-/***************************************************************************\r
- * Copyright (C) 2005 by Dominic Rath *\r
- * Dominic.Rath@gmx.de *\r
- * *\r
- * This program is free software; you can redistribute it and/or modify *\r
- * it under the terms of the GNU General Public License as published by *\r
- * the Free Software Foundation; either version 2 of the License, or *\r
- * (at your option) any later version. *\r
- * *\r
- * This program is distributed in the hope that it will be useful, *\r
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *\r
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *\r
- * GNU General Public License for more details. *\r
- * *\r
- * You should have received a copy of the GNU General Public License *\r
- * along with this program; if not, write to the *\r
- * Free Software Foundation, Inc., *\r
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *\r
- ***************************************************************************/\r
-#ifdef HAVE_CONFIG_H\r
-#include "config.h"\r
-#endif\r
-\r
-#include "log.h"\r
-#include "configuration.h"\r
-\r
-#include <stdio.h>\r
-#include <stdlib.h>\r
-#include <string.h>\r
-#include <stdarg.h>\r
-#include <time.h>\r
-\r
-int debug_level = -1;\r
-\r
-static FILE* log_output;\r
-\r
-static void *privData;\r
-static logCallback callback;\r
-static time_t start;\r
-\r
-void log_setCallback(logCallback c, void *p)\r
-{\r
- callback = c;\r
- privData = p;\r
-}\r
-\r
-static char *log_strings[5] = \r
-{\r
- "User: ",\r
- "Error: ",\r
- "Warning:",\r
- "Info: ",\r
- "Debug: "\r
-};\r
-\r
-void log_printf(enum log_levels level, const char *file, int line, const char *function, const char *format, ...)\r
-{\r
- static int count = 0;\r
- count++;\r
- va_list args;\r
- char buffer[512];\r
-\r
- if (level > debug_level)\r
- return;\r
-\r
- va_start(args, format);\r
- vsnprintf(buffer, 512, format, args);\r
-\r
- char *f = strrchr(file, '/');\r
- if (f != NULL)\r
- file = f + 1;\r
-\r
- if (debug_level >= LOG_DEBUG)\r
- {\r
- /* print with count and time information */\r
- time_t t=time(NULL)-start;\r
- fprintf(log_output, "%s %d %ld %s:%d %s(): %s\n", log_strings[level+1], count, t, file, line, function, buffer);\r
- }\r
- else\r
- {\r
- /* do not print count and time */\r
- fprintf(log_output, "%s %s:%d %s(): %s\n", log_strings[level+1], file, line, function, buffer);\r
- }\r
-\r
- fflush(log_output);\r
- \r
- va_end(args);\r
-\r
- /* Never forward LOG_DEBUG, too verbose and they can be found in the log if need be */\r
- if (callback && (level <= LOG_INFO))\r
- {\r
- va_start(args, format);\r
- callback(privData, file, line, function, format, args);\r
- va_end(args);\r
- }\r
-}\r
-\r
-/* change the current debug level on the fly\r
- * 0: only ERRORS\r
- * 1: + WARNINGS\r
- * 2: + INFORMATIONAL MSGS\r
- * 3: + DEBUG MSGS\r
- */\r
-int handle_debug_level_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)\r
-{\r
- if (argc == 0)\r
- command_print(cmd_ctx, "debug_level: %i", debug_level);\r
-\r
- if (argc > 0)\r
- debug_level = strtoul(args[0], NULL, 0);\r
-\r
- if (debug_level < 0)\r
- debug_level = 0;\r
-\r
- if (debug_level > 3)\r
- debug_level = 3;\r
-\r
- return ERROR_OK;\r
-}\r
-\r
-int handle_log_output_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)\r
-{\r
- if (argc == 1)\r
- {\r
- FILE* file = fopen(args[0], "w");\r
- \r
- if (file)\r
- {\r
- log_output = file;\r
- }\r
- }\r
-\r
- return ERROR_OK;\r
-}\r
-\r
-int log_register_commands(struct command_context_s *cmd_ctx)\r
-{\r
- start = time(NULL);\r
- register_command(cmd_ctx, NULL, "log_output", handle_log_output_command,\r
- COMMAND_ANY, "redirect logging to <file> (default: stderr)");\r
- register_command(cmd_ctx, NULL, "debug_level", handle_debug_level_command,\r
- COMMAND_ANY, "adjust debug level <0-3>");\r
-\r
- return ERROR_OK;\r
