/* * Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see . */ #include "qemu/osdep.h" #include "cpu.h" #include "internal.h" #include "tcg/tcg-op.h" #include "tcg/tcg-op-gvec.h" #include "insn.h" #include "opcodes.h" #include "translate.h" #define QEMU_GENERATE /* Used internally by macros.h */ #include "macros.h" #include "mmvec/macros.h" #undef QEMU_GENERATE #include "gen_tcg.h" #include "gen_tcg_hvx.h" #include "genptr.h" TCGv gen_read_reg(TCGv result, int num) { tcg_gen_mov_tl(result, hex_gpr[num]); return result; } TCGv gen_read_preg(TCGv pred, uint8_t num) { tcg_gen_mov_tl(pred, hex_pred[num]); return pred; } #define IMMUTABLE (~0) static const target_ulong reg_immut_masks[TOTAL_PER_THREAD_REGS] = { [HEX_REG_USR] = 0xc13000c0, [HEX_REG_PC] = IMMUTABLE, [HEX_REG_GP] = 0x3f, [HEX_REG_UPCYCLELO] = IMMUTABLE, [HEX_REG_UPCYCLEHI] = IMMUTABLE, [HEX_REG_UTIMERLO] = IMMUTABLE, [HEX_REG_UTIMERHI] = IMMUTABLE, }; static inline void gen_masked_reg_write(TCGv new_val, TCGv cur_val, target_ulong reg_mask) { if (reg_mask) { TCGv tmp = tcg_temp_new(); /* new_val = (new_val & ~reg_mask) | (cur_val & reg_mask) */ tcg_gen_andi_tl(new_val, new_val, ~reg_mask); tcg_gen_andi_tl(tmp, cur_val, reg_mask); tcg_gen_or_tl(new_val, new_val, tmp); tcg_temp_free(tmp); } } static inline void gen_log_predicated_reg_write(int rnum, TCGv val, uint32_t slot) { TCGv zero = tcg_constant_tl(0); TCGv slot_mask = tcg_temp_new(); tcg_gen_andi_tl(slot_mask, hex_slot_cancelled, 1 << slot); tcg_gen_movcond_tl(TCG_COND_EQ, hex_new_value[rnum], slot_mask, zero, val, hex_new_value[rnum]); if (HEX_DEBUG) { /* * Do this so HELPER(debug_commit_end) will know * * Note that slot_mask indicates the value is not written * (i.e., slot was cancelled), so we create a true/false value before * or'ing with hex_reg_written[rnum]. */ tcg_gen_setcond_tl(TCG_COND_EQ, slot_mask, slot_mask, zero); tcg_gen_or_tl(hex_reg_written[rnum], hex_reg_written[rnum], slot_mask); } tcg_temp_free(slot_mask); } void gen_log_reg_write(int rnum, TCGv val) { const target_ulong reg_mask = reg_immut_masks[rnum]; gen_masked_reg_write(val, hex_gpr[rnum], reg_mask); tcg_gen_mov_tl(hex_new_value[rnum], val); if (HEX_DEBUG) { /* Do this so HELPER(debug_commit_end) will know */ tcg_gen_movi_tl(hex_reg_written[rnum], 1); } } static void gen_log_predicated_reg_write_pair(int rnum, TCGv_i64 val, uint32_t slot) { TCGv val32 = tcg_temp_new(); TCGv zero = tcg_constant_tl(0); TCGv slot_mask = tcg_temp_new(); tcg_gen_andi_tl(slot_mask, hex_slot_cancelled, 1 << slot); /* Low word */ tcg_gen_extrl_i64_i32(val32, val); tcg_gen_movcond_tl(TCG_COND_EQ, hex_new_value[rnum], slot_mask, zero, val32, hex_new_value[rnum]); /* High word */ tcg_gen_extrh_i64_i32(val32, val); tcg_gen_movcond_tl(TCG_COND_EQ, hex_new_value[rnum + 1], slot_mask, zero, val32, hex_new_value[rnum + 1]); if (HEX_DEBUG) { /* * Do this so HELPER(debug_commit_end) will know * * Note that slot_mask indicates the value is not written * (i.e., slot was cancelled), so we create a true/false value before * or'ing with hex_reg_written[rnum]. */ tcg_gen_setcond_tl(TCG_COND_EQ, slot_mask, slot_mask, zero); tcg_gen_or_tl(hex_reg_written[rnum], hex_reg_written[rnum], slot_mask); tcg_gen_or_tl(hex_reg_written[rnum + 1], hex_reg_written[rnum + 1], slot_mask); } tcg_temp_free(val32); tcg_temp_free(slot_mask); } static void gen_log_reg_write_pair(int rnum, TCGv_i64 val) { const target_ulong reg_mask_low = reg_immut_masks[rnum]; const target_ulong reg_mask_high = reg_immut_masks[rnum + 1]; TCGv val32 = tcg_temp_new(); /* Low word */ tcg_gen_extrl_i64_i32(val32, val); gen_masked_reg_write(val32, hex_gpr[rnum], reg_mask_low); tcg_gen_mov_tl(hex_new_value[rnum], val32); if (HEX_DEBUG) { /* Do this so HELPER(debug_commit_end) will know */ tcg_gen_movi_tl(hex_reg_written[rnum], 1); } /* High word */ tcg_gen_extrh_i64_i32(val32, val); gen_masked_reg_write(val32, hex_gpr[rnum + 1], reg_mask_high); tcg_gen_mov_tl(hex_new_value[rnum + 1], val32); if (HEX_DEBUG) { /* Do this so HELPER(debug_commit_end) will know */ tcg_gen_movi_tl(hex_reg_written[rnum + 1], 1); } tcg_temp_free(val32); } void gen_log_pred_write(DisasContext *ctx, int pnum, TCGv val) { TCGv base_val = tcg_temp_new(); tcg_gen_andi_tl(base_val, val, 0xff); /* * Section 6.1.3 of the Hexagon V67 Programmer's Reference Manual * * Multiple writes to the same preg are and'ed together * If this is the first predicate write in the packet, do a * straight assignment. Otherwise, do an and. */ if (!test_bit(pnum, ctx->pregs_written)) { tcg_gen_mov_tl(hex_new_pred_value[pnum], base_val); } else { tcg_gen_and_tl(hex_new_pred_value[pnum], hex_new_pred_value[pnum], base_val); } tcg_gen_ori_tl(hex_pred_written, hex_pred_written, 1 << pnum); tcg_temp_free(base_val); } static inline void gen_read_p3_0(TCGv control_reg) { tcg_gen_movi_tl(control_reg, 0); for (int i = 0; i < NUM_PREGS; i++) { tcg_gen_deposit_tl(control_reg, control_reg, hex_pred[i], i * 8, 8); } } /* * Certain control registers require special handling on read * HEX_REG_P3_0_ALIASED aliased to the predicate registers * -> concat the 4 predicate registers together * HEX_REG_PC actual value stored in DisasContext * -> assign from ctx->base.pc_next * HEX_REG_QEMU_*_CNT changes in current TB in DisasContext * -> add current TB changes to existing reg value */ static inline void gen_read_ctrl_reg(DisasContext *ctx, const int reg_num, TCGv dest) { if (reg_num == HEX_REG_P3_0_ALIASED) { gen_read_p3_0(dest); } else if (reg_num == HEX_REG_PC) { tcg_gen_movi_tl(dest, ctx->base.pc_next); } else if (reg_num == HEX_REG_QEMU_PKT_CNT) { tcg_gen_addi_tl(dest, hex_gpr[HEX_REG_QEMU_PKT_CNT], ctx->num_packets); } else if (reg_num == HEX_REG_QEMU_INSN_CNT) { tcg_gen_addi_tl(dest, hex_gpr[HEX_REG_QEMU_INSN_CNT], ctx->num_insns); } else if (reg_num == HEX_REG_QEMU_HVX_CNT) { tcg_gen_addi_tl(dest, hex_gpr[HEX_REG_QEMU_HVX_CNT], ctx->num_hvx_insns); } else { tcg_gen_mov_tl(dest, hex_gpr[reg_num]); } } static inline void gen_read_ctrl_reg_pair(DisasContext *ctx, const int reg_num, TCGv_i64 dest) { if (reg_num == HEX_REG_P3_0_ALIASED) { TCGv p3_0 = tcg_temp_new(); gen_read_p3_0(p3_0); tcg_gen_concat_i32_i64(dest, p3_0, hex_gpr[reg_num + 1]); tcg_temp_free(p3_0); } else if (reg_num == HEX_REG_PC - 1) { TCGv pc = tcg_constant_tl(ctx->base.pc_next); tcg_gen_concat_i32_i64(dest, hex_gpr[reg_num], pc); } else if (reg_num == HEX_REG_QEMU_PKT_CNT) { TCGv pkt_cnt = tcg_temp_new(); TCGv insn_cnt = tcg_temp_new(); tcg_gen_addi_tl(pkt_cnt, hex_gpr[HEX_REG_QEMU_PKT_CNT], ctx->num_packets); tcg_gen_addi_tl(insn_cnt, hex_gpr[HEX_REG_QEMU_INSN_CNT], ctx->num_insns); tcg_gen_concat_i32_i64(dest, pkt_cnt, insn_cnt); tcg_temp_free(pkt_cnt); tcg_temp_free(insn_cnt); } else if (reg_num == HEX_REG_QEMU_HVX_CNT) { TCGv hvx_cnt = tcg_temp_new(); tcg_gen_addi_tl(hvx_cnt, hex_gpr[HEX_REG_QEMU_HVX_CNT], ctx->num_hvx_insns); tcg_gen_concat_i32_i64(dest, hvx_cnt, hex_gpr[reg_num + 1]); tcg_temp_free(hvx_cnt); } else { tcg_gen_concat_i32_i64(dest, hex_gpr[reg_num], hex_gpr[reg_num + 1]); } } static void gen_write_p3_0(DisasContext *ctx, TCGv control_reg) { TCGv hex_p8 = tcg_temp_new(); for (int i = 0; i < NUM_PREGS; i++) { tcg_gen_extract_tl(hex_p8, control_reg, i * 8, 8); gen_log_pred_write(ctx, i, hex_p8); ctx_log_pred_write(ctx, i); } tcg_temp_free(hex_p8); } /* * Certain control registers require special handling on write * HEX_REG_P3_0_ALIASED aliased to the predicate registers * -> break the value across 4 predicate registers * HEX_REG_QEMU_*_CNT changes in current TB in DisasContext * -> clear the changes */ static inline void gen_write_ctrl_reg(DisasContext *ctx, int reg_num, TCGv val) { if (reg_num == HEX_REG_P3_0_ALIASED) { gen_write_p3_0(ctx, val); } else { gen_log_reg_write(reg_num, val); ctx_log_reg_write(ctx, reg_num); if (reg_num == HEX_REG_QEMU_PKT_CNT) { ctx->num_packets = 0; } if (reg_num == HEX_REG_QEMU_INSN_CNT) { ctx->num_insns = 0; } if (reg_num == HEX_REG_QEMU_HVX_CNT) { ctx->num_hvx_insns = 0; } } } static inline void gen_write_ctrl_reg_pair(DisasContext *ctx, int reg_num, TCGv_i64 val) { if (reg_num == HEX_REG_P3_0_ALIASED) { TCGv val32 = tcg_temp_new(); tcg_gen_extrl_i64_i32(val32, val); gen_write_p3_0(ctx, val32); tcg_gen_extrh_i64_i32(val32, val); gen_log_reg_write(reg_num + 1, val32); tcg_temp_free(val32); ctx_log_reg_write(ctx, reg_num + 1); } else { gen_log_reg_write_pair(reg_num, val); ctx_log_reg_write_pair(ctx, reg_num); if (reg_num == HEX_REG_QEMU_PKT_CNT) { ctx->num_packets = 0; ctx->num_insns = 0; } if (reg_num == HEX_REG_QEMU_HVX_CNT) { ctx->num_hvx_insns = 0; } } } TCGv gen_get_byte(TCGv result, int N, TCGv src, bool sign) { if (sign) { tcg_gen_sextract_tl(result, src, N * 8, 8); } else { tcg_gen_extract_tl(result, src, N * 8, 8); } return result; } TCGv gen_get_byte_i64(TCGv result, int N, TCGv_i64 src, bool sign) { TCGv_i64 res64 = tcg_temp_new_i64(); if (sign) { tcg_gen_sextract_i64(res64, src, N * 8, 8); } else { tcg_gen_extract_i64(res64, src, N * 8, 8); } tcg_gen_extrl_i64_i32(result, res64); tcg_temp_free_i64(res64); return result; } TCGv gen_get_half(TCGv result, int N, TCGv src, bool sign) { if (sign) { tcg_gen_sextract_tl(result, src, N * 16, 16); } else { tcg_gen_extract_tl(result, src, N * 16, 16); } return result; } void gen_set_half(int N, TCGv result, TCGv src) { tcg_gen_deposit_tl(result, result, src, N * 16, 16); } void gen_set_half_i64(int N, TCGv_i64 result, TCGv src) { TCGv_i64 src64 = tcg_temp_new_i64(); tcg_gen_extu_i32_i64(src64, src); tcg_gen_deposit_i64(result, result, src64, N * 16, 16); tcg_temp_free_i64(src64); } void gen_set_byte_i64(int N, TCGv_i64 result, TCGv src) { TCGv_i64 src64 = tcg_temp_new_i64(); tcg_gen_extu_i32_i64(src64, src); tcg_gen_deposit_i64(result, result, src64, N * 8, 8); tcg_temp_free_i64(src64); } static inline void gen_load_locked4u(TCGv dest, TCGv vaddr, int mem_index) { tcg_gen_qemu_ld32u(dest, vaddr, mem_index); tcg_gen_mov_tl(hex_llsc_addr, vaddr); tcg_gen_mov_tl(hex_llsc_val, dest); } static inline void gen_load_locked8u(TCGv_i64 dest, TCGv vaddr, int mem_index) { tcg_gen_qemu_ld64(dest, vaddr, mem_index); tcg_gen_mov_tl(hex_llsc_addr, vaddr); tcg_gen_mov_i64(hex_llsc_val_i64, dest); } static inline void gen_store_conditional4(DisasContext *ctx, TCGv pred, TCGv vaddr, TCGv src) { TCGLabel *fail = gen_new_label(); TCGLabel *done = gen_new_label(); TCGv one, zero, tmp; tcg_gen_brcond_tl(TCG_COND_NE, vaddr, hex_llsc_addr, fail); one = tcg_constant_tl(0xff); zero = tcg_constant_tl(0); tmp = tcg_temp_new(); tcg_gen_atomic_cmpxchg_tl(tmp, hex_llsc_addr, hex_llsc_val, src, ctx->mem_idx, MO_32); tcg_gen_movcond_tl(TCG_COND_EQ, pred, tmp, hex_llsc_val, one, zero); tcg_temp_free(tmp); tcg_gen_br(done); gen_set_label(fail); tcg_gen_movi_tl(pred, 0); gen_set_label(done); tcg_gen_movi_tl(hex_llsc_addr, ~0); } static inline void gen_store_conditional8(DisasContext *ctx, TCGv pred, TCGv vaddr, TCGv_i64 src) { TCGLabel *fail = gen_new_label(); TCGLabel *done = gen_new_label(); TCGv_i64 one, zero, tmp; tcg_gen_brcond_tl(TCG_COND_NE, vaddr, hex_llsc_addr, fail); one = tcg_constant_i64(0xff); zero = tcg_constant_i64(0); tmp = tcg_temp_new_i64(); tcg_gen_atomic_cmpxchg_i64(tmp, hex_llsc_addr, hex_llsc_val_i64, src, ctx->mem_idx, MO_64); tcg_gen_movcond_i64(TCG_COND_EQ, tmp, tmp, hex_llsc_val_i64, one, zero); tcg_gen_extrl_i64_i32(pred, tmp); tcg_temp_free_i64(tmp); tcg_gen_br(done); gen_set_label(fail); tcg_gen_movi_tl(pred, 0); gen_set_label(done); tcg_gen_movi_tl(hex_llsc_addr, ~0); } void gen_store32(TCGv vaddr, TCGv src, int width, uint32_t slot) { tcg_gen_mov_tl(hex_store_addr[slot], vaddr); tcg_gen_movi_tl(hex_store_width[slot], width); tcg_gen_mov_tl(hex_store_val32[slot], src); } void gen_store1(TCGv_env cpu_env, TCGv vaddr, TCGv src, uint32_t slot) { gen_store32(vaddr, src, 1, slot); } void gen_store1i(TCGv_env cpu_env, TCGv vaddr, int32_t src, uint32_t slot) { TCGv tmp = tcg_constant_tl(src); gen_store1(cpu_env, vaddr, tmp, slot); } void gen_store2(TCGv_env cpu_env, TCGv vaddr, TCGv src, uint32_t slot) { gen_store32(vaddr, src, 2, slot); } void gen_store2i(TCGv_env cpu_env, TCGv vaddr, int32_t src, uint32_t slot) { TCGv tmp = tcg_constant_tl(src); gen_store2(cpu_env, vaddr, tmp, slot); } void gen_store4(TCGv_env cpu_env, TCGv vaddr, TCGv src, uint32_t slot) { gen_store32(vaddr, src, 4, slot); } void gen_store4i(TCGv_env cpu_env, TCGv vaddr, int32_t src, uint32_t slot) { TCGv tmp = tcg_constant_tl(src); gen_store4(cpu_env, vaddr, tmp, slot); } void gen_store8(TCGv_env cpu_env, TCGv vaddr, TCGv_i64 src, uint32_t slot) { tcg_gen_mov_tl(hex_store_addr[slot], vaddr); tcg_gen_movi_tl(hex_store_width[slot], 8); tcg_gen_mov_i64(hex_store_val64[slot], src); } void gen_store8i(TCGv_env cpu_env, TCGv vaddr, int64_t src, uint32_t slot) { TCGv_i64 tmp = tcg_constant_i64(src); gen_store8(cpu_env, vaddr, tmp, slot); } TCGv gen_8bitsof(TCGv result, TCGv value) { TCGv zero = tcg_constant_tl(0); TCGv ones = tcg_constant_tl(0xff); tcg_gen_movcond_tl(TCG_COND_NE, result, value, zero, ones, zero); return result; } static void gen_write_new_pc_addr(DisasContext *ctx, TCGv addr, TCGCond cond, TCGv pred) { TCGLabel *pred_false = NULL; if (cond != TCG_COND_ALWAYS) { pred_false = gen_new_label(); tcg_gen_brcondi_tl(cond, pred, 0, pred_false); } if (ctx->pkt->pkt_has_multi_cof) { /* If there are multiple branches in a packet, ignore the second one */ tcg_gen_movcond_tl(TCG_COND_NE, hex_gpr[HEX_REG_PC], hex_branch_taken, tcg_constant_tl(0), hex_gpr[HEX_REG_PC], addr); tcg_gen_movi_tl(hex_branch_taken, 1); } else { tcg_gen_mov_tl(hex_gpr[HEX_REG_PC], addr); } if (cond != TCG_COND_ALWAYS) { gen_set_label(pred_false); } } static void gen_write_new_pc_pcrel(DisasContext *ctx, int pc_off, TCGCond cond, TCGv pred) { target_ulong dest = ctx->pkt->pc + pc_off; if (ctx->pkt->pkt_has_multi_cof) { gen_write_new_pc_addr(ctx, tcg_constant_tl(dest), cond, pred); } else { /* Defer this jump to the end of the TB */ ctx->branch_cond = TCG_COND_ALWAYS; if (pred != NULL) { ctx->branch_cond = cond; tcg_gen_mov_tl(hex_branch_taken, pred); } ctx->branch_dest = dest; } } void gen_set_usr_field(int field, TCGv val) { tcg_gen_deposit_tl(hex_new_value[HEX_REG_USR], hex_new_value[HEX_REG_USR], val, reg_field_info[field].offset, reg_field_info[field].width); } void gen_set_usr_fieldi(int field, int x) { if (reg_field_info[field].width == 1) { target_ulong bit = 1 << reg_field_info[field].offset; if ((x & 1) == 1) { tcg_gen_ori_tl(hex_new_value[HEX_REG_USR], hex_new_value[HEX_REG_USR], bit); } else { tcg_gen_andi_tl(hex_new_value[HEX_REG_USR], hex_new_value[HEX_REG_USR], ~bit); } } else { TCGv val = tcg_constant_tl(x); gen_set_usr_field(field, val); } } static void gen_compare(TCGCond cond, TCGv res, TCGv arg1, TCGv arg2) { TCGv one = tcg_constant_tl(0xff); TCGv zero = tcg_constant_tl(0); tcg_gen_movcond_tl(cond, res, arg1, arg2, one, zero); } static void gen_cond_jumpr(DisasContext *ctx, TCGv dst_pc, TCGCond cond, TCGv pred) { gen_write_new_pc_addr(ctx, dst_pc, cond, pred); } static void gen_cond_jump(DisasContext *ctx, TCGCond cond, TCGv pred, int pc_off) { gen_write_new_pc_pcrel(ctx, pc_off, cond, pred); } static void gen_cmpnd_cmp_jmp(DisasContext *ctx, int pnum, TCGCond cond1, TCGv arg1, TCGv arg2, TCGCond cond2, int pc_off) { if (ctx->insn->part1) { TCGv pred = tcg_temp_new(); gen_compare(cond1, pred, arg1, arg2); gen_log_pred_write(ctx, pnum, pred); tcg_temp_free(pred); } else { TCGv pred = tcg_temp_new(); tcg_gen_mov_tl(pred, hex_new_pred_value[pnum]); gen_cond_jump(ctx, cond2, pred, pc_off); tcg_temp_free(pred); } } static void gen_cmpnd_cmp_jmp_t(DisasContext *ctx, int pnum, TCGCond cond, TCGv arg1, TCGv arg2, int pc_off) { gen_cmpnd_cmp_jmp(ctx, pnum, cond, arg1, arg2, TCG_COND_EQ, pc_off); } static void gen_cmpnd_cmp_jmp_f(DisasContext *ctx, int pnum, TCGCond cond, TCGv arg1, TCGv arg2, int