diff options
Diffstat (limited to 'include/common/debug.h')
| -rw-r--r-- | include/common/debug.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/include/common/debug.h b/include/common/debug.h new file mode 100644 index 0000000..af47999 --- /dev/null +++ b/include/common/debug.h @@ -0,0 +1,119 @@ +/* + * Copyright (c) 2013-2020, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef DEBUG_H +#define DEBUG_H + +#include <lib/utils_def.h> + +/* + * The log output macros print output to the console. These macros produce + * compiled log output only if the LOG_LEVEL defined in the makefile (or the + * make command line) is greater or equal than the level required for that + * type of log output. + * + * The format expected is the same as for printf(). For example: + * INFO("Info %s.\n", "message") -> INFO: Info message. + * WARN("Warning %s.\n", "message") -> WARNING: Warning message. + */ + +#define LOG_LEVEL_NONE U(0) +#define LOG_LEVEL_ERROR U(10) +#define LOG_LEVEL_NOTICE U(20) +#define LOG_LEVEL_WARNING U(30) +#define LOG_LEVEL_INFO U(40) +#define LOG_LEVEL_VERBOSE U(50) + +#ifndef __ASSEMBLER__ + +#include <cdefs.h> +#include <stdarg.h> +#include <stdbool.h> +#include <stdio.h> + +#include <drivers/console.h> + +/* + * Define Log Markers corresponding to each log level which will + * be embedded in the format string and is expected by tf_log() to determine + * the log level. + */ +#define LOG_MARKER_ERROR "\xa" /* 10 */ +#define LOG_MARKER_NOTICE "\x14" /* 20 */ +#define LOG_MARKER_WARNING "\x1e" /* 30 */ +#define LOG_MARKER_INFO "\x28" /* 40 */ +#define LOG_MARKER_VERBOSE "\x32" /* 50 */ + +/* + * If the log output is too low then this macro is used in place of tf_log() + * below. The intent is to get the compiler to evaluate the function call for + * type checking and format specifier correctness but let it optimize it out. + */ +#define no_tf_log(fmt, ...) \ + do { \ + if (false) { \ + tf_log(fmt, ##__VA_ARGS__); \ + } \ + } while (false) + +#if LOG_LEVEL >= LOG_LEVEL_ERROR +# define ERROR(...) tf_log(LOG_MARKER_ERROR __VA_ARGS__) +# define ERROR_NL() tf_log_newline(LOG_MARKER_ERROR) +#else +# define ERROR(...) no_tf_log(LOG_MARKER_ERROR __VA_ARGS__) +# define ERROR_NL() +#endif + +#if LOG_LEVEL >= LOG_LEVEL_NOTICE +# define NOTICE(...) tf_log(LOG_MARKER_NOTICE __VA_ARGS__) +#else +# define NOTICE(...) no_tf_log(LOG_MARKER_NOTICE __VA_ARGS__) +#endif + +#if LOG_LEVEL >= LOG_LEVEL_WARNING +# define WARN(...) tf_log(LOG_MARKER_WARNING __VA_ARGS__) +#else +# define WARN(...) no_tf_log(LOG_MARKER_WARNING __VA_ARGS__) +#endif + +#if LOG_LEVEL >= LOG_LEVEL_INFO +# define INFO(...) tf_log(LOG_MARKER_INFO __VA_ARGS__) +#else +# define INFO(...) no_tf_log(LOG_MARKER_INFO __VA_ARGS__) +#endif + +#if LOG_LEVEL >= LOG_LEVEL_VERBOSE +# define VERBOSE(...) tf_log(LOG_MARKER_VERBOSE __VA_ARGS__) +#else +# define VERBOSE(...) no_tf_log(LOG_MARKER_VERBOSE __VA_ARGS__) +#endif + +const char *get_el_str(unsigned int el); + +#if ENABLE_BACKTRACE +void backtrace(const char *cookie); +#else +#define backtrace(x) +#endif + +void __dead2 do_panic(void); + +#define panic() \ + do { \ + backtrace(__func__); \ + console_flush(); \ + do_panic(); \ + } while (false) + +/* Function called when stack protection check code detects a corrupted stack */ +void __dead2 __stack_chk_fail(void); + +void tf_log(const char *fmt, ...) __printflike(1, 2); +void tf_log_newline(const char log_fmt[2]); +void tf_log_set_max_level(unsigned int log_level); + +#endif /* __ASSEMBLER__ */ +#endif /* DEBUG_H */ |