-}\r
-\r
-int log_init(struct command_context_s *cmd_ctx)\r
-{\r
- /* set defaults for daemon configuration, if not set by cmdline or cfgfile */\r
- if (debug_level == -1)\r
- debug_level = LOG_INFO;\r
- \r
- if (log_output == NULL)\r
- {\r
- log_output = stderr;\r
- }\r
- \r
- return ERROR_OK;\r
-}\r
- \r
-int set_log_output(struct command_context_s *cmd_ctx, FILE *output)\r
-{\r
- log_output = output;\r
- return ERROR_OK;\r
-}\r
-\r
-/* return allocated string w/printf() result */\r
-char *allocPrintf(const char *fmt, va_list ap)\r
-{\r
- char *string = NULL;\r
- \r
- /* start by 0 to exercise all the code paths. Need minimum 2 bytes to\r
- * fit 1 char and 0 terminator. */\r
- int size = 0;\r
- int first = 1;\r
- for (;;)\r
- {\r
- if ((string == NULL) || (!first))\r
- {\r
- size = size * 2 + 2;\r
- char *t = string;\r
- string = realloc(string, size);\r
- if (string == NULL)\r
- {\r
- if (t != NULL)\r
- free(t);\r
- return NULL;\r
- }\r
- }\r
- \r
- int ret;\r
- ret = vsnprintf(string, size, fmt, ap);\r
- /* NB! The result of the vsnprintf() might be an *EMPTY* string! */\r
- if ((ret >= 0) && ((ret + 1) < size))\r
- {\r
- return string;\r
- }\r
- /* there was just enough or not enough space, allocate more. */\r
- first = 0;\r
- }\r
-}\r
+/***************************************************************************
+ * Copyright (C) 2005 by Dominic Rath *
+ * Dominic.Rath@gmx.de *
+ * *
+ * Copyright (C) 2007-2010 Øyvind Harboe *
+ * oyvind.harboe@zylin.com *
+ * *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * 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, write to the *
+ * Free Software Foundation, Inc., *
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ ***************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "time_support.h"
+/* @todo the inclusion of server.h here is a layering violation */
+#include <server/server.h>
+
+#include <stdarg.h>
+
+#ifdef _DEBUG_FREE_SPACE_
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#else
+#error "malloc.h is required to use --enable-malloc-logging"
+#endif
+#endif
+
+int debug_level = -1;
+
+static FILE *log_output;
+static struct log_callback *log_callbacks;
+
+static long long last_time;
+static long long current_time;
+
+static long long start;
+
+static char *log_strings[5] = {
+ "User : ",
+ "Error: ",
+ "Warn : ", /* want a space after each colon, all same width, colons aligned */
+ "Info : ",
+ "Debug: "
+};
+
+static int count;
+
+static struct store_log_forward *log_head;
+static int log_forward_count;
+
+struct store_log_forward {
+ struct store_log_forward *next;
+ const char *file;
+ int line;
+ const char *function;
+ const char *string;
+};
+
+/* either forward the log to the listeners or store it for possible forwarding later */
+static void log_forward(const char *file, unsigned line, const char *function, const char *string)
+{
+ if (log_forward_count == 0) {
+ struct log_callback *cb, *next;
+ cb = log_callbacks;
+ /* DANGER!!!! the log callback can remove itself!!!! */
+ while (cb) {
+ next = cb->next;
+ cb->fn(cb->priv, file, line, function, string);
+ cb = next;
+ }
+ } else {
+ struct store_log_forward *log = malloc(sizeof(struct store_log_forward));
+ log->file = strdup(file);
+ log->line = line;
+ log->function = strdup(function);
+ log->string = strdup(string);
+ log->next = NULL;
+ if (log_head == NULL)
+ log_head = log;
+ else {
+ /* append to tail */
+ struct store_log_forward *t;
+ t = log_head;
+ while (t->next != NULL)
+ t = t->next;
+ t->next = log;
+ }
+ }
+}
+
+/* The log_puts() serves to somewhat different goals:
+ *
+ * - logging
+ * - feeding low-level info to the user in GDB or Telnet
+ *
+ * The latter dictates that strings without newline are not logged, lest there
+ * will be *MANY log lines when sending one char at the time(e.g.
+ * target_request.c).
