--- /dev/null
+#ifndef BSWAP_H
+#define BSWAP_H
+
+#include "config-host.h"
+#include <inttypes.h>
+#include <limits.h>
+#include <string.h>
+#include "fpu/softfloat.h"
+
+#ifdef CONFIG_MACHINE_BSWAP_H
+# include <sys/endian.h>
+# include <sys/types.h>
+# include <machine/bswap.h>
+#elif defined(__FreeBSD__)
+# include <sys/endian.h>
+#elif defined(CONFIG_BYTESWAP_H)
+# include <byteswap.h>
+
+static inline uint16_t bswap16(uint16_t x)
+{
+ return bswap_16(x);
+}
+
+static inline uint32_t bswap32(uint32_t x)
+{
+ return bswap_32(x);
+}
+
+static inline uint64_t bswap64(uint64_t x)
+{
+ return bswap_64(x);
+}
+# else
+static inline uint16_t bswap16(uint16_t x)
+{
+ return (((x & 0x00ff) << 8) |
+ ((x & 0xff00) >> 8));
+}
+
+static inline uint32_t bswap32(uint32_t x)
+{
+ return (((x & 0x000000ffU) << 24) |
+ ((x & 0x0000ff00U) << 8) |
+ ((x & 0x00ff0000U) >> 8) |
+ ((x & 0xff000000U) >> 24));
+}
+
+static inline uint64_t bswap64(uint64_t x)
+{
+ return (((x & 0x00000000000000ffULL) << 56) |
+ ((x & 0x000000000000ff00ULL) << 40) |
+ ((x & 0x0000000000ff0000ULL) << 24) |
+ ((x & 0x00000000ff000000ULL) << 8) |
+ ((x & 0x000000ff00000000ULL) >> 8) |
+ ((x & 0x0000ff0000000000ULL) >> 24) |
+ ((x & 0x00ff000000000000ULL) >> 40) |
+ ((x & 0xff00000000000000ULL) >> 56));
+}
+#endif /* ! CONFIG_MACHINE_BSWAP_H */
+
+static inline void bswap16s(uint16_t *s)
+{
+ *s = bswap16(*s);
+}
+
+static inline void bswap32s(uint32_t *s)
+{
+ *s = bswap32(*s);
+}
+
+static inline void bswap64s(uint64_t *s)
+{
+ *s = bswap64(*s);
+}
+
+#if defined(HOST_WORDS_BIGENDIAN)
+#define be_bswap(v, size) (v)
+#define le_bswap(v, size) glue(bswap, size)(v)
+#define be_bswaps(v, size)
+#define le_bswaps(p, size) do { *p = glue(bswap, size)(*p); } while(0)
+#else
+#define le_bswap(v, size) (v)
+#define be_bswap(v, size) glue(bswap, size)(v)
+#define le_bswaps(v, size)
+#define be_bswaps(p, size) do { *p = glue(bswap, size)(*p); } while(0)
+#endif
+
+#define CPU_CONVERT(endian, size, type)\
+static inline type endian ## size ## _to_cpu(type v)\
+{\
+ return glue(endian, _bswap)(v, size);\
+}\
+\
+static inline type cpu_to_ ## endian ## size(type v)\
+{\
+ return glue(endian, _bswap)(v, size);\
+}\
+\
+static inline void endian ## size ## _to_cpus(type *p)\
+{\
+ glue(endian, _bswaps)(p, size);\
+}\
+\
+static inline void cpu_to_ ## endian ## size ## s(type *p)\
+{\
+ glue(endian, _bswaps)(p, size);\
+}\
+\
+static inline type endian ## size ## _to_cpup(const type *p)\
+{\
+ return glue(glue(endian, size), _to_cpu)(*p);\
+}\
+\
+static inline void cpu_to_ ## endian ## size ## w(type *p, type v)\
+{\
+ *p = glue(glue(cpu_to_, endian), size)(v);\
+}
+
+CPU_CONVERT(be, 16, uint16_t)
+CPU_CONVERT(be, 32, uint32_t)
+CPU_CONVERT(be, 64, uint64_t)
+
+CPU_CONVERT(le, 16, uint16_t)
+CPU_CONVERT(le, 32, uint32_t)
+CPU_CONVERT(le, 64, uint64_t)
+
+/* len must be one of 1, 2, 4 */
