arch/windows/debug.c

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#ifndef DBG_KERNELMODE

    #define DBG_USERMODE
#endif // #ifndef DBG_KERNELMODE

#include "debug.h"

#if DBG

#include <stdarg.h>
#include <stdio.h>



unsigned char DbgBuffer[DBG_MAX_BUFFER][DBG_MAX_BUFFERLEN];

int  DbgBufferPos[DBG_MAX_BUFFER];

unsigned long DbgFlags = 0  // | 0x7FFFFFFF
//                       | DBGF_BREAK

//                       | DBGF_ENTER
//                       | DBGF_LEAVE
//                       | DBGF_LEAVE_FAILURE
//                       | DBGF_PARAM
#ifdef DBG_KERNELMODE
//                       | DBGF_IEC
//                       | DBGF_IRQ
                         | DBGF_ASSERTIRQL
//                       | DBGF_PORT
                         | DBGF_THREAD
//                       | DBGF_IRPPATH
//                       | DBGF_IRP
//                       | DBGF_DPC
                         | DBGF_DBGMEMBUF
                         | DBGF_DBGPRINT

#endif // #ifdef DBG_KERNELMODE
//                       | DBGF_PPORT
//                       | DBGF_SUCCESS
//                       | DBGF_ERROR
//                       | DBGF_WARNING
                         | DBGF_ASSERT
                         ;

#ifdef DBG_KERNELMODE

LONG DebugBufferCounter;

LONG DebugBufferUsed[DBG_MAX_BUFFER];

#endif // #ifdef DBG_KERNELMODE


void
DbgOutputIntoBuffer(unsigned long BufferNumber, const char * const Format, ...)
{
    va_list arg_ptr;

    // Get a pointer to the current position in the given DebugBuffer

    char *buffer = &DbgBuffer[BufferNumber][DbgBufferPos[BufferNumber]];

    va_start(arg_ptr, Format);

    // If there is some space left in the DebugBuffer, append the contents

    if ((DBG_MAX_BUFFERLEN - DbgBufferPos[BufferNumber] - 1) > 0) 
    {
        int n;
        
        // Output at most the number of bytes which are left in the DebugBuffer

        n = _vsnprintf(buffer, DBG_MAX_BUFFERLEN - DbgBufferPos[BufferNumber] - 1,
            Format, arg_ptr);

        // Was the buffer too small? If yes, the number of bytes
        // inserted is the size of the remaining buffer, so, set
        // this value

        if (n<0) 
        {
            n = DBG_MAX_BUFFERLEN - DbgBufferPos[BufferNumber] - 1;
        }

        // advance the buffer into the DebugBuffer

        DbgBufferPos[BufferNumber] += n;

        // Make sure the string is null terminated

        DbgBuffer[BufferNumber][DbgBufferPos[BufferNumber]] = 0;
    }
    va_end(arg_ptr);
}

#endif // #if DBG

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