pc_off) { gen_cmpnd_cmp_jmp(ctx, pnum, cond, arg1, arg2, TCG_COND_NE, pc_off); } static void gen_cmpnd_cmpi_jmp_t(DisasContext *ctx, int pnum, TCGCond cond, TCGv arg1, int arg2, int pc_off) { TCGv tmp = tcg_constant_tl(arg2); gen_cmpnd_cmp_jmp(ctx, pnum, cond, arg1, tmp, TCG_COND_EQ, pc_off); } static void gen_cmpnd_cmpi_jmp_f(DisasContext *ctx, int pnum, TCGCond cond, TCGv arg1, int arg2, int pc_off) { TCGv tmp = tcg_constant_tl(arg2); gen_cmpnd_cmp_jmp(ctx, pnum, cond, arg1, tmp, TCG_COND_NE, pc_off); } static void gen_cmpnd_cmp_n1_jmp_t(DisasContext *ctx, int pnum, TCGCond cond, TCGv arg, int pc_off) { gen_cmpnd_cmpi_jmp_t(ctx, pnum, cond, arg, -1, pc_off); } static void gen_cmpnd_cmp_n1_jmp_f(DisasContext *ctx, int pnum, TCGCond cond, TCGv arg, int pc_off) { gen_cmpnd_cmpi_jmp_f(ctx, pnum, cond, arg, -1, pc_off); } static void gen_cmpnd_tstbit0_jmp(DisasContext *ctx, int pnum, TCGv arg, TCGCond cond, int pc_off) { if (ctx->insn->part1) { TCGv pred = tcg_temp_new(); tcg_gen_andi_tl(pred, arg, 1); gen_8bitsof(pred, pred); gen_log_pred_write(ctx, pnum, pred); tcg_temp_free(pred); } else { TCGv pred = tcg_temp_new(); tcg_gen_mov_tl(pred, hex_new_pred_value[pnum]); gen_cond_jump(ctx, cond, pred, pc_off); tcg_temp_free(pred); } } static void gen_testbit0_jumpnv(DisasContext *ctx, TCGv arg, TCGCond cond, int pc_off) { TCGv pred = tcg_temp_new(); tcg_gen_andi_tl(pred, arg, 1); gen_cond_jump(ctx, cond, pred, pc_off); tcg_temp_free(pred); } static void gen_jump(DisasContext *ctx, int pc_off) { gen_write_new_pc_pcrel(ctx, pc_off, TCG_COND_ALWAYS, NULL); } static void gen_jumpr(DisasContext *ctx, TCGv new_pc) { gen_write_new_pc_addr(ctx, new_pc, TCG_COND_ALWAYS, NULL); } static void gen_call(DisasContext *ctx, int pc_off) { TCGv next_PC = tcg_constant_tl(ctx->pkt->pc + ctx->pkt->encod_pkt_size_in_bytes); gen_log_reg_write(HEX_REG_LR, next_PC); gen_write_new_pc_pcrel(ctx, pc_off, TCG_COND_ALWAYS, NULL); } static void gen_cond_call(DisasContext *ctx, TCGv pred, TCGCond cond, int pc_off) { TCGv next_PC; TCGv lsb = tcg_temp_local_new(); TCGLabel *skip = gen_new_label(); tcg_gen_andi_tl(lsb, pred, 1); gen_write_new_pc_pcrel(ctx, pc_off, cond, lsb); tcg_gen_brcondi_tl(cond, lsb, 0, skip); tcg_temp_free(lsb); next_PC = tcg_constant_tl(ctx->pkt->pc + ctx->pkt->encod_pkt_size_in_bytes); gen_log_reg_write(HEX_REG_LR, next_PC); gen_set_label(skip); } static void gen_endloop0(DisasContext *ctx) { TCGv lpcfg = tcg_temp_local_new(); GET_USR_FIELD(USR_LPCFG, lpcfg); /* * if (lpcfg == 1) { * hex_new_pred_value[3] = 0xff; * hex_pred_written |= 1 << 3; * } */ TCGLabel *label1 = gen_new_label(); tcg_gen_brcondi_tl(TCG_COND_NE, lpcfg, 1, label1); { tcg_gen_movi_tl(hex_new_pred_value[3], 0xff); tcg_gen_ori_tl(hex_pred_written, hex_pred_written, 1 << 3); } gen_set_label(label1); /* * if (lpcfg) { * SET_USR_FIELD(USR_LPCFG, lpcfg - 1); * } */ TCGLabel *label2 = gen_new_label(); tcg_gen_brcondi_tl(TCG_COND_EQ, lpcfg, 0, label2); { tcg_gen_subi_tl(lpcfg, lpcfg, 1); SET_USR_FIELD(USR_LPCFG, lpcfg); } gen_set_label(label2); /* * If we're in a tight loop, we'll do this at the end of the TB to take * advantage of direct block chaining. */ if (!ctx->is_tight_loop) { /* * if (hex_gpr[HEX_REG_LC0] > 1) { * PC = hex_gpr[HEX_REG_SA0]; * hex_new_value[HEX_REG_LC0] = hex_gpr[HEX_REG_LC0] - 1; * } */ TCGLabel *label3 = gen_new_label(); tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC0], 1, label3); { gen_jumpr(ctx, hex_gpr[HEX_REG_SA0]); tcg_gen_subi_tl(hex_new_value[HEX_REG_LC0], hex_gpr[HEX_REG_LC0], 1); } gen_set_label(label3); } tcg_temp_free(lpcfg); } static void gen_cmp_jumpnv(DisasContext *ctx, TCGCond cond, TCGv val, TCGv src, int pc_off) { TCGv pred = tcg_temp_new(); tcg_gen_setcond_tl(cond, pred, val, src); gen_cond_jump(ctx, TCG_COND_EQ, pred, pc_off); tcg_temp_free(pred); } static void gen_cmpi_jumpnv(DisasContext *ctx, TCGCond cond, TCGv val, int src, int pc_off) { TCGv pred = tcg_temp_new(); tcg_gen_setcondi_tl(cond, pred, val, src); gen_cond_jump(ctx, TCG_COND_EQ, pred, pc_off); tcg_temp_free(pred); } /* Shift left with saturation */ static void gen_shl_sat(TCGv dst, TCGv src, TCGv shift_amt) { TCGv sh32 = tcg_temp_new(); TCGv dst_sar = tcg_temp_new(); TCGv ovf = tcg_temp_new(); TCGv satval = tcg_temp_new(); TCGv min = tcg_constant_tl(0x80000000); TCGv max = tcg_constant_tl(0x7fffffff); /* * Possible values for shift_amt are 0 .. 