+static inline uint32_t qemu_bswap_len(uint32_t value, int len)
+{
+ return bswap32(value) >> (32 - 8 * len);
+}
+
+/* Unions for reinterpreting between floats and integers. */
+
+typedef union {
+ float32 f;
+ uint32_t l;
+} CPU_FloatU;
+
+typedef union {
+ float64 d;
+#if defined(HOST_WORDS_BIGENDIAN)
+ struct {
+ uint32_t upper;
+ uint32_t lower;
+ } l;
+#else
+ struct {
+ uint32_t lower;
+ uint32_t upper;
+ } l;
+#endif
+ uint64_t ll;
+} CPU_DoubleU;
+
+typedef union {
+ floatx80 d;
+ struct {
+ uint64_t lower;
+ uint16_t upper;
+ } l;
+} CPU_LDoubleU;
+
+typedef union {
+ float128 q;
+#if defined(HOST_WORDS_BIGENDIAN)
+ struct {
+ uint32_t upmost;
+ uint32_t upper;
+ uint32_t lower;
+ uint32_t lowest;
+ } l;
+ struct {
+ uint64_t upper;
+ uint64_t lower;
+ } ll;
+#else
+ struct {
+ uint32_t lowest;
+ uint32_t lower;
+ uint32_t upper;
+ uint32_t upmost;
+ } l;
+ struct {
+ uint64_t lower;
+ uint64_t upper;
+ } ll;
+#endif
+} CPU_QuadU;
+
+/* unaligned/endian-independent pointer access */
+
+/*
+ * the generic syntax is:
+ *
+ * load: ld{type}{sign}{size}{endian}_p(ptr)
+ *
+ * store: st{type}{size}{endian}_p(ptr, val)
+ *
+ * Note there are small differences with the softmmu access API!
+ *
+ * type is:
+ * (empty): integer access
+ * f : float access
+ *
+ * sign is:
+ * (empty): for 32 or 64 bit sizes (including floats and doubles)
+ * u : unsigned
+ * s : signed
+ *
+ * size is:
+ * b: 8 bits
+ * w: 16 bits
+ * l: 32 bits
+ * q: 64 bits
+ *
+ * endian is:
+ * he : host endian
+ * be : big endian
+ * le : little endian
+ * te : target endian
+ * (except for byte accesses, which have no endian infix).
+ *
+ * The target endian accessors are obviously only available to source
+ * files which are built per-target; they are defined in cpu-all.h.
+ *
+ * In all cases these functions take a host pointer.
+ * For accessors that take a guest address rather than a
+ * host address, see the cpu_{ld,st}_* accessors defined in
+ * cpu_ldst.h.
+ */
+
+static inline int ldub_p(const void *ptr)
+{
+ return *(uint8_t *)ptr;
+}
+
+static inline int ldsb_p(const void *ptr)
+{
+ return *(int8_t *)ptr;
+}
+
+static inline void stb_p(void *ptr, uint8_t v)
+{
+ *(uint8_t *)ptr = v;
+}
+
+/* Any compiler worth its salt will turn these memcpy into native unaligned
+ operations. Thus we don't need to play games with packed attributes, or
+ inline byte-by-byte stores. */
+
+static inline int lduw_he_p(const void *ptr)
+{
+ uint16_t r;
+ memcpy(&r, ptr, sizeof(r));
+ return r;
+}
+
+static inline int ldsw_he_p(const void *ptr)
+{
+ int16_t r;
+ memcpy(&r, ptr, sizeof(r));
+ return r;
+}
+
+static inline void stw_he_p(void *ptr, uint16_t v)
+{
+ memcpy(ptr, &v, sizeof(v));
+}
+
+static inline int ldl_he_p(const void *ptr)
+{
+ int32_t r;
+ memcpy(&r, ptr, sizeof(r));
+ return r;
+}
+
+static inline void stl_he_p(void *ptr, uint32_t v)
+{
+ memcpy(ptr, &v, sizeof(v));
+}
+
+static inline uint64_t ldq_he_p(const void *ptr)
