| /* |
| * Copyright(c) 2019-2023 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 <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "cpu.h" |
| #include "internal.h" |
| #include "tcg/tcg-op.h" |
| #include "tcg/tcg-op-gvec.h" |
| #include "exec/helper-gen.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) |
| |
| 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); |
| } |
| } |
| |
| TCGv get_result_gpr(DisasContext *ctx, int rnum) |
| { |
| if (ctx->need_commit) { |
| if (rnum == HEX_REG_USR) { |
| return hex_new_value_usr; |
| } else { |
| if (ctx->new_value[rnum] == NULL) { |
| ctx->new_value[rnum] = tcg_temp_new(); |
| tcg_gen_movi_tl(ctx->new_value[rnum], 0); |
| } |
| return ctx->new_value[rnum]; |
| } |
| } else { |
| return hex_gpr[rnum]; |
| } |
| } |
| |
| static TCGv_i64 get_result_gpr_pair(DisasContext *ctx, int rnum) |
| { |
| TCGv_i64 result = tcg_temp_new_i64(); |
| tcg_gen_concat_i32_i64(result, get_result_gpr(ctx, rnum), |
| get_result_gpr(ctx, rnum + 1)); |
| return result; |
| } |
| |
| void gen_log_reg_write(DisasContext *ctx, 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(get_result_gpr(ctx, 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_reg_write_pair(DisasContext *ctx, int rnum, TCGv_i64 val) |
| { |
| TCGv val32 = tcg_temp_new(); |
| |
| /* Low word */ |
| tcg_gen_extrl_i64_i32(val32, val); |
| gen_log_reg_write(ctx, rnum, val32); |
| |
| /* High word */ |
| tcg_gen_extrh_i64_i32(val32, val); |
| gen_log_reg_write(ctx, rnum + 1, val32); |
| } |
| |
| TCGv get_result_pred(DisasContext *ctx, int pnum) |
| { |
| if (ctx->need_commit) { |
| if (ctx->new_pred_value[pnum] == NULL) { |
| ctx->new_pred_value[pnum] = tcg_temp_new(); |
| tcg_gen_movi_tl(ctx->new_pred_value[pnum], 0); |
| } |
| return ctx->new_pred_value[pnum]; |
| } else { |
| return hex_pred[pnum]; |
| } |
| } |
| |
| void gen_log_pred_write(DisasContext *ctx, int pnum, TCGv val) |
| { |
| TCGv pred = get_result_pred(ctx, pnum); |
| 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(pred, base_val); |
| } else { |
| tcg_gen_and_tl(pred, pred, base_val); |
| } |
| if (HEX_DEBUG) { |
| tcg_gen_ori_tl(ctx->pred_written, ctx->pred_written, 1 << pnum); |
| } |
| set_bit(pnum, ctx->pregs_written); |
| } |
| |
| 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]); |
| } 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); |
| } 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]); |
| } 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); |
| } |
| } |
| |
| /* |
| * 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(ctx, reg_num, val); |
| 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 result = get_result_gpr(ctx, reg_num + 1); |
| 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); |
| tcg_gen_mov_tl(result, val32); |
| } else { |
| gen_log_reg_write_pair(ctx, reg_num, val); |
| 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); |
| |
| 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); |
| } |
| |
| 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); |
| } |
| |
