr = (uintptr_t)&tb->jmp_target_addr[n]; + intptr_t i_disp = i_addr - jmp_rx; + insn = encode_dsj20_insn(OPC_PCADDU2I, TCG_REG_TMP0, i_disp >> 2); + } + + qatomic_set((tcg_insn_unit *)jmp_rw, insn); + flush_idcache_range(jmp_rx, jmp_rw, 4); +} + +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]; + TCGArg a3 = args[3]; + 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_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, TCG_TYPE_REG, 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_addi(s, TCG_TYPE_I32, a0, a1, a2); + } else { + tcg_out_opc_add_w(s, a0, a1, a2); + } + break; + case INDEX_op_add_i64: + if (c2) { + tcg_out_addi(s, TCG_TYPE_I64, a0, a1, a2); + } else { + tcg_out_opc_add_d(s, a0, a1, a2); + } + break; + + case INDEX_op_sub_i32: + if (c2) { + tcg_out_addi(s, TCG_TYPE_I32, a0, a1, -a2); + } else { + tcg_out_opc_sub_w(s, a0, a1, a2); + } + break; + case INDEX_op_sub_i64: + if (c2) { + tcg_out_addi(s, TCG_TYPE_I64, a0, a1, -a2); + } else { + tcg_out_opc_sub_d(s, a0, a1, a2); + } + break; + + case INDEX_op_neg_i32: + tcg_out_opc_sub_w(s, a0, TCG_REG_ZERO, a1); + break; + case INDEX_op_neg_i64: + tcg_out_opc_sub_d(s, a0, TCG_REG_ZERO, a1); + 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_movcond_i32: + case INDEX_op_movcond_i64: + tcg_out_movcond(s, args[5], a0, a1, a2, c2, args[3], args[4]); + 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_a32_i32: + case INDEX_op_qemu_ld_a64_i32: + tcg_out_qemu_ld(s, a0, a1, a2, TCG_TYPE_I32); + break; + case INDEX_op_qemu_ld_a32_i64: + case INDEX_op_qemu_ld_a64_i64: + tcg_out_qemu_ld(s, a0, a1, a2, TCG_TYPE_I64); + break; + case INDEX_op_qemu_ld_a32_i128: + case INDEX_op_qemu_ld_a64_i128: + tcg_out_qemu_ldst_i128(s, a0, a1, a2, a3, true); + break; + case INDEX_op_qemu_st_a32_i32: + case INDEX_op_qemu_st_a64_i32: + tcg_out_qemu_st(s, a0, a1, a2, TCG_TYPE_I32); + break; + case INDEX_op_qemu_st_a32_i64: + case INDEX_op_qemu_st_a64_i64: + tcg_out_qemu_st(s, a0, a1, a2, TCG_TYPE_I64); + break; + case INDEX_op_qemu_st_a32_i128: + case INDEX_op_qemu_st_a64_i128: + tcg_out_qemu_ldst_i128(s, a0, a1, a2, a3, false); + 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. */ + case INDEX_op_ext8s_i32: /* Always emitted via tcg_reg_alloc_op. */ + 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_ext_i32_i64: + case INDEX_op_extu_i32_i64: + case INDEX_op_extrl_i64_i32: + default: + g_assert_not_reached(); + } +} + +static bool tcg_out_dup_vec(TCGContext *s, TCGType type, unsigned vece, + TCGReg rd, TCGReg rs) +{ + switch (vece) { + case MO_8: + tcg_out_opc_vreplgr2vr_b(s, rd, rs); + break; + case MO_16: + tcg_out_opc_vreplgr2vr_h(s, rd, rs); + break; + case MO_32: + tcg_out_opc_vreplgr2vr_w(s, rd, rs); + break; + case MO_64: + tcg_out_opc_vreplgr2vr_d(s, rd, rs); + break; + default: + g_assert_not_reached(); + } + return true; +} + +static bool tcg_out_dupm_vec(TCGContext *s, TCGType type, unsigned vece, + TCGReg r, TCGReg base, intptr_t offset) +{ + /* Handle imm overflow and division (vldrepl.d imm is divided by 8) */ + if (offset < -0x800 || offset > 0x7ff || \ + (offset & ((1 << vece) - 1)) != 0) { + tcg_out_addi(s, TCG_TYPE_I64, TCG_REG_TMP0, base, offset); + base = TCG_REG_TMP0; + offset = 0; + } + offset >>= vece; + + switch (vece) { + case MO_8: + tcg_out_opc_vldrepl_b(s, r, base, offset); + break; + case MO_16: + tcg_out_opc_vldrepl_h(s, r, base, offset); + break; + case MO_32: + tcg_out_opc_vldrepl_w(s, r, base, offset); + break; + case MO_64: + tcg_out_opc_vldrepl_d(s, r, base, offset); + break; + default: + g_assert_not_reached(); + } + return true; +} + +static void tcg_out_dupi_vec(TCGContext *s, TCGType type, unsigned vece, + TCGReg rd, int64_t v64) +{ + /* Try vldi if imm can fit */ + int64_t value = sextract64(v64, 0, 8 << vece); + if (-0x200 <= value && value <= 0x1FF) { + uint32_t imm = (vece << 10) | ((uint32_t)v64 & 0x3FF); + tcg_out_opc_vldi(s, rd, imm); + return; + } + + /* TODO: vldi patterns when imm 12 is set */ + + /* Fallback to vreplgr2vr */ + tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_TMP0, value); + switch (vece) { + case MO_8: + tcg_out_opc_vreplgr2vr_b(s, rd, TCG_REG_TMP0); + break; + case MO_16: + tcg_out_opc_vreplgr2vr_h(s, rd, TCG_REG_TMP0); + break; + case MO_32: + tcg_out_opc_vreplgr2vr_w(s, rd, TCG_REG_TMP0); + break; + case MO_64: + tcg_out_opc_vreplgr2vr_d(s, rd, TCG_REG_TMP0); + break; + default: + g_assert_not_reached(); + } +} + +static void tcg_out_addsub_vec(TCGContext *s, unsigned vece, const TCGArg a0, + const TCGArg a1, const TCGArg a2, + bool a2_is_const, bool is_add) +{ + static const LoongArchInsn add_vec_insn[4] = { + OPC_VADD_B, OPC_VADD_H, OPC_VADD_W, OPC_VADD_D + }; + static const LoongArchInsn add_vec_imm_insn[4] = { + OPC_VADDI_BU, OPC_VADDI_HU, OPC_VADDI_WU, OPC_VADDI_DU + }; + static const LoongArchInsn sub_vec_insn[4] = { + OPC_VSUB_B, OPC_VSUB_H, OPC_VSUB_W, OPC_VSUB_D + }; + static const LoongArchInsn sub_vec_imm_insn[4] = { + OPC_VSUBI_BU, OPC_VSUBI_HU, OPC_VSUBI_WU, OPC_VSUBI_DU + }; + + if (a2_is_const) { + int64_t value = sextract64(a2, 0, 8 << vece); + if (!is_add) { + value = -value; + } + + /* Try vaddi/vsubi */ + if (0 <= value && value <= 0x1f) { + tcg_out32(s, encode_vdvjuk5_insn(add_vec_imm_insn[vece], a0, \ + a1, value)); + return; + } else if (-0x1f <= value && value < 0) { + tcg_out32(s, encode_vdvjuk5_insn(sub_vec_imm_insn[vece], a0, \ + a1, -value)); + return; + } + + /* constraint TCG_CT_CONST_VADD ensures unreachable */ + g_assert_not_reached(); + } + + if (is_add) { + tcg_out32(s, encode_vdvjvk_insn(add_vec_insn[vece], a0, a1, a2)); + } else { + tcg_out32(s, encode_vdvjvk_insn(sub_vec_insn[vece], a0, a1, a2)); + } +} + +static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc, + unsigned vecl, unsigned vece, + const TCGArg args[TCG_MAX_OP_ARGS], + const int const_args[TCG_MAX_OP_ARGS]) +{ + TCGType type = vecl + TCG_TYPE_V64; + TCGArg a0, a1, a2, a3; + TCGReg temp = TCG_REG_TMP0; + TCGReg temp_vec = TCG_VEC_TMP0; + + static const LoongArchInsn