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|
/*
* <endian.h>
*
* Open Hack'Ware BIOS: provides all common endianness conversions functions
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License V2
* as published by the Free Software Foundation
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* This file provides:
* void cpu_to_be16p (uint16_t *outp, uint16_t in);
* void cpu_to_be32p (uint32_t *outp, uint32_t in);
* void cpu_to_be64p (uint64_t *outp, uint64_t in);
* void cpu_to_le16p (uint16_t *outp, uint16_t in);
* void cpu_to_le32p (uint32_t *outp, uint32_t in);
* void cpu_to_le64p (uint64_t *outp, uint64_t in);
* void endian_to_cpu16p (uint16_t *outp, uint16_t in, endian_t endian);
* void endian_to_cpu32p (uint32_t *outp, uint32_t in, endian_t endian);
* void endian_to_cpu64p (uint64_t *outp, uint64_t in, endian_t endian);
* void cpu16_to_endianp (uint16_t *outp, uint16_t in, endian_t endian);
* void cpu32_to_endianp (uint32_t *outp, uint32_t in, endian_t endian);
* void cpu64_to_endianp (uint64_t *outp, uint64_t in, endian_t endian);
*
*/
#if !defined (__OHW_ENDIAN_H__)
#define __OHW_ENDIAN_H__
#include <stdint.h>
typedef enum endian_t endian_t;
enum endian_t {
ENDIAN_1234 = 0,
ENDIAN_4321,
ENDIAN_3412,
ENDIAN_2143,
};
/* Generic endian conversion functions */
static inline void generic_cpu_swap16p (uint16_t *outp, uint16_t in)
{
*outp = ((in & 0xFF00) >> 8) | ((in & 0x00FF) << 8);
}
static inline void generic_cpu_swap32p (uint32_t *outp, uint32_t in)
{
*outp = ((in & 0xFF000000) >> 24) | ((in & 0x00FF0000) >> 8) |
((in & 0x0000FF00) << 8) | ((in & 0x000000FF) << 24);
}
static inline void generic_cpu_swap64p (uint64_t *outp, uint64_t in)
{
*outp = ((in & 0xFF00000000000000ULL) >> 56) |
((in & 0x00FF000000000000ULL) >> 40) |
((in & 0x0000FF0000000000ULL) >> 24) |
((in & 0x000000FF00000000ULL) >> 8) |
((in & 0x00000000FF000000ULL) << 8) |
((in & 0x0000000000FF0000ULL) << 24) |
((in & 0x000000000000FF00ULL) << 40) |
((in & 0x00000000000000FFULL) << 56);
}
static inline void generic_cpu_swap64p_32 (uint64_t *outp, uint64_t in)
{
uint32_t *_outp = (uint32_t *)outp;
generic_cpu_swap32p(_outp, in);
generic_cpu_swap32p(_outp + 1, in >> 32);
}
#if defined (__i386__)
#define __CPU_ENDIAN_4321__
#define __CPU_LENGTH_32__
#elif defined (__x86_64__)
#define __CPU_ENDIAN_4321__
#define __CPU_LENGTH_64__
#elif defined (__powerpc__)
#define __CPU_ENDIAN_1234__
#define __CPU_LENGTH_32__
#define __HAVE_CPU_SWAP16P__
static inline void cpu_swap16p (uint16_t *outp, uint16_t in)
{
__asm__ __volatile__ ("sthbrx %4, 0(%3)");
}
#define __HAVE_CPU_SWAP32P__
static inline void cpu_swap32p (uint32_t *outp, uint32_t in)
{
__asm__ __volatile__ ("stwbrx %4, 0(%3)");
}
#define __HAVE_CPU_SWAP64P__
static inline void cpu_swap64p (uint64_t *outp, uint64_t in)
{
return generic_cpu_swap64p_32(outp, in);
}
#else
#error "unsupported CPU architecture"
#endif
/* Use generic swap function if no cpu specific were provided */
#if !defined (__HAVE_CPU_SWAP16P__)
static inline void cpu_swap16p (uint16_t *outp, uint16_t in)
{
generic_cpu_swap16p(outp, in);
}
#endif
#if !defined (__HAVE_CPU_SWAP32P__)
static inline void cpu_swap32p (uint32_t *outp, uint32_t in)
{
generic_cpu_swap32p(outp, in);
}
#endif
#if !defined (__HAVE_CPU_SWAP64P__)
static inline void cpu_swap64p (uint64_t *outp, uint64_t in)
{