+{
+ uint64_t r;
+ memcpy(&r, ptr, sizeof(r));
+ return r;
+}
+
+static inline void stq_he_p(void *ptr, uint64_t v)
+{
+ memcpy(ptr, &v, sizeof(v));
+}
+
+static inline int lduw_le_p(const void *ptr)
+{
+ return (uint16_t)le_bswap(lduw_he_p(ptr), 16);
+}
+
+static inline int ldsw_le_p(const void *ptr)
+{
+ return (int16_t)le_bswap(lduw_he_p(ptr), 16);
+}
+
+static inline int ldl_le_p(const void *ptr)
+{
+ return le_bswap(ldl_he_p(ptr), 32);
+}
+
+static inline uint64_t ldq_le_p(const void *ptr)
+{
+ return le_bswap(ldq_he_p(ptr), 64);
+}
+
+static inline void stw_le_p(void *ptr, uint16_t v)
+{
+ stw_he_p(ptr, le_bswap(v, 16));
+}
+
+static inline void stl_le_p(void *ptr, uint32_t v)
+{
+ stl_he_p(ptr, le_bswap(v, 32));
+}
+
+static inline void stq_le_p(void *ptr, uint64_t v)
+{
+ stq_he_p(ptr, le_bswap(v, 64));
+}
+
+/* float access */
+
+static inline float32 ldfl_le_p(const void *ptr)
+{
+ CPU_FloatU u;
+ u.l = ldl_le_p(ptr);
+ return u.f;
+}
+
+static inline void stfl_le_p(void *ptr, float32 v)
+{
+ CPU_FloatU u;
+ u.f = v;
+ stl_le_p(ptr, u.l);
+}
+
+static inline float64 ldfq_le_p(const void *ptr)
+{
+ CPU_DoubleU u;
+ u.ll = ldq_le_p(ptr);
+ return u.d;
+}
+
+static inline void stfq_le_p(void *ptr, float64 v)
+{
+ CPU_DoubleU u;
+ u.d = v;
+ stq_le_p(ptr, u.ll);
+}
+
+static inline int lduw_be_p(const void *ptr)
+{
+ return (uint16_t)be_bswap(lduw_he_p(ptr), 16);
+}
+
+static inline int ldsw_be_p(const void *ptr)
+{
+ return (int16_t)be_bswap(lduw_he_p(ptr), 16);
+}
+
+static inline int ldl_be_p(const void *ptr)
+{
+ return be_bswap(ldl_he_p(ptr), 32);
+}
+
+static inline uint64_t ldq_be_p(const void *ptr)
+{
+ return be_bswap(ldq_he_p(ptr), 64);
+}
+
+static inline void stw_be_p(void *ptr, uint16_t v)
+{
+ stw_he_p(ptr, be_bswap(v, 16));
+}
+
+static inline void stl_be_p(void *ptr, uint32_t v)
+{
+ stl_he_p(ptr, be_bswap(v, 32));
+}
+
+static inline void stq_be_p(void *ptr, uint64_t v)
+{
+ stq_he_p(ptr, be_bswap(v, 64));
+}
+
+/* float access */
+
+static inline float32 ldfl_be_p(const void *ptr)
+{
+ CPU_FloatU u;
+ u.l = ldl_be_p(ptr);
+ return u.f;
+}
+
+static inline void stfl_be_p(void *ptr, float32 v)
+{
+ CPU_FloatU u;
+ u.f = v;
+ stl_be_p(ptr, u.l);
+}
+
+static inline float64 ldfq_be_p(const void *ptr)
+{
+ CPU_DoubleU u;
+ u.ll = ldq_be_p(ptr);
+ return u.d;
+}
+
+static inline void stfq_be_p(void *ptr, float64 v)
+{
+ CPU_DoubleU u;
+ u.d = v;
+ stq_be_p(ptr, u.ll);
+}
+
+static inline unsigned long leul_to_cpu(unsigned long v)
+{
+ /* In order to break an include loop between here and
+ qemu-common.h, don't rely on HOST_LONG_BITS. */
+#if ULONG_MAX == UINT32_MAX
+ return le_bswap(v, 32);
+#elif ULONG_MAX == UINT64_MAX
+ return le_bswap(v, 64);
+#else
+# error Unknown sizeof long
+#endif
+}
+
+#undef le_bswap
+#undef be_bswap
+#undef le_bswaps
+#undef be_bswaps
+
+#endif /* BSWAP_H */
Code Review / kvmfornfv.git / blobdiff