cmp_vec_insn[16][4] = { + [TCG_COND_EQ] = {OPC_VSEQ_B, OPC_VSEQ_H, OPC_VSEQ_W, OPC_VSEQ_D}, + [TCG_COND_LE] = {OPC_VSLE_B, OPC_VSLE_H, OPC_VSLE_W, OPC_VSLE_D}, + [TCG_COND_LEU] = {OPC_VSLE_BU, OPC_VSLE_HU, OPC_VSLE_WU, OPC_VSLE_DU}, + [TCG_COND_LT] = {OPC_VSLT_B, OPC_VSLT_H, OPC_VSLT_W, OPC_VSLT_D}, + [TCG_COND_LTU] = {OPC_VSLT_BU, OPC_VSLT_HU, OPC_VSLT_WU, OPC_VSLT_DU}, + }; + static const LoongArchInsn cmp_vec_imm_insn[16][4] = { + [TCG_COND_EQ] = {OPC_VSEQI_B, OPC_VSEQI_H, OPC_VSEQI_W, OPC_VSEQI_D}, + [TCG_COND_LE] = {OPC_VSLEI_B, OPC_VSLEI_H, OPC_VSLEI_W, OPC_VSLEI_D}, + [TCG_COND_LEU] = {OPC_VSLEI_BU, OPC_VSLEI_HU, OPC_VSLEI_WU, OPC_VSLEI_DU}, + [TCG_COND_LT] = {OPC_VSLTI_B, OPC_VSLTI_H, OPC_VSLTI_W, OPC_VSLTI_D}, + [TCG_COND_LTU] = {OPC_VSLTI_BU, OPC_VSLTI_HU, OPC_VSLTI_WU, OPC_VSLTI_DU}, + }; + LoongArchInsn insn; + static const LoongArchInsn neg_vec_insn[4] = { + OPC_VNEG_B, OPC_VNEG_H, OPC_VNEG_W, OPC_VNEG_D + }; + static const LoongArchInsn mul_vec_insn[4] = { + OPC_VMUL_B, OPC_VMUL_H, OPC_VMUL_W, OPC_VMUL_D + }; + static const LoongArchInsn smin_vec_insn[4] = { + OPC_VMIN_B, OPC_VMIN_H, OPC_VMIN_W, OPC_VMIN_D + }; + static const LoongArchInsn umin_vec_insn[4] = { + OPC_VMIN_BU, OPC_VMIN_HU, OPC_VMIN_WU, OPC_VMIN_DU + }; + static const LoongArchInsn smax_vec_insn[4] = { + OPC_VMAX_B, OPC_VMAX_H, OPC_VMAX_W, OPC_VMAX_D + }; + static const LoongArchInsn umax_vec_insn[4] = { + OPC_VMAX_BU, OPC_VMAX_HU, OPC_VMAX_WU, OPC_VMAX_DU + }; + static const LoongArchInsn ssadd_vec_insn[4] = { + OPC_VSADD_B, OPC_VSADD_H, OPC_VSADD_W, OPC_VSADD_D + }; + static const LoongArchInsn usadd_vec_insn[4] = { + OPC_VSADD_BU, OPC_VSADD_HU, OPC_VSADD_WU, OPC_VSADD_DU + }; + static const LoongArchInsn sssub_vec_insn[4] = { + OPC_VSSUB_B, OPC_VSSUB_H, OPC_VSSUB_W, OPC_VSSUB_D + }; + static const LoongArchInsn ussub_vec_insn[4] = { + OPC_VSSUB_BU, OPC_VSSUB_HU, OPC_VSSUB_WU, OPC_VSSUB_DU + }; + static const LoongArchInsn shlv_vec_insn[4] = { + OPC_VSLL_B, OPC_VSLL_H, OPC_VSLL_W, OPC_VSLL_D + }; + static const LoongArchInsn shrv_vec_insn[4] = { + OPC_VSRL_B, OPC_VSRL_H, OPC_VSRL_W, OPC_VSRL_D + }; + static const LoongArchInsn sarv_vec_insn[4] = { + OPC_VSRA_B, OPC_VSRA_H, OPC_VSRA_W, OPC_VSRA_D + }; + static const LoongArchInsn shli_vec_insn[4] = { + OPC_VSLLI_B, OPC_VSLLI_H, OPC_VSLLI_W, OPC_VSLLI_D + }; + static const LoongArchInsn shri_vec_insn[4] = { + OPC_VSRLI_B, OPC_VSRLI_H, OPC_VSRLI_W, OPC_VSRLI_D + }; + static const LoongArchInsn sari_vec_insn[4] = { + OPC_VSRAI_B, OPC_VSRAI_H, OPC_VSRAI_W, OPC_VSRAI_D + }; + static const LoongArchInsn rotrv_vec_insn[4] = { + OPC_VROTR_B, OPC_VROTR_H, OPC_VROTR_W, OPC_VROTR_D + }; + + a0 = args[0]; + a1 = args[1]; + a2 = args[2]; + a3 = args[3]; + + /* Currently only supports V128 */ + tcg_debug_assert(type == TCG_TYPE_V128); + + switch (opc) { + case INDEX_op_st_vec: + /* Try to fit vst imm */ + if (-0x800 <= a2 && a2 <= 0x7ff) { + tcg_out_opc_vst(s, a0, a1, a2); + } else { + tcg_out_movi(s, TCG_TYPE_I64, temp, a2); + tcg_out_opc_vstx(s, a0, a1, temp); + } + break; + case INDEX_op_ld_vec: + /* Try to fit vld imm */ + if (-0x800 <= a2 && a2 <= 0x7ff) { + tcg_out_opc_vld(s, a0, a1, a2); + } else { + tcg_out_movi(s, TCG_TYPE_I64, temp, a2); + tcg_out_opc_vldx(s, a0, a1, temp); + } + break; + case