| static inline void gen_load_locked4u(TCGv dest, TCGv vaddr, int mem_index) |
| { |
| tcg_gen_qemu_ld_tl(dest, vaddr, mem_index, MO_TEUL); |
| 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_ld_i64(dest, vaddr, mem_index, MO_TEUQ); |
| 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_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_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); |
| } |
| |
| #ifndef CONFIG_HEXAGON_IDEF_PARSER |
| static TCGv gen_slotval(DisasContext *ctx) |
| { |
| int slotval = (ctx->pkt->pkt_has_store_s1 & 1) | (ctx->insn->slot << 1); |
| return tcg_constant_tl(slotval); |
| } |
| #endif |
| |
| 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 tcg_env, TCGv vaddr, TCGv src, uint32_t slot) |
| { |
| gen_store32(vaddr, src, 1, slot); |
| } |
| |
| void gen_store1i(TCGv_env tcg_env, TCGv vaddr, int32_t src, uint32_t slot) |
| { |
| TCGv tmp = tcg_constant_tl(src); |
| gen_store1(tcg_env, vaddr, tmp, slot); |
| } |
| |
| void gen_store2(TCGv_env tcg_env, TCGv vaddr, TCGv src, uint32_t slot) |
| { |
| gen_store32(vaddr, src, 2, slot); |
| } |
| |
| void gen_store2i(TCGv_env tcg_env, TCGv vaddr, int32_t src, uint32_t slot) |
| { |
| TCGv tmp = tcg_constant_tl(src); |
| gen_store2(tcg_env, vaddr, tmp, slot); |
| } |
| |
| void gen_store4(TCGv_env tcg_env, TCGv vaddr, TCGv src, uint32_t slot) |
| { |
| gen_store32(vaddr, src, 4, slot); |
| } |
| |
| void gen_store4i(TCGv_env tcg_env, TCGv vaddr, int32_t src, uint32_t slot) |
| { |
| TCGv tmp = tcg_constant_tl(src); |
| gen_store4(tcg_env, vaddr, tmp, slot); |
| } |
| |
| void gen_store8(TCGv_env tcg_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 tcg_env, TCGv vaddr, int64_t src, uint32_t slot) |
| { |
| TCGv_i64 tmp = tcg_constant_i64(src); |
| gen_store8(tcg_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], |
| ctx->branch_taken, tcg_constant_tl(0), |
| hex_gpr[HEX_REG_PC], addr); |
| tcg_gen_movi_tl(ctx->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(ctx->branch_taken, pred); |
| } |
| ctx->branch_dest = dest; |
| } |
| } |
| |
| void gen_set_usr_field(DisasContext *ctx, int field, TCGv val) |
| { |
| TCGv usr = get_result_gpr(ctx, HEX_REG_USR); |
| tcg_gen_deposit_tl(usr, usr, val, |
| reg_field_info[field].offset, |
| reg_field_info[field].width); |
| } |
| |
| void gen_set_usr_fieldi(DisasContext *ctx, int field, int x) |
| { |
| if (reg_field_info[field].width == 1) { |
| TCGv usr = get_result_gpr(ctx, HEX_REG_USR); |
| target_ulong bit = 1 << reg_field_info[field].offset; |
| if ((x & 1) == 1) { |
| tcg_gen_ori_tl(usr, usr, bit); |
| } else { |
| tcg_gen_andi_tl(usr, usr, ~bit); |
| } |
| } else { |
| TCGv val = tcg_constant_tl(x); |
| gen_set_usr_field(ctx, 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); |
| } |
| |
| #ifndef CONFIG_HEXAGON_IDEF_PARSER |
| static inline void gen_loop0r(DisasContext *ctx, TCGv RsV, int riV) |
| { |
| fIMMEXT(riV); |
| fPCALIGN(riV); |
| gen_log_reg_write(ctx, HEX_REG_LC0, RsV); |
| gen_log_reg_write(ctx, HEX_REG_SA0, tcg_constant_tl(ctx->pkt->pc + riV)); |
