| /* |
| * 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, TCGType type, int ct, 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; |
| 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)); |
| } |
