mirror of
https://github.com/xemu-project/xemu.git
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714 lines
14 KiB
C
714 lines
14 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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#include "fpu/softfloat.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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#define cpu_to_be64wu(p, v) cpu_to_be64w(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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static inline void cpu_to_be64wu(uint64_t *p, uint64_t v)
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{
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uint8_t *p1 = (uint8_t *)p;
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p1[0] = v >> 56;
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p1[1] = v >> 48;
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p1[2] = v >> 40;
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p1[3] = v >> 32;
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p1[4] = v >> 24;
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p1[5] = v >> 16;
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p1[6] = v >> 8;
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p1[7] = 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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typedef union {
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float32 f;
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uint32_t l;
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} CPU_FloatU;
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typedef union {
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float64 d;
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#if defined(HOST_WORDS_BIGENDIAN)
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struct {
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uint32_t upper;
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uint32_t lower;
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} l;
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#else
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struct {
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uint32_t lower;
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uint32_t upper;
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} l;
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#endif
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uint64_t ll;
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} CPU_DoubleU;
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typedef union {
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floatx80 d;
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struct {
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uint64_t lower;
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uint16_t upper;
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} l;
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} CPU_LDoubleU;
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typedef union {
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float128 q;
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#if defined(HOST_WORDS_BIGENDIAN)
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struct {
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uint32_t upmost;
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uint32_t upper;
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uint32_t lower;
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uint32_t lowest;
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} l;
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struct {
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uint64_t upper;
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uint64_t lower;
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} ll;
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#else
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struct {
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uint32_t lowest;
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uint32_t lower;
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uint32_t upper;
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uint32_t upmost;
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} l;
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struct {
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uint64_t lower;
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uint64_t upper;
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} ll;
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#endif
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} CPU_QuadU;
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/* unaligned/endian-independent pointer access */
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/*
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* the generic syntax is:
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*
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* load: ld{type}{sign}{size}{endian}_p(ptr)
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*
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* store: st{type}{size}{endian}_p(ptr, val)
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*
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* Note there are small differences with the softmmu access API!
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*
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* type is:
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* (empty): integer access
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* f : float access
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*
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* sign is:
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* (empty): for floats or 32 bit size
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* u : unsigned
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* s : signed
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*
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* size is:
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* b: 8 bits
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* w: 16 bits
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* l: 32 bits
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* q: 64 bits
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*
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* endian is:
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* (empty): 8 bit access
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* be : big endian
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* le : little endian
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*/
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static inline int ldub_p(const void *ptr)
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{
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return *(uint8_t *)ptr;
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}
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static inline int ldsb_p(const void *ptr)
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{
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return *(int8_t *)ptr;
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}
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static inline void stb_p(void *ptr, int v)
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{
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*(uint8_t *)ptr = v;