| gen_set_usr_fieldi(ctx, USR_LPCFG, 0); |
| } |
| |
| static void gen_loop0i(DisasContext *ctx, int count, int riV) |
| { |
| gen_loop0r(ctx, tcg_constant_tl(count), riV); |
| } |
| |
| static inline void gen_loop1r(DisasContext *ctx, TCGv RsV, int riV) |
| { |
| fIMMEXT(riV); |
| fPCALIGN(riV); |
| gen_log_reg_write(ctx, HEX_REG_LC1, RsV); |
| gen_log_reg_write(ctx, HEX_REG_SA1, tcg_constant_tl(ctx->pkt->pc + riV)); |
| } |
| |
| static void gen_loop1i(DisasContext *ctx, int count, int riV) |
| { |
| gen_loop1r(ctx, tcg_constant_tl(count), riV); |
| } |
| |
| static void gen_ploopNsr(DisasContext *ctx, int N, TCGv RsV, int riV) |
| { |
| fIMMEXT(riV); |
| fPCALIGN(riV); |
| gen_log_reg_write(ctx, HEX_REG_LC0, RsV); |
| gen_log_reg_write(ctx, HEX_REG_SA0, tcg_constant_tl(ctx->pkt->pc + riV)); |
| gen_set_usr_fieldi(ctx, USR_LPCFG, N); |
| gen_log_pred_write(ctx, 3, tcg_constant_tl(0)); |
| } |
| |
| static void gen_ploopNsi(DisasContext *ctx, int N, int count, int riV) |
| { |
| gen_ploopNsr(ctx, N, tcg_constant_tl(count), riV); |
| } |
| |
| static inline void gen_comparei(TCGCond cond, TCGv res, TCGv arg1, int arg2) |
| { |
| gen_compare(cond, res, arg1, tcg_constant_tl(arg2)); |
| } |
| #endif |
| |
| 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_jumpr31(DisasContext *ctx, TCGCond cond, TCGv pred) |
| { |
| TCGv LSB = tcg_temp_new(); |
| tcg_gen_andi_tl(LSB, pred, 1); |
| gen_cond_jumpr(ctx, hex_gpr[HEX_REG_LR], cond, LSB); |
| } |
| |
| 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); |
| } else { |
| TCGv pred = tcg_temp_new(); |
| tcg_gen_mov_tl(pred, ctx->new_pred_value[pnum]); |
| gen_cond_jump(ctx, cond2, pred, pc_off); |
| } |
| } |
| |
| 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); |
| } else { |
| TCGv pred = tcg_temp_new(); |
| tcg_gen_mov_tl(pred, ctx->new_pred_value[pnum]); |
| gen_cond_jump(ctx, cond, pred, pc_off); |
| } |
| } |
| |
| 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); |
| } |
| |
| 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 lr = get_result_gpr(ctx, HEX_REG_LR); |
| tcg_gen_movi_tl(lr, ctx->next_PC); |
| gen_write_new_pc_pcrel(ctx, pc_off, TCG_COND_ALWAYS, NULL); |
| } |
| |
| static void gen_callr(DisasContext *ctx, TCGv new_pc) |
| { |
| TCGv lr = get_result_gpr(ctx, HEX_REG_LR); |
| tcg_gen_movi_tl(lr, ctx->next_PC); |
| gen_write_new_pc_addr(ctx, new_pc, TCG_COND_ALWAYS, NULL); |
| } |
| |
| static void gen_cond_call(DisasContext *ctx, TCGv pred, |
| TCGCond cond, int pc_off) |
| { |
| TCGv lr = get_result_gpr(ctx, HEX_REG_LR); |
| TCGv lsb = tcg_temp_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_gen_movi_tl(lr, ctx->next_PC); |
| gen_set_label(skip); |
| } |
| |
| static void gen_cond_callr(DisasContext *ctx, |
| TCGCond cond, TCGv pred, TCGv new_pc) |
| { |
| TCGv lsb = tcg_temp_new(); |
| TCGLabel *skip = gen_new_label(); |
| tcg_gen_andi_tl(lsb, pred, 1); |
| tcg_gen_brcondi_tl(cond, lsb, 0, skip); |
| gen_callr(ctx, new_pc); |
| gen_set_label(skip); |
| } |
| |
| #ifndef CONFIG_HEXAGON_IDEF_PARSER |
| /* frame = ((LR << 32) | FP) ^ (FRAMEKEY << 32)) */ |
