components/xtensa/xt_trax.c (ESP-IDF)

// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #include <stdio.h> #include <stdbool.h> #include "esp_err.h" #include "xtensa-debug-module.h" #include "eri.h" bool xt_trax_trace_is_active(void) { return eri_read(ERI_TRAX_TRAXSTAT)&TRAXSTAT_TRACT; } static void _xt_trax_start_trace(bool instructions) { uint32_t v; eri_write(ERI_TRAX_PCMATCHCTRL, 31); //do not stop at any pc match v=TRAXCTRL_TREN | TRAXCTRL_TMEN | TRAXCTRL_PTOWS | (1<<TRAXCTRL_SMPER_SHIFT); if (instructions) { v|=TRAXCTRL_CNTU; } //Enable trace. This trace has no stop condition and will just keep on running. eri_write(ERI_TRAX_TRAXCTRL, v); } void xt_trax_start_trace_instructions(void) { _xt_trax_start_trace(true); } void xt_trax_start_trace_words(void) { _xt_trax_start_trace(false); } void xt_trax_trigger_traceend_after_delay(int delay) { eri_write(ERI_TRAX_DELAYCNT, delay); eri_write(ERI_TRAX_TRAXCTRL, eri_read(ERI_TRAX_TRAXCTRL)|TRAXCTRL_TRSTP); //ToDo: This will probably trigger a trace done interrupt. ToDo: Fix, but how? -JD eri_write(ERI_TRAX_TRAXCTRL, 0); }