Helpers for reading and writing registers Helpers for getting and setting parts of values (e.g., set bit)
Signed-off-by: Taylor Simpson <tsimp...@quicinc.com> --- target/hexagon/genptr_helpers.h | 323 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 323 insertions(+) create mode 100644 target/hexagon/genptr_helpers.h diff --git a/target/hexagon/genptr_helpers.h b/target/hexagon/genptr_helpers.h new file mode 100644 index 0000000..2b91fdb --- /dev/null +++ b/target/hexagon/genptr_helpers.h @@ -0,0 +1,323 @@ +/* + * Copyright (c) 2019 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/>. + */ + +#ifndef GENPTR_HELPERS_H +#define GENPTR_HELPERS_H + +static inline TCGv gen_read_reg(TCGv result, int num) +{ + tcg_gen_mov_tl(result, hex_gpr[num]); + return result; +} + +static inline TCGv gen_read_preg(TCGv pred, uint8_t num) +{ + tcg_gen_mov_tl(pred, hex_pred[num]); + return pred; +} + +static inline TCGv gen_newreg_st(TCGv result, TCGv_env cpu_env, TCGv rnum) +{ + gen_helper_new_value(result, cpu_env, rnum); + return result; +} + +static inline bool is_preloaded(DisasContext *ctx, int num) +{ + int i; + for (i = 0; i < ctx->ctx_reg_log_idx; i++) { + if (ctx->ctx_reg_log[i] == num) { + return true; + } + } + return false; +} + +static inline void gen_log_reg_write(int rnum, TCGv val, int slot, + int is_predicated) +{ + if (is_predicated) { + TCGv one = tcg_const_tl(1); + TCGv zero = tcg_const_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]); + + tcg_temp_free(one); + tcg_temp_free(zero); + tcg_temp_free(slot_mask); + } else { + tcg_gen_mov_tl(hex_new_value[rnum], val); + } +} + +static inline void gen_log_reg_write_pair(int rnum, TCGv_i64 val, int slot, + int is_predicated) +{ + TCGv val32 = tcg_temp_new(); + + if (is_predicated) { + TCGv one = tcg_const_tl(1); + TCGv zero = tcg_const_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]); + + tcg_temp_free(one); + tcg_temp_free(zero); + tcg_temp_free(slot_mask); + } else { + /* Low word */ + tcg_gen_extrl_i64_i32(val32, val); + tcg_gen_mov_tl(hex_new_value[rnum], val32); + /* High word */ + tcg_gen_extrh_i64_i32(val32, val); + tcg_gen_mov_tl(hex_new_value[rnum + 1], val32); + } + + tcg_temp_free(val32); +} + +static inline void gen_log_pred_write(int pnum, TCGv val) +{ + TCGv zero = tcg_const_tl(0); + TCGv base_val = tcg_temp_local_new(); + TCGv and_val = tcg_temp_local_new(); + + /* Multiple writes to the same preg are and'ed together */ + tcg_gen_andi_tl(base_val, val, 0xff); + tcg_gen_and_tl(and_val, base_val, hex_new_pred_value[pnum]); + tcg_gen_movcond_tl(TCG_COND_NE, hex_new_pred_value[pnum], + hex_pred_written[pnum], zero, + and_val, base_val); + tcg_gen_movi_tl(hex_pred_written[pnum], 1); + + tcg_temp_free(zero); + tcg_temp_free(base_val); + tcg_temp_free(and_val); +} + +static inline void gen_read_p3_0(TCGv control_reg) +{ + TCGv pval = tcg_temp_new(); + int i; + tcg_gen_movi_tl(control_reg, 0); + for (i = NUM_PREGS - 1; i >= 0; i--) { + tcg_gen_shli_tl(control_reg, control_reg, 8); + tcg_gen_andi_tl(pval, hex_pred[i], 0xff); + tcg_gen_or_tl(control_reg, control_reg, pval); + } + tcg_temp_free(pval); +} + +static inline void gen_write_p3_0(TCGv tmp) +{ + TCGv control_reg = tcg_temp_new(); + TCGv pred_val = tcg_temp_new(); + int i; + + tcg_gen_mov_tl(control_reg, tmp); + for (i = 0; i < NUM_PREGS; i++) { + tcg_gen_andi_tl(pred_val, control_reg, 0xff); + tcg_gen_mov_tl(hex_pred[i], pred_val); + tcg_gen_shri_tl(control_reg, control_reg, 8); + } + tcg_temp_free(control_reg); + tcg_temp_free(pred_val); +} + +static inline TCGv gen_get_byte(TCGv result, int N, TCGv src, bool sign) +{ + TCGv shift = tcg_const_tl(8 * N); + TCGv mask = tcg_const_tl(0xff); + + tcg_gen_shr_tl(result, src, shift); + tcg_gen_and_tl(result, result, mask); + if (sign) { + tcg_gen_ext8s_tl(result, result); + } else { + tcg_gen_ext8u_tl(result, result); + } + tcg_temp_free(mask); + tcg_temp_free(shift); + + return result; +} + +static