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debug.h
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debug.h
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#ifndef __DEBUG_H
#define __DEBUG_H
// We have to do a lot of printf debugging, so a few macros to help.
#ifndef NDEBUG
# define trace(str) logmsg("%s:%d: TRACE %s", __FILE__, __LINE__, (str))
# define traceval(fmt, val) \
logmsg("%s:%d: TRACE %s " fmt, __FILE__, __LINE__, #val, (val))
# define traceint(val) \
logmsg("%s:%d: TRACE %s %d", __FILE__, __LINE__, #val, (val))
# define tracestr(val) \
logmsg("%s:%d: TRACE %s \"%s\"", __FILE__, __LINE__, #val, (val))
# define tracestrlen(val, len) \
logmsg("%s:%d: TRACE %s \"%.*s\"", __FILE__, __LINE__, #val, (len), (val))
# define traceptr(val) \
logmsg("%s:%d: TRACE %s %p", __FILE__, __LINE__, #val, (val))
# define tracechr(val) \
logmsg("%s:%d: TRACE %s %hd", __FILE__, __LINE__, #val, (val))
# define tracebuf(ptr, len) do { \
logmsg("%s:%d: TRACE %s (%d bytes):", __FILE__, __LINE__, #ptr, (len)); \
loghex(ptr, len); \
} while (false)
# define traceent(name) do { \
int ra, rs; \
__asm { mov ax, word ptr [bp+2] }; \
__asm { mov ra, ax }; \
__asm { mov ax, word ptr [bp+4] }; \
__asm { mov rs, ax }; \
logmsg("ENTER %s, caller %hx:%hx", (name), rs, ra); \
} while (false)
#else
# define trace(str)
# define traceval(fmt, val)
# define traceint(val)
# define tracestr(val)
# define traceptr(val)
# define tracechr(val)
# define traceent(name)
# define tracebuf(ptr, len)
# define tracestrlen(val, len)
#endif
// Put some useful values in registers so dumps are useful.
#define __debugbreak() do { \
int line = __LINE__; \
char *file = __FILE__; \
__asm { mov si, line }; \
__asm { les di, file }; \
__asm { int 3 }; \
} while (false)
// I cant use conditional breakpoints, this will have to do.
#define __breakafter(n) do { \
static int count; \
if (++count >= (n)) \
__asm { int 3 }; \
} while (false)
// These get replaced on overlay switch, but sometimes handy.
#define __breakpoint(s, o) do { \
unsigned char far *bpint = MK_FP(s, o); \
*bpint = 0xCC; \
} while (false)
int openlog(const char *name);
int closelog(void);
int logmsg(const char *fmt, ...);
int logstr(const char *fmt, ...);
void loghex(const void far *ptr, int buflen);
#endif