#if defined (__CPU_LENGTH_64__)
generic_cpu_swap64p(outp, in);
#elif defined (__CPU_LENGTH_32__)
generic_cpu_swap64p_32(outp, in);
#else
#error "Don't know how to make 64 bits swapping on this arch"
#endif
}
#endif
static inline void cpu_nswap16p (uint16_t *outp, uint16_t in)
{
*outp = in;
}
static inline void cpu_nswap32p (uint32_t *outp, uint32_t in)
{
*outp = in;
}
static inline void cpu_nswap64p (uint64_t *outp, uint64_t in)
{
*outp = in;
}
static inline void _endian_be16_p (uint16_t *outp, uint16_t in,
endian_t endian)
{
switch (endian) {
case ENDIAN_4321:
case ENDIAN_2143:
cpu_swap16p(outp, in);
break;
case ENDIAN_1234:
case ENDIAN_3412:
cpu_nswap16p(outp, in);
break;
}
}
static inline void _endian_be32_p (uint32_t *outp, uint32_t in,
endian_t endian)
{
switch (endian) {
case ENDIAN_4321:
cpu_swap32p(outp, in);
break;
case ENDIAN_1234:
cpu_nswap32p(outp, in);
break;
case ENDIAN_2143:
/* TODO */
break;
case ENDIAN_3412:
/* TODO */
break;
}
}
static inline void _endian_be64_p (uint64_t *outp, uint64_t in,
endian_t endian)
{
switch (endian) {
case ENDIAN_4321:
cpu_swap64p(outp, in);
break;
case ENDIAN_1234:
cpu_nswap64p(outp, in);
break;
case ENDIAN_2143:
/* TODO */
break;
case ENDIAN_3412:
/* TODO */
break;
}
}
static inline void _endian_le16_p (uint16_t *outp, uint16_t in,
endian_t endian)
{
switch (endian) {
case ENDIAN_4321:
case ENDIAN_2143:
cpu_nswap16p(outp, in);
break;
case ENDIAN_1234:
case ENDIAN_3412:
cpu_swap16p(outp, in);
break;
}
}
static inline void _endian_le32_p (uint32_t *outp, uint32_t in,
endian_t endian)
{
switch (endian) {
case ENDIAN_4321:
cpu_nswap32p(outp, in);
break;
case ENDIAN_1234:
cpu_swap32p(outp, in);
break;
case ENDIAN_2143:
/* TODO */
break;
case ENDIAN_3412:
/* TODO */
break;
}
}
static inline void _endian_le64_p (uint64_t *outp, uint64_t in,
endian_t endian)
{
switch (endian) {
case ENDIAN_4321:
cpu_nswap64p(outp, in);
break;
case ENDIAN_1234:
cpu_swap64p(outp, in);
break;
case ENDIAN_2143:
/* TODO */
break;
case ENDIAN_3412:
/* TODO */
break;
}
}
static inline void endian_to_be16p (uint16_t *outp, uint16_t in,
endian_t endian)
{
_endian_be16_p(outp, in, endian);
}
static inline void endian_to_be32p (uint32_t *outp, uint32_t in,
endian_t endian)
{
_endian_be32_p(outp, in, endian);
}
static inline void endian_to_be64p (uint64_t *outp, uint64_t in,
endian_t endian)
{
_endian_be64_p(outp, in, endian);
}
static inline void endian_to_le16p (uint16_t *outp, uint16_t in,
endian_t endian)
{
_endian_le16_p(outp, in, endian);
}
static inline void endian_to_le32p (uint32_t *outp, uint32_t in,
endian_t endian)
{
_endian_le32_p(outp, in, endian);
}
static inline void endian_to_le64p (uint64_t *outp, uint64_t in,
endian_t endian)
{
_endian_le64_p(outp, in, endian);
}
static inline void be16_to_endianp (uint16_t *outp, uint16_t in,
endian_t endian)
{
_endian_be16_p(outp, in, endian);
}
static inline void be32_to_endianp (uint32_t *outp, uint32_t in,
endian_t endian)
{
_endian_be32_p(outp, in, endian);
}
static inline void be64_to_endianp (uint64_t *outp, uint64_t in,
endian_t endian)
{
_endian_be64_p(outp, in, endian);
}
static inline void le16_to_endianp (uint16_t *outp, uint16_t in,
endian_t endian)
{
_endian_le16_p(outp, in, endian);
}
static inline void le32_to_endianp (uint32_t *outp, uint32_t in,
endian_t endian)
{
_endian_le32_p(outp, in, endian);
}