| static TCGv_i64 gen_frame_scramble(void) |
| { |
| TCGv_i64 frame = tcg_temp_new_i64(); |
| TCGv tmp = tcg_temp_new(); |
| tcg_gen_xor_tl(tmp, hex_gpr[HEX_REG_LR], hex_gpr[HEX_REG_FRAMEKEY]); |
| tcg_gen_concat_i32_i64(frame, hex_gpr[HEX_REG_FP], tmp); |
| return frame; |
| } |
| #endif |
| |
| /* frame ^= (int64_t)FRAMEKEY << 32 */ |
| static void gen_frame_unscramble(TCGv_i64 frame) |
| { |
| TCGv_i64 framekey = tcg_temp_new_i64(); |
| tcg_gen_extu_i32_i64(framekey, hex_gpr[HEX_REG_FRAMEKEY]); |
| tcg_gen_shli_i64(framekey, framekey, 32); |
| tcg_gen_xor_i64(frame, frame, framekey); |
| } |
| |
| static void gen_load_frame(DisasContext *ctx, TCGv_i64 frame, TCGv EA) |
| { |
| Insn *insn = ctx->insn; /* Needed for CHECK_NOSHUF */ |
| CHECK_NOSHUF(EA, 8); |
| tcg_gen_qemu_ld_i64(frame, EA, ctx->mem_idx, MO_TEUQ); |
| } |
| |
| #ifndef CONFIG_HEXAGON_IDEF_PARSER |
| /* Stack overflow check */ |
| static void gen_framecheck(TCGv EA, int framesize) |
| { |
| /* Not modelled in linux-user mode */ |
| /* Placeholder for system mode */ |
| #ifndef CONFIG_USER_ONLY |
| g_assert_not_reached(); |
| #endif |
| } |
| |
| static void gen_allocframe(DisasContext *ctx, TCGv r29, int framesize) |
| { |
| TCGv r30 = tcg_temp_new(); |
| TCGv_i64 frame; |
| tcg_gen_addi_tl(r30, r29, -8); |
| frame = gen_frame_scramble(); |
| gen_store8(tcg_env, r30, frame, ctx->insn->slot); |
| gen_log_reg_write(ctx, HEX_REG_FP, r30); |
| gen_framecheck(r30, framesize); |
| tcg_gen_subi_tl(r29, r30, framesize); |
| } |
| |
| static void gen_deallocframe(DisasContext *ctx, TCGv_i64 r31_30, TCGv r30) |
| { |
| TCGv r29 = tcg_temp_new(); |
| TCGv_i64 frame = tcg_temp_new_i64(); |
| gen_load_frame(ctx, frame, r30); |
| gen_frame_unscramble(frame); |
| tcg_gen_mov_i64(r31_30, frame); |
| tcg_gen_addi_tl(r29, r30, 8); |
| gen_log_reg_write(ctx, HEX_REG_SP, r29); |
| } |
| #endif |
| |
| static void gen_return(DisasContext *ctx, TCGv_i64 dst, TCGv src) |
| { |
| /* |
| * frame = *src |
| * dst = frame_unscramble(frame) |
| * SP = src + 8 |
| * PC = dst.w[1] |
| */ |
| TCGv_i64 frame = tcg_temp_new_i64(); |
| TCGv r31 = tcg_temp_new(); |
| TCGv r29 = get_result_gpr(ctx, HEX_REG_SP); |
| |
| gen_load_frame(ctx, frame, src); |
| gen_frame_unscramble(frame); |
| tcg_gen_mov_i64(dst, frame); |
| tcg_gen_addi_tl(r29, src, 8); |
| tcg_gen_extrh_i64_i32(r31, dst); |
| gen_jumpr(ctx, r31); |
| } |
| |
| /* if (pred) dst = dealloc_return(src):raw */ |
| static void gen_cond_return(DisasContext *ctx, TCGv_i64 dst, TCGv src, |
| TCGv pred, TCGCond cond) |
| { |
| TCGv LSB = tcg_temp_new(); |
| TCGLabel *skip = gen_new_label(); |
| tcg_gen_andi_tl(LSB, pred, 1); |
| |
| tcg_gen_brcondi_tl(cond, LSB, 0, skip); |
| gen_return(ctx, dst, src); |
| gen_set_label(skip); |
| } |
| |
| /* sub-instruction version (no RddV, so handle it manually) */ |
| static void gen_cond_return_subinsn(DisasContext *ctx, TCGCond cond, TCGv pred) |
| { |
| TCGv_i64 RddV = get_result_gpr_pair(ctx, HEX_REG_FP); |
| gen_cond_return(ctx, RddV, hex_gpr[HEX_REG_FP], pred, cond); |
| gen_log_reg_write_pair(ctx, HEX_REG_FP, RddV); |
