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author | Samba Release Account <samba-bugs@samba.org> | 1996-05-04 07:50:46 +0000 |
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committer | Samba Release Account <samba-bugs@samba.org> | 1996-05-04 07:50:46 +0000 |
commit | 0db2ec0e94c6849202a2aa6e9965bfef0acb4e7a (patch) | |
tree | a07fdef481e206a89917895bd3dbe2eda0f25ee3 /source3/include/byteorder.h | |
parent | ce9f59147274357ef0ab7ae968564fb804430cdc (diff) | |
parent | 0e8fd3398771da2f016d72830179507f3edda51b (diff) | |
download | samba-0db2ec0e94c6849202a2aa6e9965bfef0acb4e7a.tar.gz samba-0db2ec0e94c6849202a2aa6e9965bfef0acb4e7a.tar.bz2 samba-0db2ec0e94c6849202a2aa6e9965bfef0acb4e7a.zip |
This commit was generated by cvs2svn to compensate for changes in r4,
which included commits to RCS files with non-trunk default branches.
(This used to be commit c8a46aca039f16b00bcd177ac2bb9962fdfff529)
Diffstat (limited to 'source3/include/byteorder.h')
-rw-r--r-- | source3/include/byteorder.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/source3/include/byteorder.h b/source3/include/byteorder.h new file mode 100644 index 0000000000..899cd6c499 --- /dev/null +++ b/source3/include/byteorder.h @@ -0,0 +1,80 @@ +/* + Unix SMB/Netbios implementation. + Version 1.9. + SMB Byte handling + Copyright (C) Andrew Tridgell 1992-1995 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +/* + This file implements macros for machine independent short and + int manipulation +*/ + +#undef CAREFUL_ALIGNMENT + +/* we know that the 386 can handle misalignment and has the "right" + byteorder */ +#ifdef __i386__ +#define CAREFUL_ALIGNMENT 0 +#endif + +#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) ((int16)SVAL(buf,pos)) +#define IVALS(buf,pos) ((int32)IVAL(buf,pos)) +#define SSVAL(buf,pos,val) SSVALX((buf),(pos),((uint16)(val))) +#define SIVAL(buf,pos,val) SIVALX((buf),(pos),((uint32)(val))) +#define SSVALS(buf,pos,val) SSVALX((buf),(pos),((int16)(val))) +#define SIVALS(buf,pos,val) SIVALX((buf),(pos),((int32)(val))) +#else +/* this handles things for architectures like the 386 that can handle + alignment errors */ +/* + WARNING: This section is dependent on the length of int16 and int32 + being correct +*/ +#define SVAL(buf,pos) (*(uint16 *)((char *)(buf) + (pos))) +#define IVAL(buf,pos) (*(uint32 *)((char *)(buf) + (pos))) +#define SVALS(buf,pos) (*(int16 *)((char *)(buf) + (pos))) +#define IVALS(buf,pos) (*(int32 *)((char *)(buf) + (pos))) +#define SSVAL(buf,pos,val) SVAL(buf,pos)=((uint16)(val)) +#define SIVAL(buf,pos,val) IVAL(buf,pos)=((uint32)(val)) +#define SSVALS(buf,pos,val) SVALS(buf,pos)=((int16)(val)) +#define SIVALS(buf,pos,val) IVALS(buf,pos)=((int32)(val)) +#endif + + +/* 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)) |