static inline void le64_to_endianp (uint64_t *outp, uint64_t in,
endian_t endian)
{
_endian_le64_p(outp, in, endian);
}
#if defined (__CPU_ENDIAN_4321__)
static inline void cpu_to_be16p (uint16_t *outp, uint16_t in)
{
cpu_swap16p(outp, in);
}
static inline void cpu_to_be32p (uint32_t *outp, uint32_t in)
{
cpu_swap32p(outp, in);
}
static inline void cpu_to_be64p (uint64_t *outp, uint64_t in)
{
cpu_swap64p(outp, in);
}
static inline void cpu_to_le16p (uint16_t *outp, uint16_t in)
{
cpu_nswap16p(outp, in);
}
static inline void cpu_to_le32p (uint32_t *outp, uint32_t in)
{
cpu_nswap32p(outp, in);
}
static inline void cpu_to_le64p (uint64_t *outp, uint64_t in)
{
cpu_nswap64p(outp, in);
}
static inline void be16_to_cpup (uint16_t *outp, uint16_t in)
{
cpu_swap16p(outp, in);
}
static inline void be32_to_cpup (uint32_t *outp, uint32_t in)
{
cpu_swap32p(outp, in);
}
static inline void be64_to_cpup (uint64_t *outp, uint64_t in)
{
cpu_swap64p(outp, in);
}
static inline void le16_to_cpup (uint16_t *outp, uint16_t in)
{
cpu_nswap16p(outp, in);
}
static inline void le32_to_cpup (uint32_t *outp, uint32_t in)
{
cpu_nswap32p(outp, in);
}
static inline void le64_to_cpup (uint64_t *outp, uint64_t in)
{
cpu_nswap64p(outp, in);
}
static inline void endian_to_cpu16p (uint16_t *outp, uint16_t in,
endian_t endian)
{
endian_to_le16p(outp, in, endian);
}
static inline void endian_to_cpu32p (uint32_t *outp, uint32_t in,
endian_t endian)
{
endian_to_le32p(outp, in, endian);
}
static inline void endian_to_cpu64p (uint64_t *outp, uint64_t in,
endian_t endian)
{
endian_to_le64p(outp, in, endian);
}
static inline void cpu16_to_endianp (uint16_t *outp, uint16_t in,
endian_t endian)
{
le16_to_endianp(outp, in, endian);
}
static inline void cpu32_to_endianp (uint32_t *outp, uint32_t in,
endian_t endian)
{
le32_to_endianp(outp, in, endian);
}
static inline void cpu64_to_endianp (uint64_t *outp, uint64_t in,
endian_t endian)
{
le64_to_endianp(outp, in, endian);
}
#elif defined (__CPU_ENDIAN_1234__)
static inline void cpu_to_be16p (uint16_t *outp, uint16_t in)
{
cpu_nswap16p(outp, in);
}
static inline void cpu_to_be32p (uint32_t *outp, uint32_t in)
{
cpu_nswap32p(outp, in);
}
static inline void cpu_to_be64p (uint64_t *outp, uint64_t in)
{
cpu_nswap64p(outp, in);
}
static inline void cpu_to_le16p (uint16_t *outp, uint16_t in)
{
cpu_swap16p(outp, in);
}
static inline void cpu_to_le32p (uint32_t *outp, uint32_t in)
{
cpu_swap32p(outp, in);
}
static inline void cpu_to_le64p (uint64_t *outp, uint64_t in)
{
cpu_swap64p(outp, in);
}
static inline void endian_to_cpu16p (uint16_t *outp, uint16_t in,
endian_t endian)
{
endian_to_be16p(outp, in, endian);
}
static inline void endian_to_cpu32p (uint32_t *outp, uint32_t in,
endian_t endian)
{
endian_to_be32p(outp, in, endian);
}
static inline void endian_to_cpu64p (uint64_t *outp, uint64_t in,
endian_t endian)
{
endian_to_be64p(outp, in, endian);
}
static inline void cpu16_to_endianp (uint16_t *outp, uint16_t in,
endian_t endian)
{
be16_to_endianp(outp, in, endian);
}
static inline void cpu32_to_endianp (uint32_t *outp, uint32_t in,
endian_t endian)
{
be32_to_endianp(outp, in, endian);
}
static inline void cpu64_to_endianp (uint64_t *outp, uint64_t in,
endian_t endian)
{
be64_to_endianp(outp, in, endian);
}
#else /* 2143 / 3412 */
/* TODO */
#error "TODO"
#endif
#endif /* !defined (__OHW_ENDIAN_H__) */
|