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}
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/* NOTE: on arm, putting 2 in /proc/sys/debug/alignment so that the
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kernel handles unaligned load/stores may give better results, but
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it is a system wide setting : bad */
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#if defined(HOST_WORDS_BIGENDIAN) || defined(WORDS_ALIGNED)
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/* conservative code for little endian unaligned accesses */
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static inline int lduw_le_p(const void *ptr)
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{
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#ifdef _ARCH_PPC
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int val;
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__asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
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return val;
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#else
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const uint8_t *p = ptr;
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return p[0] | (p[1] << 8);
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#endif
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}
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static inline int ldsw_le_p(const void *ptr)
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{
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#ifdef _ARCH_PPC
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int val;
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__asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (ptr));
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return (int16_t)val;
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#else
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const uint8_t *p = ptr;
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return (int16_t)(p[0] | (p[1] << 8));
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#endif
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}
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static inline int ldl_le_p(const void *ptr)
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{
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#ifdef _ARCH_PPC
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int val;
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__asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (ptr));
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return val;
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#else
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const uint8_t *p = ptr;
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return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
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#endif
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}
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static inline uint64_t ldq_le_p(const void *ptr)
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{
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const uint8_t *p = ptr;
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uint32_t v1, v2;
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v1 = ldl_le_p(p);
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v2 = ldl_le_p(p + 4);
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return v1 | ((uint64_t)v2 << 32);
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}
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static inline void stw_le_p(void *ptr, int v)
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{
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#ifdef _ARCH_PPC
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__asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*(uint16_t *)ptr) : "r" (v), "r" (ptr));
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#else
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uint8_t *p = ptr;
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p[0] = v;
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p[1] = v >> 8;
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#endif
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}
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static inline void stl_le_p(void *ptr, int v)
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{
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#ifdef _ARCH_PPC
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__asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*(uint32_t *)ptr) : "r" (v), "r" (ptr));
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#else
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uint8_t *p = ptr;
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p[0] = v;
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p[1] = v >> 8;
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p[2] = v >> 16;
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p[3] = v >> 24;
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#endif
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}
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static inline void stq_le_p(void *ptr, uint64_t v)
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{
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uint8_t *p = ptr;
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stl_le_p(p, (uint32_t)v);
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stl_le_p(p + 4, v >> 32);
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}
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/* float access */
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static inline float32 ldfl_le_p(const void *ptr)
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{
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union {
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float32 f;
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uint32_t i;
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} u;
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u.i = ldl_le_p(ptr);
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return u.f;
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}
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static inline void stfl_le_p(void *ptr, float32 v)
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{
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union {
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float32 f;
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uint32_t i;
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} u;
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u.f = v;
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stl_le_p(ptr, u.i);
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}
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static inline float64 ldfq_le_p(const void *ptr)
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{
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CPU_DoubleU u;
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u.l.lower = ldl_le_p(ptr);
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u.l.upper = ldl_le_p(ptr + 4);
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return u.d;
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}
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static inline void stfq_le_p(void *ptr, float64 v)
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{
