#ifndef	_BYTEORDER_H_
#define	_BYTEORDER_H_	1


#define RW_PCVAL(read,inbuf,outbuf,len) \
                if (read) { PCVAL (inbuf,0,outbuf,len) } \
                else      { PSCVAL(inbuf,0,outbuf,len) }

#define RW_PIVAL(read,inbuf,outbuf,len) \
                if (read) { PIVAL (inbuf,0,outbuf,len) } \
                else      { PSIVAL(inbuf,0,outbuf,len) }

#define RW_PSVAL(read,inbuf,outbuf,len) \
                if (read) { PSVAL (inbuf,0,outbuf,len) } \
                else      { PSSVAL(inbuf,0,outbuf,len) }

#define RW_CVAL(read, inbuf, outbuf, offset) \
                if (read) (outbuf) = CVAL (inbuf,offset); \
                else                 SCVAL(inbuf,offset,outbuf);

#define RW_IVAL(read, inbuf, outbuf, offset) \
                if (read) (outbuf)= IVAL (inbuf,offset); \
                else                SIVAL(inbuf,offset,outbuf);

#define RW_SVAL(read, inbuf, outbuf, offset) \
                if (read) (outbuf)= SVAL (inbuf,offset); \
                else                SSVAL(inbuf,offset,outbuf);

#undef CAREFUL_ALIGNMENT


#ifndef CAREFUL_ALIGNMENT
#define CAREFUL_ALIGNMENT 1
#endif

#define CVAL(buf,pos) (((unsigned char *)(buf))[pos])
#define PVAL(buf,pos) ((unsigned)CVAL(buf,pos))
#define SCVAL(buf,pos,val) (CVAL(buf,pos) = (val))


#if CAREFUL_ALIGNMENT

#define SVAL(buf,pos) (PVAL(buf,pos)|PVAL(buf,(pos)+1)<<8)
#define IVAL(buf,pos) (SVAL(buf,pos)|SVAL(buf,(pos)+2)<<16)
#define SSVALX(buf,pos,val) (CVAL(buf,pos)=(val)&0xFF,CVAL(buf,pos+1)=(val)>>8)
#define SIVALX(buf,pos,val) (SSVALX(buf,pos,val&0xFFFF),SSVALX(buf,pos+2,val>>16))
#define SVALS(buf,pos) ((short)SVAL(buf,pos))
#define IVALS(buf,pos) ((int)IVAL(buf,pos))
#define SSVAL(buf,pos,val) SSVALX((buf),(pos),((unsigned short)(val)))
#define SIVAL(buf,pos,val) SIVALX((buf),(pos),((unsigned int)(val)))
#define SSVALS(buf,pos,val) SSVALX((buf),(pos),((short)(val)))
#define SIVALS(buf,pos,val) SIVALX((buf),(pos),((int)(val)))

#else

/* this handles things for architectures like the 386 that can handle
   alignment errors */

/* get single value from an SMB buffer */
#define SVAL(buf,pos) (*(unsigned short *)((char *)(buf) + (pos)))
#define IVAL(buf,pos) (*(unsigned int *)((char *)(buf) + (pos)))
#define SVALS(buf,pos) (*(short *)((char *)(buf) + (pos)))
#define IVALS(buf,pos) (*(int *)((char *)(buf) + (pos)))

/* store single value in an SMB buffer */
#define SSVAL(buf,pos,val) SVAL(buf,pos)=((unsigned short)(val))
#define SIVAL(buf,pos,val) IVAL(buf,pos)=((unsigned int)(val))
#define SSVALS(buf,pos,val) SVALS(buf,pos)=((short)(val))
#define SIVALS(buf,pos,val) IVALS(buf,pos)=((int)(val))

#endif


/* macros for reading / writing arrays */

#define SMBMACRO(macro,buf,pos,val,len,size) \
{ int l; for (l = 0; l < (len); l++) (val)[l] = macro((buf), (pos) + (size)*l); }

#define SSMBMACRO(macro,buf,pos,val,len,size) \
{ int l; for (l = 0; l < (len); l++) macro((buf), (pos) + (size)*l, (val)[l]); }

/* reads multiple data from an SMB buffer */
#define PCVAL(buf,pos,val,len) SMBMACRO(CVAL,buf,pos,val,len,1)
#define PSVAL(buf,pos,val,len) SMBMACRO(SVAL,buf,pos,val,len,2)
#define PIVAL(buf,pos,val,len) SMBMACRO(IVAL,buf,pos,val,len,4)
#define PCVALS(buf,pos,val,len) SMBMACRO(CVALS,buf,pos,val,len,1)
#define PSVALS(buf,pos,val,len) SMBMACRO(SVALS,buf,pos,val,len,2)
#define PIVALS(buf,pos,val,len) SMBMACRO(IVALS,buf,pos,val,len,4)

/* stores multiple data in an SMB buffer */
#define PSCVAL(buf,pos,val,len) SSMBMACRO(SCVAL,buf,pos,val,len,1)
#define PSSVAL(buf,pos,val,len) SSMBMACRO(SSVAL,buf,pos,val,len,2)
#define PSIVAL(buf,pos,val,len) SSMBMACRO(SIVAL,buf,pos,val,len,4)
#define PSCVALS(buf,pos,val,len) SSMBMACRO(SCVALS,buf,pos,val,len,1)
#define PSSVALS(buf,pos,val,len) SSMBMACRO(SSVALS,buf,pos,val,len,2)
#define PSIVALS(buf,pos,val,len) SSMBMACRO(SIVALS,buf,pos,val,len,4)


/* now the reverse routines - these are used in nmb packets (mostly) */
#define SREV(x) ((((x)&0xFF)<<8) | (((x)>>8)&0xFF))
#define IREV(x) ((SREV(x)<<16) | (SREV((x)>>16)))

#define RSVAL(buf,pos) SREV(SVAL(buf,pos))
#define RIVAL(buf,pos) IREV(IVAL(buf,pos))
#define RSSVAL(buf,pos,val) SSVAL(buf,pos,SREV(val))
#define RSIVAL(buf,pos,val) SIVAL(buf,pos,IREV(val))



#endif	/* _BYTEORDER_H_	*/