INDEX_op_and_vec: + tcg_out_opc_vand_v(s, a0, a1, a2); + break; + case INDEX_op_andc_vec: + /* + * vandn vd, vj, vk: vd = vk & ~vj + * andc_vec vd, vj, vk: vd = vj & ~vk + * vk and vk are swapped + */ + tcg_out_opc_vandn_v(s, a0, a2, a1); + break; + case INDEX_op_or_vec: + tcg_out_opc_vor_v(s, a0, a1, a2); + break; + case INDEX_op_orc_vec: + tcg_out_opc_vorn_v(s, a0, a1, a2); + break; + case INDEX_op_xor_vec: + tcg_out_opc_vxor_v(s, a0, a1, a2); + break; + case INDEX_op_nor_vec: + tcg_out_opc_vnor_v(s, a0, a1, a2); + break; + case INDEX_op_not_vec: + tcg_out_opc_vnor_v(s, a0, a1, a1); + break; + case INDEX_op_cmp_vec: + { + TCGCond cond = args[3]; + if (const_args[2]) { + /* + * cmp_vec dest, src, value + * Try vseqi/vslei/vslti + */ + int64_t value = sextract64(a2, 0, 8 << vece); + if ((cond == TCG_COND_EQ || cond == TCG_COND_LE || \ + cond == TCG_COND_LT) && (-0x10 <= value && value <= 0x0f)) { + tcg_out32(s, encode_vdvjsk5_insn(cmp_vec_imm_insn[cond][vece], \ + a0, a1, value)); + break; + } else if ((cond == TCG_COND_LEU || cond == TCG_COND_LTU) && + (0x00 <= value && value <= 0x1f)) { + tcg_out32(s, encode_vdvjuk5_insn(cmp_vec_imm_insn[cond][vece], \ + a0, a1, value)); + break; + } + + /* + * Fallback to: + * dupi_vec temp, a2 + * cmp_vec a0, a1, temp, cond + */ + tcg_out_dupi_vec(s, type, vece, temp_vec, a2); + a2 = temp_vec; + } + + insn = cmp_vec_insn[cond][vece]; + if (insn == 0) { + TCGArg t; + t = a1, a1 = a2, a2 = t; + cond = tcg_swap_cond(cond); + insn = cmp_vec_insn[cond][vece]; + tcg_debug_assert(insn != 0); + } + tcg_out32(s, encode_vdvjvk_insn(insn, a0, a1, a2)); + } + break; + case INDEX_op_add_vec: + tcg_out_addsub_vec(s, vece, a0, a1, a2, const_args[2], true); + break; + case INDEX_op_sub_vec: + tcg_out_addsub_vec(s, vece, a0, a1, a2, const_args[2], false); + break; + case INDEX_op_neg_vec: + tcg_out32(s, encode_vdvj_insn(neg_vec_insn[vece], a0, a1)); + break; + case INDEX_op_mul_vec: + tcg_out32(s, encode_vdvjvk_insn(mul_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_smin_vec: + tcg_out32(s, encode_vdvjvk_insn(smin_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_smax_vec: + tcg_out32(s, encode_vdvjvk_insn(smax_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_umin_vec: + tcg_out32(s, encode_vdvjvk_insn(umin_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_umax_vec: + tcg_out32(s, encode_vdvjvk_insn(umax_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_ssadd_vec: + tcg_out32(s, encode_vdvjvk_insn(ssadd_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_usadd_vec: + tcg_out32(s, encode_vdvjvk_insn(usadd_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_sssub_vec: + tcg_out32(s, encode_vdvjvk_insn(sssub_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_ussub_vec: + tcg_out32(s, encode_vdvjvk_insn(ussub_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_shlv_vec: + tcg_out32(s, encode_vdvjvk_insn(shlv_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_shrv_vec: + tcg_out32(s, encode_vdvjvk_insn(shrv_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_sarv_vec: + tcg_out32(s, encode_vdvjvk_insn(sarv_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_shli_vec: + tcg_out32(s, encode_vdvjuk3_insn(shli_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_shri_vec: + tcg_out32(s, encode_vdvjuk3_insn(shri_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_sari_vec: + tcg_out32(s, encode_vdvjuk3_insn(sari_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_rotrv_vec: + tcg_out32(s, encode_vdvjvk_insn(rotrv_vec_insn[vece], a0, a1, a2)); + break; + case INDEX_op_rotlv_vec: + /* rotlv_vec a1, a2 = rotrv_vec a1, -a2 */ + tcg_out32(s, encode_vdvj_insn(neg_vec_insn[vece], temp_vec, a2)); + tcg_out32(s, encode_vdvjvk_insn(rotrv_vec_insn[vece], a0, a1, + temp_vec)); + break; + case INDEX_op_rotli_vec: + /* rotli_vec a1, a2 = rotri_vec a1, -a2 */ + a2 = extract32(-a2, 0, 3 + vece); + switch (vece) { + case MO_8: + tcg_out_opc_vrotri_b(s, a0, a1, a2); + break; + case MO_16: + tcg_out_opc_vrotri_h(s, a0, a1, a2); + break; + case MO_32: + tcg_out_opc_vrotri_w(s, a0, a1, a2); + break; + case MO_64: + tcg_out_opc_vrotri_d(s, a0, a1, a2); + break; + default: + g_assert_not_reached(); + } + break; + case INDEX_op_bitsel_vec: + /* vbitsel vd, vj, vk, va = bitsel_vec vd, va, vk, vj */ + tcg_out_opc_vbitsel_v(s, a0, a3, a2, a1); + break; + case INDEX_op_dupm_vec: + tcg_out_dupm_vec(s, type, vece, a0, a1, a2); + break; + default: + g_assert_not_reached(); + } +} + +int tcg_can_emit_vec_op(TCGOpcode opc, TCGType type, unsigned vece) +{ + switch (opc) { + case INDEX_op_ld_vec: + case INDEX_op_st_vec: + case INDEX_op_dup_vec: + case INDEX_op_dupm_vec: + case INDEX_op_cmp_vec: + case INDEX_op_add_vec: + case INDEX_op_sub_vec: + case INDEX_op_and_vec: + case INDEX_op_andc_vec: + case INDEX_op_or_vec: + case INDEX_op_orc_vec: + case INDEX_op_xor_vec: + case INDEX_op_nor_vec: + case INDEX_op_not_vec: + case INDEX_op_neg_vec: + case INDEX_op_mul_vec: + case INDEX_op_smin_vec: + case INDEX_op_smax_vec: + case INDEX_op_umin_vec: + case INDEX_op_umax_vec: + case INDEX_op_ssadd_vec: + case INDEX_op_usadd_vec: + case INDEX_op_sssub_vec: + case INDEX_op_ussub_vec: + case INDEX_op_shlv_vec: + case INDEX_op_shrv_vec: + case INDEX_op_sarv_vec: + case INDEX_op_bitsel_vec: + return 1; + default: + return 0; + } +} + +void tcg_expand_vec_op(TCGOpcode opc, TCGType type, unsigned vece, + TCGArg a0, ...) +{ + 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: + case INDEX_op_qemu_st_a32_i32: + case INDEX_op_qemu_st_a64_i32: + case INDEX_op_qemu_st_a32_i64: + case INDEX_op_qemu_st_a64_i64: + return C_O0_I2(rZ, r); + + case INDEX_op_qemu_ld_a32_i128: + case INDEX_op_qemu_ld_a64_i128: + return C_N2_I1(r, r, r); + + case INDEX_op_qemu_st_a32_i128: + case INDEX_op_qemu_st_a64_i128: + return C_O0_I3(r, r, r); + + case INDEX_op_brcond_i32: + case INDEX_op_brcond_i64: + return C_O0_I2(rZ, rZ); + + 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_neg_i32: + case INDEX_op_neg_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: + case INDEX_op_qemu_ld_a32_i32: + case INDEX_op_qemu_ld_a64_i32: + case INDEX_op_qemu_ld_a32_i64: + case INDEX_op_qemu_ld_a64_i64: + return C_O1_I1(r, r); + + 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: + return C_O1_I2(r, r, ri); + case INDEX_op_add_i64: + return C_O1_I2(r, r, rJ); + + 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_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_setcond_i32: + return C_O1_I2(r, rZ, ri); + case INDEX_op_sub_i64: + case INDEX_op_setcond_i64: + return C_O1_I2(r, rZ, rJ); + + 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); + + case INDEX_op_movcond_i32: + case INDEX_op_movcond_i64: + return C_O1_I4(r, rZ, rJ, rZ, rZ); + + case INDEX_op_ld_vec: + case INDEX_op_dupm_vec: + case INDEX_op_dup_vec: + return C_O1_I1(w, r); + + case INDEX_op_st_vec: + return C_O0_I2(w, r); + + case INDEX_op_cmp_vec: + return C_O1_I2(w, w, wM); + + case INDEX_op_add_vec: + case INDEX_op_sub_vec: + return C_O1_I2(w, w, wA); + + case INDEX_op_and_vec: + case INDEX_op_andc_vec: + case INDEX_op_or_vec: + case INDEX_op_orc_vec: + case INDEX_op_xor_vec: + case INDEX_op_nor_vec: + case INDEX_op_mul_vec: + case INDEX_op_smin_vec: + case INDEX_op_smax_vec: + case INDEX_op_umin_vec: + case INDEX_op_umax_vec: + case INDEX_op_ssadd_vec: + case INDEX_op_usadd_vec: + case INDEX_op_sssub_vec: + case INDEX_op_ussub_vec: + case INDEX_op_shlv_vec: + case INDEX_op_shrv_vec: + case INDEX_op_sarv_vec: + case INDEX_op_rotrv_vec: + case INDEX_op_rotlv_vec: + return C_O1_I2(w, w, w); + + case INDEX_op_not_vec: + case INDEX_op_neg_vec: + case INDEX_op_shli_vec: + case INDEX_op_shri_vec: + case INDEX_op_sari_vec: + case INDEX_op_rotli_vec: + return C_O1_I1(w, w); + + case INDEX_op_bitsel_vec: + return C_O1_I3(w, w, w, w); + + 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 (!tcg_use_softmmu && 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); + } + + /* 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_out_tb_start(TCGContext *s) +{ + /* nothing to do */ +} + +static void tcg_target_init(TCGContext *s) +{ + unsigned long hwcap = qemu_getauxval(AT_HWCAP); + + /* Server and desktop class cpus have UAL; embedded cpus do not. */ + if (!(hwcap & HWCAP_LOONGARCH_UAL)) { + error_report("TCG: unaligned access support required; exiting"); + exit(EXIT_FAILURE); + } + + 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 | ALL_VECTOR_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); + + if (cpuinfo & CPUINFO_LSX) { + tcg_target_available_regs[TCG_TYPE_V128] = ALL_VECTOR_REGS; + tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V24); + tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V25); + tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V26); + tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V27); + tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V28); + tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V29); + tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V30); + tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V31); + } + + 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); + tcg_regset_set_reg(s->reserved_regs, TCG_VEC_TMP0); +} + +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)); +} |