226 lines
5.0 KiB
C
226 lines
5.0 KiB
C
#ifndef BSWAP_H
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#define BSWAP_H
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#include "config-host.h"
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#include <inttypes.h>
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#ifdef CONFIG_MACHINE_BSWAP_H
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#include <sys/endian.h>
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#include <sys/types.h>
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#include <machine/bswap.h>
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#else
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#ifdef CONFIG_BYTESWAP_H
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#include <byteswap.h>
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#else
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#define bswap_16(x) \
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({ \
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uint16_t __x = (x); \
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((uint16_t)( \
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(((uint16_t)(__x) & (uint16_t)0x00ffU) << 8) | \
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(((uint16_t)(__x) & (uint16_t)0xff00U) >> 8) )); \
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})
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#define bswap_32(x) \
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({ \
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uint32_t __x = (x); \
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((uint32_t)( \
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(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
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(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
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(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
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(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
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})
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#define bswap_64(x) \
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({ \
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uint64_t __x = (x); \
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((uint64_t)( \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000000000ffULL) << 56) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000000000ff00ULL) << 40) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000ff000000ULL) << 8) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0xff00000000000000ULL) >> 56) )); \
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})
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#endif /* !CONFIG_BYTESWAP_H */
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static inline uint16_t bswap16(uint16_t x)
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{
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return bswap_16(x);
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}
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static inline uint32_t bswap32(uint32_t x)
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{
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return bswap_32(x);
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}
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static inline uint64_t bswap64(uint64_t x)
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{
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return bswap_64(x);
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}
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#endif /* ! CONFIG_MACHINE_BSWAP_H */
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static inline void bswap16s(uint16_t *s)
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{
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*s = bswap16(*s);
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}
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static inline void bswap32s(uint32_t *s)
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{
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*s = bswap32(*s);
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}
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static inline void bswap64s(uint64_t *s)
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{
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*s = bswap64(*s);
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}
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#if defined(HOST_WORDS_BIGENDIAN)
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#define be_bswap(v, size) (v)
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#define le_bswap(v, size) bswap ## size(v)
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#define be_bswaps(v, size)
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#define le_bswaps(p, size) *p = bswap ## size(*p);
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#else
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#define le_bswap(v, size) (v)
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#define be_bswap(v, size) bswap ## size(v)
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#define le_bswaps(v, size)
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#define be_bswaps(p, size) *p = bswap ## size(*p);
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#endif
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#define CPU_CONVERT(endian, size, type)\
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static inline type endian ## size ## _to_cpu(type v)\
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{\
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return endian ## _bswap(v, size);\
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}\
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\
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static inline type cpu_to_ ## endian ## size(type v)\
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{\
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return endian ## _bswap(v, size);\
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}\
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\
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static inline void endian ## size ## _to_cpus(type *p)\
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{\
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endian ## _bswaps(p, size)\
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}\
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\
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static inline void cpu_to_ ## endian ## size ## s(type *p)\
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{\
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endian ## _bswaps(p, size)\
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}\
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\
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static inline type endian ## size ## _to_cpup(const type *p)\
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{\
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return endian ## size ## _to_cpu(*p);\
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}\
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\
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static inline void cpu_to_ ## endian ## size ## w(type *p, type v)\
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{\
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*p = cpu_to_ ## endian ## size(v);\
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}
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CPU_CONVERT(be, 16, uint16_t)
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CPU_CONVERT(be, 32, uint32_t)
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CPU_CONVERT(be, 64, uint64_t)
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CPU_CONVERT(le, 16, uint16_t)
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CPU_CONVERT(le, 32, uint32_t)
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CPU_CONVERT(le, 64, uint64_t)
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/* unaligned versions (optimized for frequent unaligned accesses)*/
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#if defined(__i386__) || defined(_ARCH_PPC)
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#define cpu_to_le16wu(p, v) cpu_to_le16w(p, v)
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#define cpu_to_le32wu(p, v) cpu_to_le32w(p, v)
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#define le16_to_cpupu(p) le16_to_cpup(p)
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#define le32_to_cpupu(p) le32_to_cpup(p)
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#define be32_to_cpupu(p) be32_to_cpup(p)
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#define cpu_to_be16wu(p, v) cpu_to_be16w(p, v)
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#define cpu_to_be32wu(p, v) cpu_to_be32w(p, v)
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#else
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static inline void cpu_to_le16wu(uint16_t *p, uint16_t v)
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{
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uint8_t *p1 = (uint8_t *)p;
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p1[0] = v & 0xff;
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p1[1] = v >> 8;
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}
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static inline void cpu_to_le32wu(uint32_t *p, uint32_t v)
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{
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uint8_t *p1 = (uint8_t *)p;
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p1[0] = v & 0xff;
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p1[1] = v >> 8;
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p1[2] = v >> 16;
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p1[3] = v >> 24;
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}
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static inline uint16_t le16_to_cpupu(const uint16_t *p)
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{
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const uint8_t *p1 = (const uint8_t *)p;
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return p1[0] | (p1[1] << 8);
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}
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static inline uint32_t le32_to_cpupu(const uint32_t *p)
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{
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const uint8_t *p1 = (const uint8_t *)p;
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return p1[0] | (p1[1] << 8) | (p1[2] << 16) | (p1[3] << 24);
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}
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static inline uint32_t be32_to_cpupu(const uint32_t *p)
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{
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const uint8_t *p1 = (const uint8_t *)p;
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return p1[3] | (p1[2] << 8) | (p1[1] << 16) | (p1[0] << 24);
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}
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static inline void cpu_to_be16wu(uint16_t *p, uint16_t v)
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{
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uint8_t *p1 = (uint8_t *)p;
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p1[0] = v >> 8;
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p1[1] = v & 0xff;
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}
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static inline void cpu_to_be32wu(uint32_t *p, uint32_t v)
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{
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uint8_t *p1 = (uint8_t *)p;
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p1[0] = v >> 24;
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p1[1] = v >> 16;
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p1[2] = v >> 8;
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p1[3] = v & 0xff;
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}
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#endif
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#ifdef HOST_WORDS_BIGENDIAN
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#define cpu_to_32wu cpu_to_be32wu
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#define leul_to_cpu(v) glue(glue(le,HOST_LONG_BITS),_to_cpu)(v)
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#else
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#define cpu_to_32wu cpu_to_le32wu
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#define leul_to_cpu(v) (v)
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#endif
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#undef le_bswap
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#undef be_bswap
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#undef le_bswaps
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#undef be_bswaps
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/* len must be one of 1, 2, 4 */
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static inline uint32_t qemu_bswap_len(uint32_t value, int len)
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{
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return bswap32(value) >> (32 - 8 * len);
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}
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#endif /* BSWAP_H */
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