+ *
+ */
+static void log_puts(enum log_levels level,
+ const char *file,
+ int line,
+ const char *function,
+ const char *string)
+{
+ char *f;
+ if (level == LOG_LVL_OUTPUT) {
+ /* do not prepend any headers, just print out what we were given and return */
+ fputs(string, log_output);
+ fflush(log_output);
+ return;
+ }
+
+ f = strrchr(file, '/');
+ if (f != NULL)
+ file = f + 1;
+
+ if (strlen(string) > 0) {
+ if (debug_level >= LOG_LVL_DEBUG) {
+ /* print with count and time information */
+ int t = (int)(timeval_ms()-start);
+#ifdef _DEBUG_FREE_SPACE_
+ struct mallinfo info;
+ info = mallinfo();
+#endif
+ fprintf(log_output, "%s%d %d %s:%d %s()"
+#ifdef _DEBUG_FREE_SPACE_
+ " %d"
+#endif
+ ": %s", log_strings[level + 1], count, t, file, line, function,
+#ifdef _DEBUG_FREE_SPACE_
+ info.fordblks,
+#endif
+ string);
+ } else {
+ /* if we are using gdb through pipes then we do not want any output
+ * to the pipe otherwise we get repeated strings */
+ fprintf(log_output, "%s%s",
+ (level > LOG_LVL_USER) ? log_strings[level + 1] : "", string);
+ }
+ } else {
+ /* Empty strings are sent to log callbacks to keep e.g. gdbserver alive, here we do
+ *nothing. */
+ }
+
+ fflush(log_output);
+
+ /* Never forward LOG_LVL_DEBUG, too verbose and they can be found in the log if need be */
+ if (level <= LOG_LVL_INFO)
+ log_forward(file, line, function, string);
+}
+
+void log_printf(enum log_levels level,
+ const char *file,
+ unsigned line,
+ const char *function,
+ const char *format,
+ ...)
+{
+ char *string;
+ va_list ap;
+
+ count++;
+ if (level > debug_level)
+ return;
+
+ va_start(ap, format);
+
+ string = alloc_vprintf(format, ap);
+ if (string != NULL) {
+ log_puts(level, file, line, function, string);
+ free(string);
+ }
+
+ va_end(ap);
+}
+
+void log_printf_lf(enum log_levels level,
+ const char *file,
+ unsigned line,
+ const char *function,
+ const char *format,
+ ...)
+{
+ char *string;
+ va_list ap;
+
+ count++;
+ if (level > debug_level)
+ return;
+
+ va_start(ap, format);
+
+ string = alloc_vprintf(format, ap);
+ if (string != NULL) {
+ strcat(string, "\n"); /* alloc_vprintf guaranteed the buffer to be at least one
+ *char longer */
+ log_puts(level, file, line, function, string);
+ free(string);
+ }
+
+ va_end(ap);
+}
+
+COMMAND_HANDLER(handle_debug_level_command)
+{
+ if (CMD_ARGC == 1) {
+ int new_level;
+ COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], new_level);
+ if ((new_level > LOG_LVL_DEBUG) || (new_level < LOG_LVL_SILENT)) {
+ LOG_ERROR("level must be between %d and %d", LOG_LVL_SILENT, LOG_LVL_DEBUG);
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+ debug_level = new_level;
+ } else if (CMD_ARGC > 1)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ command_print(CMD_CTX, "debug_level: %i", debug_level);
+
+ return ERROR_OK;
+}
+
+COMMAND_HANDLER(handle_log_output_command)
+{
+ if (CMD_ARGC == 1) {
+ FILE *file = fopen(CMD_ARGV[0], "w");
+
+ if (file)
+ log_output = file;
+ }
+
+ return ERROR_OK;
+}
+
+static struct command_registration log_command_handlers[] = {
+ {
+ .name = "log_output",
+ .handler = handle_log_output_command,
+ .mode = COMMAND_ANY,
+ .help = "redirect logging to a file (default: stderr)",
+ .usage = "file_name",
+ },
+ {
+ .name = "debug_level",
+ .handler = handle_debug_level_command,
+ .mode = COMMAND_ANY,
+ .help = "Sets the verbosity level of debugging output. "
+ "0 shows errors only; 1 adds warnings; "
+ "2 (default) adds other info; 3 adds debugging.",
+ .usage = "number",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+int log_register_commands(struct command_context *cmd_ctx)
+{
+ return register_commands(cmd_ctx, NULL, log_command_handlers);
+}
+
+void log_init(void)
+{
+ /* set defaults for daemon configuration,
+ * if not set by cmdline or cfgfile */
+ if (debug_level == -1)
+ debug_level = LOG_LVL_INFO;
+
+ char *debug_env = getenv("OPENOCD_DEBUG_LEVEL");
+ if (NULL != debug_env) {
+ int value;
+ int retval = parse_int(debug_env, &value);
+ if (ERROR_OK == retval &&
+ debug_level >= LOG_LVL_SILENT &&
+ debug_level <= LOG_LVL_DEBUG)
+ debug_level = value;
+ }
+
+ if (log_output == NULL)
+ log_output = stderr;
+
+ start = last_time = timeval_ms();
+}
+
+int set_log_output(struct command_context *cmd_ctx, FILE *output)
+{
+ log_output = output;
+ return ERROR_OK;
+}
+