| } |
| |
| static void gen_endloop0(DisasContext *ctx) |
| { |
| TCGv lpcfg = tcg_temp_new(); |
| |
| GET_USR_FIELD(USR_LPCFG, lpcfg); |
| |
| /* |
| * if (lpcfg == 1) { |
| * p3 = 0xff; |
| * } |
| */ |
| TCGLabel *label1 = gen_new_label(); |
| tcg_gen_brcondi_tl(TCG_COND_NE, lpcfg, 1, label1); |
| { |
| gen_log_pred_write(ctx, 3, tcg_constant_tl(0xff)); |
| } |
| 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); |
| gen_set_usr_field(ctx, 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 (LC0 > 1) { |
| * PC = SA0; |
| * LC0--; |
| * } |
| */ |
| TCGLabel *label3 = gen_new_label(); |
| tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC0], 1, label3); |
| { |
| TCGv lc0 = get_result_gpr(ctx, HEX_REG_LC0); |
| gen_jumpr(ctx, hex_gpr[HEX_REG_SA0]); |
| tcg_gen_subi_tl(lc0, hex_gpr[HEX_REG_LC0], 1); |
| } |
| gen_set_label(label3); |
| } |
| } |
| |
| static void gen_endloop1(DisasContext *ctx) |
| { |
| /* |
| * if (LC1 > 1) { |
| * PC = SA1; |
| * LC1--; |
| * } |
| */ |
| TCGLabel *label = gen_new_label(); |
| tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC1], 1, label); |
| { |
| TCGv lc1 = get_result_gpr(ctx, HEX_REG_LC1); |
| gen_jumpr(ctx, hex_gpr[HEX_REG_SA1]); |
| tcg_gen_subi_tl(lc1, hex_gpr[HEX_REG_LC1], 1); |
| } |
| gen_set_label(label); |
| } |
| |
| static void gen_endloop01(DisasContext *ctx) |
| { |
| TCGv lpcfg = tcg_temp_new(); |
| TCGLabel *label1 = gen_new_label(); |
| TCGLabel *label2 = gen_new_label(); |
| TCGLabel *label3 = gen_new_label(); |
| TCGLabel *done = gen_new_label(); |
| |
| GET_USR_FIELD(USR_LPCFG, lpcfg); |
| |
| /* |
| * if (lpcfg == 1) { |
| * p3 = 0xff; |
| * } |
| */ |
| tcg_gen_brcondi_tl(TCG_COND_NE, lpcfg, 1, label1); |
| { |
| gen_log_pred_write(ctx, 3, tcg_constant_tl(0xff)); |
| } |
| gen_set_label(label1); |
| |
| /* |
| * if (lpcfg) { |
| * SET_USR_FIELD(USR_LPCFG, lpcfg - 1); |
| * } |
| */ |
| tcg_gen_brcondi_tl(TCG_COND_EQ, lpcfg, 0, label2); |
| { |
| tcg_gen_subi_tl(lpcfg, lpcfg, 1); |
| gen_set_usr_field(ctx, USR_LPCFG, lpcfg); |
| } |
| gen_set_label(label2); |
| |
| /* |
| * if (LC0 > 1) { |
| * PC = SA0; |
| * LC0--; |
| * } else if (LC1 > 1) { |
| * PC = SA1; |
| * LC1--; |
| * } |
| */ |
| tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC0], 1, label3); |
| { |
| TCGv lc0 = get_result_gpr(ctx, HEX_REG_LC0); |
| gen_jumpr(ctx, hex_gpr[HEX_REG_SA0]); |
| tcg_gen_subi_tl(lc0, hex_gpr[HEX_REG_LC0], 1); |
| tcg_gen_br(done); |
| } |
| gen_set_label(label3); |
| tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC1], 1, done); |
| { |
| TCGv lc1 = get_result_gpr(ctx, HEX_REG_LC1); |
| gen_jumpr(ctx, hex_gpr[HEX_REG_SA1]); |
| tcg_gen_subi_tl(lc1, hex_gpr[HEX_REG_LC1], 1); |
| } |
| gen_set_label(done); |
| } |
| |
| 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); |
| } |
| |
| 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); |
| } |
| |
| /* Shift left with saturation */ |
| static void gen_shl_sat(DisasContext *ctx, TCGv dst, TCGv src, TCGv shift_amt) |
| { |
| TCGv tmp = tcg_temp_new(); /* In case dst == src */ |
