ysyx-workbench/nemu/src/utils/log.c

/***************************************************************************************
* Copyright (c) 2014-2022 Zihao Yu, Nanjing University
*
* NEMU is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
*          http://license.coscl.org.cn/MulanPSL2
*
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
*
* See the Mulan PSL v2 for more details.
***************************************************************************************/

#include <common.h>

extern uint64_t g_nr_guest_inst;

#ifndef CONFIG_TARGET_AM
FILE *log_fp = NULL;

void init_log(const char *log_file) {
  log_fp = stdout;
  if (log_file != NULL) {
    FILE *fp = fopen(log_file, "w");
    Assert(fp, "Can not open '%s'", log_file);
    log_fp = fp;
  }
  Log("Log is written to %s", log_file ? log_file : "stdout");
}

bool log_enable() {
  return MUXDEF(CONFIG_TRACE, (g_nr_guest_inst >= CONFIG_TRACE_START) &&
         (g_nr_guest_inst <= CONFIG_TRACE_END), false);
}
#endif

IFDEF(CONFIG_ITRACE, char logbuf[CONFIG_ITRACE_BUFFER][128]);
IFDEF(CONFIG_ITRACE, int logbuf_rear);

#ifdef CONFIG_ITRACE
void log_itrace_print() {
  puts("ITRACE buffer:");
  for (int i = (logbuf_rear + 1) % CONFIG_ITRACE_BUFFER; i != logbuf_rear; i = (i + 1) % CONFIG_ITRACE_BUFFER) {
    if (logbuf[i][0] == '\0') continue;
    puts(logbuf[i]);
  }
  puts("Current command:");
  puts(logbuf[logbuf_rear]);
}
#endif