4 #include "fpu/softfloat.h"
6 #ifdef CONFIG_MACHINE_BSWAP_H
7 # include <sys/endian.h>
8 # include <machine/bswap.h>
9 #elif defined(__FreeBSD__)
10 # include <sys/endian.h>
11 #elif defined(CONFIG_BYTESWAP_H)
12 # include <byteswap.h>
14 static inline uint16_t bswap16(uint16_t x)
19 static inline uint32_t bswap32(uint32_t x)
24 static inline uint64_t bswap64(uint64_t x)
29 static inline uint16_t bswap16(uint16_t x)
31 return (((x & 0x00ff) << 8) |
35 static inline uint32_t bswap32(uint32_t x)
37 return (((x & 0x000000ffU) << 24) |
38 ((x & 0x0000ff00U) << 8) |
39 ((x & 0x00ff0000U) >> 8) |
40 ((x & 0xff000000U) >> 24));
43 static inline uint64_t bswap64(uint64_t x)
45 return (((x & 0x00000000000000ffULL) << 56) |
46 ((x & 0x000000000000ff00ULL) << 40) |
47 ((x & 0x0000000000ff0000ULL) << 24) |
48 ((x & 0x00000000ff000000ULL) << 8) |
49 ((x & 0x000000ff00000000ULL) >> 8) |
50 ((x & 0x0000ff0000000000ULL) >> 24) |
51 ((x & 0x00ff000000000000ULL) >> 40) |
52 ((x & 0xff00000000000000ULL) >> 56));
54 #endif /* ! CONFIG_MACHINE_BSWAP_H */
56 static inline void bswap16s(uint16_t *s)
61 static inline void bswap32s(uint32_t *s)
66 static inline void bswap64s(uint64_t *s)
71 #if defined(HOST_WORDS_BIGENDIAN)
72 #define be_bswap(v, size) (v)
73 #define le_bswap(v, size) glue(bswap, size)(v)
74 #define be_bswaps(v, size)
75 #define le_bswaps(p, size) do { *p = glue(bswap, size)(*p); } while(0)
77 #define le_bswap(v, size) (v)
78 #define be_bswap(v, size) glue(bswap, size)(v)
79 #define le_bswaps(v, size)
80 #define be_bswaps(p, size) do { *p = glue(bswap, size)(*p); } while(0)
83 #define CPU_CONVERT(endian, size, type)\
84 static inline type endian ## size ## _to_cpu(type v)\
86 return glue(endian, _bswap)(v, size);\
89 static inline type cpu_to_ ## endian ## size(type v)\
91 return glue(endian, _bswap)(v, size);\
94 static inline void endian ## size ## _to_cpus(type *p)\
96 glue(endian, _bswaps)(p, size);\
99 static inline void cpu_to_ ## endian ## size ## s(type *p)\
101 glue(endian, _bswaps)(p, size);\
104 static inline type endian ## size ## _to_cpup(const type *p)\
106 return glue(glue(endian, size), _to_cpu)(*p);\
109 static inline void cpu_to_ ## endian ## size ## w(type *p, type v)\
111 *p = glue(glue(cpu_to_, endian), size)(v);\
114 CPU_CONVERT(be, 16, uint16_t)
115 CPU_CONVERT(be, 32, uint32_t)
116 CPU_CONVERT(be, 64, uint64_t)
118 CPU_CONVERT(le, 16, uint16_t)
119 CPU_CONVERT(le, 32, uint32_t)
120 CPU_CONVERT(le, 64, uint64_t)
122 /* len must be one of 1, 2, 4 */
123 static inline uint32_t qemu_bswap_len(uint32_t value, int len)
125 return bswap32(value) >> (32 - 8 * len);
128 /* Unions for reinterpreting between floats and integers. */
137 #if defined(HOST_WORDS_BIGENDIAN)
161 #if defined(HOST_WORDS_BIGENDIAN)
186 /* unaligned/endian-independent pointer access */
189 * the generic syntax is:
191 * load: ld{type}{sign}{size}{endian}_p(ptr)
193 * store: st{type}{size}{endian}_p(ptr, val)
195 * Note there are small differences with the softmmu access API!
198 * (empty): integer access
202 * (empty): for 32 or 64 bit sizes (including floats and doubles)
217 * (except for byte accesses, which have no endian infix).
