#ifndef UTIL_DEBUG_H

#define UTIL_DEBUG_H

#include <stdio.h>

#include <stdlib.h>

void ish_printk(const char *msg, ...);

void ish_vprintk(const char *msg, va_list args);

#undef printk

#define printk ish_printk

#ifndef DEBUG_all

#define DEBUG_all 0

#ifndef DEBUG_verbose

#define DEBUG_verbose DEBUG_all

#ifndef DEBUG_instr

#define DEBUG_instr DEBUG_all

#ifndef DEBUG_debug

#define DEBUG_debug DEBUG_all

#ifndef DEBUG_strace

#define DEBUG_strace DEBUG_all

#ifndef DEBUG_memory

#define DEBUG_memory DEBUG_all

#if DEBUG_verbose

#define TRACE_verbose TRACE__

#define TRACE_verbose TRACE__NOP

#if DEBUG_instr

#define TRACE_instr TRACE__

#define TRACE_instr TRACE__NOP

#if DEBUG_debug

#define TRACE_debug TRACE__

#define TRACE_debug TRACE__NOP

#if DEBUG_strace

#define TRACE_strace TRACE__

#define TRACE_strace TRACE__NOP

#if DEBUG_memory

#define TRACE_memory TRACE__

#define TRACE_memory TRACE__NOP

#ifdef LOG_OVERRIDE

extern int log_override;

#define TRACE__NOP(msg, ...) if (log_override) { TRACE__(msg, ##__VA_ARGS__); }

#define TRACE__NOP(msg, ...) use(__VA_ARGS__)

#define TRACE__(msg, ...) printk(msg, ##__VA_ARGS__)

#define TRACE_(chan, msg, ...) glue(TRACE_, chan)(msg, ##__VA_ARGS__)

#define TRACE(msg, ...) TRACE_(DEFAULT_CHANNEL, msg, ##__VA_ARGS__)

#ifndef DEFAULT_CHANNEL

#define DEFAULT_CHANNEL verbose

#define TODO(msg, ...) die("TODO: " msg, ##__VA_ARGS__)

#define FIXME(msg, ...) printk("FIXME " msg "\n", ##__VA_ARGS__)

#define ERRNO_DIE(msg) { perror(msg); abort(); }

extern void (*die_handler)(const char *msg);

_Noreturn void die(const char *msg, ...);

#define STRACE(msg, ...) TRACE_(strace, msg, ##__VA_ARGS__)

#if defined(__i386__) || defined(__x86_64__)

#define debugger __asm__("int3")

#include <signal.h>

#define debugger raise(SIGTRAP)