inline TCGv gen_get_byte_i64(TCGv result, int N, TCGv_i64 src, bool sign) +{ + TCGv_i64 result_i64 = tcg_temp_new_i64(); + TCGv_i64 shift = tcg_const_i64(8 * N); + TCGv_i64 mask = tcg_const_i64(0xff); + tcg_gen_shr_i64(result_i64, src, shift); + tcg_gen_and_i64(result_i64, result_i64, mask); + tcg_gen_extrl_i64_i32(result, result_i64); + if (sign) { + tcg_gen_ext8s_tl(result, result); + } else { + tcg_gen_ext8u_tl(result, result); + } + tcg_temp_free_i64(result_i64); + tcg_temp_free_i64(shift); + tcg_temp_free_i64(mask); + + return result; + +} +static inline TCGv gen_get_half(TCGv result, int N, TCGv src, bool sign) +{ + TCGv shift = tcg_const_tl(16 * N); + TCGv mask = tcg_const_tl(0xffff); + + tcg_gen_shr_tl(result, src, shift); + tcg_gen_and_tl(result, result, mask); + if (sign) { + tcg_gen_ext16s_tl(result, result); + } else { + tcg_gen_ext16u_tl(result, result); + } + tcg_temp_free(mask); + tcg_temp_free(shift); + + return result; +} + +static inline void gen_set_half(int N, TCGv result, TCGv src) +{ + TCGv mask1 = tcg_const_tl(~(0xffff << (N * 16))); + TCGv mask2 = tcg_const_tl(0xffff); + TCGv shift = tcg_const_tl(N * 16); + TCGv tmp = tcg_temp_new(); + + tcg_gen_and_tl(result, result, mask1); + tcg_gen_and_tl(tmp, src, mask2); + tcg_gen_shli_tl(tmp, tmp, N * 16); + tcg_gen_or_tl(result, result, tmp); + + tcg_temp_free(mask1); + tcg_temp_free(mask2); + tcg_temp_free(shift); + tcg_temp_free(tmp); +} + +static inline void gen_set_half_i64(int N, TCGv_i64 result, TCGv src) +{ + TCGv_i64 mask1 = tcg_const_i64(~(0xffffLL << (N * 16))); + TCGv_i64 mask2 = tcg_const_i64(0xffffLL); + TCGv_i64 shift = tcg_const_i64(N * 16); + TCGv_i64 tmp = tcg_temp_new_i64(); + + tcg_gen_and_i64(result, result, mask1); + tcg_gen_concat_i32_i64(tmp, src, src); + tcg_gen_and_i64(tmp, tmp, mask2); + tcg_gen_shli_i64(tmp, tmp, N * 16); + tcg_gen_or_i64(result, result, tmp); + + tcg_temp_free_i64(mask1); + tcg_temp_free_i64(mask2); + tcg_temp_free_i64(shift); + tcg_temp_free_i64(tmp); +} + +static inline void gen_set_byte(int N, TCGv result, TCGv src) +{ + TCGv mask1 = tcg_const_tl(~(0xff << (N * 8))); + TCGv mask2 = tcg_const_tl(0xff); + TCGv shift = tcg_const_tl(N * 8); + TCGv tmp = tcg_temp_new(); + + tcg_gen_and_tl(result, result, mask1); + tcg_gen_and_tl(tmp, src, mask2); + tcg_gen_shli_tl(tmp, tmp, N * 8); + tcg_gen_or_tl(result, result, tmp); + + tcg_temp_free(mask1); + tcg_temp_free(mask2); + tcg_temp_free(shift); + tcg_temp_free(tmp); +} + +static inline void gen_set_byte_i64(int N, TCGv_i64 result, TCGv src) +{ + TCGv_i64 mask1 = tcg_const_i64(~(0xffLL << (N * 8))); + TCGv_i64 mask2 = tcg_const_i64(0xffLL); + TCGv_i64 shift = tcg_const_i64(N * 8); + TCGv_i64 tmp = tcg_temp_new_i64(); + + tcg_gen_and_i64(result, result, mask1); + tcg_gen_concat_i32_i64(tmp, src, src); + tcg_gen_and_i64(tmp, tmp, mask2); + tcg_gen_shli_i64(tmp, tmp, N * 8); + tcg_gen_or_i64(result, result, tmp); + + tcg_temp_free_i64(mask1); + tcg_temp_free_i64(mask2); + tcg_temp_free_i64(shift); + tcg_temp_free_i64(tmp); +} + +static inline TCGv gen_get_word(TCGv result, int N, TCGv_i64 src, bool sign) +{ + if (N == 0) { + tcg_gen_extrl_i64_i32(result, src); + } else if (N == 1) { + tcg_gen_extrh_i64_i32(result, src); + } else { + g_assert_not_reached(); + } + return result; +} + +static inline TCGv_i64 gen_get_word_i64(TCGv_i64 result, int N, TCGv_i64 src, + bool sign) +{ + TCGv word = tcg_temp_new(); + gen_get_word(word, N, src, sign); + if (sign) { + tcg_gen_ext_i32_i64(result, word); + } else { + tcg_gen_extu_i32_i64(result, word); + } + tcg_temp_free(word); + return result; +} + +static inline TCGv gen_set_bit(int i, TCGv result, TCGv src) +{ + TCGv mask = tcg_const_tl(~(1 << i)); + TCGv bit = tcg_temp_new(); + tcg_gen_shli_tl(bit, src, i); + tcg_gen_and_tl(result, result, mask); + tcg_gen_or_tl(result, result, bit); + tcg_temp_free(mask); + tcg_temp_free(bit); + + return result; +} + +#endif -- 2.7.4
