minix/kernel/debug.h
Tomas Hruby 98563a4afa Killing Minix by typing Q on serial console
- if debugging on serial console is enabled typing Q kills the system. It is
  handy if the system gets locked up and the timer interrupts still work. Good
  for remote debugging.

- NOT_REACHABLE reintroduced and fixed. It should be used for marking code which
  is not reachable because the previous code _should_ not return. Such places
  are not always obvious
2010-01-14 09:46:16 +00:00

89 lines
2.3 KiB
C

#ifndef DEBUG_H
#define DEBUG_H
/* This header file defines all debugging constants and macros, and declares
* some variables. Certain debugging features redefine standard constants
* and macros. Therefore, this header file should be included after the
* other kernel headers.
*/
#include <ansi.h>
#include <minix/debug.h>
#include "config.h"
/* Enable prints such as
* . send/receive failed due to deadlock or dead source or dead destination
* . trap not allowed
* . bogus message pointer
* . kernel call number not allowed by this process
*
* Of course the call still fails, but nothing is printed if these warnings
* are disabled.
*/
#define DEBUG_ENABLE_IPC_WARNINGS 1
#define DEBUG_STACKTRACE 1
#define DEBUG_TIME_LOCKS 1
/* Runtime sanity checking. */
#define DEBUG_VMASSERT 0
#define DEBUG_SCHED_CHECK 0
#define DEBUG_STACK_CHECK 0
#define DEBUG_TRACE 0
#if DEBUG_TRACE
#define VF_SCHEDULING (1L << 1)
#define VF_PICKPROC (1L << 2)
#define TRACE(code, statement) if(verboseflags & code) { printf("%s:%d: ", __FILE__, __LINE__); statement }
#else
#define TRACE(code, statement)
#endif
#define ENTERED 0xBA5E1514
#define NOTENTERED 0x1415BEE1
#define NOREC_ENTER(varname) \
static int varname = NOTENTERED; \
int mustunlock = 0; \
if(!intr_disabled()) { lock; mustunlock = 1; } \
vmassert(varname == ENTERED || varname == NOTENTERED); \
vmassert(magictest == MAGICTEST); \
vmassert(varname != ENTERED); \
varname = ENTERED;
#define NOREC_RETURN(varname, v) do { \
vmassert(intr_disabled()); \
vmassert(magictest == MAGICTEST); \
vmassert(varname == ENTERED || varname == NOTENTERED); \
varname = NOTENTERED; \
if(mustunlock) { unlock; } \
return v; \
} while(0)
#if DEBUG_VMASSERT
#define vmassert(t) { \
if(!(t)) { minix_panic("vm: assert " #t " failed in " __FILE__, __LINE__); } }
#else
#define vmassert(t) { }
#endif
#define NOT_REACHABLE do { \
kprintf("NOT_REACHABLE at %s:%d\n", __FILE__, __LINE__); \
minix_panic("execution at an unexpected location\n", NO_NUM); \
for(;;); \
} while(0)
#define NOT_IMPLEMENTED do { \
kprintf("NOT_IMPLEMENTED at %s:%d\n", __FILE__, __LINE__); \
minix_panic("NOT_IMPLEMENTED", NO_NUM); \
} while(0)
#ifdef CONFIG_BOOT_VERBOSE
#define BOOT_VERBOSE(x) x
#else
#define BOOT_VERBOSE(x)
#endif
#endif /* DEBUG_H */