219 * The target endian accessors are obviously only available to source
220 * files which are built per-target; they are defined in cpu-all.h.
222 * In all cases these functions take a host pointer.
223 * For accessors that take a guest address rather than a
224 * host address, see the cpu_{ld,st}_* accessors defined in
228 static inline int ldub_p(const void *ptr)
230 return *(uint8_t *)ptr;
233 static inline int ldsb_p(const void *ptr)
235 return *(int8_t *)ptr;
238 static inline void stb_p(void *ptr, uint8_t v)
243 /* Any compiler worth its salt will turn these memcpy into native unaligned
244 operations. Thus we don't need to play games with packed attributes, or
245 inline byte-by-byte stores. */
247 static inline int lduw_he_p(const void *ptr)
250 memcpy(&r, ptr, sizeof(r));
254 static inline int ldsw_he_p(const void *ptr)
257 memcpy(&r, ptr, sizeof(r));
261 static inline void stw_he_p(void *ptr, uint16_t v)
263 memcpy(ptr, &v, sizeof(v));
266 static inline int ldl_he_p(const void *ptr)
269 memcpy(&r, ptr, sizeof(r));
273 static inline void stl_he_p(void *ptr, uint32_t v)
275 memcpy(ptr, &v, sizeof(v));
278 static inline uint64_t ldq_he_p(const void *ptr)
281 memcpy(&r, ptr, sizeof(r));
285 static inline void stq_he_p(void *ptr, uint64_t v)
287 memcpy(ptr, &v, sizeof(v));
290 static inline int lduw_le_p(const void *ptr)
292 return (uint16_t)le_bswap(lduw_he_p(ptr), 16);
295 static inline int ldsw_le_p(const void *ptr)
297 return (int16_t)le_bswap(lduw_he_p(ptr), 16);
300 static inline int ldl_le_p(const void *ptr)
302 return le_bswap(ldl_he_p(ptr), 32);
305 static inline uint64_t ldq_le_p(const void *ptr)
307 return le_bswap(ldq_he_p(ptr), 64);
310 static inline void stw_le_p(void *ptr, uint16_t v)
312 stw_he_p(ptr, le_bswap(v, 16));
315 static inline void stl_le_p(void *ptr, uint32_t v)
317 stl_he_p(ptr, le_bswap(v, 32));
320 static inline void stq_le_p(void *ptr, uint64_t v)
322 stq_he_p(ptr, le_bswap(v, 64));
327 static inline float32 ldfl_le_p(const void *ptr)
334 static inline void stfl_le_p(void *ptr, float32 v)
341 static inline float64 ldfq_le_p(const void *ptr)
344 u.ll = ldq_le_p(ptr);
348 static inline void stfq_le_p(void *ptr, float64 v)
355 static inline int lduw_be_p(const void *ptr)
357 return (uint16_t)be_bswap(lduw_he_p(ptr), 16);
360 static inline int ldsw_be_p(const void *ptr)
362 return (int16_t)be_bswap(lduw_he_p(ptr), 16);
365 static inline int ldl_be_p(const void *ptr)
367 return be_bswap(ldl_he_p(ptr), 32);
370 static inline uint64_t ldq_be_p(const void *ptr)
372 return be_bswap(ldq_he_p(ptr), 64);
375 static inline void stw_be_p(void *ptr, uint16_t v)
377 stw_he_p(ptr, be_bswap(v, 16));
380 static inline void stl_be_p(void *ptr, uint32_t v)
382 stl_he_p(ptr, be_bswap(v, 32));
385 static inline void stq_be_p(void *ptr, uint64_t v)
387 stq_he_p(ptr, be_bswap(v, 64));
392 static inline float32 ldfl_be_p(const void *ptr)
399 static inline void stfl_be_p(void *ptr, float32 v)
406 static inline float64 ldfq_be_p(const void *ptr)
409 u.ll = ldq_be_p(ptr);
413 static inline void stfq_be_p(void *ptr, float64 v)
420 static inline unsigned long leul_to_cpu(unsigned long v)
422 /* In order to break an include loop between here and
423 qemu-common.h, don't rely on HOST_LONG_BITS. */
424 #if ULONG_MAX == UINT32_MAX
425 return le_bswap(v, 32);
426 #elif ULONG_MAX == UINT64_MAX
427 return le_bswap(v, 64);
429 # error Unknown sizeof long