xan/hexagram
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add src/util.h for byte swapping stuff

Browse source
This commit is contained in:
XANTRONIX Development 2018-12-17 01:17:54 -06:00
parent 2735d012aa
commit bc62f8b3c9
2 changed files with 45 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
src/Makefile
View file

@ -8,6 +8,7 @@ CFLAGS += -fPIC -I$(INCLUDE_PATH)
LDFLAGS =
HEADERS = pcapng.h
HEADERS_LOCAL = util.h
OBJS = pcapng.o
@ -42,7 +43,7 @@ $(SONAME): $(SONAME_FULL)
$(SONAME_SHORT): $(SONAME_FULL)
$(LN) -s $< $@
$(OBJS): %.o: %.c $(HEADERS_BUILD)
$(OBJS): %.o: %.c $(HEADERS_BUILD) $(HEADERS_LOCAL)
$(CC) $(CFLAGS) -c $<
install: $(SONAME_FULL) $(STATIC)

43
src/util.h Normal file
View file

@ -0,0 +1,43 @@
#ifndef _UTIL_H
#define _UTIL_H
#include <sys/types.h>
#include "config.h"
#define bswap16(v) (((v & 0xff00) >> 8) | (v & 0x00ff) << 8)
#define bswap32(v) \
(((v & 0xff000000) >> 24) | \
((v & 0x00ff0000) >> 8) | \
((v & 0x0000ff00) << 8) | \
((v & 0x000000ff) << 24))
#define bswap64(v) \
(((v & 0xff00000000000000) >> 56) | \
((v & 0x00ff000000000000) >> 40) | \
((v & 0x0000ff0000000000) >> 16) | \
((v & 0x000000ff00000000) >> 8) | \
((v & 0x00000000ff000000) << 8) | \
((v & 0x0000000000ff0000) << 16) | \
((v & 0x000000000000ff00) << 40) | \
((v & 0x00000000000000ff) << 64))
#ifndef _ENDIAN_H
#ifdef __DO_SWAP_BYTES
#define be16toh(v) ((uint16_t)bswap16((uint16_t)v))
#define be32toh(v) ((uint32_t)bswap32((uint32_t)v))
#define htobe16(v) ((uint16_t)bswap16((uint16_t)v))
#define htobe32(v) ((uint32_t)bswap32((uint32_t)v))
#define htole32(v) ((uint32_t)v)
#define htole64(v) ((uint64_t)v)
#else
#define be16toh(v) ((uint16_t)v)
#define be32toh(v) ((uint32_t)v)
#define htobe16(v) ((uint16_t)v)
#define htobe32(v) ((uint32_t)v)
#define htole32(v) ((uint32_t)bswap32((uint32_t)v))
#define htole64(v) ((uint64_t)bswap64((uint64_t)v))
#endif /* __DO_SWAP_BYTES */
#endif /* !_ENDIAN_H */
#endif /* _UTIL_H */