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CPU_DoubleU u;
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u.d = v;
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stl_le_p(ptr, u.l.lower);
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stl_le_p(ptr + 4, u.l.upper);
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}
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#else
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static inline int lduw_le_p(const void *ptr)
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{
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return *(uint16_t *)ptr;
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}
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static inline int ldsw_le_p(const void *ptr)
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{
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return *(int16_t *)ptr;
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}
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static inline int ldl_le_p(const void *ptr)
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{
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return *(uint32_t *)ptr;
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}
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static inline uint64_t ldq_le_p(const void *ptr)
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{
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return *(uint64_t *)ptr;
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}
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static inline void stw_le_p(void *ptr, int v)
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{
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*(uint16_t *)ptr = v;
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}
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static inline void stl_le_p(void *ptr, int v)
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{
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*(uint32_t *)ptr = v;
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}
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static inline void stq_le_p(void *ptr, uint64_t v)
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{
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*(uint64_t *)ptr = v;
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}
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/* float access */
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static inline float32 ldfl_le_p(const void *ptr)
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{
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return *(float32 *)ptr;
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}
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static inline float64 ldfq_le_p(const void *ptr)
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{
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return *(float64 *)ptr;
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}
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static inline void stfl_le_p(void *ptr, float32 v)
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{
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*(float32 *)ptr = v;
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}
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static inline void stfq_le_p(void *ptr, float64 v)
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{
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*(float64 *)ptr = v;
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}
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#endif
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#if !defined(HOST_WORDS_BIGENDIAN) || defined(WORDS_ALIGNED)
|
|
|
|
static inline int lduw_be_p(const void *ptr)
|
|
{
|
|
#if defined(__i386__)
|
|
int val;
|
|
asm volatile ("movzwl %1, %0\n"
|
|
"xchgb %b0, %h0\n"
|
|
: "=q" (val)
|
|
: "m" (*(uint16_t *)ptr));
|
|
return val;
|
|
#else
|
|
const uint8_t *b = ptr;
|
|
return ((b[0] << 8) | b[1]);
|
|
#endif
|
|
}
|
|
|
|
static inline int ldsw_be_p(const void *ptr)
|
|
{
|
|
#if defined(__i386__)
|
|
int val;
|
|
asm volatile ("movzwl %1, %0\n"
|
|
"xchgb %b0, %h0\n"
|
|
: "=q" (val)
|
|
: "m" (*(uint16_t *)ptr));
|
|
return (int16_t)val;
|
|
#else
|
|
const uint8_t *b = ptr;
|
|
return (int16_t)((b[0] << 8) | b[1]);
|
|
#endif
|
|
}
|
|
|
|
static inline int ldl_be_p(const void *ptr)
|
|
{
|
|
#if defined(__i386__) || defined(__x86_64__)
|
|
int val;
|
|
asm volatile ("movl %1, %0\n"
|
|
"bswap %0\n"
|
|
: "=r" (val)
|
|
: "m" (*(uint32_t *)ptr));
|
|
return val;
|
|
#else
|
|
const uint8_t *b = ptr;
|
|
return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3];
|
|
#endif
|
|
}
|
|
|
|
static inline uint64_t ldq_be_p(const void *ptr)
|
|
{
|
|
uint32_t a,b;
|
|
a = ldl_be_p(ptr);
|
|
b = ldl_be_p((uint8_t *)ptr + 4);
|
|
return (((uint64_t)a<<32)|b);
|
|
}
|
|
|
|
static inline void stw_be_p(void *ptr, int v)
|
|
{
|
|
#if defined(__i386__)
|
|
asm volatile ("xchgb %b0, %h0\n"
|
|
"movw %w0, %1\n"
|
|
: "=q" (v)
|
|
: "m" (*(uint16_t *)ptr), "0" (v));
|
|
#else
|
|
uint8_t *d = (uint8_t *) ptr;
|
|
d[0] = v >> 8;
|
|
d[1] = v;
|
|
#endif
|
|
}
|
|
|
|
static inline void stl_be_p(void *ptr, int v)
|
|
{
|
|
#if defined(__i386__) || defined(__x86_64__)
|
|
asm volatile ("bswap %0\n"
|
|
"movl %0, %1\n"
|
|
: "=r" (v)
|
|
: "m" (*(uint32_t *)ptr), "0" (v));
|
|
#else
|
|
uint8_t *d = (uint8_t *) ptr;
|
|
d[0] = v >> 24;
|
|
d[1] = v >> 16;
|
|
d[2] = v >> 8;
|
|
d[3] = v;
|
|
#endif
|
|
}
|
|
|
|
static inline void stq_be_p(void *ptr, uint64_t v)
|
|
{
|
|
stl_be_p(ptr, v >> 32);
|
|
stl_be_p((uint8_t *)ptr + 4, v);
|
|
}
|
|
|
|
/* float access */
|
|
|
|
static inline float32 ldfl_be_p(const void *ptr)
|
|
{
|
|
union {
|
|
float32 f;
|
|
uint32_t i;
|
|
} u;
|
|
u.i = ldl_be_p(ptr);
|
|
return u.f;
|
|
}
|
|
|
|
static inline void stfl_be_p(void *ptr, float32 v)
|
|
{
|
|
union {
|
|
float32 f;
|
|
uint32_t i;
|
|
} u;
|
|
u.f = v;
|
|
stl_be_p(ptr, u.i);
|
|
}
|
|
|
|
static inline float64 ldfq_be_p(const void *ptr)
|
|
{
|
|
CPU_DoubleU u;
|
|
u.l.upper = ldl_be_p(ptr);
|
|
u.l.lower = ldl_be_p((uint8_t *)ptr + 4);
|
|
return u.d;
|
|
}
|
|
|
|
static inline void stfq_be_p(void *ptr, float64 v)
|
|
{
|
|
CPU_DoubleU u;
|
|
u.d = v;
|
|
stl_be_p(ptr, u.l.upper);
|
|
stl_be_p((uint8_t *)ptr + 4, u.l.lower);
|
|
}
|
|
|
|
#else
|
|
|
|
static inline int lduw_be_p(const void *ptr)
|
|
{
|
|
return *(uint16_t *)ptr;
|
|
}
|
|
|
|
static inline int ldsw_be_p(const void *ptr)
|
|
{
|
|
return *(int16_t *)ptr;
|
|
}
|
|
|
|
static inline int ldl_be_p(const void *ptr)
|
|
{
|
|
return *(uint32_t *)ptr;
|
|
}
|
|
|
|
static inline uint64_t ldq_be_p(const void *ptr)
|
|
{
|
|
return *(uint64_t *)ptr;
|
|
}
|
|
|
|
static inline void stw_be_p(void *ptr, int v)
|
|
{
|
|
*(uint16_t *)ptr = v;
|
|
}
|
|
|
|
static inline void stl_be_p(void *ptr, int v)
|
|
{
|
|
*(uint32_t *)ptr = v;
|
|
}
|
|
|
|
static inline void stq_be_p(void *ptr, uint64_t v)
|
|
{
|
|
*(uint64_t *)ptr = v;
|
|
}
|
|
|
|
/* float access */
|
|
|
|
static inline float32 ldfl_be_p(const void *ptr)
|
|
{
|
|
return *(float32 *)ptr;
|
|
}
|
|
|
|
static inline float64 ldfq_be_p(const void *ptr)
|
|
{
|
|
return *(float64 *)ptr;
|
|
}
|
|
|
|
static inline void stfl_be_p(void *ptr, float32 v)
|
|
{
|
|
*(float32 *)ptr = v;
|
|
}
|
|
|
|
static inline void stfq_be_p(void *ptr, float64 v)
|
|
{
|
|
*(float64 *)ptr = v;
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif /* BSWAP_H */
|