| TCGv usr = get_result_gpr(ctx, HEX_REG_USR); |
| 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, tmp, sh32, shift_amt, |
| src, tcg_constant_tl(0)); |
| tcg_gen_shl_tl(tmp, tmp, sh32); |
| tcg_gen_sar_tl(dst_sar, tmp, 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(usr, usr, ovf); |
| |
| tcg_gen_movcond_tl(TCG_COND_EQ, dst, dst_sar, src, tmp, 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); |
| } |
| |
| /* Bidirectional shift right with saturation */ |
| static void gen_asr_r_r_sat(DisasContext *ctx, TCGv RdV, TCGv RsV, TCGv RtV) |
| { |
| TCGv shift_amt = tcg_temp_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(ctx, 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); |
| } |
| |
| /* Bidirectional shift left with saturation */ |
| static void gen_asl_r_r_sat(DisasContext *ctx, TCGv RdV, TCGv RsV, TCGv RtV) |
| { |
| TCGv shift_amt = tcg_temp_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(ctx, RdV, RsV, shift_amt); |
| |
| gen_set_label(done); |
| } |
| |
| static void gen_insert_rp(DisasContext *ctx, TCGv RxV, TCGv RsV, TCGv_i64 RttV) |
| { |
| /* |
| * int width = fZXTN(6, 32, (fGETWORD(1, RttV))); |
| * int offset = fSXTN(7, 32, (fGETWORD(0, RttV))); |
| * size8u_t mask = ((fCONSTLL(1) << width) - 1); |
| * if (offset < 0) { |
| * RxV = 0; |
| * } else { |
| * RxV &= ~(mask << offset); |
| * RxV |= ((RsV & mask) << offset); |
| * } |
| */ |
| |
| TCGv width = tcg_temp_new(); |
| TCGv offset = tcg_temp_new(); |
| TCGv_i64 mask = tcg_temp_new_i64(); |
| TCGv_i64 result = tcg_temp_new_i64(); |
| TCGv_i64 tmp = tcg_temp_new_i64(); |
| TCGv_i64 offset64 = tcg_temp_new_i64(); |
| TCGLabel *label = gen_new_label(); |
| TCGLabel *done = gen_new_label(); |
| |
| tcg_gen_extrh_i64_i32(width, RttV); |
| tcg_gen_extract_tl(width, width, 0, 6); |
| tcg_gen_extrl_i64_i32(offset, RttV); |
| tcg_gen_sextract_tl(offset, offset, 0, 7); |
| /* Possible values for offset are -64 .. 63 */ |
| tcg_gen_brcondi_tl(TCG_COND_GE, offset, 0, label); |
| /* For negative offsets, zero out the result */ |
| tcg_gen_movi_tl(RxV, 0); |
| tcg_gen_br(done); |
| gen_set_label(label); |
| /* At this point, possible values of offset are 0 .. 63 */ |
| tcg_gen_ext_i32_i64(mask, width); |
| tcg_gen_shl_i64(mask, tcg_constant_i64(1), mask); |
| tcg_gen_subi_i64(mask, mask, 1); |
| tcg_gen_extu_i32_i64(result, RxV); |
| tcg_gen_ext_i32_i64(tmp, offset); |
| tcg_gen_shl_i64(tmp, mask, tmp); |
| tcg_gen_andc_i64(result, result, tmp); |
| tcg_gen_extu_i32_i64(tmp, RsV); |
| tcg_gen_and_i64(tmp, tmp, mask); |
| tcg_gen_extu_i32_i64(offset64, offset); |
| tcg_gen_shl_i64(tmp, tmp, offset64); |
| tcg_gen_or_i64(result, result, tmp); |
| tcg_gen_extrl_i64_i32(RxV, result); |
| gen_set_label(done); |
| } |
| |
| static void gen_asr_r_svw_trun(DisasContext *ctx, TCGv RdV, |
| TCGv_i64 RssV, TCGv RtV) |
| { |
| /* |
| * for (int i = 0; i < 2; i++) { |
| * fSETHALF(i, RdV, fGETHALF(0, ((fSXTN(7, 32, RtV) > 0) ? |
| * (fCAST4_8s(fGETWORD(i, RssV)) >> fSXTN(7, 32, RtV)) : |
| * (fCAST4_8s(fGETWORD(i, RssV)) << -fSXTN(7, 32, RtV))))); |
