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+/*
+ * Copyright(c) 2019-2020 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 HEXAGON_GENPTR_HELPERS_H
+#define HEXAGON_GENPTR_HELPERS_H
+
+#include "tcg/tcg.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]);
+#if HEX_DEBUG
+ /* Do this so HELPER(debug_commit_end) will know */
+ tcg_gen_movcond_tl(TCG_COND_EQ, hex_reg_written[rnum], slot_mask, zero,
+ one, hex_reg_written[rnum]);
+#endif
+
+ tcg_temp_free(one);
+ tcg_temp_free(zero);
+ tcg_temp_free(slot_mask);
+ } else {
+ 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);
+#endif
+ }
+}
+
+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_new();
+ TCGv and_val = tcg_temp_new();
+ TCGv pred_written = tcg_temp_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_andi_tl(pred_written, hex_pred_written, 1 << pnum);
+ tcg_gen_movcond_tl(TCG_COND_NE, hex_new_pred_value[pnum],
+ pred_written, zero,
+ and_val, base_val);
+ tcg_gen_ori_tl(hex_pred_written, hex_pred_written, 1 << pnum);
+
+ tcg_temp_free(zero);
+ tcg_temp_free(base_val);
+ tcg_temp_free(and_val);
+ tcg_temp_free(pred_written);
+}
+
+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
Helpers for reading and writing registers Helpers for getting and setting parts of values (e.g., set bit) Signed-off-by: Taylor Simpson <tsimpson@quicinc.com> --- target/hexagon/genptr_helpers.h | 337 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 337 insertions(+) create mode 100644 target/hexagon/genptr_helpers.h