+/* add/remove log callback handler */
+int log_add_callback(log_callback_fn fn, void *priv)
+{
+ struct log_callback *cb;
+
+ /* prevent the same callback to be registered more than once, just for sure */
+ for (cb = log_callbacks; cb; cb = cb->next) {
+ if (cb->fn == fn && cb->priv == priv)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ /* alloc memory, it is safe just to return in case of an error, no need for the caller to
+ *check this */
+ cb = malloc(sizeof(struct log_callback));
+ if (cb == NULL)
+ return ERROR_BUF_TOO_SMALL;
+
+ /* add item to the beginning of the linked list */
+ cb->fn = fn;
+ cb->priv = priv;
+ cb->next = log_callbacks;
+ log_callbacks = cb;
+
+ return ERROR_OK;
+}
+
+int log_remove_callback(log_callback_fn fn, void *priv)
+{
+ struct log_callback *cb, **p;
+
+ for (p = &log_callbacks; (cb = *p); p = &(*p)->next) {
+ if (cb->fn == fn && cb->priv == priv) {
+ *p = cb->next;
+ free(cb);
+ return ERROR_OK;
+ }
+ }
+
+ /* no such item */
+ return ERROR_COMMAND_SYNTAX_ERROR;
+}
+
+/* return allocated string w/printf() result */
+char *alloc_vprintf(const char *fmt, va_list ap)
+{
+ va_list ap_copy;
+ int len;
+ char *string;
+
+ /* determine the length of the buffer needed */
+ va_copy(ap_copy, ap);
+ len = vsnprintf(NULL, 0, fmt, ap_copy);
+ va_end(ap_copy);
+
+ /* allocate and make room for terminating zero. */
+ /* FIXME: The old version always allocated at least one byte extra and
+ * other code depend on that. They should be probably be fixed, but for
+ * now reserve the extra byte. */
+ string = malloc(len + 2);
+ if (string == NULL)
+ return NULL;
+
+ /* do the real work */
+ vsnprintf(string, len + 1, fmt, ap);
+
+ return string;
+}
+
+char *alloc_printf(const char *format, ...)
+{
+ char *string;
+ va_list ap;
+ va_start(ap, format);
+ string = alloc_vprintf(format, ap);
+ va_end(ap);
+ return string;
+}
+
+/* Code must return to the server loop before 1000ms has returned or invoke
+ * this function.
+ *
+ * The GDB connection will time out if it spends >2000ms and you'll get nasty
+ * error messages from GDB:
+ *
+ * Ignoring packet error, continuing...
+ * Reply contains invalid hex digit 116
+ *
+ * While it is possible use "set remotetimeout" to more than the default 2000ms
+ * in GDB, OpenOCD guarantees that it sends keep-alive packages on the
+ * GDB protocol and it is a bug in OpenOCD not to either return to the server
+ * loop or invoke keep_alive() every 1000ms.
+ *
+ * This function will send a keep alive packet if >500ms has passed since last time
+ * it was invoked.
+ *
+ * Note that this function can be invoked often, so it needs to be relatively
+ * fast when invoked more often than every 500ms.
+ *
+ */
+void keep_alive()
+{
+ current_time = timeval_ms();
+ if (current_time-last_time > 1000) {
+ extern int gdb_actual_connections;
+
+ if (gdb_actual_connections)
+ LOG_WARNING("keep_alive() was not invoked in the "
+ "1000ms timelimit. GDB alive packet not "
+ "sent! (%lld). Workaround: increase "
+ "\"set remotetimeout\" in GDB",
+ current_time-last_time);
+ else
+ LOG_DEBUG("keep_alive() was not invoked in the "
+ "1000ms timelimit (%lld). This may cause "
+ "trouble with GDB connections.",
+ current_time-last_time);
+ }
+ if (current_time-last_time > 500) {
+ /* this will keep the GDB connection alive */
+ LOG_USER_N("%s", "");
+
+ /* DANGER!!!! do not add code to invoke e.g. target event processing,
+ * jim timer processing, etc. it can cause infinite recursion +
+ * jim event callbacks need to happen at a well defined time,
+ * not anywhere keep_alive() is invoked.
+ *
+ * These functions should be invoked at a well defined spot in server.c
+ */
+
+ last_time = current_time;
+ }
+}
+
+/* reset keep alive timer without sending message */
+void kept_alive()
+{
+ current_time = timeval_ms();
+ last_time = current_time;
+}
+
+/* if we sleep for extended periods of time, we must invoke keep_alive() intermittantly */
+void alive_sleep(uint64_t ms)
+{
+ uint64_t napTime = 10;
+ for (uint64_t i = 0; i < ms; i += napTime) {
+ uint64_t sleep_a_bit = ms - i;
+ if (sleep_a_bit > napTime)
+ sleep_a_bit = napTime;
+
+ usleep(sleep_a_bit * 1000);
+ keep_alive();
+ }
+}
+
+void busy_sleep(uint64_t ms)
+{
+ uint64_t then = timeval_ms();
+ while (timeval_ms() - then < ms) {
+ /*
+ * busy wait
+ */
+ }
+}
projects / fw / openocd / blobdiff