| * } |
| */ |
| TCGv shift_amt32 = tcg_temp_new(); |
| TCGv_i64 shift_amt64 = tcg_temp_new_i64(); |
| TCGv_i64 tmp64 = tcg_temp_new_i64(); |
| TCGv tmp32 = tcg_temp_new(); |
| TCGLabel *label = gen_new_label(); |
| TCGLabel *zero = gen_new_label(); |
| TCGLabel *done = gen_new_label(); |
| |
| tcg_gen_sextract_tl(shift_amt32, RtV, 0, 7); |
| /* Possible values of shift_amt32 are -64 .. 63 */ |
| tcg_gen_brcondi_tl(TCG_COND_LE, shift_amt32, 0, label); |
| /* After branch, possible values of shift_amt32 are 1 .. 63 */ |
| tcg_gen_ext_i32_i64(shift_amt64, shift_amt32); |
| for (int i = 0; i < 2; i++) { |
| tcg_gen_sextract_i64(tmp64, RssV, i * 32, 32); |
| tcg_gen_sar_i64(tmp64, tmp64, shift_amt64); |
| tcg_gen_extrl_i64_i32(tmp32, tmp64); |
| tcg_gen_deposit_tl(RdV, RdV, tmp32, i * 16, 16); |
| } |
| tcg_gen_br(done); |
| gen_set_label(label); |
| tcg_gen_neg_tl(shift_amt32, shift_amt32); |
| /*At this point, possible values of shift_amt32 are 0 .. 64 */ |
| tcg_gen_brcondi_tl(TCG_COND_GT, shift_amt32, 63, zero); |
| /*At this point, possible values of shift_amt32 are 0 .. 63 */ |
| tcg_gen_ext_i32_i64(shift_amt64, shift_amt32); |
| for (int i = 0; i < 2; i++) { |
| tcg_gen_sextract_i64(tmp64, RssV, i * 32, 32); |
| tcg_gen_shl_i64(tmp64, tmp64, shift_amt64); |
| tcg_gen_extrl_i64_i32(tmp32, tmp64); |
| tcg_gen_deposit_tl(RdV, RdV, tmp32, i * 16, 16); |
| } |
| tcg_gen_br(done); |
| gen_set_label(zero); |
| /* When the shift_amt is 64, zero out the result */ |
| tcg_gen_movi_tl(RdV, 0); |
| gen_set_label(done); |
| } |
| |
| 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) |
| { |
| intptr_t dstoff; |
| |
| 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)); |
| } else { |
| dstoff = ctx_tmp_vreg_off(ctx, num, 1, false); |
| tcg_gen_gvec_mov(MO_64, dstoff, srcoff, |
| sizeof(MMVector), sizeof(MMVector)); |
| } |
| } |
| |
| static void gen_log_vreg_write_pair(DisasContext *ctx, intptr_t srcoff, int num, |
| VRegWriteType type) |
| { |
| gen_log_vreg_write(ctx, srcoff, num ^ 0, type); |
| srcoff += sizeof(MMVector); |
| gen_log_vreg_write(ctx, srcoff, num ^ 1, type); |
| } |
| |
| static intptr_t get_result_qreg(DisasContext *ctx, int qnum) |
| { |
| if (ctx->need_commit) { |
| return offsetof(CPUHexagonState, future_QRegs[qnum]); |
| } else { |
| return offsetof(CPUHexagonState, QRegs[qnum]); |
| } |
| } |
| |
| 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_ld_i64(tmp, src, ctx->mem_idx, MO_TEUQ); |
| tcg_gen_addi_tl(src, src, 8); |
| tcg_gen_st_i64(tmp, tcg_env, dstoff + i * 8); |
| } |
| } |
| |
| 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(tcg_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, tcg_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, tcg_env, dstoff + i); |
| } |
| } |
| |
| 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(tcg_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(DisasContext *ctx, int field, TCGv val) |
| { |
| /* Sets the USR field if `val` is non-zero */ |
| if (reg_field_info[field].width == 1) { |
| TCGv usr = get_result_gpr(ctx, HEX_REG_USR); |