64 * We need special handling for values above 31 * * sh32 = shift & 31; * dst = sh32 == shift ? src : 0; * dst <<= sh32; * dst_sar = dst >> sh32; * satval = src < 0 ? min : max; * if (dst_asr != src) { * usr.OVF |= 1; * dst = satval; * } */ tcg_gen_andi_tl(sh32, shift_amt, 31); tcg_gen_movcond_tl(TCG_COND_EQ, dst, sh32, shift_amt, src, tcg_constant_tl(0)); tcg_gen_shl_tl(dst, dst, sh32); tcg_gen_sar_tl(dst_sar, dst, sh32); tcg_gen_movcond_tl(TCG_COND_LT, satval, src, tcg_constant_tl(0), min, max); tcg_gen_setcond_tl(TCG_COND_NE, ovf, dst_sar, src); tcg_gen_shli_tl(ovf, ovf, reg_field_info[USR_OVF].offset); tcg_gen_or_tl(hex_new_value[HEX_REG_USR], hex_new_value[HEX_REG_USR], ovf); tcg_gen_movcond_tl(TCG_COND_EQ, dst, dst_sar, src, dst, satval); tcg_temp_free(sh32); tcg_temp_free(dst_sar); tcg_temp_free(ovf); tcg_temp_free(satval); } static void gen_sar(TCGv dst, TCGv src, TCGv shift_amt) { /* * Shift arithmetic right * Robust when shift_amt is >31 bits */ TCGv tmp = tcg_temp_new(); tcg_gen_umin_tl(tmp, shift_amt, tcg_constant_tl(31)); tcg_gen_sar_tl(dst, src, tmp); tcg_temp_free(tmp); } /* Bidirectional shift right with saturation */ static void gen_asr_r_r_sat(TCGv RdV, TCGv RsV, TCGv RtV) { TCGv shift_amt = tcg_temp_local_new(); TCGLabel *positive = gen_new_label(); TCGLabel *done = gen_new_label(); tcg_gen_sextract_i32(shift_amt, RtV, 0, 7); tcg_gen_brcondi_tl(TCG_COND_GE, shift_amt, 0, positive); /* Negative shift amount => shift left */ tcg_gen_neg_tl(shift_amt, shift_amt); gen_shl_sat(RdV, RsV, shift_amt); tcg_gen_br(done); gen_set_label(positive); /* Positive shift amount => shift right */ gen_sar(RdV, RsV, shift_amt); gen_set_label(done); tcg_temp_free(shift_amt); } /* Bidirectional shift left with saturation */ static void gen_asl_r_r_sat(TCGv RdV, TCGv RsV, TCGv RtV) { TCGv shift_amt = tcg_temp_local_new(); TCGLabel *positive = gen_new_label(); TCGLabel *done = gen_new_label(); tcg_gen_sextract_i32(shift_amt, RtV, 0, 7); tcg_gen_brcondi_tl(TCG_COND_GE, shift_amt, 0, positive); /* Negative shift amount => shift right */ tcg_gen_neg_tl(shift_amt, shift_amt); gen_sar(RdV, RsV, shift_amt); tcg_gen_br(done); gen_set_label(positive); /* Positive shift amount => shift left */ gen_shl_sat(RdV, RsV, shift_amt); gen_set_label(done); tcg_temp_free(shift_amt); } static intptr_t vreg_src_off(DisasContext *ctx, int num) { intptr_t offset = offsetof(CPUHexagonState, VRegs[num]); if (test_bit(num, ctx->vregs_select)) { offset = ctx_future_vreg_off(ctx, num, 1, false); } if (test_bit(num, ctx->vregs_updated_tmp)) { offset = ctx_tmp_vreg_off(ctx, num, 1, false); } return offset; } static void gen_log_vreg_write(DisasContext *ctx, intptr_t srcoff, int num, VRegWriteType type, int slot_num, bool is_predicated) { TCGLabel *label_end = NULL; intptr_t dstoff; if (is_predicated) { TCGv cancelled = tcg_temp_local_new(); label_end = gen_new_label(); /* Don't do anything if the slot was cancelled */ tcg_gen_extract_tl(cancelled, hex_slot_cancelled, slot_num, 1); tcg_gen_brcondi_tl(TCG_COND_NE, cancelled, 0, label_end); tcg_temp_free(cancelled); } if (type != EXT_TMP) { dstoff = ctx_future_vreg_off(ctx, num, 1, true); tcg_gen_gvec_mov(MO_64, dstoff, srcoff, sizeof(MMVector), sizeof(MMVector)); tcg_gen_ori_tl(hex_VRegs_updated, hex_VRegs_updated, 1 << num); } else { dstoff = ctx_tmp_vreg_off(ctx, num, 1, false); tcg_gen_gvec_mov(MO_64, dstoff, srcoff, sizeof(MMVector), sizeof(MMVector)); } if (is_predicated) { gen_set_label(label_end); } } static void gen_log_vreg_write_pair(DisasContext *ctx, intptr_t srcoff, int num, VRegWriteType type, int