#ifndef _OS_OSBYTEORDERI386_H
#define _OS_OSBYTEORDERI386_H
#include <stdint.h>
#if !defined(OS_INLINE)
# define OS_INLINE static inline
#endif
OS_INLINE
uint16_t
_OSSwapInt16(
uint16_t data
)
{
__asm__ ("xchgb %b0, %h0" : "+q" (data));
return data;
}
OS_INLINE
uint32_t
_OSSwapInt32(
uint32_t data
)
{
__asm__ ("bswap %0" : "+r" (data));
return data;
}
OS_INLINE
uint64_t
_OSSwapInt64(
uint64_t data
)
{
union {
uint64_t ull;
uint32_t ul[2];
} u;
u.ul[0] = data >> 32;
u.ul[1] = data & 0xffffffff;
u.ul[0] = _OSSwapInt32(u.ul[0]);
u.ul[1] = _OSSwapInt32(u.ul[1]);
return u.ull;
}
OS_INLINE
uint16_t
OSReadSwapInt16(
const volatile void * base,
uintptr_t offset
)
{
uint16_t result;
result = *(volatile uint16_t *)((uintptr_t)base + offset);
return _OSSwapInt16(result);
}
OS_INLINE
uint32_t
OSReadSwapInt32(
const volatile void * base,
uintptr_t offset
)
{
uint32_t result;
result = *(volatile uint32_t *)((uintptr_t)base + offset);
return _OSSwapInt32(result);
}
OS_INLINE
uint64_t
OSReadSwapInt64(
const volatile void * base,
uintptr_t offset
)
{
const volatile uint32_t * inp;
union ullc {
uint64_t ull;
uint32_t ul[2];
} outv;
inp = (const volatile uint32_t *)((uintptr_t)base + offset);
outv.ul[0] = inp[1];
outv.ul[1] = inp[0];
outv.ul[0] = _OSSwapInt32(outv.ul[0]);
outv.ul[1] = _OSSwapInt32(outv.ul[1]);
return outv.ull;
}
OS_INLINE
void
OSWriteSwapInt16(
volatile void * base,
uintptr_t offset,
uint16_t data
)
{
*(volatile uint16_t *)((uintptr_t)base + offset) = _OSSwapInt16(data);
}
OS_INLINE
void
OSWriteSwapInt32(
volatile void * base,
uintptr_t offset,
uint32_t data
)
{
*(volatile uint32_t *)((uintptr_t)base + offset) = _OSSwapInt32(data);
}
OS_INLINE
void
OSWriteSwapInt64(
volatile void * base,
uintptr_t offset,
uint64_t data
)
{
*(volatile uint64_t *)((uintptr_t)base + offset) = _OSSwapInt64(data);
}
#endif