| 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(usr, usr, tmp); |
| } else { |
| TCGLabel *skip_label = gen_new_label(); |
| tcg_gen_brcondi_tl(TCG_COND_EQ, val, 0, skip_label); |
| gen_set_usr_field(ctx, 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) |
| { |
| TCGv tmp = tcg_temp_new(); /* In case dest == source */ |
| gen_sat_i32(tmp, source, width); |
| tcg_gen_setcond_tl(TCG_COND_NE, ovfl, source, tmp); |
| tcg_gen_mov_tl(dest, tmp); |
| } |
| |
| void gen_satu_i32(TCGv dest, TCGv source, int width) |
| { |
| TCGv tmp = tcg_temp_new(); /* In case dest == source */ |
| TCGv max_val = tcg_constant_tl((1 << width) - 1); |
| TCGv zero = tcg_constant_tl(0); |
| tcg_gen_movcond_tl(TCG_COND_GTU, tmp, source, max_val, max_val, source); |
| tcg_gen_movcond_tl(TCG_COND_LT, tmp, source, zero, zero, tmp); |
| tcg_gen_mov_tl(dest, tmp); |
| } |
| |
| void gen_satu_i32_ovfl(TCGv ovfl, TCGv dest, TCGv source, int width) |
| { |
| TCGv tmp = tcg_temp_new(); /* In case dest == source */ |
| gen_satu_i32(tmp, source, width); |
| tcg_gen_setcond_tl(TCG_COND_NE, ovfl, source, tmp); |
| tcg_gen_mov_tl(dest, tmp); |
| } |
| |
| 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 tmp = tcg_temp_new_i64(); /* In case dest == source */ |
| TCGv_i64 ovfl_64; |
| gen_sat_i64(tmp, source, width); |
| ovfl_64 = tcg_temp_new_i64(); |
| tcg_gen_setcond_i64(TCG_COND_NE, ovfl_64, tmp, source); |
| tcg_gen_mov_i64(dest, tmp); |
| tcg_gen_trunc_i64_tl(ovfl, ovfl_64); |
| } |
| |
| void gen_satu_i64(TCGv_i64 dest, TCGv_i64 source, int width) |
| { |
| TCGv_i64 tmp = tcg_temp_new_i64(); /* In case dest == source */ |
| TCGv_i64 max_val = tcg_constant_i64((1LL << width) - 1LL); |
| TCGv_i64 zero = tcg_constant_i64(0); |
| tcg_gen_movcond_i64(TCG_COND_GTU, tmp, source, max_val, max_val, source); |
| tcg_gen_movcond_i64(TCG_COND_LT, tmp, source, zero, zero, tmp); |
| tcg_gen_mov_i64(dest, tmp); |
| } |
| |
| void gen_satu_i64_ovfl(TCGv ovfl, TCGv_i64 dest, TCGv_i64 source, int width) |
| { |
| TCGv_i64 tmp = tcg_temp_new_i64(); /* In case dest == source */ |
| TCGv_i64 ovfl_64; |
| gen_satu_i64(tmp, source, width); |
| ovfl_64 = tcg_temp_new_i64(); |
| tcg_gen_setcond_i64(TCG_COND_NE, ovfl_64, tmp, source); |
| tcg_gen_mov_i64(dest, tmp); |
| tcg_gen_trunc_i64_tl(ovfl, ovfl_64); |
| } |
| |
| /* Implements the fADDSAT64 macro in TCG */ |
| void gen_add_sat_i64(DisasContext *ctx, TCGv_i64 ret, TCGv_i64 a, TCGv_i64 b) |
| { |
| TCGv_i64 sum = tcg_temp_new_i64(); |
| TCGv_i64 xor = tcg_temp_new_i64(); |
| TCGv_i64 cond1 = tcg_temp_new_i64(); |
| TCGv_i64 cond2 = tcg_temp_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_gen_brcondi_i64(TCG_COND_NE, cond1, 0, no_ovfl_label); |
| |
| /* 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); |
| /* 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_gen_movcond_i64(TCG_COND_NE, ret, cond3, zero, max_pos, max_neg); |
| gen_set_usr_fieldi(ctx, USR_OVF, 1); |
| |
| gen_set_label(ret_label); |
| } |
| |
| #include "tcg_funcs_generated.c.inc" |
| #include "tcg_func_table_generated.c.inc" |