slot_num, bool is_predicated) { gen_log_vreg_write(ctx, srcoff, num ^ 0, type, slot_num, is_predicated); srcoff += sizeof(MMVector); gen_log_vreg_write(ctx, srcoff, num ^ 1, type, slot_num, is_predicated); } static void gen_log_qreg_write(intptr_t srcoff, int num, int vnew, int slot_num, bool is_predicated) { TCGLabel *label_end = NULL; intptr_t dstoff; if (is_predicated) { TCGv cancelled = tcg_temp_local_new(); label_end = gen_new_label(); /* Don't do anything if the slot was cancelled */ tcg_gen_extract_tl(cancelled, hex_slot_cancelled, slot_num, 1); tcg_gen_brcondi_tl(TCG_COND_NE, cancelled, 0, label_end); tcg_temp_free(cancelled); } dstoff = offsetof(CPUHexagonState, future_QRegs[num]); tcg_gen_gvec_mov(MO_64, dstoff, srcoff, sizeof(MMQReg), sizeof(MMQReg)); if (is_predicated) { tcg_gen_ori_tl(hex_QRegs_updated, hex_QRegs_updated, 1 << num); gen_set_label(label_end); } } static void gen_vreg_load(DisasContext *ctx, intptr_t dstoff, TCGv src, bool aligned) { TCGv_i64 tmp = tcg_temp_new_i64(); if (aligned) { tcg_gen_andi_tl(src, src, ~((int32_t)sizeof(MMVector) - 1)); } for (int i = 0; i < sizeof(MMVector) / 8; i++) { tcg_gen_qemu_ld64(tmp, src, ctx->mem_idx); tcg_gen_addi_tl(src, src, 8); tcg_gen_st_i64(tmp, cpu_env, dstoff + i * 8); } tcg_temp_free_i64(tmp); } static void gen_vreg_store(DisasContext *ctx, TCGv EA, intptr_t srcoff, int slot, bool aligned) { intptr_t dstoff = offsetof(CPUHexagonState, vstore[slot].data); intptr_t maskoff = offsetof(CPUHexagonState, vstore[slot].mask); if (is_gather_store_insn(ctx)) { TCGv sl = tcg_constant_tl(slot); gen_helper_gather_store(cpu_env, EA, sl); return; } tcg_gen_movi_tl(hex_vstore_pending[slot], 1); if (aligned) { tcg_gen_andi_tl(hex_vstore_addr[slot], EA, ~((int32_t)sizeof(MMVector) - 1)); } else { tcg_gen_mov_tl(hex_vstore_addr[slot], EA); } tcg_gen_movi_tl(hex_vstore_size[slot], sizeof(MMVector)); /* Copy the data to the vstore buffer */ tcg_gen_gvec_mov(MO_64, dstoff, srcoff, sizeof(MMVector), sizeof(MMVector)); /* Set the mask to all 1's */ tcg_gen_gvec_dup_imm(MO_64, maskoff, sizeof(MMQReg), sizeof(MMQReg), ~0LL); } static void gen_vreg_masked_store(DisasContext *ctx, TCGv EA, intptr_t srcoff, intptr_t bitsoff, int slot, bool invert) { intptr_t dstoff = offsetof(CPUHexagonState, vstore[slot].data); intptr_t maskoff = offsetof(CPUHexagonState, vstore[slot].mask); tcg_gen_movi_tl(hex_vstore_pending[slot], 1); tcg_gen_andi_tl(hex_vstore_addr[slot], EA, ~((int32_t)sizeof(MMVector) - 1)); tcg_gen_movi_tl(hex_vstore_size[slot], sizeof(MMVector)); /* Copy the data to the vstore buffer */ tcg_gen_gvec_mov(MO_64, dstoff, srcoff, sizeof(MMVector), sizeof(MMVector)); /* Copy the mask */ tcg_gen_gvec_mov(MO_64, maskoff, bitsoff, sizeof(MMQReg), sizeof(MMQReg)); if (invert) { tcg_gen_gvec_not(MO_64, maskoff, maskoff, sizeof(MMQReg), sizeof(MMQReg)); } } static void vec_to_qvec(size_t size, intptr_t dstoff, intptr_t srcoff) { TCGv_i64 tmp = tcg_temp_new_i64(); TCGv_i64 word = tcg_temp_new_i64(); TCGv_i64 bits = tcg_temp_new_i64(); TCGv_i64 mask = tcg_temp_new_i64(); TCGv_i64 zero = tcg_constant_i64(0); TCGv_i64 ones = tcg_constant_i64(~0); for (int i = 0; i < sizeof(MMVector) / 8; i++) { tcg_gen_ld_i64(tmp, cpu_env, srcoff + i * 8); tcg_gen_movi_i64(mask, 0); for (int j = 0; j < 8; j += size) { tcg_gen_extract_i64(word, tmp, j * 8, size * 8); tcg_gen_movcond_i64(TCG_COND_NE, bits, word, zero, ones, zero); tcg_gen_deposit_i64(mask, mask, bits, j, size); } tcg_gen_st8_i64(mask, cpu_env, dstoff + i); } tcg_temp_free_i64(tmp); tcg_temp_free_i64(word); tcg_temp_free_i64(bits); tcg_temp_free_i64(mask); } void probe_noshuf_load(TCGv va, int s, int mi) { TCGv size = tcg_constant_tl(s); TCGv mem_idx = tcg_constant_tl(mi); gen_helper_probe_noshuf_load(cpu_env, va, size, mem_idx); } /* * Note: Since this function might branch, `val` is * required to be a `tcg_temp_local`. */ void gen_set_usr_field_if(int field, TCGv val) { /* Sets the USR field if `val` is non-zero */ if (reg_field_info[field].width == 1) { TCGv tmp = tcg_temp_new(); tcg_gen_extract_tl(tmp, val, 0, reg_field_info[field].width); tcg_gen_shli_tl(tmp, tmp, reg_field_info[field].offset); tcg_gen_or_tl(hex_new_value[HEX_REG_USR], hex_new_value[HEX_REG_USR], tmp); tcg_temp_free(tmp); } else { TCGLabel *skip_label = gen_new_label(); tcg_gen_brcondi_tl(TCG_COND_EQ, val, 0, skip_label); gen_set_usr_field(field, val); gen_set_label(skip_label); } } void gen_sat_i32(TCGv dest, TCGv source, int width) { TCGv max_val = tcg_constant_tl((1 << (width - 1)) - 1); TCGv min_val = tcg_constant_tl(-(1 << (width - 1))); tcg_gen_smin_tl(dest, source, max_val); tcg_gen_smax_tl(dest, dest, min_val); } void gen_sat_i32_ovfl(TCGv ovfl, TCGv dest, TCGv source, int width) { gen_sat_i32(dest, source, width); tcg_gen_setcond_tl(TCG_COND_NE, ovfl, source, dest); } void gen_satu_i32(TCGv dest, TCGv source, int width) { TCGv max_val = tcg_constant_tl((1 << width) - 1); TCGv zero = tcg_constant_tl(0); tcg_gen_movcond_tl(TCG_COND_GTU, dest, source, max_val, max_val, source); tcg_gen_movcond_tl(TCG_COND_LT, dest, source, zero, zero, dest); } void gen_satu_i32_ovfl(TCGv ovfl, TCGv dest, TCGv source, int width) { gen_satu_i32(dest, source, width); tcg_gen_setcond_tl(TCG_COND_NE, ovfl, source, dest); } void gen_sat_i64(TCGv_i64 dest, TCGv_i64 source, int width) { TCGv_i64 max_val = tcg_constant_i64((1LL << (width - 1)) - 1LL); TCGv_i64 min_val = tcg_constant_i64(-(1LL << (width - 1))); tcg_gen_smin_i64(dest, source, max_val); tcg_gen_smax_i64(dest, dest, min_val); } void gen_sat_i64_ovfl(TCGv ovfl, TCGv_i64 dest, TCGv_i64 source, int width) { TCGv_i64 ovfl_64; gen_sat_i64(dest, source, width); ovfl_64 = tcg_temp_new_i64(); tcg_gen_setcond_i64(TCG_COND_NE, ovfl_64, dest, source); tcg_gen_trunc_i64_tl(ovfl, ovfl_64); tcg_temp_free_i64(ovfl_64); } void gen_satu_i64(TCGv_i64 dest, TCGv_i64 source, int width) { TCGv_i64 max_val = tcg_constant_i64((1LL << width) - 1LL); TCGv_i64 zero = tcg_constant_i64(0); tcg_gen_movcond_i64(TCG_COND_GTU, dest, source, max_val, max_val, source); tcg_gen_movcond_i64(TCG_COND_LT, dest, source, zero, zero, dest); } void gen_satu_i64_ovfl(TCGv ovfl, TCGv_i64 dest, TCGv_i64 source, int width) { TCGv_i64 ovfl_64; gen_satu_i64(dest, source, width); ovfl_64 = tcg_temp_new_i64(); tcg_gen_setcond_i64(TCG_COND_NE, ovfl_64, dest, source); tcg_gen_trunc_i64_tl(ovfl, ovfl_64); tcg_temp_free_i64(ovfl_64); } /* Implements the fADDSAT64 macro in TCG */ void gen_add_sat_i64(TCGv_i64 ret, TCGv_i64 a, TCGv_i64 b) { TCGv_i64 sum = tcg_temp_local_new_i64(); TCGv_i64 xor = tcg_temp_new_i64(); TCGv_i64 cond1 = tcg_temp_new_i64(); TCGv_i64 cond2 = tcg_temp_local_new_i64(); TCGv_i64 cond3 = tcg_temp_new_i64(); TCGv_i64 mask = tcg_constant_i64(0x8000000000000000ULL); TCGv_i64 max_pos = tcg_constant_i64(0x7FFFFFFFFFFFFFFFLL); TCGv_i64 max_neg = tcg_constant_i64(0x8000000000000000LL); TCGv_i64 zero = tcg_constant_i64(0); TCGLabel *no_ovfl_label = gen_new_label(); TCGLabel *ovfl_label = gen_new_label(); TCGLabel *ret_label = gen_new_label(); tcg_gen_add_i64(sum, a, b); tcg_gen_xor_i64(xor, a, b); /* if (xor & mask) */ tcg_gen_and_i64(cond1, xor, mask); tcg_temp_free_i64(xor); tcg_gen_brcondi_i64(TCG_COND_NE, cond1, 0, no_ovfl_label); tcg_temp_free_i64(cond1); /* else if ((a ^ sum) & mask) */ tcg_gen_xor_i64(cond2, a, sum); tcg_gen_and_i64(cond2, cond2, mask); tcg_gen_brcondi_i64(TCG_COND_NE, cond2, 0, ovfl_label); tcg_temp_free_i64(cond2); /* fallthrough to no_ovfl_label branch */ /* if branch */ gen_set_label(no_ovfl_label); tcg_gen_mov_i64(ret, sum); tcg_gen_br(ret_label); /* else if branch */ gen_set_label(ovfl_label); tcg_gen_and_i64(cond3, sum, mask); tcg_temp_free_i64(mask); tcg_temp_free_i64(sum); tcg_gen_movcond_i64(TCG_COND_NE, ret, cond3, zero, max_pos, max_neg); tcg_temp_free_i64(cond3); SET_USR_FIELD(USR_OVF, 1); gen_set_label(ret_label); } #include "tcg_funcs_generated.c.inc" #include "tcg_func_table_generated.c.inc"